Dopamine - Definition

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Dopamine is an amino acid produced by the body in the neuronal cells of the central nervous system. Its natural effect is to increase the diameter of the arteries of the heart, intestine, and especially the kidneys. Dopamine can be manufactured artificially and is used mainly in states of shock: in this context, its desired effects are to increase the workload of the heart, thus increasing blood flow and maintaining blood pressure. The disappearance of this chemical mediator is observed in Parkinson's disease, and the use of L-Dopa, a molecule enabling the synthesis of dopamine, is recommended for treatment of this disease.