Document Detail

Modulation of paraoxonase 1 and 3 expression after moderate exercise training in the rat.
MedLine Citation:
PMID:  19091700     Owner:  NLM     Status:  MEDLINE    
Paraoxonases (PONs) are a small family of antioxidant enzymes whose antiatherogenic activity is well known. The aim of the present study was the evaluation of the effects of moderate aerobic training on their expression using a rat model. In order to discriminate between PON1 and PON3 enzymatic activity, we took advantage of some differences in their substrate preferences. PON1 and PON3 enzymatic activities and their protein levels were analyzed in plasma and in liver microsomes, and their mRNA levels in the liver. Exercise training did not affect PON1 expression or enzymatic activity but increased PON3 mRNA, protein levels, and enzymatic activity. Training also induced variations in plasma membrane composition, including an increase in polyunsaturated and a decrease in mono- and di-unsaturated fatty acids. On the other hand, acute exercise inhibited PON activities while increasing PON3 protein content in liver microsomes and reversing the relative composition in mono-, di-, and poly-unsaturated fatty acids, suggesting that physical stress, by altering membrane composition, may impair PON release from liver membranes. In conclusion, we documented, for the first time, the presence of PON3 in rat serum and, notably, found that the upregulation of PON3, rather than PON1, appears to be associated with physical training.
Rita Romani; Gianna Evelina De Medio; Simona di Tullio; Rosa Lapalombella; Irene Pirisinu; Vittoria Margonato; Arsenio Veicsteinas; Marina Marini; Gabriella Rosi
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-12-16
Journal Detail:
Title:  Journal of lipid research     Volume:  50     ISSN:  0022-2275     ISO Abbreviation:  J. Lipid Res.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2010-08-17     Completed Date:  2010-11-23     Revised Date:  2013-06-04    
Medline Journal Info:
Nlm Unique ID:  0376606     Medline TA:  J Lipid Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2036-45     Citation Subset:  IM    
Department of Experimental Medicine, University of Perugia, Via del Giochetto, Perugia, Italy.
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MeSH Terms
Aryldialkylphosphatase / genetics,  metabolism*
Blotting, Western
Electrophoresis, Polyacrylamide Gel
Microsomes, Liver / metabolism
Motor Activity / genetics,  physiology*
Phospholipids / metabolism
Polymerase Chain Reaction
Random Allocation
Rats, Sprague-Dawley
Reg. No./Substance:
0/Phospholipids; EC

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