Biomarkers of exposure to polycyclic aromatic hydrocarbons (PAHs) and DNA damage: a cross-sectional pilot study among roofers in South Florida

BMJ Open
2012.0

Abstract

<jats:sec><jats:title>Objective</jats:title><jats:p>The main goal of this pilot study was to assess the technical and logistic feasibility of a future study. The research hypothesis is that occupational exposures to polycyclic aromatic hydrocarbons (PAHs) are associated with increased risk of DNA damage among roofers who work with hot asphalt.</jats:sec><jats:sec><jats:title>Design</jats:title><jats:p>This is a cross-sectional pilot study.</jats:sec><jats:sec><jats:title>Setting</jats:title><jats:p>The study included roofers from four different construction sites in Miami-Dade County, Florida.</jats:sec><jats:sec><jats:title>Participants</jats:title><jats:p>19 roofers were recruited (six Hispanics and 13 African–Americans, all male), all of whom were eligible (no history of cancer and no history of chronic diseases of kidneys or liver). All participants provided pre-shift samples and 18 provided post-shift samples. Samples of one participant were excluded from the final analyses as they were considered unreliable.</jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Levels of urinary PAH metabolites increased during 6 h of work. Linear regression models of post-shift metabolites included their pre-shift levels, post-shift urinary creatinine levels (for models of 1-OHPyr and 9-OHPhe), and skin burn due to contact with hot asphalt (for models of 1-OHPyr and 1-OHNap). Pre-shift levels of urinary 8-OHdG were not associated with any of the variables considered. For post-shift levels of 8-OHdG, however, post-shift 1-OHPyr (95% CI 0.091 to 0.788) and use of protective gloves (95% CI −1.57 to −0.61) during work explained 86.8% of its variation. Overall, highest levels of urinary PAH metabolites and of 8-OHdG were observed among workers who reported having skin burn and who did not use gloves during work.</jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p>Urinary 1-OHPyr is a promising predictor of oxidative DNA damage among roofers. Work-related skin burn and use of protective gloves appear to influence PAH exposure and DNA damage levels in this group, suggesting the importance of dermal absorption.</jats:sec>

Knowledge Graph

Similar Paper

Biomarkers of exposure to polycyclic aromatic hydrocarbons (PAHs) and DNA damage: a cross-sectional pilot study among roofers in South Florida
BMJ Open 2012.0
Blood Pyrrole–DNA Adducts Define the Early Tumorigenic Risk in Patients with Pyrrolizidine Alkaloid-Induced Liver Injury
Environmental Science &amp; Technology Letters 2021.0
Developing urinary pyrrole–amino acid adducts as non-invasive biomarkers for identifying pyrrolizidine alkaloids-induced liver injury in human
Archives of Toxicology 2021.0
Phthalate Exposure and Health-Related Outcomes in Specific Types of Work Environment
International Journal of Environmental Research and Public Health 2014.0
Clinical application of pyrrole–hemoglobin adducts as a biomarker of pyrrolizidine alkaloid exposure in humans
Archives of Toxicology 2021.0
Correlation Investigation between Pyrrole-DNA and Pyrrole-Protein Adducts in Male ICR Mice Exposed to Retrorsine, a Hepatotoxic Pyrrolizidine Alkaloid
Toxins 2022.0
New PAH derivatives functionalized by cyclic nitrone framework: Synthetic design, anti-proliferative activity and interaction with DNA
Bioorganic &amp; Medicinal Chemistry 2013.0
Studies on the polynuclear aromatic hydrocarbon content of carrots (Daucus carota)
Chemosphere 1991.0
Urinary methanol and formic acid as indicators of occupational exposure to methyl formate
International Archives of Occupational and Environmental Health 2000.0
Quantitation of DNA reactive pyrrolic metabolites of senecionine – A carcinogenic pyrrolizidine alkaloid by LC/MS/MS analysis
Journal of Food and Drug Analysis 2020.0