Dissemin is shutting down on January 1st, 2025

Published in

Karger Publishers, Neonatology, 2(106), p. 120-125, 2014

DOI: 10.1159/000362783

Links

Tools

Export citation

Search in Google Scholar

Placental Sprouty 2 <b><i>(SPRY2)</i></b>: Relation to Placental Growth and Maternal Metabolic Status

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

<b><i>Background:</i></b><i>SPROUTY2</i> (SPRY2) is a membrane-associated protein expressed by placental macrophages with regulatory roles in tissue growth and development. The <i>SPRY2</i> locus was shown to be associated with body fat distribution and susceptibility to type 2 diabetes. <b><i>Objectives:</i></b> We assessed whether <i>SPRY2</i> mRNA levels are related with maternal metabolic status and with placental weight. We also studied the association of placental mRNA of <i>SPRY2</i> with macrophage-derived inflammatory genes. <b><i>Methods:</i></b> A maternal metabolic profile [C-peptide, post-load glucose and high-molecular-weight (HMW) adiponectin] was assessed between 24 and 28 weeks of gestation in 200 control women delivering adequate-for-gestational-age (AGA) infants. Placentas and newborns were weighed at delivery. Placental mRNA levels of <i>SPRY2</i> and of macrophage-derived inflammatory genes <i>MMP2, TNFα </i>and <i>CD163</i> were quantified by real-time PCR. Women delivering small-for-gestational-age infants (SGA, n = 25) and women with gestational diabetes (GDM, n = 25) were also studied as validation groups for placental growth. <b><i>Results:</i></b> In control women delivering AGA infants, placental <i>SPRY2 </i>mRNA levels showed positive associations with a more adverse maternal metabolic status (higher maternal C-peptide and post-load glucose and lower HMW adiponectin), with more placental weight and with a more placental inflammatory phenotype (higher placental mRNA levels of <i>MMP2,</i><i>TNFα </i>and <i>CD163</i>) (all p < 0.05 to p = 0.001). Compared to AGA infants, placental weight and placental <i>SPRY2 </i>mRNA levels were lower in placentas from SGA infants and higher in placentas from women with GDM (all p < 0.0001). <b><i>Conclusions:</i></b> Our results suggest a link between placental <i>SPRY2</i> mRNA levels and placental growth, which may be modulated by maternal metabolic status and placental inflammation.