Jens Petter Berg
Position: Professor
Phone: +47-23027251 / 48496950
Email:
 

Author network for Jens Petter Berg by COREMINE medical


Publications 2016

Beitland S, Waldum-Grevbo BE, Nakstad ER, Berg JP, Trøseid AS, Brusletto BS, Brunborg C, Andersen GØ, Sunde K (2016)
Urine biomarkers give early prediction of acute kidney injury and outcome after out-of-hospital cardiac arrest
Crit Care, 20 (1), 314
PubMed 27716377

Hellum M, Trøseid AS, Berg JP, Brandtzaeg P, Øvstebø R, Henriksson CE (2016)
The Neisseria meningitidis lpxL1 mutant induces less tissue factor expression and activity in primary human monocytes and monocyte-derived microvesicles than the wild type meningococcus
Innate Immun, 23 (2), 196-205
PubMed 28024455

Hov KR, Berg JP, Frihagen F, Ræder J, Hall R, Wyller TB, Watne LO (2016)
Blood-Cerebrospinal Fluid Barrier Integrity in Delirium Determined by Q-Albumin
Dement Geriatr Cogn Disord, 41 (3-4), 192-8
PubMed 27058253

Jørgenrud B, Stene LC, Tapia G, Bøås H, Pepaj M, Berg JP, Thorsby PM, Orešič M, Hyötyläinen T, Rønningen KS (2016)
Longitudinal plasma metabolic profiles, infant feeding, and islet autoimmunity in the MIDIA study
Pediatr Diabetes, 18 (2), 111-119
PubMed 26791677

Kristensen GB, Rustad P, Berg JP, Aakre KM (2016)
Analytical Bias Exceeding Desirable Quality Goal in 4 out of 5 Common Immunoassays: Results of a Native Single Serum Sample External Quality Assessment Program for Cobalamin, Folate, Ferritin, Thyroid-Stimulating Hormone, and Free T4 Analyses
Clin Chem, 62 (9), 1255-63
PubMed 27384539

Mårild K, Vistnes M, Tapia G, Midttun Ø, Ueland PM, Viken MK, Magnus P, Berg JP, Stene LC, Størdal K (2016)
Midpregnancy and cord blood immunologic biomarkers, HLA genotype, and pediatric celiac disease
J Allergy Clin Immunol (in press)
PubMed 27865861

Normann KR, Øystese KA, Berg JP, Lekva T, Berg-Johnsen J, Bollerslev J, Olarescu NC (2016)
Selection and validation of reliable reference genes for RT-qPCR analysis in a large cohort of pituitary adenomas
Mol Cell Endocrinol, 437, 183-189
PubMed 27561203

Sachse D, Solevåg AL, Berg JP, Nakstad B (2016)
The Role of Plasma and Urine Metabolomics in Identifying New Biomarkers in Severe Newborn Asphyxia: A Study of Asphyxiated Newborn Pigs following Cardiopulmonary Resuscitation
PLoS One, 11 (8), e0161123
PubMed 27529347

Waage C, Jenum AK, Mdala I, Berg JP, Richardsen K, Birkeland K (2016)
Associations between gestational diabetes mellitus and elevated HbA1c early postpartum in a multi-ethnic population
Prim Care Diabetes (in press)
PubMed 27771271

Publications 2015

Kringen MK, Stormo C, Berg JP, Terry SF, Vocke CM, Rizvi S, Hendig D, Piehler AP (2015)
Copy number variation in the ATP-binding cassette transporter ABCC6 gene and ABCC6 pseudogenes in patients with pseudoxanthoma elasticum
Mol Genet Genomic Med, 3 (3), 233-7
PubMed 26029710

Lekva T, Berg JP, Lyle R, Heck A, Bollerslev J, Ueland T (2015)
Alternative splicing of placental lactogen (CSH2) in somatotroph pituitary adenomas
Neuro Endocrinol Lett, 36 (2), 136-42
PubMed 26071582

Reppe S, Noer A, Grimholt RM, Halldórsson BV, Medina-Gomez C, Gautvik VT, Olstad OK, Berg JP, Datta H, Estrada K, Hofman A, Uitterlinden AG, Rivadeneira F, Lyle R, Collas P, Gautvik KM (2015)
Methylation of bone SOST, its mRNA, and serum sclerostin levels correlate strongly with fracture risk in postmenopausal women
J Bone Miner Res, 30 (2), 249-56
PubMed 25155887

