| / English Dictionary |
CATECHOLAMINE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
Classified under:
Hypernyms ("catecholamine" is a kind of...):
endocrine; hormone; internal secretion (the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect)
Hyponyms (each of the following is a kind of "catecholamine"):
noradrenaline; norepinephrine (a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses)
Adrenalin; adrenaline; epinephrin; epinephrine (a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action)
Context examples:
Nadolol competitively blocks beta-1 adrenergic receptors located in the heart and vascular smooth muscle, inhibiting the activities of the catecholamines epinephrine and norepinephrine and producing negative inotropic and chronotropic effects.
(Nadolol, NCI Thesaurus)
Pargyline selectively inhibits MAO type B, an enzyme catalyzing the oxidative deamination and inactivation of certain catecholamines, such as norepinephrine and dopamine, within the presynaptic nerve terminals.
(Pargyline, NCI Thesaurus)
The acetate salt form of pirbuterol, a synthetic catecholamine and a pyridine derivative with sympathomimetic and bronchodilatory effects.
(Pirbuterol Acetate, NCI Thesaurus)
An inhibitor of the enzyme TYROSINE 3-MONOOXYGENASE, and consequently of the synthesis of catecholamines.
(Metyrosine, NLM, Medical Subject Headings)
This agent reduces the elevated levels of catecholamines associated with pheochromocytoma, thereby preventing hypertension.
(Metyrosine, NCI Thesaurus)
Methamphetamine acts by both facilitating the release of catecholamines, particularly noradrenaline, dopamine and serotonin, from nerve terminals in the brain and by inhibiting their uptake.
(Methamphetamine, NCI Thesaurus)
Methamphetamine hydrochloride acts by facilitating the release of catecholamines, particularly noradrenaline and dopamine, from nerve terminals in the brain and inhibits their uptake.
(Methamphetamine Hydrochloride, NCI Thesaurus)
This gene is involved in the metabolism of catecholamine drugs and neurotransmitters.
(COMT Gene, NCI Thesaurus)
Dexmethylphenidate hydrochloride acts by facilitating the release of catecholamines, particularly noradrenaline and dopamine, from nerve terminals in the brain and inhibits their uptake.
(Dexmethylphenidate Hydrochloride, NCI Thesaurus)
Several monoamine oxidase inhibitors are useful as antidepressants apparently as a long-term consequence of their modulation of catecholamine levels.
(Antidepressant Agent, NLM, Medical Subject Headings)
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