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  • 1
    ISSN: 1569-8041
    Keywords: AIDS ; chemotherapy ; G-CSF ; HIV-1 viral replication ; non-Hodgkin's lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: The optimal treatment of AIDS-related NHL (ARL) has yet to be defined. The purpose of this study was 1) to evaluate the efficacy and toxicity of the CNOP-regimen (cyclophosphamide, mitoxantrone, vincristine, and prednison) in combination with G-CSF; and 2) to study the effect of this regimen on HIV-1 viral replication. Patients and methods: A phase II study was performed in 21 previously untreated patients with ARL. Results: Based on intention to treat, the response rate was 43%: four complete and five partial remissions. Median survival was only five months. Only one patient had an opportunistic infection during treatment; three patients had localized infections and one episode of septicaemia was seen. Remarkably, during treatment, in 94% of cases p24 antigen levels either remained undetectable or showed a substantial decrease, even though antiretroviral therapy had been discontinued just prior to the first cycle of chemotherapy in all patients. HIV-1 RNA load decreased or remained unchanged in 82% of patients and increased in three patients. Conclusions: Our data demonstrate, 1) that the CNOP-regimen in combination with G-CSF, although associated with a low risk of both opportunistic and bacterial infections, can not be recommended in the treatment of ARL; but 2) that G-CSF can be used safely to sustain haematopoiesis in patients with ARL treated with chemotherapy.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Combined gas chromatography-mass spectrometry and isotope labeling techniques have been employed to demonstrate that the carboxamide nitrogen atom in 2-carboxamido-5-isopropoxycarbonylaminobenzimidazole, a metabolite of 2-thiazolyl-5-isopropoxycarbonylaminobenzimidazole (cambendazole), is derived wholly from the parent drug. [15N] Thiazole-labeled cambendazole was administered to a rat and the metabolite isolated from urine. Trideutero-2-carboxamido-5-isopropoxycarbonylaminobenzimidazole was employed as a carrier to isolate the metabolite in sufficient purity for isotope ratio measurements using multiple ion detection. The metabolite was converted to its tetramethyl derivative by on-column reaction with trimethylanilium hydroxide to permit satisfactory gas chromatography.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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