Document Detail


Possible actions of corticotropin-releasing hormone in regulating porcine corpus luteum function.
MedLine Citation:
PMID:  20431270     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The objective of the present study was to determine whether corticotropin-releasing hormone (CRH) influences porcine corpus luteum function. The gene expressions of CRH receptors (CRH-R) were determined in the CLs of Chinese Meishan pigs during the estrous cycle. The effects of CRH on progesterone (P), estradiol-17β (E) and prostaglandin (PG) F(2α) secretion by cultured luteal cells were also investigated. Messenger RNAs of the CRH-R were clearly expressed in the CL throughout the estrous cycle, and the mRNA level was higher at the regressed stage than at the other stages (P<0.05). When the cultured luteal cells obtained from the mid-luteal stage CL (days 8-11) were exposed to CRH (50-5000 ng/ml), P secretion by the cells was significantly reduced at the highest dose (P<0.05), whereas CRH had no effect on E and PGF(2α) secretion by the cells. The overall results suggest that CRH inhibits local P production from luteal cells via its specific CRH-R, implying that CRH plays some roles in regulating porcine CL function during the estrous cycle, especially in the period of luteolysis.
Authors:
Ryosuke Sakumoto; Shuichi Ito; Tokushi Komatsu
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-23
Journal Detail:
Title:  The Journal of veterinary medical science / the Japanese Society of Veterinary Science     Volume:  72     ISSN:  0916-7250     ISO Abbreviation:  J. Vet. Med. Sci.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-10-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9105360     Medline TA:  J Vet Med Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  1173-7     Citation Subset:  IM    
Affiliation:
Reproductive Biology Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan. sakumoto@affrc.go.jp
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