doi: 10.1111/j.1476-5381.1978.tb07758.x.
Characterization of receptors mediating 5-hydroxytryptamine- and catecholamine-induced platelet aggregation, assessed by the actions of alpha- and beta-blockers, butyrophenones, 5-HT antagonists and chlorpromazine
- PMID: 26445
- PMCID: PMC1668039
- DOI: 10.1111/j.1476-5381.1978.tb07758.x
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Characterization of receptors mediating 5-hydroxytryptamine- and catecholamine-induced platelet aggregation, assessed by the actions of alpha- and beta-blockers, butyrophenones, 5-HT antagonists and chlorpromazine
Br J Pharmacol.
1978 Apr.
Abstract
1 Blood platelets from normal human volunteers were isolated and aggregated in vitro with 5-hydroxytryptamine (5-HT), noradrenaline (NA), dopamine and N-dimethyldopamine (DMDA). 2 The effects of 5-HT antagonists, alpha- and beta-adrenoceptor blocking agents, butyrophenones and chlorpromazine upon aggregation induced by the four amines were investigated. 3 Only the the 5-HT antagonists, chlorpromazine and spiroperidol were potent inhibitors of 5-HT-induced aggregation, and only phentolamine was a potent inhibitor of the catecholamine-induced aggregation. 4 Evidence was obtained for two populations of receptors, one for 5-HT and one for the three catecholamines.
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