Gastroenterology research group Publications

Publications 2024

Anisdahl K, Lirhus SS, Medhus AW, Moum B, Melberg HO, Høivik ML (2024)
Frailty risk and treatment strategy in elderly-onset inflammatory bowel disease. A Norwegian nationwide population-based registry study
Dig Liver Dis (in press)
DOI 10.1016/j.dld.2024.02.002, PubMed 38433021

Druckrey-Fiskaaen KT, Vold JH, Madebo T, Midgard H, Dalgard O, Leiva RA, Fadnes LT, INTRO-HCV Study Group (2024)
Liver stiffness and associated risk factors among people with a history of injecting drugs: a prospective cohort study
Subst Abuse Treat Prev Policy, 19 (1), 21
DOI 10.1186/s13011-024-00603-z, PubMed 38532435

Midgard H, Malme KB, Pihl CM, Berg-Pedersen RM, Tanum L, Klundby I, Haug A, Tveter I, Bjørnestad R, Olsen IC, Finbråten AK, Dalgard O (2024)
Opportunistic Treatment of Hepatitis C Infection Among Hospitalized People Who Inject Drugs (OPPORTUNI-C): A Stepped Wedge Cluster Randomized Trial
Clin Infect Dis, 78 (3), 582-590
DOI 10.1093/cid/ciad711, PubMed 37992203

Wiken TH, Høivik ML, Anisdahl K, Buer L, Warren DJ, Bolstad N, Hagen M, Moum BA, Medhus AW (2024)
Subcutaneous Vedolizumab Treatment in a Real-World Inflammatory Bowel Disease Cohort Switched From Intravenous Vedolizumab: Eighteen-Month Prospective Follow-up Study
Crohns Colitis 360, 6 (1), otae013
DOI 10.1093/crocol/otae013, PubMed 38544907

Zerouga I, Valeur J, Sommer C, Cvancarova Småstuen M, Medhus AW, Lund C, Johansen I, Cetinkaya RB, Bengtson MB, Torp R, Hovde Ø, Huppertz-Hauss G, Detlie TE, Aabrekk TB, Ricanek P, Frigstad SO, Hopstock LA, Opheim R, Kristensen VA, Høivik ML, Hauger Carlsen M, Aas AM (2024)
Dietary intake and nutritional status in patients with newly diagnosed inflammatory bowel disease: insights from the IBSEN III study
Scand J Gastroenterol, 1-9 (in press)
DOI 10.1080/00365521.2024.2313056, PubMed 38356408

Publications 2023

Ali S, Jha D, Ghatwary N, Realdon S, Cannizzaro R, Salem OE, Lamarque D, Daul C, Riegler MA, Anonsen KV, Petlund A, Halvorsen P, Rittscher J, de Lange T, East JE (2023)
A multi-centre polyp detection and segmentation dataset for generalisability assessment
Sci Data, 10 (1), 75
DOI 10.1038/s41597-023-01981-y, PubMed 36746950

Evensen H, Sandstad O, Larssen L, Hagen M, Kristensen VA, Søvik TT, Schulz A, Hauge T, Medhus AW (2023)
Intraoperative distensibility measurement in POEM for achalasia: impact on patient outcome and associations with other outcome variables at 1-year follow-up
Surg Endosc, 37 (12), 9283-9290
DOI 10.1007/s00464-023-10494-z, PubMed 37880446

Haukeland JW, Vesterhus MN, Jørgensen KK, Frigstad SO, Karlsen TH (2023)
[The FIB-4 test as a decision-making tool]
Tidsskr Nor Laegeforen, 143 (5)
DOI 10.4045/tidsskr.23.0176, PubMed 36987901

Hole MJ, Jørgensen KK, Holm K, Braadland PR, Meyer-Myklestad MH, Medhus AW, Reikvam DH, Götz A, Grzyb K, Boberg KM, Karlsen TH, Kummen M, Hov JR (2023)
A shared mucosal gut microbiota signature in primary sclerosing cholangitis before and after liver transplantation
Hepatology, 77 (3), 715-728
DOI 10.1002/hep.32773, PubMed 36056902

Hole MJ, Jørgensen KK, Holm K, Braadland PR, Meyer-Myklestad MH, Medhus AW, Reikvam DH, Götz A, Grzyb K, Boberg KM, Karlsen TH, Kummen M, Hov JR (2023)
Reply: The mucosal gut signature in primary sclerosing cholangitis before and after liver transplantation. Is the dysbiosis index really predictive for the recurrence of PSC?
Hepatology, 77 (6), E188-E189
DOI 10.1097/HEP.0000000000000340, PubMed 36815351

Holten KIA, Bernklev T, Opheim R, Johansen I, Olsen BC, Lund C, Strande V, Medhus AW, Perminow G, Bengtson MB, Cetinkaya RB, Vatn S, Frigstad SO, Aabrekk TB, Detlie TE, Hovde Ø, Kristensen VA, Småstuen MC, Henriksen M, Huppertz-Hauss G, Høivik ML, Jelsness-Jørgensen LP (2023)
Fatigue in Patients with Newly Diagnosed Inflammatory Bowel Disease: Results from a Prospective Inception Cohort, the IBSEN III Study
J Crohns Colitis, 17 (11), 1781-1790
DOI 10.1093/ecco-jcc/jjad094, PubMed 37279652

Jørgensen KK, Høivik ML, Chopra A, Benth JŠ, Ricanek P, Moum PB, Jyssum I, Bolstad N, Warren DJ, Vaage PJT, Munthe PLA, Lundin PKEA, Anisdahl K, Syversen SW, Goll GL, Lund-Johansen F, Medhus AW, Jahnsen PJ (2023)
Humoral immune response to SARS-CoV-2 vaccination in patients with inflammatory bowel disease on immunosuppressive medication: association to serum drug levels and disease type
Scand J Gastroenterol, 58 (8), 874-882
DOI 10.1080/00365521.2023.2177884, PubMed 36788656

