Abstract
Astrocytes are the most diverse and numerous glial cell types in the central nervous system (CNS). They provide structural, nutritional, and metabolic support to neurons and regulate synaptic activity. They are electrically non-excitable but their excitability is manifested by Ca2+ signaling. Astrocytes are also critically involved in many CNS disorders including focal ischemic stroke (FIS), the leading cause of brain injury and human disability. They undergo many changes at different stages after FIS. These changes will affect acute neuronal death and brain damage as well as brain recovery in the chronic phase after ischemic stroke. This chapter provides an overview of recent advances in astrocytic Ca2+ signaling, spatial and temporal dynamics of the morphology and proliferation of reactive astrocytes as well as signaling pathways involved in the reactive astrogliosis after ischemic stroke. This chapter also discusses stem cell properties of reactive astrocytes after FIS and their potential to differentiate into neurons under permissive conditions. The data are all from experimental studies performed in different animal models of ischemic stroke. As astrocytes exhibit high plasticity after FIS, we suggest that targeting local astrocytes is a promising strategy for cell-based stroke therapy.
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This work was supported by the National Institutes of Health [R01NS069726, R01NS094539] and the American Heart Association [13GRNT17020004] to S.D.
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Ding, S. (2016). Astrocytes as a Target for Ischemic Stroke. In: Chen, J., Zhang, J., Hu, X. (eds) Non-Neuronal Mechanisms of Brain Damage and Repair After Stroke. Springer Series in Translational Stroke Research. Springer, Cham. https://doi.org/10.1007/978-3-319-32337-4_6
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DOI: https://doi.org/10.1007/978-3-319-32337-4_6
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