Why is nitric oxide important for our brain?

The freely diffusible gaseous compound nitric oxide (NO) has been shown to be an important messenger in many organ systems throughout the body, and particularly in the central nervous system (CNS). The importance of NO as an intermediary in cell communication in the brain is highlighted by the fact thatthe excitatory amino acid glutamate, the most abundant CNS neurotransmitter, is an initiator of the reaction that forms NO.

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