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A Murine Model of Fetal Exposure to Maternal Inflammation to Study the Effects of Acute Chorioamnionitis on Newborn Intestinal Development
08:50

A Murine Model of Fetal Exposure to Maternal Inflammation to Study the Effects of Acute Chorioamnionitis on Newborn Intestinal Development

Published on: June 24, 2020

Prenatal inflammation and lung development

Boris W Kramer1, Suhas Kallapur, John Newnham

  • 1Department of kindergeneeskunde, Academisch ziekenhuis Maastricht, Postbus 5800, 6202 AZ Maastricht, The Netherlands.

Seminars in Fetal & Neonatal Medicine
|October 11, 2008
PubMed

Insights

Prenatal inflammation, like chorioamnionitis, can alter fetal lung development and immune responses. This exposure may impact the risk of respiratory distress syndrome (RDS) and bronchopulmonary dysplasia (BPD) in infants.

Area of Science:

  • Neonatal immunology
  • Fetal lung development
  • Perinatal medicine

Background:

  • Chronic chorioamnionitis, often involving mycoplasma and ureaplasma, frequently affects very low birth weight infants.
  • The link between chorioamnionitis and respiratory outcomes like respiratory distress syndrome (RDS) and bronchopulmonary dysplasia (BPD) is inconsistent.
  • Current diagnostic methods for chorioamnionitis and neonatal lung diseases lack precision, confounding established correlations.

Purpose of the Study:

  • To investigate the impact of prenatal inflammation on fetal lung development and immune system modulation.
  • To explore the relationship between prenatal chorioamnionitis and the risk of postnatal lung diseases in infants.
  • To understand how prenatal inflammatory exposures influence the maturation and function of fetal immune cells.

Main Methods:

  • Review of existing literature on chorioamnionitis and its effects on fetal lung development.
  • Analysis of animal models demonstrating the effects of pro-inflammatory mediators and ureaplasma on fetal lung maturation and injury.
  • Examination of studies involving intra-amniotic endotoxin administration to assess modulation of the fetal innate immune system.

Main Results:

  • Animal models show prenatal inflammation can induce lung maturation but also cause alveolar simplification and vascular injury.
  • Intra-amniotic endotoxin exposure can mature monocytes into alveolar macrophages.
  • Prenatal inflammation can lead to either induction or paralysis of inflammatory responses in the fetal immune system, depending on exposure history.

Conclusions:

  • Prenatal inflammation significantly affects fetal lung development and subsequent immune responses.
  • The precise impact of prenatal inflammation on neonatal respiratory health requires further investigation due to diagnostic limitations.
  • Understanding these prenatal effects is crucial for developing strategies to mitigate lung disease in high-risk infants.

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