TY - JOUR PY - 2019// TI - Morphological and functional alterations of astrocytes responding to traumatic brain injury JO - Journal of integrative neuroscience A1 - Cheng, Xiaoyun A1 - Wang, Jin A1 - Sun, Xiao A1 - Shao, Lishi A1 - Guo, Zeyun A1 - Li, Yang SP - 203 EP - 215 VL - 18 IS - 2 N2 - Astrocytes, one of the most abundant and heterogeneous types of glial cell in the brain and spinal cord, are responsible for various essential functions in the healthy central nervous system, including maintaining the blood brain barrier integrity, regulating neuron differentiation and supporting, nourishing, protecting, insulating and repairing neurons. They also fulfill a range of other homeostatic maintenance functions. Astrocytes are activated after traumatic brain injury. They then exhibit heterogeneous gene expression and changes in morphology, proliferative capacity and various functions in response either acute or chronic brain injury and associated secondary brain injury. Some biomarkers and imaging tools have been used to monitor astrogliosis after traumatic brain injury. Initially, morphological characteristics and the physiology of astrocytes are reviewed. Subsequently, alterations of astrocytes are described, which includes both the complex mechanisms and roles of reactive astrocytes. The roles of biomarkers and signaling pathways following traumatic brain injury have been summarized as well as the morphological and functional changes in astrocytes. In the latter case, by considering astrocytes as therapeutic targets of traumatic brain injury, the mechanisms of the latest drug treatments are explained. This review highlights the beneficial effects of astrogliosis according to some recent findings, which provides new insights for the treatment of traumatic brain in jur.

©2019 Cheng et al. Published by IMR press. All rights reserved.

Language: en

LA - en SN - 0219-6352 UR - http://dx.doi.org/10.31083/j.jin.2019.02.110 ID - ref1 ER -