title: Metabolomic analysis of complex chinese remedies: examples of induced nephrotoxicity in the mouse from a series of remedies containing aristolochic Acid.
abstract: Aristolochic acid nephropathy is caused by aristolochic acid (AA) and AA-containing herbs. In traditional Chinese medicine, a principle called "Jun-Chen-Zou-Shi" may be utilized to construct a remedial herbal formula that attempts to mitigate the toxicity of the main ingredient. This study used Bu-Fei-A-Jiao-Tang (BFAJT) to test if the compound remedy based on a principle of "Jun-Chen-Zou-Shi" can decrease the toxicity of AA-containing herbs. We compared the three toxicities of AA standard, Madouling (an Aristolochia herb), and a herbal formula BFAJT. AA standard was given for BALB/c mice at a dose of 5 mg/kg bw/day or 7.5 mg/kg bw/day for 10 days. Madouling and BFAJT were given at an equivalence of AA 0.5 mg/kg bw/day for 21 days. Nephrotoxicity was evaluated by metabolomics and histopathology. The urinary metabolomics profiles were characterized by (1)H NMR spectroscopy. The spectral data was analyzed with partial least squares discriminant analysis, and the significant differential metabolites between groups were identified. The result showed different degrees of acute renal tubular injuries, and metabolomics analysis found that the kidney injuries were focused in proximal renal tubules. Both metabolomics and pathological studies revealed that AA standard, Madouling, and BFAJT were all nephrotoxicants. The compositions of the compound remedy did not diminish the nephrotoxicity caused by AA.
authors.affiliation: Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan ; The Metabolomics Core Laboratory, Center of Genomic Medicine, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan.
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Tsai
authors.forename: Jaw-Jou
authors.initials: JJ
authors.lastname: Kang
authors.forename: Shoei-Sheng
authors.initials: SS
authors.lastname: Lee
authors.forename: San-Yuan
authors.initials: SY
authors.lastname: Wang
authors.forename: I-Lin
authors.initials: IL
authors.lastname: Tsai
authors.forename: Guan-Yuan
authors.initials: GY
authors.lastname: Chen
authors.forename: Hsiao-Wei
authors.initials: HW
authors.lastname: Liao
authors.forename: Li
authors.initials: L
authors.lastname: Wei-Chu
authors.forename: Ching-Hua
authors.initials: CH
authors.lastname: Kuo
authors.forename: Y Jane
authors.initials: YJ
authors.lastname: Tseng