title: The metabolism of N-nitrosobis(2-oxopropyl)amine by microsomes and hepatocytes from Fischer 344 rats.
abstract: The metabolism of N-nitrosobis(2-oxopropyl)amine (BOP) was examined in microsomes from uninduced F-344 rats. Even when the conditions were varied, no metabolism of this compound was detected. On the other hand, freshly isolated hepatocytes from F-344 rats metabolized BOP efficiently to CO2. The kinetics of conversion showed there were at least two components. The high affinity component had a Km of 0.13 mM while the lower had a Km of 1.3 mM. As products of the metabolism, N-nitroso(2-hydroxypropyl)(2-oxopropyl)-amine (HPOP) and N-nitrosobis(2-hydroxypropyl)amine (BHP) were found whereas little acetol and no N-nitrosomethyl-2-oxopropylamine (MOP) were detected.
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D008099:Liver / Q000378:metabolism*; D008297:Male; D051379:Mice; D008862:Microsomes, Liver / Q000378:metabolism*; D009602:Nitrosamines / Q000378:metabolism*; D051381:Rats; D011916:Rats, Inbred F344
chemical_list: D002273:Carcinogens; D009602:Nitrosamines; C031443:N-nitrosobis(2-oxobutyl)amine