norepinephrine

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Related to norepinephrine: dopamine, serotonin

nor·ep·i·neph·rine

(nôr′ĕp-ə-nĕf′rĭn)

A substance, C₈H₁₁NO₃, both a hormone and neurotransmitter, that is secreted by the adrenal medulla and the nerve endings of the sympathetic nervous system and causes vasoconstriction and increases in heart rate, blood pressure, and the sugar level of the blood. Also called noradrenaline.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

norepinephrine

(ˌnɔːrɛpɪˈnɛfrɪn; -riːn)

(Biochemistry) the US name for noradrenaline

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

nor•ep•i•neph•rine

(ˌnɔr ɛp əˈnɛf rɪn, -rin)

n.

a neurotransmitter that is similar to epinephrine, acts to constrict blood vessels and dilate bronchi, used esp. in medical emergencies to raise blood pressure.

norepinephrine

(or noradrenaline) A neurotransmitter affecting various kinds of activity in the body, including blood flow.

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Noun

norepinephrine - a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses

noradrenaline

pressor, vasoconstrictive, vasoconstrictor - any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure

monoamine neurotransmitter - a monoamine that is functionally important in neural transmission

catecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland

Translations

Norepinephrin

norepinephrine

n noradrenalina, norepinefrina (INN)

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In their study, Hsu's team learned that norepinephrine is necessary for hair growth.

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The role of norepinephrine in the enhancement of memory was demonstrated by a 1994 study in which researchers randomly gave subjects either propranolol, a drug that blocks the effect of norepinephrine, or a placebo just before they heard either an emotionally arousing story or a neutral one.

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Anesthetic maintenance was then shifted from desflurane to sevoflurane with oxygen (FiO[sub]2 =[sub] 0.5), and the blood pressure was elevated to 100/50 mmHg after 20 [micro]g of norepinephrine was given.

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As a selective serotonin norepinephrine reuptake inhibitor (SNRI), duloxetine acts at the molecular level to block the reuptake of serotonin and norepinephrine from synaptic clefts.

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He also reported that changes in the abundance of other bacterial species correlated with improvement of metabolic and hormonal parameters, including glucose, insulin, several pituitary hormones and norepinephrine.

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However, the most prescribed classes of drugs in the therapy of depression remain the selective serotonin reuptake inhibitors and the dual reuptake inhibitors of serotonin and norepinephrine, even if part of the data asserts that only 50% of the patients treated with one of these two classes show proof of clinical remission (2).

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Specifically in the sympathetic nervous system, serotonin can inhibit the release of norepinephrine from the locus ceruleus.