PURPOSE: Components of one-carbon metabolism are believed to influence cancer development with suggested mechanisms, including DNA methylation and DNA repair mechanisms. However, few prospective studies have investigated one-carbon metabolism in relation to prostate cancer risk, and the results have been conflicting. The aim of this study was to do a comprehensive investigation of the components of one-carbon metabolism in relation to prostate cancer risk. A panel of seven circulating B vitamins and related metabolites was selected, most of which have not been studied before. MATERIALS AND METHODS: We analyzed plasma concentrations of betaine, choline, cysteine, methionine, methylmalonic acid (MMA), vitamin B2, and vitamin B6 in 561 cases and 1,034 controls matched for age and recruitment date, nested within the population-based Northern Sweden Health and Disease Cohort. Relative risks of prostate cancer were estimated by conditional logistic regression. RESULTS: Positive associations with prostate cancer risk were observed for choline and vitamin B2, and an inverse association was observed for MMA. The relative risks for a doubling in concentrations were 1.46 [95% confidence interval (95% CI), 1.04-2.05; P(trend) = 0.03] for choline, 1.11 (95% CI, 1.00-1.23; P(trend) = 0.04) for vitamin B2, and 0.78 (95% CI, 0.63-0.97; P(trend) = 0.03) for MMA. Concentrations of betaine, cysteine, methionine, and vitamin B6 were not associated with prostate cancer risk. CONCLUSION: The results of this large prospective study suggest that elevated plasma concentrations of choline and vitamin B2 may be associated with an increased risk of prostate cancer. These novel findings support a role of one-carbon metabolism in prostate cancer etiology and warrant further investigation.
PURPOSE: Components of one-carbon metabolism are believed to influence cancer development with suggested mechanisms, including DNA methylation and DNA repair mechanisms. However, few prospective studies have investigated one-carbon metabolism in relation to prostate cancer risk, and the results have been conflicting. The aim of this study was to do a comprehensive investigation of the components of one-carbon metabolism in relation to prostate cancer risk. A panel of seven circulating B vitamins and related metabolites was selected, most of which have not been studied before. MATERIALS AND METHODS: We analyzed plasma concentrations of betaine, choline, cysteine, methionine, methylmalonic acid (MMA), vitamin B2, and vitamin B6 in 561 cases and 1,034 controls matched for age and recruitment date, nested within the population-based Northern Sweden Health and Disease Cohort. Relative risks of prostate cancer were estimated by conditional logistic regression. RESULTS: Positive associations with prostate cancer risk were observed for choline and vitamin B2, and an inverse association was observed for MMA. The relative risks for a doubling in concentrations were 1.46 [95% confidence interval (95% CI), 1.04-2.05; P(trend) = 0.03] for choline, 1.11 (95% CI, 1.00-1.23; P(trend) = 0.04) for vitamin B2, and 0.78 (95% CI, 0.63-0.97; P(trend) = 0.03) for MMA. Concentrations of betaine, cysteine, methionine, and vitamin B6 were not associated with prostate cancer risk. CONCLUSION: The results of this large prospective study suggest that elevated plasma concentrations of choline and vitamin B2 may be associated with an increased risk of prostate cancer. These novel findings support a role of one-carbon metabolism in prostate cancer etiology and warrant further investigation.
Authors: Simon M Collin; Chris Metcalfe; Helga Refsum; Sarah J Lewis; Luisa Zuccolo; George Davey Smith; Lina Chen; Ross Harris; Michael Davis; Gemma Marsden; Carole Johnston; J Athene Lane; Marta Ebbing; Kaare Harald Bønaa; Ottar Nygård; Per Magne Ueland; Maria V Grau; John A Baron; Jenny L Donovan; David E Neal; Freddie C Hamdy; A David Smith; Richard M Martin Journal: Cancer Epidemiol Biomarkers Prev Date: 2010-05-25 Impact factor: 4.254
Authors: Kana Wu; Donna Spiegelman; Tao Hou; Demetrius Albanes; Naomi E Allen; Sonja I Berndt; Piet A van den Brandt; Graham G Giles; Edward Giovannucci; R Alexandra Goldbohm; Gary G Goodman; Phyllis J Goodman; Niclas Håkansson; Manami Inoue; Timothy J Key; Laurence N Kolonel; Satu Männistö; Marjorie L McCullough; Marian L Neuhouser; Yikyung Park; Elizabeth A Platz; Jeannette M Schenk; Rashmi Sinha; Meir J Stampfer; Victoria L Stevens; Shoichiro Tsugane; Kala Visvanathan; Lynne R Wilkens; Alicja Wolk; Regina G Ziegler; Stephanie A Smith-Warner Journal: Int J Cancer Date: 2016-05-15 Impact factor: 7.396
Authors: Elizabeth L Cope; Martha J Shrubsole; Sarah S Cohen; Qiuyin Cai; Jie Wu; Per Magne Ueland; Øivind Midttun; Jennifer S Sonderman; William J Blot; Lisa B Signorello Journal: Cancer Epidemiol Biomarkers Prev Date: 2013-08-15 Impact factor: 4.254
Authors: Jung Eun Lee; Paul F Jacques; Lauren Dougherty; Jacob Selhub; Edward Giovannucci; Steven H Zeisel; Eunyoung Cho Journal: Am J Clin Nutr Date: 2010-03-10 Impact factor: 7.045