Publications 2014

Gopinathan U, Brusletto BS, Olstad OK, Kierulf P, Berg JP, Brandtzaeg P, Øvstebø R (2014)
IL-10 immunodepletion from meningococcal sepsis plasma induces extensive changes in gene expression and cytokine release in stimulated human monocytes
Innate Immun, 21 (4), 429-49
PubMed 25233959

Landrø NI, Jonassen R, Clark L, Haug KB, Aker M, Bø R, Berg JP, Neumeister A, Stiles TC (2014)
Serotonin transporter polymorphisms predict response inhibition in healthy volunteers
Neurosci Lett, 584, 109-12
PubMed 25451724

Moltu SJ, Sachse D, Blakstad EW, Strømmen K, Nakstad B, Almaas AN, Westerberg AC, Rønnestad A, Brække K, Veierød MB, Iversen PO, Rise F, Berg JP, Drevon CA (2014)
Urinary metabolite profiles in premature infants show early postnatal metabolic adaptation and maturation
Nutrients, 6 (5), 1913-30
PubMed 24824288

Sachse D, Bærug A, Sletner L, Birkeland KI, Nakstad B, Jenum AK, Berg JP (2014)
Urine NMR metabolomics analysis of breastfeeding biomarkers during and after pregnancy in a large prospective cohort study
Scand J Clin Lab Invest, 74 (3), 264-72
PubMed 24621206

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

Stormo C, Kringen MK, Lyle R, Olstad OK, Sachse D, Berg JP, Piehler AP (2014)
RNA-sequencing analysis of HepG2 cells treated with atorvastatin
PLoS One, 9 (8), e105836
PubMed 25153832

Vikøren TB, Berg JP, Berg TJ (2014)
[Sources of error when using haemoglobin A1c]
Tidsskr Nor Laegeforen, 134 (4), 417-21
PubMed 24569741

Publications 2013

Evang JA, Bollerslev J, Casar-Borota O, Lekva T, Ramm-Pettersen J, Berg JP (2013)
Different levels of various glucocorticoid-regulated genes in corticotroph adenomas
Endocrine, 44 (1), 220-7
PubMed 23315031

Hellum M, Øvstebø R, Brusletto BS, Berg JP, Brandtzaeg P, Henriksson CE (2013)
Microparticle-associated tissue factor activity correlates with plasma levels of bacterial lipopolysaccharides in meningococcal septic shock
Thromb Res, 133 (3), 507-14
PubMed 24423888

Lekva T, Berg JP, Heck A, Lyngvi Fougner S, Olstad OK, Ringstad G, Bollerslev J, Ueland T (2013)
Attenuated RORC expression in the presence of EMT progression in somatotroph adenomas following treatment with somatostatin analogs is associated with poor clinical recovery
PLoS One, 8 (6), e66927
PubMed 23825587

Lekva T, Berg JP, Lyle R, Heck A, Ringstad G, Olstad OK, Michelsen AE, Casar-Borota O, Bollerslev J, Ueland T (2013)
Epithelial splicing regulator protein 1 and alternative splicing in somatotroph adenomas
Endocrinology, 154 (9), 3331-43
PubMed 23825128

Sakhi AK, Berg JP, Berg TJ (2013)
Glyoxalase 1 enzyme activity in erythrocytes and Ala111Glu polymorphism in type 1-diabetes patients
Scand J Clin Lab Invest, 73 (2), 175-81
PubMed 23360186

Publications 2012

Berg JP (2012)
Statement of retraction. Biomarkers of alcoholism: an updated review
Scand J Clin Lab Invest, 72 (4), 343
PubMed 22724629

Fougner SL, Casar-Borota O, Heck A, Berg JP, Bollerslev J (2012)
Adenoma granulation pattern correlates with clinical variables and effect of somatostatin analogue treatment in a large series of patients with acromegaly
Clin Endocrinol (Oxf), 76 (1), 96-102
PubMed 21722151

Gopinathan U, Ovstebø R, Olstad OK, Brusletto B, Dalsbotten Aass HC, Kierulf P, Brandtzaeg P, Berg JP (2012)
Global effect of interleukin-10 on the transcriptional profile induced by Neisseria meningitidis in human monocytes
Infect Immun, 80 (11), 4046-54
PubMed 22966040

Hellum M, Øvstebø R, Trøseid AM, Berg JP, Brandtzaeg P, Henriksson CE (2012)
Microparticle-associated tissue factor activity measured with the Zymuphen MP-TF kit and the calibrated automated thrombogram assay
Blood Coagul Fibrinolysis, 23 (6), 520-6
PubMed 22732249

