title: [Evaluation on hepatotoxicity caused by Dioscorea bulbifera based on analysis of bile acids].
abstract: Metabolic profile of bile acids was used to evaluate hepatotoxicity of mice caused by ethanol extraction of Dioscorea bulbifera L. (ethanol extraction, ET) and diosbulbin B (DB), separately. Ultra-performance liquid chromatography coupled with quadrupole mass spectrometry (UPLC-MS) was applied to determine the contents of all kinds of endogenous bile acids including free bile acids, taurine conjugates and glycine conjugates. Obvious liver injuries could be observed in mice after administrated with ET and DB. Based on the analysis using principle components analysis (PCA), toxic groups could be distinguished from their control groups, which suggested that the variance of the contents of bile acids could evaluate hepatotoxicity caused by ET and DB. Meanwhile, ET and DB toxic groups were classified in the same trends comparing to control groups in the loading plot, and difference between the two toxic groups could also be observed. DB proved to be one of the toxic components in Dioscorea bulbifera L. Bile acids of tauroursodeoxycholic acid (TUDCA), taurochenodeoxycholic acid (TCDCA), taurocholic acid (TCA), taurodeoxycholic acid (TDCA), cholic acid (CA) and others proved to be important corresponds to ET and DB induced liver injury according to analysis of partial least square-discriminant analysis (PLS-DA) and the statistical analysis showed that there were significant differences between the control groups and toxic groups (P < 0.01). Furthermore, good correlation could be revealed between the foregoing bile acids and ALT, AST. It indicated that taurine conjugated bile acids as TUDCA, TCDCA, TCA and TDCA along with CA could be considered as sensitive biomarkers of ET and DB induced liver injury. This work can provide the base for the further research on the evaluation and mechanism of hepatotoxicity caused by Dioscorea bulbifera L.
authors.affiliation: The MOE Key Laboratory for Standardization of Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201210, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Xu
authors.forename: Chong-Chong
authors.initials: CC
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Yang
authors.forename: Jun-Ming
authors.initials: JM
authors.lastname: Wang
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Ji
authors.forename: Zheng-Tao
authors.initials: ZT
authors.lastname: Wang
authors.forename: Zhi-Bi
authors.initials: ZB
authors.lastname: Hu
mesh_terms: D000818:Animals; D001647:Bile Acids and Salts / Q000378:metabolism*; D056486:Chemical and Drug Induced Liver Injury / Q000378:metabolism*; D019826:Cholic Acid / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D027742:Dioscorea / Q000633:toxicity*; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification / Q000633:toxicity*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000302:isolation & purification / Q000633:toxicity*; D016018:Least-Squares Analysis; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D010946:Plants, Medicinal / Q000633:toxicity; D025341:Principal Component Analysis; D027343:Rhizome / Q000633:toxicity; D053719:Tandem Mass Spectrometry / Q000379:methods; D013655:Taurochenodeoxycholic Acid / Q000378:metabolism; D013656:Taurocholic Acid / Q000378:metabolism; D013657:Taurodeoxycholic Acid / Q000378:metabolism
chemical_list: D001647:Bile Acids and Salts; D004365:Drugs, Chinese Herbal; D006576:Heterocyclic Compounds, 4 or More Rings; C569454:diosbulbin B; D013655:Taurochenodeoxycholic Acid; D013657:Taurodeoxycholic Acid; D013656:Taurocholic Acid; C031655:ursodoxicoltaurine; D019826:Cholic Acid