PURPOSES (a) To measure the urinary excretion of antineoplastic drugs of three patients during 48 h after the administration of cyclophosphamide (two patients) and 5-fluorouracil (one patient). (b) To evaluate environmental contamination with antineoplastic drugs via excreta of patients in the home setting. (c) To evaluate exposure of family members to antineoplastic drugs by measuring the drug...

The effect of dosage and pretreatment with phénobarbital or 2-diethylaminoethyl-2,2-diphenylvalerate on the binding of labeled cyclophosphamide and/or its metabolites to macromolecular constituents of the embryo and maternal liver in pregnant mice was studied under conditions nearly identical to those of previous studies of cyclophosphamide teratogenicity. Cyclophosphamide and/or its metabolit...

conclusions based on its effects, carnosol might be considered a source of drug, showing effective immunosuppression properties. further studies should be performed on carnosol to develop an effective immunosuppressive drug or coadjuvant for the treatment of disorders caused by an exaggerated or unwanted immune response. results results showed that three high doses of carnosol (0.8, 2.4 and 4 m...

Cytochrome P-450-catalyzed activation of cyclophosphamide to alkylating metabolites was studied in isolated rat liver microsomes and purified, reconstituted P-450 enzyme systems in order to identify the major enzymatic catalysts of drug activation in both uninduced and drug-induced liver tissue. P-450 form PB-4 (P-450 gene IIB1) activated cyclophosphamide with high efficiency [Vmax (app) = 18.2...

We present a case of antisynthetase syndrome whose predominant feature was fibrosing alveolitis and which may have been drug-induced. This responded well to steroids and cyclophosphamide.

One of the serious toxicities of cyclophosphamide chemotherapy is urotoxicity. In addition to causing leukopenia, high-dose cyclophosphamide caused both depression of hepatic microsomal enzyme activities and extensive urinary bladder damage, suggesting that a common biochemical mechanism may be responsible for both of these effects. Administration of 180 or 200 mg cyclophosphamide per kg to Wis...

INTRODUCTION The clinical outcome and therapeutic response to immunosuppressive agents vary among patients with lupus nephritis of different ethnic populations. Thus, we evaluated the efficacy of two established treatment protocols for lupus nephritis (low-dose versus standard-dose cyclophosphamide) in Puerto Ricans with systemic lupus erythematosus (SLE). METHODS A retrospective cohort of 49...

Antineoplastic drug resistance is a major obstacle to improved treatment of most adult cancers in humans. Novobiocin, an antibacterial agent which inhibits the eukaryotic topoisomerase II enzyme, increases the cytotoxicity of several alkylating agents in vitro by the formation of lethal DNA-DNA interstrand cross-links, perhaps by decreasing the repair of drug monoadducts. In murine tumors treat...