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Astrocytes may serve as intermediaries in the neuronal regulation of blood flow by promoting the myelinating activity of oligodendrocytes. Neuronal electrical activity releases ATP, which has been shown to stimulate myelin formation. This stimulation occurs via astrocytes, which secrete LIM in response to the ATP. LIM is a regulatory protein that promotes the myelinating activity of oligodendrocytes.  

** Astrocytes may serve as intermediaries in neuronal regulation of blood flow.

* '''Promotion of the myelinating activity of oligodendrocytes'''

** Neuronal electrical activity releases ATP, which stimulates myelin formation.  

Astrocytes may play a crucial rule in controlling inflammation in the CNS by secreting chemokines. Astrocytes have also been shown to be able to restrict the entry of inflammatory cells to the CNS. When astrocytes are lost or destroyed, the surrounding neurons become very vulnerable in the face of inflammation.

** This stimulation occurs via astrocytes, which secrete LIM in response to the ATP.

*** LIM is a regulatory protein that promotes the myelinating activity of oligodendrocytes.  

** Astrocytes may play a crucial rule in controlling inflammation in the CNS, by:

*** Secreting chemokines

***  Playing an important role in the entry of inflammatory cells to the CNS.

** When astrocytes are lost or destroyed, the neurons become very vulnerable in the face of inflammation.

==Microglial Cells==

==Microglial Cells==