Jan Ivar Pedersen

  • Professor emeritus
  • +47 908 10 845

Publications 2017

Pedersen JI, Kirkhus B (2017)
Do SFAs in cheese have properties different from those in other foods?
Am J Clin Nutr, 105 (4), 1017
DOI 10.3945/ajcn.116.147686, PubMed 28373313

Publications 2015

Heggen E, Kirkhus B, Pedersen JI, Tonstad S (2015)
Effects of margarine enriched with plant sterol esters from rapeseed and tall oils on markers of endothelial function, inflammation and hemostasis
Scand J Clin Lab Invest, 75 (2), 189-92
DOI 10.3109/00365513.2014.992040, PubMed 25553599

Publications 2012

Laake I, Carlsen MH, Pedersen JI, Weiderpass E, Selmer R, Kirkhus B, Thune I, Veierød MB (2012)
Intake of trans fatty acids from partially hydrogenated vegetable and fish oils and ruminant fat in relation to cancer risk
Int J Cancer, 132 (6), 1389-403
DOI 10.1002/ijc.27737, PubMed 22821174

Pedersen JI, Norum KR, James PT, Brouwer IA, Katan MB, Clarke R, Elmadfa I, Kris-Etherton PM, Kromhout D, Margetts BM, Mensink RP, Rayner M, Uusitupa M (2012)
The importance of reducing SFA intake to limit CHD risk Response
Br. J. Nutr., 107 (3), 452-454
DOI 10.1017/S0007114511006593

Pedersen JI, Norum KR, James PT, Brouwer IA, Katan MB, Clarke R, Elmadfa I, Kris-Etherton PM, Kromhout D, Margetts BM, Mensink RP, Rayner M, Uusitupa M (2012)
No scientific support for linking dietary saturated fat to CHD Response
Br. J. Nutr., 107 (3), 458-460
DOI 10.1017/S0007114511006611

Publications 2011

Laake I, Pedersen JI, Selmer R, Kirkhus B, Lindman AS, Tverdal A, Veierød MB (2011)
A prospective study of intake of trans-fatty acids from ruminant fat, partially hydrogenated vegetable oils, and marine oils and mortality from CVD
Br J Nutr, 108 (4), 743-54
DOI 10.1017/S0007114511005897, PubMed 22059639

Pedersen JI, James PT, Brouwer IA, Clarke R, Elmadfa I, Katan MB, Kris-Etherton PM, Kromhout D, Margetts BM, Mensink RP, Norum KR, Rayner M, Uusitupa M (2011)
The importance of reducing SFA to limit CHD
Br J Nutr, 106 (7), 961-3
DOI 10.1017/S000711451100506X, PubMed 21906408

Publications 2010

Lindman AS, Veierød MB, Tverdal A, Pedersen JI, Selmer R (2010)
Nonfasting triglycerides and risk of cardiovascular death in men and women from the Norwegian Counties Study
Eur J Epidemiol, 25 (11), 789-98
DOI 10.1007/s10654-010-9501-1, PubMed 20890636

Malde MK, Bügel S, Kristensen M, Malde K, Graff IE, Pedersen JI (2010)
Calcium from salmon and cod bone is well absorbed in young healthy men: a double-blinded randomised crossover design
Nutr Metab (Lond), 7, 61
DOI 10.1186/1743-7075-7-61, PubMed 20646299

Malde MK, Graff IE, Siljander-Rasi H, Venäläinen E, Julshamn K, Pedersen JI, Valaja J (2010)
Fish bones--a highly available calcium source for growing pigs
J Anim Physiol Anim Nutr (Berl), 94 (5), e66-76
DOI 10.1111/j.1439-0396.2009.00979.x, PubMed 20487094

Ulven SM, Kirkhus B, Lamglait A, Basu S, Elind E, Haider T, Berge K, Vik H, Pedersen JI (2010)
Metabolic effects of krill oil are essentially similar to those of fish oil but at lower dose of EPA and DHA, in healthy volunteers
Lipids, 46 (1), 37-46
DOI 10.1007/s11745-010-3490-4, PubMed 21042875

Publications 2009

Heggen E, Granlund L, Pedersen JI, Holme I, Ceglarek U, Thiery J, Kirkhus B, Tonstad S (2009)
Plant sterols from rapeseed and tall oils: effects on lipids, fat-soluble vitamins and plant sterol concentrations
Nutr Metab Cardiovasc Dis, 20 (4), 258-65
DOI 10.1016/j.numecd.2009.04.001, PubMed 19748247

Selmer R, Lindman AS, Tverdal A, Pedersen JI, Veierød MB, Njølstad I (2009)
[Limitations of data for NORRISK]
Tidsskr Nor Laegeforen, 129 (8), 771
DOI 10.4045/tidsskr.09.0203, PubMed 19373312

Wennersberg MH, Smedman A, Turpeinen AM, Retterstøl K, Tengblad S, Lipre E, Aro A, Mutanen P, Seljeflot I, Basu S, Pedersen JI, Mutanen M, Vessby B (2009)
Dairy products and metabolic effects in overweight men and women: results from a 6-mo intervention study
Am J Clin Nutr, 90 (4), 960-8
DOI 10.3945/ajcn.2009.27664, PubMed 19710195

Publications 2008

Biong AS, Rebnord HM, Fimreite RL, Trygg KU, Ringstad J, Thelle DS, Pedersen JI (2008)
Intake of dairy fat and dairy products, and risk of myocardial infarction: a case-control study
Int J Food Sci Nutr, 59 (2), 155-65
DOI 10.1080/09637480701532521, PubMed 17886080

Pedersen JI (2008)
Vitamin D requirement and setting recommendation levels - current Nordic view
Nutr Rev, 66 (10 Suppl 2), S165-9
DOI 10.1111/j.1753-4887.2008.00101.x, PubMed 18844844

Selmer R, Lindman AS, Tverdal A, Pedersen JI, Njølstad I, Veierød MB (2008)
[Model for estimation of cardiovascular risk in Norway]
Tidsskr Nor Laegeforen, 128 (3), 286-90
PubMed 18264151