Malme KB, Ulstein K, Finbråten AK, Wüsthoff LEC, Kielland KB, Hauge J, Dalgard O, Midgard H (2023)
Hepatitis C treatment uptake among people who inject drugs in Oslo, Norway: A registry-based study
Int J Drug Policy, 116, 104044
DOI 10.1016/j.drugpo.2023.104044, PubMed 37149914

Mikalsen IM, Breder S, Medhus AW, Folseraas T, Aabakken L, Ånonsen KV (2023)
ERCP for the initial management of malignant biliary obstruction - real world data on 596 procedures
Scand J Gastroenterol, 59 (3), 369-377
DOI 10.1080/00365521.2023.2282375, PubMed 37994406

Opheim E, Dalgard O, Ulstein K, Sørli H, Backe Ø, Foshaug T, Couëssurel Wüsthoff LE, Midgard H (2023)
Towards elimination of hepatitis C in Oslo: Cross-sectional prevalence studies among people who inject drugs
Int J Drug Policy, 123, 104279
DOI 10.1016/j.drugpo.2023.104279, PubMed 38061225

Polaris Observatory Collaborators (2023)
Global prevalence, cascade of care, and prophylaxis coverage of hepatitis B in 2022: a modelling study
Lancet Gastroenterol Hepatol, 8 (10), 879-907
DOI 10.1016/S2468-1253(23)00197-8, PubMed 37517414

Svanevik M, Lorentzen J, Borgeraas H, Sandbu R, Seip B, Medhus AW, Hertel JK, Kolotkin RL, Småstuen MC, Hofsø D, Hjelmesæth J (2023)
Patient-reported outcomes, weight loss, and remission of type 2 diabetes 3 years after gastric bypass and sleeve gastrectomy (Oseberg); a single-centre, randomised controlled trial
Lancet Diabetes Endocrinol, 11 (8), 555-566
DOI 10.1016/S2213-8587(23)00127-4, PubMed 37414071

Tran TT, Vaage EB, Mehta A, Chopra A, Tietze L, Kolderup A, Anthi A, König M, Nygaard G, Lind A, Müller F, Nissen-Meyer LS, Magnus P, Trogstad L, Mjaaland S, Søraas A, Midtvedt K, Åsberg A, Barratt-Due A, Medhus AW, Høivik ML, Lundin K, Karlsen RF, Dahle R, Danielsson K et al. (2023)
Author Correction: Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants
NPJ Vaccines, 8 (1), 4
DOI 10.1038/s41541-023-00600-6, PubMed 36697432

Wiken TH, Høivik ML, Buer L, Warren DJ, Bolstad N, Moum BA, Anisdahl K, Småstuen MC, Medhus AW (2023)
Switching from intravenous to subcutaneous vedolizumab maintenance treatment in patients with inflammatory bowel disease followed by therapeutic drug monitoring
Scand J Gastroenterol, 58 (8), 863-873
DOI 10.1080/00365521.2023.2176252, PubMed 36799155

Publications 2022

de Rijk FEM, van Veldhuisen CL, Besselink MG, van Hooft JE, van Santvoort HC, van Geenen EJM, Hegyi P, Löhr JM, Dominguez-Munoz JE, de Jonge PJF, Bruno MJ, Verdonk RC, Dutch Pancreatitis Study Group (2022)
Diagnosis and treatment of exocrine pancreatic insufficiency in chronic pancreatitis: An international expert survey and case vignette study
Pancreatology, 22 (4), 457-465
DOI 10.1016/j.pan.2022.03.013, PubMed 35346599

Erchinger F, Engjom T, Dimcevski G, Drewes AM, Olesen SS, Vujasinovic M, Löhr JM, Nøjgaard C, Novovic S, Laukkarinen J, Parhiala M, Björn L, Waage A, Hauge T, Pukitis A, Ozola-Zalite I, Kalaitzakis E, Okhlobystin A, Barauskas G, Eva Efsen D, Tjora E, Scandinavian Baltic Pancreatic Club (2022)
Exocrine pancreas insufficiency in chronic pancreatitis - Risk factors and associations with complications. A multicentre study of 1869 patients
Pancreatology, 22 (3), 374-380
DOI 10.1016/j.pan.2022.02.003, PubMed 35216905

Evensen H, Hjermstad MJ, Cvancarova M, Kristensen V, Larssen L, Skattum J, Hauge T, Sandstad O, Medhus AW (2022)
Quality of life in patients with achalasia: Associations with Eckardt score and objective treatment outcomes after peroral endoscopic myotomy
Endosc Int Open, 10 (12), E1570-E1576
DOI 10.1055/a-1968-7682, PubMed 36531682

Haukeland JW, Midgard H, Konopski Z, Sarna VK, Grøtta OJ, Kløw NE (2022)
[Transjugular intrahepatic portosystemic shunt for portal hypertension]
Tidsskr Nor Laegeforen, 142 (14)
DOI 10.4045/tidsskr.21.0911, PubMed 36226423

Kazmi SSH, Safi N, Berge ST, Kazmi M, Sundhagen JO, Julien K, Thorsby PM, Ånonsen KV, Medhus AW, Hisdal J (2022)
Plasma α-Glutathione S-Transferase in Patients with Chronic Mesenteric Ischemia and Median Arcuate Ligament Syndrome
Vasc Health Risk Manag, 18, 567-574
DOI 10.2147/VHRM.S365625, PubMed 35903288

Lorentzen J, Medhus AW, Hofsø D, Svanevik M, Seip B, Hjelmesæth J (2022)
Letter to the Editor regarding the article «Gerd symptoms after laparoscopic Roux-en-Y gastric bypass: an emerging scenario» by Antonella Santonicola, Luigi Ruggiero, Rossella Palma, Luigi Angrisani and Paola Iovino. International Journal of Obesity (2022) 46:1076-1078
Int J Obes (Lond), 46 (10), 1936-1937
DOI 10.1038/s41366-022-01200-5, PubMed 35933446

Meyer-Myklestad MH, Medhus AW, Lorvik KB, Seljeflot I, Hansen SH, Holm K, Stiksrud B, Trøseid M, Hov JR, Kvale D, Dyrhol-Riise AM, Kummen M, Reikvam DH (2022)
Human Immunodeficiency Virus-Infected Immunological Nonresponders Have Colon-Restricted Gut Mucosal Immune Dysfunction
J Infect Dis, 225 (4), 661-674
DOI 10.1093/infdis/jiaa714, PubMed 33216130

