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Publications by Jens Petter Berg

185 publications found

Original articles

Næss-Andresen ML, Jenum AK, Berg JP, Falk RS, Sletner L (2023)
The impact of recommending iron supplements to women with depleted iron stores in early pregnancy on use of supplements, and factors associated with changes in iron status from early pregnancy to postpartum in a multi-ethnic population-based cohort
BMC Pregnancy Childbirth, 23 (1), 350
DOI 10.1186/s12884-023-05668-5, PubMed 37179290

Jansen A, Aaseth JO, Lyche JL, Berg JP, Müller MHB, Lydersen S, Farup PG (2022)
Do changes in persistent organic pollutants after bariatric surgery cause endocrine disruption?
Chemosphere, 313, 137461
DOI 10.1016/j.chemosphere.2022.137461, PubMed 36470361

Sundet BK, Kreyberg I, Staff AC, Carlsen KCL, Bains KES, Berg JP, Granum B, Haugen G, Hedlin G, Jonassen CM, Nordhagen LS, Nordlund B, Rehbinder EM, Rudi K, Rueegg CS, Sjøborg KD, Skjerven HO, Söderhäll C, Vettukattil R, Sugulle M (2022)
The effect of nicotine-containing products and fetal sex on placenta-associated circulating midpregnancy biomarkers
Biol Sex Differ, 13 (1), 39
DOI 10.1186/s13293-022-00443-1, PubMed 35841068

Næss-Andresen ML, Jenum AK, Berg JP, Falk RS, Sletner L (2022)
Prevalence of postpartum anaemia and iron deficiency by serum ferritin, soluble transferrin receptor and total body iron, and associations with ethnicity and clinical factors: a Norwegian population-based cohort study
J Nutr Sci, 11, e46
DOI 10.1017/jns.2022.45, PubMed 35754987

Øystese KAB, Casar-Borota O, Berg-Johnsen J, Berg JP, Bollerslev J (2022)
Distribution of E- and N-cadherin in subgroups of non-functioning pituitary neuroendocrine tumours
Endocrine, 77 (1), 151-159
DOI 10.1007/s12020-022-03051-6, PubMed 35674926

Rognes IN, Pischke SE, Ottestad W, Røislien J, Berg JP, Johnson C, Eken T, Mollnes TE (2021)
Increased complement activation 3 to 6 h after trauma is a predictor of prolonged mechanical ventilation and multiple organ dysfunction syndrome: a prospective observational study
Mol Med, 27 (1), 35
DOI 10.1186/s10020-021-00286-3, PubMed 33832430

Johannessen KA, Wear NKS, Toska K, Hansbo M, Berg JP, Fosse E (2021)
Pathologic Blood Samples Tolerate Exposure to Vibration and High Turbulence in Simulated Drone Flights, but Plasma Samples Should be Centrifuged After Flight
IEEE J Transl Eng Health Med, 9, 4000110
DOI 10.1109/JTEHM.2021.3053172, PubMed 33542860

Mitlid-Mork B, Bowe S, Gran JM, Bolstad N, Berg JP, Redman CW, Staff AC, Sugulle M (2020)
Maternal placental growth factor and soluble fms-like tyrosine kinase-1 reference ranges in post-term pregnancies: A prospective observational study
PLoS One, 15 (10), e0240473
DOI 10.1371/journal.pone.0240473, PubMed 33079955

Eieland AK, Normann KR, Sundaram AYM, Nyman TA, Øystese KAB, Lekva T, Berg JP, Bollerslev J, Olarescu NC (2020)
Distinct Pattern of Endoplasmic Reticulum Protein Processing and Extracellular Matrix Proteins in Functioning and Silent Corticotroph Pituitary Adenomas
Cancers (Basel), 12 (10)
DOI 10.3390/cancers12102980, PubMed 33066652

Atukunda P, Muhoozi GK, Diep LM, Berg JP, Westerberg AC, Iversen PO (2020)
The association of urine markers of iodine intake with development and growth among children in rural Uganda: a secondary analysis of a randomised education trial
Public Health Nutr, 24 (12), 3730-3739
DOI 10.1017/S1368980020001603, PubMed 32654677

