Ole Andreas Andreassen
Position: Professor, senior supervisor, MD, PhD
Phone: +47-22 11 78 43
Email:
Visting address: Kirkeveien 166 Bygg 49 0450 Oslo
Postaø adress: Oslo Universitetssykehus Postboks 4956 Nydalen 0424 Oslo
 

Author network for Ole Andreas Andreassen by COREMINE medical


Publications 2017

Córdova-Palomera A, Kaufmann T, Persson K, Alnæs D, Doan NT, Moberget T, Lund MJ, Barca ML, Engvig A, Brækhus A, Engedal K, Andreassen OA, Selbæk G, Westlye LT (2017)
Disrupted global metastability and static and dynamic brain connectivity across individuals in the Alzheimer's disease continuum
Sci Rep, 7, 40268
PubMed 28074926

Desikan RS, Fan CC, Wang Y, Schork AJ, Cabral HJ, Cupples LA, Thompson WK, Besser L, Kukull WA, Holland D, Chen CH, Brewer JB, Karow DS, Kauppi K, Witoelar A, Karch CM, Bonham LW, Yokoyama JS, Rosen HJ, Miller BL, Dillon WP, Wilson DM, Hess CP, Pericak-Vance M, Haines JL et al. (2017)
Genetic assessment of age-associated Alzheimer disease risk: Development and validation of a polygenic hazard score
PLoS Med, 14 (3), e1002258
PubMed 28323831

Desikan RS, Fan CC, Wang YP, Schork AJ, CabraI HJ, Cupples LA, Thompson WK, Besser L, Kukull WA, Holland D, Chen CH, Brewer JB, Karow DS, Kauppi K, Witoelar A, Karch CM, Bonham LW, Yokoyama JS, Rosen HJ, Miller BL, Dillon WP, Wilson DM, Hess CP, Pericak-Vance M, Haines JL et al. (2017)
Genetic assessment of age-associated Alzheimer disease risk: Development and validation of a polygenic hazard score
PLos Med., 14 (3), e1002258

Devor A, Andreassen OA, Wang Y, Mäki-Marttunen T, Smeland OB, Fan CC, Schork AJ, Holland D, Thompson WK, Witoelar A, Chen CH, Desikan RS, McEvoy LK, Djurovic S, Greengard P, Svenningsson P, Einevoll GT, Dale AM (2017)
Genetic evidence for role of integration of fast and slow neurotransmission in schizophrenia
Mol Psychiatry, 22 (6), 792-801
PubMed 28348379

Doan NT, Engvig A, Persson K, Alnæs D, Kaufmann T, Rokicki J, Córdova-Palomera A, Moberget T, Brækhus A, Barca ML, Engedal K, Andreassen OA, Selbæk G, Westlye LT (2017)
Dissociable diffusion MRI patterns of white matter microstructure and connectivity in Alzheimer's disease spectrum
Sci Rep, 7, 45131
PubMed 28338052

Dørum ES, Kaufmann T, Alnæs D, Andreassen OA, Richard G, Kolskår KK, Nordvik JE, Westlye LT (2017)
Increased sensitivity to age-related differences in brain functional connectivity during continuous multiple object tracking compared to resting-state
Neuroimage, 148, 364-372
PubMed 28111190

Halnes G, Mäki-Marttunen T, Pettersen KH, Andreassen OA, Einevoll GT (2017)
Ion diffusion may introduce spurious current sources in Current-Source Density (CSD) analysis
J Neurophysiol, jn.00976.2016 (in press)
PubMed 28298307

Hellstrom T, Westlye LT, Sigurdardottir S, Brunborg C, Soberg HL, Holthe Ø, Server A, Lund MJ, Andreassen OA, Andelic N (2017)
Longitudinal changes in brain morphology from 4 weeks to 12 months after mild traumatic brain injury: Associations with cognitive functions and clinical variables
Brain Inj, 1-12 (in press)
PubMed 28414250

Hellstrøm T, Kaufmann T, Andelic N, Soberg HL, Sigurdardottir S, Helseth E, Andreassen OA, Westlye LT (2017)
Predicting Outcome 12 Months after Mild Traumatic Brain Injury in Patients Admitted to a Neurosurgery Service
Front Neurol, 8, 125
PubMed 28443058

Hibar DP, Adams HH, Jahanshad N, Chauhan G, Stein JL, Hofer E, Renteria ME, Bis JC, Arias-Vasquez A, Ikram MK, Desrivières S, Vernooij MW, Abramovic L, Alhusaini S, Amin N, Andersson M, Arfanakis K, Aribisala BS, Armstrong NJ, Athanasiu L, Axelsson T, Beecham AH, Beiser A, Bernard M, Blanton SH et al. (2017)
Novel genetic loci associated with hippocampal volume
Nat Commun, 8, 13624
PubMed 28098162

Hibar DP, Westlye LT, Doan NT, Jahanshad N, Cheung JW, Ching CRK, Versace A, Bilderbeck AC, Uhlmann A, Mwangi B, Krämer B, Overs B, Hartberg CB, Abé C, Dima D, Grotegerd D, Sprooten E, Bøen E, Jimenez E, Howells FM, Delvecchio G, Temmingh H, Starke J, Almeida JRC, Goikolea JM et al. (2017)
Cortical abnormalities in bipolar disorder: an MRI analysis of 6503 individuals from the ENIGMA Bipolar Disorder Working Group
Mol Psychiatry (in press)
PubMed 28461699

Hoseth EZ, Ueland T, Dieset I, Birnbaum R, Shin JH, Kleinman JE, Hyde TM, Mørch RH, Hope S, Lekva T, Abraityte AJ, Michelsen AE, Melle I, Westlye LT, Ueland T, Djurovic S, Aukrust P, Weinberger DR, Andreassen OA (2017)
A Study of TNF Pathway Activation in Schizophrenia and Bipolar Disorder in Plasma and Brain Tissue
Schizophr Bull (in press)
PubMed 28049760

Johannessen J, Nærland T, Hope S, Torske T, Høyland AL, Strohmaier J, Heiberg A, Rietschel M, Djurovic S, Andreassen OA (2017)
Parents' Attitudes toward Clinical Genetic Testing for Autism Spectrum Disorder-Data from a Norwegian Sample
Int J Mol Sci, 18 (5)
PubMed 28524073

Kaufmann T, Alnæs D, Doan NT, Brandt CL, Andreassen OA, Westlye LT (2017)
Delayed stabilization and individualization in connectome development are related to psychiatric disorders
Nat Neurosci, 20 (4), 513-515
PubMed 28218917

Le Hellard S, Wang Y, Witoelar A, Zuber V, Bettella F, Hugdahl K, Espeseth T, Steen VM, Melle I, Desikan R, Schork AJ, Thompson WK, Dale AM, Djurovic S, Andreassen OA, Schizophrenia Working Group of the Psychiatric Genomics Consortium (2017)
Identification of Gene Loci That Overlap Between Schizophrenia and Educational Attainment
Schizophr Bull, 43 (3), 654-664
PubMed 27338279

Moberget T, Doan NT, Alnæs D, Kaufmann T, Córdova-Palomera A, Lagerberg TV, Diedrichsen J, Schwarz E, Zink M, Eisenacher S, Kirsch P, Jönsson EG, Fatouros-Bergman H, Flyckt L, KaSP, Pergola G, Quarto T, Bertolino A, Barch D, Meyer-Lindenberg A, Agartz I, Andreassen OA, Westlye LT (2017)
Cerebellar volume and cerebellocerebral structural covariance in schizophrenia: a multisite mega-analysis of 983 patients and 1349 healthy controls
Mol Psychiatry (in press)
PubMed 28507318

Nerhus M, Berg AO, Simonsen C, Haram M, Haatveit B, Dahl SR, Gurholt TP, Bjella TD, Ueland T, Andreassen OA, Melle I (2017)
Vitamin D Deficiency Associated With Cognitive Functioning in Psychotic Disorders
J Clin Psychiatry (in press)
PubMed 28493652

Nesvåg R, Jönsson EG, Bakken IJ, Knudsen GP, Bjella TD, Reichborn-Kjennerud T, Melle I, Andreassen OA (2017)
The quality of severe mental disorder diagnoses in a national health registry as compared to research diagnoses based on structured interview
BMC Psychiatry, 17 (1), 93
PubMed 28292279

Quintana DS, Dieset I, Elvsåshagen T, Westlye LT, Andreassen OA (2017)
Oxytocin system dysfunction as a common mechanism underlying metabolic syndrome and psychiatric symptoms in schizophrenia and bipolar disorders
Front Neuroendocrinol, 45, 1-10
PubMed 28049009

Quintana DS, Elvsåshagen T, Zak N, Norbom LB, Pedersen PØ, Quraishi SH, Bjørnerud A, Malt UF, Groote IR, Kaufmann T, Andreassen OA, Westlye LT (2017)
Diurnal Variation and Twenty-Four Hour Sleep Deprivation Do Not Alter Supine Heart Rate Variability in Healthy Male Young Adults
PLoS One, 12 (2), e0170921
PubMed 28151944

Røssberg JI, Andreassen OA, Ilner SO (2017)
[No title available]
Tidsskr Nor Laegeforen, 137 (9), 594-595
PubMed 28468447

Røssberg JI, Andreassen OA, Ilner SO (2017)
[No title available]
Tidsskr Nor Laegeforen, 137 (6), 426-427
PubMed 28332789

Skåtun KC, Kaufmann T, Brandt CL, Doan NT, Alnæs D, Tønnesen S, Biele G, Vaskinn A, Melle I, Agartz I, Andreassen OA, Westlye LT (2017)
Thalamo-cortical functional connectivity in schizophrenia and bipolar disorder
Brain Imaging Behav (in press)
PubMed 28444556

Srinivasan S, Bettella F, Hassani S, Wang Y, Witoelar A, Schork AJ, Thompson WK, Collier DA, Desikan RS, Melle I, Dale AM, Djurovic S, Andreassen OA (2017)
Probing the Association between Early Evolutionary Markers and Schizophrenia
PLoS One, 12 (1), e0169227
PubMed 28081145

Styrkarsdottir U, Helgason H, Sigurdsson A, Norddahl GL, Agustsdottir AB, Reynard LN, Villalvilla A, Halldorsson GH, Jonasdottir A, Magnusdottir A, Oddson A, Sulem G, Zink F, Sveinbjornsson G, Helgason A, Johannsdottir HS, Helgadottir A, Stefansson H, Gretarsdottir S, Rafnar T, Almdahl IS, Brækhus A, Fladby T, Selbæk G, Hosseinpanah F et al. (2017)
Whole-genome sequencing identifies rare genotypes in COMP and CHADL associated with high risk of hip osteoarthritis
Nat Genet, 49 (5), 801-805
PubMed 28319091

Trampush JW, Yang ML, Yu J, Knowles E, Davies G, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, DeRosse P, Lundervold AJ, Steen VM, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B, Roussos P, Giakoumaki S, Burdick KE et al. (2017)
GWAS meta-analysis reveals novel loci and genetic correlates for general cognitive function: a report from the COGENT consortium
Mol Psychiatry, 22 (3), 336-345
PubMed 28093568

Valstad M, Alvares GA, Egknud M, Matziorinis AM, Andreassen OA, Westlye LT, Quintana DS (2017)
The correlation between central and peripheral oxytocin concentrations: A systematic review and meta-analysis
Neurosci Biobehav Rev, 78, 117-124 (in press)
PubMed 28442403

Vaskinn A, Lagerberg TV, Bjella TD, Simonsen C, Andreassen OA, Ueland T, Sundet K (2017)
Impairment in emotion perception from body movements in individuals with bipolar I and bipolar II disorder is associated with functional capacity
Int J Bipolar Disord, 5 (1), 13
PubMed 28332121

Walton E, Hibar DP, van Erp TG, Potkin SG, Roiz-Santiañez R, Crespo-Facorro B, Suarez-Pinilla P, Van Haren NE, de Zwarte SM, Kahn RS, Cahn W, Doan NT, Jørgensen KN, Gurholt TP, Agartz I, Andreassen OA, Westlye LT, Melle I, Berg AO, Mørch-Johnsen L, Faerden A, Flyckt L, Fatouros-Bergman H, Karolinska Schizophrenia Project Consortium (KaSP), Jönsson EG et al. (2017)
Positive symptoms associate with cortical thinning in the superior temporal gyrus via the ENIGMA Schizophrenia consortium
Acta Psychiatr Scand, 135 (5), 439-447
PubMed 28369804

Yokoyama JS, Karch CM, Fan CC, Bonham LW, Kouri N, Ross OA, Rademakers R, Kim J, Wang Y, Höglinger GU, Müller U, Ferrari R, Hardy J, International FTD-Genomics Consortium (IFGC), Momeni P, Sugrue LP, Hess CP, James Barkovich A, Boxer AL, Seeley WW, Rabinovici GD, Rosen HJ, Miller BL, Schmansky NJ, Fischl B et al. (2017)
Shared genetic risk between corticobasal degeneration, progressive supranuclear palsy, and frontotemporal dementia
Acta Neuropathol, 133 (5), 825-837
PubMed 28271184

Zuber V, Bettella F, Witoelar A, PRACTICAL Consortium, CRUK GWAS, BCAC Consortium, TRICL Consortium, Andreassen OA, Mills IG, Urbanucci A (2017)
Bromodomain protein 4 discriminates tissue-specific super-enhancers containing disease-specific susceptibility loci in prostate and breast cancer
BMC Genomics, 18 (1), 270
PubMed 28359301

Publications 2016

Adams HH, Hibar DP, Chouraki V, Stein JL, Nyquist PA, Rentería ME, Trompet S, Arias-Vasquez A, Seshadri S, Desrivières S, Beecham AH, Jahanshad N, Wittfeld K, Van der Lee SJ, Abramovic L, Alhusaini S, Amin N, Andersson M, Arfanakis K, Aribisala BS, Armstrong NJ, Athanasiu L, Axelsson T, Beiser A, Bernard M et al. (2016)
Novel genetic loci underlying human intracranial volume identified through genome-wide association
Nat Neurosci, 19 (12), 1569-1582
PubMed 27694991

Athanasiu L, Giddaluru S, Fernandes C, Christoforou A, Reinvang I, Lundervold AJ, Nilsson LG, Kauppi K, Adolfsson R, Eriksson E, Sundet K, Djurovic S, Espeseth T, Nyberg L, Steen VM, Andreassen OA, Le Hellard S (2016)
A genetic association study of CSMD1 and CSMD2 with cognitive function
Brain Behav Immun, 61, 209-216
PubMed 27890662

Berg AO, Melle I, Zuber V, Simonsen C, Nerhus M, Ueland T, Andreassen OA, Sundet K, Vaskinn A (2016)
Modelling difficulties in abstract thinking in psychosis: the importance of socio-developmental background
Cogn Neuropsychiatry, 22 (1), 39-52
PubMed 28005457

Bonham LW, Geier EG, Fan CC, Leong JK, Besser L, Kukull WA, Kornak J, Andreassen OA, Schellenberg GD, Rosen HJ, Dillon WP, Hess CP, Miller BL, Dale AM, Desikan RS, Yokoyama JS (2016)
Age-dependent effects of APOE ε4 in preclinical Alzheimer's disease
Ann Clin Transl Neurol, 3 (9), 668-77
PubMed 27648456

Dahl J, Ormstad H, Aass HC, Sandvik L, Malt UF, Andreassen OA (2016)
Recovery from major depressive disorder episode after non-pharmacological treatment is associated with normalized cytokine levels
Acta Psychiatr Scand, 134 (1), 40-7
PubMed 27028967

Demmo C, Lagerberg TV, Aminoff SR, Hellvin T, Kvitland LR, Simonsen C, Andreassen OA, Melle I, Ueland T (2016)
History of psychosis and previous episodes as potential explanatory factors for neurocognitive impairment in first-treatment bipolar I disorder
Bipolar Disord, 18 (2), 136-47
PubMed 26990158

Demmo C, Lagerberg TV, Aminoff SR, Hellvin T, Kvitland LR, Simonsen C, Haatveit B, Andreassen OA, Melle I, Ueland T (2016)
Course of neurocognitive function in first treatment bipolar I disorder: One-year follow-up study
Psychiatry Res, 249, 286-292
PubMed 28142102

Dieset I, Andreassen OA, Haukvik UK (2016)
Somatic Comorbidity in Schizophrenia: Some Possible Biological Mechanisms Across the Life Span
Schizophr Bull, 42 (6), 1316-1319
PubMed 27033328

Dørum ES, Alnæs D, Kaufmann T, Richard G, Lund MJ, Tønnesen S, Sneve MH, Mathiesen NC, Rustan ØG, Gjertsen Ø, Vatn S, Fure B, Andreassen OA, Nordvik JE, Westlye LT (2016)
Age-related differences in brain network activation and co-activation during multiple object tracking
Brain Behav, 6 (11), e00533
PubMed 27843692

Ellinghaus D, Jostins L, Spain SL, Cortes A, Bethune J, Han B, Park YR, Raychaudhuri S, Pouget JG, Hübenthal M, Folseraas T, Wang Y, Esko T, Metspalu A, Westra HJ, Franke L, Pers TH, Weersma RK, Collij V, D'Amato M, Halfvarson J, Jensen AB, Lieb W, Degenhardt F, Forstner AJ et al. (2016)
Analysis of five chronic inflammatory diseases identifies 27 new associations and highlights disease-specific patterns at shared loci
Nat Genet, 48 (5), 510-8
PubMed 26974007

Ferrari R, Wang Y, Vandrovcova J, Guelfi S, Witeolar A, Karch CM, Schork AJ, Fan CC, Brewer JB, International FTD-Genomics Consortium (IFGC),, International Parkinson's Disease Genomics Consortium (IPDGC),, International Genomics of Alzheimer's Project (IGAP),, Momeni P, Schellenberg GD, Dillon WP, Sugrue LP, Hess CP, Yokoyama JS, Bonham LW, Rabinovici GD, Miller BL, Andreassen OA, Dale AM, Hardy J, Desikan RS (2016)
Genetic architecture of sporadic frontotemporal dementia and overlap with Alzheimer's and Parkinson's diseases
J Neurol Neurosurg Psychiatry, 88 (2), 152-164
PubMed 27899424

Fjukstad KK, Engum A, Lydersen S, Dieset I, Steen NE, Andreassen OA, Spigset O (2016)
Metabolic Abnormalities Related to Treatment With Selective Serotonin Reuptake Inhibitors in Patients With Schizophrenia or Bipolar Disorder
J Clin Psychopharmacol, 36 (6), 615-620
PubMed 27749681

Fountoulakis KN, Chatzikosta I, Pastiadis K, Zanis P, Kawohl W, Kerkhof AJ, Navickas A, Höschl C, Lecic-Tosevski D, Sorel E, Rancans E, Palova E, Juckel G, Isacsson G, Jagodic HK, Botezat-Antonescu I, Rybakowski J, Azorin JM, Cookson J, Waddington J, Pregelj P, Demyttenaere K, Hranov LG, Stevovic LI, Pezawas L et al. (2016)
Relationship of suicide rates with climate and economic variables in Europe during 2000-2012
Ann Gen Psychiatry, 15, 19
PubMed 27508001

Franke B, Stein JL, Ripke S, Anttila V, Hibar DP, van Hulzen KJ, Arias-Vasquez A, Smoller JW, Nichols TE, Neale MC, McIntosh AM, Lee P, McMahon FJ, Meyer-Lindenberg A, Mattheisen M, Andreassen OA, Gruber O, Sachdev PS, Roiz-Santiañez R, Saykin AJ, Ehrlich S, Mather KA, Turner JA, Schwarz E, Thalamuthu A et al. (2016)
Genetic influences on schizophrenia and subcortical brain volumes: large-scale proof of concept
Nat Neurosci, 19 (3), 420-31
PubMed 26854805

Grellmann C, Neumann J, Bitzer S, Kovacs P, Tönjes A, Westlye LT, Andreassen OA, Stumvoll M, Villringer A, Horstmann A (2016)
Random Projection for Fast and Efficient Multivariate Correlation Analysis of High-Dimensional Data: A New Approach
Front Genet, 7, 102
PubMed 27375677

Guadalupe T, Mathias SR, vanErp TG, Whelan CD, Zwiers MP, Abe Y, Abramovic L, Agartz I, Andreassen OA, Arias-Vásquez A, Aribisala BS, Armstrong NJ, Arolt V, Artiges E, Ayesa-Arriola R, Baboyan VG, Banaschewski T, Barker G, Bastin ME, Baune BT, Blangero J, Bokde AL, Boedhoe PS, Bose A, Brem S et al. (2016)
Human subcortical brain asymmetries in 15,847 people worldwide reveal effects of age and sex
Brain Imaging Behav (in press)
PubMed 27738994

Gunnarsson B, Jónsdóttir GA, Björnsdóttir G, Konte B, Sulem P, Kristmundsdóttir S, Kehr B, Gústafsson Ó, Helgason H, Iordache PD, Ólafsson S, Frigge ML, Þorleifsson G, Arnarsdóttir S, Stefánsdóttir B, Giegling I, Djurovic S, Sundet KS, Espeseth T, Melle I, Hartmann AM, Thorsteinsdottir U, Kong A, Guðbjartsson DF, Ettinger U et al. (2016)
A sequence variant associating with educational attainment also affects childhood cognition
Sci Rep, 6, 36189
PubMed 27811963

Halnes G, Mäki-Marttunen T, Keller D, Pettersen KH, Andreassen OA, Einevoll GT (2016)
Effect of Ionic Diffusion on Extracellular Potentials in Neural Tissue
PLoS Comput Biol, 12 (11), e1005193
PubMed 27820827