Meyer-Myklestad MH, Medhus AW, Stiksrud B, Lorvik KB, Seljeflot I, Hansen SH, Holm K, Hov JR, Kvale D, Dyrhol-Riise AM, Kummen M, Trøseid M, Reikvam DH (2022)
Probiotics to HIV-Infected Immunological Nonresponders: Altered Mucosal Immunity and Microbial Diversity Restricted to Ileum
J Acquir Immune Defic Syndr, 89 (1), 77-86
DOI 10.1097/QAI.0000000000002817, PubMed 34878437

Midgard H, Bjørnestad R, Egeland M, Dahl E, Finbråten AK, Kielland KB, Blindheim M, Dalgard O (2022)
Peer support in small towns: A decentralized mobile Hepatitis C virus clinic for people who inject drugs
Liver Int, 42 (6), 1268-1277
DOI 10.1111/liv.15266, PubMed 35362660

Nordaas IK, Tjora E, Dimcevski G, Haldorsen IS, Olesen SS, Drewes AM, Zviniene K, Barauskas G, Bayram BK, Nørregaard P, Borch A, Nøjgaard C, Jensen AB, Kardasheva SS, Okhlobystin A, Hauge T, Waage A, Frøkjaer JB, Engjom T, Scandinavian Baltic Pancreatic Club (2022)
Structural imaging findings are related to clinical complications in chronic pancreatitis
United European Gastroenterol J, 10 (4), 385-395
DOI 10.1002/ueg2.12228, PubMed 35396813

Pinto R, Hauge T, Jeanmougin M, Pharo HD, Kresse SH, Honne H, Winge SB, Five MB, Kumar T, Mala T, Hauge T, Johnson E, Lind GE (2022)
Targeted genetic and epigenetic profiling of esophageal adenocarcinomas and non-dysplastic Barrett's esophagus
Clin Epigenetics, 14 (1), 77
DOI 10.1186/s13148-022-01287-7, PubMed 35701814

Polaris Observatory HCV Collaborators (2022)
Global change in hepatitis C virus prevalence and cascade of care between 2015 and 2020: a modelling study
Lancet Gastroenterol Hepatol, 7 (5), 396-415
DOI 10.1016/S2468-1253(21)00472-6, PubMed 35180382

Safi N, Ånonsen KV, Berge ST, Medhus AW, Sundhagen JO, Hisdal J, Kazmi SSH (2022)
Early Identification of Chronic Mesenteric Ischemia with Endoscopic Duplex Ultrasound
Vasc Health Risk Manag, 18, 233-243
DOI 10.2147/VHRM.S358570, PubMed 35431549

Tran TT, Vaage EB, Mehta A, Chopra A, Tietze L, Kolderup A, Anthi A, König M, Nygaard G, Lind A, Müller F, Nissen-Meyer LS, Magnus P, Trogstad L, Mjaaland S, Søraas A, Midtvedt K, Åsberg A, Barratt-Due A, Medhus AW, Høivik ML, Lundin K, Karlsen RF, Dahle R, Danielsson K et al. (2022)
Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants
NPJ Vaccines, 7 (1), 174
DOI 10.1038/s41541-022-00586-7, PubMed 36585405

Vesterhus M, Jørgensen KK, Frigstad SO, Haukeland JW, Karlsen TH (2022)
[We need a new strategy for liver disease]
Tidsskr Nor Laegeforen, 142 (3)
DOI 10.4045/tidsskr.21.0892, PubMed 35170917

Waage A, Vinge-Holmquist O, Labori KJ, Paulsen V, Aabakken L, Lenz H, Felix Magnus HC, Tholfsen T, Hauge T (2022)
Tailored surgery in chronic pancreatitis after implementation of a multidisciplinary team assessment; a prospective observational study
HPB (Oxford), 24 (12), 2157-2166
DOI 10.1016/j.hpb.2022.09.007, PubMed 36272955

Publications 2021

Anisdahl K, Svatun Lirhus S, Medhus AW, Moum B, Melberg HO, Høivik ML (2021)
First-line biologic treatment of inflammatory bowel disease during the first 12 months after diagnosis from 2010 to 2016: a Norwegian nationwide registry study
Scand J Gastroenterol, 56 (10), 1163-1168
DOI 10.1080/00365521.2021.1955147, PubMed 34320885

Busschots D, Bielen R, Koc ÖM, Heyens L, Verrando R, de Galocsy C, Van Steenkiste C, Nevens F, Midgard H, Dalgard O, Robaeys G (2021)
Hepatitis C reinfection in former and active injecting drug users in Belgium
Harm Reduct J, 18 (1), 102
DOI 10.1186/s12954-021-00552-x, PubMed 34641896

Dalgard O, Midgard H, Kielland KB (2021)
Hepatitis C in Iceland: a milestone for global elimination
Lancet Gastroenterol Hepatol, 6 (8), 599-600
DOI 10.1016/S2468-1253(21)00182-5, PubMed 34171268

Engjom T, Nordaas IK, Tjora E, Dimcevski G, Haldorsen IS, Olesen SS, Drewes AM, Zviniene K, Barauskas G, Riis Jespersen HS, Jensen N, Borch A, Nøjgaard C, Novovic S, Kardasheva SS, Okhlobystin A, Hauge T, Waage A, Frøkjær JB (2021)
Aetiological risk factors are associated with distinct imaging findings in patients with chronic pancreatitis: A study of 959 cases from the Scandinavian Baltic Pancreatic Club (SBPC) imaging database
Pancreatology, 21 (4), 688-697
DOI 10.1016/j.pan.2021.02.023, PubMed 33707113

Evensen H, Småstuen MC, Schulz A, Kristensen V, Larssen L, Skattum J, Sandstad O, Hauge T, Medhus AW (2021)
One year comprehensive prospective follow-up of achalasia patients after peroral endoscopic myotomy
Ann Med, 53 (1), 2225-2233
DOI 10.1080/07853890.2021.2005253, PubMed 34806501

