当前位置： SCI文献检索 > PSYCHOPHARMACOLOGY期刊下所有文献 > A comparison of the effects of sibutramine hydrochloride, bupropion and methamphetamine on dopaminergic function: evidence that dopamine is not a pharmacological target for sibutramine.

A comparison of the effects of sibutramine hydrochloride, bupropion and methamphetamine on dopaminergic function: evidence that dopamine is not a pharmacological target for sibutramine.

Abstract：

:Sibutramine hydrochloride, a novel monoamine reuptake inhibitor antidepressant, has been studied to determine whether it alters dopaminergic function in the brain. Its effects have been compared with bupropion, a dopamine reuptake inhibitor, and methamphetamine, a dopamine reuptake inhibitor and releasing agent. Sibutramine (0.1-3 mg/kg PO) and methamphetamine (0.3-30 mg/kg PO) both prevented reserpine (0.75 mg/kg IV) ptosis in rats with ED50 values of 0.6 mg/kg and 4.2 mg/kg, respectively. Bupropion (10-100 mg/kg PO) was ineffective against reserpine ptosis. The efflux of [3H]-dopamine from preloaded rat striatal slices was not altered by 10(-7)-10(-5) M concentrations of sibutramine, BTS 54,354, BTS 54,505 (secondary and primary amine metabolites, respectively) or bupropion. In contrast, methamphetamine (10(-8)-10(-4) M) caused a significant concentration-dependent increase in [3H]-dopamine release. Sibutramine (3 mg/kg IP or 6 mg/kg PO) and bupropion (10 mg/kg IP or 30 mg/kg PO) did not alter 3-methoxytyramine (3-MT) levels in rat striatum. Striatal 3-MT concentrations were, however, dose-dependently increased by methamphetamine (0.3-10 mg/kg IP or 0.42-4.2 mg/kg PO). Sibutramine (6 mg/kg PO) did not induce circling in rats with unilateral 6-hydroxydopamine lesions of the nigrostriatal dopaminergic neuronal tract. Bupropion (10-100 mg/kg PO) did not induce circling at the lowest dose, but caused increasing ipsilateral rotation at higher doses. Methamphetamine (0.42 or 4.2 mg/kg PO) induced ipsilateral circling with marked effects at the higher dose.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Psychopharmacology (Berl)

journal_title

Psychopharmacology

authors

Heal DJ,Frankland AT,Gosden J,Hutchins LJ,Prow MR,Luscombe GP,Buckett WR

doi

10.1007/BF02245152

subject

Has Abstract

pub_date

1992-01-01 00:00:00

pages

303-9

issue

2-3

eissn

0033-3158

issn

1432-2072

journal_volume

107

pub_type

杂志文章

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