Record Display for the EPA National Library Catalog


Main Title Mutagenicity and Clastogenicity of Proflavin in L5178Y/TK(+/-)-3.7.2.C Cells.
Author DeMarini, D. M. ; Brock, K. H. ; Doerr, C. L. ; Moore, M. M. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;Environmental Health Research and Testing, Inc., Research Triangle Park, NC.
Year Published 1988
Report Number EPA/600/J-88/017;
Stock Number PB88-219779
Additional Subjects Mutations ; Genetic ; Chromosome abnormalities ; Reprints ; Mutagenicity ; Clastogenicity ; Proflavin ; Genetic mutations ; Biological effects
Library Call Number Additional Info Location Last
NTIS  PB88-219779 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
The paper evaluated the ability of proflavin to induce specific-locus mutations at the heterozygous thymidine kinase (tk) locus of L5178Y/TK+/- -3.7.2.C mouse lymphoma cells, which permit the recovery and classification of mutants due to single-gene or chromosomal mutation. Proflavin was highly mutagenic at the tk locus, producing 724-965 TK mutants/10(6); survivors. The potent clastogenicity of proflavin was confirmed by cytogenetic analysis for chromosomal aberrations. These results lead to the conclusion that proflavin induces few single-gene mutations in mammalian cells; instead, it is a potent clastogen and produces primarily chromosomal mutations. The authors discuss the possible involvement of DNA topoisomerase II in the clastogenic mechanism of proflavin.