THE METABOLISM OF NICOTINE-DELTA-1'(5')-IMINIUM ION, INVIVO AND INVITRO

THE METABOLISM OF NICOTINE-DELTA-1'(5')-IMINIUM ION, INVIVO AND INVITRO
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DOI:
10.1007/bf03189632
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发表时间:
1982-01-01
影响因子:
1.9
通讯作者:
HIBBERD, AR
HIBBERD, AR
中科院分区:
医学4区
文献类型:
--
作者:
GORROD, JW;HIBBERD, AR

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尼古丁是烟草和烟草烟雾的主要成分;它被人类和实验室动物广泛代谢,产生大量代谢产物。尼古丁-Δ 1“(5”)-亚胺鎓离子,无论是作为二高氯酸盐还是盐酸盐,都被肝细胞质酶迅速转化为康尼宁。在氮气氛中孵育表明,纳入continine的O是来自H2O。在对豚鼠或大鼠腹膜内给予烟碱-Δ 1“(5”)-亚胺离子后,在酒中发现可替宁和烟碱-1“-N-氧化物。尼古丁-δ 1“(5”)-亚胺鎓离子显然是尼古丁代谢转化为可替宁的中间体。
Nicotine is a major constituent of tobacco and tobacco smoke; it is extensively metabolized by man and laboratory animals to give a large number of metabolites. Nicotine-.DELTA.1''(5'')-iminium ion, either as the diperchlorate or the hydrochloride, is rapidly converted into continine by a hepatic cytoplasmic enzyme. Incubations in an atmosphere of N indicated that the O incorporated into continine is derived from H2O. Following the i.p administration of nicotine-.DELTA.1''(5'')-iminium ion to guinea pigs or rats, cotinine, and nicotine-1''-N-oxide were found in the wine. Nicotine-.delta.1''(5'')-iminium ion is evidently an intermediate in the metabolic conversion of nicotine to cotinine.