Neuroglia in the healthy brain

Area of Science:

• Neuroscience
• Cell Biology

Background:

• Nervous tissue comprises neurons and neuroglia, essential for nervous system function.
• Neuroglia act as homeostatic and defensive cells, exhibiting plasticity for adaptation.

Purpose of the Study:

• To detail the heterogeneity and classification of neuroglia in the nervous system.
• To outline the specific roles of different glial cell types in the central and peripheral nervous systems.

Main Methods:

• Review and synthesis of existing literature on neuroglia morphology and function.
• Classification of glial cells based on their location and developmental origin.

Main Results:

• Peripheral nervous system neuroglia include Schwann cells, satellite glia, and enteric glia.
• Central nervous system neuroglia comprise macroglia (astroglia, oligodendroglia) and microglia.
• Astroglia are diverse homeostatic cells; oligodendroglia myelinate axons; microglia are myeloid-derived immune cells.

Conclusions:

• Neuroglia are a heterogeneous and plastic cell population vital for nervous system physiology, immunity, and adaptation.
• Understanding glial subtypes is key to comprehending nervous system function and disease.