The effects of antihypertensive agents on atherosclerosis-related parameters of human aorta intimal cells

Area of Science:

• Cardiovascular Pharmacology
• Atherosclerosis Research

Background:

• Atherosclerosis is a complex disease involving lipid accumulation and smooth muscle cell proliferation.
• Antihypertensive agents are widely used, but their direct effects on atherosclerotic processes require further investigation.

Purpose of the Study:

• To evaluate the antiatherogenic and antiatherosclerotic potential of four antihypertensive drugs: amlodipine, verapamil, propranolol, and perindoprilat.
• To compare the effects of these agents on human aortic smooth muscle cells and in an ex vivo model.

Main Methods:

• Human aortic smooth muscle cells and serum from patients with coronary atherosclerosis were used in cell culture experiments.
• Intracellular cholesterol content, cell proliferation, and protein synthesis were measured.
• An ex vivo model was employed to confirm antiatherosclerotic actions.

Main Results:

• Amlodipine and verapamil significantly inhibited serum-induced increases in cholesterol, proliferation, and protein synthesis.
• Propranolol increased these parameters, indicating a potentially detrimental effect.
• Perindoprilat demonstrated a neutral effect on all measured atherosclerotic parameters.
• Amlodipine exhibited a greater antiatherosclerotic effect than verapamil in ex vivo studies.

Conclusions:

• Amlodipine and verapamil possess significant antiatherogenic and antiatherosclerotic properties.
• The antiatherosclerotic effect of amlodipine is more pronounced than that of verapamil.
• Propranolol may have detrimental effects on atherosclerotic processes, while perindoprilat appears neutral.