Fadnes LT, Aas CF, Vold JH, Leiva RA, Ohldieck C, Chalabianloo F, Skurtveit S, Lygren OJ, Dalgård O, Vickerman P, Midgard H, Løberg EM, Johansson KA, INTRO-HCV Study Group (2021)
Integrated treatment of hepatitis C virus infection among people who inject drugs: A multicenter randomized controlled trial (INTRO-HCV)
PLoS Med, 18 (6), e1003653
DOI 10.1371/journal.pmed.1003653, PubMed 34061883

Hoff G, Botteri E, Huppertz-Hauss G, Kvamme JM, Holme Ø, Aabakken L, Dahler S, Medhus AW, Blomgren I, Sandvei P, Darre-Næss O, Kjellevold Ø, Seip B (2021)
The effect of train-the-colonoscopy-trainer course on colonoscopy quality indicators
Endoscopy, 53 (12), 1229-1234
DOI 10.1055/a-1352-4583, PubMed 33622001

Kristensen VA, Opheim R, Perminow G, Huppertz-Hauss G, Detlie TE, Lund C, Andersen S, Olsen BC, Johansen I, Medhus AW, Vatn S, Brackmann S, Olbjørn C, Rove J, Henriksen M, Løvlund EE, Bengtson MB, Aabrekk TB, Tønnessen T, Vikskjold FB, Yassin H, Frigstad SO, Hasund A, Høie O, Schmidt K et al. (2021)
Inflammatory bowel disease in South-Eastern Norway III (IBSEN III): a new population-based inception cohort study from South-Eastern Norway
Scand J Gastroenterol, 56 (8), 899-905
DOI 10.1080/00365521.2021.1922746, PubMed 34154494

Kylänpää L, Koskensalo V, Saarela A, Ejstrud P, Udd M, Lindström O, Rainio M, Tenca A, Halttunen J, Qvigstad G, Arnelo U, Fagerström N, Hauge T, Aabakken L, Grönroos J (2021)
Transpancreatic biliary sphincterotomy versus double guidewire in difficult biliary cannulation: a randomized controlled trial
Endoscopy, 53 (10), 1011-1019
DOI 10.1055/a-1327-2025, PubMed 33440441

Lorentzen J, Medhus AW, Hofsø D, Svanevik M, Seip B, Hjelmesæth J (2021)
Sleeve Gastrectomy Confers Higher Risk of Gastroesophageal Reflux Disease Than Gastric Bypass: A Randomized Controlled Trial From the Oseberg Reflux Working Group
Gastroenterology, 161 (6), 2044-2046.e4
DOI 10.1053/j.gastro.2021.08.021, PubMed 34419459

Lorvik KB, Meyer-Myklestad MH, Kushekar K, Handeland C, Medhus AW, Lund-Iversen M, Stiksrud B, Kvale D, Dyrhol-Riise AM, Taskén K, Reikvam DH (2021)
Enhanced Gut-Homing Dynamics and Pronounced Exhaustion of Mucosal and Blood CD4⁺ T Cells in HIV-Infected Immunological Non-Responders
Front Immunol, 12, 744155
DOI 10.3389/fimmu.2021.744155, PubMed 34691047

Midgard H, Ulstein K, Backe Ø, Foshaug T, Sørli H, Vennesland K, Nilssen D, Dahl EH, Finbråten AK, Wüsthoff L, Dalgard O (2021)
Hepatitis C treatment and reinfection surveillance among people who inject drugs in a low-threshold program in Oslo, Norway
Int J Drug Policy, 96, 103165
DOI 10.1016/j.drugpo.2021.103165, PubMed 33642182

Tjønnfjord SKV, Tjønnfjord EB, Konopski Z, Tjønnfjord GE (2021)
Successful Control of Hepatitis B Virus Reactivation following Restart of Ibrutinib in Chronic Lymphocytic Leukaemia
Case Rep Hematol, 2021, 1862446
DOI 10.1155/2021/1862446, PubMed 34721911

Tønnesen CJ, Hjelmesæth J, Hofsø D, Tonstad S, Hertel JK, Heggen E, Johnson LK, Mathisen TE, Kalager M, Wieszczy P, Medhus AW, Løberg M, Aabakken L, Bretthauer M (2021)
A novel intragastric balloon for treatment of obesity and type 2 diabetes. A two-center pilot trial
Scand J Gastroenterol, 57 (2), 232-238
DOI 10.1080/00365521.2021.1994641, PubMed 34714203

Vesterhus M, Wiencke K, Haukeland JW, Frigstad SO, Karlsen LN, Jørgensen KK, Folseraas T (2021)
[Diagnosis and treatment of autoimmune hepatitis]
Tidsskr Nor Laegeforen, 141 (10)
DOI 10.4045/tidsskr.20.1045, PubMed 34182737

Publications 2020

Berge ST, Safi N, Medhus AW, Sundhagen JO, Hisdal J, Kazmi SSH (2020)
Perioperative Microcirculatory Changes Detected with Gastroscopy Assisted Laser Doppler Flowmetry and Visible Light Spectroscopy in Patients with Median Arcuate Ligament Syndrome
Vasc Health Risk Manag, 16, 331-341
DOI 10.2147/VHRM.S252192, PubMed 32982262

Hauge T, Franco-Lie I, Løberg EM, Hauge T, Johnson E (2020)
Outcome after endoscopic treatment for dysplasia and superficial esophageal cancer - a cohort study
Scand J Gastroenterol, 55 (9), 1132-1138
DOI 10.1080/00365521.2020.1800813, PubMed 32748653

Haukeland JW, Småstuen MC, Pålsdatter PP, Ismail M, Konopski Z, Jørgensen KK, Lannerstedt H, Midgard H (2020)
Effect of gender on mortality and causes of death in cirrhotic patients with gastroesophageal varices. A retrospective study in Norway
PLoS One, 15 (3), e0230263
DOI 10.1371/journal.pone.0230263, PubMed 32163489