Publications 2007

Lindman AS, Veierød MB, Pedersen JI, Tverdal A, Njølstad I, Selmer R (2007)
The ability of the SCORE high-risk model to predict 10-year cardiovascular disease mortality in Norway
Eur J Cardiovasc Prev Rehabil, 14 (4), 501-7
DOI 10.1097/HJR.0b013e328011490a, PubMed 17667638

Lockheart MS, Steffen LM, Rebnord HM, Fimreite RL, Ringstad J, Thelle DS, Pedersen JI, Jacobs DR (2007)
Dietary patterns, food groups and myocardial infarction: a case-control study
Br J Nutr, 98 (2), 380-7
DOI 10.1017/S0007114507701654, PubMed 17391555

Strand S, Hjuler ML, Torsvik R, Pedersen JI, Madland MV, Austad T (2007)
Wettability of chalk: impact of silica, clay content and mechanical properties
Petrol. Geosci., 13 (1), 69-80
DOI 10.1144/1354-079305-696

Publications 2006

Becker W, Alexander J, Andersen S, Aro A, Fogelholm M, Lyhne N, Meltzer HM, Pedersen AN, Pedersen JI, Thorsdottir I (2006)
[Nordic nutrition recommendations]
Ugeskr Laeger, 168 (1), 76-7; author reply 77
PubMed 16393575

Biong AS, Berstad P, Pedersen JI (2006)
Biomarkers for intake of dairy fat and dairy products
Eur. J. Lipid Sci. Technol., 108 (10), 827-834
DOI 10.1002/ejlt.200600044

Biong AS, Veierød MB, Ringstad J, Thelle DS, Pedersen JI (2006)
Intake of milk fat, reflected in adipose tissue fatty acids and risk of myocardial infarction: a case-control study
Eur J Clin Nutr, 60 (2), 236-44
DOI 10.1038/sj.ejcn.1602307, PubMed 16267503

Borch-Iohnsen B, Pedersen JI, Henriksen T (2006)
[Should pregnant women take iron supplementation?]
Tidsskr Nor Laegeforen, 126 (16), 2133-5
PubMed 16932786

Johansson L, Borgejordet A, Pedersen JI (2006)
[Trans fatty acids in the Norwegian diet]
Tidsskr Nor Laegeforen, 126 (6), 760-3
PubMed 16541169

Lindman AS, Selmer R, Tverdal A, Pedersen JI, Eggen AE, Veierød MB (2006)
The SCORE risk model applied to recent population surveys in Norway compared to observed mortality in the general population
Eur J Cardiovasc Prev Rehabil, 13 (5), 731-7
DOI 10.1097/01.hjr.0000224486.18468.f4, PubMed 17001212

Pedersen JI (2006)
[Does alpha-linolenic acid prevent cardiac death?]
Tidsskr Nor Laegeforen, 126 (21), 2784
PubMed 17086215

Publications 2005

Granlund L, Larsen LN, Nebb HI, Pedersen JI (2005)
Effects of structural changes of fatty acids on lipid accumulation in adipocytes and primary hepatocytes
Biochim Biophys Acta, 1687 (1-3), 23-30
DOI 10.1016/j.bbalip.2004.11.009, PubMed 15708350

Granlund L, Pedersen JI, Nebb HI (2005)
Impaired lipid accumulation by trans10, cis12 CLA during adipocyte differentiation is dependent on timing and length of treatment
Biochim Biophys Acta, 1687 (1-3), 11-22
DOI 10.1016/j.bbalip.2004.08.018, PubMed 15708349

Lindman AS, Pedersen JI, Arnesen H, Hjerkinn EM, Seljeflot I (2005)
Association between the factor VII haplotype containing the -402A allele and myocardial infarction in a population of elderly men at high risk for coronary heart disease
Thromb Haemost, 94 (1), 226-7
PubMed 16116695

Lindman AS, Pedersen JI, Hjerkinn EM, Veierød MB, Kavlie A, Arnesen H, Seljeflot I (2005)
The influence of the -401G/T and -402G/A polymorphisms of the coagulation FVII promoter on plasma levels of FVII
Thromb Res, 116 (4), 313-20
DOI 10.1016/j.thromres.2004.08.031, PubMed 16038716

Pedersen JI, Muller H, Seljeflot I, Kirkhus B (2005)
Palm oil versus hydrogenated soybean oil: effects on serum lipids and plasma haemostatic variables
Asia Pac J Clin Nutr, 14 (4), 348-57
PubMed 16326641

Publications 2004

Biong AS, Müller H, Seljeflot I, Veierød MB, Pedersen JI (2004)
A comparison of the effects of cheese and butter on serum lipids, haemostatic variables and homocysteine
Br J Nutr, 92 (5), 791-7
DOI 10.1079/bjn20041257, PubMed 15533268

Lindman AS, Pedersen JI, Arnesen H, Hjerkinn EM, Veierød MB, Prydz H, Seljeflot I (2004)
Coagulation factor VII, R353Q polymorphism, and serum choline-containing phospholipids in males at high risk for coronary heart disease
Thromb Res, 113 (1), 57-65
DOI 10.1016/j.thromres.2004.02.001, PubMed 15081566

Lindman AS, Pedersen JI, Hjerkinn EM, Arnesen H, Veierød MB, Ellingsen I, Seljeflot I (2004)
The effects of long-term diet and omega-3 fatty acid supplementation on coagulation factor VII and serum phospholipids with special emphasis on the R353Q polymorphism of the FVII gene
Thromb Haemost, 91 (6), 1097-104
DOI 10.1160/TH03-12-0773, PubMed 15175795

Meltzer HM, Haugen M, Alexander J, Pedersen JI (2004)
[Vitamin and minerals supplements--required for good health?]
Tidsskr Nor Laegeforen, 124 (12), 1646-9
PubMed 15229713

Pedersen JI, Tverdal A, Kirkhus B (2004)
[Diet changes and the rise and fall of cardiovascular disease mortality in Norway]
Tidsskr Nor Laegeforen, 124 (11), 1532-6
PubMed 15195160

