Metabolic fate analysis of Huang-Lian-Jie-Du Decoction in XXXX urine and feces by LC-IT-MS combining with LC-FT-ICR-MS: a feasible strategy for the metabolism study of Chinese medical formula.

@entity32 @entity101 @entity6 @entity3088 @entity35 @entity68346 @entity3096
UNASSIGNED: 1.   Huang-Lian-Jie-Du Decoction (HLJDD) is widely used for the treatment of @entity101 , @entity6 , @entity32 in clinic. In the present study, the comprehensive metabolic profile of HLJDD was demonstrated reliably and rapidly followed by the metabolic pathway analysis of six typical pure compounds (four alkaloids, one @entity3096 and one iridoid) in HLJDD using LC-IT-MS combined with high resolution LC-FT-ICR-MS. 2.   Totally, 85 compounds, including 32 prototype components and 53 biotransformed metabolites were detected and characterized in the urine and feces after oral administration of HLJDD and six pure compounds to @entity35 , respectively. Among them, 17 prototypes were identified definitely with standard references. 3.   Hydroxylation, demethylation and glucuronidation reactions of alkaloids, as well as glucuronidation and sulfonation reactions of @entity68346 and @entity3088 , were observed as the major metabolic pathways of HLJDD. @entity3088 , @entity68346 and their metabolites were mainly excreted from urine. However, amount of alkaloids were detected in feces. 4.   In general, the distinctive metabolic process of three kinds of representative components in HLJDD was clarified. The in vivo metabolic network of HLJDD was demonstrated. Meanwhile, the investigation of representative pure compounds in metabolic study provided a valuable strategy to elucidate the full-scale metabolic fate of HLJDD. This might be helpful to understand the in vivo mechanism of Traditional Chinese medicine (TCM).