Kazmi SSH, Berge ST, Sahba M, Medhus AW, Sundhagen JO (2020)
A Short Series of Laparoscopic Mesenteric Bypasses for Chronic Mesenteric Ischemia
Vasc Health Risk Manag, 16, 87-97
DOI 10.2147/VHRM.S243264, PubMed 32256075

Lorentzen J, Medhus AW, Hertel JK, Borgeraas H, Karlsen TI, Kolotkin RL, Sandbu R, Sifrim D, Svanevik M, Hofsø D, Seip B, Hjelmesæth J (2020)
Erosive Esophagitis and Symptoms of Gastroesophageal Reflux Disease in Patients with Morbid Obesity with and without Type 2 Diabetes: a Cross-sectional Study
Obes Surg, 30 (7), 2667-2675
DOI 10.1007/s11695-020-04545-w, PubMed 32193740

Midgard H, Finbråten AK, Malme KB, Berg-Pedersen RM, Tanum L, Olsen IC, Bjørnestad R, Dalgard O (2020)
Opportunistic treatment of hepatitis C virus infection (OPPORTUNI-C): study protocol for a pragmatic stepped wedge cluster randomized trial of immediate versus outpatient treatment initiation among hospitalized people who inject drugs
Trials, 21 (1), 524
DOI 10.1186/s13063-020-04434-8, PubMed 32539853

Olesen SS, Nøjgaard C, Novovic S, Jensen NM, Nørregaard P, Dahl EE, Waage A, Hauge T, Barauskas G, Parhiala M, Laukkarinen J, Drewes AM (2020)
Pain and aetiological risk factors determine quality of life in patients with chronic pancreatitis, but a brick in the puzzle is missing
Pancreatology, 20 (7), 1347-1353
DOI 10.1016/j.pan.2020.09.004, PubMed 32948428

Olesen SS, Poulsen JL, Novovic S, Nøjgaard C, Kalaitzakis E, Jensen NM, Engjom T, Tjora E, Waage A, Hauge T, Haas SL, Vujasinovic M, Barauskas G, Pukitis A, Ozola-Zālīte I, Okhlobystin A, Parhiala M, Laukkarinen J, Drewes AM (2020)
Multiple risk factors for diabetes mellitus in patients with chronic pancreatitis: A multicentre study of 1117 cases
United European Gastroenterol J, 8 (4), 453-461
DOI 10.1177/2050640620901973, PubMed 32213024

Safi N, Johannessen HO, Medhus AW, Mala T, Kazmi SSH (2020)
Laser Doppler Flowmetry and Visible Light Spectroscopy of the Gastric Tube During Minimally Invasive Esophagectomy
Vasc Health Risk Manag, 16, 497-505
DOI 10.2147/VHRM.S269138, PubMed 33273819

Tjora E, Dimcevski G, Haas SL, Erchinger F, Vujasinovic M, Löhr M, Nøjgaard C, Novovic S, Zalite IO, Pukitis A, Hauge T, Waage A, Roug S, Kalaitzakis E, Lindkvist B, Olesen SS, Engjom T, Scandinavian Baltic Pancreatic Club (2020)
Patient reported exposure to smoking and alcohol abuse are associated with pain and other complications in patients with chronic pancreatitis
Pancreatology, 20 (5), 844-851
DOI 10.1016/j.pan.2020.05.001, PubMed 32507681

Publications 2019

Berge ST, Safi N, Medhus AW, Ånonsen K, Sundhagen JO, Hisdal J, Kazmi SSH (2019)
Gastroscopy assisted laser Doppler flowmetry and visible light spectroscopy in patients with chronic mesenteric ischemia
Scand J Clin Lab Invest, 79 (7), 541-549
DOI 10.1080/00365513.2019.1672084, PubMed 31560225

Bjørkhaug ST, Neupane SP, Bramness JG, Aanes H, Skar V, Medhus AW, Valeur J (2019)
Plasma cytokine levels in patients with chronic alcohol overconsumption: Relations to gut microbiota markers and clinical correlates
Alcohol, 85, 35-40
DOI 10.1016/j.alcohol.2019.10.002, PubMed 31610228

Bjørkhaug ST, Aanes H, Neupane SP, Bramness JG, Malvik S, Henriksen C, Skar V, Medhus AW, Valeur J (2019)
Characterization of gut microbiota composition and functions in patients with chronic alcohol overconsumption
Gut Microbes, 10 (6), 663-675
DOI 10.1080/19490976.2019.1580097, PubMed 30894059

Buer LCT, Moum BA, Cvancarova M, Warren DJ, Bolstad N, Medhus AW, Høivik ML (2019)
Real world data on effectiveness, safety and therapeutic drug monitoring of vedolizumab in patients with inflammatory bowel disease. A single center cohort
Scand J Gastroenterol, 54 (1), 41-48
DOI 10.1080/00365521.2018.1548646, PubMed 30650312

Dominguez-Munoz JE, Drewes AM, Lindkvist B, Ewald N, Czakó L, Rosendahl J, Löhr JM, HaPanEU/UEG Working Group (2019)
Corrigendum to "Recommendations from the United European Gastroenterology evidence-based guidelines for the diagnosis and therapy of chronic pancreatitis" [Pancreatology 18(8) (2018) 847-854]
Pancreatology, 20 (1), 148
DOI 10.1016/j.pan.2019.10.005, PubMed 31757740

Evensen H, Kristensen V, Larssen L, Sandstad O, Hauge T, Medhus AW (2019)
Outcome of peroral endoscopic myotomy (POEM) in treatment-naive patients. A systematic review
Scand J Gastroenterol, 54 (1), 1-7
DOI 10.1080/00365521.2018.1549271, PubMed 30650313

Evensen H, Medhus AW (2019)
Response to letter to the editor: 'Outcome of peroral endoscopic myotomy (POEM) in treatment-naive patients. A systematic review'
Scand J Gastroenterol, 54 (4), 520
DOI 10.1080/00365521.2019.1599416, PubMed 30978123

