Document Detail


Bile is essential for lipid assimilation in Leach's storm petrel, Oceanodroma leucorhoa.
MedLine Citation:
PMID:  1510178     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A tritium-labeled glycerol triether was tested as a non-absorbable lipid marker for studies of neutral lipid absorption in normal and cholestryamine-induced steatorrhic chicks of Leach's storm petrel (Oceanodroma leucorhoa). Absorption of triacylglycerol and wax ester (96 +/- 4.2 and 94 +/- 2.1%, respectively) in normal chicks was indistinguishable. Absorption of neutral lipids decreased with increasing quantities of resin, and with the highest dosage (14% wt/wt) less than 30% of dietary lipids were assimilated. The concentration of bile salts (greater than 500 mM) in the gallbladder of Leach's storm petrel is among the highest recorded. The bile salts are predominantly taurine conjugates of chenodeoxycholate and cholate. Biliary cholesterol levels are within the range observed in humans although biliary phospholipid levels are lower and triglyceride levels are higher. Extensive retrograde movement of duodenal contents and biliary secretions to the gizzard and proventriculus were found. Although similarities in fat and bile salt assimilation exist between seabirds and mammals, there do exist differences that make non-polar lipid assimilation (i.e., wax esters) more efficient in seabirds.
Authors:
A R Place
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  The American journal of physiology     Volume:  263     ISSN:  0002-9513     ISO Abbreviation:  Am. J. Physiol.     Publication Date:  1992 Aug 
Date Detail:
Created Date:  1992-09-22     Completed Date:  1992-09-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370511     Medline TA:  Am J Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  R389-99     Citation Subset:  IM    
Affiliation:
Center of Marine Biotechnology, University of Maryland, Baltimore 21202.
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MeSH Terms
Descriptor/Qualifier:
Absorption
Animals
Animals, Newborn
Bile / chemistry,  physiology*
Bile Acids and Salts / analysis
Biological Markers
Birds / anatomy & histology,  physiology*
Celiac Disease / metabolism
Eating
Esters
Feces / chemistry
Gastrointestinal Contents / chemistry
Lipid Metabolism*
Oils / chemistry
Oleic Acid
Oleic Acids / analysis
Rats
Waxes
Chemical
Reg. No./Substance:
0/Bile Acids and Salts; 0/Biological Markers; 0/Esters; 0/Oils; 0/Oleic Acids; 0/Waxes; 112-80-1/Oleic Acid

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


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