PMID- 15739032 OWN - NLM STAT- MEDLINE DCOM- 20050603 LR - 20131121 IS - 0028-2685 (Print) IS - 0028-2685 (Linking) VI - 52 IP - 1 DP - 2005 TI - Chromosome damage induced by benzene after the use of conventional and FISH chromosome painting. PG - 79-84 AB - The cytogenetic effects of in vitro exposure to benzene were investigated in cultured bovine peripheral lymphocytes. Stable and unstable chromosome aberrations (CA) and sister chromatid exchanges (SCE) were examined. Cultures of lymphocytes from two healthy donors were treated with benzene at concentrations of 5, 10, 50, 100, 500 and 1000 micromol.l-1 for the last 24 hours and for 2 hours of cultivation, both without and with metabolic activation (S9). In the CA assays with conventional Giemsa staining for 24 hours without metabolic activation, no dose-dependence in the induced chromosome aberration was achieved. A significant elevation in the induction of CA was found only after the application of benzene at a dose of 100 micromol.l-1 (p<0.01). Similar results were observed using fluorescence in situ hybridization (FISH) method for the detection both of non-stable and persistent chromatid-type aberrations and in the SCE assay for 24 hours without S9. All the lower and higher concentrations tested have no positive influence on CA and SCE induction. In experiments with S9 a significant increase in CAs, and a dose-dependence was achieved after exposure to benzene for 2 hours at concentrations ranging from 50 to 500 micromol.l-1 (p<0.05 and p<0.01, respectively). FAU - Sivikova, K AU - Sivikova K AD - Institute of Genetics, University of Veterinary Medicine, 04181 Kosice, Slovak Republic. sivikova@uvm.sk FAU - Holeckova, B AU - Holeckova B FAU - Dianovsky, J AU - Dianovsky J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Slovakia TA - Neoplasma JT - Neoplasma JID - 0377266 RN - J64922108F (Benzene) SB - IM MH - Animals MH - Benzene/*toxicity MH - Cattle MH - Cell Culture Techniques MH - Chromosome Aberrations/*chemically induced MH - Chromosome Painting MH - DNA Damage/*drug effects MH - Dose-Response Relationship, Drug MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphocytes MH - Sister Chromatid Exchange EDAT- 2005/03/02 09:00 MHDA- 2005/06/04 09:00 CRDT- 2005/03/02 09:00 PHST- 2005/03/02 09:00 [pubmed] PHST- 2005/06/04 09:00 [medline] PHST- 2005/03/02 09:00 [entrez] PST - ppublish SO - Neoplasma. 2005;52(1):79-84.