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Related Experiment Videos

Diallylsulfide attenuates asbestos-induced genotoxicity.

Mohtashim Lohani1, Santosh Yadav, Dietmar Schiffmann

  • 1Industrial Toxicology Research Centre, Division of Fibre Toxicology, Post Box No. 80, M.G. Marg, Lucknow 226 001, India.

Toxicology Letters
|April 17, 2003
PubMed
Summary

Diallyl sulfide (DAS), a garlic compound, protected human cells from asbestos-induced genotoxicity by reducing micronuclei formation. However, higher concentrations of DAS were less effective, indicating a dose-dependent protective effect against asbestos-related DNA damage.

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Area of Science:

  • Environmental Health
  • Toxicology
  • Cell Biology

Background:

  • Asbestos fibers induce genotoxicity via reactive oxygen species (ROS) and mechanical disruption of mitosis, leading to DNA damage.
  • Endogenous antioxidant systems, like glutathione, are crucial for cellular protection against oxidative stress.
  • Diallyl sulfide (DAS), a compound from garlic, is known for its antioxidant properties and potential to mitigate xenobiotic toxicity.

Purpose of the Study:

  • To investigate the protective effects of diallyl sulfide (DAS) against asbestos-induced genotoxicity in human mesothelial cells (HMC).
  • To evaluate the dose-dependent efficacy of DAS in preventing asbestos-related DNA damage, specifically micronuclei formation.

Main Methods:

  • Human mesothelial cells (HMC) were exposed to crocidolite and chrysotile asbestos fibers.

Related Experiment Videos

  • Cells were simultaneously treated with varying concentrations of diallyl sulfide (DAS) (5 and 10 microM).
  • The micronucleus (MN) assay was employed to assess genotoxicity after 48 and 66 hours of incubation.

    • Main Results:

    • Asbestos exposure significantly induced genetic damage, evidenced by increased micronuclei formation in HMC.
    • Treatment with 5 microM DAS significantly reduced asbestos-induced micronuclei formation.
    • A significant reduction in genotoxicity was not observed with 10 microM DAS, suggesting a specific effective concentration range.

    Conclusions:

    • Diallyl sulfide (DAS) demonstrates protective effects against asbestos-induced genotoxicity in human mesothelial cells at appropriate concentrations.
    • The findings highlight the potential of DAS as a chemopreventive agent against asbestos-related cellular damage.
    • The study underscores the importance of dose optimization for therapeutic compounds targeting environmental toxin-induced cellular damage.