Haram M, Bettella F, Brandt CL, Quintana DS, Nerhus M, Bjella T, Djurovic S, Westlye LT, Andreassen OA, Melle I, Tesli M (2016)
Contribution of oxytocin receptor polymorphisms to amygdala activation in schizophrenia spectrum disorders
BJPsych Open, 2 (6), 353-358
PubMed 27847593

Haug E, Øie MG, Andreassen OA, Bratlien U, Romm KL, Møller P, Melle I (2016)
The Association between Anomalous Self-experiences, Self-esteem and Depressive Symptoms in First Episode Schizophrenia
Front Hum Neurosci, 10, 557
PubMed 27872587

Hellstrøm T, Westlye LT, Server A, Løvstad M, Brunborg C, Lund MJ, Nordhøy W, Andreassen OA, Andelic N (2016)
Volumetric and morphometric MRI findings in patients with mild traumatic brain injury
Brain Inj, 30 (13-14), 1683-1691
PubMed 27996331

Hibar DP, Westlye LT, van Erp TG, Rasmussen J, Leonardo CD, Faskowitz J, Haukvik UK, Hartberg CB, Doan NT, Agartz I, Dale AM, Gruber O, Krämer B, Trost S, Liberg B, Abé C, Ekman CJ, Ingvar M, Landén M, Fears SC, Freimer NB, Bearden CE, Costa Rica/Colombia Consortium for Genetic Investigation of Bipolar Endophenotypes, Sprooten E, Glahn DC et al. (2016)
Subcortical volumetric abnormalities in bipolar disorder
Mol Psychiatry, 21 (12), 1710-1716
PubMed 26857596

Holland D, Wang Y, Thompson WK, Schork A, Chen CH, Lo MT, Witoelar A, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Enhancing Neuro Imaging Genetics through Meta Analysis Consortium, Werge T, O'Donovan M, Andreassen OA, Dale AM (2016)
Estimating Effect Sizes and Expected Replication Probabilities from GWAS Summary Statistics
Front Genet, 7, 15
PubMed 26909100

Haatveit B, Jensen J, Alnæs D, Kaufmann T, Brandt CL, Thoresen C, Andreassen OA, Melle I, Ueland T, Westlye LT (2016)
Reduced load-dependent default mode network deactivation across executive tasks in schizophrenia spectrum disorders
Neuroimage Clin, 12, 389-96
PubMed 27622135

Johannessen J, Nærland T, Bloss C, Rietschel M, Strohmaier J, Gjevik E, Heiberg A, Djurovic S, Andreassen OA (2016)
Parents' attitudes toward genetic research in autism spectrum disorder
Psychiatr Genet, 26 (2), 74-80
PubMed 26867185

Jørgensen KN, Nerland S, Norbom LB, Doan NT, Nesvåg R, Mørch-Johnsen L, Haukvik UK, Melle I, Andreassen OA, Westlye LT, Agartz I (2016)
Increased MRI-based cortical grey/white-matter contrast in sensory and motor regions in schizophrenia and bipolar disorder
Psychol Med, 46 (9), 1971-85
PubMed 27049014

Jørgensen KN, Nesvåg R, Nerland S, Mørch-Johnsen L, Westlye LT, Lange EH, Haukvik UK, Hartberg CB, Melle I, Andreassen OA, Agartz I (2016)
Brain volume change in first-episode psychosis: an effect of antipsychotic medication independent of BMI change
Acta Psychiatr Scand, 135 (2), 117-126
PubMed 27925164

Kaufmann T, Alnæs D, Brandt CL, Doan NT, Kauppi K, Bettella F, Lagerberg TV, Berg AO, Djurovic S, Agartz I, Melle IS, Ueland T, Andreassen OA, Westlye LT (2016)
Task modulations and clinical manifestations in the brain functional connectome in 1615 fMRI datasets
Neuroimage, 147, 243-252
PubMed 27916665

Kvitland LR, Ringen PA, Aminoff SR, Demmo C, Hellvin T, Lagerberg TV, Andreassen OA, Melle I (2016)
Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use
Psychiatry Res, 246, 762-768
PubMed 27814886

Lagerberg TV, Aminoff SR, Aas M, Bjella T, Henry C, Leboyer M, Pedersen G, Bellivier F, Icick R, Andreassen OA, Etain B, Melle I (2016)
Alcohol use disorders are associated with increased affective lability in bipolar disorder
J Affect Disord, 208, 316-324
PubMed 27810713

Lange EH, Nerland S, Jørgensen KN, Mørch-Johnsen L, Nesvåg R, Hartberg CB, Haukvik UK, Osnes K, Melle I, Andreassen OA, Agartz I (2016)
Alcohol use is associated with thinner cerebral cortex and larger ventricles in schizophrenia, bipolar disorder and healthy controls
Psychol Med, 47 (4), 655-668
PubMed 27830632

Lo MT, Hinds DA, Tung JY, Franz C, Fan CC, Wang Y, Smeland OB, Schork A, Holland D, Kauppi K, Sanyal N, Escott-Price V, Smith DJ, O'Donovan M, Stefansson H, Bjornsdottir G, Thorgeirsson TE, Stefansson K, McEvoy LK, Dale AM, Andreassen OA, Chen CH (2016)
Genome-wide analyses for personality traits identify six genomic loci and show correlations with psychiatric disorders
Nat Genet, 49 (1), 152-156
PubMed 27918536

Mehta D, Tropf FC, Gratten J, Bakshi A, Zhu Z, Bacanu SA, Hemani G, Magnusson PK, Barban N, Esko T, Metspalu A, Snieder H, Mowry BJ, Kendler KS, Yang J, Visscher PM, McGrath JJ, Mills MC, Wray NR, Lee SH, Schizophrenia Working Group of the Psychiatric Genomics Consortium, LifeLines Cohort Study, and TwinsUK, Andreassen OA, Bramon E, Bruggeman R, Buxbaum JD et al. (2016)
Evidence for Genetic Overlap Between Schizophrenia and Age at First Birth in Women
JAMA Psychiatry, 73 (5), 497-505
PubMed 27007234

Mäki-Marttunen T, Halnes G, Devor A, Witoelar A, Bettella F, Djurovic S, Wang Y, Einevoll GT, Andreassen OA, Dale AM (2016)
Functional Effects of Schizophrenia-Linked Genetic Variants on Intrinsic Single-Neuron Excitability: A Modeling Study
Biol Psychiatry Cogn Neurosci Neuroimaging, 1 (1), 49-59
PubMed 26949748

Mørch-Johnsen L, Nesvåg R, Jørgensen KN, Lange EH, Hartberg CB, Haukvik UK, Kompus K, Westerhausen R, Osnes K, Andreassen OA, Melle I, Hugdahl K, Agartz I (2016)
Auditory Cortex Characteristics in Schizophrenia: Associations With Auditory Hallucinations
Schizophr Bull, 43 (1), 75-83
PubMed 27605526

Mørch RH, Dieset I, Færden A, Hope S, Aas M, Nerhus M, Gardsjord ES, Joa I, Morken G, Agartz I, Aukrust P, Djurovic S, Melle I, Ueland T, Andreassen OA (2016)
Inflammatory evidence for the psychosis continuum model
Psychoneuroendocrinology, 67, 189-97
PubMed 26923849

Nerhus M, Berg AO, Kvitland LR, Dieset I, Hope S, Dahl SR, Weibell MA, Romm KL, Faerden A, Andreassen OA, Melle I (2016)
Low vitamin D is associated with negative and depressive symptoms in psychotic disorders
Schizophr Res, 178 (1-3), 44-49
PubMed 27595553

Oedegaard KJ, Alda M, Anand A, Andreassen OA, Balaraman Y, Berrettini WH, Bhattacharjee A, Brennand KJ, Burdick KE, Calabrese JR, Calkin CV, Claasen A, Coryell WH, Craig D, DeModena A, Frye M, Gage FH, Gao K, Garnham J, Gershon E, Jakobsen P, Leckband SG, McCarthy MJ, McInnis MG, Maihofer AX et al. (2016)
The Pharmacogenomics of Bipolar Disorder study (PGBD): identification of genes for lithium response in a prospective sample
BMC Psychiatry, 16, 129
PubMed 27150464

Ormstad H, Dahl J, Verkerk R, Andreassen OA, Maes M (2016)
Increased plasma levels of competing amino acids, rather than lowered plasma tryptophan levels, are associated with a non-response to treatment in major depression
Eur Neuropsychopharmacol, 26 (8), 1286-96
PubMed 27237997

Peng Q, Schork A, Bartsch H, Lo MT, Panizzon MS, Pediatric Imaging, Neurocognition and Genetics Study, Alzheimer’s Disease Neuroimaging Initiative, Westlye LT, Kremen WS, Jernigan TL, Le Hellard S, Steen VM, Espeseth T, Huentelman M, Håberg AK, Agartz I, Djurovic S, Andreassen OA, Dale AM, Schork NJ, Chen CH (2016)
Conservation of Distinct Genetically-Mediated Human Cortical Pattern
PLoS Genet, 12 (7), e1006143
PubMed 27459196

Quintana DS, Elstad M, Kaufmann T, Brandt CL, Haatveit B, Haram M, Nerhus M, Westlye LT, Andreassen OA (2016)
Resting-state high-frequency heart rate variability is related to respiratory frequency in individuals with severe mental illness but not healthy controls
Sci Rep, 6, 37212
PubMed 27853244

Quintana DS, Outhred T, Westlye LT, Malhi GS, Andreassen OA (2016)
The impact of oxytocin administration on brain activity: a systematic review and meta-analysis protocol
Syst Rev, 5 (1), 205
PubMed 27899138

Quintana DS, Westlye LT, Alnæs D, Rustan ØG, Kaufmann T, Smerud KT, Mahmoud RA, Djupesland PG, Andreassen OA (2016)
Low dose intranasal oxytocin delivered with Breath Powered device dampens amygdala response to emotional stimuli: A peripheral effect-controlled within-subjects randomized dose-response fMRI trial
Psychoneuroendocrinology, 69, 180-8
PubMed 27107209

Quintana DS, Westlye LT, Smerud KT, Mahmoud RA, Djupesland PG, Andreassen OA (2016)
Reliability of basal plasma vasopressin concentrations in healthy male adults
Acta Neuropsychiatr, 1-7 (in press)
PubMed 27923411

Ringen PA, Nesvåg R, Helle S, Lagerberg TV, Lange EH, Løberg EM, Agartz I, Andreassen OA, Melle I (2016)
Premorbid cannabis use is associated with more symptoms and poorer functioning in schizophrenia spectrum disorder
Psychol Med, 46 (15), 3127-3136
PubMed 27534999

Skåtun KC, Kaufmann T, Doan NT, Alnæs D, Córdova-Palomera A, Jönsson EG, Fatouros-Bergman H, Flyckt L, KaSP, Melle I, Andreassen OA, Agartz I, Westlye LT (2016)
Consistent Functional Connectivity Alterations in Schizophrenia Spectrum Disorder: A Multisite Study
Schizophr Bull (in press)
PubMed 27872268

Skåtun KC, Kaufmann T, Tønnesen S, Biele G, Melle I, Agartz I, Alnæs D, Andreassen OA, Westlye LT (2016)
Global brain connectivity alterations in patients with schizophrenia and bipolar spectrum disorders
J Psychiatry Neurosci, 41 (5), 331-41
PubMed 26854755

Solberg DK, Bentsen H, Refsum H, Andreassen OA (2016)
Lipid profiles in schizophrenia associated with clinical traits: a five year follow-up study
BMC Psychiatry, 16, 299
PubMed 27562545

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Ueland T, Spigset O, Andreassen OA (2016)
Serum levels of second-generation antipsychotics are associated with cognitive function in psychotic disorders
World J Biol Psychiatry, 1-12 (in press)
PubMed 27712130

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Vaskinn A, Spigset O, Andreassen OA (2016)
Serum concentrations of mood stabilizers are associated with memory, but not other cognitive domains in psychosis spectrum disorders; explorative analyses in a naturalistic setting
Int J Bipolar Disord, 4 (1), 24
PubMed 27858347

Steen VM, Skrede S, Polushina T, López M, Andreassen OA, Fernø J, Hellard SL (2016)
Genetic evidence for a role of the SREBP transcription system and lipid biosynthesis in schizophrenia and antipsychotic treatment
Eur Neuropsychopharmacol (in press)
PubMed 27492885

Tesli M, Wirgenes KV, Hughes T, Bettella F, Athanasiu L, Hoseth ES, Nerhus M, Lagerberg TV, Steen NE, Agartz I, Melle I, Dieset I, Djurovic S, Andreassen OA (2016)
VRK2 gene expression in schizophrenia, bipolar disorder and healthy controls
Br J Psychiatry, 209 (2), 114-20
PubMed 26941264

Uhlirova H, Kılıç K, Tian P, Sakadžić S, Gagnon L, Thunemann M, Desjardins M, Saisan PA, Nizar K, Yaseen MA, Hagler DJ, Vandenberghe M, Djurovic S, Andreassen OA, Silva GA, Masliah E, Kleinfeld D, Vinogradov S, Buxton RB, Einevoll GT, Boas DA, Dale AM, Devor A (2016)
The roadmap for estimation of cell-type-specific neuronal activity from non-invasive measurements
Philos Trans R Soc Lond B Biol Sci, 371 (1705)
PubMed 27574309

Uhlirova H, Kılıç K, Tian P, Thunemann M, Desjardins M, Saisan PA, Sakadžić S, Ness TV, Mateo C, Cheng Q, Weldy KL, Razoux F, Vandenberghe M, Cremonesi JA, Ferri CG, Nizar K, Sridhar VB, Steed TC, Abashin M, Fainman Y, Masliah E, Djurovic S, Andreassen OA, Silva GA, Boas DA et al. (2016)
Cell type specificity of neurovascular coupling in cerebral cortex
Elife, 5
PubMed 27244241

Valstad M, Alvares GA, Andreassen OA, Westlye LT, Quintana DS (2016)
The relationship between central and peripheral oxytocin concentrations: a systematic review and meta-analysis protocol
Syst Rev, 5, 49
PubMed 27037015

van Hulzen KJ, Scholz CJ, Franke B, Ripke S, Klein M, McQuillin A, Sonuga-Barke EJ, PGC ADHD Working Group, Kelsoe JR, Landén M, Andreassen OA, PGC Bipolar Disorder Working Group, Lesch KP, Weber H, Faraone SV, Arias-Vasquez A, Reif A (2016)
Genetic Overlap Between Attention-Deficit/Hyperactivity Disorder and Bipolar Disorder: Evidence From Genome-wide Association Study Meta-analysis
Biol Psychiatry (in press)
PubMed 27890468

Vijayaraghavan S, Darreh-Shori T, Rongve A, Berge G, Sando SB, White LR, Auestad BH, Witoelar A, Andreassen OA, Ulstein ID, Aarsland D (2016)
Association of Butyrylcholinesterase-K Allele and Apolipoprotein E ɛ4 Allele with Cognitive Decline in Dementia with Lewy Bodies and Alzheimer's Disease
J Alzheimers Dis, 50 (2), 567-76
PubMed 26757188

Wang Y, Bos SD, Harbo HF, Thompson WK, Schork AJ, Bettella F, Witoelar A, Lie BA, Li W, McEvoy LK, Djurovic S, Desikan RS, Dale AM, Andreassen OA (2016)
Genetic overlap between multiple sclerosis and several cardiovascular disease risk factors
Mult Scler, 22 (14), 1783-1793
PubMed 26920376

Wang Y, Thompson WK, Schork AJ, Holland D, Chen CH, Bettella F, Desikan RS, Li W, Witoelar A, Zuber V, Devor A, Bipolar Disorder and Schizophrenia Working Group of the Psychiatric Genomics Consortium, Enhancing Neuro Imaging Genetics through Meta Analysis Consortium, Nöthen MM, Rietschel M, Chen Q, Werge T, Cichon S, Weinberger DR, Djurovic S, O'Donovan M, Visscher PM, Andreassen OA, Dale AM (2016)
Leveraging Genomic Annotations and Pleiotropic Enrichment for Improved Replication Rates in Schizophrenia GWAS
PLoS Genet, 12 (1), e1005803
PubMed 26808560

Yokoyama JS, Wang Y, Schork AJ, Thompson WK, Karch CM, Cruchaga C, McEvoy LK, Witoelar A, Chen CH, Holland D, Brewer JB, Franke A, Dillon WP, Wilson DM, Mukherjee P, Hess CP, Miller Z, Bonham LW, Shen J, Rabinovici GD, Rosen HJ, Miller BL, Hyman BT, Schellenberg GD, Karlsen TH et al. (2016)
Association Between Genetic Traits for Immune-Mediated Diseases and Alzheimer Disease
JAMA Neurol, 73 (6), 691-7
PubMed 27088644

Zuber V, Marconett CN, Shi J, Hua X, Wheeler W, Yang C, Song L, Dale AM, Laplana M, Risch A, Witoelar A, Thompson WK, Schork AJ, Bettella F, Wang Y, Djurovic S, Zhou B, Borok Z, van der Heijden HF, de Graaf J, Swinkels D, Aben KK, McKay J, Hung RJ, Bikeböller H et al. (2016)
Pleiotropic Analysis of Lung Cancer and Blood Triglycerides
J Natl Cancer Inst, 108 (12)
PubMed 27565901

Aas M, Andreassen OA, Aminoff SR, Færden A, Romm KL, Nesvåg R, Berg AO, Simonsen C, Agartz I, Melle I (2016)
A history of childhood trauma is associated with slower improvement rates: Findings from a one-year follow-up study of patients with a first-episode psychosis
BMC Psychiatry, 16, 126
PubMed 27146044

Aas M, Henry C, Andreassen OA, Bellivier F, Melle I, Etain B (2016)
The role of childhood trauma in bipolar disorders
Int J Bipolar Disord, 4 (1), 2
PubMed 26763504

Aas M, Henry C, Bellivier F, Lajnef M, Gard S, Kahn JP, Lagerberg TV, Aminoff SR, Bjella T, Leboyer M, Andreassen OA, Melle I, Etain B (2016)
Affective lability mediates the association between childhood trauma and suicide attempts, mixed episodes and co-morbid anxiety disorders in bipolar disorders
Psychol Med, 47 (5), 902-912
PubMed 27894372

Aas M, Kauppi K, Brandt CL, Tesli M, Kaufmann T, Steen NE, Agartz I, Westlye LT, Andreassen OA, Melle I (2016)
Childhood trauma is associated with increased brain responses to emotionally negative as compared with positive faces in patients with psychotic disorders
Psychol Med, 47 (4), 669-679
PubMed 27834153

Publications 2015

Alnæs D, Kaufmann T, Richard G, Duff EP, Sneve MH, Endestad T, Nordvik JE, Andreassen OA, Smith SM, Westlye LT (2015)
Attentional load modulates large-scale functional brain connectivity beyond the core attention networks
Neuroimage, 109, 260-72
PubMed 25595500

Alnæs D, Sneve MH, Richard G, Skåtun KC, Kaufmann T, Nordvik JE, Andreassen OA, Endestad T, Laeng B, Westlye LT (2015)
Functional connectivity indicates differential roles for the intraparietal sulcus and the superior parietal lobule in multiple object tracking
Neuroimage, 123, 129-37
PubMed 26299796

Aminoff SR, Tesli M, Bettella F, Aas M, Lagerberg TV, Djurovic S, Andreassen OA, Melle I (2015)
Polygenic risk scores in bipolar disorder subgroups
J Affect Disord, 183, 310-4
PubMed 26047958

Andreassen OA, Desikan RS, Wang Y, Thompson WK, Schork AJ, Zuber V, Doncheva NT, Ellinghaus E, Albrecht M, Mattingsdal M, Franke A, Lie BA, Mills IG, Aukrust P, McEvoy LK, Djurovic S, Karlsen TH, Dale AM (2015)
Abundant genetic overlap between blood lipids and immune-mediated diseases indicates shared molecular genetic mechanisms
PLoS One, 10 (4), e0123057
PubMed 25853426

Andreassen OA, Desikan RS, Wang Y, Thompson WK, Schork AJ, Zuber V, Doncheva NT, Ellinghaus E, Albrecht M, Mattingsdal M, Franke A, Lie BA, Mills IG, Aukrust P, McEvoy LK, Djurovic S, Karlsen TH, Dale AM (2015)
Correction: Abundant Genetic Overlap between Blood Lipids and Immune-Mediated Diseases Indicates Shared Molecular Genetic Mechanisms
PLoS One, 10 (5), e0128048
PubMed 25978331

Andreassen OA, Thompson WK, Schork AJ, Ripke S, Mattingsdal M, Kelsoe JR, Kendler KS, O'Donovan MC, Rujescu D, Werge T, Sklar P, Psychiatric Genomics Consortium (PGC), Bipolar Disorder and Schizophrenia Working Groups, Roddey JC, Chen CH, McEvoy L, Desikan RS, Djurovic S, Dale AM (2015)
Correction: Improved Detection of Common Variants Associated with Schizophrenia and Bipolar Disorder Using Pleiotropy-Informed Conditional False Discovery Rate
PLoS Genet, 11 (11), e1005544
PubMed 26540268

Athanasiu L, Smorr LL, Tesli M, Røssberg JI, Sønderby IE, Spigset O, Djurovic S, Andreassen OA (2015)
Genome-wide association study identifies common variants associated with pharmacokinetics of psychotropic drugs
J Psychopharmacol, 29 (8), 884-91
PubMed 25944848

Barrett EA, Mork E, Færden A, Nesvåg R, Agartz I, Andreassen OA, Melle I (2015)
The development of insight and its relationship with suicidality over one year follow-up in patients with first episode psychosis
Schizophr Res, 162 (1-3), 97-102
PubMed 25620119

