论文部分内容阅读
采用现代核磁共振技术,通过分析给药肝、肾损伤模型化合物异硫氰酸α-萘酯(灌胃150 mg/kg体重)和二溴乙胺氢溴酸盐(腹腔注射250 mg/kg体重)24 h内W istar大鼠尿液的1H NMR谱,由尿液中内源性代谢物浓度变化研究了肝、肾模型毒物在大鼠体内的急性毒性。首次利用模式识别技术中的二阶段聚类分析方法解析大鼠尿液1H NMR谱确定了模型化合物尿液1H NMR标记物。结果表明,应用核磁共振和二阶段聚类分析相结合的方法,可提供模型化合物毒性比较清楚的认识。该方法也可用于金属化合物、中药及其它药物的毒性分类和预测研究以及建议各类靶向毒性的NMR标记物。
By using modern nuclear magnetic resonance technique, α-naphthyl isothiocyanate (intragastrically 150 mg / kg body weight) and dibromo ethylamine hydrobromide (intraperitoneal injection 250 mg / kg body weight) ) 1H NMR spectra of urine from Wistar rats within 24 h. The acute toxicities of liver and kidney model toxicants in rats were studied by the change of endogenous metabolites in urine. For the first time, 1H NMR spectra of rat urine were analyzed using two-stage clustering analysis of pattern recognition techniques to determine the 1H NMR marker of model compounds in urine. The results show that the combination of NMR and two-stage clustering analysis provides a clear understanding of the toxicity of model compounds. The method can also be used for the toxicological classification and prediction studies of metal compounds, Chinese medicines and other drugs, as well as for the synthesis of various targeted toxicological NMR markers.