Document Detail


Eicosapentanoic acid reduces the intimal thickening of autogenous vein grafts and enhances endothelium-derived relaxing factor.
MedLine Citation:
PMID:  8538176     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study examined the effect of purified eicosapentanoic acid (EPA) on intimal thickening of an autogenous vein graft. In addition, experiments were performed to determine whether EPA supplementation would alter the endothelium-dependent responses of the reversed vein graft. Segments of femoral veins were grafted into the femoral arteries of dogs. Six dogs received regular chow (control group) and six other dogs regular chow with 1500 mg/day 90.0% pure EPA (EPA group). At 6 weeks after surgery, the vein grafts were removed from the dogs, cut into rings, and suspended in organ chambers for isometric tension recording. In some rings, the endothelial cells were removed. When the rings taken from the control group were contracted with norepinephrine, adenosine diphosphate (ADP) and A23187 caused endothelium-dependent relaxations. In the EPA group, the endothelium-dependent responses to ADP were significantly augmented, while A23187 caused comparable endothelium-dependent relaxations. Direct relaxation in response to sodium nitroprusside was comparable between the two groups. Intimal thickening of the grafts in the control group (29.0 +/- 1.8 microns) was significantly (P < 0.05) greater than in the EPA group (12.5 +/- 1.8 microns). These results suggest that EPA enhances the release of endothelium-derived relaxing factor in autogenous vein grafts. This may be one of the effects of EPA in reducing the intimal thickening of autogenous vein grafts.
Authors:
K Komori; T Ishii; T Odashiro; H Itoh; K Mawatari; K Okadome; K Sugimachi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of surgical research     Volume:  59     ISSN:  0022-4804     ISO Abbreviation:  J. Surg. Res.     Publication Date:  1995 Dec 
Date Detail:
Created Date:  1996-02-08     Completed Date:  1996-02-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376340     Medline TA:  J Surg Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  747-53     Citation Subset:  IM    
Affiliation:
Second Department of Surgery, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Vessel Prosthesis*
Dogs
Eicosapentaenoic Acid / pharmacology*
Fatty Acids / blood
Lipids / blood
Nitric Oxide / metabolism*
Tunica Intima / drug effects*
Vasodilation
Veins / drug effects*,  pathology,  transplantation*
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Lipids; 10102-43-9/Nitric Oxide; 1553-41-9/Eicosapentaenoic Acid

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


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