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Baune BT, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Wo Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, Gonzalez-Pinto A et al. (2015)
Influence of light exposure during early life on the age of onset of bipolar disorder
J Psychiatr Res, 64, 1-8
PubMed 25862378

Berg AO, Barrett EA, Nerhus M, Büchman C, Simonsen C, Faerden A, Andreassen OA, Melle I (2015)
Psychosis: clinical insight and beliefs in immigrants in their first episode
Early Interv Psychiatry (in press)
PubMed 26663787

Bigdeli TB, Ripke S, Bacanu SA, Lee SH, Wray NR, Gejman PV, Rietschel M, Cichon S, St Clair D, Corvin A, Kirov G, McQuillin A, Gurling H, Rujescu D, Andreassen OA, Werge T, Blackwood DH, Pato CN, Pato MT, Malhotra AK, O'Donovan MC, Kendler KS, Fanous AH, Schizophrenia Working Group of the Psychiatric Genomics Consortium (2015)
Genome-wide association study reveals greater polygenic loading for schizophrenia in cases with a family history of illness
Am J Med Genet B Neuropsychiatr Genet, 171B (2), 276-89
PubMed 26663532

Bolstad I, Andreassen OA, Groote I, Server A, Sjaastad I, Kapur S, Jensen J (2015)
Effects of haloperidol and aripiprazole on the human mesolimbic motivational system: A pharmacological fMRI study
Eur Neuropsychopharmacol, 25 (12), 2252-61
PubMed 26476705

Bolstad I, Andreassen OA, Groote IR, Haatveit B, Server A, Jensen J (2015)
No difference in frontal cortical activity during an executive functioning task after acute doses of aripiprazole and haloperidol
Front Hum Neurosci, 9, 296
PubMed 26074803

Brandt CL, Doan NT, Tønnesen S, Agartz I, Hugdahl K, Melle I, Andreassen OA, Westlye LT (2015)
Assessing brain structural associations with working-memory related brain patterns in schizophrenia and healthy controls using linked independent component analysis
Neuroimage Clin, 9, 253-63
PubMed 26509112

Brandt CL, Kaufmann T, Agartz I, Hugdahl K, Jensen J, Ueland T, Haatveit B, Skatun KC, Doan NT, Melle I, Andreassen OA, Westlye LT (2015)
Cognitive Effort and Schizophrenia Modulate Large-Scale Functional Brain Connectivity
Schizophr Bull, 41 (6), 1360-9
PubMed 25731885

Chen CH, Peng Q, Schork AJ, Lo MT, Fan CC, Wang Y, Desikan RS, Bettella F, Hagler DJ, Pediatric Imaging, Neurocognition and Genetics Study, Alzheimer’s Disease Neuroimaging Initiative, Westlye LT, Kremen WS, Jernigan TL, Le Hellard S, Steen VM, Espeseth T, Huentelman M, Håberg AK, Agartz I, Djurovic S, Andreassen OA, Schork N, Dale AM, Pediatric Imaging Neurocognition and Genetics Study et al. (2015)
Large-scale genomics unveil polygenic architecture of human cortical surface area
Nat Commun, 6, 7549
PubMed 26189703

Dahl J, Andreassen OA, Verkerk R, Malt UF, Sandvik L, Brundin L, Ormstad H (2015)
Ongoing episode of major depressive disorder is not associated with elevated plasma levels of kynurenine pathway markers
Psychoneuroendocrinology, 56, 12-22
PubMed 25770856

Desikan RS, Schork AJ, Wang Y, Thompson WK, Dehghan A, Ridker PM, Chasman DI, McEvoy LK, Holland D, Chen CH, Karow DS, Brewer JB, Hess CP, Williams J, Sims R, O'Donovan MC, Choi SH, Bis JC, Ikram MA, Gudnason V, DeStefano AL, van der Lee SJ, Psaty BM, van Duijn CM, Launer L et al. (2015)
Polygenic Overlap Between C-Reactive Protein, Plasma Lipids, and Alzheimer Disease
Circulation, 131 (23), 2061-9
PubMed 25862742

Desikan RS, Schork AJ, Wang Y, Witoelar A, Sharma M, McEvoy LK, Holland D, Brewer JB, Chen CH, Thompson WK, Harold D, Williams J, Owen MJ, O'Donovan MC, Pericak-Vance MA, Mayeux R, Haines JL, Farrer LA, Schellenberg GD, Heutink P, Singleton AB, Brice A, Wood NW, Hardy J, Martinez M et al. (2015)
Genetic overlap between Alzheimer's disease and Parkinson's disease at the MAPT locus
Mol Psychiatry, 20 (12), 1588-95
PubMed 25687773

Fretland RA, Andersson S, Sundet K, Andreassen OA, Melle I, Vaskinn A (2015)
Theory of mind in schizophrenia: error types and associations with symptoms
Schizophr Res, 162 (1-3), 42-6
PubMed 25623602

Goulart LF, Bettella F, Sønderby IE, Schork AJ, Thompson WK, Mattingsdal M, Steen VM, Zuber V, Wang Y, Dale AM, PRACTICAL/ELLIPSE consortium, Andreassen OA, Djurovic S (2015)
MicroRNAs enrichment in GWAS of complex human phenotypes
BMC Genomics, 16, 304
PubMed 25884492

Haram M, Tesli M, Bettella F, Djurovic S, Andreassen OA, Melle I (2015)
Association between Genetic Variation in the Oxytocin Receptor Gene and Emotional Withdrawal, but not between Oxytocin Pathway Genes and Diagnosis in Psychotic Disorders
Front Hum Neurosci, 9, 9
PubMed 25667571

Hartberg CB, Jørgensen KN, Haukvik UK, Westlye LT, Melle I, Andreassen OA, Agartz I (2015)
Lithium treatment and hippocampal subfields and amygdala volumes in bipolar disorder
Bipolar Disord, 17 (5), 496-506
PubMed 25809287

Haug E, Øie M, Andreassen OA, Bratlien U, Nelson B, Melle I, Møller P (2015)
High levels of anomalous self-experience are associated with longer duration of untreated psychosis
Early Interv Psychiatry, 11 (2), 133-138
PubMed 25589153

Haukvik UK, Hartberg CB, Nerland S, Jørgensen KN, Lange EH, Simonsen C, Nesvåg R, Dale AM, Andreassen OA, Melle I, Agartz I (2015)
No progressive brain changes during a 1-year follow-up of patients with first-episode psychosis
Psychol Med, 46 (3), 589-98
PubMed 26526001

Helle S, Ringen PA, Melle I, Larsen TK, Gjestad R, Johnsen E, Lagerberg TV, Andreassen OA, Kroken RA, Joa I, Ten Velden Hegelstad W, Løberg EM (2015)
Cannabis use is associated with 3years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N=1119)
Schizophr Res, 170 (1), 217-21
PubMed 26682958

Hibar DP, Stein JL, Renteria ME, Arias-Vasquez A, Desrivières S, Jahanshad N, Toro R, Wittfeld K, Abramovic L, Andersson M, Aribisala BS, Armstrong NJ, Bernard M, Bohlken MM, Boks MP, Bralten J, Brown AA, Chakravarty MM, Chen Q, Ching CR, Cuellar-Partida G, den Braber A, Giddaluru S, Goldman AL, Grimm O et al. (2015)
Common genetic variants influence human subcortical brain structures
Nature, 520 (7546), 224-9
PubMed 25607358

Hoeffding LK, Duong LT, Ingason A, Rosengren A, Sorbanski E, Witt SH, Djurovic S, Andreassen OA, Hansen T, Werge T, Rasmussen HB (2015)
Identification of rare high-risk copy number variants affecting the dopamine transporter gene in mental disorders
Nord J Psychiatry, 70 (4), 276-9
PubMed 26559242

Hope S, Hoseth E, Dieset I, Mørch RH, Aas M, Aukrust P, Djurovic S, Melle I, Ueland T, Agartz I, Ueland T, Westlye LT, Andreassen OA (2015)
Inflammatory markers are associated with general cognitive abilities in schizophrenia and bipolar disorder patients and healthy controls
Schizophr Res, 165 (2-3), 188-94
PubMed 25956633

Hoseth EZ, Westlye LT, Hope S, Dieset I, Aukrust P, Melle I, Haukvik UK, Agartz I, Ueland T, Ueland T, Andreassen OA (2015)
Association between cytokine levels, verbal memory and hippocampus volume in psychotic disorders and healthy controls
Acta Psychiatr Scand, 133 (1), 53-62
PubMed 26189721

Howrigan DP, Simonson MA, Davies G, Harris SE, Tenesa A, Starr JM, Liewald DC, Deary IJ, McRae A, Wright MJ, Montgomery GW, Hansell N, Martin NG, Payton A, Horan M, Ollier WE, Abdellaoui A, Boomsma DI, DeRosse P, Knowles EE, Glahn DC, Djurovic S, Melle I, Andreassen OA, Christoforou A et al. (2015)
Genome-wide autozygosity is associated with lower general cognitive ability
Mol Psychiatry, 21 (6), 837-43
PubMed 26390830

Hughes T, Hansson L, Sønderby IE, Athanasiu L, Zuber V, Tesli M, Song J, Hultman CM, Bergen SE, Landén M, Melle I, Andreassen OA, Djurovic S (2015)
A Loss-of-Function Variant in a Minor Isoform of ANK3 Protects Against Bipolar Disorder and Schizophrenia
Biol Psychiatry, 80 (4), 323-30
PubMed 26682468

Haatveit B, Vaskinn A, Sundet KS, Jensen J, Andreassen OA, Melle I, Ueland T (2015)
Stability of executive functions in first episode psychosis: One year follow up study
Psychiatry Res, 228 (3), 475-81
PubMed 26165960

Johansson MM, Van Geystelen A, Larmuseau MH, Djurovic S, Andreassen OA, Agartz I, Jazin E (2015)
Microarray Analysis of Copy Number Variants on the Human Y Chromosome Reveals Novel and Frequent Duplications Overrepresented in Specific Haplogroups
PLoS One, 10 (8), e0137223
PubMed 26322892

Jørgensen KN, Skjærvø I, Mørch-Johnsen L, Haukvik UK, Lange EH, Melle I, Andreassen OA, Agartz I (2015)
Cigarette smoking is associated with thinner cingulate and insular cortices in patients with severe mental illness
J Psychiatry Neurosci, 40 (4), 241-9
PubMed 25672482

Kaufmann T, Elvsåshagen T, Alnæs D, Zak N, Pedersen PØ, Norbom LB, Quraishi SH, Tagliazucchi E, Laufs H, Bjørnerud A, Malt UF, Andreassen OA, Roussos E, Duff EP, Smith SM, Groote IR, Westlye LT (2015)
The brain functional connectome is robustly altered by lack of sleep
Neuroimage, 127, 324-32
PubMed 26712339

Kaufmann T, Skåtun KC, Alnæs D, Doan NT, Duff EP, Tønnesen S, Roussos E, Ueland T, Aminoff SR, Lagerberg TV, Agartz I, Melle IS, Smith SM, Andreassen OA, Westlye LT (2015)
Disintegration of Sensorimotor Brain Networks in Schizophrenia
Schizophr Bull, 41 (6), 1326-35
PubMed 25943122

Kvitland LR, Melle I, Aminoff SR, Demmo C, Lagerberg TV, Andreassen OA, Ringen PA (2015)
Continued cannabis use at one year follow up is associated with elevated mood and lower global functioning in bipolar I disorder
BMC Psychiatry, 15, 11
PubMed 25651990

Lagerberg TV, Icick R, Andreassen OA, Ringen PA, Etain B, Aas M, Henry C, Bjella TD, Melle I, Bellivier F (2015)
Cannabis use disorder is associated with greater illness severity in tobacco smoking patients with bipolar disorder
J Affect Disord, 190, 286-93
PubMed 26544611

LeBlanc M, Zuber V, Andreassen BK, Witoelar A, Zeng L, Bettella F, Wang Y, McEvoy LK, Thompson WK, Schork AJ, Reppe S, Barrett-Connor E, Ligthart S, Dehghan A, Gautvik KM, Nelson CP, Schunkert H, Samani NJ, CARDIoGRAM Consortium, Ridker PM, Chasman DI, Aukrust P, Djurovic S, Frigessi A, Desikan RS et al. (2015)
Identifying Novel Gene Variants in Coronary Artery Disease and Shared Genes With Several Cardiovascular Risk Factors
Circ Res, 118 (1), 83-94
PubMed 26487741

Lee SH, Byrne EM, Hultman CM, Kähler A, Vinkhuyzen AA, Ripke S, Andreassen OA, Frisell T, Gusev A, Hu X, Karlsson R, Mantzioris VX, McGrath JJ, Mehta D, Stahl EA, Zhao Q, Kendler KS, Sullivan PF, Price AL, O'Donovan M, Okada Y, Mowry BJ, Raychaudhuri S, Wray NR, Schizophrenia Working Group of the Psychiatric Genomics Consortium and Rheumatoid Arthritis Consortium International et al. (2015)
New data and an old puzzle: the negative association between schizophrenia and rheumatoid arthritis
Int J Epidemiol, 44 (5), 1706-21
PubMed 26286434

Mellerup E, Andreassen OA, Bennike B, Dam H, Djurovic S, Hansen T, Jorgensen MB, Kessing LV, Koefoed P, Melle I, Mors O, Werge T, Moeller GL (2015)
Combinations of Genetic Data Present in Bipolar Patients, but Absent in Control Persons
PLoS One, 10 (11), e0143432
PubMed 26587987

Mørch-Johnsen L, Nesvåg R, Faerden A, Haukvik UK, Jørgensen KN, Lange EH, Andreassen OA, Melle I, Agartz I (2015)
Brain structure abnormalities in first-episode psychosis patients with persistent apathy
Schizophr Res, 164 (1-3), 59-64
PubMed 25818626

Nerhus M, Berg AO, Dahl SR, Holvik K, Gardsjord ES, Weibell MA, Bjella TD, Andreassen OA, Melle I (2015)
Vitamin D status in psychotic disorder patients and healthy controls--The influence of ethnic background
Psychiatry Res, 230 (2), 616-21
PubMed 26500071

Oltedal L, Kessler U, Ersland L, Grüner R, Andreassen OA, Haavik J, Hoff PI, Hammar Å, Dale AM, Hugdahl K, Oedegaard KJ (2015)
Effects of ECT in treatment of depression: study protocol for a prospective neuroradiological study of acute and longitudinal effects on brain structure and function
BMC Psychiatry, 15, 94
PubMed 25927716

Quintana DS, Guastella AJ, Westlye LT, Andreassen OA (2015)
The promise and pitfalls of intranasally administering psychopharmacological agents for the treatment of psychiatric disorders
Mol Psychiatry, 21 (1), 29-38
PubMed 26552590

Quintana DS, Westlye LT, Kaufmann T, Rustan ØG, Brandt CL, Haatveit B, Steen NE, Andreassen OA (2015)
Reduced heart rate variability in schizophrenia and bipolar disorder compared to healthy controls
Acta Psychiatr Scand, 133 (1), 44-52
PubMed 26371411

Quintana DS, Westlye LT, Rustan ØG, Tesli N, Poppy CL, Smevik H, Tesli M, Røine M, Mahmoud RA, Smerud KT, Djupesland PG, Andreassen OA (2015)
Low-dose oxytocin delivered intranasally with Breath Powered device affects social-cognitive behavior: a randomized four-way crossover trial with nasal cavity dimension assessment
Transl Psychiatry, 5, e602
PubMed 26171983

Rahm C, Liberg B, Reckless G, Ousdal O, Melle I, Andreassen OA, Agartz I (2015)
Negative symptoms in schizophrenia show association with amygdala volumes and neural activation during affective processing
Acta Neuropsychiatr, 27 (4), 213-20
PubMed 25777814

Reckless GE, Andreassen OA, Server A, Østefjells T, Jensen J (2015)
Negative symptoms in schizophrenia are associated with aberrant striato-cortical connectivity in a rewarded perceptual decision-making task
Neuroimage Clin, 8, 290-7
PubMed 26106553

Reppe S, Wang Y, Thompson WK, McEvoy LK, Schork AJ, Zuber V, LeBlanc M, Bettella F, Mills IG, Desikan RS, Djurovic S, Gautvik KM, Dale AM, Andreassen OA, GEFOS Consortium (2015)
Genetic Sharing with Cardiovascular Disease Risk Factors and Diabetes Reveals Novel Bone Mineral Density Loci
PLoS One, 10 (12), e0144531
PubMed 26695485

Robinson MR, Hemani G, Medina-Gomez C, Mezzavilla M, Esko T, Shakhbazov K, Powell JE, Vinkhuyzen A, Berndt SI, Gustafsson S, Justice AE, Kahali B, Locke AE, Pers TH, Vedantam S, Wood AR, van Rheenen W, Andreassen OA, Gasparini P, Metspalu A, Berg LH, Veldink JH, Rivadeneira F, Werge TM, Abecasis GR et al. (2015)
Population genetic differentiation of height and body mass index across Europe
Nat Genet, 47 (11), 1357-62
PubMed 26366552

Schoeyen HK, Kessler U, Andreassen OA, Auestad BH, Bergsholm P, Malt UF, Morken G, Oedegaard KJ, Vaaler A (2015)
Response to Kellner and Fink
Am J Psychiatry, 172 (3), 295-6
PubMed 25727543

Schoeyen HK, Kessler U, Andreassen OA, Auestad BH, Bergsholm P, Malt UF, Morken G, Oedegaard KJ, Vaaler A (2015)
Response to Kotzalidis et al
Am J Psychiatry, 172 (3), 294-5
PubMed 25727541

Schork AJ, Wang Y, Thompson WK, Dale AM, Andreassen OA (2015)
New statistical approaches exploit the polygenic architecture of schizophrenia--implications for the underlying neurobiology
Curr Opin Neurobiol, 36, 89-98
PubMed 26555806

Solberg DK, Bentsen H, Refsum H, Andreassen OA (2015)
Association between serum lipids and membrane fatty acids and clinical characteristics in patients with schizophrenia
Acta Psychiatr Scand, 132 (4), 293-300
PubMed 25597473

Srinivasan S, Bettella F, Mattingsdal M, Wang Y, Witoelar A, Schork AJ, Thompson WK, Zuber V, Schizophrenia Working Group of the Psychiatric Genomics Consortium, The International Headache Genetics Consortium, Winsvold BS, Zwart JA, Collier DA, Desikan RS, Melle I, Werge T, Dale AM, Djurovic S, Andreassen OA (2015)
Genetic Markers of Human Evolution Are Enriched in Schizophrenia
Biol Psychiatry, 80 (4), 284-92
PubMed 26681495

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Vaskinn A, Spigset O, Andreassen OA (2015)
Serum level of venlafaxine is associated with better memory in psychotic disorders
Schizophr Res, 169 (1-3), 386-92
PubMed 26516101

Steinan MK, Morken G, Lagerberg TV, Melle I, Andreassen OA, Vaaler AE, Scott J (2015)
Delayed sleep phase: An important circadian subtype of sleep disturbance in bipolar disorders
J Affect Disord, 191, 156-63
PubMed 26655861

Steinan MK, Scott J, Lagerberg TV, Melle I, Andreassen OA, Vaaler AE, Morken G (2015)
Sleep problems in bipolar disorders: more than just insomnia
Acta Psychiatr Scand, 133 (5), 368-77
PubMed 26590799

Steinberg S, Stefansson H, Jonsson T, Johannsdottir H, Ingason A, Helgason H, Sulem P, Magnusson OT, Gudjonsson SA, Unnsteinsdottir U, Kong A, Helisalmi S, Soininen H, Lah JJ, DemGene, Aarsland D, Fladby T, Ulstein ID, Djurovic S, Sando SB, White LR, Knudsen GP, Westlye LT, Selbæk G, Giegling I et al. (2015)
Loss-of-function variants in ABCA7 confer risk of Alzheimer's disease
Nat Genet, 47 (5), 445-7
PubMed 25807283

Tesli M, Kauppi K, Bettella F, Brandt CL, Kaufmann T, Espeseth T, Mattingsdal M, Agartz I, Melle I, Djurovic S, Westlye LT, Andreassen OA (2015)
Altered Brain Activation during Emotional Face Processing in Relation to Both Diagnosis and Polygenic Risk of Bipolar Disorder
PLoS One, 10 (7), e0134202
PubMed 26222050

Thompson PM, Andreassen OA, Arias-Vasquez A, Bearden CE, Boedhoe PS, Brouwer RM, Buckner RL, Buitelaar JK, Bulayeva KB, Cannon DM, Cohen RA, Conrod PJ, Dale AM, Deary IJ, Dennis EL, de Reus MA, Desrivieres S, Dima D, Donohoe G, Fisher SE, Fouche JP, Francks C, Frangou S, Franke B, Ganjgahi H et al. (2015)
ENIGMA and the individual: Predicting factors that affect the brain in 35 countries worldwide
Neuroimage, 145 (Pt B), 389-408
PubMed 26658930

Thompson WK, Wang Y, Schork AJ, Witoelar A, Zuber V, Xu S, Werge T, Holland D, Schizophrenia Working Group of the Psychiatric Genomics Consortium, Andreassen OA, Dale AM (2015)
An Empirical Bayes Mixture Model for Effect Size Distributions in Genome-Wide Association Studies
PLoS Genet, 11 (12), e1005717
PubMed 26714184

Trampush JW, Lencz T, Knowles E, Davies G, Guha S, Pe'er I, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, Mukherjee S, DeRosse P, Lundervold A, Steen VM, John M, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B et al. (2015)
Independent evidence for an association between general cognitive ability and a genetic locus for educational attainment
Am J Med Genet B Neuropsychiatr Genet, 168B (5), 363-73
PubMed 25951819

van Erp TG, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MW, Koenders L, de Haan L, Veltman DJ et al. (2015)
Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium
Mol Psychiatry, 21 (4), 585
PubMed 26283641

van Erp TG, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MW, Koenders L, de Haan L, Veltman DJ et al. (2015)
Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium
Mol Psychiatry, 21 (4), 547-53
PubMed 26033243

