• Altered Gut Microbial Metabolism of Essential Nutrients in Primary Sclerosing Cholangitis 

      Kummen, Martin; Thingholm, Louise B.; Rühlemann, Malte C.; Holm, Kristian; Hansen, Simen Hyll; Moitinho-Silva, Lucas; Liwinski, Timur; Zenouzi, Roman; Larsen, Christopher Storm; Midttun, Øivind; McCann, Adrian; Ueland, Per Magne; Høivik, Marte Lie; Vesterhus, Mette; Trøseid, Marius; Laudes, Matthias; Lieb, Wolfgang; Karlsen, Tom Hemming; Bang, Corinna; Schramm, Christoph; Franke, Andre; Hov, Johannes Espolin Roksund (Journal article; Peer reviewed, 2021)
      Background & Aims To influence host and disease phenotype, compositional microbiome changes, which have been demonstrated in patients with primary sclerosing cholangitis (PSC), must be accompanied by functional changes. ...
    • Baked cod consumption delayed the development of kidney and liver dysfunction and affected plasma amino acid concentrations, but did not affect blood pressure, blood glucose or liver triacylglycerol concentrations in obese fa/fa Zucker rats. 

      Vikøren, Linn A.; Drotningsvik, Aslaug; Midttun, Øivind; McCann, Adrian; Bergseth, Marthe Tønder; Austgulen, Maren H.; Mellgren, Gunnar; Ueland, Per Magne; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2021)
      Obesity is associated with changes in amino acid metabolism, and studies show that ingestion of fish proteins influence amino acid composition in plasma and urine, in addition to affecting risk factors for metabolic syndrome. ...
    • Biomarkers and Fatty Fish Intake: A Randomized Controlled Trial in Norwegian Preschool Children 

      Solvik, Beate Stokke; Øyen, Jannike; Kvestad, Ingrid; Markhus, Maria Wik; Ueland, Per Magne; McCann, Adrian; Strand, Tor Arne (Journal article; Peer reviewed, 2021)
      Background Biomarkers such as omega-3 (n–3) PUFAs, urinary iodine concentration (UIC), 1-methylhistidine (1-MH), and trimethylamine N-oxide (TMAO) have been associated with fish intake in observational studies, but data ...
    • Cerebrospinal fluid quinolinic acid is strongly associated with delirium and mortality in hip fracture patients 

      Watne, Leiv Otto; Pollmann, Christian Thomas; Neerland, Bjørn Erik; Quist-Paulsen, Else; Halaas, Nathalie Bodd; Idland, Ane-Victoria; Hassel, Bjørnar; Henjum, Kristi; Knapskog, Anne Brita; Frihagen, Frede; Ræder, Johan; Godø, Aasmund; Ueland, Per Magne; McCann, Adrian; Figved, Paul Wender; Selbæk, Geir; Zetterberg, Henrik; Fei Fang, Evandro; Myrstad, Marius; Giil, Lasse Melvær (Journal article; Peer reviewed, 2022)
      Background: The kynurenine pathway (KP) has been identified as a potential mediator linking acute illness to cognitive dysfunction by generating neuroactive metabolites in response to inflammation. Delirium (acute confusion) ...
    • Cobalamin and folate status in women during early pregnancy in Bhaktapur, Nepal 

      Schwinger, Catherine; Sharma, Shakun; Chandyo, Ram K; Hysing, Mari; Kvestad, Ingrid; Ulak, Manjeswori; Ranjitkar, Suman; Shrestha, Merina; Shrestha, Laxman; McCann, Adrian; Ueland, Per Magne; Strand, Tor Arne (Journal article; Peer reviewed, 2021)
      The demand for cobalamin (vitamin B12) and folate is increased during pregnancy, and deficiency during pregnancy may lead to complications and adverse outcomes. Yet, the status of these micronutrients is unknown in many ...
    • Dietary Intake and Biomarkers of Folate and Cobalamin Status in Norwegian Preschool Children: The FINS-KIDS Study 

      Solvik, Beate Stokke; Strand, Tor A; Kvestad, Ingrid; Markhus, Maria Wik; Ueland, Per Magne; McCann, Adrian; Øyen, Jannike (Journal article; Peer reviewed, 2020)
      Background: Folate and cobalamin (vitamin B-12) are essential for growth and development. However, few populationbased studies have investigated B-vitamin status in children. Objectives: This study aimed to assess biomarkers ...
    • Effect of cod residual protein supplementation on markers of glucose regulation in lean adults: A randomized double-blind study 

      Vildmyren, Iselin; Halstensen, Alfred; McCann, Adrian; Midttun, Øivind; Ueland, Per Magne; Oterhals, Åge; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2020)
      Large quantities of protein-rich cod residuals, which are currently discarded, could be utilized for human consumption. Although fish fillet intake is related to beneficial health effects, little is known about the potential ...
    • Effects of vitamin B12 supplementation on neurodevelopment and growth in Nepalese Infants: A randomized controlled trial 

