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| Sponsor: | National Institute of Allergy and Infectious Diseases (NIAID) |
|---|---|
| Information provided by: | National Institute of Allergy and Infectious Diseases (NIAID) |
| ClinicalTrials.gov Identifier: | NCT00000964 |
Purpose
To see if ranitidine, by reducing stomach acidity, can enhance the effectiveness of foscarnet, by making foscarnet more available to the body.
Foscarnet is an antiviral compound. Laboratory studies have shown it to be active against HIV. However, only 12 - 22 percent of an oral foscarnet dose is absorbed by the body. Ranitidine suppresses gastric acid output, increasing gastric pH. Thus by increasing gastric pH (decreasing stomach acidity), less foscarnet is expected to be decomposed or broken down in the stomach. Thus, more foscarnet should be absorbed into the body.
| Condition | Intervention | Phase |
|---|---|---|
|
HIV Infections |
Drug: Ranitidine hydrochloride Drug: Foscarnet sodium |
Phase I |
| Study Type: | Interventional |
| Study Design: | Treatment |
| Official Title: | The Effect of Increasing Gastric pH Upon the Bioavailability of Orally Administered Phosphonoformic Acid (Foscarnet) |
| Estimated Enrollment: | 6 |
Foscarnet is an antiviral compound. Laboratory studies have shown it to be active against HIV. However, only 12 - 22 percent of an oral foscarnet dose is absorbed by the body. Ranitidine suppresses gastric acid output, increasing gastric pH. Thus by increasing gastric pH (decreasing stomach acidity), less foscarnet is expected to be decomposed or broken down in the stomach. Thus, more foscarnet should be absorbed into the body.
Six asymptomatic HIV-infected males, or those with limited symptoms of early AIDS-related complex ( ARC ), will receive one dose intravenously of ranitidine in distilled water and one dose of placebo (distilled water alone), followed in 1 hour by foscarnet in oral solution. The order of ranitidine and placebo is randomized and the two foscarnet doses are separated by at least 72 hours. A nasogastric pH probe is placed on each morning of drug administration to monitor gastric pH.
Eligibility| Ages Eligible for Study: | 18 Years and older |
| Genders Eligible for Study: | Male |
| Accepts Healthy Volunteers: | No |
Inclusion Criteria
Concurrent Medication:
Allowed:
Patient must be able to give informed consent.
Exclusion Criteria
Patients with the following are excluded:
Prior Medication:
Excluded within 1 week of entry into study:
Contacts and Locations More Information
| Study ID Numbers: | ACTG 136 |
| Study First Received: | November 2, 1999 |
| Last Updated: | June 23, 2005 |
| ClinicalTrials.gov Identifier: | NCT00000964 History of Changes |
| Health Authority: | United States: Federal Government |
|
Ranitidine Phosphorus Acids Drug Evaluation Acquired Immunodeficiency Syndrome |
|
Anti-Infective Agents Neurotransmitter Agents Sexually Transmitted Diseases, Viral Phosphonoacetic Acid Slow Virus Diseases Molecular Mechanisms of Pharmacological Action Physiological Effects of Drugs Infection Reverse Transcriptase Inhibitors Ranitidine bismuth citrate Anti-Retroviral Agents Therapeutic Uses Anti-Ulcer Agents Retroviridae Infections Nucleic Acid Synthesis Inhibitors |
RNA Virus Infections Immune System Diseases Acquired Immunodeficiency Syndrome Gastrointestinal Agents Histamine Agents Enzyme Inhibitors Antiviral Agents Histamine H2 Antagonists Immunologic Deficiency Syndromes Pharmacologic Actions Virus Diseases Ranitidine Histamine Antagonists HIV Infections Sexually Transmitted Diseases |