Vaskinn A, Hartberg CB, Sundet K, Westlye LT, Andreassen OA, Melle I, Agartz I (2015)
To the editors: Reply to Anna R. Docherty
Psychiatry Res, 233 (3), 497
PubMed 26319295

Vaskinn A, Hartberg CB, Sundet K, Westlye LT, Andreassen OA, Melle I, Agartz I (2015)
Brain structure characteristics in intellectually superior schizophrenia
Psychiatry Res, 232 (1), 123-9
PubMed 25754688

Vaskinn A, Ventura J, Andreassen OA, Melle I, Sundet K (2015)
A social path to functioning in schizophrenia: From social self-efficacy through negative symptoms to social functional capacity
Psychiatry Res, 228 (3), 803-7
PubMed 26089018

Zayats T, Athanasiu L, Sonderby I, Djurovic S, Westlye LT, Tamnes CK, Fladby T, Aase H, Zeiner P, Reichborn-Kjennerud T, Knappskog PM, Knudsen GP, Andreassen OA, Johansson S, Haavik J (2015)
Genome-wide analysis of attention deficit hyperactivity disorder in Norway
PLoS One, 10 (4), e0122501
PubMed 25875332

Østefjells T, Melle I, Hagen R, Romm KL, Sönmez N, Andreassen OA, Røssberg JI (2015)
Unhelpful metacognitive beliefs in early psychosis are associated with affective symptoms and childhood social adjustment
Schizophr Res, 169 (1-3), 280-5
PubMed 26519990

Publications 2014

Andreassen OA, Harbo HF, Wang Y, Thompson WK, Schork AJ, Mattingsdal M, Zuber V, Bettella F, Ripke S, Kelsoe JR, Kendler KS, O'Donovan MC, Sklar P, Psychiatric Genomics Consortium (PGC) Bipolar Disorder and Schizophrenia Work Groups, International Multiple Sclerosis Genetics Consortium (IMSGC), McEvoy LK, Desikan RS, Lie BA, Djurovic S, Dale AM (2014)
Genetic pleiotropy between multiple sclerosis and schizophrenia but not bipolar disorder: differential involvement of immune-related gene loci
Mol Psychiatry, 20 (2), 207-14
PubMed 24468824

Andreassen OA, McEvoy LK, Thompson WK, Wang Y, Reppe S, Schork AJ, Zuber V, Barrett-Connor E, Gautvik K, Aukrust P, Karlsen TH, Djurovic S, Desikan RS, Dale AM, International Consortium for Blood Pressure Genome-Wide Association Studies, Genetic Factors for Osteoporosis Consortium (2014)
Identifying common genetic variants in blood pressure due to polygenic pleiotropy with associated phenotypes
Hypertension, 63 (4), 819-26
PubMed 24396023

Andreassen OA, Zuber V, Thompson WK, Schork AJ, Bettella F, PRACTICAL Consortium, CRUK GWAS, Djurovic S, Desikan RS, Mills IG, Dale AM (2014)
Shared common variants in prostate cancer and blood lipids
Int J Epidemiol, 43 (4), 1205-14
PubMed 24786909

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, Gonzalez-Pinto A, Harima H et al. (2014)
Influence of birth cohort on age of onset cluster analysis in bipolar I disorder
Eur Psychiatry, 30 (1), 99-105
PubMed 25498240

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, González-Pinto A, Harima H et al. (2014)
Relationship between sunlight and the age of onset of bipolar disorder: an international multisite study
J Affect Disord, 167, 104-11
PubMed 24953482

Berg AO, Andreassen OA, Aminoff SR, Romm KL, Hauff E, Melle I (2014)
The impact of immigration and visible minority status on psychosis symptom profile
Soc Psychiatry Psychiatr Epidemiol, 49 (11), 1747-57
PubMed 24927946

Berg AO, Aas M, Larsson S, Nerhus M, Hauff E, Andreassen OA, Melle I (2014)
Childhood trauma mediates the association between ethnic minority status and more severe hallucinations in psychotic disorder
Psychol Med, 45 (1), 133-42
PubMed 25065296

Boraska V, Franklin CS, Floyd JA, Thornton LM, Huckins LM, Southam L, Rayner NW, Tachmazidou I, Klump KL, Treasure J, Lewis CM, Schmidt U, Tozzi F, Kiezebrink K, Hebebrand J, Gorwood P, Adan RA, Kas MJ, Favaro A, Santonastaso P, Fernández-Aranda F, Gratacos M, Rybakowski F, Dmitrzak-Weglarz M, Kaprio J et al. (2014)
A genome-wide association study of anorexia nervosa
Mol Psychiatry, 19 (10), 1085-94
PubMed 24514567

Brandt CL, Eichele T, Melle I, Sundet K, Server A, Agartz I, Hugdahl K, Jensen J, Andreassen OA (2014)
Working memory networks and activation patterns in schizophrenia and bipolar disorder: comparison with healthy controls
Br J Psychiatry, 204, 290-8
PubMed 24434074

Bratlien U, Øie M, Haug E, Møller P, Andreassen OA, Lien L, Melle I (2014)
Environmental factors during adolescence associated with later development of psychotic disorders - a nested case-control study
Psychiatry Res, 215 (3), 579-85
PubMed 24495574

Dahl J, Ormstad H, Aass HC, Malt UF, Bendz LT, Sandvik L, Brundin L, Andreassen OA (2014)
The plasma levels of various cytokines are increased during ongoing depression and are reduced to normal levels after recovery
Psychoneuroendocrinology, 45, 77-86
PubMed 24845179

Desikan RS, Thompson WK, Holland D, Hess CP, Brewer JB, Zetterberg H, Blennow K, Andreassen OA, McEvoy LK, Hyman BT, Dale AM, Alzheimer’s Disease Neuroimaging Initiative Group (2014)
The role of clusterin in amyloid-β-associated neurodegeneration
JAMA Neurol, 71 (2), 180-7
PubMed 24378367

Dieset I, Haukvik UK, Melle I, Røssberg JI, Ueland T, Hope S, Dale AM, Djurovic S, Aukrust P, Agartz I, Andreassen OA (2014)
Association between altered brain morphology and elevated peripheral endothelial markers--implications for psychotic disorders
Schizophr Res, 161 (2-3), 222-8
PubMed 25433965

Finseth PI, Morken G, Malt UF, Andreassen OA, Vaaler AE (2014)
Risk factors of cycle acceleration in acutely admitted patients with bipolar disorder
Acta Psychiatr Scand, 130 (5), 388-96
PubMed 24962060

Gjevik E, Sandstad B, Andreassen OA, Myhre AM, Sponheim E (2014)
Exploring the agreement between questionnaire information and DSM-IV diagnoses of comorbid psychopathology in children with autism spectrum disorders
Autism, 19 (4), 433-42
PubMed 24637430

Grellmann C, Bitzer S, Neumann J, Westlye LT, Andreassen OA, Villringer A, Horstmann A (2014)
Comparison of variants of canonical correlation analysis and partial least squares for combined analysis of MRI and genetic data
Neuroimage, 107, 289-310
PubMed 25527238

Haram M, Tesli M, Dieset I, Steen NE, Røssberg JI, Djurovic S, Andreassen OA, Melle I (2014)
An attempt to identify single nucleotide polymorphisms contributing to possible relationships between personality traits and oxytocin-related genes
Neuropsychobiology, 69 (1), 25-30
PubMed 24458227

Haug E, Øie M, Andreassen OA, Bratlien U, Nelson B, Aas M, Møller P, Melle I (2014)
Anomalous self-experience and childhood trauma in first-episode schizophrenia
Compr Psychiatry, 56, 35-41
PubMed 25458477

Haukvik UK, Westlye LT, Mørch-Johnsen L, Jørgensen KN, Lange EH, Dale AM, Melle I, Andreassen OA, Agartz I (2014)
In vivo hippocampal subfield volumes in schizophrenia and bipolar disorder
Biol Psychiatry, 77 (6), 581-8
PubMed 25127742

Hugdahl K, Craven AR, Nygård M, Løberg EM, Berle JØ, Johnsen E, Kroken R, Specht K, Andreassen OA, Ersland L (2014)
Glutamate as a mediating transmitter for auditory hallucinations in schizophrenia: a (1)H MRS study
Schizophr Res, 161 (2-3), 252-60
PubMed 25542859

Kauppi K, Westlye LT, Tesli M, Bettella F, Brandt CL, Mattingsdal M, Ueland T, Espeseth T, Agartz I, Melle I, Djurovic S, Andreassen OA (2014)
Polygenic risk for schizophrenia associated with working memory-related prefrontal brain activation in patients with schizophrenia and healthy controls
Schizophr Bull, 41 (3), 736-43
PubMed 25392519

Kessler U, Schoeyen HK, Andreassen OA, Eide GE, Malt UF, Oedegaard KJ, Morken G, Sundet K, Vaaler AE (2014)
The effect of electroconvulsive therapy on neurocognitive function in treatment-resistant bipolar disorder depression
J Clin Psychiatry, 75 (11), e1306-13
PubMed 25470096

Kvitland LR, Melle I, Aminoff SR, Lagerberg TV, Andreassen OA, Ringen PA (2014)
Cannabis use in first-treatment bipolar I disorder: relations to clinical characteristics
Early Interv Psychiatry, 10 (1), 36-44
PubMed 24739233

Ousdal OT, Andreassen OA, Server A, Jensen J (2014)
Increased amygdala and visual cortex activity and functional connectivity towards stimulus novelty is associated with state anxiety
PLoS One, 9 (4), e96146
PubMed 24755617

Ousdal OT, Specht K, Server A, Andreassen OA, Dolan RJ, Jensen J (2014)
The human amygdala encodes value and space during decision making
Neuroimage, 101, 712-9
PubMed 25094017

Reckless GE, Ousdal OT, Server A, Walter H, Andreassen OA, Jensen J (2014)
The left inferior frontal gyrus is involved in adjusting response bias during a perceptual decision-making task
Brain Behav, 4 (3), 398-407
PubMed 24944869

Ringen PA, Engh JA, Birkenaes AB, Dieset I, Andreassen OA (2014)
Increased mortality in schizophrenia due to cardiovascular disease - a non-systematic review of epidemiology, possible causes, and interventions
Front Psychiatry, 5, 137
PubMed 25309466

Schoeyen HK, Kessler U, Andreassen OA, Auestad BH, Bergsholm P, Malt UF, Morken G, Oedegaard KJ, Vaaler A (2014)
Treatment-resistant bipolar depression: a randomized controlled trial of electroconvulsive therapy versus algorithm-based pharmacological treatment
Am J Psychiatry, 172 (1), 41-51
PubMed 25219389

Sonmez N, Hagen R, Andreassen OA, Romm KL, Grande M, Jensen LH, Morrison AP, Melle I, Rossberg JI (2014)
Cognitive Behavior Therapy in First-Episode Psychosis With a Focus on Depression, Anxiety, and Self-Esteem
Cogn. Behav. Pract., 21 (1), 43-54

Steen NE, Methlie P, Lorentzen S, Dieset I, Aas M, Nerhus M, Haram M, Agartz I, Melle I, Berg JP, Andreassen OA (2014)
Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders
J Psychiatr Res, 52, 57-62
PubMed 24534618

Tesli M, Espeseth T, Bettella F, Mattingsdal M, Aas M, Melle I, Djurovic S, Andreassen OA (2014)
Polygenic risk score and the psychosis continuum model
Acta Psychiatr Scand, 130 (4), 311-7
PubMed 24961959

Thompson PM, Stein JL, Medland SE, Hibar DP, Vasquez AA, Renteria ME, Toro R, Jahanshad N, Schumann G, Franke B, Wright MJ, Martin NG, Agartz I, Alda M, Alhusaini S, Almasy L, Almeida J, Alpert K, Andreasen NC, Andreassen OA, Apostolova LG, Appel K, Armstrong NJ, Aribisala B, Bastin ME et al. (2014)
The ENIGMA Consortium: large-scale collaborative analyses of neuroimaging and genetic data
Brain Imaging Behav, 8 (2), 153-82
PubMed 24399358

Vaskinn A, Ueland T, Melle I, Agartz I, Andreassen OA, Sundet K (2014)
Neurocognitive Decrements are Present in Intellectually Superior Schizophrenia
Front Psychiatry, 5, 45
PubMed 24847284

Wirgenes KV, Tesli M, Inderhaug E, Athanasiu L, Agartz I, Melle I, Hughes T, Andreassen OA, Djurovic S (2014)
ANK3 gene expression in bipolar disorder and schizophrenia
Br J Psychiatry, 205 (3), 244-5
PubMed 24809399

Zablocki RW, Schork AJ, Levine RA, Andreassen OA, Dale AM, Thompson WK (2014)
Covariate-modulated local false discovery rate for genome-wide association studies
Bioinformatics, 30 (15), 2098-104
PubMed 24711653

Zai CC, Manchia M, Sønderby IE, Yilmaz Z, De Luca V, Tiwari AK, Squassina A, Zai GC, Shaikh SA, Strauss J, King N, Le Foll B, Kaplan AS, Finseth PI, Vaaler AE, Djurovic S, Andreassen OA, Vincent JB, Kennedy JL (2014)
Investigation of the genetic interaction between BDNF and DRD3 genes in suicidical behaviour in psychiatric disorders
World J Biol Psychiatry, 16 (3), 171-9
PubMed 25264289

Aas M, Aminoff SR, Vik Lagerberg T, Etain B, Agartz I, Andreassen OA, Melle I (2014)
Affective lability in patients with bipolar disorders is associated with high levels of childhood trauma
Psychiatry Res, 218 (1-2), 252-5
PubMed 24803185

Aas M, Haukvik UK, Djurovic S, Tesli M, Athanasiu L, Bjella T, Hansson L, Cattaneo A, Agartz I, Andreassen OA, Melle I (2014)
Interplay between childhood trauma and BDNF val66met variants on blood BDNF mRNA levels and on hippocampus subfields volumes in schizophrenia spectrum and bipolar disorders
J Psychiatr Res, 59, 14-21
PubMed 25246365

Aas M, Pedersen G, Henry C, Bjella T, Bellivier F, Leboyer M, Kahn JP, Cohen RF, Gard S, Aminoff SR, Lagerberg TV, Andreassen OA, Melle I, Etain B (2014)
Psychometric properties of the Affective Lability Scale (54 and 18-item version) in patients with bipolar disorder, first-degree relatives, and healthy controls
J Affect Disord, 172, 375-80
PubMed 25451440

Publications 2013

Aberg KA, Liu Y, Bukszár J, McClay JL, Khachane AN, Andreassen OA, Blackwood D, Corvin A, Djurovic S, Gurling H, Ophoff R, Pato CN, Pato MT, Riley B, Webb T, Kendler K, O'Donovan M, Craddock N, Kirov G, Owen M, Rujescu D, St Clair D, Werge T, Hultman CM, Delisi LE et al. (2013)
A comprehensive family-based replication study of schizophrenia genes
JAMA Psychiatry, 70 (6), 573-81
PubMed 23894747

Aminoff SR, Hellvin T, Lagerberg TV, Berg AO, Andreassen OA, Melle I (2013)
Neurocognitive features in subgroups of bipolar disorder
Bipolar Disord, 15 (3), 272-83
PubMed 23521608

Andreassen OA (2013)
Would Kraepelin reconsider the distinction between schizophrenia and bipolar disorder if he had access to recent molecular genetics evidence?
Acta Neuropsychiatr., 25 (6), 309-310

Andreassen OA, Djurovic S, Thompson WK, Schork AJ, Kendler KS, O'Donovan MC, Rujescu D, Werge T, van de Bunt M, Morris AP, McCarthy MI, International Consortium for Blood Pressure GWAS, Diabetes Genetics Replication and Meta-analysis Consortium, Psychiatric Genomics Consortium Schizophrenia Working Group, Roddey JC, McEvoy LK, Desikan RS, Dale AM (2013)
Improved detection of common variants associated with schizophrenia by leveraging pleiotropy with cardiovascular-disease risk factors
Am J Hum Genet, 92 (2), 197-209
PubMed 23375658

Andreassen OA, Thompson WK, Dale AM (2013)
Boosting the power of schizophrenia genetics by leveraging new statistical tools
Schizophr Bull, 40 (1), 13-7
PubMed 24319118

Andreassen OA, Thompson WK, Schork AJ, Ripke S, Mattingsdal M, Kelsoe JR, Kendler KS, O'Donovan MC, Rujescu D, Werge T, Sklar P, Psychiatric Genomics Consortium (PGC), Bipolar Disorder and Schizophrenia Working Groups, Roddey JC, Chen CH, McEvoy L, Desikan RS, Djurovic S, Dale AM (2013)
Improved detection of common variants associated with schizophrenia and bipolar disorder using pleiotropy-informed conditional false discovery rate
PLoS Genet, 9 (4), e1003455
PubMed 23637625

Bergmann O, Haukvik UK, Brown AA, Rimol LM, Hartberg CB, Athanasiu L, Melle I, Djurovic S, Andreassen OA, Dale AM, Agartz I (2013)
ZNF804A and cortical thickness in schizophrenia and bipolar disorder
Psychiatry Res, 212 (2), 154-7
PubMed 23562677

Bolstad I, Andreassen OA, Reckless GE, Sigvartsen NP, Server A, Jensen J (2013)
Aversive event anticipation affects connectivity between the ventral striatum and the orbitofrontal cortex in an fMRI avoidance task
PLoS One, 8 (6), e68494
PubMed 23826392

Bourne C, Aydemir Ö, Balanzá-Martínez V, Bora E, Brissos S, Cavanagh JT, Clark L, Cubukcuoglu Z, Dias VV, Dittmann S, Ferrier IN, Fleck DE, Frangou S, Gallagher P, Jones L, Kieseppä T, Martínez-Aran A, Melle I, Moore PB, Mur M, Pfennig A, Raust A, Senturk V, Simonsen C, Smith DJ et al. (2013)
Neuropsychological testing of cognitive impairment in euthymic bipolar disorder: an individual patient data meta-analysis
Acta Psychiatr Scand, 128 (3), 149-62
PubMed 23617548

Bratlien U, Øie M, Haug E, Møller P, Andreassen OA, Lien L, Melle I (2013)
Self-reported symptoms and health service use in adolescence in persons who later develop psychotic disorders: a prospective case-control study
Early Interv Psychiatry, 9 (3), 221-7
PubMed 24224904

Cross-Disorder Group of the Psychiatric Genomics Consortium, Lee SH, Ripke S, Neale BM, Faraone SV, Purcell SM, Perlis RH, Mowry BJ, Thapar A, Goddard ME, Witte JS, Absher D, Agartz I, Akil H, Amin F, Andreassen OA, Anjorin A, Anney R, Anttila V, Arking DE, Asherson P, Azevedo MH, Backlund L, Badner JA, Bailey AJ et al. (2013)
Genetic relationship between five psychiatric disorders estimated from genome-wide SNPs
Nat Genet, 45 (9), 984-94
PubMed 23933821

Desikan RS, Thompson WK, Holland D, Hess CP, Brewer JB, Zetterberg H, Blennow K, Andreassen OA, McEvoy LK, Hyman BT, Dale AM, Alzheimer’s Disease Neuroimaging Initiative (2013)
Heart fatty acid binding protein and Aβ-associated Alzheimer's neurodegeneration
Mol Neurodegener, 8, 39
PubMed 24088526

Elvsåshagen T, Westlye LT, Bøen E, Hol PK, Andersson S, Andreassen OA, Boye B, Malt UF (2013)
Evidence for reduced dentate gyrus and fimbria volume in bipolar II disorder
Bipolar Disord, 15 (2), 167-76
PubMed 23317454

Elvsåshagen T, Westlye LT, Bøen E, Hol PK, Andreassen OA, Boye B, Malt UF (2013)
Bipolar II disorder is associated with thinning of prefrontal and temporal cortices involved in affect regulation
Bipolar Disord, 15 (8), 855-64
PubMed 23980618

Etain B, Aas M, Andreassen OA, Lorentzen S, Dieset I, Gard S, Kahn JP, Bellivier F, Leboyer M, Melle I, Henry C (2013)
Childhood trauma is associated with severe clinical characteristics of bipolar disorders
J Clin Psychiatry, 74 (10), 991-8
PubMed 24229750

Faerden A, Barrett EA, Nesvåg R, Friis S, Finset A, Marder SR, Ventura J, Andreassen OA, Agartz I, Melle I (2013)
Apathy, poor verbal memory and male gender predict lower psychosocial functioning one year after the first treatment of psychosis
Psychiatry Res, 210 (1), 55-61
PubMed 23489592

Fernandes CP, Christoforou A, Giddaluru S, Ersland KM, Djurovic S, Mattheisen M, Lundervold AJ, Reinvang I, Nöthen MM, Rietschel M, Ophoff RA, Genetic Risk and Outcome of Psychosis (GROUP), Hofman A, Uitterlinden AG, Werge T, Cichon S, Espeseth T, Andreassen OA, Steen VM, Le Hellard S (2013)
A genetic deconstruction of neurocognitive traits in schizophrenia and bipolar disorder
PLoS One, 8 (12), e81052
PubMed 24349030

Finseth PI, Sønderby IE, Djurovic S, Agartz I, Malt UF, Melle I, Morken G, Andreassen OA, Vaaler AE, Tesli M (2013)
Association analysis between suicidal behaviour and candidate genes of bipolar disorder and schizophrenia
J Affect Disord, 163, 110-4
PubMed 24461634

