Stimulatory effects of prostaglandin E2 on neurogenesis in the dentate gyrus of the adult rat

Katsuya Uchida, Kentarou Kumihashi, Satoshi Kurosawa, Tetsuya Kobayashi, Keiichi Itoi, Takeo Machida

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Neurogenesis in the dentate gyrus of adult rodents is elicited by transient global ischemia. Cyclooxygenase (COX) -2, a rate-limiting enzyme for prostanoid synthesis, is also induced by ischemia. We recently found that the administration of a non-selective COX inhibitor to ischemic animals suppressed cell proliferation in the subgranular zone (SGZ) at the dentate gyrus of the hippocampus. To clarify whether prostaglandin E2 (PGE2) synthesis by COX's is involved in neurogenesis, sulprostone, an analogue of PGE2, was injected into the rat hippocampus. Sulprostone injection increased the number of 5-bromo-2′-deoxyuridine (BrdU)-positive cells in the SGZ. BrdU-positive cells also expressed polysialylated isoforms of neural cell adhesion molecule and neuronal nuclear antigen. These results suggest that PGE2 plays an important role in the proliferation of cells in the SGZ.

Original languageEnglish
Pages (from-to)1211-1216
Number of pages6
JournalZoological Science
Volume19
Issue number11
DOIs
Publication statusPublished - 2002 Nov 1

Keywords

  • Cyclooxygenase-2
  • Dentate gyrus
  • Hippocampus
  • Neurogenesis
  • Prostaglandin

ASJC Scopus subject areas

  • Animal Science and Zoology

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