Document Detail


Experimental conditions affecting in vitro intestinal incorporation of palmitic acid: a methodological approach.
MedLine Citation:
PMID:  8000037     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In the rat, a large number of in vitro studies on intestinal fatty acid uptake have been carried out. However, the results obtained under different experimental conditions are often contradictory. The present work is a critical approach to the experimental aspects which may modify in vitro intestinal uptake of fatty acids. Different kinds of intestinal tissue samples (intact, everted or opened rings) were used. The histological changes and the uptake of palmitic acid were measured for each type of sample under different stirring rates, at different incubation times and with micellar solutions of varying composition. It is concluded that 1) opened rings have the highest absorptive capacity with the lowest dispersion; 2) incubation periods longer than 30 minutes do not result in additional palmitic acid uptake and may lead to severe tissue hypoxia as indicated by extensive vacuolization; 3) stirring rates over 1 cycle/sec do not result in increased PA uptake and cause extensive mucosal disruption, particularly in jejunal samples.
Authors:
X Casanovas; X Manteca; E Fernández; E Goñalons
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Archives internationales de physiologie, de biochimie et de biophysique     Volume:  102     ISSN:  0778-3124     ISO Abbreviation:  Arch Int Physiol Biochim Biophys     Publication Date:    1994 May-Jun
Date Detail:
Created Date:  1995-01-26     Completed Date:  1995-01-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9111069     Medline TA:  Arch Int Physiol Biochim Biophys     Country:  BELGIUM    
Other Details:
Languages:  eng     Pagination:  163-6     Citation Subset:  IM    
Affiliation:
Unit of Physiology, Veterinary Faculty, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Ileum / anatomy & histology,  metabolism
Intestinal Mucosa / anatomy & histology,  metabolism
Intestines / anatomy & histology,  metabolism*
Jejunum / anatomy & histology,  metabolism
Kinetics
Micelles
Palmitic Acid
Palmitic Acids / metabolism*
Rats
Chemical
Reg. No./Substance:
0/Micelles; 0/Palmitic Acids; 57-10-3/Palmitic Acid

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


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