N,N'-Bis(2-chloroethyl)-N-nitrosourea (BCNU) is a sub strate for a microsomal enzyme of mouse liver. The reaction requires NADPH, and the product is 1,3-bis(2-chloro ethyl)urea. This activity is also found in mouse lungs but not in several other tissues. With reaction conditions under which BCNU is not chemically degraded, the Km for BCNU with liver microsomes is 1.7 mM; nicotine is a competiti...

Bifunctional alkylating agents are known to cross-link DNA by simultaneously alkylating two guanine residues located on opposite strands. Despite this apparent requirement for bifunctionality, 1-(2-chloroethyl)-1-nitrosoureas bearing a single alkylating function were found to cross-link DNA in vitro. Cross-linking was demonstrated by showing inhibition of alkali-induced strand separation. Exten...

Chlorozotocin is a chloroethyl nitrosourea with a glucose carrier that has curative activity for the murine L1210 leukemia, but is nonmyelosuppressive in mice. To determine the mechanism for this unique property of reduced bone marrow toxicity, comparative studies were conducted with chlorozotocin and CCNU, a myelotoxic chloroethyl nitrosourea. Suspensions of L1210 leukemia and murine bone marr...

In the present study, tenorite (CuO) nanoparticles have been assayed for their catalytic properties. The decontamination reaction of chloro ethyl ethyl sulfide (CEES) as an surrogate of sulfur mustard simulant have been accomplished on the surface of CuO NPs with different weight ratios at ambient temperature and monitored by Gas chromatography equipped with Flame ionization detector (GC-FID) a...

2-[N'-2-Pyrimidyl-aminobenzenesulfonamido] ethyl 4-bis(2-chloroethyl) aminophenyl butyrate has been prepared by reaction of chlorambucil with sulfadiazine derivative. Schiffs base has been used as the protective group of the aromatic amine in the synthesis. It can be completely removed by the irradiation of 365 nm UV light at room temperature. The title compound exhibits a high antitumor activi...

DNA is a major cellular target of the vesicant chemical warfare agent sulfur mustard (SM, bis-(2-chloroethyl) sulfide). Others and we have proposed a possible role of apoptosis in SM vesication. Our results suggest that in SM-exposed human epidermal keratinocytes (HEK), DNA damage, DNA repair, and apoptosis may be interdependent. In HEK, SM causes cell death accompanied by caspase-3 activation ...