Primary Objective: To define the impact of nelfinavir (given at 1250mg bid as part of a combination antiretroviral regimen) on peak levels and area under the curve for rifabutin and the rifabutin metabolite, 25-O-desacetyl rifabutin when rifabutin is given at 300 mg bi-weekly as part of tuberculosis chemotherapy. Secondary Objectives: To compare the pharmacokinetics of nelfinavir given twice daily at 1250 mg bid with twice-weekly isoniazid and rifabutin to the pharmacokinetics of nelfinavir 1250 mg twice-daily in historical HIV-infected patients not receiving isoniazid and rifabutin. To evaluate the correlation between pharmacokinetic parameters of rifabutin and 25-O-desacetyl rifabutin and the occurrence of toxicity attributed to rifabutin in patients with HIV-related tuberculosis. To define detailed pharmacokinetics of isoniazid given at 15mg/kg or 900 mg in patients with HIV-related tuberculosis. To attempt to derive optimal sampling times for nelfinavir and rifabutin pharmacokinetic studies.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
20
Central Arkansas Veterans Health System
Little Rock, Arkansas, United States
LA County/USC Medical Center
Los Angeles, California, United States
University of California, San Francisco
San Francisco, California, United States
Denver Department of Public Health and Hospitals
Denver, Colorado, United States
Washington, D.C. VAMC
Washington D.C., District of Columbia, United States
Chicago VA Medical Center (Lakeside)
Chicago, Illinois, United States
Hines VA Medical Center
Hines, Illinois, United States
Johns Hopkins University School of Medicine
Baltimore, Maryland, United States
Boston Medical Center
Boston, Massachusetts, United States
New Jersey Medical School
Newark, New Jersey, United States
...and 13 more locations
Impact of nelfinavir (given at 1250mg bid as part of a combination antiretroviral regimen) on area under the curve for rifabutin and 25-O-desacetyl rifabutin when rifabutin is given 300 mg bi-weekly as part of tuberculosis chemotherapy.
To compare the pharmacokinetics of nelfinavir given twice daily at 1250 mg bid with twice-weekly isoniazid and rifabutin to the pharmacokinetics of nelfinavir 1250 mg twice-daily in historical HIV-infected patients not receiving isoniazid and rifabutin.
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