What question did this study set out to answer?

This research aims to explore the role of sex chromosome dosage in neonatal hyperoxic lung injury and its effect on alveolar structure.

B17-02 Sex as a Biological Variable in Neonatal Hyperoxic Lung Injury: The Role of Sex Chromosome Dosage

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Randomized trial investigates sex chromosome dosage's impact on lung injury in neonatal mice, suggesting therapeutic insights.

This research aims to explore the role of sex chromosome dosage in neonatal hyperoxic lung injury and its effect on alveolar structure.
Utilized the XY* mouse model with XX, XO, XY, and XXY genotypes
Exposed mice to hyperoxia or room air and analyzed outcomes at two time points (PND 7 and PND 21)
Conducted bulk RNA sequencing to identify differentially expressed genes and pathways in response to hyperoxia.
Mice with two X chromosomes exhibited the highest number of differentially expressed genes (308) in response to hyperoxia.
Presence of a Y chromosome correlated with worse alveolar structures after injury (P = 0.0171).
Identified 78 common biological pathways modulated under hyperoxia, impacting immune response and cell cycle.

Albert et al. (2026) studied this question.

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