Berg JP, Gladhaug IP (2020)
[The thesis defence is part of the doctoral degree examination]
Tidsskr Nor Laegeforen, 140 (9)
DOI 10.4045/tidsskr.20.0328, PubMed 32549008

Bornstedt ME, Gjerlaugsen N, Olstad OK, Berg JP, Bredahl MK, Thorsby PM (2020)
Vitamin D metabolites influence expression of genes concerning cellular viability and function in insulin producing β-cells (INS1E)
Gene, 746, 144649
DOI 10.1016/j.gene.2020.144649, PubMed 32251702

Jansen A, Berg JP, Klungsøyr O, Müller MHB, Lyche JL, Aaseth JO (2020)
The Influence of Persistent Organic Pollutants on Thyroidal, Reproductive and Adrenal Hormones After Bariatric Surgery
Obes Surg, 30 (4), 1368-1378
DOI 10.1007/s11695-019-04273-w, PubMed 31721064

Brusletto BS, Løberg EM, Hellerud BC, Goverud IL, Berg JP, Olstad OK, Gopinathan U, Brandtzaeg P, Øvstebø R (2020)
Extensive Changes in Transcriptomic "Fingerprints" and Immunological Cells in the Large Organs of Patients Dying of Acute Septic Shock and Multiple Organ Failure Caused by Neisseria meningitidis
Front Cell Infect Microbiol, 10, 42
DOI 10.3389/fcimb.2020.00042, PubMed 32154187

Beitland S, Nakstad ER, Berg JP, Trøseid AS, Brusletto BS, Brunborg C, Lundqvist C, Sunde K (2019)
Urine β-2-Microglobulin, Osteopontin, and Trefoil Factor 3 May Early Predict Acute Kidney Injury and Outcome after Cardiac Arrest
Crit Care Res Pract, 2019, 4384796
DOI 10.1155/2019/4384796, PubMed 31205786

Næss-Andresen ML, Eggemoen ÅR, Berg JP, Falk RS, Jenum AK (2019)
Serum ferritin, soluble transferrin receptor, and total body iron for the detection of iron deficiency in early pregnancy: a multiethnic population-based study with low use of iron supplements
Am J Clin Nutr, 109 (3), 566-575
DOI 10.1093/ajcn/nqy366, PubMed 30831600

Schwettmann L, Berg JP, Sandberg S (2018)
[Not Available]
Tidsskr Nor Laegeforen, 138 (15)
DOI 10.4045/tidsskr.18.0633, PubMed 30277042

Hassel B, Mariussen E, Idland AV, Dahl GT, Ræder J, Frihagen F, Berg JP, Chaudhry FA, Wyller TB, Watne LO (2018)
CSF sodium at toxic levels precedes delirium in hip fracture patients
Neurotoxicology, 69, 11-16
DOI 10.1016/j.neuro.2018.08.010, PubMed 30149051

Øystese KAB, Berg JP, Normann KR, Zucknick M, Casar-Borota O, Bollerslev J (2018)
The role of E and N-cadherin in the postoperative course of gonadotroph pituitary tumours
Endocrine, 62 (2), 351-360
DOI 10.1007/s12020-018-1679-0, PubMed 30051197

Pasovic L, Utheim TP, Reppe S, Khan AZ, Jackson CJ, Thiede B, Berg JP, Messelt EB, Eidet JR (2018)
Improvement of Storage Medium for Cultured Human Retinal Pigment Epithelial Cells Using Factorial Design
Sci Rep, 8 (1), 5688
DOI 10.1038/s41598-018-24121-8, PubMed 29632395

Gopinathan U, Redalen KR, Trøseid AM, Kierulf P, Brandtzaeg P, Ree AH, Berg JP, Øvstebø R (2018)
Large-scale reduction of tyrosine kinase activities in human monocytes stimulated in vitro with N. meningitidis
PLoS One, 13 (1), e0181912
DOI 10.1371/journal.pone.0181912, PubMed 29357362

Aass HCD, Hellum M, Trøseid AS, Brandtzaeg P, Berg JP, Øvstebø R, Henriksson CE (2018)
Whole-blood incubation with the Neisseria meningitidis lpxL1 mutant induces less pro-inflammatory cytokines than the wild type, and IL-10 reduces the MyD88-dependent cytokines
Innate Immun, 24 (2), 101-111
DOI 10.1177/1753425917749299, PubMed 29313733

