Decidual Cox2 inhibition improves fetal and maternal outcomes in a

Centre de recherche
Decidual Cox2 inhibition improves fetal and maternal
outcomes in a preeclampsia-like mouse model
Jenny L. Sones,1,2 Jeeyeon Cha,3 Ashley K. Woods,1 Amanda Bartos,3 Christa Y. Heyward,1 Heinrich E. Lob,1 Catherine E.
Isroff,1 Scott D. Butler,1 Stephanie E. Shapiro,1 Sudhansu K. Dey,3 and Robin L. Davisson1,4
1Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA. 2Veterinary Clinical
Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA. 3Division of
Reproductive Sciences, Cincinnati Children’s Research Foundation, Cincinnati, Ohio, USA. 4Cell and Developmental
Biology, Weill Cornell Medical College, New York, New York, USA.
-------------------------------------------------------------------------------Preeclampsia (PE) is a disorder of pregnancy that manifests as late gestational maternal hypertension and
proteinuria and can be life-threatening to both the mother and baby. It is believed that abnormal
placentation is responsible for the cascade of events leading to the maternal syndrome. Embryo
implantation is critical to establishing a healthy pregnancy. Defective implantation can cause adverse
“ripple effects,” leading to abnormal decidualization and placentation, retarded fetal development, and
poor pregnancy outcomes, such as PE and fetal growth restriction. The precise mechanism(s) of
implantation defects that lead to PE remain elusive. BPH/5 mice, which spontaneously develop the
cardinal features of PE, show peri-implantation defects including upregulation of Cox2 and IL-15 at the
maternal-fetal interface. This was associated with decreased decidual natural killer (dNK) cells, which
have important roles in establishing placental perfusion. Interestingly, a single administration of a Cox2
inhibitor (celecoxib) during decidualization restrained Cox2 and IL-15 expression, restored dNK cell
numbers, improved fetal growth, and attenuated late gestational hypertension in BPH/5 female mice. This
study provides evidence that decidual overexpression of Cox2 and IL-15 may trigger the adverse
pregnancy outcomes reflected in the preeclamptic syndrome, underscoring the idea that Cox2 inhibitor
treatment is an effective strategy for the prevention of PE-associated fetal and maternal morbidity and
mortality.
insight.jci.org doi:10.1172/jci.insight.75351
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