Interactions between metallopeptidase 3 polymorphism rs679620 and BMI in predicting blood pressure in African-American women with hypertension.

Abstract:

:BMI represents an internal metabolic and physiological environment that plays a key role in development of high blood pressure (BP) for many Americans. African-American women have a higher prevalence of high BP and being overweight than men or other ethnic groups. This study examines the genetic-environmental interaction effects of single nucleotide polymorphisms and BMI on BP among African-American women using 1418 African-American women and men from the Genetic Epidemiology Network of Arteriopathy study. A total of 403 tests of single nucleotide polymorphism-BMI interaction were conducted using methods of internal replication, cross-validation, and false discovery rate. One single nucleotide polymorphism (located in the ATP6B1 gene, rs2266917) passed adjustments for multiple testing and had a significant independent main effect (P = 0.0018) on diastolic BP among African-American women. A significant sex-specific interaction effect was found between MMP3_rs679620 and BMI in African-American women (P = 0.0009). MMP3_rs679620 (A-G polymorphism) encodes a Lys-Glu nonsynonymous variant at the 45th amino acid of metallopeptidase 3 and indicates a putative functional modification of metallopeptidase 3. These findings were not identified in African-American men. MMP3_rs679620 appears to have a protective effect on diastolic BP in women with high BMI. Surprisingly, MMP3_rs679620 had the opposite effect on women with low BMI, resulting in higher diastolic BP.

journal_name

J Hypertens

journal_title

Journal of hypertension

authors

Taylor J,Sun YV,Chu J,Mosley TH,Kardia SL

doi

10.1097/HJH.0b013e3283110402

subject

Has Abstract

pub_date

2008-12-01 00:00:00

pages

2312-8

issue

12

eissn

0263-6352

issn

1473-5598

pii

00004872-200812000-00011

journal_volume

26

pub_type

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