Abstract:
:Serotonin causes a dose related (0.1-20 micrograms/kg i.v.) increase in mean arterial blood pressure (MAP) and heart rate in conscious sheep. Ketanserin (0.1 mg/kg per h i.v.) causes a decrease in blood pressure, and an increase in heart rate. In the presence of ketanserin, serotonin induced increases in MAP are attenuated, or abolished, but the increases in heart rate are enhanced. Ketanserin (10 mg/kg per h i.v.) attenuates or abolishes the increase in blood pressure induced by the alpha-adrenoceptor agonist phenylephrine in conscious sheep. When administered in the presence of the alpha-adrenoceptor antagonist prazosin, ketanserin (0.1 mg/kg per h i.v.) fails to induce a further hypotensive response. These data suggest that in the conscious sheep ketanserin exhibits predominantly alpha-adrenoceptor antagonism.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Nelson MA,Coghlan JP,Denton DA,Mills EH,Spence CD,Whitworth JA,Scoggins BAdoi
10.1111/j.1440-1681.1984.tb00872.xsubject
Has Abstractpub_date
1984-11-01 00:00:00pages
597-604issue
6eissn
0305-1870issn
1440-1681journal_volume
11pub_type
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