Publications 2003

Berstad P, Seljeflot I, Veierød MB, Hjerkinn EM, Arnesen H, Pedersen JI (2003)
Supplementation with fish oil affects the association between very long-chain n-3 polyunsaturated fatty acids in serum non-esterified fatty acids and soluble vascular cell adhesion molecule-1
Clin Sci (Lond), 105 (1), 13-20
DOI 10.1042/CS20020349, PubMed 12589702

Granlund L, Juvet LK, Pedersen JI, Nebb HI (2003)
Trans10, cis12-conjugated linoleic acid prevents triacylglycerol accumulation in adipocytes by acting as a PPARgamma modulator
J Lipid Res, 44 (8), 1441-52
DOI 10.1194/jlr.M300120-JLR200, PubMed 12754280

Lindman AS, Müller H, Seljeflot I, Prydz H, Veierød M, Pedersen JI (2003)
Effects of dietary fat quantity and composition on fasting and postprandial levels of coagulation factor VII and serum choline-containing phospholipids
Br J Nutr, 90 (2), 329-36
DOI 10.1079/bjn2003911, PubMed 12908893

Müller H, Lindman AS, Blomfeldt A, Seljeflot I, Pedersen JI (2003)
A diet rich in coconut oil reduces diurnal postprandial variations in circulating tissue plasminogen activator antigen and fasting lipoprotein (a) compared with a diet rich in unsaturated fat in women
J Nutr, 133 (11), 3422-7
DOI 10.1093/jn/133.11.3422, PubMed 14608053

Müller H, Lindman AS, Brantsaeter AL, Pedersen JI (2003)
The serum LDL/HDL cholesterol ratio is influenced more favorably by exchanging saturated with unsaturated fat than by reducing saturated fat in the diet of women
J Nutr, 133 (1), 78-83
DOI 10.1093/jn/133.1.78, PubMed 12514271

Pedersen JI, Kirkhus B, Müller H (2003)
Serum cholesterol predictive equations in product development
Eur J Med Res, 8 (8), 325-31
PubMed 12915327

Publications 2002

Førli L, Pedersen JI, Bjørtuft O, Blomhoff R, Kofstad J, Boe J (2002)
Vitamins A and E in serum in relation to weight and lung function in patients with advanced pulmonary disease
Int J Vitam Nutr Res, 72 (6), 360-8
DOI 10.1024/0300-9831.72.6.360, PubMed 12596500

Meyer HE, Smedshaug GB, Kvaavik E, Falch JA, Tverdal A, Pedersen JI (2002)
Can vitamin D supplementation reduce the risk of fracture in the elderly? A randomized controlled trial
J Bone Miner Res, 17 (4), 709-15
DOI 10.1359/jbmr.2002.17.4.709, PubMed 11918228

Yli-Jama P, Meyer HE, Ringstad J, Pedersen JI (2002)
Serum free fatty acid pattern and risk of myocardial infarction: a case-control study
J Intern Med, 251 (1), 19-28
DOI 10.1046/j.1365-2796.2002.00922.x, PubMed 11851861

Yli-Jama P, Seljeflot I, Meyer HE, Hjerkinn EM, Arnesen H, Pedersen JI (2002)
Serum non-esterified very long-chain PUFA are associated with markers of endothelial dysfunction
Atherosclerosis, 164 (2), 275-81
DOI 10.1016/s0021-9150(02)00067-9, PubMed 12204798

Publications 2001

Førli L, Pedersen JI, Bjørtuft O, Vatn M, Boe J (2001)
Dietary support to underweight patients with end-stage pulmonary disease assessed for lung transplantation
Respiration, 68 (1), 51-7
DOI 10.1159/000050463, PubMed 11223731

Müller H, Kirkhus B, Pedersen JI (2001)
Serum cholesterol predictive equations with special emphasis on trans and saturated fatty acids. an analysis from designed controlled studies
Lipids, 36 (8), 783-91
DOI 10.1007/s11745-001-0785-6, PubMed 11592728

Müller H, Seljeflot I, Solvoll K, Pedersen JI (2001)
Partially hydrogenated soybean oil reduces postprandial t-PA activity compared with palm oil
Atherosclerosis, 155 (2), 467-76
DOI 10.1016/s0021-9150(00)00591-8, PubMed 11254919

Pedersen JI (2001)
More on trans fatty acids
Br J Nutr, 85 (3), 249-50
DOI 10.1079/bjn2000286, PubMed 11299071

Yli-Jama P, Haugen TS, Rebnord HM, Ringstad J, Pedersen JI (2001)
Selective mobilisation of fatty acids from human adipose tissue
Eur J Intern Med, 12 (2), 107-115
DOI 10.1016/s0953-6205(01)00119-4, PubMed 11297913

Publications 2000

Almendingen K, Meltzer HM, Pedersen JI, Nilsen BN, Ellekjaer M (2000)
Near infrared spectroscopy-a potentially useful method for rapid determination of fat and protein content in homogenized diets
Eur J Clin Nutr, 54 (1), 20-3
DOI 10.1038/sj.ejcn.1600886, PubMed 10694767

Førli L, Pedersen JI, Bjørtuft, Vatn M, Kofstad J, Boe J (2000)
Serum amino acids in relation to nutritional status, lung function and energy intake in patients with advanced pulmonary disease
Respir Med, 94 (9), 868-74
DOI 10.1053/rmed.2000.0830, PubMed 11001078

Granlund L, Larsen LN, Christiansen EN, Pedersen JI (2000)
Absorption of very-long-chain saturated fatty acids in totally hydrogenated fish oil
Br J Nutr, 84 (5), 681-8
PubMed 11177181

Hay G, Pedersen JI, Klepp KI (2000)
[How to achieve an optimal intake of vitamin D in children]
Tidsskr Nor Laegeforen, 120 (2), 245-8
PubMed 10851924

Meyer HE, Tverdal A, Falch JA, Pedersen JI (2000)
Factors associated with mortality after hip fracture
Osteoporos Int, 11 (3), 228-32
DOI 10.1007/s001980050285, PubMed 10824238

Pedersen JI, Ringstad J, Almendingen K, Haugen TS, Stensvold I, Thelle DS (2000)
Adipose tissue fatty acids and risk of myocardial infarction--a case-control study
Eur J Clin Nutr, 54 (8), 618-25
DOI 10.1038/sj.ejcn.1601064, PubMed 10951510

