title: Inhibition of diethylnitrosamine-induced strand breaks in liver DNA by disulfiram.
abstract: Disulfiram (DSF) delayed the appearance of diethylnitrosamine (DEN)-induced strand breaks in liver DNA of rats. The fragmentation of liver DNA produced by DEN was studied 4 and 24 h after administration of the carcinogen on alkaline sucrose gradients. A single dose of 500 mg/kg DSF given 1 h prior to carcinogen treatment delayed for at least 4 h the DEN--induced strand breaks in liver DNA. A single DSF pretreatment, however, did not protect against carcinogen-induced strand breaks when observed 24 h after DEN injection. It is possible that continuous administration of DSF might inhibit the DEN-produced damage of the genetic material.
mesh_terms: D000818:Animals; D004260:DNA Repair / Q000187:drug effects; D004052:Diethylnitrosamine / Q000009:adverse effects*; D004221:Disulfiram; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D008967:Molecular Biology; D009602:Nitrosamines / Q000009:adverse effects*; D051381:Rats
chemical_list: D009602:Nitrosamines; D004052:Diethylnitrosamine; D004221:Disulfiram