      Strand, Tor A; Ulak Chandyo, Manjeswori; Hysing, Mari; Ranjitkar, Suman; Kvestad, Ingrid; Shrestha, Merina; Ueland, Per Magne; McCann, Adrian; Shrestha, Prakash S; Shrestha, Laxman P.; Chandyo, Ram K. (Journal article; Peer reviewed, 2020)
      Background Vitamin B12 deficiency is common and affects cell division and differentiation, erythropoiesis, and the central nervous system. Several observational studies have demonstrated associations between biomarkers ...
    • Exploratory analyses on the effect of time since last meal on concentrations of amino acids, lipids, one-carbon metabolites, and vitamins in the Hordaland Health Study 

      Anfinsen, Åslaug Matre; Rosendahl-Riise, Hanne; Nygård, Ottar Kjell; Tell, Grethe S.; Ueland, Per Magne; Ulvik, Arve; McCann, Adrian; Dierkes, Jutta; Lysne, Vegard (Journal article; Peer reviewed, 2023)
      Purpose Dietary intake may have pronounced effects on circulating biomarker concentrations. Therefore, the aim was to provide a descriptive overview of serum metabolite concentrations in relation to time since last meal, ...
    • Impaired Adipocyte SLC7A10 Promotes Lipid Storage in Association With Insulin Resistance and Altered BCAA Metabolism 

      Jersin, Regine Åsen; Tallapragada, Divya Sri; Skartveit, Linn; Bjune, Mona Synnøve; Muniandy, Maheswary; Lee-Ødegård, Sindre; Heinonen, Sini; Alvarez, Marcus; Birkeland, Kåre Inge; Drevon, Christian André; Pajukanta, Päivi; McCann, Adrian; Pietiläinen, Kirsi H.; Claussnitzer, Melina; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2023)
      Context The neutral amino acid transporter SLC7A10/ASC-1 is an adipocyte-expressed gene with reduced expression in insulin resistance and obesity. Inhibition of SLC7A10 in adipocytes was shown to increase lipid accumulation ...
    • Impaired glucose utilization in the brain of patients with delirium following hip fracture 

      Titlestad, Irit; Watne, Leiv; Caplan, Gideon A.; McCann, Adrian; Ueland, Per Magne; Neerland, Bjørn Erik; Myrstad, Marius; Halaas, Nathalie Bodd; Pollmann, Christian Thomas; Henjum, Kristi; Ranhoff, Anette Hylen; Solberg, Lene Bergendal; Figved, Wender; Cunningham, Colm; Melvær, Giil Lasse (Journal article; Peer reviewed, 2024)
      Alterations in brain energy metabolism have long been proposed as one of several neurobiological processes contributing to delirium. This is supported by previous findings of altered CSF lactate and neuron-specific enolase ...
    • Kynurenine Pathway Metabolites in the Blood and Cerebrospinal Fluid Are Associated with Human Aging 

      Solvang, Stein-Erik Hafstad; Hodge, Allison; Watne, Leiv; Cabral-Marques, Otavio; Nordrehaug, Jan Erik; Giles, Graham G.; Dugué, Pierre-Antoine; Nygård, Ottar Kjell; Ueland, Per Magne; McCann, Adrian; Idland, Ane-Victoria; Midttun, Øivind; Ulvik, Arve; Halaas, Nathalie Bodd; Tell, Grethe S.; Melvær, Giil Lasse (Journal article; Peer reviewed, 2022)
      The kynurenine pathway is implicated in aging, longevity, and immune regulation, but longitudinal studies and assessment of the cerebrospinal fluid (CSF) are lacking. We investigated tryptophan (Trp) and downstream kynurenine ...
    • Kynurenines, Neuropsychiatric Symptoms, and Cognitive Prognosis in Patients with Mild Dementia 

      Solvang, Stein-Erik Hafstad; Nordrehaug, Jan Erik; Aarsland, Dag; Lange, Johannes; Ueland, Per Magne; McCann, Adrian; Midttun, Øivind; Tell, Grethe S.; Melvær, Giil Lasse (Journal article; Peer reviewed, 2019)
      Introduction: Circulating tryptophan (Trp) and its downstream metabolites, the kynurenines, are potentially neuroactive. Consequently, they could be associated with neuropsychiatric symptoms and cognitive prognosis in ...
    • Metabolic role of the hepatic valine/3-hydroxyisobutyrate (3-HIB) pathway in fatty liver disease 

