Circulating microRNA expression in children with idiopathic short stature / 中国当代儿科杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the role of circulating microRNAs (miRNA) in the pathogenesis of idiopathic short stature (ISS) through detecting miRNA expression profile in plasma of children with ISS.</p><p><b>METHODS</b>Plasma miRNA expression was determined by microarray in 20 children with ISS and 20 healthy children. Altered microRNAs were verified by real-time PCR. The online miRNA target gene prediction software was used to predict and screen miRNA differentially expressed target genes.</p><p><b>RESULTS</b>According to the microarray, there were 40 differentially expressed miRNAs in the ISS group compared with the control group, including 24 up-regulated miRNAs and 16 down-regulated miRNAs. Real-time PCR verified two up-regulated (miR-185and miR-574-5p) and two down-regulated miRNAs (miR-497and miR-15a) and confirmed that plasma miR-185 expression was significantly up-regulated (P<0.05) and miR-497 expression was significantly down-regulated (P<0.05) in children with ISS.</p><p><b>CONCLUSIONS</b>Plasma miRNA expression levels in children with ISS are significantly different from healthy controls, suggesting that plasma miRNA is associated with the pathogenesis of ISS.</p>