The effect of chronic intermittent hypoxia to hypothalamus-pituitary-adrenal axis and growth hormone level in rats during sleep / 中国应用生理学杂志
Chinese Journal of Applied Physiology
; (6): 414-417, 2005.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-254645
Responsible library:
WPRO
ABSTRACT
<p><b>AIM</b>To research the effect of intermittent hypoxia during sleep on hypothalamus-pituitary-adrenal (HPA) axis and growth hormone (GH) level.</p><p><b>METHODS</b>Rats were respectively exposed to intermittent hypoxia, room air and continuous hypoxia, after 1 day, 3 days, 7 days and 30 days, mRNA levels of corticotropin-releasing hormone (CRH) and growth hormone releasing hormone (GHRH) in hypothalamus of rats were detected using RT-PCR, and the levels of CRH, GHRH, corticotropin(ACTH), cortex ketone, and growth hormone in plasma were measured.</p><p><b>RESULTS</b>After 30 days, the CRH mRNA levels in rats hypothalamus which exposed to intermittent hypoxia were increased significantly than those exposed to continuous hypoxia as well as normal control but GHRH decreased, there was no difference between continuous hypoxia and normal control. After 1 day, 3 days, and 7 days, there was no difference between continuous hypoxia and intermittent hypoxia. After 30 days, the plasmic level of CRH,ACTH and cortex ketone increased, GHRH decreased and GH had no obvious change.</p><p><b>CONCLUSION</b>The rats' HPA axis level increases and GHRH restrained with chronic intermittent hypoxia during sleep, feedback regulation disorders.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Pituitary-Adrenal System
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Sleep Apnea Syndromes
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Corticotropin-Releasing Hormone
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Growth Hormone
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Growth Hormone-Releasing Hormone
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Rats, Wistar
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Hypothalamo-Hypophyseal System
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Hypoxia
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Metabolism
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Applied Physiology
Year:
2005
Document type:
Article