Publications 1998

Almendingen K, Trygg K, Pedersen JI (1998)
An assessment of the use of simple methods to predict individual energy intakes for intervention studies
Eur J Clin Nutr, 52 (1), 54-9
DOI 10.1038/sj.ejcn.1600515, PubMed 9481533

Müller H, Jordal O, Kierulf P, Kirkhus B, Pedersen JI (1998)
Replacement of partially hydrogenated soybean oil by palm oil in margarine without unfavorable effects on serum lipoproteins
Lipids, 33 (9), 879-87
DOI 10.1007/s11745-998-0284-9, PubMed 9778135

Müller H, Jordal O, Seljeflot I, Kierulf P, Kirkhus B, Ledsaak O, Pedersen JI (1998)
Effect on plasma lipids and lipoproteins of replacing partially hydrogenated fish oil with vegetable fat in margarine
Br J Nutr, 80 (3), 243-51
DOI 10.1017/S0007114598001299, PubMed 9875064

Pedersen JI, Johansson L, Thelle DS (1998)
[Trans-fatty acids and health]
Tidsskr Nor Laegeforen, 118 (22), 3474-80
PubMed 9800499

Tell GS, Vollset SE, Lande B, Pedersen JI, Løken EB, Jacobsen BK (1998)
[Folate and health--new knowledge and new recommendation]
Tidsskr Nor Laegeforen, 118 (20), 3155-60
PubMed 9760860

Publications 1997

Meyer HE, Pedersen JI, Løken EB, Tverdal A (1997)
Dietary factors and the incidence of hip fracture in middle-aged Norwegians. A prospective study
Am J Epidemiol, 145 (2), 117-23
DOI 10.1093/oxfordjournals.aje.a009082, PubMed 9006308

Pedersen JI, Eggertsen G, Hellman U, Andersson U, Björkhem I (1997)
Molecular cloning and expression of cDNA encoding 3alpha,7alpha,12alpha-trihydroxy-5beta-chole stanoyl-CoA oxidase from rabbit liver
J Biol Chem, 272 (29), 18481-9
DOI 10.1074/jbc.272.29.18481, PubMed 9218493

Publications 1996

Almendingen K, Seljeflot I, Sandstad B, Pedersen JI (1996)
Effects of partially hydrogenated fish oil, partially hydrogenated soybean oil, and butter on hemostatic variables in men
Arterioscler Thromb Vasc Biol, 16 (3), 375-80
DOI 10.1161/01.atv.16.3.375, PubMed 8630662

Halvorsen B, Almendingen K, Nenseter MS, Pedersen JI, Christiansen EN (1996)
Effects of partially hydrogenated fish oil, partially hydrogenated soybean oil and butter on the susceptibility of low density lipoprotein to oxidative modification in men
Eur J Clin Nutr, 50 (6), 364-70
PubMed 8793417

Meyer HE, Tverdal A, Henriksen C, Pedersen JI, Falch JA (1996)
[Risk factors of femoral neck fractures in Oslo]
Tidsskr Nor Laegeforen, 116 (22), 2656-9
PubMed 8928141

Pedersen JI, Veggan T, Björkhem I (1996)
Substrate stereospecificity in oxidation of (25S)-3 alpha, 7 alpha, 12 alpha-trihydroxy-5 beta-cholestanoyl-CoA by peroxisomal trihydroxy-5 beta-cholestanoyl-CoA oxidase
Biochem Biophys Res Commun, 224 (1), 37-42
DOI 10.1006/bbrc.1996.0981, PubMed 8694830

Publications 1995

Almendingen K, Jordal O, Kierulf P, Sandstad B, Pedersen JI (1995)
Effects of partially hydrogenated fish oil, partially hydrogenated soybean oil, and butter on serum lipoproteins and Lp[a] in men
J Lipid Res, 36 (6), 1370-84
PubMed 7666013

Henriksen C, Brunvand L, Stoltenberg C, Trygg K, Haug E, Pedersen JI (1995)
Diet and vitamin D status among pregnant Pakistani women in Oslo
Eur J Clin Nutr, 49 (3), 211-8
PubMed 7774537

Ljunghall S, Charles P, Falch J, Haug E, Melhus H, Mellström D, Mosekilde L, Pedersen JI, Sørensen OH, Toss G (1995)
[Vitamin D and osteoporosis]
Nord Med, 110 (10), 253-7
PubMed 7478964

Meyer HE, Henriksen C, Falch JA, Pedersen JI, Tverdal A (1995)
Risk factors for hip fracture in a high incidence area: a case-control study from Oslo, Norway
Osteoporos Int, 5 (4), 239-46
DOI 10.1007/BF01774013, PubMed 7492862

Nilsson A, Farrants AK, Nesland JM, Finstad HS, Pedersen JI (1995)
Potentiating effects of clofibric acid on the differentiation of HL-60 human promyelocytic leukemia cells induced by retinoids
Eur J Cell Biol, 67 (4), 379-85
PubMed 8521878

Publications 1993

Farrants AK, Nilsson A, Pedersen JI (1993)
Human hepatoblastoma cells (HepG2) and rat hepatoma cells are defective in important enzyme activities in the oxidation of the C27 steroid side chain in bile acid formation
J Lipid Res, 34 (12), 2041-50
PubMed 8301225

Farrants AK, Nilsson A, Trøen G, Blomhoff R, Pedersen JI (1993)
The effect of retinoids and clofibric acid on the peroxisomal oxidation of palmitic acid and of 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoic acid in rat and rabbit hepatocytes
Biochim Biophys Acta, 1168 (1), 100-7
DOI 10.1016/0005-2760(93)90272-b, PubMed 8504135

Pedersen JI (1993)
Peroxisomal oxidation of the steroid side chain in bile acid formation
Biochimie, 75 (3-4), 159-65
DOI 10.1016/0300-9084(93)90073-2, PubMed 8507677

Publications 1992

Nes M, Sem SW, Pedersen JI, Trygg K (1992)
Dietary intake in a group of independent-living old people in Oslo
Aging (Milano), 4 (2), 145-56
DOI 10.1007/BF03324084, PubMed 1504131

