ArticleZhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics2018
[Dynamic expression and role of SUMO-modified C/EBPα in preterm rats with bronchopulmonary dysplasisa induced by hyperoxia exposure].
Article in Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 4 citations in OpenAlex.
- Epigenetic modifications in the development of bronchopulmonary dysplasia: a review.Pediatric research · 2024Review
- Regulation of ACE-2 enzyme by hyperoxia in lung epithelial cells by post-translational modification.Journal of lung, pulmonary & respiratory research · 2021Article
- An Innovative Model of Bronchopulmonary Dysplasia in Premature Infants.Frontiers in pediatrics · 2020Article
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7 authors at 1 institution in 1 country.
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Abstract
objectiveTo study the expression of SUMO-modified CCAAT enhancer binding protein α (C/EBPα) in preterm rat model of bronchopulmonary dysplasisa (BPD) induced by hyperoxia exposure and its role.
methodsEighteen preterm rats were randomly divided into an air group and a hyperoxia group (n=9 each). The model of BPD was prepared in preterm rats exposed to hyperoxia. The rats from the two groups were sacrificed on postnatal days 4, 7 and 14 respectively (3 rats at each time) and lung tissues were harvested. Periodic acid-Schiff (PAS) staining was used to observe the differentiation of rat lung tissues. Ki67 expression was detected by immunohistochemistry. Western blot was used to measure the protein expression of small ubiquitin-related modifier-1(SUMO1) and C/EBPα. A co-immunoprecipitation assay was performed to measure the protein expression of SUMO-modified C/EBPα.
resultsCompared with the air group, the hyperoxia group showed a decreased glycogen content in the lung tissue on postnatal day 4, and an increased content on postnatal days 7 and 14. Over the time of hyperoxia exposure, the hyperoxia group showed an increased expression of Ki67 in the lung tissue compared with the air group at all time points. Compared with the air group, the protein expression of C/EBPα increased on postnatal day 4 and decreased on postnatal days 7 and 14 in the hyperoxia group (P<0.05). The hyperoxia group had significantly upregulated expression of SUMO1 and SUMO-modified C/EBPα compared with the air group at all time points (P<0.05). In the hyperoxia group, the protein expression of SUMO-modified C/EBPα was positively correlated with the glycogen content (r=0.529, P<0.05) and the expression of Ki67 (r=0.671, P<0.05).
conclusionsHyperoxia may induce over-proliferation and differentiation disorders of alveolar epithelial cells in preterm rat model of BPD, possibly through an increased expression of SUMO-modified C/EBP&alpha.
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29764579PMC7389059W2991178576What OpenQuestion holds
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