Effect of Meal Feeding on Daily Rhythms of Plasma Corticosterone and Growth Hormone in the Rat
作者:
G.P. Moberg,
L.L. Bellinger,
V.E. Mendel,
期刊:
Neuroendocrinology
(Karger Available online 1975)
卷期:
Volume 19,
issue 2
页码: 160-169
ISSN:0028-3835
年代: 1975
DOI:10.1159/000122436
出版商: S. Karger AG
关键词: Circadian rhythm;Corticosterone;Growth hormone;Meal feeding
数据来源: Karger
摘要:
After rats had adapted to regular meal feeding in the morning they demonstrated an altered circadian rhythm of plasma corticosterone (B) even under the normal light-dark cycle. The altered daily rhythm of plasma B consisted of two peaks, with one peak at 08.00 h in anticipation of meal feeding and a second peak corresponding to the normal peak of plasma B prior to lights-off seen in ad libitum-fed animals. Neither peak of plasma B in the meal-fed animals achieved the magnitude of the single peak observed in control animals. In spite of some quantitative differences during certain periods of the day, after the animals had adapted to meal feeding there was no difference in the basic profile of the daily rhythm of plasma immunoactive growth hormone (GH).
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