norepinephrine

[nawr-ep-uh-nef-rin, -reen]

Phonetic (Standard)IPA

noun

Also called noradrenaline.��Physiology.��a neurotransmitter, released by adrenergic nerve terminals in the autonomic and possibly the central nervous system, that has such effects as constricting blood vessels, raising blood pressure, and dilating bronchi.
Pharmacology.��a commercial form of this substance used for emergency treatment of lowered blood pressure.

norepinephrine

/ ˌnɔːrɛpɪˈnɛfrɪn, -riːn /

noun

the US name for noradrenaline

norepinephrine

A substance that acts both as a neurotransmitter and hormone, secreted in the central nervous system, at the nerve endings of the sympathetic nervous system, and by the adrenal gland. Norepinephrine is similar to epinephrine in its physiological effects but acts to regulate regular physiologic activity rather than being released in response to stress. Also called noradrenaline. Chemical formula: C ₈ H ₁₁ NO ₃ .

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Word History and Origins

Origin of norepinephrine¹

First recorded in 1940–45; nor- + epinephrine

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Example Sentences

Examples have not been reviewed.

He began to explore the role of pharmacology in treating depression, and in 1965 published a seminal paper positing that depression arose due to low levels of certain neurochemicals, highlighting the role of one, norepinephrine.

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Beta-blockers work by blocking the action of norepinephrine, a neurotransmitter and hormone involved in the "fight or flight" response.

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The researchers demonstrated the utility of ConVERGD by studying a previously unidentified subpopulation of norepinephrine neurons.

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They found that UV exposure raises norepinephrine levels, decreases leptin levels, and induces the browning of subcutaneous fat, thereby increasing energy expenditure.

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SNRIs — serotonin and norepinephrine reuptake inhibitors — are a common class of medication used in treatment.

From

Noreen No rest for the weary

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