Molecular Classification
Glial cell
Other Names
Astroglia
Disease Roles
NeurodegenerationEpilepsyIschemia/stroke response

Astrocyte Overview

Astrocytes are a major subtype of glial cells in the central nervous system (CNS), recognized for their star-shaped morphology and extensive functional diversity. They play essential roles in maintaining CNS homeostasis, supporting neuronal function, and responding to injury. Astrocyte dysfunction contributes to various neuropathologies. Reactive astrogliosis, characterized by changes in gene expression profile (including upregulation of GFAP), hypertrophy/proliferation of astrocytic processes leading to glial scar formation can impede axonal regeneration but also limits spread of damage/inflammation.

Mechanism of Action

Biological Functions

Structural support
Homeostasis regulation (ion concentrations, neurotransmitter levels, water balance, energy supply)
Blood-Brain Barrier maintenance
Synaptic regulation (neurotransmitter uptake/release, synaptogenesis/plasticity)
Neuroprotection and repair
Glymphatic system contribution

Disease Associations

Neurodegeneration
Epilepsy
Ischemia/stroke response
CNS injury

Safety Considerations

  • Reactive astrogliosis leading to glial scar formation impeding axonal regeneration

Associated Biomarkers

Biomarker
GFAP
S100β