Document Detail


Dietary fat type and ambient oxygen tension influence pulmonary prostaglandin synthetic potential.
MedLine Citation:
PMID:  715063     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Chronic hyperoxia produces pathological changes in lung which can be fatal. With an interest in delineating dietary factors which might affect the pulmonary response to hyperoxia, we fed rats a semi-synthetic diet containing polyunsaturated fatty acids (PUFA) as either 5% or 78% of the fat complement. The rats were exposed to pure oxygen at one atmosphere. Half the animals in each diet group were injected with aspirin during the hyperoxic exposure. Radioimmunoassay of lung prostaglandins (PG) F2alpha, E2 and E1 were performed at 0, 24, 48 and 72 hours. The major findings were: (1) Feeding the high PUFA diet elevated lung PG synthetic potential tenfold over that of low PUFA-fed animals. There was no effect of diet on mortality. (2) Hyperoxia significantly increased F2alpha-synthetic potential during the first 24 hours of hyperoxia and moderately increased the synthetic potential of E2 and E1. (3) Aspirin significantly depressed synthetic potential of all three PG prior to oxygen exposure but its effect was overcome during hyperoxia. Aspirin-injected rats showed 80% mortality in oxygen vs. 50% for saline controls.
Authors:
S N Meydani; M M Mathias; C L Schatte
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Prostaglandins and medicine     Volume:  1     ISSN:  0161-4630     ISO Abbreviation:  Prostaglandins Med     Publication Date:  1978 Sep 
Date Detail:
Created Date:  1979-01-26     Completed Date:  1979-01-26     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7810330     Medline TA:  Prostaglandins Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  241-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Aspirin / pharmacology
Dietary Fats / pharmacology*
Fatty Acids, Unsaturated / pharmacology
Lung / drug effects,  metabolism*
Oxygen / pharmacology*
Prostaglandins / biosynthesis*
Prostaglandins E / biosynthesis
Prostaglandins F / biosynthesis
Rats
Chemical
Reg. No./Substance:
0/Dietary Fats; 0/Fatty Acids, Unsaturated; 0/Prostaglandins; 0/Prostaglandins E; 0/Prostaglandins F; 50-78-2/Aspirin; 7782-44-7/Oxygen

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


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