Urine glyphosate level as a quantitative biomarker of oral exposure
| Autor: | Otmar Zoller, Peter Rhyn, Vincent Dudler, Jürg A. Zarn |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Urinary system Metabolite Flour Glycine Organophosphonates Physiology Food Contamination Urine 010501 environmental sciences 01 natural sciences Excretion Dietary Exposure 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Biomonitoring Medicine Toxicokinetics Humans 030212 general & internal medicine 0105 earth and related environmental sciences ADME business.industry Herbicides Public Health Environmental and Occupational Health Pesticide Residues Cicer chemistry Glyphosate Female business Biomarkers Biological Monitoring |
| Zdroj: | International journal of hygiene and environmental health. 228 |
| ISSN: | 1618-131X |
| Popis: | Background Since the classification of glyphosate as a Group 2A substance “probably carcinogenic to humans” by the IARC in 2015, human health concerns have been raised regarding the exposure of operators, bystanders, and consumers. Urine measurement studies have been conducted, but since toxicokinetic data on glyphosate in humans is lacking, a meaningful interpretation of this data regarding exposure is not possible. Objective This study aims to determine the fraction of glyphosate and AMPA excretion in urine after consuming ordinary food with glyphosate residue, to estimate dietary glyphosate intake. Methods Twelve participants consumed a test meal with a known amount of glyphosate residue and a small amount of AMPA. Urinary excretion was examined for the next 48 h. Results Only 1% of the glyphosate dose was excreted in urine. The urinary data indicated the elimination half-life was 9 h. For AMPA, 23% of the dose was excreted in urine, assuming that no metabolism of glyphosate to AMPA occurred. If all of the excreted AMPA was a glyphosate metabolite, this corresponds to 0.3% of the glyphosate dose on a molar basis. Conclusion This study provides a basis for estimating oral glyphosate intake using urinary biomonitoring data. |
| Databáze: | OpenAIRE |
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