William G Christen1, Nancy R Cook1,2, Stephanie E Chiuve1,3, Paul M Ridker1,4,5,2, J Michael Gaziano1,6. 1. a The Division of Preventive Medicine , Department of Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston , MA, USA. 2. e Department of Epidemiology , Harvard School of Public Health , Boston , MA, USA. 3. f Department of Nutrition , Harvard School of Public Health , Boston , MA, USA. 4. c The Center for Cardiovascular Disease Prevention , Brigham and Women's Hospital, Harvard Medical School , Boston , MA, USA. 5. d The Donald W. Reynolds Center for Cardiovascular Research , Brigham and Women's Hospital, Harvard Medical School , Boston , MA, USA. 6. b The Division of Aging , Department of Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston , MA, USA.
Abstract
PURPOSE: Cross-sectional and case-control studies generally support a direct association between elevated plasma homocysteine and age-related macular degeneration (AMD), but data from prospective studies are limited. We examined the prospective relation of plasma homocysteine level, its dietary determinants, and risk of AMD in a large cohort of apparently healthy male physicians. METHODS: During a mean follow-up of 11.2 years, we identified 146 incident cases of visually significant AMD (responsible for a reduction of visual acuity to 20/30 or worse), and 146 controls matched for age, smoking status, and time of blood draw. We measured concentration of homocysteine in blood samples collected at baseline using an enzymatic assay. and we assessed dietary intake of B vitamins and related compounds betaine and choline with a food frequency questionnaire administered at baseline. RESULTS: AMD was not associated with plasma level of homocysteine; the multivariable-adjusted odds ratio (OR) of AMD comparing the highest and lowest quartile of homocysteine was 1.09 (95% confidence interval [95% CI]: 0.52-2.31; p for trend = 0.99). However, AMD was inversely associated with quartile of intake of total folate (OR: 0.55; 95% CI: 0.24-1.23; p for trend = 0.08), vitamin B6 from food (OR: 0.39; 95% CI: 0.17-0.88; p for trend = 0.01), and betaine (OR: 0.53; 95% CI: 0.22-1.27; p for trend = 0.048). CONCLUSIONS: These prospective data from a cohort of apparently healthy men do not support a major role for homocysteine in AMD occurrence, but do suggest a possible beneficial role for higher intake of several nutrients involved in homocysteine metabolism.
RCT Entities:
PURPOSE: Cross-sectional and case-control studies generally support a direct association between elevated plasma homocysteine and age-related macular degeneration (AMD), but data from prospective studies are limited. We examined the prospective relation of plasma homocysteine level, its dietary determinants, and risk of AMD in a large cohort of apparently healthy male physicians. METHODS: During a mean follow-up of 11.2 years, we identified 146 incident cases of visually significant AMD (responsible for a reduction of visual acuity to 20/30 or worse), and 146 controls matched for age, smoking status, and time of blood draw. We measured concentration of homocysteine in blood samples collected at baseline using an enzymatic assay. and we assessed dietary intake of B vitamins and related compounds betaine and choline with a food frequency questionnaire administered at baseline. RESULTS:AMD was not associated with plasma level of homocysteine; the multivariable-adjusted odds ratio (OR) of AMD comparing the highest and lowest quartile of homocysteine was 1.09 (95% confidence interval [95% CI]: 0.52-2.31; p for trend = 0.99). However, AMD was inversely associated with quartile of intake of total folate (OR: 0.55; 95% CI: 0.24-1.23; p for trend = 0.08), vitamin B6 from food (OR: 0.39; 95% CI: 0.17-0.88; p for trend = 0.01), and betaine (OR: 0.53; 95% CI: 0.22-1.27; p for trend = 0.048). CONCLUSIONS: These prospective data from a cohort of apparently healthy men do not support a major role for homocysteine in AMD occurrence, but do suggest a possible beneficial role for higher intake of several nutrients involved in homocysteine metabolism.
Authors: William G Christen; Robert J Glynn; Howard D Sesso; Tobias Kurth; Jean MacFadyen; Vadim Bubes; Julie E Buring; JoAnn E Manson; J Michael Gaziano Journal: Arch Ophthalmol Date: 2010-11
Authors: Howard D Sesso; Julie E Buring; William G Christen; Tobias Kurth; Charlene Belanger; Jean MacFadyen; Vadim Bubes; JoAnn E Manson; Robert J Glynn; J Michael Gaziano Journal: JAMA Date: 2008-11-09 Impact factor: 56.272
Authors: W C Willett; L Sampson; M J Stampfer; B Rosner; C Bain; J Witschi; C H Hennekens; F E Speizer Journal: Am J Epidemiol Date: 1985-07 Impact factor: 4.897
Authors: William G Christen; Daniel I Chasman; Nancy R Cook; Stephanie E Chiuve; Paul M Ridker; Julie E Buring Journal: Ophthalmol Retina Date: 2018-05