Intropin Definition


Intropin: One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from tyrosine and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action.

Synonym: hydroxytyramine, dopamine hydrochloride, dopamine.