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- W3102316807 abstract "Abstract Background Hyperoxia at resuscitation increases oxidative stress, and even brief exposure to high oxygen concentrations during stabilization may trigger organ injury with adverse long-term outcomes in premature infants. We studied the long-term effects of short-term perinatal oxygen exposure on cell cycle gene expression and lung growth in adult mice. Methods We randomized mice litters at birth to 21, 40, or 100%O 2 for 30 min and recovered in room air for 4 or 12 weeks. Cell cycle gene expression, protein analysis, and lung morphometry were assessed at 4 and 12 weeks. Results The principal component analysis demonstrated a high degree of correlation for cell cycle gene expression among the three oxygen groups. Lung elastin was significantly lower in the 100%O 2 groups at 4 weeks. On lung morphometry, radial alveolar count, alveolar number, and septal count were similar. However, the mean linear intercept (MLI) and septal length significantly correlated among the oxygen groups. The MLI was markedly higher in the 100%O 2 groups at 4 and 12 weeks of age, and the septal length was significantly lower in the 100%O 2 groups at 12 weeks. Conclusion Short-term exposure to high oxygen concentrations lead to subtle changes in lung development that may affect alveolarization. The changes are related explicitly to secondary crest formation that may result in alteration in lung elastin. Resuscitation with high oxygen concentrations may have a significant impact on lung development and long-term outcomes such as BPD in premature infants." @default.
- W3102316807 created "2020-11-23" @default.
- W3102316807 creator A5018068490 @default.
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- W3102316807 date "2020-11-10" @default.
- W3102316807 modified "2023-10-13" @default.
- W3102316807 title "Short-term perinatal oxygen exposure may impair lung development in adult mice" @default.
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- W3102316807 doi "https://doi.org/10.1186/s40659-020-00318-y" @default.
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