title: Metabonomic study of biochemical changes in the serum of type 2 diabetes mellitus patients after the treatment of metformin hydrochloride.
abstract: A metabonomic study on biochemical changes in the serum of type 2 diabetes mellitus patients after the treatment of metformin hydrochloride was performed. (1)H NMR and UPLC/MS were used to generate metabolic fingerprints for the metabonomic analysis of serum samples obtained from 20 type 2 diabetes mellitus patients without any drugs treatment and 15 type 2 diabetes mellitus patients treated with metformin hydrochloride for 3 months. The resulting data were subjected to chemometric analysis (principal component analysis and partial least squares discriminant analysis) to investigate the effect of metformin hydrochloride on serum metabolite profiles of type 2 diabetes mellitus patients. (1)H NMR spectroscopic analysis revealed increased trimethylamine-N-oxide (TMAO), 3-hydroxybutyrate (3-HB) and decreased glucose, N-acetyl glycoprotein (NAC), lipoprotein, lactate, acetoacetate and unsaturated lipids in serum from metformin treated patients compared to untreated ones. UPLC/MS in positive electrospray ionization detected increased tryptophan and decreased lysophosphatidylcholines (C16:0 LPC, C18:0 LPC and C18:2 LPC) as well as phenylalanine in treated group. Both analytical techniques used in this study were able to detect biochemical changes in the serum of type 2 diabetes mellitus patients after the treatment of metformin hydrochloride, which may be helpful to the understanding of action mechanism of metformin hydrochloride.
authors.affiliation: Department of Analytical Chemistry, Shenyang Pharmaceutical University, Shenyang, PR China.
authors.forename: Taoguang
authors.initials: T
authors.lastname: Huo
authors.forename: Shuang
authors.initials: S
authors.lastname: Cai
authors.forename: Xiumei
authors.initials: X
authors.lastname: Lu
authors.forename: Yi
authors.initials: Y
authors.lastname: Sha
authors.forename: Mingyang
authors.initials: M
authors.lastname: Yu
authors.forename: Famei
authors.initials: F
authors.lastname: Li
mesh_terms: D015415:Biomarkers; D002851:Chromatography, High Pressure Liquid; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000188:drug therapy*; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D016018:Least-Squares Analysis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D055432:Metabolomics; D008687:Metformin / Q000627:therapeutic use*; D015999:Multivariate Analysis; D025341:Principal Component Analysis; D012015:Reference Standards; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D015415:Biomarkers; D007004:Hypoglycemic Agents; D008687:Metformin