title: [Analysis of metabolites of daphnetin in the intestinal wall of rats by liquid chromatography and quatrupole-time of flight mass spectrometry].
abstract: In this study, daphnetin and its major metabolites in the intestinal wall of rats were identified by liquid chromatography and quatrupole-time of flight mass spectrometry. Perfusion fluid of duodenum, jejunum, ileum and colon were collected separately for 2 hours from the rat intestine following perfusion with daphnetin. The metabolites of daphnetin in the perfusion fluid of different intestine segments were analyzed by the liquid chromatography and quatrupole-time of flight mass spectrometry. It is shown that the parent drug daphnetin and four metabolites were found in the perfusion fluid of duodenum, jejunum and ileum. However, no metabolites were found in the colon. Among the four metabolites, two daphnetin sulfates (m/z 257) were first discovered as the phase II metabolites of daphnetin in rats, which revealed a new way of daphnetin metabolism in rats.
authors.affiliation: The First Medical College, Nanjing University of Chinese Medicine, Nanjing 210046, China.
authors.forename: Jin-jun
authors.initials: JJ
authors.lastname: Shan
authors.forename: Hai-shan
authors.initials: HS
authors.lastname: Deng
authors.forename: Hong-mei
authors.initials: HM
authors.lastname: Wen
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Shou-chuan
authors.initials: SC
authors.lastname: Wang
authors.forename: Liu-qing
authors.initials: LQ
authors.lastname: Di
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D003106:Colon / Q000378:metabolism; D004386:Duodenum / Q000378:metabolism; D007082:Ileum / Q000378:metabolism; D007413:Intestinal Mucosa / Q000378:metabolism*; D007583:Jejunum / Q000378:metabolism; D008297:Male; D010477:Perfusion; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D021241:Spectrometry, Mass, Electrospray Ionization; D014468:Umbelliferones / Q000378:metabolism* / Q000493:pharmacokinetics*
chemical_list: D014468:Umbelliferones; C039952:daphnetin