代谢
多种化合物的代谢,包括...甲基异氰酸酯...在大鼠和小鼠中使用各种碳-14(C-14)和碳-13(C-13)标记的制剂进行了研究...。将白化瑞士韦伯斯特雄性小鼠以0.05毫摩尔/千克体重的剂量腹腔注射C-14标记化合物。收集尿液、粪便和二氧化碳,并在6、24或48小时后处死小鼠进行组织分析。将雄性斯普拉格-道莱大鼠以与小鼠相同的方式腹腔注射C-14标记化合物,并以口服、腹腔注射和腹腔插管的方式给予C-13标记化合物...小鼠中33mg/kg的甲硫基异氰酸酯(MITC)...在小鼠中,大部分C-14标记化合物出现在尿液中,少量存在于体内。S-(N-甲基-硫代甲酰)谷胱甘肽是尿液中的主要代谢物。在大鼠中,主要代谢物是胆汁中的S-(N-甲基-硫代甲酰)谷胱甘肽和尿液中的S-(N-甲基-硫代甲酰)巯基尿酸...。谷胱甘肽解毒涉及MITC的直接反应,以及针对甲硫基的谷胱甘肽-S-转移酶催化的反应...。
The metabolism of /several compounds, including/ ... methyl isocyanate ... in rats and mice using various carbon-14 (C-14) and carbon-13 (C-13) labeled preparations was studied ... . Male albino-Swiss-Webster-mice were treated intraperitoneally with C-14 labeled compounds at 0.05 millimolar/kilogram body weight. Urine, feces, and carbon-dioxide were collected and the mice were sacrificed at 6, 24, or 48 hours for tissue analysis. Male Sprague-Dawley-rats were treated intraperitoneally with C-14 labeled compounds as for mice, and with C-13 labeled compounds orally, intraperitoneally, and intraperitoneally with cannulation with ... 33mg/kg MITC... in mice, most of the C-14 labeled compounds were in the urine, with a small portion in the body. S-(N-methyl-thiocarbonyl)glutathione was a major metabolite in the urine. In rats, the major metabolites were S-(N-methyl-thiocarbonyl)glutathione in bile and S-(N-methyl-thiocarbonyl)mercapturic-acid in the urine ... . Glutathione detoxification involved direct reaction for MITC, glutathione-S-transferase catalyzed reaction for metham... .
来源:Hazardous Substances Data Bank (HSDB)