Publications 2024

Jørgensen SF, Macpherson ME, Bjørnetrø T, Holm K, Kummen M, Rashidi A, Michelsen AE, Lekva T, Halvorsen B, Trøseid M, Mollnes TE, Berge RK, Yndestad A, Ueland T, Karlsen TH, Aukrust P, Hov JR, Fevang B (2024)
Retraction Note: Rifaximin alters gut microbiota profile, but does not affect systemic inflammation - a randomized controlled trial in common variable immunodeficiency
Sci Rep, 14 (1), 3704
DOI 10.1038/s41598-024-54117-6, PubMed 38355714

Publications 2023

Braadland PR, Bergquist A, Kummen M, Bossen L, Engesæter LK, Reims HM, Björk I, Grzyb K, Abildgaard A, Småstuen MC, Folseraas T, Trøseid M, Ulvik A, Ueland PM, Melum E, Line PD, Høivik ML, Grønbæk H, Karlsen TH, Vesterhus M, Hov JR (2023)
Clinical and biochemical impact of vitamin B6 deficiency in primary sclerosing cholangitis before and after liver transplantation
J Hepatol, 79 (4), 955-966
DOI 10.1016/j.jhep.2023.05.038, PubMed 37328069

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

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

Schneider KM, Kummen M, Trivedi PJ, Hov JR (2023)
Role of microbiome in autoimmune liver diseases
Hepatology, 80 (4), 965-987
DOI 10.1097/HEP.0000000000000506, PubMed 37369002

Publications 2022

Awoniyi M, Wang J, Ngo B, Meadows V, Tam J, Viswanathan A, Lai Y, Montgomery S, Farmer M, Kummen M, Thingholm L, Schramm C, Bang C, Franke A, Lu K, Zhou H, Bajaj JS, Hylemon PB, Ting J, Popov YV, Hov JR, Francis HL, Sartor RB (2022)
Protective and aggressive bacterial subsets and metabolites modify hepatobiliary inflammation and fibrosis in a murine model of PSC
Gut, 72 (4), 671-685
DOI 10.1136/gutjnl-2021-326500, PubMed 35705368

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

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

Storm-Larsen C, Hande LN, Kummen M, Thunhaug H, Vestad B, Hansen SH, Hovland A, Trøseid M, Lappegård KT, Hov JR (2022)
Reduced gut microbial diversity in familial hypercholesterolemia with no effect of omega-3 polyunsaturated fatty acids intervention - a pilot trial
Scand J Clin Lab Invest, 82 (5), 363-370
DOI 10.1080/00365513.2022.2102540, PubMed 35913798

Publications 2021

Dhillon AK, Rupp C, Bergquist A, Voitl R, Folseraas T, Trøseid M, Midttun Ø, Ueland PM, Karlsen TH, Vesterhus M, Kummen M, Hov JR (2021)
Associations of neopterin and kynurenine-tryptophan ratio with survival in primary sclerosing cholangitis
Scand J Gastroenterol, 56 (4), 443-452
DOI 10.1080/00365521.2021.1880627, PubMed 33583308

Skaarud KJ, Hov JR, Hansen SH, Kummen M, Valeur J, Seljeflot I, Bye A, Paulsen V, Lundin KEA, Trøseid M, Tjønnfjord GE, Iversen PO (2021)
Mortality and microbial diversity after allogeneic hematopoietic stem cell transplantation: secondary analysis of a randomized nutritional intervention trial
Sci Rep, 11 (1), 11593
DOI 10.1038/s41598-021-90976-z, PubMed 34078971

Publications 2020

Kummen M, Solberg OG, Storm-Larsen C, Holm K, Ragnarsson A, Trøseid M, Vestad B, Skårdal R, Yndestad A, Ueland T, Svardal A, Berge RK, Seljeflot I, Gullestad L, Karlsen TH, Aaberge L, Aukrust P, Hov JR (2020)
Rosuvastatin alters the genetic composition of the human gut microbiome
Sci Rep, 10 (1), 5397
DOI 10.1038/s41598-020-62261-y, PubMed 32214138

Kummen M, Thingholm LB, Rühlemann MC, Holm K, Hansen SH, Moitinho-Silva L, Liwinski T, Zenouzi R, Storm-Larsen C, Midttun Ø, McCann A, Ueland PM, Høivik ML, Vesterhus M, Trøseid M, Laudes M, Lieb W, Karlsen TH, Bang C, Schramm C, Franke A, Hov JR (2020)
Altered Gut Microbial Metabolism of Essential Nutrients in Primary Sclerosing Cholangitis
Gastroenterology, 160 (5), 1784-1798.e0
DOI 10.1053/j.gastro.2020.12.058, PubMed 33387530

Macpherson ME, Hov JR, Ueland T, Dahl TB, Kummen M, Otterdal K, Holm K, Berge RK, Mollnes TE, Trøseid M, Halvorsen B, Aukrust P, Fevang B, Jørgensen SF (2020)
Gut Microbiota-Dependent Trimethylamine N-Oxide Associates With Inflammation in Common Variable Immunodeficiency
Front Immunol, 11, 574500
DOI 10.3389/fimmu.2020.574500, PubMed 33042155

