4.6 Article

Placental Inflammation Significantly Correlates with Reduced Risk for Retinopathy of Prematurity

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AMERICAN JOURNAL OF PATHOLOGY
卷 193, 期 11, 页码 1776-1788

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ELSEVIER SCIENCE INC
DOI: 10.1016/j.ajpath.2023.02.003

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This study identifies a protective association between acute placental inflammation and the development of retinopathy of prematurity (ROP) in preterm infants. It also identifies novel mechanisms that may contribute to this protective association. These findings provide new insights into the postnatal risk associations in preterm infants.
Retinopathy of prematurity (ROP), a blinding condition affecting preterm infants, is an interruption of retinal vascular maturation that is incomplete when born preterm. Although ROP demonstrates delayed onset following preterm birth, representing a window for therapeutic intervention, there are no curative or preventative measures available for this condition. The in utero environment, including placental function, is increasingly recognized for contributions to preterm infant disease risk. The current study identified a protective association between acute placental inflammation and preterm infant ROP development using logistic regression, with the most significant association found for infants without gestational exposure to maternal preeclampsia and those with earlier preterm birth. Expression analysis of proteins with described ROP risk associations demonstrated significantly decreased placental high temperature requirement A serine peptidase-1 (HTRA-1) and fatty acid binding protein 4 protein expression in infants with acute placental inflammation compared with those without. Within the postnatal peripheral circulation, HTRA-1 and vascular endothelial growth factor-A demonstrated inverse longitudinal trends for infants born in the presence of, compared with absence of, acute placental inflammation. An agnostic approach, including whole transcriptome and differential methylation placental analysis, further identify novel mediators and pathways that may underly protection. Taken together, these data build on emerging literature showing a protective association between acute placental inflammation and ROP development and identify novel mechanisms that may inform postnatal risk associations in preterm infants.

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