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Mutagenicity and cytotoxicity of 2-chlorobenzylidene malonitrile (CS) and metabolites in V79 Chinese hamster cells.
Arch. Toxicol. 63, 314-319 (1989)
The genotoxicity of the sensory irritant 2-chlorobenzylidene malonitrile (CS) to V79 Chinese hamster cells was investigated using the induction of gene mutations, micronuclei and DNA repair synthesis as biological endpoints. CS efficiently induced micronuclei and mutants resistant to 6-thioguanine in these cells, but it did not elicit DNA repair synthesis. Induction of micronuclei and mutants showed very similar courses of concentration dependence, suggesting that both events were caused by the same mechanism. The hydrolysis products of CS, o-chlorobenzaldehyde and malononitrile dit not induce micronuclei and were much less cytotoxic than CS. The observation of heritable genetic changes in cells exposed to CS in the absence of detectable DNA damage suggests that the genetic effects of CS are not caused by an interaction of the compound or its hydrolysis products with DNA. It appears more likely that the mutagenic activity is the consequence of effects of CS on the mitotic apparatus of the cells causing chromosomal aneuploidy.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
o-Chlorobenzylidene malonitril;e CS; V79 cells; Mutagenicity
Sprache
englisch
Veröffentlichungsjahr
1989
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0340-5761
e-ISSN
1432-0738
Zeitschrift
Archives of Toxicology
Quellenangaben
Band: 63,
Heft: 4,
Seiten: 314-319
Verlag
Springer
Begutachtungsstatus
Peer reviewed
Erfassungsdatum
1989-12-31