Abstract:
:Vasodilation, in vitro, evoked by atrial extracts (cardionatrin) was compared with the relaxation due to acetylcholine and papaverine in rat precontracted aortae with and without endothelium. Ventricular extracts were tested as controls. Atrial extracts and papaverine caused a similar concentration-dependent relaxation of both preparations whereas acetylcholine failed to relax preparations without endothelium. Ventricular extracts were ineffective on both preparations. It is concluded that the response of the preparations to atrial extracts (cardionatrin) is not dependent on the presence of the endothelial cells. Some pathophysiological implications are discussed.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Scivoletto R,Carvalho MHdoi
10.1016/0014-2999(84)90040-2subject
Has Abstractpub_date
1984-05-18 00:00:00pages
143-5issue
1-2eissn
0014-2999issn
1879-0712pii
0014-2999(84)90040-2journal_volume
101pub_type
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