代谢
高达40%的放射性标记物在B6C3F1小鼠和Fischer 344/N大鼠口服灌胃100 mg/kg体重后通过尿液回收(环-(14)C)蓝色1号(29 mCi/mmol (113.6 uCi/mg); 97%纯)。HC蓝色1号口服给予B6C3F1小鼠产生了三种等量的代谢物,这些代谢物比母体化合物更具水溶性;其中一种是母体化合物的葡萄糖苷酸。从小鼠和大鼠分离的肝细胞代谢(环-(14)C)HC蓝色1号(200 uM (51 mg))得到的代谢物轮廓与体内观察到的相似。高效液相色谱分离显示,HC蓝色1号在小鼠体内被广泛代谢为五种主要代谢物。对这些代谢物进行热喷雾液相色谱-质谱分析,为硝基还原、N-去甲基化和共轭(去甲基化产物的葡萄糖苷酸化和乙酰化)提供了初步证据。在大鼠中,HC蓝色1号产生了与小鼠中发现的相似的三种代谢物。
Up to 40% of radiolabel was recovered in the urine of B6C3F1 mice and Fischer 344/N rats after oral administration by gavage of 100 mg/kg body weight (ring-(14)C) Blue No. 1 (29 mCi/mmol (113.6 uCi/mg); 97% pure). HC Blue No.1 administered orally to B6C3F1 mice yielded three metabolites in equal proportions, which were more water soluble than the parent compound; one was a glucuronide of the parent compound. Metabolism of (ring-(14)C) HC Blue No. 1 (200 uM (51 mg)) by hepatocytes isolated from mice and rats yielded profiles similar to those seen in vivo. High-performance liquid chromatography separation showed that HC Blue No.1 is metabolized extensively in mice to five major metabolites. Thermospray liquid chromatography mass spectrometry of these metabolites provided tentative evidence for nitroreduction, N-demethylation and conjugation (glucuronidation of a demethylated product and acetylation). In rats, HC Blue No. 1 produced three metabolites similar to those fund in mice.
来源:Hazardous Substances Data Bank (HSDB)