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  • Title: Oral eicosapentaenoic acid supplementation as possible therapy for endometriosis.
    Author: Netsu S, Konno R, Odagiri K, Soma M, Fujiwara H, Suzuki M.
    Journal: Fertil Steril; 2008 Oct; 90(4 Suppl):1496-502. PubMed ID: 18054352.
    Abstract:
    OBJECTIVE: To investigate the anti-inflammatory effect of n-3 eicosapentaenoic acid (EPA) compared with n-6 linoleic acid (LA) in an endometriosis rat model. We focused on the relationship between lipid metabolism and inflammatory reactions in endometriosis based on the hypothesis that a lipid intake imbalance is one of the factors responsible for the recent increase of endometriosis. DESIGN: Prospective, randomized experimental study. SETTING: Animal surgery laboratory in a university hospital. ANIMAL(S): Sprague-Dawley rats (female, 6 weeks old). INTERVENTION(S): Rats were fed a diet with EPA (n = 9) or with LA (n = 9) for 2 weeks. Two weeks after feeding, the uterus was autotransplanted to the peritoneum to construct an endometriosis model. Feeding was continued for a total of 6 weeks. Two and 4 weeks after autotransplantation, three rats of each group were killed and evaluated. MAIN OUTCOME MEASURE(S): Endometriotic lesions were morphologically evaluated and their fatty acid composition was examined. Gene expression in these tissues was evaluated by cDNA microarray analysis and quantative real-time reverse transcriptase-polymerase chain reaction (RT-PCR). RESULT(S): In the EPA group, the n-3:n-6 ratio in each tissue significantly increased and the thickening of the interstitium, an active site for inflammation in endometriosis, was significantly suppressed (0.30 +/- 0.09 mm [EPA group] vs. 0.77 +/- 0.23 mm [LA group]). The mRNA of metalloproteinases, interleukin-1beta, interleukin-1r, prostaglandin E synthase (Ptges), and nuclear factor (NF)-kappaB were reduced in the EPA group. CONCLUSION(S): EPA supplementation might be a valid strategy for the treatment of endometriosis.
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