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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Bienvenu, Jean-François Ayotte, Pierre Bélanger, Patrick Gaudreau, Eric Dumas, Pierre Provencher, Gilles Bérubé, René |
| Description | Author Affiliation: Provencher G ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Bérubé R ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Dumas P ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Bienvenu JF ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Gaudreau E ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Bélanger P ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3.); Ayotte P ( Centre de toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Wolfe, Québec, QC, Canada G1V 5B3) |
| Abstract | Bisphenol A (BPA) and triclosan (TCS) are ubiquitous environmental phenols exhibiting endocrine disrupting activities that may be involved in various health disorders in humans. There is a need to measure separately free forms and conjugated metabolites because only the former are biologically active. We have developed sensitive methods using isotope-dilution liquid chromatography-tandem mass spectrometry for individual measurements of free BPA and TCS as well as their metabolites, BPA glucuronide (BPAG), BPA monosulfate (BPAS), BPA disulfate (BPADS), TCS glucuronide (TCSG) and TCS sulfate (TCSS) in urine. Comparative analyses of urine samples from 46 volunteers living in the Quebec City area using the new methods and a GC-MS/MS method previously used in our laboratory revealed very strong correlations for total BPA (Spearman's rs=0.862, p<0.0001) and total TCS concentrations (rs=0.942, p<0.0001). Glucuronide metabolites were the most abundant BPA and TCS species in urine samples (>94% of total urinary concentrations). Unconjugated TCS concentrations represented a small proportion of total TCS species (median=1.6%) but its concentration was likely underestimated due to losses by adsorption to the surface of polypropylene tubes used for sample storage. To our knowledge, we are the first to report levels of free, sulfated and glucuronidated TCS levels in human urine. |
| ISSN | 00219673 |
| Volume Number | 1348 |
| e-ISSN | 18733778 |
| Journal | Journal of Chromatography A |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-06-27 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Benzhydryl Compounds Urine Chromatography, Liquid Phenols Tandem Mass Spectrometry Triclosan Endocrine Disruptors Environmental Pollutants Glucuronides Humans Isotopes Chemistry Sulfuric Acid Esters Journal Article Research Support, N.i.h., Extramural Discipline Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Medicine Analytical Chemistry Biochemistry |
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