Journal of Genetics

, Volume 96, Issue 1, pp 187–201 | Cite as

CYP/PON genetic variations as determinant of organophosphate pesticides toxicity

  • A. K. JAIN


In the present scenario of increased accumulation of pesticides in the environment, it is important to understand its impact on human health. The focus is on gene–environment interaction, highlighting the consequences and factors that may halt the biotransformation of some pesticides and change their actual dose response curve due to mixed exposure to pesticides. The paraoxonase and cytochrome P450 gene families are involved in the metabolism of oxon derivate (toxic than its parent compound) of organophosphate pesticides, thus, mutations in these genes may impact the metabolic outcome of pesticides and subsequent health hazards. The complex multi gene–environment interaction and one gene – one risk factor are two different aspects to understand the potential health effect related to environmental exposure studies. The genetic polymorphisms are associated with varying levels of risk within the population, as gene products of varied genotype alter the biotransformation of exogenous/endogenous substrates. This paper is aimed to review the impact of endogenous and exogenous factors on a mechanistic pathway of organophosphate pesticide biotransformation and various risk associated with it among the human population. Understanding the genetic polymorphism of genes involved in pesticide metabolism and highlighting the gene isoform dependent interindividual differences to metabolize particular pesticides may help us to unravel the reasons behind differential toxicity for pesticides exposure than expected.


organophosphate pesticides xenobiotics cytochrome P450 paraoxonase genetic polymorphisms. 



We thank Vice-Chancellor of CUPB for the support. The work was supported by CUPB-RSM and UGC start-up grants. GK is also thankful to UGC for Moalana Azad National Fellowship. We also thank Dr Alpna Saini, Centre for Classical and Modern Languages, Central University of Punjab, for editing and improving the language.


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© Indian Academy of Sciences 2017

Authors and Affiliations

  1. 1.Centre for Environmental Science and TechnologyCentral University of PunjabBathindaIndia
  2. 2.Centre for Human Genetics and Molecular MedicineCentral University of PunjabBathindaIndia

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