Abstract:
:The aim of the present study was the investigation of pretreatment effects with clonidine (0.06 mg/kg, intraperitoneal [i.p.]), lithium (1 mEq, i.p.) or quinine (0.5 mg/kg, i.p.) on the activities of various drugs acting on noradrenergic and/or serotonergic systems in the mouse tail suspension test. Drugs used in the present study included: the tricyclic antidepressants imipramine and dothiepin, the heterocyclic antidepressant trazodone, the 5-HT reuptake inhibitor (SSRI) fluoxetine, the atypical antidepressants mianserin and iprindole, the 5-HT1A receptor agonist ipsapirone, the 5-HT2A/2C receptor antagonist ritanserin, and the 5-HT3 receptor antagonist ondansetron. Clonidine, lithium and quinine differentially enhanced the effects of several psychotropic/drugs administered at sub-active doses. The activity of iprindole (32 mg/kg, i.p.) was not potentiated by pretreatment with clonidine, lithium or quinine. Our results suggest that lithium exerted additive effects via postsynaptic 5-HT1A receptor activation, quinine via potassium ion channel blockade of 5-HT3 receptors, while clonidine did so primarily via action at 5-HT2 receptors.
journal_name
Fundam Clin Pharmacoljournal_title
Fundamental & clinical pharmacologyauthors
Redrobe JP,Bourin Mdoi
10.1111/j.1472-8206.1997.tb00199.xsubject
Has Abstractpub_date
1997-01-01 00:00:00pages
381-6issue
5eissn
0767-3981issn
1472-8206pii
S0767398197814156journal_volume
11pub_type
杂志文章abstract::In addition to their effects on blood pressure, antihypertensive agents may produce additional effects on blood rheology and arterial compliance abnormalities which may play a role in target-organ damage. However, these effects may depend only on the specific pharmacological properties of certain antihypertensive agen...
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