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  • Title: Association of umbilical cord blood miR-375 with neonatal respiratory distress syndrome and adverse neonatal outcomes in premature infants.
    Author: Deng Y, Zhang R, Jiang X.
    Journal: Acta Biochim Pol; 2022 Jun 28; 69(3):605-611. PubMed ID: 35763793.
    Abstract:
    BACKGROUND: Neonatal respiratory distress syndrome (NRDS) is a common respiratory disorder occurring in premature infants, and some microRNAs (miRNAs) have been demonstrated to play critical roles in NRDS progression. This study aimed to measure relative expression of miR-375 in infants with NRDS, and further evaluate the clinical significance of miR-375 in predicting the onset and clinical prognosis of NRDS in infants. METHODS: This study collected umbilical cord blood from 180 premature neonates, including 90 neonates with NRDS and 90 non-NRDS neonates. Quantitative real-time PCR was used to detect relative expression level of miR-375. The diagnostic value of miR-375 in screening NRDS neonates from control neonates and its predictive accuracy for clinical prognosis were evaluated by receiver operating characteristic analysis. The relationship of miR-475 with disease onset and clinical outcomes in NRDS infants was assessed by univariate and multivariate logistic regression analyses. RESULTS: Relative miR-375 expression was upregulated in NRDS neonates, and high levels of miR-375 were observed in NRDS grade III-IV cases compared to those early-stage neonates. miR-375 had relatively high diagnostic accuracy to screen NRDS neonates and was independently associated with NRDS onset in infants. Moreover, relative miR-375 expression was upregulated in NRDS neonates with poor prognosis and could independently predict the clinical outcomes of NRDS neonates with considerable predictive accuracy. CONCLUSION: Umbilical cord serum miR-375 is elevated and associated with NRDS onset and clinical outcomes in NRDS neonates. Thus, miR-375 may serve as a biomarker for the diagnosis and prognosis of infants with NRDS.
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