Abstract:
:The combinations of amphotericin B (AmB) with 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) or 2-cyclohexyl isocyanate, the carbamoylating decomposition product of CCNU, were more potent in lysing HL-60 cells than the combinations of AmB with 1,3-bis-(2-chloroethyl)-1-nitrosourea (BCNU) or 2-chloroethyl isocyanate, the carbamoylating decomposition product of BCNU. The noncarbamoylating nitrosoureas 1-(2-chlorethyl)-3-(2,6-dioxo-3-piperydyl)-1-nitrosourea and 2-[3-(2-chloroethyl)-3-nitrosoureido]-D-glucopyranose did not alter AmB effects on HL-60 cells. These results indicate that the potentiating action of CCNU and BCNU on the lytic effects of AmB is associated with the carbamoylating activity of these nitrosoureas. It is likely that the greater carbamoylating activity of CCNU, compared to BCNU, is responsible for the differences in potency of the two AmB-drug combinations.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Brajtburg J,Elberg S,Schechtman KB,Medoff Gsubject
Has Abstractpub_date
1990-06-01 00:00:00pages
3274-8issue
11eissn
0008-5472issn
1538-7445journal_volume
50pub_type
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