      Bjune, Mona Synnøve; Dyer, Laurence; Laupsa-Borge, Johnny; Sommersten, Cathrine Horn; McCann, Adrian; Glastad, Robert Clay; Johnston, Iain; Kern, Matthias; Blüher, Matthias; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2023)
      Background: The valine (branched-chain amino acid) metabolite 3-hydroxyisobutyrate (3-HIB), produced by 3-Hydroxyisobutyryl-CoA Hydrolase (HIBCH), is associated with insulin resistance and type 2 diabetes, but implicated ...
    • Microheterogeneity and preanalytical stability of protein biomarkers of inflammation and renal function 

      Gao, Jie; Ulvik, Arve; McCann, Adrian; Ueland, Per Magne; Meyer, Klaus (Journal article; Peer reviewed, 2021)
      Protein biomarker microheterogeneity has attracted increasing attention in epidemiological and clinical research studies. Knowledge concerning the preanalytical stability of proteins is paramount to assess the biological ...
    • The Pah-R261Q mouse reveals oxidative stress associated with amyloid-like hepatic aggregation of mutant phenylalanine hydroxylase 

      Aubi Catevilla, Oscar; Prestegård, Karina Skjervheim; K C, Kunwar Jung; Shi, Tie-Jun; Ying, Ming; Grindheim, Ann Kari; Scherer, Tanja; Ulvik, Arve; McCann, Adrian; Spriet, Endy; Thöny, Beat; Martinez, Aurora (Journal article; Peer reviewed, 2021)
      Phenylketonuria (PKU) is caused by autosomal recessive variants in phenylalanine hydroxylase (PAH), leading to systemic accumulation of L-phenylalanine (L-Phe) that may reach neurotoxic levels. A homozygous Pah-R261Q mouse, ...
    • Pre-diagnostic circulating concentrations of fat-soluble vitamins and risk of glioma in three cohort studies 

      Yue, Yiyang; Creed, Jordan H.; Cote, David J.; Stampfer, Meir J.; Wang, Molin; Midttun, Øivind; McCann, Adrian; Ueland, Per Magne; Furtado, Jeremy; Egan, Kathleen; Smith-Warner, Stephanie A. (Journal article; Peer reviewed, 2021)
      Few prospective studies have evaluated the relation between fat-soluble vitamins and glioma risk. Using three cohorts—UK Biobank (UKB), Nurses’ Health Study (NHS), and Health Professionals Follow-Up Study (HPFS), we ...
    • Relationship between Ketones, Ghrelin, and, Appetite on Isocaloric Diets with Varying Carbohydrate Quality and Amount: Results from a Randomized Controlled Trial in People with Obesity (CARBFUNC) 

      Horn, Cathrine; Gjerde, Eirin Semb; Laupsa-Borge, Johnny; Andersen, Amanda Iselin Olesen; Lawrence-Archer, Laurence; McCann, Adrian; Hansson, Patrik; Raza, Ghulam S.; Herzig, Karl Heinz; Lied, Gülen Arslan; Alho Letra Martins, Catia Patricia; Mellgren, Gunnar; Dierkes, Jutta; Dankel, Simon N (Journal article; Peer reviewed, 2023)
      Background Low-carbohydrate high-fat (LCHF) diets may suppress the increase in appetite otherwise seen after diet-induced fat loss. However, studies of diets without severe energy restriction are lacking, and the effects ...
    • Role of the Neutral Amino Acid Transporter SLC7A10 in Adipocyte Lipid Storage, Obesity and Insulin Resistance 

      Jersin, Regine Åsen; Tallapragada, Divya Sri Priyanka; Madsen, André; Skartveit, Linn; Fjære, Even; McCann, Adrian; Dyer, Laurence; Willems, Aron; Bjune, Jan-Inge; Bjune, Mona Synnøve; Våge, Villy; Nielsen, Hans Jørgen; Thorsen, Håvard Luong; Nedrebø, Bjørn Gunnar; Busch, Christian; Steen, Vidar M.; Blüher, Matthias; Jacobson, Peter; Svensson, Per-Arne; Fernø, Johan; Rydén, Mikael; Arner, Peter; Nygård, Ottar; Claussnitzer, Melina; Ellingsen, Ståle; Madsen, Lise; Sagen, Jørn V.; Mellgren, Gunnar; Dankel, Simon N (Journal article; Peer reviewed, 2021)
      Elucidation of mechanisms that govern lipid storage, oxidative stress, and insulin resistance may lead to improved therapeutic options for type 2 diabetes and other obesity-related diseases. Here, we find that adipose ...
    • Serum concentrations of amino acids and tryptophan metabolites are affected by consumption of a light breakfast: a clinical intervention study in adults with overweight or obesity 

      Hagen, Ingrid Valheim; Helland, Anita; Bratlie, Marianne; Midttun, Bjørn Øivind; McCann, Adrian; Ulvik, Arve; Mellgren, Gunnar; Ueland, Per Magne; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2023)
      Background Epidemiological studies often investigate amino acids and their metabolites as biomarkers, but do not always consistently use fasting or non-fasting blood samples, or may lack information on the prandial ...