• 450K epigenome-wide scan identifies differential DNA methylation in newborns related to maternal smoking during pregnancy 

      Joubert, Bonnie R.; Håberg, Siri Eldevik; Nilsen, Roy Miodini; Wang, Xuting; Vollset, Stein Emil; Murphy, Susan K; Huang, Zhiqing; Hoyo, Cathrine; Midttun, Øivind; Cupul-Uicab, Lea A; Ueland, Per Magne; Wu, Michael C; Nystad, Wenche; Bell, Douglas A; Peddada, Shyamal D; London, Stephanie J (Peer reviewed; Journal article, 2012-10)
      Background: Epigenetic modifications, such as DNA methylation, due to in utero exposures may play a critical role in early programming for childhood and adult illness. Maternal smoking is a major risk factor for multiple ...
    • 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. ...
    • Associations of neopterin and kynurenine–tryptophan ratio with survival in primary sclerosing cholangitis 

      Dhillon, Amandeep Kaur; Rupp, Christian; Bergquist, Annika; Voitl, Robert; Folseraas, Trine; Trøseid, Marius; Midttun, Øivind; Ueland, Per Magne; Karlsen, Tom Hemming; Vesterhus, Mette Nåmdal; Kummen, Martin; Hov, Johannes Espolin Roksund (Journal article; Peer reviewed, 2021)
      Background and aims Biomarkers of inflammation may be of clinical utility in primary sclerosing cholangitis (PSC). We aimed to investigate the interferon gamma-related biomarkers neopterin and kynurenine–tryptophanratio ...
    • Cellular immune activity biomarker neopterin is associated hyperlipidemia: results from a large population-based study 

      Chuang, Shu-Chun; Boeing, Heiner; Vollset, Stein Emil; Midttun, Øivind; Ueland, Per Magne; Bueno-de-Mesquita, Bas; Lajous, Martin; Fagherazzi, Guy; Boutron-Ruault, Marie-Christine; Kaaks, Rudolf; Küehn, Tilman; Pischon, Tobias; Drogan, Dagmar; Tjønneland, Anne; Overvad, Kim; Quirós, J. Ramón; Agudo, Antonio; Molina-Montes, Esther; Dorronsoro, Miren; Huerta, José María; Barricarte, Aurelio; Khaw, Kay-Tee; Wareham, Nicholas J.; Travis, Ruth C.; Trichopoulou, Antonia; Lagiou, Pagona; Trichopoulos, Dimitrios; Masala, Giovanna; Agnoli, Claudia; Tumino, Rosario; Mattiello, Amalia; Peeters, Petra H.; Weiderpass, Elisabete; Palmqvist, Richard; Ljuslinder, Ingrid; Gunter, Marc; Lu, Yunxia; Cross, Amanda J.; Riboli, Elio; Vineis, Paolo; Aleksandrova, Krasimira (Peer reviewed; Journal article, 2016-02-25)
      Background: Increased serum neopterin had been described in older age two decades ago. Neopterin is a biomarker of systemic adaptive immune activation that could be potentially implicated in metabolic syndrome (MetS). ...
    • Circulating biomarkers of one-carbon metabolism in relation to renal cell carcinoma incidence and survival 

      Johansson, Mattias; Anouar, Fanidi; Muller, David C.; Bassett, Julie K.; Midttun, Øivind; Vollset, Stein Emil; Travis, Ruth C.; Palli, Domenico; Mattiello, Amalia; Sieri, Sabina; Trichopoulou, Antonia; Lagiou, Pagona; Trichopoulos, Dimitrios; Ljungberg, Börje; Hallmans, Göran; Weiderpass, Elisabete; Skeie, Guri; Gonzalez, Carlos A.; Dorronsoro, Miren; Peeters, Petra H.; Bueno-de-Mesquita, H. B(as).; Ros, Martine M.; Ruault, Marie-Christine Boutron; Fagherazzi, Guy; Clavel, Françoise; Sanchez, Maria-Jose; Gurrea, Aurelio Barricarte; Navarro, Carmen; Quirós, J. Ramón; Overvad, Kim; Tjønneland, Anne; Aleksandrova, Krassimira; Vineis, Paolo; Gunter, Marc J.; Kaaks, Rudolf; Giles, Graham; Relton, Caroline; Riboli, Elio; Boeing, Heiner; Ueland, Per Magne; Severi, Gianluca; Brennan, Paul (Peer reviewed; Journal article, 2014)
      Background The etiology of renal cell carcinoma (RCC) is only partially understood, but a metabolic component appears likely. We investigated biomarkers of one-carbon metabolism and RCC onset and survival. Methods The ...
    • Circulating concentrations of biomarkers and metabolites related to Vitamin status, one-carbon and the kynurenine pathways in US, Nordic, Asian, and Australian populations 