Vistnes M, Tapia G, Mårild K, Midttun Ø, Ueland PM, Viken MK, Magnus P, Berg JP, Gillespie KM, Skrivarhaug T, Njølstad PR, Joner G, Størdal K, Stene LC (2017)
Plasma immunological markers in pregnancy and cord blood: A possible link between macrophage chemo-attractants and risk of childhood type 1 diabetes
Am J Reprod Immunol, 79 (3)
DOI 10.1111/aji.12802, PubMed 29266506

Gopinathan U, Øvstebø R, Brusletto BS, Olstad OK, Kierulf P, Brandtzaeg P, Berg JP (2017)
Transcriptomic data from two primary cell models stimulating human monocytes suggest inhibition of oxidative phosphorylation and mitochondrial function by N. meningitidis which is partially up-regulated by IL-10
BMC Immunol, 18 (1), 46
DOI 10.1186/s12865-017-0229-5, PubMed 29078758

Øystese KA, Casar-Borota O, Normann KR, Zucknick M, Berg JP, Bollerslev J (2017)
Estrogen Receptor α, a Sex-Dependent Predictor of Aggressiveness in Nonfunctioning Pituitary Adenomas: SSTR and Sex Hormone Receptor Distribution in NFPA
J Clin Endocrinol Metab, 102 (9), 3581-3590
DOI 10.1210/jc.2017-00792, PubMed 28911153

Brusletto BS, Hellerud BC, Løberg EM, Goverud IL, Vege Å, Berg JP, Brandtzaeg P, Øvstebø R (2017)
Traceability and distribution of Neisseria meningitidis DNA in archived post mortem tissue samples from patients with systemic meningococcal disease
BMC Clin Pathol, 17, 10
DOI 10.1186/s12907-017-0049-9, PubMed 28824331

Klingenberg O, Furuset T, Hestbråten CR, Hallberg MH, Steiro A, Orset IR, Berg JP (2017)
HbA1c analysis by capillary electrophoresis - comparison with chromatography and an immunological method
Scand J Clin Lab Invest, 77 (6), 458-464
DOI 10.1080/00365513.2017.1338747, PubMed 28644050

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
DOI 10.1177/1753425916684201, PubMed 28024455

Waage C, Jenum AK, Mdala I, Berg JP, Richardsen K, Birkeland K (2016)
Associations between gestational diabetes mellitus and elevated HbA_1c early postpartum in a multi-ethnic population
Prim Care Diabetes, 11 (2), 132-139
DOI 10.1016/j.pcd.2016.09.007, PubMed 27771271

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
DOI 10.1186/s13054-016-1503-2, PubMed 27716377

Normann KR, Øystese KAB, 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
DOI 10.1016/j.mce.2016.08.030, 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
DOI 10.1371/journal.pone.0161123, PubMed 27529347

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
DOI 10.1373/clinchem.2016.258962, PubMed 27384539

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
DOI 10.1111/pedi.12360, PubMed 26791677

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
DOI 10.1159/000443789, PubMed 27058253

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
DOI 10.1002/mgg3.137, PubMed 26029710

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
DOI 10.1002/jbmr.2342, PubMed 25155887

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

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
DOI 10.1016/j.neulet.2014.10.006, PubMed 25451724

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
DOI 10.1177/1753425914547743, PubMed 25233959

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
DOI 10.1371/journal.pone.0105836, PubMed 25153832

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
DOI 10.3390/nu6051913, 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
DOI 10.3109/00365513.2014.884240, 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
DOI 10.1016/j.jpsychires.2014.01.017, PubMed 24534618

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
DOI 10.1016/j.thromres.2013.12.031, PubMed 24423888

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
DOI 10.1210/en.2013-1051, 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
DOI 10.3109/00365513.2013.765028, PubMed 23360186

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
DOI 10.1007/s12020-012-9871-0, PubMed 23315031

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
DOI 10.1371/journal.pone.0066927, PubMed 23825587

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
DOI 10.1016/j.bone.2012.11.015, PubMed 23195995

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
DOI 10.1016/j.clnu.2012.09.004, PubMed 23043722

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
DOI 10.1186/1471-2199-13-29, PubMed 22989091

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
DOI 10.1128/IAI.00386-12, 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
DOI 10.1097/MBC.0b013e328354a256, PubMed 22732249

