Genotoxicity and Cytotoxicity among Pesticide- Exposed Workers: A Systematic Review and Meta- Analysis
DOI:
https://doi.org/10.33192/smj.v78i3.279093Keywords:
Carcinogen, Farmer, Micronucleus, PesticideAbstract
Objective: To provide updated evidence on genotoxicity and cytotoxicity among workers occupationally exposed to pesticides.
Materials and Methods: This systematic review and meta-analysis followed PRISMA guidelines. Studies assessing micronuclei and cytotoxicity biomarkers in occupationally pesticide-exposed workers were included. Pooled analyses used Mantel-Haenszel fixed- and random-effects models, and results were expressed as SMDs with 95% confidence intervals (CIs). The protocol was registered in PROSPERO (CRD42021279189).
Results: Micronucleus frequencies were significantly higher in lymphocytes (SMD 1.59; 95% CI 0.97–2.20; p<0.001; I2=96%) and buccal cells (SMD 1.20; 95% CI 0.67–1.73; p<0.00001; I2=97%) among exposed workers. Binucleated cells were also increased in lymphocytes (SMD 2.51; 95% CI 1.01–4.02; p<0.001; I2=98%) and buccal cells (SMD 0.56; 95% CI 0.04–1.08; p=0.03; I2=96%). No significant difference was observed for CBPI (SMD –0.18; 95% CI –0.90–0.54; p=0.63; I2=96%).
Conclusion: Occupational pesticide exposure is associated with increased micronucleus and binucleated cell frequencies, although high heterogeneity and potential confounding factors limit certainty. No significant association was found for CBPI. Subgroup analyses showed no sex-related differences, while concurrent smoking appeared to amplify genotoxic markers. The available evidence supports a protective effect of appropriate personal protective equipment against pesticide-induced genotoxicity.
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