Jonassen R, Endestad T, Neumeister A, Foss Haug KB, Berg JP, Landrø NI (2012)
Serotonin transporter polymorphism modulates N-back task performance and fMRI BOLD signal intensity in healthy women
PLoS One, 7 (1), e30564
PubMed 22291990

Jonassen R, Endestad T, Neumeister A, Foss Haug KB, Berg JP, Landrø NI (2012)
The effects of the serotonin transporter polymorphism and age on frontal white matter integrity in healthy adult women
Front Hum Neurosci, 6, 19
PubMed 22347858

Jorde R, Schirmer H, Wilsgaard T, Joakimsen RM, Mathiesen EB, Njølstad I, Løchen ML, Figenschau Y, Berg JP, Svartberg J, Grimnes G (2012)
Polymorphisms related to the serum 25-hydroxyvitamin D level and risk of myocardial infarction, diabetes, cancer and mortality. The Tromsø Study
PLoS One, 7 (5), e37295
PubMed 22649517

Kringen MK, Stormo C, Grimholt RM, Berg JP, Piehler AP (2012)
Copy number variations of the ATP-binding cassette transporter ABCC6 gene and its pseudogenes
BMC Res Notes, 5, 425
PubMed 22873774

Lekva T, Berg JP, Fougner SL, Olstad OK, Ueland T, Bollerslev J (2012)
Gene expression profiling identifies ESRP1 as a potential regulator of epithelial mesenchymal transition in somatotroph adenomas from a large cohort of patients with acromegaly
J Clin Endocrinol Metab, 97 (8), E1506-14
PubMed 22585092

Moltu SJ, Strømmen K, Blakstad EW, Almaas AN, Westerberg AC, Brække K, Rønnestad A, Nakstad B, Berg JP, Veierød MB, Haaland K, Iversen PO, Drevon CA (2012)
Enhanced feeding in very-low-birth-weight infants may cause electrolyte disturbances and septicemia--a randomized, controlled trial
Clin Nutr, 32 (2), 207-12
PubMed 23043722

Reppe S, Sachse D, Olstad OK, Gautvik VT, Sanderson P, Datta HK, Berg JP, Gautvik KM (2012)
Identification of transcriptional macromolecular associations in human bone using browser based in silico analysis in a giant correlation matrix
Bone, 53 (1), 69-78
PubMed 23195995

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Transfusion, 52 (6), e17-9
PubMed 22452379

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Am J Hematol, 87 (4), 347-8
PubMed 22410758

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Clin Chim Acta, 413 (7-8), 653-5
PubMed 22261017

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Clin Chem, 58 (3), 483-5
PubMed 22302921

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Scand J Clin Lab Invest, 72 (2), 89-91
PubMed 22339367

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Clin Chem Lab Med, 50 (3), 411-3
PubMed 22505546

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Delanghe J (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports. Statement by the Consortium of Laboratory Medicine Journal Editors
Ann Clin Biochem, 49 (Pt 2), 105-7
PubMed 22296778

Rifai N, Annesley TM, Berg JP, Brugnara C, Delvin E, Lamb EJ, Ness PM, Plebani M, Wick MR, Wu A, Joris Delanghe (2012)
An appeal to medical journal editors: the need for a full description of laboratory methods and specimen handling in clinical study reports
Clin Biochem, 45 (3), 185-6
PubMed 22297270

Sachse D, Sletner L, Mørkrid K, Jenum AK, Birkeland KI, Rise F, Piehler AP, Berg JP (2012)
Metabolic changes in urine during and after pregnancy in a large, multiethnic population-based cohort study of gestational diabetes
PLoS One, 7 (12), e52399
PubMed 23285025

Stormo C, Kringen MK, Grimholt RM, Berg JP, Piehler AP (2012)
A novel 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) splice variant with an alternative exon 1 potentially encoding an extended N-terminus
BMC Mol Biol, 13, 29
PubMed 22989091

Publications 2011

Berg JP (2011)
Hemoglobin A1c – anvendelse og analysekvalitet
Bioingeniøren, 46 (2), 16-19
PublikaID 128

Berg JP, Hanssen KF, Bjerve KS, Claudi T, Dahl-Jørgensen K, Rustad P, Sandberg S, Skrivarhaug T (2011)
[Standardized hemoglobin A1C for diagnostic use?]
Tidsskr Nor Laegeforen, 131 (6), 565-6
PubMed 21423304

