title: Development and validation of a liquid chromatography-electrospray ionization-tandem mass spectrometry method for the determination of urolithin C in rat plasma and its application to a pharmacokinetic study.
abstract: Urolithins are microflora human metabolites of dietary ellagic acid derivatives. There is now a growing interest in the biological activities of these compounds. Several studies suggest that urolithins have potential antioxidant, anti-inflammatory, anticancer and anti-glycative activities. Recently, our group investigated the role of urolithins as potential anti-diabetic treatments; among the four urolithins, urolithin C was the most promising compound. The purpose of this paper was to develop a rapid, sensitive and specific liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method for the determination of urolithin C in rat plasma. To date, no method is reported for the quantification of urolithin C in any of the matrices. Plasma samples were extracted with ethyl acetate. Urolithin D was selected as the internal standard. The separation was carried out on a C18 Kinetex EVO column (2.1mm×150mm, 2.6μm) using a mobile phase of acetonitrile-1% aqueous formic acid solution (30:70, v/v). A triple quadrupole mass spectrometer in the negative ion mode was used for the determination of the target analyte. The monitored ion transitions were m/z 243→187 for urolithin C and m/z 259→213 for the internal standard. The calibration curve range was 4.95-1085μg/L (r2>0.994). The intra- and inter-day precisions were less than 10%; accuracies ranged from 96.6 to 109%. The mean extraction recovery of urolithins C and D was greater than 91%. No significant matrix effects and no carryover effects were observed. Small changes in LC-ESI-MS/MS conditions did not have significant effect on the determination of urolithin C. Stability tests under various conditions were also investigated. This highly specific and sensitive method was used to analyze samples collected during preclinical pharmacokinetic studies in rats. Glucuronyl and sulfate conjugates of urolithin C were the main metabolites detected in plasma.
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Morgane
authors: M
authors: Bayle
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Céline
authors: C
authors: Roques
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Bénédicte
authors: B
authors: Marion
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Michel
authors: M
authors: Audran
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Catherine
authors: C
authors: Oiry
authors: R&D Department, Pharmacometrica, Longcol, La Fouillade, France. Electronic address: fbressolle@yahoo.fr.
authors: Françoise M M
authors: FMM
authors: Bressolle-Gomeni
authors: Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, Université de Montpellier, CNRS, ENSCM, Faculté de Pharmacie, 15 Avenue Charles Flahault BP14491, 34093 Montpellier Cedex 5, France.
authors: Gérard
authors: G
authors: Cros
mesh_terms: D000818:Animals; D002853:Chromatography, Liquid / Q000379:methods / Q000592:standards; D047348:Hydrolyzable Tannins / Q000097:blood* / Q000493:pharmacokinetics*; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods* / Q000592:standards; D053719:Tandem Mass Spectrometry / Q000379:methods* / Q000592:standards
chemical_list: D047348:Hydrolyzable Tannins; C588364:urolithin C
keywords: LC-ESI–MS/MS; Quantitation; Rat Plasma; Type 2 diabetes; Urolithin C