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 RESEARCH ARTICLE
Year : 2013  |  Volume : 45  |  Issue : 1  |  Page : 9-12

Effect of eNOS polymorphisms on salbutamol evoked endothelium dependent vasodilation in South Indian healthy subjects


Pharmacogenomics Laboratory, Department of Pharmacology, JIPMER, Pondicherry, India

Correspondence Address:
Srinivasamurthy Suresh Kumar
Pharmacogenomics Laboratory, Department of Pharmacology, JIPMER, Pondicherry
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7613.106427

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Background: The model of pulse plethysmograph using inhalational salbutamol 400 mcg is studied well to assess endothelium dependent vasodilation. Endothelial nitric oxide synthase (eNOS) gene polymorphism may influence the response to salbutamol in healthy subjects. Aim: To find the effect of polymorphisms 894G>T and -786T>C of eNOS gene on endothelium dependent vasodilation in healthy subjects. Materials and Methods: One hundred and two south Indian healthy subjects of either sex, aged between 18 to 35 years were recruited for the study. The digital volume pulse (DVP)was measured by pulse plethysmograph before and after salbutamol 400mcg inhalation. Three predose and five postdose recordings of DVP were measured. The average change in the DVP parameters namely reflection index (RI) and stiffness index (SI) were determined. The eNOS894G>T and -786T>C gene polymorphism were genotyped using polymerase chain reaction followed by restriction fragment length polymorphism. The percentage changes in RI and SI from predose baseline recordings were calculated and compared between the genotype groups. Results: The genotype and allele frequency of study subjects were in Hardy-Weinberg equilibrium. The changes in DVP parameters were not significantly different between the genotype groups. Conclusion: eNOS polymorphism do not affect salbutamol evoked endothelium dependent vasodilation in the model of pulse plethysmograph in healthy subjects.






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