Chronic treatment with clozapine, but not haloperidol, increases striatal ecto-5'-nucleotidase activity in rats.

Abstract:

:In the search for differential mechanisms underlying clozapine's superior antipsychotic efficacy, the purinergic system has been considered, since an antagonist of the adenosine receptor A(2A) was shown to block clozapine acute effects on c-fos expression in rat striatum. Further investigating the interaction of clozapine with the purinergic system, we studied the effects of chronic treatment (28 days, intraperitoneal) with clozapine (25 mg/kg) and haloperidol (1.5 mg/kg) on the activity of ectonucleotidases in the striatum and hippocampus of rats. Clozapine selectively increased striatal 5'-nucleotidase activity (22%) compared to control and haloperidol groups. In vitro, neither drug affected enzyme activities. These results reinforce the differential effects of clozapine compared to haloperidol on the purinergic system.

journal_name

Neuropsychobiology

journal_title

Neuropsychobiology

authors

Lara DR,Vianna MR,de Paris F,Quevedo J,Oses JP,Battastini AM,Sarkis JJ,Souza DO

doi

10.1159/000054925

keywords:

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

99-102

issue

2

eissn

0302-282X

issn

1423-0224

pii

54925

journal_volume

44

pub_type

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