Evang JA, Berg JP, Casar-Borota O, Lekva T, Kringen MK, Ramm-Pettersen J, Bollerslev J (2011)
Reduced levels of E-cadherin correlate with progression of corticotroph pituitary tumours
Clin Endocrinol (Oxf), 75 (6), 811-8
PubMed 21595730

Lund T, Svindland A, Pepaj M, Jensen AB, Berg JP, Kilhovd B, Hanssen KF (2011)
Fibrin(ogen) may be an important target for methylglyoxal-derived AGE modification in elastic arteries of humans
Diab Vasc Dis Res, 8 (4), 284-94
PubMed 21844128

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2011)
Full-disclosure in industry-sponsored laboratory medicine research studies: Statement by the Consortium of Laboratory Medicine Journal Editors
Am J Hematol, 86 (3), 244
PubMed 21351119

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2011)
Full disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Ann Clin Biochem, 48 (Pt 1), 5-6
PubMed 21233327

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

Øvstebø R, Aass HC, Haug KB, Trøseid AM, Gopinathan U, Kierulf P, Berg JP, Brandtzaeg P, Henriksson CE (2011)
LPS from Neisseria meningitidis is crucial for inducing monocyte- and microparticle-associated tissue factor activity but not for tissue factor expression
Innate Immun, 18 (4), 580-91
PubMed 22180561

Aass HC, Øvstebø R, Trøseid AM, Kierulf P, Berg JP, Henriksson CE (2011)
Fluorescent particles in the antibody solution result in false TF- and CD14-positive microparticles in flow cytometric analysis
Cytometry A, 79 (12), 990-9
PubMed 21990118

Publications 2010

Evang JA, Borota OC, Melum E, Holm R, Ramm-Pettersen J, Bollerslev J, Berg JP (2010)
HDAC2 expression and variable number of repeats in exon 1 of the HDAC2 gene in corticotroph adenomas
Clin Endocrinol (Oxf), 73 (2), 229-35
PubMed 20346000

Fougner SL, Lekva T, Borota OC, Hald JK, Bollerslev J, Berg JP (2010)
The expression of E-cadherin in somatotroph pituitary adenomas is related to tumor size, invasiveness, and somatostatin analog response
J Clin Endocrinol Metab, 95 (5), 2334-42
PubMed 20335450

Kringen MK, Haug KB, Grimholt RM, Stormo C, Narum S, Opdal MS, Fosen JT, Piehler AP, Johansen PW, Seljeflot I, Berg JP, Brørs O (2010)
Genetic variation of VKORC1 and CYP4F2 genes related to warfarin maintenance dose in patients with myocardial infarction
J Biomed Biotechnol, 2011, 739751
PubMed 21127708

Piehler AP, Grimholt RM, Ovstebø R, Berg JP (2010)
Gene expression results in lipopolysaccharide-stimulated monocytes depend significantly on the choice of reference genes
BMC Immunol, 11, 21
PubMed 20441576

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Clin Chem, 57 (3), 359-60
PubMed 21173108

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full-disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Scand J Clin Lab Invest, 71 (3), 177-8
PubMed 21174565

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Transfusion, 52 (6), e15-6
PubMed 22686537

Rifai N, Plebani M, Wu A, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full-disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Clin Chem Lab Med, 49 (1), 3-4
PubMed 21155691

Rifai N, Plebani M, Wu AH, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full disclosure in industry-sponsored laboratory medicine research studies: Statement by the Consortium of Laboratory Medicine Journal Editors
Clin Biochem, 44 (2-3), 149-50
PubMed 21183162

Rifai N, Plebani M, Wu AH, Delanghe J, Brugnara C, Delvin E, Lamb EJ, Ness PM, Wick MR, Berg JP (2010)
Full-disclosure in industry-sponsored laboratory medicine research studies: statement by the Consortium of Laboratory Medicine Journal Editors
Clin Chim Acta, 412 (7-8), 491-2
PubMed 21159312

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

Publications 2009

Bollerslev J, Fougner SL, Berg JP (2009)
New directions in pharmacological treatment of acromegaly
Expert Opin Investig Drugs, 18 (1), 13-22
PubMed 19053878

Bratland A, Boender PJ, Høifødt HK, Østensen IH, Ruijtenbeek R, Wang MY, Berg JP, Lilleby W, Fodstad Ø, Ree AH (2009)
Osteoblast-induced EGFR/ERBB2 signaling in androgen-sensitive prostate carcinoma cells characterized by multiplex kinase activity profiling
Clin Exp Metastasis, 26 (5), 485-96
PubMed 19294521

