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catecholamine
(redirected from Catecholamines)

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
cat·e·cho·la·mine  (kt-kl-mn, -kô-)
n.
Any of a group of amines derived from catechol that have important physiological effects as neurotransmitters and hormones and include epinephrine, norepinephrine, and dopamine.

catecholamine [ˌkætəˈkɒləˌmiːn]
n
(Life Sciences & Allied Applications / Biochemistry) any of a group of hormones that are catechol derivatives, esp adrenaline and noradrenaline
[from catechu + -ol1 + amine]

catecholamine  (kt-kl-mn, -kô-)
Any of a group of amines derived from catechol that have important physiological effects as neurotransmitters and hormones and include epinephrine, norepinephrine, and dopamine.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.catecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
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
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


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Patients with heart disease usually have higher levels of catecholamines - hormones that activate the beta-adrenergic receptors to stimulate cardiac muscle contraction.
A similar case reported in 1990 indicated that adrenal cortical adenomas causing clinical features of phaeochromocytoma and elevated 24 hour urinary catecholamines have been reported rarely and that patients with hypertension and on long term medication of beta blockers may have an increased urinary norepinephrine excretion (6).
In preparation for an emergency, a surge of catecholamines (a group of excitatory neurotransmitters that include epinephrine and norepinephrine) floods the bloodstream and increases one's heart rate and blood pressure in the process.
 
 
 
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