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Y It Matters-Sex Differences in Fetal Lung Development

Mandy Laube1, Ulrich H Thome1

  • 1Department of Pediatrics, Division of Neonatology, University of Leipzig, 04103 Leipzig, Germany.

Biomolecules
|March 25, 2022
PubMed

Insights

This review explores sex-specific differences in preterm infant lung development and respiratory distress. It highlights how sex impacts alveolar epithelial function, steroid metabolism, and lung maturation, influencing pulmonary outcomes.

Area of Science:

  • Neonatal Medicine
  • Pulmonary Biology
  • Developmental Biology

Background:

  • Preterm birth presents significant challenges for neonatal respiratory adaptation.
  • Sex-specific differences in pulmonary morbidity are observed in human preterm infants.
  • Understanding these differences is crucial for improving respiratory outcomes.

Purpose of the Study:

  • To review sex-specific differences in alveolar epithelial functions in preterm infants.
  • To explore potential sex-specific causes of pulmonary complications, including steroid hormone pathways.
  • To examine the role of alveolar epithelial sodium transport in perinatal lung transition and sex differences.

Main Methods:

  • Review of existing literature on fetal lung development and perinatal transition.
  • Analysis of clinical observations regarding sex-specific pulmonary morbidity in preterm infants.
  • Discussion of molecular mechanisms, including pulmonary steroid receptors and metabolism.

Main Results:

  • Clinical data indicate sex-specific variations in pulmonary morbidity among preterm infants.
  • Pulmonary steroid receptors and local lung steroid metabolism show sex-specific patterns during development.
  • Alveolar epithelial sodium transport exhibits sex differences, impacting lung transition.

Conclusions:

  • Sex-specific factors significantly influence lung development and maturation in preterm infants.
  • Steroid metabolism and alveolar epithelial function are key areas where sex differences manifest.
  • Further research into these sex-specific mechanisms can guide targeted interventions for respiratory distress in preterm neonates.

Keywords:
epithelial Na+ transportfetal lung developmentpreterm infantsrespiratory distresssex differences

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