title: Investigation of in vivo metabolic profile of Abelmoschus Manihot based on pattern recognition analysis.
abstract: BACKGROUND
  Abelmoschus manihot (L.) Medik. var. manihot is one of the most commonly used Chinese medicines and has played an important role in treating chronic glomerulonephritis and diabetic nephropathy.
  
  
  OBJECTIVE
  Metabolites identification of traditional Chinese medicine (TCM) is a complex and time-consuming process due to the complicity of TCM and subsequent large number of detected ions. In this paper, UPLC-MS combined with pattern recognition analysis approach were used to simplify and quicken the identification of the metabolites of Abelmoschus Manihot.
  
  
  METHODS
  Rat urine samples were collected before (as control sample) and after Abelmoschus Manihot administration. Pattern recognition analysis method was used to differentiate components between Abelmoschus Manihot-treated group and its controlled comparison. These components could be considered as Abelmoschus Manihot-related metabolites in vivo.
  
  
  RESULTS
  LC-MS based metabolomics could be an advanced tool to help us find metabolites with regards to its capacity of processing large datasets, differentiating and classifying of sample groups, as well as its indiscriminative nature of biomarker and metabolite identification. Using this method, seven metabolites were identified, which are flavonoid aglycone glucuronidation, sulfatation, and methylation metabolites.
  
  
  CONCLUSIONS
  Our results showed that UPLC-MS based- pattern recognition analysis approach can be used to quickly identify Abelmoschus Manihot related metabolites in biological fluids. Furthermore, this work demonstrates the potential application of combining the UPLC-MS approach with the metabolomics approach in identifying the metabolites of TCM.
authors: Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210046, PR China. njuguo@gmail.com
authors: Jian-Ming
authors: JM
authors: Guo
authors: Ping
authors: P
authors: Lin
authors: Yu-Wei
authors: YW
authors: Lu
authors: Jin-Ao
authors: JA
authors: Duan
authors: Er-Xin
authors: EX
authors: Shang
authors: Da-Wei
authors: DW
authors: Qian
authors: Yu-Ping
authors: YP
authors: Tang
mesh_terms: D028483:Abelmoschus; D000818:Animals; D002853:Chromatography, Liquid; D005260:Female; D035264:Flowers; D008297:Male; D013058:Mass Spectrometry; D008516:Medicine, Chinese Traditional; D055442:Metabolome; D055432:Metabolomics; D010363:Pattern Recognition, Automated; D010936:Plant Extracts / Q000493:pharmacokinetics* / Q000652:urine; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D010936:Plant Extracts