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Improvement in Endothelial Function in Men Taking Phosphodiesterase Type 5 Inhibitors for Erectile Dysfunction.
American Journal of Medicine 2023 October
BACKGROUND: The purpose of this research was to explore the mechanistic protective cardiovascular effects of phosphodiesterase-5 inhibitors (PDE5-Is) in males with erectile dysfunction. Erectile dysfunction and endothelial dysfunction both precede clinical atherosclerosis. Studies have shown that treatment for erectile dysfunction with PDE5-Is decreased death, heart failure, myocardial infarction, and revascularization in males with erectile dysfunction who had previous myocardial infarction, and cardiovascular events.
METHODS: This was a pilot study that recruited 5 men with erectile dysfunction without cardiovascular disease. Endothelial function (flow-mediated percent change of the diameter of the brachial artery), erectile dysfunction grade, high-sensitivity C-reactive protein, and body mass index were measured before and 3 months after starting treatment with tadalafil, 5 mg daily. Pearson's analysis was performed to study a correlation between the change in erectile dysfunction and the change in endothelial function.
RESULTS: A significant correlation was found between changes in flow-mediated percent change of the diameter of the brachial artery and changes in erectile dysfunction following the administration of tadalafil (P = .010; Pearson correlation coefficient = 0.959). No change was observed in C-reactive protein or weight.
CONCLUSIONS: Erectile dysfunction and endothelial dysfunction are risk factors for cardiovascular disease. Our study showed that PDE5-Is improved endothelial function and erectile dysfunction (with a significant correlation). Improving endothelial function could be the mechanism that leads to a reduction in cardiovascular events and death in men with erectile dysfunction treated with PDE5-Is.
METHODS: This was a pilot study that recruited 5 men with erectile dysfunction without cardiovascular disease. Endothelial function (flow-mediated percent change of the diameter of the brachial artery), erectile dysfunction grade, high-sensitivity C-reactive protein, and body mass index were measured before and 3 months after starting treatment with tadalafil, 5 mg daily. Pearson's analysis was performed to study a correlation between the change in erectile dysfunction and the change in endothelial function.
RESULTS: A significant correlation was found between changes in flow-mediated percent change of the diameter of the brachial artery and changes in erectile dysfunction following the administration of tadalafil (P = .010; Pearson correlation coefficient = 0.959). No change was observed in C-reactive protein or weight.
CONCLUSIONS: Erectile dysfunction and endothelial dysfunction are risk factors for cardiovascular disease. Our study showed that PDE5-Is improved endothelial function and erectile dysfunction (with a significant correlation). Improving endothelial function could be the mechanism that leads to a reduction in cardiovascular events and death in men with erectile dysfunction treated with PDE5-Is.
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