Astrogliosis (also known as astrocytosis or referred to as reactive astrocytes) is an abnormal increase in the number of astrocytes due to the destruction of nearby neurons from CNS trauma, infection, ischemia, stroke, autoimmune responses, and neurodegenerative disease. In healthy neural tissue, astrocytes play critical roles in energy provision,...
<pathology> Hypertrophy of the astroglia, usually in response to injury. ... (18 Nov 1997) ... 
(as-trog″le-o´sis) gliosis.
Hypertrophy of the astroglia, usually in response to injury.