Abstract:The effects of cicletanine ((+/-)-cic)), its optical isomers (BN-50417,(+)-cic); (BN-50418,(-)-cic) and major metabolite (BN-50699,cic-Met) on active tension were investigated in rat thoracic aortas. (+/-)-cic, (+)-cic, (-)-cic shifted the K(+)-concentration response curve to the right and depressed the maximum contractile response. Cic-Met was devoid of inhibitory effect on K(+)-induced contractions. (-)-Pinacidil had a far more potent inhibitory effect on K(+)-induced contractions than the cicletanine enanti… Show more
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