Neuroanatomy and glial cells come in many types (see, for example, the nervous system section of the list of distinct cell types in the adult human body). Neurons are the information-processing cells of the nervous system: they sense our environment, communicate with each other via electrical signals and chemicals called neurotransmitters across synapses, and produce our memories, thoughts and movements. Glial cells maintain homeostasis, produce myelin, and provide support and protection for the brain's neurons. Some glial cells (astrocytes) can even propagate intercellular calcium waves over long distances in response to stimulation, and release gliotransmitters in response to changes in calcium
Glial scar reduce astrogliosis), and increase GAP-43 expression, a useful protein marker for neurite growth. Moreover, reduced astrocyte proliferation decreases expression of chondroitin sulfate proteoglycans (CSPGs), major extracellular matrix molecules associated with inhibition of neuroregneration after trauma to the CNS. Recent work has also shown that olomoucine suppresses microglial proliferation within the glial scar. This is particularly important because microglia play an important role in the secondary damage following lesion to the CNS, during the time of scar formation. Microglial cells are activated via various pro-inflammatory cytokines (some discussed above). Rat spinal cord injury models have shown remarkable improvements after the administration