PMID- 4022037 OWN - NLM STAT- MEDLINE DCOM- 19850904 LR - 20190702 IS - 0027-5107 (Print) IS - 0027-5107 (Linking) VI - 151 IP - 1 DP - 1985 Aug TI - DNA damage induced by nitropyrenes in primary mouse hepatocytes and in rat H4-II-E hepatoma cells. PG - 137-46 AB - The capacity of nitropyrenes to cause DNA damage in primary mouse hepatocytes (C57BL/6N mice) and rat H4-II-E hepatoma cells was studied by estimating single-strand breaks using the alkaline elution technique. 1-Nitropyrene (10-200 microM) caused clear dose-dependent increases in DNA strand breaks in both cell types, whereas no increase in DNA strand breaks was observed in hepatocytes treated with 1.3-, 1,6-, 1,8-dinitropyrene, 1,3,6-trinitropyrene and 1,3,6,8-tetranitropyrene under standard assay conditions (5-20 microM 30-min incubation). However, 1,8-dinitropyrene (1,8-DNP) caused dose-dependent increases in DNA strand breaks when incubated with the H4-II-E cells for 48 h, while no single-strand breaks were observed following treatment with 1,6-dinitropyrene (1,6-DNP) under the same conditions. Neither 1,6-DNP nor 1,8-DNAP induced DNA crosslinks in the H4-II-E cells. These data indicate that substrate specificity exists in the metabolic activation of nitropyrenes in murine liver. FAU - Moller, M E AU - Moller ME FAU - Thorgeirsson, S S AU - Thorgeirsson SS LA - eng PT - Journal Article PL - Netherlands TA - Mutat Res JT - Mutation research JID - 0400763 RN - 0 (Cross-Linking Reagents) RN - 0 (Pyrenes) RN - 9007-49-2 (DNA) SB - IM MH - Animals MH - Cells, Cultured MH - Cross-Linking Reagents MH - DNA/genetics MH - Liver/drug effects MH - Liver Neoplasms, Experimental/genetics MH - Mice MH - Mutation/*drug effects MH - Pyrenes/*toxicity MH - Rats EDAT- 1985/08/01 00:00 MHDA- 1985/08/01 00:01 CRDT- 1985/08/01 00:00 PHST- 1985/08/01 00:00 [pubmed] PHST- 1985/08/01 00:01 [medline] PHST- 1985/08/01 00:00 [entrez] AID - 0027-5107(85)90192-7 [pii] AID - 10.1016/0027-5107(85)90192-7 [doi] PST - ppublish SO - Mutat Res. 1985 Aug;151(1):137-46. doi: 10.1016/0027-5107(85)90192-7.