Regulatory and research issues related to cholinesterase inhibition.

Journal Article (Review;Journal Article)

Assessing the neurotoxic potential of organophosphate and carbamate pesticides should be greatly facilitated by the knowledge that the mechanism of action of these insecticides is presumed to be the inhibition of cholinesterase, the enzyme which controls the levels of neurotransmitter, acetycholine. Although the inhibition of cholinesterase activity is the recognized mechanism of action, many questions remain regarding the use of cholinesterase inhibition data as a critical effect for establishing risk of cholinesterase-inhibiting pesticides. Specifically, questions have arisen regarding whether blood cholinesterase inhibition correlates with inhibition in target tissues (e.g. brain or muscle) and whether cholinesterase inhibition in any tissue correlates with the adverse clinical and behavioral effects produced by exposure to cholinesterase-inhibiting pesticides. Studies in our laboratory indicate that blood cholinesterase inhibition in both acute and subchronic dosing regimens correlates with inhibition in other tissues, if measurements are taken at the appropriate times. Moreover, there is evidence in the literature and from our laboratory that cholinesterase inhibition correlates with the emergence and severity of clinical signs of poisoning by cholinesterase-inhibiting pesticides.

Full Text

Duke Authors

Cited Authors

  • Padilla, S

Published Date

  • September 1995

Published In

Volume / Issue

  • 102 / 1-2

Start / End Page

  • 215 - 220

PubMed ID

  • 7482556

Electronic International Standard Serial Number (EISSN)

  • 1879-3185

International Standard Serial Number (ISSN)

  • 0300-483X

Digital Object Identifier (DOI)

  • 10.1016/0300-483x(95)03050-p


  • eng