title: Metabolite identification of seven active components of Huan-Nao-Yi-Cong-Fang in rat plasma using high-performance liquid chromatography combined with hybrid ion trap/time-of-flight mass spectrometry.
abstract: Huan-Nao-Yi-Cong-Fang (HNYCF) is a potential prescription in treating Alzheimer's disease. Seven constituents [ferulic acid (FA), 2,3,5,4'-tetrahydroxystilbene-2-O-β-d-glucoside (THSG), berberine hydrochloride (BHCl), emodin, ginsenoside Rg1 (Rg1), ginsenoside Re (Re) and ginsenoside Rb1 (Rb1)] have been used as quality chemical markers of HNYCF owing to their biological significance and high contents in crude plant materials. This study explored the metabolites of the seven bioactive components in rat plasma to give useful data for further study of the action mechanism of HNYCF. LC/MS-IT-TOF was used to simultaneously characterize the metabolites of the seven components. Using the combination of MetID Solution 1.0 software and accurate mass measurements, the metabolites of HNYCF were reliably characterized. Their structures were elucidated based on the accurate MS(2) spectra and comparisons of their changes in accurate molecular masses and fragment ions with those of parent compounds. A total of five parent active compounds (BHCl, emodin, Rg1, Rb1 and Re) and 10 metabolites were found from the rat plasma 2 h after oral administration of HNYCF dosage, of which two metabolites of emodin were observed for the first time. The proposed metabolic pathways of the bioactive components in the rat plasma are helpful for further studies on the pharmacokinetics and real active compound forms of this drug.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
authors.forename: Minchao
authors.initials: M
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
authors.forename: Yanzhen
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, People's Republic of China.
authors.forename: Jiangang
authors.initials: J
authors.lastname: Liu
authors.affiliation: Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Wei
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001599:Berberine / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000737:chemistry* / Q000493:pharmacokinetics; D004642:Emodin / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics; D036145:Ginsenosides / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics; D008297:Male; D013058:Mass Spectrometry / Q000379:methods*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D004365:Drugs, Chinese Herbal; D036145:Ginsenosides; D001599:Berberine; D004642:Emodin
keywords: Huan-Nao-Yi-Cong-Fang; LC/MS-IT-TOF; active components; metabolism; metabolites