Cholinesterase Levels Among Agricultural Pilots and Mixer/Loaders

Abstract

ABSTRACT Agricultural pilots and mixer/loaders are potentially exposed to pesticides, but few studies have assessed the extent of their exposure. This study assessed the work habits and measured the cholin-esterase levels of a group of agricultural pilots and mixer/loaders in a five-county area of northeastern Arkansas, a cotton-growing area. Work habits were ascertained through questionnaires. Cholinesterase levels were measured at baseline and during the active spraying season. Pyrethroids were the predominant pesticides used, although most respondents reported at least some organophosphate use. Most reported having received pesticide training, but few used personal protective equipment. There was no decline in acetylcholinesterase (AChE) levels associated with pesticide use. These results indicate that agricultural pilots and mixer/loaders in northeastern Arkansas show no evidence of overexpo-sure to AChE inhibitors, suggesting that current pesticide use patterns and work practices are successfully protecting them.