Abstract
Objective: Diabetic nephropathy (DN) is one of the major microvascular complications of diabetes. Genetic predisposition has been implicated in DN. The eNOS protein synthesizes nitric oxide constitutively via a reaction including the conversion of L-arginine to L-citrulline, which involves the transfer of five electrons provided by nicotinamide adenine dinucleotide phosphate The aim of this study is to evaluate the association of G894T polymorphisms of endothelial nitric oxide synthase(eNOS) gene with the development of diabetic nephropathy (DN) among Egyptian patients with type 1,2 diabetes mellitus in Egypt. Methods: Study subjects comprised 86 patients of type 2 diabetes with nephropathy,23 patients of type 1 diabetes with nephropathy and 46 patients of type 2 diabetes without nephropathy. G894T genotypes was determined by SSP- PCR analysis. Results: Mutant T allele, GT and TT genotypes of G894TSNP had no significant frequencies in type 1,2 diabetic patients with nephropathy compared to those without nephropathy.. Conclusion: These findings indicate that G894T polymorphism of eNOS gene may be not considered as genetic risk factors for DN among Egyptian type1, 2 diabetic patients. Abbreviations: T2DM: type 2 diabetes mellitus – DN: diabetic nephropathy eNOS : Endothelial nitric oxide synthase:– SNP: single nucleotide polymorphism- SSP-PCR: sequence specific primer- polymerase chain reaction.
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