Hansen CF, Torgalsbøen AK, Røssberg JI, Romm KL, Andreassen OA, Bell MD, Melle I (2013)
Object relations, reality testing, and social withdrawal in schizophrenia and bipolar disorder
J Nerv Ment Dis, 201 (3), 222-5
PubMed 23407207

Haug E, Øie M, Andreassen OA, Bratlien U, Raballo A, Nelson B, Møller P, Melle I (2013)
Anomalous self-experiences contribute independently to social dysfunction in the early phases of schizophrenia and psychotic bipolar disorder
Compr Psychiatry, 55 (3), 475-82
PubMed 24378241

Haukvik UK, McNeil T, Lange EH, Melle I, Dale AM, Andreassen OA, Agartz I (2013)
Pre- and perinatal hypoxia associated with hippocampus/amygdala volume in bipolar disorder
Psychol Med, 44 (5), 975-85
PubMed 23803260

Haukvik UK, Rimol LM, Roddey JC, Hartberg CB, Lange EH, Vaskinn A, Melle I, Andreassen OA, Dale A, Agartz I (2013)
Normal birth weight variation is related to cortical morphology across the psychosis spectrum
Schizophr Bull, 40 (2), 410-9
PubMed 23419977

Hellvin T, Sundet K, Aminoff SR, Andreassen OA, Melle I (2013)
Social functioning in first contact mania: clinical and neurocognitive correlates
Compr Psychiatry, 54 (5), 432-8
PubMed 23351832

Henry C, Andreassen OA, Barbato A, Demotes-Mainard J, Goodwin G, Leboyer M, Vieta E, Nolen WA, Kessing LV, Scott J, Bauer M, ENBREC study group (2013)
European Network of Bipolar Research Expert Centre (ENBREC): a network to foster research and promote innovative care
Int J Bipolar Disord, 1, 2
PubMed 25505669

Hibar DP, Medland SE, Stein JL, Kim S, Shen L, Saykin AJ, de Zubicaray GI, McMahon KL, Montgomery GW, Martin NG, Wright MJ, Djurovic S, Agartz IA, Andreassen OA, Thompson PM (2013)
Genetic Clustering on the Hippocampal Surface for Genome-Wide Association Studies
LECT NOTES COMPUT SC, 8150, 690-697

Hibar DP, Medland SE, Stein JL, Kim S, Shen L, Saykin AJ, de Zubicaray GI, McMahon KL, Montgomery GW, Martin NG, Wright MJ, Djurovic S, Agartz IA, Andreassen OA, Thompson PM (2013)
Genetic clustering on the hippocampal surface for genome-wide association studies
Med Image Comput Comput Assist Interv, 16 (Pt 2), 690-7
PubMed 24579201

Hope S, Ueland T, Steen NE, Dieset I, Lorentzen S, Berg AO, Agartz I, Aukrust P, Andreassen OA (2013)
Interleukin 1 receptor antagonist and soluble tumor necrosis factor receptor 1 are associated with general severity and psychotic symptoms in schizophrenia and bipolar disorder
Schizophr Res, 145 (1-3), 36-42
PubMed 23403415

Kessler U, Schoeyen HK, Andreassen OA, Eide GE, Hammar Å, Malt UF, Oedegaard KJ, Morken G, Sundet K, Vaaler AE (2013)
Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression
BMC Psychiatry, 13, 105
PubMed 23557429

Lagerberg TV, Kvitland LR, Aminoff SR, Aas M, Ringen PA, Andreassen OA, Melle I (2013)
Indications of a dose-response relationship between cannabis use and age at onset in bipolar disorder
Psychiatry Res, 215 (1), 101-4
PubMed 24262665

Lange EH, Nesvåg R, Ringen PA, Hartberg CB, Haukvik UK, Andreassen OA, Melle I, Agartz I (2013)
One year follow-up of alcohol and illicit substance use in first-episode psychosis: does gender matter?
Compr Psychiatry, 55 (2), 274-82
PubMed 24262129

Larsson S, Aas M, Klungsøyr O, Agartz I, Mork E, Steen NE, Barrett EA, Lagerberg TV, Røssberg JI, Melle I, Andreassen OA, Lorentzen S (2013)
Patterns of childhood adverse events are associated with clinical characteristics of bipolar disorder
BMC Psychiatry, 13, 97
PubMed 23522391

Lencz T, Knowles E, Davies G, Guha S, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, Mukherjee S, DeRosse P, Lundervold A, Steen VM, John M, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B, Ikeda M, Roussos P et al. (2013)
Molecular genetic evidence for overlap between general cognitive ability and risk for schizophrenia: a report from the Cognitive Genomics consorTium (COGENT)
Mol Psychiatry, 19 (2), 168-74
PubMed 24342994

Liu JZ, Hov JR, Folseraas T, Ellinghaus E, Rushbrook SM, Doncheva NT, Andreassen OA, Weersma RK, Weismüller TJ, Eksteen B, Invernizzi P, Hirschfield GM, Gotthardt DN, Pares A, Ellinghaus D, Shah T, Juran BD, Milkiewicz P, Rust C, Schramm C, Müller T, Srivastava B, Dalekos G, Nöthen MM, Herms S et al. (2013)
Dense genotyping of immune-related disease regions identifies nine new risk loci for primary sclerosing cholangitis
Nat Genet, 45 (6), 670-5
PubMed 23603763

Mork E, Walby FA, Harkavy-Friedman JM, Barrett EA, Steen NE, Lorentzen S, Andreassen OA, Melle I, Mehlum L (2013)
Clinical characteristics in schizophrenia patients with or without suicide attempts and non-suicidal self-harm--a cross-sectional study
BMC Psychiatry, 13, 255
PubMed 24106884

Nerhus M, Berg AO, Haram M, Kvitland LR, Andreassen OA, Melle I (2013)
Migrant background and ethnic minority status as predictors for duration of untreated psychosis
Early Interv Psychiatry, 9 (1), 61-5
PubMed 24225002

Nesvåg R, Schaer M, Haukvik UK, Westlye LT, Rimol LM, Lange EH, Hartberg CB, Ottet MC, Melle I, Andreassen OA, Jönsson EG, Agartz I, Eliez S (2013)
Reduced brain cortical folding in schizophrenia revealed in two independent samples
Schizophr Res, 152 (2-3), 333-8
PubMed 24365403

Reckless GE, Bolstad I, Nakstad PH, Andreassen OA, Jensen J (2013)
Motivation alters response bias and neural activation patterns in a perceptual decision-making task
Neuroscience, 238, 135-47
PubMed 23428623

Ruderfer DM, Fanous AH, Ripke S, McQuillin A, Amdur RL, Schizophrenia Working Group of Psychiatric Genomics Consortium, Bipolar Disorder Working Group of Psychiatric Genomics Consortium, Cross-Disorder Working Group of Psychiatric Genomics Consortium, Gejman PV, O'Donovan MC, Andreassen OA, Djurovic S, Hultman CM, Kelsoe JR, Jamain S, Landén M, Leboyer M, Nimgaonkar V, Nurnberger J, Smoller JW, Craddock N, Corvin A, Sullivan PF, Holmans P, Sklar P et al. (2013)
Polygenic dissection of diagnosis and clinical dimensions of bipolar disorder and schizophrenia
Mol Psychiatry, 19 (9), 1017-24
PubMed 24280982

Schoeyen HK, Melle I, Sundet K, Aminoff SR, Hellvin T, Auestad BH, Morken G, Andreassen OA (2013)
Occupational outcome in bipolar disorder is not predicted by premorbid functioning and intelligence
Bipolar Disord, 15 (3), 294-305
PubMed 23527993

Schork AJ, Thompson WK, Pham P, Torkamani A, Roddey JC, Sullivan PF, Kelsoe JR, O'Donovan MC, Furberg H, Tobacco and Genetics Consortium, Bipolar Disorder Psychiatric Genomics Consortium, Schizophrenia Psychiatric Genomics Consortium, Schork NJ, Andreassen OA, Dale AM (2013)
All SNPs are not created equal: genome-wide association studies reveal a consistent pattern of enrichment among functionally annotated SNPs
PLoS Genet, 9 (4), e1003449
PubMed 23637621

Tesli M, Egeland R, Sønderby IE, Haukvik UK, Bettella F, Hibar DP, Thompson PM, Rimol LM, Melle I, Agartz I, Djurovic S, Andreassen OA (2013)
No evidence for association between bipolar disorder risk gene variants and brain structural phenotypes
J Affect Disord, 151 (1), 291-7
PubMed 23820096

Tesli M, Skatun KC, Ousdal OT, Brown AA, Thoresen C, Agartz I, Melle I, Djurovic S, Jensen J, Andreassen OA (2013)
CACNA1C risk variant and amygdala activity in bipolar disorder, schizophrenia and healthy controls
PLoS One, 8 (2), e56970
PubMed 23437284

Thoresen C, Endestad T, Sigvartsen NP, Server A, Bolstad I, Johansson M, Andreassen OA, Jensen J (2013)
Frontotemporal hypoactivity during a reality monitoring paradigm is associated with delusions in patients with schizophrenia spectrum disorders
Cogn Neuropsychiatry, 19 (2), 97-115
PubMed 23756081

Vaskinn A, Sundet K, Ueland T, Agartz I, Melle I, Andreassen OA (2013)
Social cognition and clinical insight in schizophrenia and bipolar disorder
J Nerv Ment Dis, 201 (6), 445-51
PubMed 23686158

Welander-Vatn A, Jensen J, Otnaess MK, Agartz I, Server A, Melle I, Andreassen OA (2013)
The neural correlates of cognitive control in bipolar I disorder: an fMRI study of medial frontal cortex activation during a Go/No-go task
Neurosci Lett, 549, 51-6
PubMed 23778236

Aas M, Etain B, Bellivier F, Henry C, Lagerberg T, Ringen A, Agartz I, Gard S, Kahn JP, Leboyer M, Andreassen OA, Melle I (2013)
Additive effects of childhood abuse and cannabis abuse on clinical expressions of bipolar disorders
Psychol Med, 44 (8), 1653-62
PubMed 24028906

Aas M, Haukvik UK, Djurovic S, Bergmann Ø, Athanasiu L, Tesli MS, Hellvin T, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2013)
BDNF val66met modulates the association between childhood trauma, cognitive and brain abnormalities in psychoses
Prog Neuropsychopharmacol Biol Psychiatry, 46, 181-8
PubMed 23876786

Publications 2012

Aminoff SR, Jensen J, Lagerberg TV, Hellvin T, Sundet K, Andreassen OA, Melle I (2012)
An association between affective lability and executive functioning in bipolar disorder
Psychiatry Res, 198 (1), 58-61
PubMed 22405635

Andreou D, Saetre P, Werge T, Andreassen OA, Agartz I, Sedvall GC, Hall H, Terenius L, Jönsson EG (2012)
D-amino acid oxidase activator gene (DAOA) variation affects cerebrospinal fluid homovanillic acid concentrations in healthy Caucasians
Eur Arch Psychiatry Clin Neurosci, 262 (7), 549-56
PubMed 22454242

Athanasiu L, Brown AA, Birkenaes AB, Mattingsdal M, Agartz I, Melle I, Steen VM, Andreassen OA, Djurovic S (2012)
Genome-wide association study identifies genetic loci associated with body mass index and high density lipoprotein-cholesterol levels during psychopharmacological treatment - a cross-sectional naturalistic study
Psychiatry Res, 197 (3), 327-36
PubMed 22417934

Bakken TE, Roddey JC, Djurovic S, Akshoomoff N, Amaral DG, Bloss CS, Casey BJ, Chang L, Ernst TM, Gruen JR, Jernigan TL, Kaufmann WE, Kenet T, Kennedy DN, Kuperman JM, Murray SS, Sowell ER, Rimol LM, Mattingsdal M, Melle I, Agartz I, Andreassen OA, Schork NJ, Dale AM, Alzheimer's Disease Neuroimaging Initiative et al. (2012)
Association of common genetic variants in GPCPD1 with scaling of visual cortical surface area in humans
Proc Natl Acad Sci U S A, 109 (10), 3985-90
PubMed 22343285

Bauer M, Glenn T, Alda M, Andreassen OA, Ardau R, Bellivier F, Berk M, Bjella TD, Bossini L, Del Zompo M, Dodd S, Fagiolini A, Frye MA, Gonzalez-Pinto A, Henry C, Kapczinski F, Kliwicki S, König B, Kunz M, Lafer B, Lopez-Jaramillo C, Manchia M, Marsh W, Martinez-Cengotitabengoa M, Melle I et al. (2012)
Impact of sunlight on the age of onset of bipolar disorder
Bipolar Disord, 14 (6), 654-63
PubMed 22612720

Bratlien U, Øie M, Lien L, Agartz I, Lie Romm K, Vaskinn A, Ueland T, Andreassen OA, Melle I (2012)
Social dysfunction in first-episode psychosis and relations to neurocognition, duration of untreated psychosis and clinical symptoms
Psychiatry Res, 207 (1-2), 33-9
PubMed 23153893

Brown AA, Jensen J, Nikolova YS, Djurovic S, Agartz I, Server A, Ferrell RE, Manuck SB, Mattingsdal M, Melle I, Hariri AR, Frigessi A, Andreassen OA (2012)
Genetic variants affecting the neural processing of human facial expressions: evidence using a genome-wide functional imaging approach
Transl Psychiatry, 2, e143
PubMed 22828495

Christoforou A, Dondrup M, Mattingsdal M, Mattheisen M, Giddaluru S, Nöthen MM, Rietschel M, Cichon S, Djurovic S, Andreassen OA, Jonassen I, Steen VM, Puntervoll P, Le Hellard S (2012)
Linkage-disequilibrium-based binning affects the interpretation of GWASs
Am J Hum Genet, 90 (4), 727-33
PubMed 22444669

Desikan RS, McEvoy LK, Holland D, Thompson WK, Brewer JB, Aisen PS, Andreassen OA, Hyman BT, Sperling RA, Dale AM, Alzheimer's Disease Neuroimaging Initiative (2012)
Apolipoprotein E epsilon4 does not modulate amyloid-β-associated neurodegeneration in preclinical Alzheimer disease
AJNR Am J Neuroradiol, 34 (3), 505-10
PubMed 22976236

Dieset I, Djurovic S, Tesli M, Hope S, Mattingsdal M, Michelsen A, Joa I, Larsen TK, Agartz I, Melle I, Røssberg JI, Aukrust P, Andreassen OA, Ueland T (2012)
Up-regulation of NOTCH4 gene expression in bipolar disorder
Am J Psychiatry, 169 (12), 1292-300
PubMed 23212060

Dieset I, Hope S, Ueland T, Bjella T, Agartz I, Melle I, Aukrust P, Røssberg JI, Andreassen OA (2012)
Cardiovascular risk factors during second generation antipsychotic treatment are associated with increased C-reactive protein
Schizophr Res, 140 (1-3), 169-74
PubMed 22817875

Engedal K, Brækhus A, Andreassen OA, Nakstad PH (2012)
Diagnosis of dementia--automatic quantification of brain structures
Tidsskr Nor Laegeforen, 132 (15), 1747-51
PubMed 22929941

Ersland KM, Christoforou A, Stansberg C, Espeseth T, Mattheisen M, Mattingsdal M, Hardarson GA, Hansen T, Fernandes CP, Giddaluru S, Breuer R, Strohmaier J, Djurovic S, Nöthen MM, Rietschel M, Lundervold AJ, Werge T, Cichon S, Andreassen OA, Reinvang I, Steen VM, Le Hellard S (2012)
Gene-based analysis of regionally enriched cortical genes in GWAS data sets of cognitive traits and psychiatric disorders
PLoS One, 7 (2), e31687
PubMed 22384057

Finseth PI, Morken G, Andreassen OA, Malt UF, Vaaler AE (2012)
Risk factors related to lifetime suicide attempts in acutely admitted bipolar disorder inpatients
Bipolar Disord, 14 (7), 727-34
PubMed 22998124

Hansen CF, Torgalsbøen AK, Røssberg JI, Andreassen OA, Bell MD, Melle I (2012)
Object relations and reality testing in schizophrenia, bipolar disorders, and healthy controls: differences in profiles and clinical correlates
Compr Psychiatry, 53 (8), 1200-7
PubMed 22578986

Haug E, Lien L, Raballo A, Bratlien U, Oie M, Andreassen OA, Melle I, Møller P (2012)
Selective aggregation of self-disorders in first-treatment DSM-IV schizophrenia spectrum disorders
J Nerv Ment Dis, 200 (7), 632-6
PubMed 22759943

Hellvin T, Sundet K, Simonsen C, Aminoff SR, Lagerberg TV, Andreassen OA, Melle I (2012)
Neurocognitive functioning in patients recently diagnosed with bipolar disorder
Bipolar Disord, 14 (3), 227-38
PubMed 22548896

Holmén A, Juuhl-Langseth M, Thormodsen R, Ueland T, Agartz I, Sundet K, Andreassen OA, Rund BR, Melle I (2012)
Executive function in early- and adult onset schizophrenia
Schizophr Res, 142 (1-3), 177-82
PubMed 23102692

Holtze M, Saetre P, Engberg G, Schwieler L, Werge T, Andreassen OA, Hall H, Terenius L, Agartz I, Jönsson EG, Schalling M, Erhardt S (2012)
Kynurenine 3-monooxygenase polymorphisms: relevance for kynurenic acid synthesis in patients with schizophrenia and healthy controls
J Psychiatry Neurosci, 37 (1), 53-7
PubMed 21693093

Håvik B, Degenhardt FA, Johansson S, Fernandes CP, Hinney A, Scherag A, Lybæk H, Djurovic S, Christoforou A, Ersland KM, Giddaluru S, O'Donovan MC, Owen MJ, Craddock N, Mühleisen TW, Mattheisen M, Schimmelmann BG, Renner T, Warnke A, Herpertz-Dahlmann B, Sinzig J, Albayrak Ö, Rietschel M, Nöthen MM, Bramham CR et al. (2012)
DCLK1 variants are associated across schizophrenia and attention deficit/hyperactivity disorder
PLoS One, 7 (4), e35424
PubMed 22539971

Jónsdóttir H, Opjordsmoen S, Birkenaes AB, Simonsen C, Engh JA, Ringen PA, Vaskinn A, Friis S, Sundet K, Andreassen OA (2012)
Predictors of medication adherence in patients with schizophrenia and bipolar disorder
Acta Psychiatr Scand, 127 (1), 23-33
PubMed 22900964

Jonsson T, Atwal JK, Steinberg S, Snaedal J, Jonsson PV, Bjornsson S, Stefansson H, Sulem P, Gudbjartsson D, Maloney J, Hoyte K, Gustafson A, Liu Y, Lu Y, Bhangale T, Graham RR, Huttenlocher J, Bjornsdottir G, Andreassen OA, Jönsson EG, Palotie A, Behrens TW, Magnusson OT, Kong A, Thorsteinsdottir U et al. (2012)
A mutation in APP protects against Alzheimer's disease and age-related cognitive decline
Nature, 488 (7409), 96-9
PubMed 22801501

Jonsson T, Stefansson H, Steinberg S, Jonsdottir I, Jonsson PV, Snaedal J, Bjornsson S, Huttenlocher J, Levey AI, Lah JJ, Rujescu D, Hampel H, Giegling I, Andreassen OA, Engedal K, Ulstein I, Djurovic S, Ibrahim-Verbaas C, Hofman A, Ikram MA, van Duijn CM, Thorsteinsdottir U, Kong A, Stefansson K (2012)
Variant of TREM2 associated with the risk of Alzheimer's disease
N Engl J Med, 368 (2), 107-16
PubMed 23150908

Jönsson EG, Saetre P, Nyholm H, Djurovic S, Melle I, Andreassen OA, Skjødt C, Thygesen JH, Werge T, Hall H, Agartz I, Terenius L (2012)
Lack of association between the regulator of G-protein signaling 4 (RGS4) rs951436 polymorphism and schizophrenia
Psychiatr Genet, 22 (5), 263-4
PubMed 22157635

Kähler AK, Rimol LM, Brown AA, Djurovic S, Hartberg CB, Melle I, Dale AM, Andreassen OA, Agartz I (2012)
Effect of DISC1 SNPs on brain structure in healthy controls and patients with a history of psychosis
Am J Med Genet B Neuropsychiatr Genet, 159B (6), 722-30
PubMed 22815203

Langeveld J, Andreassen OA, Auestad B, Færden A, Hauge LJ, Joa I, Johannessen JO, Melle I, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Larsen TK (2012)
Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?
Scand J Psychol, 54 (2), 160-5
PubMed 23252448

Larsson S, Andreassen OA, Aas M, Røssberg JI, Mork E, Steen NE, Barrett EA, Lagerberg TV, Peleikis D, Agartz I, Melle I, Lorentzen S (2012)
High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder
Compr Psychiatry, 54 (2), 123-7
PubMed 22901835

Lindholm Carlström E, Saetre P, Rosengren A, Thygesen JH, Djurovic S, Melle I, Andreassen OA, Werge T, Agartz I, Hall H, Terenius L, Jönsson EG (2012)
Association between a genetic variant in the serotonin transporter gene (SLC6A4) and suicidal behavior in patients with schizophrenia
Behav Brain Funct, 8, 24
PubMed 22594806

Mattingsdal M, Brown AA, Djurovic S, Sønderby IE, Server A, Melle I, Agartz I, Hovig E, Jensen J, Andreassen OA (2012)
Pathway analysis of genetic markers associated with a functional MRI faces paradigm implicates polymorphisms in calcium responsive pathways
Neuroimage, 70, 143-9
PubMed 23274185

