Journal
NEUROPHARMACOLOGY
Volume 46, Issue 5, Pages 700-708Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropharm.2003.11.009
Keywords
self-injurious behavior; risperidone; mice; dopamine; serotonin; autism
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Funding
- NIEHS NIH HHS [ES-05022, ES-11256] Funding Source: Medline
- NINDS NIH HHS [R21-NS43981] Funding Source: Medline
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The behavioral and neurochemical effects of high doses of amphetamine administered to BALB/c mice were examined in the presence and absence of co-administered haloperidol (a D-2 antagonist), SCH 23390 (a D-1 antagonist) and risperidone (a mixed 5-HT2/D-2 antagonist). It was observed that mice displayed a dose-dependent increase in stereotypic behavior, oral dyskinesia, and self-injurious behavior (SIB) in response to amphetamine treatment. Furthermore, agents that blocked the SIB reversed the amphetamine-induced release of serotonin. This effect was unrelated to hyperthermia or non-specific sedation (as assessed by measurement of motor activity). These data are interpreted in the context of the underlying basis of murine SIB involving both dopaminergic and serotonergic activation and demonstrate the efficacy of risperidone in treating these behaviors. (C) 2004 Elsevier Ltd. All rights reserved.
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