Abstract
Glioma is the most common type of primary malignant tumor in the central nervous system (CNS) with a high incidence and a high mortality rate, as well as an extremely low 5-year survival rate. As a class of small non-coding RNAs, microRNAs (miRNAs) may be closely involved in carcinogenesis and might also be connected with glioma diagnosis and prognosis. In this study, we aimed at investigating the expression level of microRNA-183 (miR-183) in 105 cases of glioma tissues of four World Health Organization (WHO) grades and 10 cases of normal brain tissues and its potential predictive and prognostic values in glioma. We found that the expression levels of miR-183 were significantly higher in glioma tissues than that in normal brain tissues, and also higher in high-grade gliomas (WHO grade III and IV) compared with low-grade gliomas (WHO grade I and II). The miR-183 expression level was classified as low or high according to the median value. High expression of miR-183 was found to significantly correlate with larger tumor size, higher WHO grade, and worse Karnofsky performance score (KPS). Kaplan–Meier survival analysis showed that patients with high miR-183 expression had worse overall survival (OS) and progression-free survival (PFS) than patients with low miR-183 expression. Moreover, univariate and multivariate analyses indicated that miR-183 expression level was an independent prognostic parameter of a patient’s OS and PFS. In conclusion, our study indicated that miR-183 was upregulated in glioma, and that it may be used as a potential biomarker of poor prognosis in patients with glioma.
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Acknowledgments
This study was supported by National Natural Science Foundation of China (Nos. 81371294, 81401026, 81400980 and 81401029) and Jiangsu Provincial Natural Science Foundation of China (No. BK20141375).
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Z. Ye and Z. Zhang contributed equally to this work.
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Ye, Z., Zhang, Z., Wu, L. et al. Upregulation of miR-183 expression and its clinical significance in human brain glioma. Neurol Sci 37, 1341–1347 (2016). https://doi.org/10.1007/s10072-016-2599-5
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DOI: https://doi.org/10.1007/s10072-016-2599-5