Mork E, Mehlum L, Barrett EA, Agartz I, Harkavy-Friedman JM, Lorentzen S, Melle I, Andreassen OA, Walby FA (2012)
Self-harm in patients with schizophrenia spectrum disorders
Arch Suicide Res, 16 (2), 111-23
PubMed 22551042

Ousdal OT, Anand Brown A, Jensen J, Nakstad PH, Melle I, Agartz I, Djurovic S, Bogdan R, Hariri AR, Andreassen OA (2012)
Associations between variants near a monoaminergic pathways gene (PHOX2B) and amygdala reactivity: a genome-wide functional imaging study
Twin Res Hum Genet, 15 (3), 273-85
PubMed 22856363

Ousdal OT, Reckless GE, Server A, Andreassen OA, Jensen J (2012)
Effect of relevance on amygdala activation and association with the ventral striatum
Neuroimage, 62 (1), 95-101
PubMed 22546319

Peleikis DE, Varga M, Sundet K, Lorentzen S, Agartz I, Andreassen OA (2012)
Schizophrenia patients with and without post-traumatic stress disorder (PTSD) have different mood symptom levels but same cognitive functioning
Acta Psychiatr Scand, 127 (6), 455-63
PubMed 23176609

Rimol LM, Nesvåg R, Hagler DJ, Bergmann O, Fennema-Notestine C, Hartberg CB, Haukvik UK, Lange E, Pung CJ, Server A, Melle I, Andreassen OA, Agartz I, Dale AM (2012)
Cortical volume, surface area, and thickness in schizophrenia and bipolar disorder
Biol Psychiatry, 71 (6), 552-60
PubMed 22281121

Ringen PA, Melle I, Berg AO, Agartz I, Spigset O, Simonsen C, Sundet K, Andreassen OA (2012)
Cannabis use and premorbid functioning as predictors of poorer neurocognition in schizophrenia spectrum disorder
Schizophr Res, 143 (1), 84-9
PubMed 23178107

Saetre P, Grove J, Børglum AD, Mors O, Werge T, Andreassen OA, Vares M, Agartz I, Terenius L, Jönsson EG (2012)
Methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and age at onset of schizophrenia: no consistent evidence for an association in the Nordic population
Am J Med Genet B Neuropsychiatr Genet, 159B (8), 981-6
PubMed 23076983

Stein JL, Medland SE, Vasquez AA, Hibar DP, Senstad RE, Winkler AM, Toro R, Appel K, Bartecek R, Bergmann Ø, Bernard M, Brown AA, Cannon DM, Chakravarty MM, Christoforou A, Domin M, Grimm O, Hollinshead M, Holmes AJ, Homuth G, Hottenga JJ, Langan C, Lopez LM, Hansell NK, Hwang KS et al. (2012)
Identification of common variants associated with human hippocampal and intracranial volumes
Nat Genet, 44 (5), 552-61
PubMed 22504417

Steinberg S, de Jong S, Mattheisen M, Costas J, Demontis D, Jamain S, Pietiläinen OP, Lin K, Papiol S, Huttenlocher J, Sigurdsson E, Vassos E, Giegling I, Breuer R, Fraser G, Walker N, Melle I, Djurovic S, Agartz I, Tuulio-Henriksson A, Suvisaari J, Lönnqvist J, Paunio T, Olsen L, Hansen T et al. (2012)
Common variant at 16p11.2 conferring risk of psychosis
Mol Psychiatry, 19 (1), 108-14
PubMed 23164818

Tandberg M, Sundet K, Andreassen OA, Melle I, Ueland T (2012)
Occupational functioning, symptoms and neurocognition in patients with psychotic disorders: investigating subgroups based on social security status
Soc Psychiatry Psychiatr Epidemiol, 48 (6), 863-74
PubMed 23064396

Tandberg M, Ueland T, Andreassen OA, Sundet K, Melle I (2012)
Factors associated with occupational and academic status in patients with first-episode psychosis with a particular focus on neurocognition
Soc Psychiatry Psychiatr Epidemiol, 47 (11), 1763-73
PubMed 22310699

Vassos E, Steinberg S, Cichon S, Breen G, Sigurdsson E, Andreassen OA, Djurovic S, Morken G, Grigoroiu-Serbanescu M, Diaconu CC, Czerski PM, Hauser J, Babadjanova G, Abramova LI, Mühleisen TW, Nöthen MM, Rietschel M, McGuffin P, St Clair D, Gustafsson O, Melle I, Pietiläinen OP, Ruggeri M, Tosato S, Werge T et al. (2012)
Replication study and meta-analysis in European samples supports association of the 3p21.1 locus with bipolar disorder
Biol Psychiatry, 72 (8), 645-50
PubMed 22560537

Wirgenes KV, Sønderby IE, Haukvik UK, Mattingsdal M, Tesli M, Athanasiu L, Sundet K, Røssberg JI, Dale AM, Brown AA, Agartz I, Melle I, Djurovic S, Andreassen OA (2012)
TCF4 sequence variants and mRNA levels are associated with neurodevelopmental characteristics in psychotic disorders
Transl Psychiatry, 2, e112
PubMed 22832956

Aas M, Steen NE, Agartz I, Aminoff SR, Lorentzen S, Sundet K, Andreassen OA, Melle I (2012)
Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?
Psychiatry Res, 198 (3), 495-500
PubMed 22472845

Publications 2011

Agartz I, Brown AA, Rimol LM, Hartberg CB, Dale AM, Melle I, Djurovic S, Andreassen OA (2011)
Common sequence variants in the major histocompatibility complex region associate with cerebral ventricular size in schizophrenia
Biol Psychiatry, 70 (7), 696-8
PubMed 21514568

Andreou D, Saetre P, Kähler AK, Werge T, Andreassen OA, Agartz I, Sedvall GC, Hall H, Terenius L, Jönsson EG (2011)
Dystrobrevin-binding protein 1 gene (DTNBP1) variants associated with cerebrospinal fluid homovanillic acid and 5-hydroxyindoleacetic acid concentrations in healthy volunteers
Eur Neuropsychopharmacol, 21 (9), 700-4
PubMed 21295953

Bakken TE, Bloss CS, Roddey JC, Joyner AH, Rimol LM, Djurovic S, Melle I, Sundet K, Agartz I, Andreassen OA, Dale AM, Schork NJ (2011)
Association of genetic variants on 15q12 with cortical thickness and cognition in schizophrenia
Arch Gen Psychiatry, 68 (8), 781-90
PubMed 21810643

Berg AO, Melle I, Rossberg JI, Romm KL, Larsson S, Lagerberg TV, Andreassen OA, Hauff E (2011)
Perceived discrimination is associated with severity of positive and depression/anxiety symptoms in immigrants with psychosis: a cross-sectional study
BMC Psychiatry, 11, 77
PubMed 21548949

Bolstad A, Andreassen OA, Røssberg JI, Agartz I, Melle I, Tanum L (2011)
Previous hospital admissions and disease severity predict the use of antipsychotic combination treatment in patients with schizophrenia
BMC Psychiatry, 11, 126
PubMed 21812996

Caprini S, Saetre P, Melle I, Djurovic S, Andreassen OA, Skjødt C, Duong L, Werge T, Hall H, Agartz I, Terenius L, Jönsson EG (2011)
Lack of association between two dopamine D2 receptor gene polymorphisms and schizophrenia
Psychiatr Genet, 21 (4), 214-5
PubMed 21712758

Elvsåshagen T, Moberget T, Bøen E, Boye B, Englin NO, Pedersen PØ, Andreassen OA, Dietrichs E, Malt UF, Andersson S (2011)
Evidence for impaired neocortical synaptic plasticity in bipolar II disorder
Biol Psychiatry, 71 (1), 68-74
PubMed 22036034

Elvsåshagen T, Vera E, Bøen E, Bratlie J, Andreassen OA, Josefsen D, Malt UF, Blasco MA, Boye B (2011)
The load of short telomeres is increased and associated with lifetime number of depressive episodes in bipolar II disorder
J Affect Disord, 135 (1-3), 43-50
PubMed 21880373

Engh JA, Sundet K, Simonsen C, Vaskinn A, Lagerberg TV, Opjordsmoen S, Friis S, Andreassen OA (2011)
Verbal learning contributes to cognitive insight in schizophrenia independently of affective and psychotic symptoms
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1059-63
PubMed 21392553

Hansen T, Ingason A, Djurovic S, Melle I, Fenger M, Gustafsson O, Jakobsen KD, Rasmussen HB, Tosato S, Rietschel M, Frank J, Owen M, Bonetto C, Suvisaari J, Thygesen JH, Pétursson H, Lönnqvist J, Sigurdsson E, Giegling I, Craddock N, O'Donovan MC, Ruggeri M, Cichon S, Ophoff RA, Pietiläinen O et al. (2011)
At-risk variant in TCF7L2 for type II diabetes increases risk of schizophrenia
Biol Psychiatry, 70 (1), 59-63
PubMed 21414605

Hartberg CB, Sundet K, Rimol LM, Haukvik UK, Lange EH, Nesvåg R, Dale AM, Melle I, Andreassen OA, Agartz I (2011)
Brain cortical thickness and surface area correlates of neurocognitive performance in patients with schizophrenia, bipolar disorder, and healthy adults
J Int Neuropsychol Soc, 17 (6), 1080-93
PubMed 22013998

Hartberg CB, Sundet K, Rimol LM, Haukvik UK, Lange EH, Nesvåg R, Melle I, Andreassen OA, Agartz I (2011)
Subcortical brain volumes relate to neurocognition in schizophrenia and bipolar disorder and healthy controls
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1122-30
PubMed 21457744

Haug E, Melle I, Andreassen OA, Raballo A, Bratlien U, Øie M, Lien L, Møller P (2011)
The association between anomalous self-experience and suicidality in first-episode schizophrenia seems mediated by depression
Compr Psychiatry, 53 (5), 456-60
PubMed 21871617

Haug E, Øie M, Melle I, Andreassen OA, Raballo A, Bratlien U, Lien L, Møller P (2011)
The association between self-disorders and neurocognitive dysfunction in schizophrenia
Schizophr Res, 135 (1-3), 79-83
PubMed 22137461

Hope S, Dieset I, Agartz I, Steen NE, Ueland T, Melle I, Aukrust P, Andreassen OA (2011)
Affective symptoms are associated with markers of inflammation and immune activation in bipolar disorders but not in schizophrenia
J Psychiatr Res, 45 (12), 1608-16
PubMed 21889167

Humphreys K, Grankvist A, Leu M, Hall P, Liu J, Ripatti S, Rehnström K, Groop L, Klareskog L, Ding B, Grönberg H, Xu J, Pedersen NL, Lichtenstein P, Mattingsdal M, Andreassen OA, O'Dushlaine C, Purcell SM, Sklar P, Sullivan PF, Hultman CM, Palmgren J, Magnusson PK (2011)
The genetic structure of the Swedish population
PLoS One, 6 (8), e22547
PubMed 21829632

Håvik B, Le Hellard S, Rietschel M, Lybæk H, Djurovic S, Mattheisen M, Mühleisen TW, Degenhardt F, Priebe L, Maier W, Breuer R, Schulze TG, Agartz I, Melle I, Hansen T, Bramham CR, Nöthen MM, Stevens B, Werge T, Andreassen OA, Cichon S, Steen VM (2011)
The complement control-related genes CSMD1 and CSMD2 associate to schizophrenia
Biol Psychiatry, 70 (1), 35-42
PubMed 21439553

Ingason A, Kirov G, Giegling I, Hansen T, Isles AR, Jakobsen KD, Kristinsson KT, le Roux L, Gustafsson O, Craddock N, Möller HJ, McQuillin A, Muglia P, Cichon S, Rietschel M, Ophoff RA, Djurovic S, Andreassen OA, Pietiläinen OP, Peltonen L, Dempster E, Collier DA, St Clair D, Rasmussen HB, Glenthøj BY et al. (2011)
Maternally derived microduplications at 15q11-q13: implication of imprinted genes in psychotic illness
Am J Psychiatry, 168 (4), 408-17
PubMed 21324950

Johansen R, Hestad K, Iversen VC, Agartz I, Sundet K, Andreassen OA, Melle I (2011)
Cognitive and clinical factors are associated with service engagement in early-phase schizophrenia spectrum disorders
J Nerv Ment Dis, 199 (3), 176-82
PubMed 21346488

Koefoed P, Andreassen OA, Bennike B, Dam H, Djurovic S, Hansen T, Jorgensen MB, Kessing LV, Melle I, Møller GL, Mors O, Werge T, Mellerup E (2011)
Combinations of SNPs related to signal transduction in bipolar disorder
PLoS One, 6 (8), e23812
PubMed 21897858

Lagerberg TV, Sundet K, Aminoff SR, Berg AO, Ringen PA, Andreassen OA, Melle I (2011)
Excessive cannabis use is associated with earlier age at onset in bipolar disorder
Eur Arch Psychiatry Clin Neurosci, 261 (6), 397-405
PubMed 21267743

LeBlanc M, Kulle B, Sundet K, Agartz I, Melle I, Djurovic S, Frigessi A, Andreassen OA (2011)
Genome-wide study identifies PTPRO and WDR72 and FOXQ1-SUMO1P1 interaction associated with neurocognitive function
J Psychiatr Res, 46 (2), 271-8
PubMed 22126837

Olsen L, Hansen T, Djurovic S, Haastrup E, Albrecthsen A, Hoeffding LK, Secher A, Gustafsson O, Jakobsen KD, Nielsen FC, Ullum H, Morken G, Agartz I, Melle I, Gether U, Andreassen OA, Werge T (2011)
Copy number variations in affective disorders and meta-analysis
Psychiatr Genet, 21 (6), 319-22
PubMed 21451435

Pers TH, Hansen NT, Lage K, Koefoed P, Dworzynski P, Miller ML, Flint TJ, Mellerup E, Dam H, Andreassen OA, Djurovic S, Melle I, Børglum AD, Werge T, Purcell S, Ferreira MA, Kouskoumvekaki I, Workman CT, Hansen T, Mors O, Brunak S (2011)
Meta-analysis of heterogeneous data sources for genome-scale identification of risk genes in complex phenotypes
Genet Epidemiol, 35 (5), 318-32
PubMed 21484861

Romm KL, Melle I, Thoresen C, Andreassen OA, Rossberg JI (2011)
Severe social anxiety in early psychosis is associated with poor premorbid functioning, depression, and reduced quality of life
Compr Psychiatry, 53 (5), 434-40
PubMed 21821242

Romm KL, Rossberg JI, Hansen CF, Haug E, Andreassen OA, Melle I (2011)
Self-esteem is associated with premorbid adjustment and positive psychotic symptoms in early psychosis
BMC Psychiatry, 11, 136
PubMed 21854599

Saetre P, Vares M, Werge T, Andreassen OA, Arinami T, Ishiguro H, Nanko S, Tan EC, Han DH, Roffman JL, Muntjewerff JW, Jagodzinski PP, Kempisty B, Hauser J, Vilella E, Betcheva E, Nakamura Y, Regland B, Agartz I, Hall H, Terenius L, Jönsson EG (2011)
Methylenetetrahydrofolate reductase (MTHFR) C677T and A1298C polymorphisms and age of onset in schizophrenia: a combined analysis of independent samples
Am J Med Genet B Neuropsychiatr Genet, 156 (2), 215-24
PubMed 21302350

Schoeyen HK, Vaaler AE, Auestad BH, Malt UF, Melle I, Andreassen OA, Morken G (2011)
Despite clinical differences, bipolar disorder patients from acute wards and outpatient clinics have similar educational and disability levels compared to the general population
J Affect Disord, 132 (1-2), 209-15
PubMed 21440307

Steen NE, Lorentzen S, Barrett EA, Lagerberg TV, Hope S, Larsson S, Berg AO, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Sex-specific cortisol levels in bipolar disorder and schizophrenia during mental challenge--relationship to clinical characteristics and medication
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1100-7
PubMed 21420462

Steen NE, Methlie P, Lorentzen S, Hope S, Barrett EA, Larsson S, Mork E, Almås B, Løvås K, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Increased systemic cortisol metabolism in patients with schizophrenia and bipolar disorder: a mechanism for increased stress vulnerability?
J Clin Psychiatry, 72 (11), 1515-21
PubMed 21367348

Steinberg S, de Jong S, Irish Schizophrenia Genomics Consortium, Andreassen OA, Werge T, Børglum AD, Mors O, Mortensen PB, Gustafsson O, Costas J, Pietiläinen OP, Demontis D, Papiol S, Huttenlocher J, Mattheisen M, Breuer R, Vassos E, Giegling I, Fraser G, Walker N, Tuulio-Henriksson A, Suvisaari J, Lönnqvist J, Paunio T, Agartz I et al. (2011)
Common variants at VRK2 and TCF4 conferring risk of schizophrenia
Hum Mol Genet, 20 (20), 4076-81
PubMed 21791550

Sulem P, Gudbjartsson DF, Walters GB, Helgadottir HT, Helgason A, Gudjonsson SA, Zanon C, Besenbacher S, Bjornsdottir G, Magnusson OT, Magnusson G, Hjartarson E, Saemundsdottir J, Gylfason A, Jonasdottir A, Holm H, Karason A, Rafnar T, Stefansson H, Andreassen OA, Pedersen JH, Pack AI, de Visser MC, Kiemeney LA, Geirsson AJ et al. (2011)
Identification of low-frequency variants associated with gout and serum uric acid levels
Nat Genet, 43 (11), 1127-30
PubMed 21983786

Tesli M, Koefoed P, Athanasiu L, Mattingsdal M, Gustafsson O, Agartz I, Rimol LM, Brown A, Wirgenes KV, Smorr LL, Kähler AK, Werge T, Mors O, Mellerup E, Jönsson EG, Melle I, Morken G, Djurovic S, Andreassen OA (2011)
Association analysis of ANK3 gene variants in nordic bipolar disorder and schizophrenia case-control samples
Am J Med Genet B Neuropsychiatr Genet, 156B (8), 969-74
PubMed 21972176

Thoresen C, Jensen J, Sigvartsen NP, Bolstad I, Server A, Nakstad PH, Andreassen OA, Endestad T (2011)
Arousal Modulates Activity in the Medial Temporal Lobe during a Short-Term Relational Memory Task
Front Hum Neurosci, 5, 177
PubMed 22291626

Thormodsen R, Jensen J, Holmèn A, Juuhl-Langseth M, Emblem KE, Andreassen OA, Rund BR (2011)
Prefrontal hyperactivation during a working memory task in early-onset schizophrenia spectrum disorders: an fMRI study
Psychiatry Res, 194 (3), 257-62
PubMed 22079661

Van Schijndel JE, Van Zweeden M, Van Loo KM, Djurovic S, Andreassen OA, Hansen T, Werge T, Nyegaard M, Sørensen KM, Nordentoft M, Mortensen PB, Mors O, Børglum AD, Del-Favero J, Norrback KF, Adolfsson R, De Hert M, Claes S, Cichon S, Rietschel M, Nöthen MM, Kallunki P, Pedersen JT, Martens GJ (2011)
Dual association of a TRKA polymorphism with schizophrenia
Psychiatr Genet, 21 (3), 125-31
PubMed 21317683

Vaskinn A, Sundet K, Simonsen C, Hellvin T, Melle I, Andreassen OA (2011)
Sex differences in neuropsychological performance and social functioning in schizophrenia and bipolar disorder
Neuropsychology, 25 (4), 499-510
PubMed 21463042

Wegener G, Andreassen OA (2011)
Acta Neuropsychiatrica and Scandinavian College of Neuropsychopharmacology (SCNP)
Acta Neuropsychiatr, 23 (5), 199-200
PubMed 28183387

Aas M, Djurovic S, Athanasiu L, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2011)
Serotonin transporter gene polymorphism, childhood trauma, and cognition in patients with psychotic disorders
Schizophr Bull, 38 (1), 15-22
PubMed 21908796

Publications 2010

Aminoff SR, Jensen J, Lagerberg TV, Andreassen OA, Melle I (2010)
Decreased self-reported arousal in schizophrenia during aversive picture viewing compared to bipolar disorder and healthy controls
Psychiatry Res, 185 (3), 309-14
PubMed 20724003

Andreou D, Saetre P, Werge T, Andreassen OA, Agartz I, Sedvall GC, Hall H, Terenius L, Jönsson EG (2010)
Tryptophan hydroxylase gene 1 (TPH1) variants associated with cerebrospinal fluid 5-hydroxyindole acetic acid and homovanillic acid concentrations in healthy volunteers
Psychiatry Res, 180 (2-3), 63-7
PubMed 20580984

Athanasiu L, Mattingsdal M, Kähler AK, Brown A, Gustafsson O, Agartz I, Giegling I, Muglia P, Cichon S, Rietschel M, Pietiläinen OP, Peltonen L, Bramon E, Collier D, Clair DS, Sigurdsson E, Petursson H, Rujescu D, Melle I, Steen VM, Djurovic S, Andreassen OA (2010)
Gene variants associated with schizophrenia in a Norwegian genome-wide study are replicated in a large European cohort
J Psychiatr Res, 44 (12), 748-53
PubMed 20185149

Athanasiu L, Mattingsdal M, Melle I, Inderhaug E, Lien T, Agartz I, Lorentzen S, Morken G, Andreassen OA, Djurovic S (2010)
Intron 12 in NTRK3 is associated with bipolar disorder
Psychiatry Res, 185 (3), 358-62
PubMed 20554328

Barrett EA, Sundet K, Faerden A, Agartz I, Bratlien U, Romm KL, Mork E, Rossberg JI, Steen NE, Andreassen OA, Melle I (2010)
Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis
Schizophr Res, 123 (2-3), 257-62
PubMed 20685083

