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Expression profile of plasma microRNAs in premature infants with respiratory distress syndrome

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As well-known regulators of gene expression, microRNAs (miRNAs) are important not only in cell proliferation and differentiation, but also in tumorigenesis and organ development. It has been estimated that miRNAs may be responsible for regulating the expression of almost one third of the human genome. Simultaneously, with advances in neonatal care in the clinic, an increased number of premature infants are being saved and, thus, respiratory distress syndrome (RDS) has become more common. However, previous nonmiRNA studies have suggested their connection with RDS. In the present study, a miRNA microarray, including >1,891 capture probes was used to compared the expression profiles of plasma miRNAs between RDS and control groups. miRNAs, which were observed to have consistent foldchanges (foldchange ≥1.3) between the two groups were selected and validated using reverse transcriptionquantitative polymerase chain reaction. As a result, 171 differentially expressed miRNAs were identified, including two upregulated and seven downregulated miRNAs. Of these miRNAs, four were selected as having higher foldchanges between the two groups. This is the first time, to the best ouf our knowledge, that these nine miRNAs have been reported in RDS. It was hypothesized that these novel miRNAs may be important in RDS, and may provide meaningful biomarkers for the diagnosis of RDS.
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Document Type: Research Article

Affiliations: 1: Department of Neonatology, Nanjing Children's Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China 2: Department of Neonatology, Huaian Maternity and Child Health Care Hospital, Huaian, Jiangsu 223002, P.R. China

Publication date: August 1, 2015

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  • Molecular Medicine Reports is a monthly, peer-reviewed journal available in print and online, that includes studies devoted to molecular medicine, underscoring aspects including pharmacology, pathology, genetics, neurosciences, infectious diseases, molecular cardiology and molecular surgery. In vitro and in vivo studies of experimental model systems pertaining to the mechanisms of a variety of diseases offer researchers the necessary tools and knowledge with which to aid the diagnosis and treatment of human diseases.
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