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Association of the Catechol-O-Methyl Transferase Gene Val158Met Polymorphism With Blood Pressure and Prevalence of Hypertension: Interaction With Dietary Energy Intake.
MedLine Citation:
PMID:  21776034     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BackgroundPrevious studies of a functional variant of the catechol-O-methyl transferase (COMT) gene, Val158Met, have provided inconsistent results with regard to blood pressure or hypertension. We examined the effect of this variant, the considering environmental factors of daily salt and energy intakes.MethodsA total of 735 Japanese men (mean age, 47 years) were recruited from two separate occupational cohorts from Kanagawa and Kyoto prefectures. Participants were genotyped for the presence of COMT Val158Met (rs4680, G/A). Daily salt and energy intakes were evaluated by the food frequency questionnaire (FFQ).ResultsMet/Met carriers had higher adjusted systolic blood pressure (SBP) (+4.79 mm Hg, P < 0.001) and diastolic blood pressure (DBP) (+2.33 mm Hg, P = 0.001) than Met/Val or Val/Val carriers. There was a significant association between being a Met/Met carrier and having a higher prevalence of hypertension (odds ratio = 2.448, 95% confidence interval = 1.426-4.205, P = 0.001). When salt and energy intakes were dichotomized, the effect of Val158Met on hypertension was observed only in the high-energy intake group, and was equivalent between low- and high-salt groups.ConclusionThe Met allele of COMT Val158Met is associated with higher blood pressure and higher prevalence of hypertension in Japanese men, and energy intake may interact with this effect.American Journal of Hypertension (2011). doi:10.1038/ajh.2011.93.
Authors:
Nay Chi Htun; Koichi Miyaki; Yixuan Song; Shinobu Ikeda; Takuro Shimbo; Masaaki Muramatsu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-21
Journal Detail:
Title:  American journal of hypertension     Volume:  -     ISSN:  1941-7225     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8803676     Medline TA:  Am J Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.
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