Publications 1991

Kase BF, Pedersen JI, Wathne KO, Gustafsson J, Björkhem I (1991)
Importance of peroxisomes in the formation of chenodeoxycholic acid in human liver. Metabolism of 3 alpha,7 alpha-dihydroxy-5 beta-cholestanoic acid in Zellweger syndrome
Pediatr Res, 29 (1), 64-9
DOI 10.1203/00006450-199101000-00013, PubMed 2000261

Osmundsen H, Bremer J, Pedersen JI (1991)
Metabolic aspects of peroxisomal beta-oxidation
Biochim Biophys Acta, 1085 (2), 141-58
DOI 10.1016/0005-2760(91)90089-z, PubMed 1892883

Pedersen JI (1991)
Nordic recommended dietary allowances for omega 3 and omega 6 fatty acids
World Rev Nutr Diet, 66, 161-4
DOI 10.1159/000419287, PubMed 1905085

Watkins PA, Ferrell EV, Pedersen JI, Hoefler G (1991)
Peroxisomal fatty acid beta-oxidation in HepG2 cells
Arch Biochem Biophys, 289 (2), 329-36
DOI 10.1016/0003-9861(91)90419-j, PubMed 1654856

Publications 1990

Dueland S, Blomhoff R, Pedersen JI (1990)
Uptake and degradation of vitamin D binding protein and vitamin D binding protein-actin complex in vivo in the rat
Biochem J, 267 (3), 721-5
DOI 10.1042/bj2670721, PubMed 2339982

Ostlund Farrants AK, Björkhem I, Pedersen JI (1990)
Differential induction of peroxisomal oxidation of palmitic acid and 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoic acid in rat liver
Biochim Biophys Acta, 1046 (2), 173-7
PubMed 2223856

Publications 1989

Ostlund Farrants AK, Björkhem I, Pedersen JI (1989)
Identification of 3 alpha, 7 alpha, 12 alpha-trihydroxy-5 beta-cholest-24-enoic acid as an intermediate in the peroxisomal conversion of 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoic acid to cholic acid
Biochim Biophys Acta, 1002 (2), 198-202
DOI 10.1016/0005-2760(89)90287-7, PubMed 2930767

Pedersen JI (1989)
Nutrition and coronary heart disease
Acta Cardiol, 44 (6), 468-9
PubMed 2626909

Pedersen JI, Oftebro H, Björkhem I (1989)
Reconstitution of C27-steroid 26-hydroxylase activity from bovine brain mitochondria
Biochem Int, 18 (3), 615-22
PubMed 2764966

Publications 1988

Hagenfeldt Y, Pedersen JI, Björkhem I (1988)
Properties of guinea-pig kidney 25-hydroxyvitamin D3 1 alpha-hydroxylase assayed by isotope dilution-mass spectrometry
Biochem J, 250 (2), 521-6
DOI 10.1042/bj2500521, PubMed 3281665

Nes M, Sem SW, Rousseau B, Bjørneboe GE, Engedal K, Trygg K, Pedersen JI (1988)
Dietary intakes and nutritional status of old people with dementia living at home in Oslo
Eur J Clin Nutr, 42 (7), 581-93
PubMed 3265665

Pedersen JI, Hagenfeldt Y, Björkhem I (1988)
Assay and properties of 25-hydroxyvitamin D3 23-hydroxylase. Evidence that 23,25-dihydroxyvitamin D3 is a major metabolite in 1,25-dihydroxyvitamin D3-treated or fasted guinea pigs
Biochem J, 250 (2), 527-32
DOI 10.1042/bj2500527, PubMed 3355535

Pedersen JI, Hvattum E, Flatabø T, Björkhem I (1988)
Clofibrate does not induce peroxisomal 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoyl coenzyme A oxidation in rat liver. Evidence that this reaction is catalyzed by an enzyme system different from that of peroxisomal acyl-coenzyme A oxidation
Biochem Int, 17 (1), 163-9
PubMed 3190714

Prydz K, Kase BF, Björkhem I, Pedersen JI (1988)
Subcellular localization of 3 alpha, 7 alpha-dihydroxy- and 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoyl-coenzyme A ligase(s) in rat liver
J Lipid Res, 29 (8), 997-1004
PubMed 3183523

Prydz K, Kase BF, Pedersen JI (1988)
High pressure liquid chromatography solvent systems for studies of bile acid biosynthesis
J Lipid Res, 29 (4), 532-7
PubMed 3392470

Sem SW, Nes M, Engedal K, Pedersen JI, Trygg K (1988)
An attempt to identify and describe a group of non-institutionalised elderly with the lowest nutrient score
Compr Gerontol A, 2 (2), 60-6
PubMed 3228818

Saarem K, Pedersen JI (1988)
Effect of age, gonadectomy and hypophysectomy on mitochondrial hydroxylation of vitamin D3 (cholecalciferol) and of 5 beta-cholestane-3 alpha,7 alpha,12 alpha-triol in female and male rat liver
Biochem J, 251 (2), 475-81
DOI 10.1042/bj2510475, PubMed 2840896

Publications 1987

Diczfalusy U, Alexson SE, Pedersen JI (1987)
Chain-shortening of prostaglandin F2 alpha by rat liver peroxisomes
Biochem Biophys Res Commun, 144 (3), 1206-13
DOI 10.1016/0006-291x(87)91439-2, PubMed 3472523

Sem SW, Sjøen RJ, Trygg K, Pedersen JI (1987)
Vitamin D status of two groups of elderly in Oslo: living in old people's homes and living in own homes
Compr Gerontol A, 1 (3), 126-30
PubMed 3453294

Saarem K, Pedersen JI (1987)
Sex differences in the hydroxylation of cholecalciferol and of 5 beta-cholestane-3 alpha, 7 alpha, 12 alpha-triol in rat liver
Biochem J, 247 (1), 73-8
DOI 10.1042/bj2470073, PubMed 2825658

Publications 1986

Bjørneboe GE, Johnsen J, Bjørneboe A, Rousseau B, Pedersen JI, Norum KR, Mørland J, Drevon CA (1986)
Effect of alcohol consumption on serum concentration of 25-hydroxyvitamin D3, retinol, and retinol-binding protein
Am J Clin Nutr, 44 (5), 678-82
DOI 10.1093/ajcn/44.5.678, PubMed 3766453

