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Effect of prolonged treatment with neuroleptics on dopamine D-1 and D-2 receptor density in corpus striatum of mice.

作者信息

Hyttel J

出版信息

Acta Pharmacol Toxicol (Copenh). 1986 Nov;59(5):387-91. doi: 10.1111/j.1600-0773.1986.tb00189.x.

DOI:10.1111/j.1600-0773.1986.tb00189.x
PMID:2880451
Abstract

The effects of long-term treatment with neuroleptics on D-1 and D-2 receptor parameters in corpus striatum were studied in mice. Mice were treated daily for 12 days with the selective D-1 antagonist, the benzazepine SCH 23390, the mixed D-1/D-2 antagonist zuclopenthixol or the selective D-2 antagonist haloperidol. Three days after withdrawal Bmax and KD for 3H-SCH 23390 binding to D-1 receptors and 3H-spiperone binding to D-2 receptors were determined. The study showed that the density of D-2 receptors increased after haloperidol whereas no changes were seen after SCH 23390 or zuclopenthixol. No changes in D-1 receptor density were seen after either treatment. The results are in full agreement with published behavioural results where haloperidol induces tolerance whereas SCH 23390 or zuclopenthixol do not. Some changes in KD values were seen. The cause and meaning of these changes await further investigation.

摘要

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1
Effect of prolonged treatment with neuroleptics on dopamine D-1 and D-2 receptor density in corpus striatum of mice.
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Jpn J Pharmacol. 1989 Jul;50(3):333-45. doi: 10.1254/jjp.50.333.

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