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体外二甲基亚硝胺代谢物的鉴定

Identification of dimethylnitrosoamine metabolites in vitro.

作者信息

Grilli S, Prodi G

出版信息

Gan. 1975 Oct;66(5):473-80.

PMID:3448
Abstract

The incubation of dimethylnitrosoamine (DMNA) in the presence of rat liver microsomes leads to production of formaldehyde, formic acid, methylamine, and N-methylhydrazine. When pH 5-enzymes are added to the medium there is also the formation of N-methylhydroxylamide and N,N-dimethylhydrazine. The last compound is the only metabolite produced, to a lesser extent, by the pH 5-enzymes. Thus, the denitrosated or non-denitrosated metabolites are produced either by an oxidative dealkylation and by a reduction of DMNA, catalysed by microsomal and cellular soluble enzymes.

摘要

在大鼠肝微粒体存在的情况下,二甲基亚硝胺(DMNA)的温育会导致甲醛、甲酸、甲胺和N - 甲基肼的产生。当向培养基中添加pH 5 - 酶时,还会形成N - 甲基羟胺和N,N - 二甲基肼。最后一种化合物是pH 5 - 酶产生的唯一代谢产物,产量较少。因此,脱亚硝基或未脱亚硝基的代谢产物是由微粒体和细胞可溶性酶催化的氧化脱烷基作用以及DMNA的还原作用产生的。

相似文献

1
Identification of dimethylnitrosoamine metabolites in vitro.体外二甲基亚硝胺代谢物的鉴定
Gan. 1975 Oct;66(5):473-80.
2
Degradation of dimethylnitrosoamine catalysed by physical and chemical agents.
Gan. 1975 Oct;66(5):481-8.
3
The binding of dimethylnitrosamine to nucleic acids catalyzed by liver enzymic fractions.肝酶组分催化二甲基亚硝胺与核酸的结合。
Cancer Lett. 1975 Nov;1(2):85-90. doi: 10.1016/s0304-3835(75)95496-8.
4
An in vitro study on the interaction between dimethylnitrosamine and nucleic acids via a microsomal system.
Gan. 1977 Apr;68(2):129-37.
5
Metabolism and activation of 1,1-dimethylhydrazine and methylhydrazine, two products of nitrosodimethylamine reductive biotransformation, in rats.大鼠体内亚硝基二甲胺还原生物转化的两种产物1,1-二甲基肼和甲基肼的代谢与活化
J Natl Cancer Inst. 1983 Nov;71(5):1047-51.
6
Kinetic studies on the hepatic microsomal metabolism of dimethylnitrosamine, diethylnitrosamine, and methylethylnitrosamine in the rat.大鼠肝脏微粒体对二甲基亚硝胺、二乙基亚硝胺和甲基乙基亚硝胺代谢的动力学研究。
J Natl Cancer Inst. 1978 Aug;61(2):517-21.
7
A new assay for the microsomal metabolism of nitrosamines.一种用于亚硝胺微粒体代谢的新检测方法。
Cancer Res. 1980 Sep;40(9):3241-4.
8
Metabolism of N-nitrosodialkylamines by human liver microsomes.人肝微粒体对N-亚硝基二烷基胺的代谢
Cancer Res. 1988 Mar 15;48(6):1499-504.
9
In vivo reaction of dimethylnitrosamine with nucleic acids.二甲基亚硝胺与核酸的体内反应。
Gan. 1978 Feb;69(1):39-45.
10
Metabolism and activation of 1,1-dimethylhydrazine and methylhydrazine, two products of N-nitrosodimethylamine reductive biotransformation.N-亚硝基二甲胺还原生物转化的两种产物——1,1-二甲基肼和甲基肼的代谢与活化
IARC Sci Publ. 1984(57):479-84.

引用本文的文献

1
Biodegradation of N-nitrosodimethylamine in aqueous and soil systems.在水相和土壤体系中 N-亚硝基二甲胺的生物降解。
Appl Environ Microbiol. 1985 Oct;50(4):1077-86. doi: 10.1128/aem.50.4.1077-1086.1985.
2
alpha-Hydroxylation pathway in the in vitro metabolism of carcinogenic nitrosamines: N-nitrosodimethylamine and N-nitroso-N-methylaniline.致癌亚硝胺体外代谢中的α-羟基化途径:N-亚硝基二甲胺和N-亚硝基-N-甲基苯胺
Proc Natl Acad Sci U S A. 1981 Oct;78(10):6489-93. doi: 10.1073/pnas.78.10.6489.
3
Further studies on dimethylnitrosamine metabolism, activation and its ability to cause liver injury.
关于二甲基亚硝胺代谢、活化及其致肝损伤能力的进一步研究。
Arch Toxicol. 1981 Jun;47(3):159-68. doi: 10.1007/BF00368676.
4
Histochemical localization of primary and secondary alcohol dehydrogenases in whole-body, freeze-dried sections of mice.
Histochem J. 1984 Sep;16(9):931-40. doi: 10.1007/BF01003849.
5
Direct alkyl chain cleavage after C-hydroxylation of dialkylnitrosamines in rats. A new pathway of the oxidative biotransformation.
Z Krebsforsch Klin Onkol Cancer Res Clin Oncol. 1977;88(3):315-22. doi: 10.1007/BF00305369.