Impaired Striatal Dopamine Receptor Development: Differential D-1 Regulation in Adults
Document Type
Article
Publication Date
9-23-1988
Description
Previous reports have indicated that prenatal, but not postnatal, haloperidol impairs the ontogenic development of striatal dopamine D-2 receptors. In the present study a specific D-2 receptor antagonist, spiroperidol (1.0 mg/kg i.p.) and/or a specific D-1 receptor antagonist, SCH 23390 (0.30 mg/kg i.p.), was administered to rats for 32 successive days from birth. Postnatal spiroperidol and SCH 23390 treaments markedly impaired the development of striatal dopamine D-2 and D-1 receptors, respectively, at 12 weeks after birth. Spiroperidol did not affect D-1 receptor development and did not modify the effect of SCH 23390 treatment. Also, SCH 23390 did not affect D-2 receptor development and did not modify the effect of spiroperidol treatment. When rats with impaired development of striatal D-2 receptors were challenged at 12 weeks with spiroperidol (1.0 mg/kg per day i.p. × 17 days) D-2 receptors did not up-regulate. However, when rats with impaired development of striatal D-1 receptors were challenged at 12 weeks with SCH 23390 (0.30 mg/kg per day i.p. × 17 days) D-1 receptors did up-regulate. These findings demonstrate that postnatal treatment with D-1 and D-2 receptor antagonists can permanently impair the development of striatal D-1 and D-2 receptors. Moreover, the ability of developmentally impaired striatal D-1 receptors to up-regulate in adulthood appears to be greater than that for the developmentally impaired striatal D-2 receptors.
Citation Information
Saleh, M. I.; and Kostrzewa, Richard M.. 1988. Impaired Striatal Dopamine Receptor Development: Differential D-1 Regulation in Adults. European Journal of Pharmacology. Vol.154(3). 305-311. https://doi.org/10.1016/0014-2999(88)90206-3 PMID: 3069481 ISSN: 0014-2999