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Essential fatty acids influence survival in sepsis
J A Johnson1, J A Griswold, F F Muakkassa
1Department of Surgery, University of Mississippi Medical Center, Jackson 39216-4505.
The Journal of Trauma
|July 1, 1993
Summary
Omega-3 fatty acids improve survival in sepsis models. Supplementation with omega-3s, unlike omega-6s, protected rats against mortality from peritonitis, highlighting their anti-inflammatory benefits.
Area of Science:
- Biochemistry
- Immunology
- Nutrition Science
Background:
- Arachidonic acid metabolites (omega-6) promote sepsis mortality.
- Eicosapentaenoic acid metabolites (omega-3) are weaker inflammatory mediators.
- Dietary n-6 restriction or n-3 supplementation can reduce n-6 metabolite production.
Purpose of the Study:
- To investigate the impact of omega-3 (n-3) and omega-6 (n-6) fatty acids on survival rates in a rat model of sepsis.
- To determine if dietary n-3 supplementation or n-6 restriction influences sepsis outcomes.
Main Methods:
- Male Sprague-Dawley rats were fed either standard chow or essential-fatty-acid-deficient chow.
- Rats received daily gavage of fish oil (n-3), linoleic acid (n-6), or saline for two weeks.
- Sepsis was induced via cecal ligation and puncture (CLP); survival was monitored for 7 days.
Main Results:
- Survival was significantly reduced in CLP rats receiving n-6 fatty acids or saline.
- Rats supplemented with omega-3 fatty acids (fish oil) showed significantly improved survival after CLP.
- Omega-3 fatty acids, as sole essential fatty acids or as a supplement, enhanced survival in this peritonitis model.
Conclusions:
- Omega-3 fatty acids confer a survival advantage in a rodent model of sepsis.
- Dietary modulation of essential fatty acids can impact sepsis outcomes.
- Findings suggest a therapeutic potential for omega-3 fatty acids in managing sepsis.