Influence of Probenecid and Quinine on the Pharmacokinetics of Azidothymidine

October 27, 2021 updated by: National Institute of Allergy and Infectious Diseases (NIAID)

Part I studies the effect of quinine on how zidovudine (AZT) is used by the body and eliminated through the kidneys in HIV infected patients. Part II studies the effect of probenecid and quinine on the same aspects.

Because AZT leaves the bloodstream quickly, patients must take the drug frequently to keep adequate amounts in their bodies. Probenecid and quinine may slow down the rate at which AZT leaves the body. Therefore, taking these drugs along with AZT may reduce the amount of AZT needed for treatment.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Because AZT leaves the bloodstream quickly, patients must take the drug frequently to keep adequate amounts in their bodies. Probenecid and quinine may slow down the rate at which AZT leaves the body. Therefore, taking these drugs along with AZT may reduce the amount of AZT needed for treatment.

In part I, four patients who are now receiving AZT at the usual dose take part in pharmacokinetic studies (how much of the drug enters the blood stream, what happens to the drug in the body, and how it leaves the body) of AZT defined after a dose while at steady state and then again after a new steady state has been reached following the addition of quinine sulfate. Part II studies the pharmacokinetics of AZT in eight patients receiving AZT at 1 of 2 doses and then at the lower dose of AZT plus probenecid with or without quinine.

Study Type

Interventional

Enrollment

12

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Maryland
      • Baltimore, Maryland, United States, 21287
        • Johns Hopkins Hosp

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria

Patients must:

  • Have symptomatic HIV infection.
  • Be taking zidovudine (AZT), 100 or 200 mg, 5 or 6 x/day.

Allowed:

  • History of Pneumocystis carinii pneumonia (PCP).
  • Advanced AIDS related complex (ARC).
  • HIV antibody positive with an absolute CD4 lymphocyte count of < 200 cells/mm3 before study entry.

Exclusion Criteria

Co-existing Condition:

Patients with any of the following conditions are excluded:

  • Glucose-6-phosphate dehydrogenase deficiency.
  • Allergy to sulfa drugs, probenecid, or quinine.

Concurrent Medication:

Excluded:

- Other drugs that might influence the metabolism or renal excretion of zidovudine (AZT).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Masking: None (Open Label)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Allergy and Infectious Diseases (NIAID)

Investigators

  • Study Chair: Kornhauser D

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Completion (Actual)

December 1, 1988

Study Registration Dates

First Submitted

November 2, 1999

First Submitted That Met QC Criteria

August 30, 2001

First Posted (Estimate)

August 31, 2001

Study Record Updates

Last Update Posted (Actual)

November 3, 2021

Last Update Submitted That Met QC Criteria

October 27, 2021

Last Verified

October 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ACTG 027
  • 11003 (DAIDS ES Registry Number)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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