英语词汇“methacholine”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	methacholine
释义	methacholine, n. Pharm.\|mɛθəˈkəʊliːn\| [f. meth- + -a- + choline n.] A parasympathomimetic choline derivative which can produce bronchoconstriction in hypersensitive patients and is used as a challenge in diagnostic tests for subclinical or incipient asthma; O-acetyl-β-methylcholine, C₈H₁₈ClNO₂ . 1952Jrnl. Amer. Med. Assoc. 17 May 271/1 The pharmacologic properties of methacholine chloride resemble those of acetylcholine, except for the less pronounced nicotinic effect on autonomic ganglions.1961A. Goth Med. Pharmacol. iv. 51 Bethanechol (Urecholine) and methacholine (Mecholyl) have many of the actions of acetylcholine on glands.1987Oxf. Textbk. Med. (ed. 2) II. xv. 78/2 Patients with asthma have similar responses to histamine and methacholine while normal subjects are more sensitive to histamine.1989Nat. Med. Jrnl. India II. 265/1 Two millilitres of sequentially doubling concentrations of methacholine..were nebulized..and delivered through a mouthpiece to the subjects.
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