To determine whether the therapeutic effectiveness of testosterone in male elderly coronary heart disease patients is related to the production of nitric oxide (NO), which accounts for the biological activity of endot...To determine whether the therapeutic effectiveness of testosterone in male elderly coronary heart disease patients is related to the production of nitric oxide (NO), which accounts for the biological activity of endothelium derived relaxing factor (EDRF), we studied the regulatory effect of testosterone on production of NO/EDRF in the aorta and cultured vascular endothelial cells. The production of NO/EDRF was detected by the stimulation of cGMP formation in rabbit fetal lung-6 cells. The results showed that testosterone stimulated the production of NO/EDRF in both the aorta and cultured vascular endothelial cells, suggesting that NO/EDRF-dependent vasodilation is one of the mechanism by which testosterone alleviates angina pectoris and improves myocardial ischemia in elderly male coronary heart disease patients.展开更多
文摘To determine whether the therapeutic effectiveness of testosterone in male elderly coronary heart disease patients is related to the production of nitric oxide (NO), which accounts for the biological activity of endothelium derived relaxing factor (EDRF), we studied the regulatory effect of testosterone on production of NO/EDRF in the aorta and cultured vascular endothelial cells. The production of NO/EDRF was detected by the stimulation of cGMP formation in rabbit fetal lung-6 cells. The results showed that testosterone stimulated the production of NO/EDRF in both the aorta and cultured vascular endothelial cells, suggesting that NO/EDRF-dependent vasodilation is one of the mechanism by which testosterone alleviates angina pectoris and improves myocardial ischemia in elderly male coronary heart disease patients.