Centrally Administered Norepinephrine Modifies the Behavior Induced by Corticotropin-Releasing Factor in Neonatal Chicks

Rong Zhang, Tetsuya Tachibana, Tomo Takagi, Tomoyuki Koutoku, D. Michael Denbow, Mitsuhiro Furuse

Research output: Contribution to journalArticle

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Abstract

We previously reported that glucagon-like peptide-1 decreased corticotropin-releasing factor (CRF)-induced behaviors in neonatal chicks, and such an effect is hypothesized to act through norepinephrine (NE). Experiments were designed to explore the effect of the NE on CRF-induced behaviors. In experiment 1, the chicks were intracerebroventricularly (i.c.v.) administered saline, 0.1 μg of CRF, 50.0 μg of NE, or 0.1 μg of CRF with 50.0 μg of NE. Behavior was monitored for the 10 min immediately after i.c.v. injection, and plasma corticosterone was analyzed at the end of behavior tests. Compared with the control, chicks were excited by CRF as evidenced by increased spontaneous activity and distress vocalizations (DVs). NE decreased the spontaneous activity of chicks, and the differences diverged with time. DVs completely disappeared in the presence of NE, and sleep-like (sitting with eyes closed) behavior was observed in the same birds. NE-treated birds spent most of the time in a sleep-like posture irrespective of CRF treatment. CRF-treated chicks had increased plasma corticosterone, whereas NE injection caused a decrease in corticosterone. In experiment 2, the effect of NE was further studied using i.c.v. administration with either 0.1 μg of CRF alone or 0.1 μg of CRF plus 12.5, 25.0, or 50.0 μg of NE. NE dose dependently modified the CRF-induced locomotor activity in the open field, and DVs disappeared when chicks were given any dose of NE with CRF. With these findings taken together, it is suggested that central NE interacts the CRF-induced behaviors in neonatal chicks.

Original languageEnglish
Pages (from-to)630-636
Number of pages7
JournalJournal of Neuroscience Research
Volume74
Issue number4
DOIs
Publication statusPublished - Nov 15 2003

Fingerprint

Corticotropin-Releasing Hormone
Norepinephrine
Corticosterone
Birds
Sleep
Injections
Glucagon-Like Peptide 1
Locomotion
Posture

All Science Journal Classification (ASJC) codes

  • Cellular and Molecular Neuroscience

Cite this

Centrally Administered Norepinephrine Modifies the Behavior Induced by Corticotropin-Releasing Factor in Neonatal Chicks. / Zhang, Rong; Tachibana, Tetsuya; Takagi, Tomo; Koutoku, Tomoyuki; Denbow, D. Michael; Furuse, Mitsuhiro.

In: Journal of Neuroscience Research, Vol. 74, No. 4, 15.11.2003, p. 630-636.

Research output: Contribution to journalArticle

Zhang, Rong ; Tachibana, Tetsuya ; Takagi, Tomo ; Koutoku, Tomoyuki ; Denbow, D. Michael ; Furuse, Mitsuhiro. / Centrally Administered Norepinephrine Modifies the Behavior Induced by Corticotropin-Releasing Factor in Neonatal Chicks. In: Journal of Neuroscience Research. 2003 ; Vol. 74, No. 4. pp. 630-636.
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