Crossword clues for catecholamine
The Collaborative International Dictionary
catecholamine \catecholamine\ n. [catechol + amine.] 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.
Douglas Harper's Etymology Dictionary
type of hormone, from catechol (1880), from catechu, 17c. name for an astringent substance used in medicines, dyeing, etc., which apparently is from Malay kachu.
Wiktionary
n. (context biochemistry English) Any of a class of aromatic amines derived from pyrocatechol that are hormones produced by the adrenal gland.
WordNet
n. any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
Wikipedia
A catecholamine (CA) is a monoamine, an organic compound that has a catechol ( benzene with two hydroxyl side groups at carbons 1 and 2) and a side-chain amine.
Catechol can be either a free molecule or a substituent of a larger molecule, where it represents a 1,2-dihydroxybenzene group.
Catecholamines are derived from the amino acid tyrosine. Catecholamines are water-soluble and are 50%-bound to plasma proteins in circulation.
Included among catecholamines are epinephrine (adrenaline), norepinephrine (noradrenaline), and dopamine, all of which are produced from phenylalanine and tyrosine. Release of the hormones epinephrine and norepinephrine from the adrenal medulla of the adrenal glands is part of the fight-or-flight response.
Tyrosine is created from phenylalanine by hydroxylation by the enzyme phenylalanine hydroxylase. Tyrosine is also ingested directly from dietary protein. Catecholamine-secreting cells use several reactions to convert tyrosine serially to L-DOPA and then to dopamine. Depending on the cell type, dopamine may be further converted to norepinephrine or even further converted to epinephrine.
Various stimulant drugs are catecholamine analogues.
Usage examples of "catecholamine".
When she was alone, she could feelalmost regretfullythe spasm of annoyance subsiding, the catecholamines within her skull and the adrenaline in her bloodstream returning to their usual levels.
It's a classic pharmacological analogue, similar to inserting permanent stimulus molecules in the brain's opiate-receptor sitesexcept that the CI technology uses the neurosystem's own catecholamines, so the process is even more efficient.
Stress is frequently measured by the amount of corticosteroids and catecholamines (adrenalin and nor-adrenalin, for example) found in the blood and urine.
Your work with tyrosine hydroxylase interaction with catecholamines is little short of revÂolutionary.
Your work with tyrosine hydroxylase interaction with catecholamines is little short of revÂ.