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
DOI 10.1186/1756-0500-5-425, 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
DOI 10.1210/jc.2012-1760, PubMed 22585092

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
DOI 10.3389/fnhum.2012.00019, PubMed 22347858

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
DOI 10.1258/acb.2011.201201, PubMed 22296778

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
DOI 10.1371/journal.pone.0052399, PubMed 23285025

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
DOI 10.1371/journal.pone.0030564, PubMed 22291990

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
DOI 10.1371/journal.pone.0037295, PubMed 22649517

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
DOI 10.1111/j.1365-2265.2011.04163.x, PubMed 21722151

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
DOI 10.1177/1753425911428230, PubMed 22180561

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
DOI 10.1111/j.1365-2265.2011.04109.x, PubMed 21595730

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
DOI 10.1002/cyto.a.21147, PubMed 21990118

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
DOI 10.1177/1479164111416831, PubMed 21844128

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
DOI 10.4045/tidsskr.10.1160, PubMed 21423304

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
DOI 10.4088/JCP.10m06068yel, PubMed 21367348

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

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
DOI 10.1258/acb.2010.010265, PubMed 21233327

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
DOI 10.1515/CCLM.2011.026, PubMed 21155691

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
DOI 10.1155/2011/739751, 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
DOI 10.1186/1471-2172-11-21, PubMed 20441576

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
DOI 10.1210/jc.2009-2197, PubMed 20335450

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
DOI 10.1111/j.1365-2265.2010.03805.x, PubMed 20346000

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

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
DOI 10.1210/jc.2008-1005, PubMed 19509109

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
DOI 10.1038/sj.bjc.6604865, PubMed 19156140

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
DOI 10.1080/00365510802538188, PubMed 18972257

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
DOI 10.1007/s10585-009-9248-9, PubMed 19294521

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
DOI 10.1530/EJE-08-0550, 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
DOI 10.1111/j.1755-3768.2008.01300.x, PubMed 18631328

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
DOI 10.1111/j.1399-5448.2007.00263.x, PubMed 18211635

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
DOI 10.1210/jc.2007-2272, PubMed 18230656

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
DOI 10.1080/00365510701884592, PubMed 19378427

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
DOI 10.1111/j.1365-2265.2007.03065.x, PubMed 17941904

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
DOI 10.1016/j.jphotobiol.2007.09.003, PubMed 18029190

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
DOI 10.1002/pros.20577, PubMed 17624920

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
DOI 10.1111/j.1600-0420.2007.00913.x, PubMed 17488318

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
DOI 10.1016/j.lungcan.2006.11.013, PubMed 17207891

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
DOI 10.1016/j.jsbmb.2006.12.031, PubMed 17229569

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
DOI 10.1007/s10549-006-9331-8, 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
DOI 10.1007/s00125-006-0292-6, PubMed 16691379

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
DOI 10.1007/s00428-005-0145-6, PubMed 16411132

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
DOI 10.1080/00365510510013622, PubMed 16025839

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
DOI 10.1080/00365520310003444, PubMed 12940442

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
DOI 10.1046/j.0106-9543.2002.01672.x, PubMed 12100578

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
DOI 10.1080/003655200453665, PubMed 11199371

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
DOI 10.1136/gut.47.4.575, PubMed 10986220

Berg JP (2000)
Pygmy mouse gene mutation protects against obesity
Eur J Endocrinol, 143 (3), 317-8
DOI 10.1530/eje.0.1430317, 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
DOI 10.1530/eje.0.1430261, PubMed 10913946

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
DOI 10.1016/s1095-6433(00)00211-7, 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
DOI 10.1007/BF03343737, PubMed 10908161

Berg JP (2000)
Leptin is a potent anti-diabetic in mice with lipodystrophy and insulin resistance
Eur J Endocrinol, 142 (2), 114-6
DOI 10.1530/eje.0.1420114, PubMed 10664517

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
DOI 10.1530/eje.0.1410321, PubMed 10526241

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
DOI 10.1530/eje.0.1410358, PubMed 10526248

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
DOI 10.1080/003655299750026290, PubMed 10423072

