Induction of sister-chromatid exchanges and chromosome aberrations in human peripheral lymphocytes by
Mutation Research
|November 1, 1984
Abstract:
The genotoxicity of 2,4,7-trinitro-9-fluorenone (TNF) was investigated using the sister-chromatid exchange (SCE) and chromosome aberration assay systems with human peripheral lymphocytes. The SCE frequency increased from the control value of 9.45 to 27.80 (mean of 50 cells scored from each of two donors) after the lymphocytes were treated with the highest dose of TNF (3.0 microgram/ml). The results of the chromosome aberration experiment show that TNF induced more than a 4-fold increase in aberrations in each donor. The results, which indicate that TNF is clastogenic, add further evidence that this compound is potentially genotoxic to exposed populations.
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Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...


