PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 171710-3 1975 These findings are suggestive of a second messenger role of cyclic AMP in the beta-adrenoreceptor-mediated actions of catecholamines on myocardial contractile force and relaxation, in which Ca2+ would serve as a third messenger and be subject, respectively, to more effective removal from its binding sites on troponin. Catecholamines 118-132 adenine phosphoribosyltransferase Homo sapiens 67-70 171710-4 1975 An alternative interpretation regards Ca2+ and cyclic AMP as interdependent twin second messengers in the catecholamine-induced inotropism. Catecholamines 106-119 adenine phosphoribosyltransferase Homo sapiens 54-57 171710-5 1975 Since the physiological meaning of the reported effects of cyclic AMP on isolated myocardial membrane preparations is far from established an instances of a dissociation between the effects of catecholamines on myocardial contractile force and cyclic AMP levels have been observed, there is still room for hypotheses that relegate cyclic AMP to a nonobligatory, at most, supportive role in the action of the catecholamines on cardiac contraction. Catecholamines 408-422 adenine phosphoribosyltransferase Homo sapiens 251-254 171710-5 1975 Since the physiological meaning of the reported effects of cyclic AMP on isolated myocardial membrane preparations is far from established an instances of a dissociation between the effects of catecholamines on myocardial contractile force and cyclic AMP levels have been observed, there is still room for hypotheses that relegate cyclic AMP to a nonobligatory, at most, supportive role in the action of the catecholamines on cardiac contraction. Catecholamines 408-422 adenine phosphoribosyltransferase Homo sapiens 251-254 72410-4 1977 In guinea-pig and human lung fragments, catecholamines and PGs increase cyclic AMP levels and inhibit the release of histamine, SRS-A and ECF-A following antigen challenge. Catecholamines 40-54 adenine phosphoribosyltransferase Homo sapiens 79-82