Publication Date:
2020-08-28
Description:
Cerebral ischemia/reperfusion (I/R) injury is an obstacle in treating ischemic stroke effectively. miR-98-5p has been reported to have the ability of reducing myocardial I/R injury. To explore the function of miR-98-5p in cerebral I/R, we established mice model of middle cerebral artery occlusion and reperfusion (MCAO/R). The level of miR-98-5p was found to be downregulated in serum of stroke patients and brain tissues of MCAO/R mice. Examination of brain tissues indicated that upregulating miR-98-5p level alleviated the infarction in MCAO/R mice. Moreover, the upregulation of miR-98-5p reduced reactive oxygen species (ROS) production and enhanced superoxide dismutase (SOD) activity in brain tissues of MCAO/R mice. These results indicating that miR-98-5p could protect against oxidative stress. Further study showed that miR-98-5p inhibited apoptosis by reducing the levels of death-associated protein kinase 1 (DAPK1), B cell lymphoma/leukmia-2 (Bcl-2) associated x protein (Bax) and cleaved caspase-3, as well as increasing the level of Bcl-2. In addition, miR-98-5p was found to protect against oxidative stress through downregulating the level of BTB domain and CNC homology 1 (BACH1) and upregulating the levels of NAD(P)H: quinone oxidoreductase 1 (NQO1) and heme oxygenase 1 (HO-1). Therefore, miR-98-5p might be a potential target to treat cerebral I/R injury.
Print ISSN:
0021-924X
Electronic ISSN:
1756-2651
Topics:
Biology
,
Chemistry and Pharmacology
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