Salivary acetylcholinesterase as a biomarker for organophosphate exposure

Occupational Medicine
Vivian NgSin-Eng Chia

Abstract

Workers exposed to organophosphate (OP) pesticides are required to undergo periodic statutory medical surveillance in several countries. To study the relationship between serum, erythrocyte and saliva acetylcholinesterase (AChE) levels and to explore the use of salivary AChE as potential biomarker for OP exposure. A cross-sectional study was conducted on 19 healthy adult male lead-exposed workers who were undergoing six monthly statutory medical examination. Passive drool saliva samples were collected from each worker. Each blood sample was tested for serum and erythrocyte AChE, and each saliva sample was tested for AChE. Among the 19 subjects, the mean (+/-standard deviation) of salivary, erythrocyte and serum AChE/cholinesterase were 22.7 (+/-17.4), 17171 (+/-1467), 8861 (+/-1876) U/l, respectively. There was a moderate correlation between salivary and erythrocyte AChE (r = 0.42, P = 0.071), but not salivary and serum AChE (r = -0.17, P = 0.48). The level of AChE in saliva was approximately 1820 times lower than AChE in erythrocytes. It is probably not feasible to use saliva as a replacement for blood for the measurement of AChE levels. This is because of the much lower levels of AChE in saliva relative to erythrocytes, the w...Continue Reading

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Citations

Aug 13, 2013·BioMed Research International·Maria Giulia LionettoTrifone Schettino
Oct 13, 2011·Journal of Proteomics·Jasmine George, Yogeshwer Shukla
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Jul 22, 2017·Environmental Science and Pollution Research International·Graciela Eugenia BiancoJulio César De Luca

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