PMID- 1370114 OWN - NLM STAT- MEDLINE DCOM- 19920123 LR - 20190702 IS - 0027-5107 (Print) IS - 0027-5107 (Linking) VI - 278 IP - 1 DP - 1992 Jan TI - Genotoxicity of 1,3- and 1,6-dinitropyrene: induction of micronuclei in a panel of mammalian test cell lines. PG - 11-7 AB - 1,3-Dinitropyrene (1,3-DNP) and 1,6-dinitropyrene (1,6-DNP) were assessed for their potential to increase the frequencies of micronuclei in a panel of test cell lines consisting of H4IIEC3/G-, 5L, 5L/r-1,3-DNP1, 208F, V79, V79/r-1,6-DNP1, HepG2 and BWI-J cells, which have been partially characterized for their expression of xenobiotic metabolising enzymes. The micronuclei were analyzed for the presence or absence of kinetochores indicating the occurrence of aneuploidy or chromosome breakage, respectively. 1,3-DNP caused a substantial increase in the frequency of micronuclei only in V79 cells. 1,6-DNP was strongly genotoxic in lines H4IIEC3/G-, 208F, V79 and, to a minor degree, in 5L/r-1,3-DNP1. It caused the formation of kinetochore-positive as well as kinetochore-negative micronuclei in V79 cells but only of kinetochore-negative micronuclei in H4IIEC3/G- and 208F cells. 1,6-DNP-induced formation of micronuclei was paralleled by the appearance of multinucleated cells. Treatment of V79 cells with 1,3-DNP resulted in the same types of damage as treatment with 1,6-DNP, although considerably higher concentrations were required. The results show that 1,6-DNP can be highly genotoxic in mammalian cells, whereas, at least in the panel of test cell lines used, 1,3-DNP possesses only a low genotoxic activity. 1,3-DNP appears to be activated to genotoxic products in V79 cells by the same pathway(s) as 1,6-DNP. FAU - Roscher, E AU - Roscher E AD - Institut fur Toxikologie, GSF-Forschungszentrum fur Umwelt und Gesundheit, Neuherberg/Munich, F.R.G. FAU - Wiebel, F J AU - Wiebel FJ LA - eng PT - Journal Article PL - Netherlands TA - Mutat Res JT - Mutation research JID - 0400763 RN - 0 (Mutagens) RN - 0 (Pyrenes) RN - 66Q2ZUF83N (1,6-dinitropyrene) RN - D09D9L0924 (1,3-dinitropyrene) SB - IM MH - Animals MH - Carcinoma, Hepatocellular MH - Cell Line MH - Humans MH - Liver Neoplasms MH - Liver Neoplasms, Experimental MH - Micronucleus Tests MH - Mutagens/*pharmacology MH - Pyrenes/*pharmacology EDAT- 1992/01/01 00:00 MHDA- 1992/01/01 00:01 CRDT- 1992/01/01 00:00 PHST- 1992/01/01 00:00 [pubmed] PHST- 1992/01/01 00:01 [medline] PHST- 1992/01/01 00:00 [entrez] AID - 0165-1218(92)90280-D [pii] AID - 10.1016/0165-1218(92)90280-d [doi] PST - ppublish SO - Mutat Res. 1992 Jan;278(1):11-7. doi: 10.1016/0165-1218(92)90280-d.