☆ 4.3 Article

Impairment of memory consolidation by galanin correlates with in vivo inhibition of both LTP and CREB phosphorylation

NEUROBIOLOGY OF LEARNING AND MEMORY (2009)

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NEUROBIOLOGY OF LEARNING AND MEMORY
卷 92, 期 3, 页码 429-438

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nlm.2009.06.005

关键词

Galanin; pCREB; Morris water maze; LTP; In vivo; Learning and memory

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Behavioral Sciences Neurosciences Psychology Psychology, Multidisciplinary

资金

  1. Intramural NIH HHS [Z01 MH002179-22] Funding Source: Medline
  2. NIMH NIH HHS [R01 MH074055-02, R01 MH074055] Funding Source: Medline

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Changes in the state of CREB phosphorylation and in LTP in the hippocampus have been associated with learning and memory. Here we show that galanin, the neuropeptide released in the hippocampal formation from cholinergic and noradrenergic fibers, that has been shown to produce impairments in memory consolidation in the Morris water maze task inhibits both LTP and CREB phosphorylation in the rat hippocampus in vivo. While there are many transmitters regulating CREB phosphorylation none has been shown to suppress behaviorally-induced hippocampal CREB phosphorylation as potently as galanin. The in vivo inhibition of dentate gyrus-LTP and of CREB phosphorylation by the agonist occupancy of GalR1 and GalR2-type galanin receptors provides strong in vivo cellular and molecular correlates to galanin-induced learning deficits and designates galanin as a major regulator of the memory consolidation process. (C) 2009 Elsevier Inc. All rights reserved.

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