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Antimutagenicity in Euglena gracilis

P Foltínová1, N Lahitová, L Ebringer

  • 1Institute of Molecular and Subcellular Biology, Comenius University, Bratislava, Slovak Republic.

Mutation Research
|April 1, 1994
PubMed
Summary

Standard antimutagens like ascorbic acid and alpha-tocopherol reduced genotoxicity in Euglena gracilis and Salmonella typhimurium bacteria. These compounds demonstrate protective effects against mutagens MNNG and furadantine.

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Area of Science:

  • Environmental toxicology
  • Microbiology
  • Biochemistry

Background:

  • N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and furadantine (Fu) are known genotoxic agents.
  • Antimutagens are compounds that reduce the mutagenic effects of genotoxins.
  • Euglena gracilis and Salmonella typhimurium are model organisms for genotoxicity testing.

Purpose of the Study:

  • To investigate the antimutagenic potential of standard compounds against MNNG and Fu.
  • To evaluate the efficacy of antimutagens in both a eukaryotic flagellate and bacterial strains.

Main Methods:

  • Genotoxicity assays were performed using Euglena gracilis exposed to MNNG and Fu.
  • Bacterial reverse mutation assays (Ames test) were conducted using Salmonella typhimurium strains TA97, TA100, and TA102.
  • The effects of ascorbic acid, alpha-tocopherol, chlorophyllin, and sodium selenite as antimutagens were assessed.

Main Results:

  • Standard antimutagens significantly decreased the genotoxic effects of MNNG and Fu in Euglena gracilis.
  • Ascorbic acid, alpha-tocopherol, and sodium selenite exhibited antimutagenic activity in the tested Salmonella typhimurium strains.
  • Chlorophyllin showed no significant antimutagenic effect on Salmonella typhimurium strain TA102.

Conclusions:

  • Standard antimutagens possess protective properties against genotoxic agents in both unicellular eukaryotes and bacteria.
  • The study validates the use of Euglena gracilis and Salmonella typhimurium for assessing antimutagenic activity.
  • These findings support the potential application of these antimutagens in mitigating genotoxic damage.

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