      Midttun, Øivind; Theofylaktopoulou, Despoina; Mccann, Adrian; Fanidi, Anouar; Muller, David C.; Meyer, Klaus; Ulvik, Arve; Zheng, Wei; Shu, Xiao-Ou; Xiang, Yong-Bing; Prentice, Ross; Thomson, Cynthia A.; Pettinger, Mary; Giles, Graham G.; Hodge, Allison; Cai, Qiuyin; Blot, William J.; Wu, Jie; Johansson, Mikael; Hultdin, Johan; Grankvist, Kjell; Stevens, Victoria L.; McCullough, Marjorie L.; Weinstein, Stephanie J.; Albanes, Demetrius; Langhammer, Arnulf; Hveem, Kristian; Næss, Marit; Sesso, Howard D.; Gaziano, J. Michael; Buring, Julie E.; Lee, I-Min; Severi, Gianluca; Zhang, Xuehong; Han, Jiali; Stampfer, Meir J.; Smith-Warner, Stephanie A.; Zeleniuch-Jacquotte, Anne; Le Marchand, Loic; Yuan, Jian-Min; Butler, Lesley M.; Koh, Woon-Puay; Wang, Renwei; Gao, Yu-Tang; Ericson, Ulrika; Sonestedt, Emily; Ziegler, Regina G.; Freedman, Neal D.; Visvanathan, Kala; Jones, Miranda R.; Relton, Caroline; Brennan, Paul; Johansson, Mattias; Ueland, Per Magne (Peer reviewed; Journal article, 2017-06)
      Background: Circulating concentrations of biomarkers that are related to vitamin status vary by factors such as diet, fortification, and supplement use. Published biomarker concentrations have also been influenced by the ...
    • Circulating high sensitivity C reactive protein concentrations and risk of lung cancer : Nested case-control study within Lung Cancer Cohort Consortium 

      Muller, David C.; Larose, Tricia L; Hodge, Allison; Guida, Florence; Langhammer, Arnulf; Grankvist, Kjell; Meyer, Klaus; Cai, Qiuyin; Arslan, Alan A.; Zeleniuch-Jacquotte, Anne; Albanes, Demetrius; Giles, Graham G.; Sesso, Howard D.; Lee, I-Min; Gaziano, J. Michael; Yuan, Jian-Min; Hoffman Bolton, Judith; Buring, Julie E.; Visvanathan, Kala; Le Marchand, Loic; Purdue, Mark P.; Caporaso, Neil E.; Midttun, Øivind; Ueland, Per Magne; Prentice, Ross L.; Weinstein, Stephanie J.; Stevens, Victoria L.; Zheng, Wei; Blot, William J.; Shu, Xiao-Ou; Zhang, Xuehong; Xiang, Yong-Bing; Koh, Woon-Puay; Hveem, Kristian; Thomson, Cynthia A.; Pettinger, Mary; Engström, Gunnar; Brunnström, Hans; Milne, Roger L.; Stampfer, Meir J.; Han, Jiali; Johansson, Mikael; Brennan, Paul; Severi, Gianluca; Johansson, Mattias (Peer reviewed; Journal article, 2019-01-03)
      Objectives: Inflammation may play an important role in lung cancer pathogenesis. Previous studies have suggested an association between C-reactive protein (CRP) as a marker of inflammation, and risk of lung cancer, but ...
    • Circulating Vitamin D in relation to cancer incidence and survival of the head and neck and oesophagus in the EPIC cohort 

