• Gut microbiota-dependent trimethylamine N-oxide associates with inflammation in common variable immunodeficiency 

      Macpherson, Magnhild Eide; Hov, Johannes Espolin Roksund; Ueland, Thor; Dahl, Tuva Børresdatter; Kummen, Martin; Otterdal, Kari; Holm, Kristian; Berge, Rolf Kristian; Mollnes, Tom Eirik; Trøseid, Marius; Halvorsen, Bente; Aukrust, Pål; Fevang, Børre; Jørgensen, Silje Fjellgård (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-16)
      A substantial proportion of patients with common variable immunodeficiency (CVID) have inflammatory and autoimmune complications of unknown etiology. We have previously shown that systemic inflammation in CVID correlates with their gut microbial dysbiosis. The gut microbiota dependent metabolite trimethylamine N-oxide (TMAO) has been linked to several metabolic and inflammatory disorders, but has ...
    • Reduced gut microbial diversity in familial hypercholesterolemia with no effect of omega-3 polyunsaturated fatty acids intervention–a pilot trial 

      Larsen, Christopher Storm; Hande, Liv Nesse; Kummen, Martin; Thunhaug, Hilde; Vestad, Beate; Hansen, Simen Hyll; Hovland, Anders Wilhelm; Trøseid, Marius; Lappegård, Knut Tore; Hov, Johannes Espolin Roksund (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-01)
      Individuals with familial hypercholesterolemia (FH) undergo an aggressive treatment with cholesterollowering drugs to prevent coronary heart disease. Recent evidence suggests an interplay between the gut microbiota, blood lipid levels and lipid-lowering drugs, but this has yet to be studied in individuals with FH. The objective of the study was to characterize the gut microbiota of individuals ...
    • Rifaximin alters gut microbiota profile, but does not affect systemic inflammation - a randomized controlled trial in common variable immunodeficiency 

      Jørgensen, Silje Fjellgård; Macpherson, Magnhild Eide; Bjørnetrø, Tonje; Holm, Kristian; Kummen, Martin; Rashidi, Azita; Michelsen, Annika; Lekva, Tove; Halvorsen, Bente; Trøseid, Marius; Mollnes, Tom Eirik; Berge, Rolf Kristian; Yndestad, Arne; Ueland, Thor; Karlsen, Tom Hemming; Aukrust, Pål; Hov, Johannes Espolin Roksund; Fevang, Børre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-17)
      Common variable immunodeficiency (CVID) patients have reduced gut microbial diversity compared to healthy controls. The reduced diversity is associated with gut leakage, increased systemic inflammation and ten “key” bacteria that capture the gut dysbiosis (dysbiosis index) in CVID. Rifaximin is a broad-spectrum non-absorbable antibiotic known to reduce gut leakage (lipopolysaccharides, LPS) in liver ...
    • Rosuvastatin alters the genetic composition of the human gut microbiome 

      Kummen, Martin; Solberg, Ole Geir; Larsen, Christopher Storm; Holm, Kristian; Ragnarsson, Asgrimur; Trøseid, Marius; Vestad, Beate; Skårdal, Rita; Yndestad, Arne; Ueland, Thor; Svardal, Asbjørn M.; Berge, Rolf Kristian; Seljeflot, Ingebjørg; Gullestad, Lars; Karlsen, Tom Hemming; Aaberge, Lars; Aukrust, Pål; Hov, Johannes Espolin Roksund (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-25)
      The gut microbiome contributes to the variation of blood lipid levels, and secondary bile acids are associated with the effect of statins. Yet, our knowledge of how statins, one of our most common drug groups, affect the human microbiome is scarce. We aimed to characterize the effect of rosuvastatin on gut microbiome composition and inferred genetic content in stool samples from a randomized controlled ...