Indian Journal of Medical Research

ORIGINAL ARTICLE
Year
: 2011  |  Volume : 133  |  Issue : 5  |  Page : 487--491

Prevalence of endothelial nitric oxide synthase (eNOS) gene exon 7 Glu298Asp variant in North Eastern India


Priyanka Shankarishan1, Prasanta Kumar Borah1, Giasuddin Ahmed2, Jagadish Mahanta1 
1 Regional Medical Research Centre, NE Region (ICMR), Dibrugarh, India
2 Department of Biotechnology, Gauhati University, Guwahati, Assam, India

Correspondence Address:
Jagadish Mahanta
Director, Regional Medical Research Centre (ICMR), NE Region, Dibrugarh 786 001, Assam
India

Background & objectives : Endothelial nitric oxide is a potent vasodilator and impairment of its generation brought about by gene polymorphism is considered a major predictor for several diseases. A single nucleotide polymorphism G894T within exon 7 of endothelial nitric oxide synthase (eNOS-7) gene, resulting in a replacement of glutamic acid by aspartic acid, has been studied as a putative candidate gene for cardiovascular diseases. The pattern of eNOS-7 Glu298Asp variant in the Indian population is poorly known. The present study was planned to determine the prevalence of the variant of this gene among tea garden community in Assam, North-East India with high prevalence of hypertension. Methods : Study participants of both sex aged ≥18 yr were recruited randomly from temporary field clinics established in tea gardens of Dibrugarh, Assam. Genomic DNA was extracted from 409 subjects by the conventional phenol-chloroform method. The prevalence of the eNOS exon 7 Glu298Asp variant was determined by polymerase chain reaction and restriction fragment length polymorphism analysis. Results : The study population was in Hardy-Weinberg Equilibrium. The frequency of the eNOS GG, GT and TT genotypes was found to be 75, 22 and 3 per cent respectively and did not show any significant difference in gender wise analysis. Interpretation & conclusions : Our results showed that the prevalence of the homozygous GG genotype was high (75%) and the rare mutant genotype (homozygous, TT) was 3 per cent in a population at risk with cardiovascular disease. Such population-based data on various polymorphisms can ultimately be exploited in pharmacogenomics.


How to cite this article:
Shankarishan P, Borah PK, Ahmed G, Mahanta J. Prevalence of endothelial nitric oxide synthase (eNOS) gene exon 7 Glu298Asp variant in North Eastern India.Indian J Med Res 2011;133:487-491


How to cite this URL:
Shankarishan P, Borah PK, Ahmed G, Mahanta J. Prevalence of endothelial nitric oxide synthase (eNOS) gene exon 7 Glu298Asp variant in North Eastern India. Indian J Med Res [serial online] 2011 [cited 2021 Mar 8 ];133:487-491
Available from: https://www.ijmr.org.in/article.asp?issn=0971-5916;year=2011;volume=133;issue=5;spage=487;epage=491;aulast=Shankarishan;type=0