Decreased level of light-induced Fos expression in the suprachiasmatic nucleus of diabetic rats

Shiro Yamanouchi, Takao Shimazoe, Seiko Nagata, Takahiro Moriya, Miyuki Maetani, Shigenobu Shibata, Shigenori Watanabe, Kyoko Miyasaka, Akira Kono, Akihiro Funakoshi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

We assessed light-induced Fos-immunoreactive cells in the suprachiasmatic nucleus of diabetic rats. The number of Fos-immunoreactive cells significantly decreased in diabetic Otsuka Long-Evans Tokushima Fatty (OLETF) rats as compared with control Long-Evans Tokushima Otsuka (LETO) rats. In contrast there was no decrease in the number of Fos-immunoreactive cells in young OLETF rats which have not yet developed diabetes. Two months after the administration of streptozotocin (STZ) to Wistar rats, the number of Fos-immunoreactive cells significantly decreased, although 1 week after the administration of STZ, the number had not yet changed in these STZ- induced diabetic rats. These results suggest that chronic diabetic (hyperglycemic) conditions may affect the light entraining responses in the suprachiasmatic nucleus (SCN).

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalNeuroscience Letters
Volume227
Issue number2
DOIs
Publication statusPublished - 1997 May 16

Keywords

  • Circadian rhythm
  • Diabetes
  • Fos
  • Otsuka Long-Evans Tokushima Fatty rats
  • Streptozotocin
  • Suprachiasmatic nucleus

ASJC Scopus subject areas

  • Neuroscience(all)

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