General Cardiology, Basic Science
The Effects of Antihypertensive Agents on Atherosclerosis-Related Parameters of Human Aorta Intimal CellsOrekhov A.N. · Tertov V.V. · Pivovarova E.M.
Institute of Experimental Cardiology, Cardiology Research Center, Moscow, Russia
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Four antihypertensive agents – amlodipine, verapamil, propranolol and perindoprilat – were studied in human cell cultures. Antiatherogenic activity was investigated using uninvolved human aortic smooth muscle intima cells and atherogenic serum obtained from patients with coronary atherosclerosis. Amlodipine and verapamil significantly inhibited serum-induced increases in cholesterol content, cell-proliferative activity and protein synthesis in the cultured cells. Propranolol increased all three parameters, while perindoprilat had no effects. In addition, amlodipine and verapamil significantly lowered the intracellular cholesterol content of smooth muscle cells derived from atherosclerotic plaque and inhibited cell proliferation and protein synthesis. Propranolol increased all of these parameters, while perindoprilat produced no effects. The antiatherogenic and antiatherosclerotic actions of verapamil and amlodipine were confirmed in an ex vivo model. These studies demonstrated a beneficial antiatherosclerotic effect of amlodipine that was greater than that of verapamil. Perindoprilat had a neutral effect on atherosclerotic parameters, while the action of propranolol appeared to be potentially detrimental.
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