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Biomarkers of Sensitivity and Exposure in Washington State Pesticide Handlers
Journal article   Open access   Peer reviewed

Biomarkers of Sensitivity and Exposure in Washington State Pesticide Handlers

Jonathan N. Hofmann, Matthew C. Keifer, Harvey Checkoway, Anneclaire J. De Roos, Federico M. Farin, Richard A. Fenske, Rebecca J. Richter, Gerald van Belle and Clement E. Furlong
PARAOXONASES IN INFLAMMATION, INFECTION, AND TOXICOLOGY, v 660, pp 19-27
01 Jan 2010
PMID: 20221867
url
https://europepmc.org/articles/pmc3041670View
Accepted (AM)Open Access (License Unspecified) Open

Abstract

Life Sciences & Biomedicine Medicine, Research & Experimental Research & Experimental Medicine Science & Technology
Organophosphate (OP) and N-methyl-carbamate (CB) insecticides are widely used in agriculture in the US and abroad. These compounds which inhibit acetylcholinestersase (AChE) enzyme activity continue to be responsible for a high proportion of pesticide poisonings among US agricultural workers. It is possible that some individuals may be especially susceptible to health effects related to OP/CB exposure. The paraoxonase (PUN 1) enzyme metabolizes the highly toxic oxon forms of some OPs, and an individual's PON1 status may be an important determinant of his or her sensitivity to these chemicals. This chapter discusses methods used to characterize the PUN I status of individuals and reviews previous epidemiologic studies that have evaluated PON1-related sensitivity to OPs in relation to various health endpoints. It also describes an ongoing longitudinal study among OP-exposed agricultural pesticide handlers who are participating in a recently implemented cholinesterase monitoring program in Washington State. This study will evaluate handlers' PUN I status as a hypothesized determinant of butyrylcholinesterase (BuChE) inhibition. Such studies will be useful to determine how regulatory risk assessments might account for differences in PON1-related OP sensitivity when characterizing inter-individual variability in risk related to OP exposure. Recent work assessing newer and more sensitive biomarkers of OP exposure is also discussed briefly in this chapter.

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Collaboration types
Domestic collaboration
Web of Science research areas
Medicine, Research & Experimental
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