PMID- 8901921 OWN - NLM STAT- MEDLINE DCOM- 19961206 LR - 20190819 IS - 0300-483X (Print) IS - 0300-483X (Linking) VI - 113 IP - 1-3 DP - 1996 Oct 28 TI - Cytogenetic effects of butadiene metabolites in rat and mouse splenocytes following in vitro exposures. PG - 336-40 AB - As a first step in investigating the genotoxic effects of the principal metabolites of 1,3-butadiene (BD) in both rats and mice, splenocytes (which have little mixed function oxidase activity) from each specimen were exposed to a series of concentrations of either 3,4-epoxy-1-butene (EB) (20 to 931 microM) or 1,2:3,4-diepoxybutane (DEB) (2.5 to 160 microM) for 1 h. The splenocytes were then washed, cultured, and stimulated to divide with concanavalin A, and metaphases were analyzed for the induction of sister chromatid exchanges (SCEs) and chromosome aberrations (CAs). In addition, cells from some experiments were taken after exposure but before culture, and subjected to the single cell gel (SCG) assay to measure DNA damage in the form of DNA strand breakage and/or alkaline-labile sites. Initial studies indicate that EB does not induce cytogenetic damage in either rat or mouse G0 splenocytes. However, DEB was an extremely potent SCE- and CA-inducer in both species with no species differences apparent. Neither DEB nor EB produced any statistically significant DNA-damaging effects as measured by the SCG assay. FAU - Kligerman, A D AU - Kligerman AD AD - U.S. Environmental Protection Agency, Environmental Carcinogenesis Division, Research Triangle Park, NC 27711, USA. FAU - Doerr, C L AU - Doerr CL FAU - Milholland, V S AU - Milholland VS FAU - Tennant, A H AU - Tennant AH LA - eng PT - Journal Article PL - Ireland TA - Toxicology JT - Toxicology JID - 0361055 RN - 0 (Epoxy Compounds) RN - 0 (Mutagens) RN - 478ERR5NKR (3,4-epoxy-1-butene) RN - 60OB65YNAB (diepoxybutane) SB - IM MH - Animals MH - Cell Cycle/drug effects MH - Cells, Cultured MH - *Chromosome Aberrations MH - Epoxy Compounds/*toxicity MH - Male MH - Mice MH - Mutagens/*toxicity MH - Rats MH - *Sister Chromatid Exchange MH - Species Specificity MH - Spleen/cytology/drug effects EDAT- 1996/10/28 00:00 MHDA- 1996/10/28 00:01 CRDT- 1996/10/28 00:00 PHST- 1996/10/28 00:00 [pubmed] PHST- 1996/10/28 00:01 [medline] PHST- 1996/10/28 00:00 [entrez] AID - 0300-483X(96)03469-5 [pii] AID - 10.1016/0300-483x(96)03469-5 [doi] PST - ppublish SO - Toxicology. 1996 Oct 28;113(1-3):336-40. doi: 10.1016/0300-483x(96)03469-5.