Berg JP (1999)
Pluripotent PPARgamma polymorphisms
Eur J Endocrinol, 140 (4), 293-5
DOI 10.1530/eje.0.1400293, 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
DOI 10.1089/thy.1999.9.285, PubMed 10211606

Berg JP (1998)
Clues to a possible new variant of thyroid hormone resistance
Eur J Endocrinol, 139 (1), 16-7
DOI 10.1530/eje.0.1390016, PubMed 9703372

Berg JP (1998)
Oestrogens--essential for reproduction in males, too
Eur J Endocrinol, 138 (5), 497-8
DOI 10.1530/eje.0.1380497, PubMed 9625359

Berg JP (1998)
Stronger bonds between 25-hydroxyvitamin D 1alpha-hydroxylase and pseudovitamin D-deficiency rickets
Eur J Endocrinol, 138 (3), 264-5
DOI 10.1530/eje.0.1380264, PubMed 9539299

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

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

Berg JP (1997)
Autocrine/paracrine cell death in Hashimoto's thyroiditis
Eur J Endocrinol, 137 (2), 122-3
DOI 10.1530/eje.0.1370122, 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
DOI 10.1210/jcem.82.3.3814, PubMed 9062495

de Blécourt RA, Roddi R, Berg JP, Bloem JJ (1996)
Nasal dysplasia
Ann Plast Surg, 37 (6), 633-7
DOI 10.1097/00000637-199612000-00011, PubMed 8988777

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
DOI 10.1530/eje.0.1350096, PubMed 8765980

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, 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
DOI 10.1007/BF01694757, 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
DOI 10.1016/0960-0760(94)90021-3, PubMed 8049143

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
DOI 10.1210/endo.135.2.8033808, 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
DOI 10.1016/0303-7207(94)90233-x, PubMed 9397951

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
DOI 10.1089/thy.1993.3.245, 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
DOI 10.1007/BF00051708, PubMed 8431525

Berg JP, Torjesen PA, Haug E (1991)
Calcitriol receptors in rat thyroid follicular cells (FRTL-5)
Acta Endocrinol (Copenh), 125 (5), 574-80
DOI 10.1530/acta.0.1250574, PubMed 1661998

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
DOI 10.1016/0303-7207(91)90274-v, PubMed 1668203

van Deenen WL, Lamers WP, Pasmans-Woudstra TC, Berg JP (1989)
An unconventional view of dacryocystorhinostomy
Doc Ophthalmol, 72 (3-4), 225-33
DOI 10.1007/BF00153489, PubMed 2625084

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

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
DOI 10.1002/ijc.2910340105, PubMed 6746116

Review articles

Vikøren TB, Berg JP, Berg TJ (2014)
[Sources of error when using haemoglobin A1c]
Tidsskr Nor Laegeforen, 134 (4), 417-21
DOI 10.4045/tidsskr.13.0938, PubMed 24569741

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
DOI 10.1016/j.pnpbp.2011.03.008, PubMed 21420462

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
DOI 10.1016/j.pnpbp.2010.08.013, PubMed 20800085

Bollerslev J, Fougner SL, Berg JP (2009)
New directions in pharmacological treatment of acromegaly
Expert Opin Investig Drugs, 18 (1), 13-22
DOI 10.1517/13543780802554357, PubMed 19053878

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

Berg JP, Haug E (1999)
Vitamin D: a hormonal regulator of the cAMP signaling pathway
Crit Rev Biochem Mol Biol, 34 (5), 315-23
DOI 10.1080/10409239991209327, PubMed 10565677

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

Other articles

Mariampillai JE, Halvorsen LV, Larstorp AC, Heimark S, Waldum-Grevbo B, Kjeldsen SE, Nordby G, Stenehjem AE, Berg JP, Høieggen A (2023)
[Not Available]
Tidsskr Nor Laegeforen, 143 (12)
DOI 10.4045/tidsskr.22.0822, PubMed 37668137

Berg JP, Gladhaug IP (2020)
The Thesis is part of the doctoral degree
Tidsskr. Nor. Laegeforen., 140 (9), 866-867

Berg JP, Gladhaug IP (2019)
[It is essential to fulfil the purpose of the trial lecture]
Tidsskr Nor Laegeforen, 139 (16)
DOI 10.4045/tidsskr.19.0646, PubMed 31686487