Hetland RB, Alexander J, Berg JP, Svendsen C, Paulsen JE (2009)
Retinol-induced intestinal tumorigenesis in Min/+ mice and importance of vitamin D status
Anticancer Res, 29 (11), 4353-60
PubMed 20032378

Thorsby PM, Midthjell K, Gjerlaugsen N, Holmen J, Hanssen KF, Birkeland KI, Berg JP (2009)
Comparison of genetic risk in three candidate genes (TCF7L2, PPARG, KCNJ11) with traditional risk factors for type 2 diabetes in a population-based study--the HUNT study
Scand J Clin Lab Invest, 69 (2), 282-7
PubMed 18972257

Tretli S, Hernes E, Berg JP, Hestvik UE, Robsahm TE (2009)
Association between serum 25(OH)D and death from prostate cancer
Br J Cancer, 100 (3), 450-4
PubMed 19156140

Aas AM, Hanssen KF, Berg JP, Thorsby PM, Birkeland KI (2009)
Insulin-stimulated increase in serum leptin levels precedes and correlates with weight gain during insulin therapy in type 2 diabetes
J Clin Endocrinol Metab, 94 (8), 2900-6
PubMed 19509109

Publications 2008

Asadi AB, Torjesen PA, Haug E, Berg JP (2008)
Biochemical characterization of four novel mutations in the thyroid hormone receptor beta gene in patients with resistance to thyroid hormone
Scand J Clin Lab Invest, 68 (7), 563-7
PubMed 19378427

Erichsen MM, Løvås K, Fougner KJ, Svartberg J, Hauge ER, Bollerslev J, Berg JP, Mella B, Husebye ES (2008)
Normal overall mortality rate in Addison's disease, but young patients are at risk of premature death
Eur J Endocrinol, 160 (2), 233-7
PubMed 19011006

Fosmark DS, Berg JP, Jensen AB, Sandvik L, Agardh E, Agardh CD, Hanssen KF (2008)
Increased retinopathy occurrence in type 1 diabetes patients with increased serum levels of the advanced glycation endproduct hydroimidazolone
Acta Ophthalmol, 87 (5), 498-500
PubMed 18631328

Fougner SL, Bollerslev J, Latif F, Hald JK, Lund T, Ramm-Pettersen J, Berg JP (2008)
Low levels of raf kinase inhibitory protein in growth hormone-secreting pituitary adenomas correlate with poor response to octreotide treatment
J Clin Endocrinol Metab, 93 (4), 1211-6
PubMed 18230656

Stene LC, Thorsby PM, Berg JP, Rønningen KS, Joner G, Norwegian Childhood Diabetes Study Group (2008)
Peroxisome proliferator-activated receptor-gamma2 Pro12Ala polymorphism, cod liver oil and risk of type 1 diabetes
Pediatr Diabetes, 9 (1), 40-5
PubMed 18211635

Publications 2007

Fosmark DS, Bragadóttir R, Stene-Johansen I, Berg JP, Berg TJ, Lund T, Sandvik L, Hanssen KF (2007)
Increased vitreous levels of hydroimidazolone in type 2 diabetes patients are associated with retinopathy: a case-control study
Acta Ophthalmol Scand, 85 (6), 618-22
PubMed 17488318

Fougner SL, Borota OC, Berg JP, Hald JK, Ramm-Pettersen J, Bollerslev J (2007)
The clinical response to somatostatin analogues in acromegaly correlates to the somatostatin receptor subtype 2a protein expression of the adenoma
Clin Endocrinol (Oxf), 68 (3), 458-65
PubMed 17941904

Lagunova Z, Porojnicu AC, Dahlback A, Berg JP, Beer TM, Moan J (2007)
Prostate cancer survival is dependent on season of diagnosis
Prostate, 67 (12), 1362-70
PubMed 17624920

Moan J, Porojnicu A, Lagunova Z, Berg JP, Dahlback A (2007)
Colon cancer: prognosis for different latitudes, age groups and seasons in Norway
J Photochem Photobiol B, 89 (2-3), 148-55
PubMed 18029190

Porojnicu A, Robsahm TE, Berg JP, Moan J (2007)
Season of diagnosis is a predictor of cancer survival. Sun-induced vitamin D may be involved: a possible role of sun-induced Vitamin D
J Steroid Biochem Mol Biol, 103 (3-5), 675-8
PubMed 17229569