Barrett EA, Sundet K, Faerden A, Nesvåg R, Agartz I, Fosse R, Mork E, Steen NE, Andreassen OA, Melle I (2010)
Suicidality before and in the early phases of first episode psychosis
Schizophr Res, 119 (1-3), 11-7
PubMed 20399077

Barrett EA, Sundet K, Simonsen C, Agartz I, Lorentzen S, Mehlum L, Mork E, Andreassen OA, Melle I (2010)
Neurocognitive functioning and suicidality in schizophrenia spectrum disorders
Compr Psychiatry, 52 (2), 156-63
PubMed 21295222

Berg AO, Melle I, Torjesen PA, Lien L, Hauff E, Andreassen OA (2010)
A cross-sectional study of vitamin D deficiency among immigrants and Norwegians with psychosis compared to the general population
J Clin Psychiatry, 71 (12), 1598-604
PubMed 20441728

Chen X, Lee G, Maher BS, Fanous AH, Chen J, Zhao Z, Guo A, van den Oord E, Sullivan PF, Shi J, Levinson DF, Gejman PV, Sanders A, Duan J, Owen MJ, Craddock NJ, O'Donovan MC, Blackman J, Lewis D, Kirov GK, Qin W, Schwab S, Wildenauer D, Chowdari K, Nimgaonkar V et al. (2010)
GWA study data mining and independent replication identify cardiomyopathy-associated 5 (CMYA5) as a risk gene for schizophrenia
Mol Psychiatry, 16 (11), 1117-29
PubMed 20838396

Djurovic S, Gustafsson O, Mattingsdal M, Athanasiu L, Bjella T, Tesli M, Agartz I, Lorentzen S, Melle I, Morken G, Andreassen OA (2010)
A genome-wide association study of bipolar disorder in Norwegian individuals, followed by replication in Icelandic sample
J Affect Disord, 126 (1-2), 312-6
PubMed 20451256

Faerden A, Finset A, Friis S, Agartz I, Barrett EA, Nesvåg R, Andreassen OA, Marder SR, Melle I (2010)
Apathy in first episode psychosis patients: one year follow up
Schizophr Res, 116 (1), 20-6
PubMed 19948392

Hartberg CB, Lawyer G, Nyman H, Jönsson EG, Haukvik UK, Saetre P, Bjerkan PS, Andreassen OA, Hall H, Agartz I (2010)
Investigating relationships between cortical thickness and cognitive performance in patients with schizophrenia and healthy adults
Psychiatry Res, 182 (2), 123-33
PubMed 20456929

Haukvik UK, Saetre P, McNeil T, Bjerkan PS, Andreassen OA, Werge T, Jönsson EG, Agartz I (2010)
An exploratory model for G x E interaction on hippocampal volume in schizophrenia; obstetric complications and hypoxia-related genes
Prog Neuropsychopharmacol Biol Psychiatry, 34 (7), 1259-65
PubMed 20638435

Hellvin T, Sundet K, Vaskinn A, Simonsen C, Ueland T, Andreassen OA, Melle I (2010)
Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder
Scand J Psychol, 51 (6), 525-33
PubMed 20642739

Holtze M, Saetre P, Erhardt S, Schwieler L, Werge T, Hansen T, Nielsen J, Djurovic S, Melle I, Andreassen OA, Hall H, Terenius L, Agartz I, Engberg G, Jönsson EG, Schalling M (2010)
Kynurenine 3-monooxygenase (KMO) polymorphisms in schizophrenia: an association study
Schizophr Res, 127 (1-3), 270-2
PubMed 21030213

Hope S, Melle I, Aukrust P, Agartz I, Lorentzen S, Steen NE, Djurovic S, Ueland T, Andreassen OA (2010)
Osteoprotegerin levels in patients with severe mental disorders
J Psychiatry Neurosci, 35 (5), 304-10
PubMed 20569643

Haatveit BC, Sundet K, Hugdahl K, Ueland T, Melle I, Andreassen OA (2010)
The validity of d prime as a working memory index: results from the "Bergen n-back task"
J Clin Exp Neuropsychol, 32 (8), 871-80
PubMed 20383801

Ingason A, Giegling I, Cichon S, Hansen T, Rasmussen HB, Nielsen J, Jürgens G, Muglia P, Hartmann AM, Strengman E, Vasilescu C, Mühleisen TW, Djurovic S, Melle I, Lerer B, Möller HJ, Francks C, Pietiläinen OP, Lonnqvist J, Suvisaari J, Tuulio-Henriksson A, Walshe M, Vassos E, Di Forti M, Murray R et al. (2010)
A large replication study and meta-analysis in European samples provides further support for association of AHI1 markers with schizophrenia
Hum Mol Genet, 19 (7), 1379-86
PubMed 20071346

Jónsdóttir H, Opjordsmoen S, Birkenaes AB, Engh JA, Ringen PA, Vaskinn A, Aamo TO, Friis S, Andreassen OA (2010)
Medication adherence in outpatients with severe mental disorders: relation between self-reports and serum level
J Clin Psychopharmacol, 30 (2), 169-75
PubMed 20520290

Kessler U, Vaaler AE, Schøyen H, Oedegaard KJ, Bergsholm P, Andreassen OA, Malt UF, Morken G (2010)
The study protocol of the Norwegian randomized controlled trial of electroconvulsive therapy in treatment resistant depression in bipolar disorder
BMC Psychiatry, 10, 16
PubMed 20178636

Kähler AK, Djurovic S, Rimol LM, Brown AA, Athanasiu L, Jönsson EG, Hansen T, Gústafsson O, Hall H, Giegling I, Muglia P, Cichon S, Rietschel M, Pietiläinen OP, Peltonen L, Bramon E, Collier D, St Clair D, Sigurdsson E, Petursson H, Rujescu D, Melle I, Werge T, Steen VM, Dale AM et al. (2010)
Candidate gene analysis of the human natural killer-1 carbohydrate pathway and perineuronal nets in schizophrenia: B3GAT2 is associated with disease risk and cortical surface area
Biol Psychiatry, 69 (1), 90-6
PubMed 20950796

Kähler AK, Otnaess MK, Wirgenes KV, Hansen T, Jönsson EG, Agartz I, Hall H, Werge T, Morken G, Mors O, Mellerup E, Dam H, Koefod P, Melle I, Steen VM, Andreassen OA, Djurovic S (2010)
Association study of PDE4B gene variants in Scandinavian schizophrenia and bipolar disorder multicenter case-control samples
Am J Med Genet B Neuropsychiatr Genet, 153B (1), 86-96
PubMed 19350560

Lagerberg TV, Andreassen OA, Ringen PA, Berg AO, Larsson S, Agartz I, Sundet K, Melle I (2010)
Excessive substance use in bipolar disorder is associated with impaired functioning rather than clinical characteristics, a descriptive study
BMC Psychiatry, 10, 9
PubMed 20105311

Lagerberg TV, Larsson S, Sundet K, Hansen CB, Hellvin T, Andreassen OA, Melle I (2010)
Treatment delay and excessive substance use in bipolar disorder
J Nerv Ment Dis, 198 (9), 628-33
PubMed 20823723

Maïza O, Mazoyer B, Hervé PY, Razafimandimby A, Dollfus S, Tzourio-Mazoyer N, Andreassen OA (2010)
Impact of cognitive performance on the reproducibility of fMRI activation in schizophrenia
J Psychiatry Neurosci, 35 (6), 378-89
PubMed 20731962

Nesvåg R, Lange EH, Faerden A, Barrett EA, Emilsson B, Ringen PA, Andreassen OA, Melle I, Agartz I (2010)
The use of screening instruments for detecting alcohol and other drug use disorders in first-episode psychosis
Psychiatry Res, 177 (1-2), 228-34
PubMed 20178887

Rimol LM, Hartberg CB, Nesvåg R, Fennema-Notestine C, Hagler DJ, Pung CJ, Jennings RG, Haukvik UK, Lange E, Nakstad PH, Melle I, Andreassen OA, Dale AM, Agartz I (2010)
Cortical thickness and subcortical volumes in schizophrenia and bipolar disorder
Biol Psychiatry, 68 (1), 41-50
PubMed 20609836

Romm KL, Rossberg JI, Berg AO, Barrett EA, Faerden A, Agartz I, Andreassen OA, Melle I (2010)
Depression and depressive symptoms in first episode psychosis
J Nerv Ment Dis, 198 (1), 67-71
PubMed 20061872

Romm KL, Rossberg JI, Berg AO, Hansen CF, Andreassen OA, Melle I (2010)
Assessment of social anxiety in first episode psychosis using the Liebowitz Social Anxiety scale as a self-report measure
Eur Psychiatry, 26 (2), 115-21
PubMed 21036553

Saetre P, Lundmark P, Wang A, Hansen T, Rasmussen HB, Djurovic S, Melle I, Andreassen OA, Werge T, Agartz I, Hall H, Terenius L, Jönsson EG (2010)
The tryptophan hydroxylase 1 (TPH1) gene, schizophrenia susceptibility, and suicidal behavior: a multi-centre case-control study and meta-analysis
Am J Med Genet B Neuropsychiatr Genet, 153B (2), 387-396
PubMed 19526457

Schoeyen HK, Birkenaes AB, Vaaler AE, Auestad BH, Malt UF, Andreassen OA, Morken G (2010)
Bipolar disorder patients have similar levels of education but lower socio-economic status than the general population
J Affect Disord, 129 (1-3), 68-74
PubMed 20832866

Simonsen C, Sundet K, Vaskinn A, Ueland T, Romm KL, Hellvin T, Melle I, Friis S, Andreassen OA (2010)
Psychosocial function in schizophrenia and bipolar disorder: Relationship to neurocognition and clinical symptoms
J Int Neuropsychol Soc, 16 (5), 771-83
PubMed 20509984

Steen NE, Tesli M, Kähler AK, Methlie P, Hope S, Barrett EA, Larsson S, Mork E, Løvås K, Røssberg JI, Agartz I, Melle I, Djurovic S, Lorentzen S, Berg JP, Andreassen OA (2010)
SRD5A2 is associated with increased cortisol metabolism in schizophrenia spectrum disorders
Prog Neuropsychopharmacol Biol Psychiatry, 34 (8), 1500-6
PubMed 20800085

Steinberg S, Mors O, Børglum AD, Gustafsson O, Werge T, Mortensen PB, Andreassen OA, Sigurdsson E, Thorgeirsson TE, Böttcher Y, Olason P, Ophoff RA, Cichon S, Gudjonsdottir IH, Pietiläinen OP, Nyegaard M, Tuulio-Henriksson A, Ingason A, Hansen T, Athanasiu L, Suvisaari J, Lonnqvist J, Paunio T, Hartmann A, Jürgens G et al. (2010)
Expanding the range of ZNF804A variants conferring risk of psychosis
Mol Psychiatry, 16 (1), 59-66
PubMed 20048749

Tesli M, Athanasiu L, Mattingsdal M, Kähler AK, Gustafsson O, Andreassen BK, Werge T, Hansen T, Mors O, Mellerup E, Koefoed P, Jönsson EG, Agartz I, Melle I, Morken G, Djurovic S, Andreassen OA (2010)
Association analysis of PALB2 and BRCA2 in bipolar disorder and schizophrenia in a scandinavian case-control sample
Am J Med Genet B Neuropsychiatr Genet, 153B (7), 1276-82
PubMed 20872766

Vares M, Saetre P, Deng H, Cai G, Liu X, Hansen T, Rasmussen HB, Werge T, Melle I, Djurovic S, Andreassen OA, Agartz I, Hall H, Terenius L, Jönsson EG (2010)
Association between methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and age of onset in schizophrenia
Am J Med Genet B Neuropsychiatr Genet, 153B (2), 610-618
PubMed 19746410

Wirgenes KV, Djurovic S, Sundet K, Agartz I, Mattingsdal M, Athanasiu L, Melle I, Andreassen OA (2010)
Catechol O-methyltransferase variants and cognitive performance in schizophrenia and bipolar disorder versus controls
Schizophr Res, 122 (1-3), 31-7
PubMed 20605701

Publications 2009

Andreou D, Saetre P, Lundmark P, Hansen T, Timm S, Melle I, Djurovic S, Andreassen OA, Werge T, Hall H, Agartz I, Terenius L, Jönsson EG (2009)
Tyrosine hydroxylase Val81Met polymorphism: lack of association with schizophrenia
Psychiatr Genet, 19 (5), 273-4
PubMed 19491717

Birkenaes AB, Birkeland KI, Friis S, Opjordsmoen S, Andreassen OA (2009)
Hormonal markers of metabolic dysregulation in patients with severe mental disorders after olanzapine treatment under real-life conditions
J Clin Psychopharmacol, 29 (2), 109-16
PubMed 19512971

Djurovic S, Le Hellard S, Kähler AK, Jönsson EG, Agartz I, Steen VM, Hall H, Wang AG, Rasmussen HB, Melle I, Werge T, Andreassen OA (2009)
Association of MCTP2 gene variants with schizophrenia in three independent samples of Scandinavian origin (SCOPE)
Psychiatry Res, 168 (3), 256-8
PubMed 19223264

Engh JA, Friis S, Birkenaes AB, Jónsdóttir H, Klungsøyr O, Ringen PA, Simonsen C, Vaskinn A, Opjordsmoen S, Andreassen OA (2009)
Delusions are associated with poor cognitive insight in schizophrenia
Schizophr Bull, 36 (4), 830-5
PubMed 19176474

Faerden A, Vaskinn A, Finset A, Agartz I, Ann Barrett E, Friis S, Simonsen C, Andreassen OA, Melle I (2009)
Apathy is associated with executive functioning in first episode psychosis
BMC Psychiatry, 9, 1
PubMed 19133132

Hope S, Melle I, Aukrust P, Steen NE, Birkenaes AB, Lorentzen S, Agartz I, Ueland T, Andreassen OA (2009)
Similar immune profile in bipolar disorder and schizophrenia: selective increase in soluble tumor necrosis factor receptor I and von Willebrand factor
Bipolar Disord, 11 (7), 726-34
PubMed 19839997

Ingason A, Rujescu D, Cichon S, Sigurdsson E, Sigmundsson T, Pietiläinen OP, Buizer-Voskamp JE, Strengman E, Francks C, Muglia P, Gylfason A, Gustafsson O, Olason PI, Steinberg S, Hansen T, Jakobsen KD, Rasmussen HB, Giegling I, Möller HJ, Hartmann A, Crombie C, Fraser G, Walker N, Lonnqvist J, Suvisaari J et al. (2009)
Copy number variations of chromosome 16p13.1 region associated with schizophrenia
Mol Psychiatry, 16 (1), 17-25
PubMed 19786961

Joyner AH, J CR, Bloss CS, Bakken TE, Rimol LM, Melle I, Agartz I, Djurovic S, Topol EJ, Schork NJ, Andreassen OA, Dale AM (2009)
A common MECP2 haplotype associates with reduced cortical surface area in humans in two independent populations
Proc Natl Acad Sci U S A, 106 (36), 15483-8
PubMed 19717458

Jönsson EG, Saetre P, Vares M, Andreou D, Larsson K, Timm S, Rasmussen HB, Djurovic S, Melle I, Andreassen OA, Agartz I, Werge T, Hall H, Terenius L (2009)
DTNBP1, NRG1, DAOA, DAO and GRM3 polymorphisms and schizophrenia: an association study
Neuropsychobiology, 59 (3), 142-50
PubMed 19439994

Larsson S, Lorentzen S, Mork E, Barrett EA, Steen NE, Lagerberg TV, Berg AO, Aminoff SR, Agartz I, Melle I, Andreassen OA (2009)
Age at onset of bipolar disorder in a Norwegian catchment area sample
J Affect Disord, 124 (1-2), 174-7
PubMed 19931918

Morken G, Vaaler AE, Folden GE, Andreassen OA, Malt UF (2009)
Age at onset of first episode and time to treatment in in-patients with bipolar disorder
Br J Psychiatry, 194 (6), 559-60
PubMed 19478300

Otnaess MK, Djurovic S, Rimol LM, Kulle B, Kähler AK, Jönsson EG, Agartz I, Sundet K, Hall H, Timm S, Hansen T, Callicott JH, Melle I, Werge T, Andreassen OA (2009)
Evidence for a possible association of neurotrophin receptor (NTRK-3) gene polymorphisms with hippocampal function and schizophrenia
Neurobiol Dis, 34 (3), 518-24
PubMed 19344762

Price AL, Helgason A, Palsson S, Stefansson H, St Clair D, Andreassen OA, Reich D, Kong A, Stefansson K (2009)
The impact of divergence time on the nature of population structure: an example from Iceland
PLoS Genet, 5 (6), e1000505
PubMed 19503599

Rimol LM, Agartz I, Djurovic S, Brown AA, Roddey JC, Kähler AK, Mattingsdal M, Athanasiu L, Joyner AH, Schork NJ, Halgren E, Sundet K, Melle I, Dale AM, Andreassen OA, Alzheimer's Disease Neuroimaging Initiative (2009)
Sex-dependent association of common variants of microcephaly genes with brain structure
Proc Natl Acad Sci U S A, 107 (1), 384-8
PubMed 20080800

Ringen PA, Vaskinn A, Sundet K, Engh JA, Jónsdóttir H, Simonsen C, Friis S, Opjordsmoen S, Melle I, Andreassen OA (2009)
Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia
Psychol Med, 40 (8), 1337-47
PubMed 19891810

Simonsen C, Sundet K, Vaskinn A, Birkenaes AB, Engh JA, Faerden A, Jónsdóttir H, Ringen PA, Opjordsmoen S, Melle I, Friis S, Andreassen OA (2009)
Neurocognitive dysfunction in bipolar and schizophrenia spectrum disorders depends on history of psychosis rather than diagnostic group
Schizophr Bull, 37 (1), 73-83
PubMed 19443616

Stefansson H, Ophoff RA, Steinberg S, Andreassen OA, Cichon S, Rujescu D, Werge T, Pietiläinen OP, Mors O, Mortensen PB, Sigurdsson E, Gustafsson O, Nyegaard M, Tuulio-Henriksson A, Ingason A, Hansen T, Suvisaari J, Lonnqvist J, Paunio T, Børglum AD, Hartmann A, Fink-Jensen A, Nordentoft M, Hougaard D, Norgaard-Pedersen B et al. (2009)
Common variants conferring risk of schizophrenia
Nature, 460 (7256), 744-7
PubMed 19571808

Tesli M, Kähler AK, Andreassen BK, Werge T, Mors O, Mellerup E, Koefoed P, Melle I, Morken G, Wirgenes KV, Andreassen OA, Djurovic S (2009)
No association between DGKH and bipolar disorder in a Scandinavian case-control sample
Psychiatr Genet, 19 (5), 269-72
PubMed 19478689

van Schijndel JE, van Loo KM, van Zweeden M, Djurovic S, Andreassen OA, Hansen T, Werge T, Kallunki P, Pedersen JT, Martens GJ (2009)
Three-cohort targeted gene screening reveals a non-synonymous TRKA polymorphism associated with schizophrenia
J Psychiatr Res, 43 (15), 1195-9
PubMed 19435634

Vaskinn A, Sundet K, Friis S, Ueland T, Simonsen C, Birkenaes AB, Engh JA, Jónsdóttir H, Opjordsmoen S, Ringen PA, Andreassen OA (2009)
Using the Wisconsin Card Sorting Test to assess learning potential in normal IQ schizophrenia: does it have potential?
Nord J Psychiatry, 63 (5), 405-11
PubMed 19365785

Vaskinn A, Sundet K, Hultman CM, Friis S, Andreassen OA (2009)
Social problem-solving in high-functioning schizophrenia: specific deficits in sending skills
Psychiatry Res, 165 (3), 215-23
PubMed 19136154

Welander-Vatn AS, Jensen J, Lycke C, Agartz I, Server A, Gadmar ØB, Melle I, Nakstad PH, Andreassen OA (2009)
No altered dorsal anterior cingulate activation in bipolar II disorder patients during a Go/No-go task: an fMRI study
Bipolar Disord, 11 (3), 270-9
PubMed 19419384

Wirgenes KV, Djurovic S, Agartz I, Jonsson EG, Werge T, Melle I, Andreassen OA (2009)
Dysbindin and d-amino-acid-oxidase gene polymorphisms associated with positive and negative symptoms in schizophrenia
Neuropsychobiology, 60 (1), 31-6
PubMed 19729970

Publications 2008

Birkenaes AB, Birkeland KI, Engh JA, Faerden A, Jonsdottir H, Ringen PA, Friis S, Opjordsmoen S, Andreassen OA (2008)
Dyslipidemia independent of body mass in antipsychotic-treated patients under real-life conditions
J Clin Psychopharmacol, 28 (2), 132-7
PubMed 18344722

Djurovic S, Kähler AK, Kulle B, Jönsson EG, Agartz I, Le Hellard S, Hall H, Jakobsen KD, Hansen T, Melle I, Werge T, Steen VM, Andreassen OA (2008)
A possible association between schizophrenia and GRIK3 polymorphisms in a multicenter sample of Scandinavian origin (SCOPE)
Schizophr Res, 107 (2-3), 242-8
PubMed 19022628

Jónsdóttir H, Engh JA, Friis S, Birkenaes A, Ringen PA, Vaskinn A, Sundet K, Opjordsmoen S, Andreassen OA (2008)
Measurement of insight in patients with bipolar disorder: are self-rated scales developed for patients with schizophrenia applicable?
J Nerv Ment Dis, 196 (4), 333-5
PubMed 18414129

Jónsdóttir H, Friis S, Horne R, Pettersen KI, Reikvam A, Andreassen OA (2008)
Beliefs about medications: measurement and relationship to adherence in patients with severe mental disorders
Acta Psychiatr Scand, 119 (1), 78-84
PubMed 18983630

