Pesticide Exposure Linked to DNA Damage in Agricultural Workers in Punjab, India

Strategic Insights -

Researchers from the Government Medical College, Patiala, Punjab, India, have published a new study on the genotoxic effects of pesticide exposure on agricultural workers in the region. The study found significant associations between genotoxicity and polymorphisms in DNA repair genes, suggesting potential biomarkers for susceptibility to DNA damage.

Key Takeaways:

  • The study included 450 subjects, comprising 225 agricultural workers exposed to complex mixtures of pesticides and 225 non-exposed controls from Punjab, North-West India.
  • The research found statistically significant epistatic gene interactions in DNA repair pathways, which may be used as biomarkers of susceptibility in pesticide-exposed agricultural workers.
  • The study identified associations between variant OGG1 326Ser/Cys genotype with XRCC1 194Arg/Trp and XRCC1 399Arg/Gln genotypes, and increased susceptibility to DNA damage.
  • XPC 939Gln/Gln genotype significantly interacted with XPC 499Ala/Val, XPD 312Asp/Asp, and XPD 715Gln/Gln variant genotypes to increase DNA damage susceptibility.
  • Among exposed XPF 415Gln/Gln individuals, DNA damage was significantly higher in those individuals who had variant XPG Asp/His and ERCC1 8092CA genotypes.
  • The study concluded that the observed epistatic gene interactions can be used as biomarkers of susceptibility for DNA damage in pesticide-exposed agricultural workers.

Statistics:

  • 450 subjects were included in the study, comprising 225 agricultural workers exposed to complex mixtures of pesticides and 225 non-exposed controls.
  • The study found statistically significant epistatic gene interactions in DNA repair pathways, which may be used as biomarkers of susceptibility in pesticide-exposed agricultural workers.
  • The research identified significant associations in 10 out of 12 examined gene interactions with increased susceptibility to DNA damage.
  • Among exposed individuals, DNA damage was significantly higher in those with variant XPG Asp/His and ERCC1 8092CA genotypes.

Sources:

  • Epistatic interactions in DNA repair genes as biomarkers of susceptibility for DNA damage in pesticide-exposed agricultural workers of Punjab, North-West India. Mutation Research-genetic Toxicology and Environmental Mutagenesis, 2025;906:503880.
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  • Findings from Government Medical College in Chemicals and Chemistry Reported (Epistatic interactions in DNA repair genes as biomarkers of susceptibility for DNA damage in pesticide-exposed agricultural workers of Punjab, North-West India). Agriculture Week. September 18, 2025; p 693.