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Abstract Title:

Omega-3 fatty acids and decidual cell prostaglandin production in response to the inflammatory cytokine IL-1beta.

Abstract Source:

Am J Obstet Gynecol. 2006 Dec;195(6):1693-9. Epub 2006 Jun 21. PMID: 16792994

Abstract Author(s):

Ashley S Roman, Jeremy Schreher, Andrew P Mackenzie, Peter W Nathanielsz

Abstract:

OBJECTIVE: The objective of this study was to determine the effect of omega-3 fatty acids (eicosapentaenoic acid [EPA]; docosahexaenoic acid [DHA]) on prostaglandin production and prostanoid enzyme expression in cultured decidual cells exposed to interleukin-1beta (IL-1beta), a cytokine that plays a major role in inflammation. STUDY DESIGN: Decidua was obtained from human placentas of nonlaboring patients at term cesarean delivery (N = 6) and cultured by using standard cell culture techniques. Cells were preincubated in defined media with various concentrations of vehicle, DHA, or EPA for 1 hour. IL-1beta (10 ng/mL) was then added to the media, and experiments were terminated 12 hours after exposure to IL-1beta. Prostaglandin E2 (PGE2) and PGF2alpha concentrations in conditioned media were measured by enzyme-linked immunosorbent assay; cyclooxygenase-1 (COX-1), COX-2, microsomal prostaglandin E synthase (mPGES)-1, mPGES-2, and 15-hydroxy prostaglandin dehydrogenase (PGDH) expression were quantified by real-time polymerase chain reaction and immunoblotting. Groups were compared with the use of Student t test, with significance defined as P < .05. RESULTS: Preincubation with DHA decreased prostaglandin production by up to 80% when compared with controls. DHA decreased both mPGES-1 and -2 messenger RNA expression by approximately 50% (P = .02). Preincubation in DHA or EPA had no effect on COX-1, COX-2, and PGDH messenger RNA or protein expression. CONCLUSION: Under conditions simulating inflammation, supplementation with omega-3 fatty acids decreases PGE2 and PGF2alpha production in cultured decidual cells. The reduction in prostaglandin production was associated with a decreased expression of mPGES-1 and -2. These findings suggest a mechanism by which omega-3 fatty acid supplementation decreases the incidence of preterm birth in high-risk patients.

Study Type : Human Study

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Sayer Ji
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