Abstract
Several studies have shown that high oxidative stress levels are associated with varicocele. The GST (glutathione S-transferase) family of genes is critical in the protection of cells from oxidative stress because they utilise as substrates a wide variety of products of oxidative stress. The objective of this study was to assess the relationship between genetic polymorphism in GST-M1 and GST-T1 and varicocele using 109 varicocele patients and 123 controls. Varicoceles were clinically graded as Grade 1, Grade 2 and Grade 3. GST-M1 and GST-T1 genes were determined by polymerase chain reaction. Although the GST-M1 null genotype was higher in Grade 3 than in Grade 1, 2 and controls, there were no statistical differences between control group and varicocele groups according to GST-M1 and GST-T1 null genotype. Men with varicocele do not have more GST-M1 and GST-T1 null polymorphisms than men without varicocele. Additional studies are needed to assess the exact mechanism by which the varicocele corresponds to elevated ROS levels.
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