Fadnes LT, Aas CF, Vold JH, Ohldieck C, Leiva RA, Chalabianloo F, Skurtveit S, Lygren OJ, Dalgård O, Vickerman P, Midgard H, Løberg EM, Johansson KA, INTRO-HCV Study Group (2019)
Integrated treatment of hepatitis C virus infection among people who inject drugs: study protocol for a randomised controlled trial (INTRO-HCV)
BMC Infect Dis, 19 (1), 943
DOI 10.1186/s12879-019-4598-7, PubMed 31703669

Hajarizadeh B, Cunningham EB, Valerio H, Martinello M, Law M, Janjua NZ, Midgard H, Dalgard O, Dillon J, Hickman M, Bruneau J, Dore GJ, Grebely J (2019)
Hepatitis C reinfection after successful antiviral treatment among people who inject drugs: A meta-analysis
J Hepatol, 72 (4), 643-657
DOI 10.1016/j.jhep.2019.11.012, PubMed 31785345

Haraldsson E, Kylänpää L, Grönroos J, Saarela A, Toth E, Qvigstad G, Hult M, Lindström O, Laine S, Karjula H, Hauge T, Sadik R, Arnelo U (2019)
Macroscopic appearance of the major duodenal papilla influences bile duct cannulation: a prospective multicenter study by the Scandinavian Association for Digestive Endoscopy Study Group for ERCP
Gastrointest Endosc, 90 (6), 957-963
DOI 10.1016/j.gie.2019.07.014, PubMed 31326385

Olesen SS, Lisitskaya MV, Drewes AM, Novovic S, Nøjgaard C, Kalaitzakis E, Jensen NM, Engjom T, Erchinger F, Waage A, Hauge T, Haas SL, Vujasinovic M, Lindkvist B, Zviniene K, Pukitis A, Ozola-Zālīte I, Okhlobystin A, Parhiala M, Laukkarinen J, Frøkjær JB, Scandinavian Baltic Pancreatic Club (2019)
Pancreatic calcifications associate with diverse aetiological risk factors in patients with chronic pancreatitis: A multicentre study of 1500 cases
Pancreatology, 19 (7), 922-928
DOI 10.1016/j.pan.2019.08.009, PubMed 31462382

Olesen SS, Nøjgaard C, Poulsen JL, Haas SL, Vujasinovic M, Löhr M, Lindkvist B, Bexander L, Gulbinas A, Kalaitzakis E, Ebrahim M, Erchinger F, Engjom T, Roug S, Novovic S, Hauge T, Waage A, Laukkarinen J, Parhiala M, Pukitis A, Ozola-Zālīte I, Drewes AM, Scandinavian Baltic Pancreatic Club (2019)
Chronic Pancreatitis Is Characterized by Distinct Complication Clusters That Associate With Etiological Risk Factors
Am J Gastroenterol, 114 (4), 656-664
DOI 10.14309/ajg.0000000000000147, PubMed 30741740

Safreed-Harmon K, Blach S, Aleman S, Bollerup S, Cooke G, Dalgard O, Dillon JF, Dore GJ, Duberg AS, Grebely J, Boe Kielland K, Midgard H, Porter K, Razavi H, Tyndall M, Weis N, Lazarus JV (2019)
The Consensus Hepatitis C Cascade of Care: Standardized Reporting to Monitor Progress Toward Elimination
Clin Infect Dis, 69 (12), 2218-2227
DOI 10.1093/cid/ciz714, PubMed 31352481

Shridhar Gulati R, Wimalanathan T, Norheim Andersen S, Isaksen K, Lagging M, Midgard H, Moghaddam A, Dalgard O (2019)
The relationship between IFNL4 genotype and the rate of fibrosis in hepatitis C patients
Scand J Gastroenterol, 54 (9), 1172-1175
DOI 10.1080/00365521.2019.1643403, PubMed 31479286

Øvrehus ALH, Midgard H (2019)
How can we achieve WHO's elimination target for hepatitis C incidence?
Lancet Gastroenterol Hepatol, 4 (6), 415-417
DOI 10.1016/S2468-1253(19)30120-7, PubMed 30981687

Ånonsen K, Sahakyan MA, Kleive D, Waage A, Verbeke C, Hauge T, Buanes T, Edwin B, Labori KJ (2019)
Trends in management and outcome of cystic pancreatic lesions - analysis of 322 cases undergoing surgical resection
Scand J Gastroenterol, 54 (8), 1051-1057
DOI 10.1080/00365521.2019.1642379, PubMed 31322457

Publications 2018

Buer LCT, Høivik ML, Warren DJ, Medhus AW, Moum BA (2018)
Combining Anti-TNF-α and Vedolizumab in the Treatment of Inflammatory Bowel Disease: A Case Series
Inflamm Bowel Dis, 24 (5), 997-1004
DOI 10.1093/ibd/izx110, PubMed 29668901

Day E, Hellard M, Treloar C, Bruneau J, Martin NK, Øvrehus A, Dalgard O, Lloyd A, Dillon J, Hickman M, Byrne J, Litwin A, Maticic M, Bruggmann P, Midgard H, Norton B, Trooskin S, Lazarus JV, Grebely J, International Network on Hepatitis in Substance Users (INHSU) (2018)
Hepatitis C elimination among people who inject drugs: Challenges and recommendations for action within a health systems framework
Liver Int, 39 (1), 20-30
DOI 10.1111/liv.13949, PubMed 30157316

Dominguez-Munoz JE, Drewes AM, Lindkvist B, Ewald N, Czakó L, Rosendahl J, Löhr JM, HaPanEU/UEG Working Group (2018)
Recommendations from the United European Gastroenterology evidence-based guidelines for the diagnosis and therapy of chronic pancreatitis
Pancreatology, 18 (8), 847-854
DOI 10.1016/j.pan.2018.09.016, PubMed 30344091

Engjom T, Waage A, Hoem D, Kvamme JM, Hauge T, Dimcevski G (2018)
[Chronic pancreatitis – investigation and treatment]
Tidsskr Nor Laegeforen, 138 (3)
DOI 10.4045/tidsskr.17.0341, PubMed 29411568