Ek J, Kase BF, Reith A, Björkhem I, Pedersen JI (1986)
Peroxisomal dysfunction in a boy with neurologic symptoms and amaurosis (Leber disease): clinical and biochemical findings similar to those observed in Zellweger syndrome
J Pediatr, 108 (1), 19-24
DOI 10.1016/s0022-3476(86)80763-6, PubMed 3944694

Holmberg I, Saarem K, Pedersen JI, Björkhem I (1986)
Assay of 25-hydroxy vitamin D3-1 alpha-hydroxylase in pig kidney mitochondria using isotope dilution-mass spectrometry
Anal Biochem, 159 (2), 317-22
DOI 10.1016/0003-2697(86)90348-9, PubMed 3548480

Kase BF, Prydz K, Björkhem I, Pedersen JI (1986)
In vitro formation of bile acids from di- and trihydroxy-5 beta-cholestanoic acid in human liver peroxisomes
Biochim Biophys Acta, 877 (1), 37-42
DOI 10.1016/0005-2760(86)90115-3, PubMed 3013317

Kase BF, Prydz K, Björkhem I, Pedersen JI (1986)
Conjugation of cholic acid with taurine and glycine by rat liver peroxisomes
Biochem Biophys Res Commun, 138 (1), 167-73
DOI 10.1016/0006-291x(86)90261-5, PubMed 3741411

Nilsson A, Arey H, Pedersen JI, Christiansen EN (1986)
The effect of high-fat diets on microsomal lauric acid hydroxylation in rat liver
Biochim Biophys Acta, 879 (2), 209-14
DOI 10.1016/0005-2760(86)90104-9, PubMed 3768400

Prydz K, Kase BF, Björkhem I, Pedersen JI (1986)
Formation of chenodeoxycholic acid from 3 alpha, 7 alpha-dihydroxy-5 beta-cholestanoic acid by rat liver peroxisomes
J Lipid Res, 27 (6), 622-8
PubMed 3746130

Publications 1985

Björkhem I, Blomstrand R, Blomstrand S, Braathen G, Broberger O, Glaumann H, Kase BF, Pedersen JI, Strandvik B (1985)
[Peroxisomal defects in Zellweger's disease--a description of 2 Swedish cases]
Lakartidningen, 82 (18), 1674-7
PubMed 3999874

Björkhem I, Kase BF, Pedersen JI (1985)
Role of peroxisomes in the biosynthesis of bile acids
Scand J Clin Lab Invest Suppl, 177, 23-31
PubMed 3865345

Dueland S, Bouillon R, Van Baelen H, Pedersen JI, Helgerud P, Drevon CA (1985)
Binding protein for vitamin D and its metabolites in rat mesenteric lymph
Am J Physiol, 249 (1 Pt 1), E1-5
DOI 10.1152/ajpendo.1985.249.1.E1, PubMed 2990230

Kase BF, Björkhem I, Hågå P, Pedersen JI (1985)
Defective peroxisomal cleavage of the C27-steroid side chain in the cerebro-hepato-renal syndrome of Zellweger
J Clin Invest, 75 (2), 427-35
DOI 10.1172/JCI111717, PubMed 3973012

Kase BF, Pedersen JI, Strandvik B, Björkhem I (1985)
In vivo and vitro studies on formation of bile acids in patients with Zellweger syndrome. Evidence that peroxisomes are of importance in the normal biosynthesis of both cholic and chenodeoxycholic acid
J Clin Invest, 76 (6), 2393-402
DOI 10.1172/JCI112252, PubMed 4077985

Saarem K, Pedersen JI (1985)
25-Hydroxylation of 1 alpha-hydroxyvitamin D-3 in rat and human liver
Biochim Biophys Acta, 840 (1), 117-26
DOI 10.1016/0304-4165(85)90168-0, PubMed 3995079

Publications 1984

Björkhem I, Blomstrand S, Hågå P, Kase BF, Palonek E, Pedersen JI, Strandvik B, Wikström SA (1984)
Urinary excretion of dicarboxylic acids from patients with the Zellweger syndrome. Importance of peroxisomes in beta-oxidation of dicarboxylic acids
Biochim Biophys Acta, 795 (1), 15-9
DOI 10.1016/0005-2760(84)90099-7, PubMed 6466694

Björkhem I, Kase BF, Pedersen JI (1984)
Mechanism of peroxisomal 24-hydroxylation of 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholestanoic acid in rat liver
Biochim Biophys Acta, 796 (2), 142-5
DOI 10.1016/0005-2760(84)90341-2, PubMed 6498207

Blomhoff R, Helgerud P, Dueland S, Berg T, Pedersen JI, Norum KR, Drevon CA (1984)
Lymphatic absorption and transport of retinol and vitamin D-3 from rat intestine. Evidence for different pathways
Biochim Biophys Acta, 772 (2), 109-16
DOI 10.1016/0005-2736(84)90033-6, PubMed 6326820

Saarem K, Bergseth S, Oftebro H, Pedersen JI (1984)
Subcellular localization of vitamin D3 25-hydroxylase in human liver
J Biol Chem, 259 (17), 10936-40
PubMed 6469991

Publications 1983

Björkhem I, Fausa O, Hopen G, Oftebro H, Pedersen JI, Skrede S (1983)
Role of the 26-hydroxylase in the biosynthesis of bile acids in the normal state and in cerebrotendinous xanthomatosis. An in vivo study
J Clin Invest, 71 (1), 142-8
DOI 10.1172/jci110742, PubMed 6848555

Dueland S, Helgerud P, Pedersen JI, Berg T, Drevon CA (1983)
Plasma clearance, transfer, and distribution of vitamin D3 from intestinal lymph
Am J Physiol, 245 (4), E326-31
DOI 10.1152/ajpendo.1983.245.4.E326, PubMed 6312805

