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histamine

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
his·ta·mine  (hst-mn, -mn)
n.
A physiologically active amine, C5H9N3, found in plant and animal tissue and released from mast cells as part of an allergic reaction in humans. It stimulates gastric secretion and causes dilation of capillaries, constriction of bronchial smooth muscle, and decreased blood pressure.
[hist(idine) + amine.]
hista·minic (-mnk) adj.
histamine [hiss-ta-meen]
Noun
a chemical compound released by the body tissues in allergic reactions [Greek histos tissue + amine]
histamine  (hst-mn)
An organic compound found widely in animals and plants that in humans and other mammals is released as part of the body's immune response, causing physiological changes including dilation of the blood vessels, contraction of smooth muscle (as in the airways), and increased gastric acid secretion. The itching and sneezing typical of respiratory allergies are caused by the release of histamine. Chemical formula: C5H9N3
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.histamine - amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions
amine, aminoalkane - a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals
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The active ingredient of Higuard azelastine hydrochloride exhibits anti-allergic effects by inhibiting and releasing leukotriens and histamine that cause allergy, relieving allergic symptoms including rhinitis (sneezing, runny and stuffy nose) and skin problems (urticaria, eczema, etc).
Eisai Introduces Rx-to-OTC Switch Product for Allergy-related ... by JCNN News Summaries
In the present study, we show that the heavy metal cadmium and the pesticide endosulfan produce such effects through an interaction of specific cerebral histamine receptor subtypes in the teleost ornate wrasse (Thalassoma pavo).
Some environmental contaminants influence motor and feeding behaviors ... by Canonaco Marcello / Environmental Health Perspectives
Vitamin C supplementation (1,000 mg three times per day) reduced histamine levels in people with either high histamine levels or low blood levels of vitamin C.
Herbal sinus remedies by Sikand, Leena / New Life Journal
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