Circulating miR-30a, miR-195 and let-7b associated with acute myocardial infarction.
Circulating miR-30a, miR-195 and let-7b associated with acute myocardial infarction.
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循环 miR-30a、miR-195 和 let-7b 与急性心肌梗死相关
DOI：
10.1371/journal.pone.0050926
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Wang DW
中科院分区：
文献类型：
--
作者：
Long G;Wang F;Duan Q;Yang S;Chen F;Gong W;Yang X;Wang Y;Chen C;Wang DW
Background MicroRNAs (miRNAs) play key roles in diverse biological and pathological processes, including the regulation of proliferation, apoptosis, angiogenesis and cellular differentiation. Recently, circulating miRNAs have been reported as potential biomarkers for various pathologic conditions. This study investigated miR-30a, miR-195 and let-7b as potential of biomarker for acute myocardial infarction (AMI). Methods and Results Plasma samples from 18 patients with AMI and 30 healthy adults were collected. Total RNA was extracted from plasma with TRIzol LS Reagent. MiRNA levels and plasma cardiac troponin I (cTnI) concentrations were measured by quantitative real-time PCR and ELISA assay, respectively. Results showed that circulating miR-30a in AMI patients was highly expressed at 4 h, 8 h and 12 h after onset of AMI, and miR-195 was highly expressed at 8 h and 12 h. However, let-7b was lower in AMI patients than in controls throughout the whole time points. Interestingly, in these patients, circulating miR-30a, miR-195 and let-7b all reached their expression peak at 8 h. By the receiver operating characteristic (ROC) curve analyses, these plasma miRNAs were of significant diagnostic value for AMI. The combined ROC analysis revealed the an AUC value of 0.93 with 94% sensitivity and 90% specificity at 8 h after onset, and an AUC value of 0.92 with 90% sensitivity and 90% specificity at 12 h after onset, in discriminating the AMI patients from healthy controls. Conclusions Our results imply that the plasma concentration of miR-30a, miR-195 and let-7b can be potential indicators for AMI.
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