Porojnicu AC, Robsahm TE, Dahlback A, Berg JP, Christiani D, Bruland OS, Moan J (2007)
Seasonal and geographical variations in lung cancer prognosis in Norway. Does Vitamin D from the sun play a role?
Lung Cancer, 55 (3), 263-70
PubMed 17207891

Publications 2006

Gütgemann I, Haas S, Berg JP, Zhou H, Büttner R, Fischer HP (2006)
CD56 expression aids in the differential diagnosis of cholangiocarcinomas and benign cholangiocellular lesions
Virchows Arch, 448 (4), 407-11
PubMed 16411132

Porojnicu AC, Lagunova Z, Robsahm TE, Berg JP, Dahlback A, Moan J (2006)
Changes in risk of death from breast cancer with season and latitude: sun exposure and breast cancer survival in Norway
Breast Cancer Res Treat, 102 (3), 323-8
PubMed 17028983

Stene LC, Thorsby PM, Berg JP, Rønningen KS, Undlien DE, Joner G, Norwegian Childhood Diabetes Study Group (2006)
The relation between size at birth and risk of type 1 diabetes is not influenced by adjustment for the insulin gene (-23HphI) polymorphism or HLA-DQ genotype
Diabetologia, 49 (9), 2068-73
PubMed 16691379

Publications 2005

Berg JP, Bjerknes R (2005)
[Molecular diagnostics in endocrine diseases]
Tidsskr Nor Laegeforen, 125 (21), 2959-63
PubMed 16276381

Løvås K, Erichsen MM, Husebye ES, Fougner KJ, Svartberg J, Mella B, Myhre AG, Berg JP, Aarskog D (2005)
[Primary adrenal failure--causes, diagnostics and therapy]
Tidsskr Nor Laegeforen, 125 (2), 155-8
PubMed 15665886

Thorsby PM, Berg JP, Birkeland KI (2005)
Insulin gene variable number of tandem repeats is associated with increased fat mass during adolescence in non-obese girls
Scand J Clin Lab Invest, 65 (2), 163-8
PubMed 16025839

Publications 2003

Distante S, Elmberg M, Foss Haug KB, Ovstebø R, Berg JP, Kierulf P, Hultcrantz R, Bell H (2003)
Tumour necrosis factor alpha and its promoter polymorphisms' role in the phenotypic expression of hemochromatosis
Scand J Gastroenterol, 38 (8), 871-7
PubMed 12940442

Publications 2002

Berg JP (2002)
A molecular switch for parathyroid cell differentiation
Eur J Endocrinol, 146 (3), 281-2
PubMed 11888832

Distante S, Bjøro K, Hellum KB, Myrvang B, Berg JP, Skaug K, Raknerud N, Bell H (2002)
Raised serum ferritin predicts non-response to interferon and ribavirin treatment in patients with chronic hepatitis C infection
Liver, 22 (3), 269-75
PubMed 12100578

Publications 2001

Birkeland KI, Berg JP (2001)
Type 2 diabetes--preventable, but how?
Eur J Endocrinol, 145 (5), 573-5
PubMed 11720873

Undlien DE, Berg JP (2001)
Common variants in the regulatory region of the insulin gene are associated with fasting plasma insulin levels in juvenile obesity
Eur J Endocrinol, 144 (5), 457-9
PubMed 11331210

Publications 2000

Bell H, Berg JP, Undlien DE, Distante S, Raknerud N, Heier HE, Try K, Thomassen Y, Haug E, Raha-Chowdhury R, Thorsby E (2000)
The clinical expression of hemochromatosis in Oslo, Norway. Excessive oral iron intake may lead to secondary hemochromatosis even in HFE C282Y mutation negative subjects
Scand J Gastroenterol, 35 (12), 1301-7
PubMed 11199371

Berg JP (2000)
Leptin is a potent anti-diabetic in mice with lipodystrophy and insulin resistance
Eur J Endocrinol, 142 (2), 114-6
PubMed 10664517

Berg JP (2000)
Pygmy mouse gene mutation protects against obesity
Eur J Endocrinol, 143 (3), 317-8
PubMed 11022171

Berg JP, Lehmann EH, Stakkestad JA, Haug E, Halse J (2000)
The Sp1 binding site polymorphism in the collagen type I alpha 1 (COLIA1) gene is not associated with bone mineral density in healthy children, adolescents, and young adults
Eur J Endocrinol, 143 (2), 261-5
PubMed 10913946

