Mitigation by vitamin C of the genotoxic effects of nicotine in mice, assessed by the comet assay and micronucleus induction.

Mutat Res

Laboratório de Genética Toxicológica, Universidade Luterana do Brasil, Canoas, RS, Brazil.

Published: May 2012

AI Article Synopsis

  • * Researchers studied how vitamin C, an antioxidant, affects nicotine's genotoxic effects in mice using specific tests to measure DNA damage.
  • * Mice treated with vitamin C 24 hours before being exposed to nicotine showed significant protection against DNA damage caused by nicotine.

Article Abstract

Nicotine has been reported to cause acute toxicity and to present long-term risks, such as chromosomal damage and genetic instability. The genotoxicity of nicotine may be mediated partly by an oxidative mechanism. We have evaluated the effects of the antioxidant vitamin C on nicotine-induced genotoxicity in mice. The comet assay and the micronucleus test were used to assess the effects of nicotine (15mg/kg) at different exposure times (2, 4, and 24h in the comet assay; 24h in the micronucleus test). Pretreatment with vitamin C 24h before nicotine exposure strongly protected mice against nicotine-induced DNA damage.

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http://dx.doi.org/10.1016/j.mrgentox.2012.01.008DOI Listing

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