单词	histamine
释义	histamine /ˈhɪstəmiːn / noun [mass noun] Biochemistry A compound which is released by cells in response to injury and in allergic and inflammatory reactions, causing contraction of smooth muscle and dilation of capillaries. A heterocyclic amine; chemical formula: C5H9N3. The allergic reaction causes the cells to release histamine, a chemical which prompts the sneezing and itching impulse.... Quercetin reduces histamine degranulation and the subsequent release of histamine and inflammatory leukotrienes. Allergic reactions involve the release of histamine, a chemical that triggers inflammation and swelling. Derivatives histaminic /hɪstəˈmɪnɪk / adjective ... This drug has minimal activity at histaminic, serotonergic, cholinergic or adrenergic receptor sites. Antipsychotics with lower potency have a greater affinity for histaminic, alpha-adrenergic and muscarinic receptors. Depending on the specific drug, there may be effects on muscarinic, adrenergic, or histaminic receptors. Origin Early 20th century: blend of histidine and amine.
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