European Study Group on Cystic Tumours of the Pancreas (2018)
European evidence-based guidelines on pancreatic cystic neoplasms
Gut, 67 (5), 789-804
DOI 10.1136/gutjnl-2018-316027, PubMed 29574408

Fraser H, Martin NK, Brummer-Korvenkontio H, Carrieri P, Dalgard O, Dillon J, Goldberg D, Hutchinson S, Jauffret-Roustide M, Kåberg M, Matser AA, Matičič M, Midgard H, Mravcik V, Øvrehus A, Prins M, Reimer J, Robaeys G, Schulte B, van Santen DK, Zimmermann R, Vickerman P, Hickman M (2018)
Model projections on the impact of HCV treatment in the prevention of HCV transmission among people who inject drugs in Europe
J Hepatol, 68 (3), 402-411
DOI 10.1016/j.jhep.2017.10.010, PubMed 29080808

Hicks SA, Riegler M, Pogorelov K, Anonsen KV, de Lange T, Johansen D, Jeppsson M, Randel KR, Eskeland S, Halvorsen P (2018)
Dissecting Deep Neural Networks for Better Medical Image Classification and Classification Understanding
COMP MED SY, 363-368
DOI 10.1109/CBMS.2018.00070

Holme Ø, Pedersen IB, Medhus AW, Aabakken L, Glomsaker T, Kvamme JM, Løberg M, Bretthauer M, Seip B, Kjellevold Ø, Jørgensen A, Furholm S, Hoff G, de Lange T (2018)
Endoscopy assistants influence the quality of colonoscopy
Endoscopy, 50 (9), 871-877
DOI 10.1055/s-0044-101706, PubMed 29444529

Høivik ML, Buer LCT, Cvancarova M, Warren DJ, Bolstad N, Moum BA, Medhus AW (2018)
Switching from originator to biosimilar infliximab - real world data of a prospective 18 months follow-up of a single-centre IBD population
Scand J Gastroenterol, 53 (6), 692-699
DOI 10.1080/00365521.2018.1463391, PubMed 29852793

Midgard H (2018)
Hepatitis C in drug addicts
Tidsskr. Nor. Laegeforen., 138 (13), 1243

Midgard H, Kielland KB, Dalgard O (2018)
[Elimination of hepatitis C is possible]
Tidsskr Nor Laegeforen, 138 (7)
DOI 10.4045/tidsskr.18.0099, PubMed 29663789

Midgard H, Kielland KB, Dalgard O (2018)
Elimination of Hepatitis C is possible
Tidsskr. Nor. Laegeforen., 138 (7), 630-633

Publications 2017

Aghdassi AA, Schneider A, Kahl M, Schütte K, Kuliaviene I, Salacone P, Lutz J, Tukiainen E, Simon P, Schauer B, Uomo G, Hauge T, Ceyhan GO (2017)
Analysis of lifestyle factors in patients with concomitant chronic pancreatitis and liver cirrhosis
Pancreatology, 17 (5), 698-705
DOI 10.1016/j.pan.2017.07.194, PubMed 28784575

Bjørkhaug ST, Skar V, Medhus AW, Tollisen A, Bramness JG, Valeur J (2017)
Chronic alcohol overconsumption may alter gut microbial metabolism: a retrospective study of 719 ¹³C-D-xylose breath test results
Microb Ecol Health Dis, 28 (1), 1301725
DOI 10.1080/16512235.2017.1301725, PubMed 28572752

Bjøro B, Dalgard O, Midgard H, Verbaan H, Småstuen MC, Rustøen T (2017)
Increased hope following successful treatment for hepatitis C infection
J Adv Nurs, 74 (3), 724-733
DOI 10.1111/jan.13487, PubMed 29082540

Buer L, Høivik ML, Medhus AW, Moum B (2017)
Does the Introduction of Biosimilars Change Our Understanding about Treatment Modalities for Inflammatory Bowel Disease?
Dig Dis, 35 (1-2), 74-82
DOI 10.1159/000449087, PubMed 28147370

Buer LC, Moum BA, Cvancarova M, Warren DJ, Medhus AW, Høivik ML (2017)
Switching from Remicade® to Remsima® is well Tolerated and Feasible: A Prospective, Open-label Study
J Crohns Colitis, 11 (3), 297-304
DOI 10.1093/ecco-jcc/jjw166, PubMed 27660339

Cunningham EB, Hajarizadeh B, Dalgard O, Amin J, Hellard M, Foster GR, Bruggmann P, Conway B, Backmund M, Robaeys G, Swan T, Marks PS, Quiene S, Applegate TL, Weltman M, Shaw D, Dunlop A, Bruneau J, Midgard H, Bourgeois S, Thurnheer MC, Dore GJ, Grebely J, ACTIVATE Study Group (2017)
Adherence to response-guided pegylated interferon and ribavirin for people who inject drugs with hepatitis C virus genotype 2/3 infection: the ACTIVATE study
BMC Infect Dis, 17 (1), 420
DOI 10.1186/s12879-017-2517-3, PubMed 28610605

Grebely J, Bruneau J, Lazarus JV, Dalgard O, Bruggmann P, Treloar C, Hickman M, Hellard M, Roberts T, Crooks L, Midgard H, Larney S, Degenhardt L, Alho H, Byrne J, Dillon JF, Feld JJ, Foster G, Goldberg D, Lloyd AR, Reimer J, Robaeys G, Torrens M, Wright N, Maremmani I et al. (2017)
Research priorities to achieve universal access to hepatitis C prevention, management and direct-acting antiviral treatment among people who inject drugs
Int J Drug Policy, 47, 51-60
DOI 10.1016/j.drugpo.2017.05.019, PubMed 28683982

Grebely J, Dalgard O, Cunningham EB, Hajarizadeh B, Foster GR, Bruggmann P, Conway B, Backmund M, Robaeys G, Swan T, Amin J, Marks PS, Quiene S, Applegate TL, Weltman M, Shaw D, Dunlop A, Hellard M, Bruneau J, Midgard H, Bourgeois S, Staehelin C, Dore GJ, ACTIVATE Study Group (2017)
Efficacy of response-guided directly observed pegylated interferon and self-administered ribavirin for people who inject drugs with hepatitis C virus genotype 2/3 infection: The ACTIVATE study
Int J Drug Policy, 47, 177-186
DOI 10.1016/j.drugpo.2017.05.020, PubMed 28624134

