Abstract

A preliminary perusal of ACE I/D polymorphism with adiposity traits and blood pressure among the AO NAGAS: Does gender-dependent gene expression matter?

Author(s):Imkongtenla Pongen, Meenal Dhall and Satwanti Kapoor

This study aims to evaluate the association of gender-dependent expression of angiotensin converting enzyme gene polymorphism (I/D) with adiposity markers and blood pressure among AoNagas.57AoNagas[Males (n) =26; Females (n) = 31; Mean Age: 30.56±7.5 and 31.9 ±8.31]residing in Delhi were included in this cross sectionalstudy. Anthropometric measurements and blood pressure were taken using standardized techniques. Adiposity indices viz., BMI, WHR and WHtR were computed. Body fat percentage was assessed by bioelectricimpedance technique using Tanita Body composition analyzer (T-6360). Venous blood samples were withdrawn for DNA extraction and genotyping of ACE gene (I/D) polymorphism was established by polymerase chain reaction (PCR). In female participants with DD homozygote, risk of both general and central obesity as depicted by BMI, body fat percentage, WC, WHR and WHtR were higher than ID heterozygote. Risk of hypertension was found to be greater among males with DD homozygote rather than females with DD homozygote. In males, obesity was not found to be associated with hypertension in either DD or ID genotypic variants of ACE. Whereas, in females obesity was significantly and positively correlated with hypertension in both DD and ID genotype. DD homozygous form of ACE is linked with both obesity and blood pressure in females and only with blood pressure in males. This genotype-by-gender interaction gives us a facet in understanding the complex genetic basis of adiposity and blood pressure phenotypes.

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