Berg JP, Gladhaug IP (2019)
It is important that the purpose of the trial lecture is fulfilled
Tidsskr. Nor. Laegeforen., 139 (16), 1534

Schwettmann L, Berg JP, Sandberg S (2018)
HbA1c must be indicated in mmol/mol
Tidsskr. Nor. Laegeforen., 138 (15), 1404-1405

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, 139 (5), 1696-1698
DOI 10.1016/j.jaci.2016.10.016, PubMed 27865861

Berg JP (2012)
Statement of retraction. Biomarkers of alcoholism: an updated review
Scand J Clin Lab Invest, 72 (4), 343
DOI 10.3109/00365513.2012.686788, PubMed 22724629

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
DOI 10.1002/ajh.23121, PubMed 22410758

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
DOI 10.1111/j.1537-2995.2012.03620.x, 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
Clin Chem Lab Med, 50 (3), 411-3
DOI 10.1515/cclm-2011-0904, 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
Scand J Clin Lab Invest, 72 (2), 89-91
DOI 10.3109/00365513.2011.654052, 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, 58 (3), 483-5
DOI 10.1373/clinchem.2011.178426, PubMed 22302921

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
DOI 10.1016/j.clinbiochem.2011.12.011, PubMed 22297270

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
DOI 10.1016/j.cca.2012.01.009, PubMed 22261017

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
DOI 10.1002/ajh.21966, PubMed 21351119

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
DOI 10.1016/j.clinbiochem.2010.11.008, PubMed 21183162

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
DOI 10.1111/j.1537-2995.2010.03014.x, 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
Scand J Clin Lab Invest, 71 (3), 177-8
DOI 10.3109/00365513.2010.550476, 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
Clin Chem, 57 (3), 359-60
DOI 10.1373/clinchem.2010.160721, PubMed 21173108

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
DOI 10.1016/j.cca.2010.12.015, PubMed 21159312

Berg JP (2002)
A molecular switch for parathyroid cell differentiation
Eur J Endocrinol, 146 (3), 281-2
DOI 10.1530/eje.0.1460281, PubMed 11888832

Birkeland KI, Berg JP (2001)
Type 2 diabetes--preventable, but how?
Eur J Endocrinol, 145 (5), 573-5
DOI 10.1530/eje.0.1450573, 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
DOI 10.1530/eje.0.1440457, PubMed 11331210

Berg JP (1998)
Glucocorticoid-stimulated gene expression knocked out by knock-in mutation
Eur J Endocrinol, 139 (5), 479-80
DOI 10.1530/eje.0.1390479, PubMed 9849810

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
DOI 10.1016/s0049-3848(97)00090-x, PubMed 9211636

Berg JP (1997)
The adipocyte fatty acid-binding protein links obesity and insulin resistance
Eur J Endocrinol, 136 (5), 467-8
DOI 10.1530/eje.0.1360467, PubMed 9186264

Books

Berg JP, Kierulf P (2006)
Biomarkører
In Norsk epidemiologi, Norsk forening for epidemiologi, Bergen, 16(2006)nr 1, 64 s.
BIBSYS 06068237x

Berg JP (2005)
Innledning til en konstitutiv kunnskapsteori om retten: og andre fragmenter til en post-eckhoffiansk juridisk argumentasjonsteori
[J.P. Berg], [Oslo], XVII, 352 s.
BIBSYS 051602199

Berg JP (2000)
Personopplysningsvern i et nytt årtusen: kritikk av personopplysningslovproposisjonen
In Forvaltningsinformatisk notatserie, Universitetet, Oslo, 4/2000 årg. 8, 21 s.
BIBSYS 000895008

Berg JP, Idland K, Braaten M (1999)
Lærernes oppgaver og kompetanse: nye utfordringer for grunnskolen : et debattopplegg fra Norsk lærerlag 1999
In Norsk lærerlags hefte, Lærerlaget, Oslo, nr 8-1999, 28 s.
BIBSYS 991692675

Berg JP, Idland K, Braaten M (1999)
Lærernes oppgaver og kompetanse: nye utfordringer for grunnskolen : debatthefte : Norsk lærerlag 1999
In Norsk lærerlags hefte, Lærerlaget, Oslo, nr 9-1999, 8 s. (fold.)
BIBSYS 991770536