Mayerhofer CCK, Kummen M, Holm K, Broch K, Awoyemi A, Vestad B, Storm-Larsen C, Seljeflot I, Ueland T, Bohov P, Berge RK, Svardal A, Gullestad L, Yndestad A, Aukrust P, Hov JR, Trøseid M (2020)
Low fibre intake is associated with gut microbiota alterations in chronic heart failure
ESC Heart Fail, 7 (2), 456-466
DOI 10.1002/ehf2.12596, PubMed 31978943

Sokolova M, Yang K, Hansen SH, Louwe MC, Kummen M, Hov JER, Sjaastad I, Berge RK, Halvorsen B, Aukrust P, Yndestad A, Ranheim T (2020)
NLRP3 inflammasome deficiency attenuates metabolic disturbances involving alterations in the gut microbial profile in mice exposed to high fat diet
Sci Rep, 10 (1), 21006
DOI 10.1038/s41598-020-76497-1, PubMed 33273482

Publications 2019

Dhillon AK, Kremer AE, Kummen M, Boberg KM, Elferink RPO, Karlsen TH, Beuers U, Vesterhus M, Hov JR (2019)
Autotaxin activity predicts transplant-free survival in primary sclerosing cholangitis
Sci Rep, 9 (1), 8450
DOI 10.1038/s41598-019-44762-7, PubMed 31186435

Jørgensen SF, Holm K, Macpherson ME, Storm-Larsen C, Kummen M, Fevang B, Aukrust P, Hov JR (2019)
Selective IgA deficiency in humans is associated with reduced gut microbial diversity
J Allergy Clin Immunol, 143 (5), 1969-1971.e11
DOI 10.1016/j.jaci.2019.01.019, PubMed 30707969

Jørgensen SF, Macpherson ME, Bjørnetrø T, Holm K, Kummen M, Rashidi A, Michelsen AE, Lekva T, Halvorsen B, Trøseid M, Mollnes TE, Berge RK, Yndestad A, Ueland T, Karlsen TH, Aukrust P, Hov JR, Fevang B (2019)
Rifaximin alters gut microbiota profile, but does not affect systemic inflammation - a randomized controlled trial in common variable immunodeficiency
Sci Rep, 9 (1), 167 (Retracted)
DOI 10.1038/s41598-018-35367-7, PubMed 30655568

Kummen M, Hov JR (2019)
The gut microbial influence on cholestatic liver disease
Liver Int, 39 (7), 1186-1196
DOI 10.1111/liv.14153, PubMed 31125502

Rühlemann M, Liwinski T, Heinsen FA, Bang C, Zenouzi R, Kummen M, Thingholm L, Tempel M, Lieb W, Karlsen T, Lohse A, Hov J, Denk G, Lammert F, Krawczyk M, Schramm C, Franke A (2019)
Consistent alterations in faecal microbiomes of patients with primary sclerosing cholangitis independent of associated colitis
Aliment Pharmacol Ther, 50 (5), 580-589
DOI 10.1111/apt.15375, PubMed 31250469

Rühlemann MC, Solovjeva MEL, Zenouzi R, Liwinski T, Kummen M, Lieb W, Hov JR, Schramm C, Franke A, Bang C (2019)
Gut mycobiome of primary sclerosing cholangitis patients is characterised by an increase of Trichocladium griseum and Candida species
Gut, 69 (10), 1890-1892
DOI 10.1136/gutjnl-2019-320008, PubMed 31653787

Publications 2018

Dhillon AK, Kummen M, Trøseid M, Åkra S, Liaskou E, Moum B, Vesterhus M, Karlsen TH, Seljeflot I, Hov JR (2018)
Circulating markers of gut barrier function associated with disease severity in primary sclerosing cholangitis
Liver Int, 39 (2), 371-381
DOI 10.1111/liv.13979, PubMed 30269440

Hoel H, Hove-Skovsgaard M, Hov JR, Gaardbo JC, Holm K, Kummen M, Rudi K, Nwosu F, Valeur J, Gelpi M, Seljeflot I, Ueland PM, Gerstoft J, Ullum H, Aukrust P, Nielsen SD, Trøseid M (2018)
Impact of HIV and Type 2 diabetes on Gut Microbiota Diversity, Tryptophan Catabolism and Endothelial Dysfunction
Sci Rep, 8 (1), 6725
DOI 10.1038/s41598-018-25168-3, PubMed 29712976

Kummen M, Mayerhofer CCK, Vestad B, Broch K, Awoyemi A, Storm-Larsen C, Ueland T, Yndestad A, Hov JR, Trøseid M (2018)
Gut Microbiota Signature in Heart Failure Defined From Profiling of 2 Independent Cohorts
J Am Coll Cardiol, 71 (10), 1184-1186
DOI 10.1016/j.jacc.2017.12.057, PubMed 29519360

Publications 2017

Hov JR, Kummen M (2017)
Intestinal microbiota in primary sclerosing cholangitis
Curr Opin Gastroenterol, 33 (2), 85-92
DOI 10.1097/MOG.0000000000000334, PubMed 28030369

