Open AccessThe M235T polymorphism of the angiotensinogen gene in South Indian patients of hypertrophic cardiomyopathy
Author(s) -
Polugari Prem Kumar Manohar Rao,
Anjana Munshi,
Ratnam Mullapudi,
P. Sampath Kumar,
Sharath Anugula,
Gundala Anil Krishna,
Murlidhar Sadhnani
Publication year - 2010
Publication title -
jraas. journal of the renin-angiotensin-aldosterone system/journal of the renin-angiotensin-aldosterone system
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.457
H-Index - 46
eISSN - 1752-8976
pISSN - 1470-3203
DOI - 10.1177/1470320310387955
Subject(s) - hypertrophic cardiomyopathy , missense mutation , exon , genotype , allele , cardiomyopathy , left ventricular hypertrophy , genetics , allele frequency , medicine , population , biology , gene , mutation , heart failure , blood pressure , environmental health
. Hypertrophic cardiomyopathy (HCM) is a complex disorder and genetically transmitted cardiac disease with a diverse clinical course. The objective of the present study was to examine the association of the T704C polymorphism of exon 2 of the angiotensinogen (AGT) gene with HCM in a South Indian population from Andhra Pradesh. Subjects and methods. One-hundred and fifty HCM (90 sporadic hypertrophic cardiomyopathy [SHCM] and 60 familial hypertrophic cardiomyopathy [FHCM]) patients and 165 age- and sex-matched normal healthy controls without known hypertension and left ventricular hypertrophy were included in the study. DNA was isolated from peripheral leukocytes and the region of interest in the AGT gene bearing a missense mutation methionine to threonine substitution at codon 235 (M235T) of exon 2, was amplified by polymerase chain reaction (PCR). The PCR products were subjected to restriction digestion with the enzyme SfaNI. Results. Significant differences were detected in genotypic distribution ( p = 0.04) as well as the allelic frequency ( p = 0.003) between the SHCM patients and controls. The polymorphism did not show any association with FHCM. Conclusion. Our results suggest that the T allele of the AGT gene is significantly associated with SHCM in a South Indian population from Andhra Pradesh. However, we did not find significant association of this polymorphism with FHCM.