期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/ijms22179500
关键词
congenital diaphragmatic hernia; oxidative stress; platelet-derived growth factor
资金
- Japan Society for the Promotion of Science (JSPS) KAKENHI [17K11227, 17K11230]
- Grants-in-Aid for Scientific Research [17K11227, 17K11230] Funding Source: KAKEN
The study demonstrated that molecular hydrogen (H-2) as an antioxidant can improve respiratory function in CDH rat models by attenuating lung morphology and pulmonary artery thickening, enhancing alveolarization and pulmonary artery remodeling.
Oxidative stress plays a pathological role in pulmonary hypoplasia and pulmonary hypertension in congenital diaphragmatic hernia (CDH). This study investigated the effect of molecular hydrogen (H-2), an antioxidant, on CDH pathology induced by nitrofen. Sprague-Dawley rats were divided into three groups: control, CDH, and CDH + hydrogen-rich water (HW). Pregnant dams of CDH + HW pups were orally administered HW from embryonic day 10 until parturition. Gasometric evaluation and histological, immunohistochemical, and real-time polymerase chain reaction analyses were performed. Gasometric results (pH, pO(2,) and pCO(2) levels) were better in the CDH + HW group than in the CDH group. The CDH + HW group showed amelioration of alveolarization and pulmonary artery remodeling compared with the CDH group. Oxidative stress (8-hydroxy-2 '-deoxyguanosine-positive-cell score) in the pulmonary arteries and mRNA levels of protein-containing pulmonary surfactant that protects against pulmonary collapse (surfactant protein A) were significantly attenuated in the CDH + HW group compared with the CDH group. Overall, prenatal H-2 administration improved respiratory function by attenuating lung morphology and pulmonary artery thickening in CDH rat models. Thus, H-2 administration in pregnant women with diagnosed fetal CDH might be a novel antenatal intervention strategy to reduce newborn mortality due to CDH.
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