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Role of Body Composition and Physical Activity on Permethrin Urinary Biomarker Concentrations While Wearing Treated Military Uniforms
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October 05 2018
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Source: Toxicol Lett. 299:210-217
[PDF-451.11 KB]
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Alternative Title:Toxicol Lett
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Description:Wearing of permethrin treated clothing is becoming more prevalent in military and outdoor occupational and recreational settings, as a personal protection measure against vector borne diseases transmitted through arthropods (e.g., malaria, Lyme disease). The goal of the study was to prospectively examine permethrin exposure among new U.S. Army recruits who had just been issued permethrin-treated uniforms over a 10-week military training period and whether individual body composition (percent body fat, %BF) and physical workload (total energy expenditure, TEE) influenced the exposure. Exposure was assessed by quantification in urine of three permethrin metabolites, 3-phenoxybenzoic acid (3-PBA), and cis- and trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid. Although there was individual variability, urinary concentrations and estimated dose levels decreased over the 10-week period. Mixed models demonstrated that 10% higher %BF was significantly associated with 4.42% higher 3-PBA concentrations and a 10% higher daily TEE was significantly associated with a 10.57% higher 3-PBA concentrations. Additional factors influencing exposure included sex, number of uniform launderings, and wear- time (hours per previous day).
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Pubmed ID:30292884
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Pubmed Central ID:PMC7976610
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Volume:299
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