      Fanidi, Anouar; Muller, David C.; Midttun, Øivind; Ueland, Per Magne; Vollset, Stein Emil; Relton, Caroline; Vineis, Paolo; Weiderpass, Elisabete; Skeie, Guri; Brustad, Magritt; Palli, Domenico; Tumino, Rosario; Grioni, Sara; Sacerdote, Carlotta; Bueno-de-Mesquita, H. Bas; Peeters, Petra H.; Boutron-Ruault, Marie-Christine; Kvaskoff, Marina; Cadeau, Claire; Huerta, José María; Sánchez, María-José; Agudo, Antonio; Lasheras, Cristina; Quirós, J. Ramón; Chamosa, Saioa; Riboli, Elio; Travis, Ruth C; Ward, Heather; Murphy, Neil; Khaw, Kay-Tee; Trichopoulou, Antonia; Lagiou, Pagona; Papatesta, Eleni-Maria; Boeing, Heiner; Kühn, Tilman; Katzke, Verena; Steffen, Annika; Johansson, Anders; Brennan, Paul; Johansson, Mattias (Peer reviewed; Journal article, 2016-11-04)
      Experimental and epidemiological data suggest that vitamin D play a role in pathogenesis and progression of cancer, but prospective data on head and neck cancer (HNC) and oesophagus cancer are limited. The European Prospective ...
    • Cosinor modelling of seasonal variation in 25-hydroxyvitamin D concentrations in cardiovascular patients in Norway 

      Degerud, Eirik Magnus Meek; Hoff, Rune; Nygård, Ottar; Strand, Elin; Nilsen, Dennis W. T.; Nordrehaug, Jan Erik; Midttun, Øivind; Ueland, Per Magne; De Vogel, Stefan; Dierkes, Jutta (Peer reviewed; Journal article, 2016)
      Background/Objectives: Seasonal variation may reduce the validity of 25-hydroxyvitamin D (25OHD) as a biomarker of vitamin D status. Here we aimed to identify potential determinants of seasonal variation in 25OHD concentrations ...
    • Creatinine, total cysteine and uric acid are associated with serum retinol in patients with cardiovascular disease 

      Olsen, Thomas; Vinknes, Kathrine; Blomhoff, Rune; Lysne, Vegard; Midttun, Øivind; Dhar, Indu; Ueland, Per Magne; Svingen, Gard Frodahl Tveitevåg; Pedersen, Eva Ringdal; Drevon, Christian A; Refsum, Helga; Nygård, Ottar (Peer reviewed; Journal article, 2019-09-09)
      Purpose: We hypothesized that biomarkers and dietary factors related to cardiovascular disease risk were associated with serum retinol and evaluated these potential associations in patients with suspected coronary artery ...
    • DNA Methylation Score as a Biomarker in Newborns for Sustained Maternal Smoking during Pregnancy 

      Reese, Sarah E; Zhao, Shanshan; Wu, Michael C; Joubert, Bonnie R; Parr, Christine Louise; Håberg, Siri Eldevik; Ueland, Per Magne; Nilsen, Roy Miodini; Midttun, Øivind; Vollset, Stein Emil; Peddada, Shyamal D; Nystad, Wenche; London, Stephanie J (Peer reviewed; Journal article, 2017-04)
      Background: Maternal smoking during pregnancy, especially when sustained, leads to numerous adverse health outcomes in offspring. Pregnant women disproportionately underreport smoking and smokers tend to have lower follow-up ...
    • Efect of high intake of cod or salmon on serum total neopterin concentration: a randomised clinical trial 

      Helland, Anita; Bratlie, Marianne; Hagen, Ingrid V.; Midttun, Øivind; Sveier, Harald; Mellgren, Gunnar; Ueland, Per Magne; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2021)
      Purpose Primarily, to investigate the effect of high intake of cod (lean fish) or salmon (fatty fish) on serum concentration of total neopterin, a marker of cellular immune activation that is associated with cardiovascular ...
    • 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 ...
    • The effect of electroconvulsive therapy (ECT) on serum tryptophan metabolites 

      Aarsland, Tore Ivar Malmei; Leskauskaite, Ieva; Midttun, Øivind; Ulvik, Arve; Ueland, Per Magne; Oltedal, Leif; Erchinger, Vera Jane; Ødegaard, Ketil Joachim; Haavik, Jan; Kessler, Ute (Peer reviewed; Journal article, 2019-05-31)
      Background: Prior studies suggest that activation of the tryptophan catabolism via the kynurenine pathway by proinflammatory cytokines may be involved in the pathophysiology of depression. Electroconvulsive therapy (ECT) ...
    • Effects of high intake of cod or salmon on gut microbiota profile, faecal output and serum concentrations of lipids and bile acids in overweight adults: a randomised clinical trial 