Jönsson EG, Larsson K, Vares M, Hansen T, Wang AG, Djurovic S, Rønningen KS, Andreassen OA, Agartz I, Werge T, Terenius L, Hall H (2008)
Two methylenetetrahydrofolate reductase gene (MTHFR) polymorphisms, schizophrenia and bipolar disorder: an association study
Am J Med Genet B Neuropsychiatr Genet, 147B (6), 976-82
PubMed 18165967

Kähler AK, Djurovic S, Kulle B, Jönsson EG, Agartz I, Hall H, Opjordsmoen S, Jakobsen KD, Hansen T, Melle I, Werge T, Steen VM, Andreassen OA (2008)
Association analysis of schizophrenia on 18 genes involved in neuronal migration: MDGA1 as a new susceptibility gene
Am J Med Genet B Neuropsychiatr Genet, 147B (7), 1089-100
PubMed 18384059

Le Hellard S, Mühleisen TW, Djurovic S, Fernø J, Ouriaghi Z, Mattheisen M, Vasilescu C, Raeder MB, Hansen T, Strohmaier J, Georgi A, Brockschmidt FF, Melle I, Nenadic I, Sauer H, Rietschel M, Nöthen MM, Werge T, Andreassen OA, Cichon S, Steen VM (2008)
Polymorphisms in SREBF1 and SREBF2, two antipsychotic-activated transcription factors controlling cellular lipogenesis, are associated with schizophrenia in German and Scandinavian samples
Mol Psychiatry, 15 (5), 463-72
PubMed 18936756

Olsen L, Hansen T, Jakobsen KD, Djurovic S, Melle I, Agartz I, Hall H, Ullum H, Timm S, Wang AG, Jönsson EG, Andreassen OA, Werge T (2008)
The estrogen hypothesis of schizophrenia implicates glucose metabolism: association study in three independent samples
BMC Med Genet, 9, 39
PubMed 18460190

Ousdal OT, Jensen J, Server A, Hariri AR, Nakstad PH, Andreassen OA (2008)
The human amygdala is involved in general behavioral relevance detection: evidence from an event-related functional magnetic resonance imaging Go-NoGo task
Neuroscience, 156 (3), 450-5
PubMed 18775476

Ringen PA, Melle I, Birkenaes AB, Engh JA, Faerden A, Vaskinn A, Friis S, Opjordsmoen S, Andreassen OA (2008)
The level of illicit drug use is related to symptoms and premorbid functioning in severe mental illness
Acta Psychiatr Scand, 118 (4), 297-304
PubMed 18759810

Rujescu D, Ingason A, Cichon S, Pietiläinen OP, Barnes MR, Toulopoulou T, Picchioni M, Vassos E, Ettinger U, Bramon E, Murray R, Ruggeri M, Tosato S, Bonetto C, Steinberg S, Sigurdsson E, Sigmundsson T, Petursson H, Gylfason A, Olason PI, Hardarsson G, Jonsdottir GA, Gustafsson O, Fossdal R, Giegling I et al. (2008)
Disruption of the neurexin 1 gene is associated with schizophrenia
Hum Mol Genet, 18 (5), 988-96
PubMed 18945720

Saetre P, Agartz I, De Franciscis A, Lundmark P, Djurovic S, Kähler A, Andreassen OA, Jakobsen KD, Rasmussen HB, Werge T, Hall H, Terenius L, Jönsson EG (2008)
Association between a disrupted-in-schizophrenia 1 (DISC1) single nucleotide polymorphism and schizophrenia in a combined Scandinavian case-control sample
Schizophr Res, 106 (2-3), 237-41
PubMed 18818052

Simonsen C, Sundet K, Vaskinn A, Birkenaes AB, Engh JA, Hansen CF, Jónsdóttir H, Ringen PA, Opjordsmoen S, Friis S, Andreassen OA (2008)
Neurocognitive profiles in bipolar I and bipolar II disorder: differences in pattern and magnitude of dysfunction
Bipolar Disord, 10 (2), 245-55
PubMed 18271903

Stefansson H, Rujescu D, Cichon S, Pietiläinen OP, Ingason A, Steinberg S, Fossdal R, Sigurdsson E, Sigmundsson T, Buizer-Voskamp JE, Hansen T, Jakobsen KD, Muglia P, Francks C, Matthews PM, Gylfason A, Halldorsson BV, Gudbjartsson D, Thorgeirsson TE, Sigurdsson A, Jonasdottir A, Jonasdottir A, Bjornsson A, Mattiasdottir S, Blondal T et al. (2008)
Large recurrent microdeletions associated with schizophrenia
Nature, 455 (7210), 232-6
PubMed 18668039

Vaskinn A, Sundet K, Friis S, Simonsen C, Birkenaes AB, Jónsdóttir H, Ringen PA, Andreassen OA (2008)
Emotion perception and learning potential: mediators between neurocognition and social problem-solving in schizophrenia?
J Int Neuropsychol Soc, 14 (2), 279-88
PubMed 18282325

Vaskinn A, Sundet K, Friis S, Ueland T, Simonsen C, Birkenaes AB, Engh JA, Opjordsmoen S, Andreassen OA (2008)
Can learning potential in schizophrenia be assessed with the standard CVLT-II? An exploratory study
Scand J Psychol, 49 (2), 179-86
PubMed 18352988

Vik-Mo AO, Birkenaes AB, Fernø J, Jonsdottir H, Andreassen OA, Steen VM (2008)
Increased expression of lipid biosynthesis genes in peripheral blood cells of olanzapine-treated patients
Int J Neuropsychopharmacol, 11 (5), 679-84
PubMed 18241359

Publications 2007

Birkenaes AB, Opjordsmoen S, Brunborg C, Engh JA, Jonsdottir H, Ringen PA, Simonsen C, Vaskinn A, Birkeland KI, Friis S, Sundet K, Andreassen OA (2007)
The level of cardiovascular risk factors in bipolar disorder equals that of schizophrenia: a comparative study
J Clin Psychiatry, 68 (6), 917-23
PubMed 17592917

Engh JA, Friis S, Birkenaes AB, Jónsdóttir H, Ringen PA, Ruud T, Sundet KS, Opjordsmoen S, Andreassen OA (2007)
Measuring cognitive insight in schizophrenia and bipolar disorder: a comparative study
BMC Psychiatry, 7, 71
PubMed 18072961

Hansen T, Olsen L, Lindow M, Jakobsen KD, Ullum H, Jonsson E, Andreassen OA, Djurovic S, Melle I, Agartz I, Hall H, Timm S, Wang AG, Werge T (2007)
Brain expressed microRNAs implicated in schizophrenia etiology
PLoS One, 2 (9), e873
PubMed 17849003

Ringen PA, Lagerberg TV, Birkenaes AB, Engn J, Faerden A, Jónsdottir H, Nesvåg R, Friis S, Opjordsmoen S, Larsen F, Melle I, Andreassen OA (2007)
Differences in prevalence and patterns of substance use in schizophrenia and bipolar disorder
Psychol Med, 38 (9), 1241-9
PubMed 18070373

Ringen PA, Melle I, Birkenaes AB, Engh JA, Faerden A, Jónsdóttir H, Nesvåg R, Vaskinn A, Friis S, Larsen F, Opjordsmoen S, Sundet K, Andreassen OA (2007)
Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross-sectional study
Acta Psychiatr Scand, 117 (2), 133-8
PubMed 18081921

Vaskinn A, Sundet K, Friis S, Simonsen C, Birkenaes AB, Engh JA, Jónsdóttir H, Ringen PA, Opjordsmoen S, Andreassen OA (2007)
The effect of gender on emotion perception in schizophrenia and bipolar disorder
Acta Psychiatr Scand, 116 (4), 263-70
PubMed 17803756

Publications 2006

Andreassen OA, Steen VM (2006)
[Pharmacogenetics and tailored drug treatment in schizophrenia]
Tidsskr Nor Laegeforen, 126 (18), 2400-2
PubMed 16998555

Birkenaes AB, Søgaard AJ, Engh JA, Jonsdottir H, Ringen PA, Vaskinn A, Friis S, Sundet K, Opjordsmoen S, Andreassen OA (2006)
Sociodemographic characteristics and cardiovascular risk factors in patients with severe mental disorders compared with the general population
J Clin Psychiatry, 67 (3), 425-33
PubMed 16649830

Publications 2005

Hem E, Andreassen OA, Robasse JM, Vatnaland T, Opjordsmoen S (2005)
Should catatonia be part of the differential diagnosis of coma?
Nord J Psychiatry, 59 (6), 528-30
PubMed 16316908

Jenkins BG, Andreassen OA, Dedeoglu A, Leavitt B, Hayden M, Borchelt D, Ross CA, Ferrante RJ, Beal MF (2005)
Effects of CAG repeat length, HTT protein length and protein context on cerebral metabolism measured using magnetic resonance spectroscopy in transgenic mouse models of Huntington's disease
J Neurochem, 95 (2), 553-62
PubMed 16135087

Publications 2004

Andreassen OA, Bentsen H (2004)
[Metabolic and cardiovascular adverse effects of modern antipsychotic agents]
Tidsskr Nor Laegeforen, 124 (2), 181-2
PubMed 14743232

Publications 2003

Andreassen OA, Ferrante RJ, Aamo TO, Beal MF, Jørgensen HA (2003)
Oral dyskinesias and histopathological alterations in substantia nigra after long-term haloperidol treatment of old rats
Neuroscience, 122 (3), 717-25
PubMed 14622915

Andreassen OA, Waage J, Finsen B, Jørgensen HA (2003)
Memantine attenuates the increase in striatal preproenkephalin mRNA expression and development of haloperidol-induced persistent oral dyskinesias in rats
Brain Res, 994 (2), 188-92
PubMed 14642644

Publications 2002

Andreassen OA, Dedeoglu A, Stanojevic V, Hughes DB, Browne SE, Leech CA, Ferrante RJ, Habener JF, Beal MF, Thomas MK (2002)
Huntington's disease of the endocrine pancreas: insulin deficiency and diabetes mellitus due to impaired insulin gene expression
Neurobiol Dis, 11 (3), 410-24
PubMed 12586550

Andreassen OA, Steen VM (2002)
[Schizophrenia and molecular genetics]
Tidsskr Nor Laegeforen, 122 (21), 2118-22
PubMed 12555650

Dedeoglu A, Ferrante RJ, Andreassen OA, Dillmann WH, Beal MF (2002)
Mice overexpressing 70-kDa heat shock protein show increased resistance to malonate and 3-nitropropionic acid
Exp Neurol, 176 (1), 262-5
PubMed 12093104

Ferrante RJ, Andreassen OA, Dedeoglu A, Ferrante KL, Jenkins BG, Hersch SM, Beal MF (2002)
Therapeutic effects of coenzyme Q10 and remacemide in transgenic mouse models of Huntington's disease
J Neurosci, 22 (5), 1592-9
PubMed 11880489

Wendt S, Dedeoglu A, Speer O, Wallimann T, Beal MF, Andreassen OA (2002)
Reduced creatine kinase activity in transgenic amyotrophic lateral sclerosis mice
Free Radic Biol Med, 32 (9), 920-6
PubMed 11978494

Publications 2001

Andreassen OA, Dedeoglu A, Ferrante RJ, Jenkins BG, Ferrante KL, Thomas M, Friedlich A, Browne SE, Schilling G, Borchelt DR, Hersch SM, Ross CA, Beal MF (2001)
Creatine increase survival and delays motor symptoms in a transgenic animal model of Huntington's disease
Neurobiol Dis, 8 (3), 479-91
PubMed 11447996

Andreassen OA, Dedeoglu A, Friedlich A, Ferrante KL, Hughes D, Szabo C, Beal MF (2001)
Effects of an inhibitor of poly(ADP-ribose) polymerase, desmethylselegiline, trientine, and lipoic acid in transgenic ALS mice
Exp Neurol, 168 (2), 419-24
PubMed 11259130

Andreassen OA, Ferrante RJ, Dedeoglu A, Albers DW, Klivenyi P, Carlson EJ, Epstein CJ, Beal MF (2001)
Mice with a partial deficiency of manganese superoxide dismutase show increased vulnerability to the mitochondrial toxins malonate, 3-nitropropionic acid, and MPTP
Exp Neurol, 167 (1), 189-95
PubMed 11161607

Andreassen OA, Ferrante RJ, Dedeoglu A, Beal MF (2001)
Lipoic acid improves survival in transgenic mouse models of Huntington's disease
Neuroreport, 12 (15), 3371-3
PubMed 11711888

Andreassen OA, Ferrante RJ, Huang HM, Dedeoglu A, Park L, Ferrante KL, Kwon J, Borchelt DR, Ross CA, Gibson GE, Beal MF (2001)
Dichloroacetate exerts therapeutic effects in transgenic mouse models of Huntington's disease
Ann Neurol, 50 (1), 112-7
PubMed 11456300

Andreassen OA, Ferrante RJ, Klivenyi P, Klein AM, Dedeoglu A, Albers DS, Kowall NW, Beal MF (2001)
Transgenic ALS mice show increased vulnerability to the mitochondrial toxins MPTP and 3-nitropropionic acid
Exp Neurol, 168 (2), 356-63
PubMed 11259123

Andreassen OA, Jenkins BG, Dedeoglu A, Ferrante KL, Bogdanov MB, Kaddurah-Daouk R, Beal MF (2001)
Increases in cortical glutamate concentrations in transgenic amyotrophic lateral sclerosis mice are attenuated by creatine supplementation
J Neurochem, 77 (2), 383-90
PubMed 11299300

Andreassen OA, Meshul CK, Moore C, Jørgensen HA (2001)
Oral dyskinesias and morphological changes in rat striatum during long-term haloperidol administration
Psychopharmacology (Berl), 157 (1), 11-9
PubMed 11512038

Bogdanov MB, Andreassen OA, Dedeoglu A, Ferrante RJ, Beal MF (2001)
Increased oxidative damage to DNA in a transgenic mouse model of Huntington's disease
J Neurochem, 79 (6), 1246-9
PubMed 11752065

Publications 2000

Andreassen OA, Dedeoglu A, Klivenyi P, Beal MF, Bush AI (2000)
N-acetyl-L-cysteine improves survival and preserves motor performance in an animal model of familial amyotrophic lateral sclerosis
Neuroreport, 11 (11), 2491-3
PubMed 10943709

Andreassen OA, Ferrante RJ, Hughes DB, Klivenyi P, Dedeoglu A, Ona VO, Friedlander RM, Beal MF (2000)
Malonate and 3-nitropropionic acid neurotoxicity are reduced in transgenic mice expressing a caspase-1 dominant-negative mutant
J Neurochem, 75 (2), 847-52
PubMed 10899963

Andreassen OA, Ferrante RJ, Klivenyi P, Klein AM, Shinobu LA, Epstein CJ, Beal MF (2000)
Partial deficiency of manganese superoxide dismutase exacerbates a transgenic mouse model of amyotrophic lateral sclerosis
Ann Neurol, 47 (4), 447-55
PubMed 10762155

Andreassen OA, Finsen B, Ostergaard K, West MJ, Jørgensen HA (2000)
Reduced number of striatal neurons expressing preprosomatostatin mRNA in rats with oral dyskinesias after long-term haloperidol administration
Neurosci Lett, 279 (1), 21-4
PubMed 10670778

Andreassen OA, Jørgensen HA (2000)
Neurotoxicity associated with neuroleptic-induced oral dyskinesias in rats. Implications for tardive dyskinesia?
Prog Neurobiol, 61 (5), 525-41
PubMed 10748322

Ferrante RJ, Andreassen OA, Jenkins BG, Dedeoglu A, Kuemmerle S, Kubilus JK, Kaddurah-Daouk R, Hersch SM, Beal MF (2000)
Neuroprotective effects of creatine in a transgenic mouse model of Huntington's disease
J Neurosci, 20 (12), 4389-97
PubMed 10844007

Jenkins BG, Klivenyi P, Kustermann E, Andreassen OA, Ferrante RJ, Rosen BR, Beal MF (2000)
Nonlinear decrease over time in N-acetyl aspartate levels in the absence of neuronal loss and increases in glutamine and glucose in transgenic Huntington's disease mice
J Neurochem, 74 (5), 2108-19
PubMed 10800956

Klivenyi P, Andreassen OA, Ferrante RJ, Dedeoglu A, Mueller G, Lancelot E, Bogdanov M, Andersen JK, Jiang D, Beal MF (2000)
Mice deficient in cellular glutathione peroxidase show increased vulnerability to malonate, 3-nitropropionic acid, and 1-methyl-4-phenyl-1,2,5,6-tetrahydropyridine
J Neurosci, 20 (1), 1-7
PubMed 10627575

Klivenyi P, Andreassen OA, Ferrante RJ, Lancelot E, Reif D, Beal MF (2000)
Inhibition of neuronal nitric oxide synthase protects against MPTP toxicity
Neuroreport, 11 (6), 1265-8
PubMed 10817604

Petersen R, Finsen B, Andreassen OA, Zimmer J, Jørgensen HA (2000)
No changes in dopamine D(1) receptor mRNA expressing neurons in the dorsal striatum of rats with oral movements induced by long-term haloperidol administration
Brain Res, 859 (2), 394-7
PubMed 10719094

Publications 1999

Andreassen OA, Finsen B, Ostergaard K, Sørensen JC, West MJ, Jørgensen HA (1999)
The relationship between oral dyskinesias produced by long-term haloperidol treatment, the density of striatal preproenkephalin messenger RNA and enkephalin peptide, and the number of striatal neurons expressing preproenkephalin messenger RNA in rats
Neuroscience, 88 (1), 27-35
PubMed 10051187

Andreassen OA, Weber C, Jørgensen HA (1999)
Coenzyme Q10 does not prevent oral dyskinesias induced by long-term haloperidol treatment of rats
Pharmacol Biochem Behav, 64 (3), 637-42
PubMed 10548281

Klivenyi P, Ferrante RJ, Matthews RT, Bogdanov MB, Klein AM, Andreassen OA, Mueller G, Wermer M, Kaddurah-Daouk R, Beal MF (1999)
Neuroprotective effects of creatine in a transgenic animal model of amyotrophic lateral sclerosis
Nat Med, 5 (3), 347-50
PubMed 10086395

Publications 1998

Andreassen OA, Ferrante RJ, Beal MF, Jørgensen HA (1998)
Oral Dyskinesias and striatal lesions in rats after long-term co-treatment with haloperidol and 3-nitropropionic acid
Neuroscience, 87 (3), 639-48
PubMed 9758230

Klivenyi P, Beal MF, Ferrante RJ, Andreassen OA, Wermer M, Chin MR, Bonventre JV (1998)
Mice deficient in group IV cytosolic phospholipase A2 are resistant to MPTP neurotoxicity
J Neurochem, 71 (6), 2634-7
PubMed 9832165

Publications 1997

Andreassen OA, MacEwan T, Gulbrandsen AK, McCreadie RG, Steen VM (1997)
Non-functional CYP2D6 alleles and risk for neuroleptic-induced movement disorders in schizophrenic patients
Psychopharmacology (Berl), 131 (2), 174-9
PubMed 9201806

Publications 1996

Andreassen OA, Aamo TO, Jøorgensen HA (1996)
Inhibition by memantine of the development of persistent oral dyskinesias induced by long-term haloperidol treatment of rats
Br J Pharmacol, 119 (4), 751-7
PubMed 8904651

Daly AK, Fairbrother KS, Andreassen OA, London SJ, Idle JR, Steen VM (1996)
Characterization and PCR-based detection of two different hybrid CYP2D7P/CYP2D6 alleles associated with the poor metabolizer phenotype
Pharmacogenetics, 6 (4), 319-28
PubMed 8873218

Meshul CK, Andreassen OA, Allen C, Jørgensen HA (1996)
Correlation of vacuous chewing movements with morphological changes in rats following 1-year treatment with haloperidol
Psychopharmacology (Berl), 125 (3), 238-47
PubMed 8815959

West MJ, Ostergaard K, Andreassen OA, Finsen B (1996)
Estimation of the number of somatostatin neurons in the striatum: an in situ hybridization study using the optical fractionator method
J Comp Neurol, 370 (1), 11-22
PubMed 8797153

Publications 1995

Andreassen OA, Jørgensen HA (1995)
The mitochondrial toxin 3-nitropropionic acid induces vacuous chewing movements in rats. Implications for tardive dyskinesia?
Psychopharmacology (Berl), 119 (4), 474-6
PubMed 7480528

Andreassen OA, Jørgensen HA (1995)
The rat model of tardive dyskinesia: relationship between vacuous chewing movements and gross motor activity during acute and long-term haloperidol treatment
Life Sci, 57 (24), 2263-72
PubMed 7475980

Steen VM, Andreassen OA, Daly AK, Tefre T, Børresen AL, Idle JR, Gulbrandsen AK (1995)
Detection of the poor metabolizer-associated CYP2D6(D) gene deletion allele by long-PCR technology
Pharmacogenetics, 5 (4), 215-23
PubMed 8528268

Publications 1994

Andreassen OA, Jørgensen HA (1994)
GM1 ganglioside attenuates the development of vacuous chewing movements induced by long-term haloperidol treatment of rats
Psychopharmacology (Berl), 116 (4), 517-22
PubMed 7701057

Andreassen OA, Jørgensen HA (1994)
Tardive dyskinesia: behavioral effects of repeated intracerebroventricular haloperidol injections in rats do not confirm the kindling hypothesis
Pharmacol Biochem Behav, 49 (2), 309-12
PubMed 7824543

Jørgensen HA, Andreassen OA, Hole K (1994)
The relationship between motor effects in rats following acute and chronic haloperidol treatment
Psychopharmacology (Berl), 116 (1), 89-92
PubMed 7862936