The increased oxidative stress has been reported to be involved in the development of hypertension by causing up-regulation of angiotensin II signaling,35 decreasing NO bioavailability,34 dysfunction of endothelial NO synthase,9 and reduction of the levels of reactive oxygen species scavenger.34 We therefore, measured the concentration of serum markers of oxidative stress. This evidence concerns the gene AGT and Hypertension.