Abstract
The mechanisms orchestrating the balance between nitric oxide and endothelium-derived contracting factors, and genetic predisposition to endothelial dysfunction in hypertensive patients remain to be determined. One-hundred hypertensive patients participated in the case-control study to clarify the risk of endothelial dysfunction and carotid "intima media" thickness (IMT) changes depending on NOS3 (rs2070744) and GNB3 (rs5443) genes' polymorphisms. It is found that presence of NOS3 gene's С-allele significantly elevates the risk of atherosclerotic plaques on carotid arteries (OR95%CI: 1.24-11.20; р = 0.019) and the probability of low NOS3 gene expression (OR95%CI: 17.72-520.0; р < 0.001). Homozygous carriage of С-allele of GNB3 gene is protective and corresponds to the lowest chances of the carotid IMT increase, atherosclerotic plaques formation and sVCAM-1 elevation (OR = 0.10-0.34; OR95%CI: 0.03-0.95; р ≤ 0.035-0.001). Vice versa, Т-allele of GNB3 gene significantly augments the risk of the carotid IMT increase (OR95%CI: 1.09-7.74; р = 0.027) including development of atherosclerotic plaques, associating GNB3 (rs5443) with cardiovascular pathology.
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