Bratland A, Risberg K, Maelandsmo GM, Gützkow KB, Olsen OE, Moghaddam A, Wang MY, Hansen CM, Blomhoff HK, Berg JP, Fodstad O, Ree AH (2000)
Expression of a novel factor, com1, is regulated by 1,25-dihydroxyvitamin D3 in breast cancer cells
Cancer Res, 60 (19), 5578-83
PubMed 11034106

Distante S, Berg JP, Lande K, Haug E, Bell H (2000)
HFE gene mutation (C282Y) and phenotypic expression among a hospitalised population in a high prevalence area of haemochromatosis
Gut, 47 (4), 575-9
PubMed 10986220

Fuglei E, Aanestad M, Berg JP (2000)
Hormones and metabolites of arctic foxes (Alopex lagopus) in response to season, starvation and re-feeding
Comp Biochem Physiol A Mol Integr Physiol, 126 (2), 287-94
PubMed 10936768

Schafroth U, Godang K, Ueland T, Berg JP, Bollerslev J (2000)
Leptin levels in relation to body composition and insulin concentration in patients with endogenous Cushing's syndrome compared to controls matched for body mass index
J Endocrinol Invest, 23 (6), 349-55
PubMed 10908161

Publications 1999

Berg JP (1999)
Vitamin D-binding protein prevents vitamin D deficiency and presents vitamin D for its renal activation
Eur J Endocrinol, 141 (4), 321-2
PubMed 10526241

Berg JP (1999)
Pluripotent PPARgamma polymorphisms
Eur J Endocrinol, 140 (4), 293-5
PubMed 10097247

Berg JP, Engeland A, Jellum E, Glattre E (1999)
Serum dehydroepiandrosterone sulfate concentration and thyroid cancer risk: a matched case control study
Thyroid, 9 (3), 285-8
PubMed 10211606

Berg JP, Haug E (1999)
Vitamin D: a hormonal regulator of the cAMP signaling pathway
Crit Rev Biochem Mol Biol, 34 (5), 315-23
PubMed 10565677

Distante S, Berg JP, Lande K, Haug E, Bell H (1999)
High prevalence of the hemochromatosis-associated Cys282Tyr HFE gene mutation in a healthy Norwegian population in the city of Oslo, and its phenotypic expression
Scand J Gastroenterol, 34 (5), 529-34
PubMed 10423072

Feleke Y, Abdulkadir J, Mshana R, Mekbib TA, Brunvand L, Berg JP, Falch JA (1999)
Low levels of serum calcidiol in an African population compared to a North European population
Eur J Endocrinol, 141 (4), 358-60
PubMed 10526248

Publications 1998

Berg JP (1998)
Clues to a possible new variant of thyroid hormone resistance
Eur J Endocrinol, 139 (1), 16-7
PubMed 9703372

Berg JP (1998)
Stronger bonds between 25-hydroxyvitamin D 1alpha-hydroxylase and pseudovitamin D-deficiency rickets
Eur J Endocrinol, 138 (3), 264-5
PubMed 9539299

Berg JP (1998)
Oestrogens--essential for reproduction in males, too
Eur J Endocrinol, 138 (5), 497-8
PubMed 9625359

Berg JP (1998)
Glucocorticoid-stimulated gene expression knocked out by knock-in mutation
Eur J Endocrinol, 139 (5), 479-80
PubMed 9849810

Erichsen KE, Berg JP, Torjesen PA, Haug E, Johannesen O (1998)
[Thyroid hormone resistance. Clinical, biochemical and genetic study of a family]
Tidsskr Nor Laegeforen, 118 (4), 525-9
PubMed 9520578

Thorsby P, Undlien DE, Berg JP, Thorsby E, Birkeland KI (1998)
[Diabetes mellitus--a complex interaction between heredity and environment]
Tidsskr Nor Laegeforen, 118 (16), 2519-24
PubMed 9667132

Publications 1997

Abdulkadir J, Feleke Y, Berg JP, Falch JA, Odegaard OR (1997)
Absence of the factor V Leiden mutation in Ethiopians
Thromb Res, 86 (5), 431-2
PubMed 9211636

Berg JP (1997)
The adipocyte fatty acid-binding protein links obesity and insulin resistance
Eur J Endocrinol, 136 (5), 467-8
PubMed 9186264

Berg JP (1997)
Autocrine/paracrine cell death in Hashimoto's thyroiditis
Eur J Endocrinol, 137 (2), 122-3
PubMed 9272098

Gunnes M, Berg JP, Halse J, Lehmann EH (1997)
Lack of relationship between vitamin D receptor genotype and forearm bone gain in healthy children, adolescents, and young adults
J Clin Endocrinol Metab, 82 (3), 851-5
PubMed 9062495

