简介内容：A-80b is a synthesized pyridazino[4,5-b]indole derivate with potent and long-lasting antihypertensive activity. The decrease in diastolic pressure was greater than the decrease in systolic pressure and cardiac frequency was not modified significantly. A-80b shows dose-dependent inhibition of the Ca(2+)-induced contraction. Hypotensive and antihypertensive effect of A-80b possibly attributable to vasodilator activity via interference with Ca2+ influx and probably Ca2+ mobilization from intracellu
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