Abstract:The hypothesis that inhibitory effects of isoprenaline on myometrial contractility may be constrained by activation of putative intracellular beta-adrenoceptors negatively-coupled to adenylate cyclase was examined. Field-stimulated preparations of guinea-pig and human myometrium were used to examine the influence of the catecholamine extraneuronal uptake2 inhibitors, corticosterone and beta-oestradiol, on the inhibitory effects of the beta-adrenoceptor agonist, isoprenaline, on uterine contraction. Longitudina… Show more
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