Ree AH, Florenes VA, Berg JP, Maelandsmo GM, Nesland JM, Fodstad O (1997)
High levels of messenger RNAs for tissue inhibitors of metalloproteinases (TIMP-1 and TIMP-2) in primary breast carcinomas are associated with development of distant metastases
Clin Cancer Res, 3 (9), 1623-8
PubMed 9815852

Publications 1996

Berg JP, Falch JA, Haug E (1996)
Fracture rate, pre- and postmenopausal bone mass and early and late postmenopausal bone loss are not associated with vitamin D receptor genotype in a high-endemic area of osteoporosis
Eur J Endocrinol, 135 (1), 96-100
PubMed 8765980

de Blécourt RA, Roddi R, Berg JP, Bloem JJ (1996)
Nasal dysplasia
Ann Plast Surg, 37 (6), 633-7
PubMed 8988777

Publications 1994

Berg JP, Glattre E, Haldorsen T, Høstmark AT, Bay IG, Johansen AF, Jellum E (1994)
Longchain serum fatty acids and risk of thyroid cancer: a population-based case-control study in Norway
Cancer Causes Control, 5 (5), 433-9
PubMed 7999965

Berg JP, Liane KM, Bjørhovde SB, Bjøro T, Torjesen PA, Haug E (1994)
Vitamin D receptor binding and biological effects of cholecalciferol analogues in rat thyroid cells
J Steroid Biochem Mol Biol, 50 (3-4), 145-50
PubMed 8049143

Berg JP, Ree AH, Sandvik JA, Taskén K, Landmark BF, Torjesen PA, Haug E (1994)
1,25-dihydroxyvitamin D3 alters the effect of cAMP in thyroid cells by increasing the regulatory subunit type II beta of the cAMP-dependent protein kinase
J Biol Chem, 269 (51), 32233-8
PubMed 7798223

Berg JP, Sandvik JA, Ree AH, Sørnes G, Bjøro T, Torjesen PA, Gordeladze JO, Haug E (1994)
1,25-Dihydroxyvitamin D3 attenuates adenylyl cyclase activity in rat thyroid cells: reduction of thyrotropin receptor number and increase in guanine nucleotide-binding protein Gi-2 alpha
Endocrinology, 135 (2), 595-602
PubMed 8033808

Sørnes S, Bjøro T, Berg JP, Torjesen PA, Haug E (1994)
Calcitriol attenuates the basal and vasoactive intestinal peptide-stimulated cAMP production in prolactin-secreting rat pituitary (GH4C1) cells
Mol Cell Endocrinol, 101 (1-2), 183-8
PubMed 9397951

Publications 1993

Berg JP, Torjesen PA, Haug E (1993)
1,25-dihydroxyvitamin D3 attenuates TSH and 8-(4-chlorophenylthio)-cAMP-stimulated growth and iodide uptake by rat thyroid cells (FRTL-5)
Thyroid, 3 (3), 245-51
PubMed 8257867

Glattre E, Haldorsen T, Berg JP, Stensvold I, Solvoll K (1993)
Norwegian case-control study testing the hypothesis that seafood increases the risk of thyroid cancer
Cancer Causes Control, 4 (1), 11-6
PubMed 8431525

Publications 1991

Berg JP, Sørnes G, Torjesen PA, Haug E (1991)
Cholecalciferol metabolites attenuate cAMP production in rat thyroid cells (FRTL-5)
Mol Cell Endocrinol, 76 (1-3), 201-6
PubMed 1668203

Berg JP, Torjesen PA, Haug E (1991)
Calcitriol receptors in rat thyroid follicular cells (FRTL-5)
Acta Endocrinol (Copenh), 125 (5), 574-80
PubMed 1661998

Publications 1989

de Groen JH, Berg JP, Mays HE, Sanches H, ten Velde GP, Visser BF (1989)
[Snoring as a symptom of severe respiratory obstruction during sleep: causes and results]
Ned Tijdschr Geneeskd, 133 (30), 1496-501
PubMed 2797251

van Deenen WL, Lamers WP, Pasmans-Woudstra TC, Berg JP (1989)
An unconventional view of dacryocystorhinostomy
Doc Ophthalmol, 72 (3-4), 225-33
PubMed 2625084

Publications 1984

Wibe E, Berg JP, Tveit KM, Nesland JM, Lunde S (1984)
Multicellular spheroids grown directly from human tumour material
Int J Cancer, 34 (1), 21-6
PubMed 6746116