Document Detail


The effect of progesterone on prolactin stimulation of fatty acid synthesis, glycerolipid synthesis and lipogenic-enzyme activities in mammary glands of pseudopregnant rabbits, after explant culture or intraductal injection.
MedLine Citation:
PMID:  4062899     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The activities of lipogenic enzymes, such as acetyl-CoA carboxylase, fatty acid synthetase and glucose-6-phosphate dehydrogenase, and glycerolipid synthesis increased significantly in mammary explants of 11-day-pseudopregnant rabbits in response to prolactin, in the presence of near-physiological concentrations of insulin and corticosterone in culture. Increasing the concentration of progesterone in culture resulted in suppression of glycerolipid synthesis and activities of acetyl-CoA carboxylase and fatty acid synthetase, but not the pentose phosphate dehydrogenases. However, at near-physiological concentration of progesterone, only acetyl-CoA carboxylase activity was decreased. Injection of prolactin intraductally into 11-day-pseudopregnant rabbits stimulated glycerolipid synthesis, fatty acid synthesis and enzymes involved in fatty acid synthesis, after 3 days. Intraductal injection of progesterone separately or together with prolactin had no significant effect on basal or stimulated lipogenesis in mammary glands. Intramuscular injection of progesterone at 10 mg/day did not suppress fatty acid synthesis stimulated when prolactin was injected intraductally, but a significant inhibition was observed at a higher dose (80 mg/day).
Authors:
P Martyn; I R Falconer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Biochemical journal     Volume:  231     ISSN:  0264-6021     ISO Abbreviation:  Biochem. J.     Publication Date:  1985 Oct 
Date Detail:
Created Date:  1985-12-19     Completed Date:  1985-12-19     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  2984726R     Medline TA:  Biochem J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  321-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Culture Techniques
Fatty Acids / biosynthesis
Female
Glycerophosphates / metabolism
Lipids / biosynthesis*
Mammary Glands, Animal / drug effects,  enzymology,  metabolism*
Progesterone / administration & dosage,  pharmacology*
Prolactin / pharmacology*
Pseudopregnancy / metabolism
Rabbits
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Glycerophosphates; 0/Lipids; 57-83-0/Progesterone; 9002-62-4/Prolactin
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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