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Upregulated Serum MiR-146b Serves as a Biomarker for Acute Ischemic Stroke

Zhenzhen Chen,Kaihua Wang,Jianmin Huang,Guangshan Zheng,Y. Lv,Ning Luo,Mingkun Liang,Longjian Huang

Published 2018 in Cellular Physiology and Biochemistry

ABSTRACT

Background/Aims: Stroke is a major cerebrovascular disease threatening human health and life with high morbidity, disability and mortality. It is aimed to find effective biomarkers for the early diagnosis on stroke. Methods: The expressions of 17 previously reported stroke-associated miRNAs were measured using quantitative RT-PCR and the expressions of plasma high-sensitivity C reactive protein (hs-CRP) and serum interleukin 6 (IL-6), the pro-inflammation markers in brain injury, were examined using enzyme-linked immunosorbent assay in 128 acute ischemic stroke (AIS) patients and control group. Results: Serum miR-146b expression was significantly increased within 24 hours after stroke onset in patients compared with control group. In addition, the upregulation of serum miR-146b was strong positively correlated with plasma hs-CRP, infarct volume and National Institutes of Health Stroke Scale (NIHSS) score, and moderate positively correlated with serum IL-6 of patients. Importantly, the combination of plasma hs-CRP and serum miR-146b gained a better sensitivity/specificity for prediction of AIS (AUC from 0.782 to 0.863). Conclusion: Our preliminary findings suggested that upregulated serum miR-146b in acute ischemic stroke might be a potential biomarker for AIS evaluation.

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