      Bratlie, Marianne; Hagen, Ingrid Valheim; Helland, Anita; Erchinger, Friedemann Georg; Midttun, Øivind; Ueland, Per Magne; Rosenlund, Grethe; Sveier, Harald; Mellgren, Gunnar; Hausken, Trygve; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2020-10-27)
      Purpose To explore whether high intake of cod or salmon would affect gut microbiota profile, faecal output and serum concentrations of lipids and bile acids. Methods Seventy-six adults with overweight/obesity with no ...
    • Five salmon dinners per week were not sufficient to prevent the reduction in serum vitamin D in autumn at 60° north latitude: A randomised trial 

      Bratlie, Marianne; Hagen, Ingrid Valheim; Helland, Anita; Midttun, Øivind; Ulvik, Arve; Rosenlund, Grethe; Sveier, Harald; Mellgren, Gunnar; Ueland, Per Magne; Gudbrandsen, Oddrun Anita (Journal article; Peer reviewed, 2020)
      Low serum concentrations of several vitamins have been linked to increased risk of diseases including insulin resistance and type 2 diabetes (T2D). Fish is a good source of several vitamins, and the prevalence of T2D is ...
    • High neopterin and IP-10 levels in cerebrospinal fluid are associated with neurotoxic tryptophan metabolites in acute central nervous system infections 

      Quist-Paulsen, Else; Aukrust, Pål; Kran, Anne-Marte Bakken; Dunlop, Oona Borghild; Ormaasen, Vidar; Stiksrud, Birgitte; Midttun, Øivind; Ueland, Thor; Ueland, Per Magne; Mollnes, Tom Eirik; Dyrhol-Riise, Anne Ma (Peer reviewed; Journal article, 2018-11-23)
      Background The host response to intruders in the central nervous system (CNS) may be beneficial but could also be harmful and responsible for neurologic symptoms and sequelae in CNS infections. This immune response induces ...
    • Impact of Pre-Pregnancy BMI on B Vitamin and Inflammatory Status in Early Pregnancy: An Observational Cohort Study 

      Monsen, Anne Lise Bjørke; Ulvik, Arve; Nilsen, Roy Miodini; Midttun, Øivind; Roth, Christine; Magnus, Per; Stoltenberg, Camilla; Vollset, Stein Emil; Reichborn-Kjennerud, Ted; Ueland, Per Magne (Peer reviewed; Journal article, 2016-11-30)
      Maternal nutrition and inflammation have been suggested as mediators in the development of various adverse pregnancy outcomes associated with maternal obesity. We have investigated the relation between pre-pregnancy BMI, ...
    • Inflammatory markers, the tryptophan-kynurenine pathway, and Vitamin B status after bariatric surgery 

      Christensen, Monika; Fadnes, Dag Jone Stokke; Røst, Therese Halvorsen; Pedersen, Eva Ringdal; Andersen, John Roger; Våge, Villy; Ulvik, Arve; Midttun, Øivind; Ueland, Per Magne; Nygård, Ottar; Mellgren, Gunnar (Peer reviewed; Journal article, 2018-02-05)
      Objective: Obesity is associated with increased inflammation and insulin resistance. In conditions with chronic immune activation, low plasma vitamin B6-levels are described, as well as an increased kynurenine:tryptophan-ratio ...
    • Interferon gamma (IFN-γ)-mediated inflammation and the kynurenine pathway in relation to risk of hip fractures: The Hordaland Health Study 

      Apalset, Ellen M.; Gjesdal, Clara Gram; Ueland, Per Magne; Øyen, Jannike; Meyer, Klaus; Midttun, Øivind; Eide, Geir Egil; Tell, Grethe Seppola (Peer reviewed; Journal article, 2014-05-10)
      Summary The cytokine interferon gamma (IFN-γ) stimulates neopterin release and tryptophan degradation into kynurenines through the kynurenine pathway. High levels of neopterin were associated with increased hip fracture ...