Hauge T, Ånonsen KV, Buanes T (2017)
Management of Pancreatic Cysts (PC)- Based on Cumulative Knowledge
EC Gastroenterology and Digestive System, 02 (2017), s. 437-39
PublikaID 402

Hellum M, Franco-Lie I, Øvstebø R, Hauge T, Henriksson CE (2017)
The effect of corn trypsin inhibitor, anti-tissue factor pathway inhibitor antibodies and phospholipids on microvesicle-associated thrombin generation in patients with pancreatic cancer and healthy controls
PLoS One, 12 (9), e0184579
DOI 10.1371/journal.pone.0184579, PubMed 28910348

Löhr JM, Dominguez-Munoz E, Rosendahl J, Besselink M, Mayerle J, Lerch MM, Haas S, Akisik F, Kartalis N, Iglesias-Garcia J, Keller J, Boermeester M, Werner J, Dumonceau JM, Fockens P, Drewes A, Ceyhan G, Lindkvist B, Drenth J, Ewald N, Hardt P, de Madaria E, Witt H, Schneider A, Manfredi R et al. (2017)
United European Gastroenterology evidence-based guidelines for the diagnosis and therapy of chronic pancreatitis (HaPanEU)
United European Gastroenterol J, 5 (2), 153-199
DOI 10.1177/2050640616684695, PubMed 28344786

Midgard H, Hajarizadeh B, Cunningham EB, Conway B, Backmund M, Bruggmann P, Bruneau J, Bourgeois S, Dunlop A, Foster GR, Hellard M, Robaeys G, Thurnheer MC, Weltman M, Amin J, Marks PS, Quiene S, Dore GJ, Dalgard O, Grebely J, ACTIVATE Study Group (2017)
Changes in risk behaviours during and following treatment for hepatitis C virus infection among people who inject drugs: The ACTIVATE study
Int J Drug Policy, 47, 230-238
DOI 10.1016/j.drugpo.2017.05.040, PubMed 28633998

Ånonsen KV, Fagerland MW, Edwin B, Labori KJ, Kure EH, Hauge T, Buanes T (2017)
Cyst fluid CEA concentration discriminates between benign and premalignant/malignant pancreatic cystic lesions. A prospective cohort study. Short title: Diagnostic yield of pancreatic cyst fluid CEA analysis
EC Gastroenterology and Digestive System, 02, S. 426-436
PublikaID 401

Publications 2016

Knatten CK, Fjeld JG, Medhus AW, Pripp AH, Fyhn TJ, Aabakken L, Kjosbakken H, Edwin B, Emblem R, Bjørnland K (2016)
Preoperative liquid gastric emptying rate does not predict outcome after fundoplication
J Pediatr Surg, 52 (4), 540-543
DOI 10.1016/j.jpedsurg.2016.09.068, PubMed 28277299

Knudsen MD, de Lange T, Botteri E, Nguyen DH, Evensen H, Steen CB, Hoff G, Bernklev T, Hjartåker A, Berstad P (2016)
Favorable lifestyle before diagnosis associated with lower risk of screen-detected advanced colorectal neoplasia
World J Gastroenterol, 22 (27), 6276-86
DOI 10.3748/wjg.v22.i27.6276, PubMed 27468217

Midgard H, Bjøro B, Mæland A, Konopski Z, Kileng H, Damås JK, Paulsen J, Heggelund L, Sandvei PK, Ringstad JO, Karlsen LN, Stene-Johansen K, Pettersson JH, Dorenberg DH, Dalgard O (2016)
Hepatitis C reinfection after sustained virological response
J Hepatol, 64 (5), 1020-1026
DOI 10.1016/j.jhep.2016.01.001, PubMed 26780289

Midgard H, Bramness JG, Skurtveit S, Haukeland JW, Dalgard O (2016)
Hepatitis C Treatment Uptake among Patients Who Have Received Opioid Substitution Treatment: A Population-Based Study
PLoS One, 11 (11), e0166451
DOI 10.1371/journal.pone.0166451, PubMed 27846264

Midgard H, Weir A, Palmateer N, Lo Re V, Pineda JA, Macías J, Dalgard O (2016)
HCV epidemiology in high-risk groups and the risk of reinfection
J Hepatol, 65 (1 Suppl), S33-S45
DOI 10.1016/j.jhep.2016.07.012, PubMed 27641987

Publications 2015

Anonsen KV, Buanes T, Rosok BI, Hauge T, Edwin B (2015)
Outcome of Laparoscopic Surgery in Patients with Cystic Lesions in the Distal Pancreas
J. Pancreas, 16 (3), 266-270

Hauge T, Hauge PW, Warloe T, Drolsum A, Johansen C, Viktil E, Aabakken L, Buanes T, Konopski Z (2015)
Randomised controlled trial of temoporfin photodynamic therapy plus chemotherapy in nonresectable biliary carcinoma--PCS Nordic study
Photodiagnosis Photodyn Ther, 13, 330-333
DOI 10.1016/j.pdpdt.2015.09.004, PubMed 26415549

Løvik A, Skodje G, Bratlie J, Brottveit M, Lundin KE (2015)
Diet adherence and gluten exposure in coeliac disease and self-reported non-coeliac gluten sensitivity
Clin Nutr, 36 (1), 275-280
DOI 10.1016/j.clnu.2015.11.017, PubMed 26714791

Otterdal K, Haukeland JW, Yndestad A, Dahl TB, Holm S, Segers FM, Gladhaug IP, Konopski Z, Damås JK, Halvorsen B, Aukrust P (2015)
Increased Serum Levels of LIGHT/TNFSF14 in Nonalcoholic Fatty Liver Disease: Possible Role in Hepatic Inflammation
Clin Transl Gastroenterol, 6 (7), e95
DOI 10.1038/ctg.2015.23, PubMed 26133108