Safety and Tolerance of Zidovudine With Probenecid and the Effect of Probenecid on Zidovudine Pharmacokinetics Over Four Weeks
Probenecid
+ Zidovudine
Infections transmises par le sang+13
+ Maladies génito-urinaires
+ Maladies Génitales
Étude thérapeutique
Résumé
Because AZT is eliminated quickly from the body, it must be taken frequently. A previous study showed that probenecid slowed the elimination of AZT without side effects, but that study lasted only 5 days. This study is to see whether this effect continues for 1 month and whether the continuation of probenecid and AZT is free of side effects over 1 month. Patients are hospitalized overnight on three separate occasions. On the first admission, AZT is administered every 4 hours. On the second day, 15 blood samples are taken to determine how fast the AZT enters and is removed from the bloodstream (pharmacokinetics). On the second day, after all the blood specimens have been collected, patient starts taking probenecid by mouth every 8 hours, and is discharged from the research unit. The AZT dose is then taken every 8 hours. One week later and again 3 weeks after that, patient is readmitted overnight and the blood sampling to measure AZT levels is repeated. AMENDED: 8 additional patients will be enrolled using the same doses of AZT but a lower dose of probenecid.
Protocole
Cette section fournit des détails sur le plan de l'étude, y compris la manière dont l'étude est conçue et ce qu'elle évalue.16 participants à inclure
Nombre total de participants que l'essai clinique vise à recruter.Traitement
Éligibilité
Les chercheurs recherchent des patients correspondant à une certaine description appelée critères d'éligibilité : état de santé général ou traitements antérieurs du patient.Tout sexe
Le sexe biologique des participants éligibles à s'inscrire.À partir de 18 ans
Tranche d'âge des participants éligibles à participer.Volontaires sains non autorisés
Indique si les individus en bonne santé et ne présentant pas la condition étudiée peuvent participer.Conditions
Pathologie
Critères
Inclusion Criteria Concurrent Medication: Allowed: Interferon. Aerosolized pentamidine for Pneumocystis carinii pneumonia (PCP) prophylaxis. Concurrent Treatment: Allowed: Radiation for skin lesions. Patients with symptomatic HIV infection taking zidovudine (AZT) five or six times a day as therapy. Includes patients with AIDS who have history of cytologically confirmed Pneumocystis carinii pneumonia (PCP), patients with advanced AIDS related complex (ARC), and HIV antibody positive patients. Patients must be able to give written informed consent. Exclusion Criteria Co-existing Condition: Patients with the following are excluded: Allergy to probenecid. Any underlying medical condition sufficient, in the investigator's opinion, to prevent adequate compliance with study therapy. History of urinary tract urate stones or gout. Becoming acutely ill, unstable, or febrile. Concurrent Medication: Excluded: Methotrexate. Antiretroviral drugs. Ganciclovir. Amphotericin. Experimental drugs. Isoniazid. Pyrazinamide. Flucytosine. Intravenous pentamidine. Dapsone. Fansidar. Antineoplastic drugs not specifically allowed. Trimethoprim / sulfamethoxazole. Valproic acid. Opiates. Rifampin. Sulfonylureas. Concurrent Treatment: Excluded: Radiation not specifically allowed. Patients with the following are excluded: Allergy to probenecid. Any underlying medical condition sufficient, in investigator's opinion, to prevent adequate compliance with study therapy. History of urinary tract urate stones or gout. Becoming acutely ill, unstable, or febrile.
Centres d'étude
Ce sont les hôpitaux, cliniques ou centres de recherche où l'essai est conduit. Vous pouvez trouver le site le plus proche de vous ainsi que son statut.Cette étude comporte 2 sites
Johns Hopkins Hosp
Baltimore, United States