Document Detail


Urinary bladder membrane permeability differentially induced by membrane lipid composition.
MedLine Citation:
PMID:  19412731     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The permeability barrier of the urothelium (covering the mammalian urinary tract) has stimulated interest in the role of the luminal membrane in the barrier function. To know how membrane lipids may affect the permeability barrier we prepare endocytic vesicles of different lipid composition entrapping a fluorescent dye (HPTS) and its quencher (DPX) using a dietary strategy (rats fed with commercial, oleic acid- or linoleic acid-enriched diets) followed by endocytosis induction. Vesicular leakage was measured by a fluorescence requenching technique. The results showed (1) endocytosed vesicles can release their content; (2) a linoleic acid-rich diet did not change either the mechanism of leakage or the amount of released material relative to the control; and (3) a oleic acid-rich diet greatly affected the mechanism of release. Thus, the dietary fatty acids can modify the urothelial cell physiology altering the pathway of endocytosed urinary fluid.
Authors:
Ernesto Javier Grasso; Reyna Olga Calderón
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-05-03
Journal Detail:
Title:  Molecular and cellular biochemistry     Volume:  330     ISSN:  1573-4919     ISO Abbreviation:  Mol. Cell. Biochem.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-12-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0364456     Medline TA:  Mol Cell Biochem     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  163-9     Citation Subset:  IM    
Affiliation:
Primera Cátedra de Biología Celular, H. y E., Instituto de Biología Celular-Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, CC220, Ciudad Universitaria, CP5000, Córdoba, Argentina. ejgrasso@hotmail.com
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