Dueland S, Pedersen JI, Helgerud P, Drevon CA (1983)
Absorption, distribution, and transport of vitamin D3 and 25-hydroxyvitamin D3 in the rat
Am J Physiol, 245 (5 Pt 1), E463-7
DOI 10.1152/ajpendo.1983.245.5.E463, PubMed 6314821

Kase F, Björkhem I, Pedersen JI (1983)
Formation of cholic acid from 3 alpha, 7 alpha, 12 alpha-trihydroxy-5 beta-cholestanoic acid by rat liver peroxisomes
J Lipid Res, 24 (12), 1560-7
PubMed 6668450

Pedersen JI, Shobaki HH, Holmberg I, Bergseth S, Björkhem I (1983)
25-Hydroxyvitamin D3-24-hydroxylase in rat kidney mitochondria
J Biol Chem, 258 (2), 742-6
PubMed 6600452

Størmer FC, Støren O, Hansen CE, Pedersen JI, Aasen AJ (1983)
Formation of (4R)- and (4S)-4-hydroxyochratoxin A and 10-hydroxyochratoxin A from Ochratoxin A by rabbit liver microsomes
Appl Environ Microbiol, 45 (4), 1183-7
DOI 10.1128/aem.45.4.1183-1187.1983, PubMed 6859843

Publications 1982

Dueland S, Pedersen JI, Drevon CA, Björkhem I (1982)
26-hydroxylation of 5 beta-cholestane-3 alpha,7 alpha,12 alpha-triol by isolated nonparenchymal cells and hepatocytes from rat liver
J Lipid Res, 23 (9), 1321-7
PubMed 7161561

Dueland S, Pedersen JI, Helgerud P, Drevon CA (1982)
Transport of vitamin D3 from rat intestine. Evidence for transfer of vitamin D3 from chylomicrons to alpha-globulins
J Biol Chem, 257 (1), 146-50
PubMed 6171567

Haug E, Pedersen JI, Gautvik KM (1982)
Effects of vitamin D3 metabolites on production of prolactin and growth hormone in rat pituitary cells
Mol Cell Endocrinol, 28 (1), 65-79
DOI 10.1016/0303-7207(82)90041-7, PubMed 6290291

Publications 1981

Björkhem I, Oftebro H, Skrede S, Pedersen JI (1981)
Assay of intermediates in bile acid biosynthesis using isotope dilution--mass spectrometry: hepatic levels in the normal state and in cerebrotendinous xanthomatosis
J Lipid Res, 22 (2), 191-200
PubMed 7017048

Dueland S, Holmberg I, Berg T, Pedersen JI (1981)
Uptake and 25-hydroxylation of vitamin D3 by isolated rat liver cells
J Biol Chem, 256 (20), 10430-4
PubMed 6270111

Oftebro H, Björkhem I, Størmer FC, Pedersen JI (1981)
Cerebrotendinous xanthomatosis: defective liver mitochondrial hydroxylation of chenodeoxycholic acid precursors
J Lipid Res, 22 (4), 632-40
PubMed 6792308

Oftebro H, Saarem K, Björkhem I, Pedersen JI (1981)
Side chain hydroxylation of C27-steroids and vitamin D3 by a cytochrome P-450 enzyme system isolated from human liver mitochondria
J Lipid Res, 22 (8), 1254-64
PubMed 6274987

Størmer FC, Hansen CE, Pedersen JI, Hvistendahl G, Aasen AJ (1981)
Formation of (4R)- and (4S)-4-hydroxyochratoxin A from ochratoxin A by liver microsomes from various species
Appl Environ Microbiol, 42 (6), 1051-6
DOI 10.1128/aem.42.6.1051-1056.1981, PubMed 7316512

Publications 1980

Björkhem I, Holmberg I, Oftebro H, Pedersen JI (1980)
Properties of a reconstituted vitamin D3 25-hydroxylase from rat liver mitochondria
J Biol Chem, 255 (11), 5244-9
PubMed 6246101

Pedersen JI, Gustafsson J (1980)
Conversion of 3 alpha, 7 alpha, 12 alpha-trihydroxy-5 beta-cholestanoic acid into cholic acid by rat liver peroxisomes
FEBS Lett, 121 (2), 345-8
DOI 10.1016/0014-5793(80)80377-2, PubMed 7461136

Størmer FC, Pedersen JI (1980)
Formation of 4-hydroxyochratoxin A from ochratoxin A by rat liver microsomes
Appl Environ Microbiol, 39 (5), 971-5
DOI 10.1128/aem.39.5.971-975.1980, PubMed 7396488

Publications 1979

Björkhem I, Holmberg I, Kristiansen T, Pedersen JI (1979)
Assay of 1,25-dihydroxy vitamin D3 by isotope dilution--mass fragmentography
Clin Chem, 25 (4), 584-8
PubMed 466767

Pedersen JI, Björkhem I, Gustafsson J (1979)
26-Hydroxylation of C27-steroids by soluble liver mitochondrial cytochrome P-450
J Biol Chem, 254 (14), 6464-9
PubMed 447728

Pedersen JI, Holmberg I, Björkhem I (1979)
Reconstitution of vitamin D3 25-hydroxylase activity with a cytochrome P-450 preparation from rat liver mitochondria
FEBS Lett, 98 (2), 394-8
DOI 10.1016/0014-5793(79)80225-2, PubMed 217740

Publications 1978

Pedersen JI (1978)
Rat liver mitochondrial cytochrome P-450 active in a reconstituted steroid hydroxylation reaction
FEBS Lett, 85 (1), 35-9
DOI 10.1016/0014-5793(78)81242-3, PubMed 620792

Pedersen JI, Godager HK (1978)
Purification of NADPH-ferredoxin reductase from rat liver mitochondria
Biochim Biophys Acta, 525 (1), 28-36
DOI 10.1016/0005-2744(78)90196-1, PubMed 687632

Pedersen JI, Saarem K (1978)
Rat liver mitochondrial cytochrome P-450--A C27-steroid 26-hydroxylase
J Steroid Biochem, 9 (12), 1165-8
DOI 10.1016/0022-4731(78)90007-9, PubMed 745412

