The role of eNOS gene polymorphisms on contrast induced nephropathy development in chronic kidney disease patients

Introduction Contrast nephropathy is a result of contrast media given through intravascular routes. Nitric oxide gene polymorphisms may alter the hemodynamic stability resulting in medullary ischemia Nitric oxide gene polymorphisms may have an enhancing role in contrast media related renal injury. The aim of this study was to investigate the role of eNOS intron 4a/b, T786C, and G894T gene polymorphisms on contrast-nephropathy risk. Methods Ninety-four chronic kidney disease patients with contrast nephropathy and 120 chronic kidney disease patients without contrast nephropathy were included. DNA isolation was performed and specific regions of DNA for eNOS G894T, T786C, and intron 4a/b genes were amplified by polymerase chain reaction technique. Results TT polymorphism of T786C gene and GG polymorphism of G894T gene were detected to be possibly protective from contrast induced nephropathy. Conclusion Endothelial nitric oxide synthase G894T gene polymorphisms, older age, and presence of diabetes mellitus may influence contrast nephropathy development.