Population-based sample reveals gene-gender interactions in blood pressure in White Americans.

TitlePopulation-based sample reveals gene-gender interactions in blood pressure in White Americans.
Publication TypeJournal Article
Year of Publication2007
AuthorsRana BK, Insel PA, Payne SH, Abel K, Beutler E, Ziegler MG, Schork NJ, O'Connor DT
Date Published2007 Jan
KeywordsAdult, Aged, Alleles, Angiotensinogen, Antihypertensive Agents, Blood Pressure, Diastole, Epistasis, Genetic, European Continental Ancestry Group, Female, Genes, X-Linked, Genotype, Haplotypes, Humans, Hypertension, Male, Middle Aged, Polymorphism, Single Nucleotide, Receptors, Adrenergic, Sex Factors, United States

The influence of genetic contributors, such as common single nucleotide polymorphisms, on blood pressure and essential hypertension may vary with the gender. We used the power of a large, community-based sample to probe whether gender interacts with genes in contributing to extremes of blood pressure in 611 male and 656 female age-matched white Americans within the top and bottom 5th percentiles of blood pressure among >53 000 people in a health maintenance program. This approach has >90% statistical power to detect genes contributing as little as 3% to trait (blood pressure) variation. We scored approximately 60 000 genotypes in the subjects: 48 single nucleotide polymorphisms at 33 autosomal and 2 X-linked genes in adrenergic and renal pathways that regulate blood pressure. Six individual variants significantly affected blood pressure and demonstrated gene-by-gender interaction, yielding different effects of the single nucleotide polymorphism on blood pressure in males and females. In females, polymorphisms at beta(1)-adrenergic receptor and alpha(2A)-adrenergic receptor contributed to blood pressure, whereas in men, polymorphisms at beta(2)-adrenergic receptor and angiotensinogen were associated. An alpha(2A)-adrenergic receptor haplotype influenced blood pressure in women, whereas 2 angiotensinogen haplotypes were associated in men. We also detected gene-by-gene, gender-specific interactions (epistasis) in pathophysiological pathways. This study reveals gender-specific effects of single nucleotide polymorphisms, haplotypes, and gene-by-gene interactions that determine blood pressure in white Americans. Such genetic variants may define genetically and etiologically distinct subgroups of men and women with essential hypertension and may have implications for rational treatment selection.

PubMed URLhttp://www.ncbi.nlm.nih.gov/pubmed/17159089?dopt=Abstract
Alternate TitleHypertension
PubMed ID17159089