Berg JP (1996)
Finansinstitusjonenes rapporteringsplikt til ØKOKRIM ved mistanke om hvitvasking av penger: et gjennombrudd for "informant"-samfunnet?
In Forvaltningsinformatisk notatserie, Universitetet, Oslo, 3/96, 12 s.
BIBSYS 96182722x

Book chapters

Distante S, Elmberg M, Foss Haug KB, Øvstebø R, Berg JP, Kierulf P, Hultcrantz R, Bell H (2003)
Tumor necrosis factor alpha and its promoter polymorphisms' role in the phenotypic expression of hemachromatosis
In Scandinavian journal of gastroenterology, Taylor & Francis, Basingstoke, 38(2003)8, s.871-7
BIBSYS 041707850

Berg JP, Hemmersbach P (2003)
Dopingkontroll
In Gen-i-alt, Bioteknologinemnden, Oslo, 12(2003)4, s.14-15
BIBSYS 041705459

Berg JP (2002)
Thyreoideahormonresistens
In Thyreoideasykdommer: årsaker, diagnostikk og behandling, Gyldendal akademisk, Oslo, s. 129-133
BIBSYS 031265162

Distante S, Bjøro K, Hellum K, Myrvang B, Berg JP, Skaug K, Raknerud N, Bell H (2002)
Raised serum ferritin predicts non-response to interferonand ribavirin treatment in patients with chronic hepatitis C-infection
In Journal of hepatology, Munksgaard, København, 36(2002)Suppl 1, s. 233
BIBSYS 03142631x

Berg JP (2002)
A molecular switch for parathyroid cell differentiation
In European journal of endocrinology, BioScientifa Ltd., Bristol, 143(2002)nr 3, s. 281-282
BIBSYS 03126509x

Birkeland KI, Berg JP (2001)
Type 2 diabetes: preventable, but how?
In European journal of endocrinology, BioScientifa Ltd., Bristol, 145(2001)nr 5, s.573-575
BIBSYS 022029834

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
In European journal of endocrinology, BioScientifa Ltd., Bristol, 144(2001)nr 5, s.457-459
BIBSYS 02206138x

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 hemachromatosis in Oslo, Norway. Excessive oral iron intake may lead to secondary hemachromatosis even in the HFE C282Y mutation negative subjects
In Scandinavian journal of gastroenterology, Taylor & Francis, Basingstoke, 35(2000)nr 12, s. 1301-1307
BIBSYS 010706097

Distante S, Berg JP, Lande K, Haug E, Bell H (2000)
HFE gene mutation (C282Y) and phenotypic expression amonga hospitalised population in a high prevalence area of haemochromatosis
In Gut, British Medical Association, London, 47(2000)nr 4, s. 575-579
BIBSYS 010719873

Berg JP, Lehmann EH, Stakkestad JA, Haug E, Halse J (2000)
The Sp1 binding site polymorphism in the collagen type I alpha 1 (COLIA 1) gene is not associated with bone mineral density in healthy children , adolescents, and young adults
In European journal of endocrinology, BioScientifa Ltd., Bristol, 143(2000)nr 2, s.261-265
BIBSYS 010828613

Theses

Berg JP (2008)
Vitenskapsteoretiske og moralfilosofiske grunnproblemer ien postrettsrealistisk norsk rettsvitenskap
[Jens Petter Berg], [Oslo] ([Ny utg.]), XVI, 323 s.
BIBSYS 080872735

Berg JP (2008)
Rett og rimelighet i moralsk belysning: og andre grunnproblemer i norsk rettsliv
In Complex, Senter for rettsinformatikk, Oslo, nr. 8/2008, XIX, 401 s.
BIBSYS 090044363, ISBN 978-82-7226-117-6

Berg JP (2007)
Vitenskapsteoretiske og moralfilosofiske grunnproblemer ien postrettsrealistisk norsk rettsvitenskap
[J.P.Berg], [Oslo], 317 s.
BIBSYS 080783112

Berg JP (1995)
Vitamin D - a novel hormonal regulator of the TSH/cAMP-signaling pathway in thyroid cells
Hormone Laboratory, Aker University Hospital : Norwegian Cancer Society : Department of Tissue Culture, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo, 1 b. (flere pag.)
BIBSYS 951075756, ISBN 82-993515-0-2