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Lysophosphatidic acid increases the production of pivotal mediators of decidualization and vascularization in the rat uterus.

Abstract：

INTRODUCTION:The decidual reaction and the formation of new vessels in the uterus are two crucial processes during embryo implantation. Previously, we observed that lysophosphatidic acid (LPA) increases cyclooxygenase-2 derived - prostaglandin E2 production during implantation in the rat uterus and that it augments the expression of decidualization (IGFBP-1) and vascularization (IL-10) markers. Both cyclooxygenase and nitric oxide synthase (NOS) are known enzymes involved in these processes. Thus, we became interested in studying which factors contribute to LPA receptor-specific role during the decidual and the vascular reaction at implantation. METHODS:We adopted a pharmacological approach in vitro incubating the uterus from rats on day 5 of gestation (day of implantation) with LPA, DGPP (a highly selective antagonist of LPA3, an LPA receptor) and cyclooxygenase and NOS selective and non-selective inhibitors. We determined NOS activity, prostaglandin E2 production and IGFBP-1 and IL-10 expression to evaluate decidualization and vascularization. RESULTS:We observed that LPA augmented the activity of the inducible NOS isoform through LPA1/LPA3. Inducible NOS activity participated in the induction of cyclooxygenase-2/prostaglandin E2 increase stimulated by LPA. Also, cyclooxygenase-2 derived prostaglandins mediated LPA-stimulatory action on NOS activity. Both cyclooxygenase-2 and inducible NOS mediated LPA effect on IGFBP-1 and IL-10 expression. CONCLUSIONS:These results suggest the participation of LPA/LPA3 in the production of crucial molecules involved in vascularization and decidualization, two main processes that prepare the uterine milieu for embryo invasion during implantation.

journal_name

Placenta

journal_title

Placenta

authors

Beltrame JS,Sordelli MS,Cella M,Perez Martinez S,Franchi AM,Ribeiro ML

doi

10.1016/j.placenta.2013.06.001

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

751-6

issue

9

eissn

0143-4004

issn

1532-3102

pii

S0143-4004(13)00254-3

journal_volume

34

pub_type

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