• 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 ...
    • Dietary methyl donors, methyl metabolizing enzymes, and epigenetic regulators: diet–gene interactions and promoter CpG island hypermethylation in colorectal cancer 

      De Vogel, Stefan; Wouters, Kim A. D.; Gottschalk, Ralph W. H.; Schooten, Frederik J.; Goeij, Anton F. P. M.; Bruïne, Adriaan P.; Goldbohm, R. Alexandra; den Brandt, Piet A.; Engeland, Manon; Weijenberg, Matty P. (Peer reviewed; Journal article, 2010-12-14)
      Dietary methyl donors might influence DNA methylation during carcinogenesis of colorectal cancer (CRC). Among 609 CRC cases and 1,663 subcohort members of the Netherlands Cohort Study on diet and cancer (n = 120,852), we ...
    • Plasma 25-hydroxyvitamin D and mortality in patients with suspected stable angina pectoris 

      Degerud, Eirik; Nygård, Ottar; De Vogel, Stefan; Hoff, Rune; Svingen, Gard Frodahl Tveitevåg; Pedersen, Eva Ringdal; Nilsen, Dennis W.T.; Nordrehaug, Jan Erik; Midttun, Øivind; Ueland, Per Magne; Dierkes, Jutta (Peer reviewed; Journal article, 2018-03)
      Context and Objective: Vitamin D status may affect cardiovascular disease (CVD) development and survival. We studied the relationship between concentrations of the circulating biomarker 25-hydroxyvitamin D (25OHD) and ...
    • Plasma methionine, choline, betaine, and dimethylglycine in relation to colorectal cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC) 

      Nitter, Mathilde Hjelle; Norgård, Benedicte Wentzel; De Vogel, Stefan; Eussen, Simone; Meyer, Klaus; Ulvik, Arve; Ueland, Per Magne; Nygård, Ottar; Vollset, Stein Emil; Bjørge, Tone; Tjønneland, Anne; Hansen, Louise; Boutron-Ruault, Marie-Christine; Racine, Antoine; Cottet, Vanessa; Kaaks, Rudolf; Kühn, Tilman; Trichopoulou, Antonia; Bamia, Christina; Naska, Androniki; Grioni, Sara; Palli, Domenico; Panico, Salvatore; Tumino, Rosario; Vineis, Paolo; Bueno-de-Mesquita, H. Bas; Van Kranen, Henk J.; Peeters, Petra H. M.; Weiderpass, Elisabete; Dorronsoro, Miren; Jakszyn, Paula; Sánchez, María-José; Argüelles, Marcial Vicente; Huerta, José-Maria; Barricarte, Aurelio; Johansson, Matthias; Ljuslinder, Ingrid; Khaw, Kay Tee; Wareham, Nicholas J.; Freisling, Heinz; Duarte-Salles, Talita; Stepien, Magdalena; Gunter, Mark J.; Riboli, Élio B. (Peer reviewed; Journal article, 2014-08)
      Background Disturbances in one carbon metabolism may contribute to carcinogenesis by affecting methylation and synthesis of DNA. Choline and its oxidation product betaine are involved in this metabolism and can serve as ...