Related Experiment Video
Updated: May 12, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
eNOS gene variants and the risk of premature myocardial infarction
Aggeliki-Maria Zigra1, Loukianos S Rallidis, Georgia Anastasiou
1Laboratory of Haematology and Blood Transfusion Unit, Attikon Hospital, School of Medicine, University of Athens, Athina, Greece. zou2zigra@yahoo.gr
Background:
Endothelial nitric oxide synthase (eNOS) as well as nitric oxide play an important role in the regulation of cardiovascular function. There are limited and controversial data regarding the impact of polymorphisms of eNOS gene that is implicated in the vasoconstrictive properties of the endothelium in the pathogenesis of premature myocardial infarction (MI).
Objective:
We examined whether two common polymorphisms of eNOS gene (G894T and T786C) are associated with the development of premature MI.
Methods:
We recruited 107 patients with premature MI and compared them to 103 age- and sex- matched controls. All patients underwent coronary angiogram and were classified into the subgroup of patients with 'normal' or 'near normal' coronary arteries and the subgroup of patients with significant coronary artery disease (≥ 50% stenosis in lumen diameter of coronary arteries). The genetic polymorphisms of eNOS gene were assayed with polymerase chain reaction and reverse hybridization.
Results:
Nineteen patients (17.8%) had 'normal' or 'near normal' coronary arteries. A significantly higher frequency of homozygosity for the 786C (32%) and the 894T (21%) alleles of the eNOS gene in patients who develop early MI in the setting of angiographically 'normal' or 'near normal' coronary arteries were found.
Conclusions:
Our data suggest that the T786C and the G894T genetic polymorphisms are associated with the development of MI in very young individuals, whose coronary arteries are characterized by very small atheromatic burden.
Related Concept Videos
Principles of Pharmacogenetics: Types of Genetic Variants
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenomics: Identification of New Drug Targets
Human Genetics
The complex relationship between genetics and psychology is observable through common biological components such...
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
