Caffeine concentrations in mice plasma and testicular tissue and the effect of caffeine on the dominant lethal test

  • Aeschbacher H
  • Milon H
  • Wurzner H
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Abstract

Large groups of male Swiss mice received per os on average 100 mg caffeine per kg body weight per day for 1 or 8 weeks. The dominant lethal test was designed to achieve maximum sensitivity in order to detect any possible mutagenic effect. No mutagenic induction of dominant lethals, pre-implantation egg loss or depression of the fertility of females, caused by caffeine at the dose levels administered were observed. The half life of caffeine, which was between 2.5 and 3 h, was similar in plasma and testicular tissue. It was concluded that caffeine did not accumulate in the testicular tissue of mice. The maximum concentration of caffeine found was below 10 μg/g testicular tissue, which is about a 100 times lower than concentrations that cause chromosome aberrations in cultured mammalian cells. © 1978.

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Authors

  • H. U. Aeschbacher

  • H. Milon

  • H. P. Wurzner

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