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catecholamine

(Encyclopedia) catecholaminecatecholaminekătˌəkôlˈəmēn [key], any of several compounds occurring naturally in the body that serve as hormones or as neurotransmitters in the sympathetic nervous system…

dopamine

(Encyclopedia) dopaminedopaminedōpˈəmēn [key], one of the intermediate substances in the biosynthesis of epinephrine and norepinephrine. See catecholamine.

l-dopa

(Encyclopedia) l-dopal-dopaĕl-dōˈpə [key], drug used to alleviate some of the symptoms of Parkinson's disease, particularly trembling, rigidity, and slow movements; the drug is also called levodopa.…

epinephrine

(Encyclopedia) epinephrineepinephrineĕpˌənĕfˈrīn [key], hormone important to the body's metabolism, also known as adrenaline. Epinephrine, a catecholamine, together with norepinephrine, is secreted…

norepinephrine

(Encyclopedia) norepinephrinenorepinephrinenôrˌĕpīnĕfˈrən [key], a neurotransmitter in the catecholamine family that mediates chemical communication in the sympathetic nervous system, a branch of the…