Effects of acute and chronic administrations of phencyclidine on the levels of serotonin and 5-hydroxyindoleacetic acid in discrete brain areas of mouse

Toshitaka Nabeshima, Masayuki Hiramatsu, Hiroshi Furukawa, Tsutomu Kameyama

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The effects of phencyclidine (PCP) on the levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) in discrete brain areas of mouse were investigated. Following a single administration, PCP significantly increased at 60 min the level of 5-HT but not 5-HIAA in the cortex. However, acute administration of PCP induced no changes of 5-HT and 5-HIAA levels in other brain areas investigated. On the other hand, chronic treatment of PCP produced a significant increase the striatal 5-HT and 5-HIAA levels by about 30% and 20%, respectively. These increased levels were gradually returned to the control levels, and there was no difference of these levels between the control group and the 48 hr withdrawal group. The changes of 5-HT level in the hypothalamus were similar to those in the striatum. These results suggest that the pharmacological actions of PCP and tolerance development to PCP may be related to the functional changes of serotonergic neuronal activity.

Original languageEnglish
Pages (from-to)939-946
Number of pages8
JournalLife Sciences
Volume36
Issue number10
DOIs
Publication statusPublished - 11-03-1985
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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