Kummen M (2017)
[Not Available]
Tidsskr Nor Laegeforen, 137 (4), 307
DOI 10.4045/tidsskr.16.1055, PubMed 28225247

Tronstad RR, Kummen M, Holm K, von Volkmann HL, Anmarkrud JA, Høivik ML, Moum B, Gilja OH, Hausken T, Baines J, Karlsen TH, Fiskerstrand T, Hov JR (2017)
Guanylate Cyclase C Activation Shapes the Intestinal Microbiota in Patients with Familial Diarrhea and Increased Susceptibility for Crohn's Disease
Inflamm Bowel Dis, 23 (10), 1752-1761
DOI 10.1097/MIB.0000000000001264, PubMed 28902124

Volkmann ER, Hoffmann-Vold AM, Chang YL, Jacobs JP, Tillisch K, Mayer EA, Clements PJ, Hov JR, Kummen M, Midtvedt Ø, Lagishetty V, Chang L, Labus JS, Molberg Ø, Braun J (2017)
Systemic sclerosis is associated with specific alterations in gastrointestinal microbiota in two independent cohorts
BMJ Open Gastroenterol, 4 (1), e000134
DOI 10.1136/bmjgast-2017-000134, PubMed 28761687

Publications 2016

Jørgensen SF, Trøseid M, Kummen M, Anmarkrud JA, Michelsen AE, Osnes LT, Holm K, Høivik ML, Rashidi A, Dahl CP, Vesterhus M, Halvorsen B, Mollnes TE, Berge RK, Moum B, Lundin KE, Fevang B, Ueland T, Karlsen TH, Aukrust P, Hov JR (2016)
Altered gut microbiota profile in common variable immunodeficiency associates with levels of lipopolysaccharide and markers of systemic immune activation
Mucosal Immunol, 9 (6), 1455-1465
DOI 10.1038/mi.2016.18, PubMed 26982597

Kummen M, Holm K, Anmarkrud JA, Nygård S, Vesterhus M, Høivik ML, Trøseid M, Marschall HU, Schrumpf E, Moum B, Røsjø H, Aukrust P, Karlsen TH, Hov JR (2016)
The gut microbial profile in patients with primary sclerosing cholangitis is distinct from patients with ulcerative colitis without biliary disease and healthy controls
Gut, 66 (4), 611-619
DOI 10.1136/gutjnl-2015-310500, PubMed 26887816

Kummen M, Hov JR (2016)
Response to 'Faecal microbiota profiles as diagnostic biomarkers in primary sclerosing cholangitis' by Rühlemann et al
Gut, 66 (4), 755-756
DOI 10.1136/gutjnl-2016-312347, PubMed 27340191

Kummen M, Vesterhus M, Trøseid M, Moum B, Svardal A, Boberg KM, Aukrust P, Karlsen TH, Berge RK, Hov JR (2016)
Elevated trimethylamine-N-oxide (TMAO) is associated with poor prognosis in primary sclerosing cholangitis patients with normal liver function
United European Gastroenterol J, 5 (4), 532-541
DOI 10.1177/2050640616663453, PubMed 28588885

Schrumpf E, Kummen M, Valestrand L, Greiner TU, Holm K, Arulampalam V, Reims HM, Baines J, Bäckhed F, Karlsen TH, Blumberg RS, Hov JR, Melum E (2016)
The gut microbiota contributes to a mouse model of spontaneous bile duct inflammation
J Hepatol, 66 (2), 382-389
DOI 10.1016/j.jhep.2016.09.020, PubMed 27720803

Skagen K, Trøseid M, Ueland T, Holm S, Abbas A, Gregersen I, Kummen M, Bjerkeli V, Reier-Nilsen F, Russell D, Svardal A, Karlsen TH, Aukrust P, Berge RK, Hov JE, Halvorsen B, Skjelland M (2016)
The Carnitine-butyrobetaine-trimethylamine-N-oxide pathway and its association with cardiovascular mortality in patients with carotid atherosclerosis
Atherosclerosis, 247, 64-9
DOI 10.1016/j.atherosclerosis.2016.01.033, PubMed 26868510

Wang J, Thingholm LB, Skiecevičienė J, Rausch P, Kummen M, Hov JR, Degenhardt F, Heinsen FA, Rühlemann MC, Szymczak S, Holm K, Esko T, Sun J, Pricop-Jeckstadt M, Al-Dury S, Bohov P, Bethune J, Sommer F, Ellinghaus D, Berge RK, Hübenthal M, Koch M, Schwarz K, Rimbach G, Hübbe P et al. (2016)
Genome-wide association analysis identifies variation in vitamin D receptor and other host factors influencing the gut microbiota
Nat Genet, 48 (11), 1396-1406
DOI 10.1038/ng.3695, PubMed 27723756

Publications 2013

Kummen M, Schrumpf E, Boberg KM (2013)
Liver abnormalities in bowel diseases
Best Pract Res Clin Gastroenterol, 27 (4), 531-42
DOI 10.1016/j.bpg.2013.06.013, PubMed 24090940