Variation of monoamines and their metabolite contents in the cerebrospinal fluid of conscious rats

Yuji Wada, Toru Egashira, Fusako Takayama, Yasumitsu Yamanaka, Kaori Takada, Hiroshi Takeda, Teruhiko Matsumiya

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

To study the circadian rhythm of the monoamine and metabolite contents, cerebrospinal fluid was taken from the cisterna magna through a polyethylene catheter tube every 4 hr in the conscious rat. Norepinephrine and 3-methoxy-4-hydroxy-phenylglycol were found to describe a rhythm with the maximal content occurring during the dark phase and the minimal content occurring during the light phase. Dopamine levels increased significantly during the light phase compared with the dark phase. These results, given that cerebrospinal fluid can be taken chronically from conscious rats, indicate that our present method may be suitable for estimating changes in brain monoamine and metabolite contents.

Original languageEnglish
Pages (from-to)237-240
Number of pages4
JournalJapanese Journal of Pharmacology
Volume78
Issue number2
DOIs
Publication statusPublished - Oct 1 1998
Externally publishedYes

Keywords

  • Cerebrospinal fluid
  • Monoamine
  • Rhythm

ASJC Scopus subject areas

  • Pharmacology

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