Activation and Role of Astrocytes in Ischemic Stroke

被引:85
|
作者
Shen, Xin-Ya [1 ]
Gao, Zhen-Kun [1 ]
Han, Yu [2 ]
Yuan, Mei [2 ]
Guo, Yi-Sha [2 ]
Bi, Xia [3 ]
机构
[1] Shanghai Univ Tradit Chinese Med, Grad Sch, Shanghai, Peoples R China
[2] Shanghai Univ Sport, Dept Sport Rehabil, Shanghai, Peoples R China
[3] Shanghai Univ Med & Hlth Sci, Dept Rehabil Med, Zhoupu Hosp, Shanghai, Peoples R China
关键词
astrocyte; oxidative stress; cerebral edema; glutamate; inflammation; blood-brain barrier; ischemic stroke; BLOOD-BRAIN-BARRIER; GROWTH-FACTOR-BETA; ENDOPLASMIC-RETICULUM STRESS; FOCAL CEREBRAL-ISCHEMIA; CENTRAL-NERVOUS-SYSTEM; INTRACELLULAR SODIUM HOMEOSTASIS; TRANSCRIPTION FACTOR OLIG2; WNT/BETA-CATENIN PATHWAY; INDUCED CELL-DAMAGE; REACTIVE ASTROCYTES;
D O I
10.3389/fncel.2021.755955
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Ischemic stroke refers to the disorder of blood supply of local brain tissue caused by various reasons. It has high morbidity and mortality worldwide. Astrocytes are the most abundant glial cells in the central nervous system (CNS). They are responsible for the homeostasis, nutrition, and protection of the CNS and play an essential role in many nervous system diseases' physiological and pathological processes. After stroke injury, astrocytes are activated and play a protective role through the heterogeneous and gradual changes of their gene expression, morphology, proliferation, and function, that is, reactive astrocytes. However, the position of reactive astrocytes has always been a controversial topic. Many studies have shown that reactive astrocytes are a double-edged sword with both beneficial and harmful effects. It is worth noting that their different spatial and temporal expression determines astrocytes' various functions. Here, we comprehensively review the different roles and mechanisms of astrocytes after ischemic stroke. In addition, the intracellular mechanism of astrocyte activation has also been involved. More importantly, due to the complex cascade reaction and action mechanism after ischemic stroke, the role of astrocytes is still difficult to define. Still, there is no doubt that astrocytes are one of the critical factors mediating the deterioration or improvement of ischemic stroke.
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页数:16
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