from The American Heritage® Dictionary of the English Language, 4th Edition

  • 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a class of aromatic amines derived from pyrocatechol that are hormones produced by the adrenal gland.

from the GNU version of the Collaborative International Dictionary of English

  • n. any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland. They function as nerotransmitters in the sympathetic nervous system. Also, any structurally related chemical substance, whether natural or synthetic.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland


Sorry, no etymologies found.


  • At Harvard he was interested in catecholamine biosynthesis and secretion, particularly from the adrenal gland.

    Martin Chalfie - Autobiography

  • Epinephrine is a catecholamine, which is a sympathomimetic monoamine that is created from amino acids phenylalanine and tyrosine.

    CreationWiki - Recent changes [en]

  • Thus, a unique amplification 4 Therefore, telethought com - and dampening system producing munication is the ability to pene - concurrent changes in receptor sen - trate the different energy fields by sitivity and signal intensity can be means of a superior mental energy shown, whereby small changes in via a clear signal, focused through the "catecholamine" concentration the third eye, which is directly at the receptor sites in the brain connected with Gravitational produce 30 to 40 fold changes in waves. enzyme activity.

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  • This activity leads to a depression of the sympathetic nervous system, a respiratory depression, general cardiac collapse and death. 4 Natural catecholamine stores may not be depleted for up to 24 hours of continued MAO inhibition. 1 Signs and symptoms following an acute overdosage will usually resolve in three to four days, but may persist for up to two weeks in some patients. 5

    Monamine Oxidase Inhibitors

  • In a retrospective study by Rabkin and associates, the most frequently occurring adverse effects included hypertensive reactions (some of these were due to inadvertent consumption of foods containing tyramine or concurrent use of catecholamine-containing drugs), orthostatic hypotension, hypomania, weight gain and sexual dysfunction. 2 In most cases adverse effects were controlled with dosage adjustments.

    Monamine Oxidase Inhibitors

  • As a consequence of the inhibition of MAO, biogenic amines can not be converted into catecholamines, causing a drop or deficiency in neuronal catecholamine stores.

    Monamine Oxidase Inhibitors

  • This chapter is going to be full of words like catecholamine and iminodibenzyl and phenothiazine.


  • The catecholamine hypothesis, he wrote, was “at best, a reductionistic oversimplification of a very complex biological state.”


  • And when Axelrod showed that imipramine worked the latter way, blocking the reuptake of norepinephrine, it was easy to believe that the catecholamine hypothesis was correct.


  • The catecholamine hypothesis, simplistic and speculative as it was, still had “considerable heuristic value, providing the investigator and the clinician with a frame of reference integrating much of our experience with those pharmacological agents which produce alterations in human affective states.”



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