Norepinephrine, also known as noradrenaline, is important for mental focus and emotional stability.
Norepinephrine functions as a neurotransmitter and hormone that regulates the “fight or flight” response and elevates blood pressure and heart rate, stimulates wakefulness, and reduces digestive activity.
Norepinephrine is an excitatory neurotransmitter.
Neurotransmitters are divided into two basic categories:
– Excitatory neurotransmitters stimulate the brain and body.
– Inhibitory neurotransmitters calm the brain and body.
Just as levels of individual neurotransmitters are important in maintaining optimum health, so is the proper balance between your excitatory and inhibitory systems.
Norepinephrine is synthesized from dopamine by means of the enzyme dopamine beta-hydroxylase, with oxygen, copper, and vitamin C as co-factors. Dopamine is synthesized in the cytoplasm, but norepinephrine is synthesized in the neurotransmitter storage vesicles. Cells that use norepinephrine for formation of epinephrine use SAMe as a methyl group donor.
Norepinephrine acts as an excitatory neurotransmitter and modulates neuron voltage potentials to favor glutamate activity and neurotransmitter firing.
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