Circadian changes in arginine vasopressin level in the suprachiasmatic nuclei in the rat

Keitaro Yamase, Sumio Takahashi, Kouji Nomura, Kazuhiko Haruta, Seiichiro Kawashima

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Arginine vasopressin (AVP) neurons were preferentially localized in the dorsomedial part of the suprachiasmatic nucleus (SCN). To know the role of AVP neurons in the SCN, male rats were kept under a normal light-dark cycle (L-D), or under constant darkness (D-D) for 20 days. In L-D condition, AVP levels in the SCN showed the circadian change. In D-D condition, the patterns in AVP levels showed a free-running rhythm, and an about 12-h shift per 20 days. This result suggests that the activity of AVP neurons may be closely associated with the endogenous circadian rhythm of the SCN.

Original languageEnglish
Pages (from-to)255-258
Number of pages4
JournalNeuroscience Letters
Volume130
Issue number2
DOIs
Publication statusPublished - Sep 16 1991
Externally publishedYes

Keywords

  • Arginine vasopressin
  • Circadian rhythm
  • Rat
  • Suprachiasmatic nuleus

ASJC Scopus subject areas

  • Neuroscience(all)

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