title: Evaluation of analytical performance and reliability of direct nanoLC-nanoESI-high resolution mass spectrometry for profiling the (xeno)metabolome.
abstract: Mass spectrometry (MS) profiling techniques are used for analysing metabolites and xenobiotics in biofluids; however, detection of low abundance compounds using conventional MS techniques is poor. To counter this, nanoflow ultra-high-pressure liquid chromatography-nanoelectrospray ionization-time-of-flight MS (nUHPLC-nESI-TOFMS), which has been used primarily for proteomics, offers an innovative prospect for profiling small molecules. Compared to conventional UHPLC-ESI-TOFMS, nUHPLC-nESI-TOFMS enhanced detection limits of a variety of (xeno)metabolites by between 2 and 2000-fold. In addition, this study demonstrates for the first time excellent repeatability and reproducibility for analysis of urine and plasma samples using nUHPLC-nESI-TOFMS, supporting implementation of this platform as a novel approach for high-throughput (xeno)metabolomics.
authors.affiliation: School of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QG, UK.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Chetwynd
authors.forename: Arthur
authors.initials: A
authors.lastname: David
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Hill
authors.forename: Alaa
authors.initials: A
authors.lastname: Abdul-Sada
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005260:Female; D055442:Metabolome; D055432:Metabolomics / Q000379:methods*; D036103:Nanotechnology / Q000379:methods*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014337:Trout; D015262:Xenobiotics / Q000032:analysis* / Q000097:blood / Q000378:metabolism / Q000652:urine
chemical_list: D015262:Xenobiotics
keywords: mass spectrometry; metabolomics; nanoESI; nanoflow; plasma; urine