Saarem K, Pedersen JI, Tollersrud S (1978)
Soluble 25-hydroxyvitamin D3-1 alpha-hydroxylase from kidney mitochondria of rachitic pigs
Comp Biochem Physiol B, 61 (4), 485-90
DOI 10.1016/0305-0491(78)90039-1, PubMed 318387

Publications 1977

Pedersen JI, Oftebro H, Vänngård T (1977)
Isolation from bovine liver mitochondria of a soluble ferredoxin active in a reconstituted steroid hydroxylation reaction
Biochem Biophys Res Commun, 76 (3), 666-73
DOI 10.1016/0006-291x(77)91552-2, PubMed 197920

Publications 1976

Pedersen JI, Ghazarian JG, Orme-Johnson NR, DeLuca HF (1976)
Isolation of chick renal mitochondrial ferredoxin active in the 25-hydroxyvitamin D3-1alpha-hydroxylase system
J Biol Chem, 251 (13), 3933-41
PubMed 819434

Publications 1975

Flatmark T, Pedersen JI (1975)
Brown adipose tissue mitochondria
Biochim Biophys Acta, 416 (1), 53-103
DOI 10.1016/0304-4173(75)90013-0, PubMed 235330

Pedersen JI, Slinde E, Grynne B, Aas M (1975)
The intracellular localization of long-chain acyl-CoA synthetase in brown adipose tissue
Biochim Biophys Acta, 398 (1), 191-203
DOI 10.1016/0005-2760(75)90182-4, PubMed 167854

Slinde E, Pedersen JI, Flatmark T (1975)
Sedimentation coefficient and buoyant density of brown adipose tissue mitochondria from guinea pigs
Anal Biochem, 65 (1-2), 581-5
DOI 10.1016/0003-2697(75)90551-5, PubMed 165754

Publications 1973

Flatmark T, Pedersen JI (1973)
Studies on the energy state of isolated brown adipose tissue mitochondria. Effect of adenine nucleotides and oligomycin on the generation and dissipation of the "energy potential"
Biochim Biophys Acta, 292 (1), 64-72
DOI 10.1016/0005-2728(73)90250-8, PubMed 4705136

Flatmark T, Pedersen JI (1973)
Energy-dependent redox reactions of two b-type cytochromes in brown adipose tissue mitochondria
Biochim Biophys Acta, 325 (1), 16-28
DOI 10.1016/0005-2728(73)90146-1, PubMed 4770728

Pedersen JI (1973)
[Editorial: Evaluation and planning of food habits. Norwegian-Swedish recommendations for intake of nutrition]
Tidsskr Nor Laegeforen, 93 (9), 609-10
PubMed 4759815

Pedersen JI, Flatmark R (1973)
Studies on the energy state of isolated brown adipose tissue mitochondria. A comparative study of cold-stressed and warm-readapted guinea pigs
Biochim Biophys Acta, 305 (2), 219-29
DOI 10.1016/0005-2728(73)90171-0, PubMed 4741131

Publications 1972

Pedersen JI, Flatmark T (1972)
Studies on the energy state of isolated brown adipose tissue mitochondria. The cytochrome b complex as a probe of the energy state of the mitochondrial inner membrane
Biochim Biophys Acta, 275 (2), 135-47
DOI 10.1016/0005-2728(72)90034-5, PubMed 5053270

Pedersen JI, Grav HJ (1972)
Physiologically-induced loose coupling of brown-adipose-tissue mitochondria correlated to endogenous fatty acids and adenosine phosphates
Eur J Biochem, 25 (1), 75-83
DOI 10.1111/j.1432-1033.1972.tb01669.x, PubMed 5023583

Skaane O, Christiansen EN, Pedersen JI, Grav HJ (1972)
Oxidative properties of brown adipose tissue mitochondria from rats, guinea-pigs and hedgehogs
Comp Biochem Physiol B, 42 (1), 91-107
DOI 10.1016/0305-0491(72)90062-4, PubMed 5075772

Publications 1971

Andersen HT, Christiansen EN, Grav HJ, Pedersen JI (1971)
Mitochondrial regulation of thermogenesis in brown adipose tissue
J Physiol (Paris), 63 (3), 194-7
PubMed 5121899

Publications 1970

Andersen HT, Christiansen EN, Grav HJ, Pedersen JI (1970)
Thermogenesis of brown adipose tissue reflected in mitochondrial respiratory control
Acta Physiol Scand, 80 (1), 1-10
DOI 10.1111/j.1748-1716.1970.tb04763.x, PubMed 5475328

Grav HJ, Pedersen JI, Christiansen EN (1970)
Conditions in vitro which affect respiratory control and capacity for respiration-linked phosphorylation in brown adipose tissue mitochondria
Eur J Biochem, 12 (1), 11-23
DOI 10.1111/j.1432-1033.1970.tb00815.x, PubMed 4313979

Pedersen JI (1970)
[Enzymatic views on obesity]
Tidsskr Nor Laegeforen, 90 (2), 197-202
PubMed 4914232

Pedersen JI (1970)
Coupled endogenous respiration in brown adipose tissue mitochondria
Eur J Biochem, 16 (1), 12-8
DOI 10.1111/j.1432-1033.1970.tb01047.x, PubMed 5456126

Publications 1969

Andersen HT, Christiansen EN, Gray HJ, Pedersen JI (1969)
Brown fat thermogenesis reflected in mitochondrial respiration
Acta Physiol Scand, 76 (1), 12A
PubMed 5823368

Christiansen EN, Pedersen JI, Grav HJ (1969)
Uncoupling and recoupling of oxidative phosphorylation in brown adipose tissue mitochondria
Nature, 222 (5196), 857-60
DOI 10.1038/222857a0, PubMed 5770525

Pedersen JI (1969)
[Energy metabolism in adiposity]
Nord Med, 82 (39), 1214-7
PubMed 4902040

Publications 1968

Pedersen JI (1968)
[Significance of liponeogenesis in glucose metabolism]
Nord Med, 80 (35), 1137-40
PubMed 5722518

Pedersen JI, Christiansen EN, Grav HJ (1968)
Respiration-linked phosphorylation in mitochondria of guinea-pig brown fat
Biochem Biophys Res Commun, 32 (3), 492-500
DOI 10.1016/0006-291x(68)90689-x, PubMed 5666733

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