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A Study of Tumor Necrosis Factor and Human Interferon-Gamma in Patients With AIDS Related Complex

2014-08-27 03:59:49 | BioPortfolio

Summary

To study the tolerance and toxicity of the combination of tumor necrosis factor (TNF) and interferon gamma (IFN-G) or as single agent TNF or IFN-G in HIV infected patients. To selectively monitor the immune system of AIDS related complex (ARC) patients who receive either combination therapy or TNF or IFN-G alone. To obtain information on the effectiveness of combination therapy or TNF or IFN-G alone against HIV in ARC patients.

Recombinant TNF and recombinant IFN-G have been shown to be effective against the virus which causes AIDS and ARC in some laboratory studies, but may increase virus replication in other laboratory studies. Previous studies in humans showed no increase in virus cultures and some decrease in measurements of virus. Extensive preclinical data show that TNF and IFN-G are more effective together than separately in laboratory and animal studies. As single agents, both TNF and IFN-G have modest effect against HIV. Studies have demonstrated that TNF and IFN-G, in combination, can not only inhibit HIV infection of previously uninfected cells, but also can selectively induce the destruction of acutely infected target cells.

Description

Recombinant TNF and recombinant IFN-G have been shown to be effective against the virus which causes AIDS and ARC in some laboratory studies, but may increase virus replication in other laboratory studies. Previous studies in humans showed no increase in virus cultures and some decrease in measurements of virus. Extensive preclinical data show that TNF and IFN-G are more effective together than separately in laboratory and animal studies. As single agents, both TNF and IFN-G have modest effect against HIV. Studies have demonstrated that TNF and IFN-G, in combination, can not only inhibit HIV infection of previously uninfected cells, but also can selectively induce the destruction of acutely infected target cells.

Patients with ARC who are positive for HIV antibody are randomized to receive one of three treatment arms: (1) TNF alone by intramuscular injection (IM); (2) IFN-G alone by IM; (3) TNF plus IFN-G. Patients receive IM injections 3 times weekly for 4 months (16 weeks). Repeated physical examinations and laboratory tests are used to monitor patients' safety. Serial HIV cultures and core antigen assays are employed to obtain evidence of antiviral activity and serial T cell and skin tests are used to measure immunologic effect.

Study Design

Masking: Double-Blind, Primary Purpose: Treatment

Conditions

HIV Infections

Intervention

Tumor Necrosis Factor, Interferon gamma-1b

Location

Univ of Washington
Seattle
Washington
United States
98105

Status

Completed

Source

National Institute of Allergy and Infectious Diseases (NIAID)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:59:49-0400

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Medical and Biotech [MESH] Definitions

A secreted tumor necrosis factor receptor family member that has specificity FAS LIGAND and TUMOR NECROSIS FACTOR LIGAND SUPERFAMILY MEMBER 14. It plays a modulating role in tumor necrosis factor signaling pathway.

A tumor necrosis factor receptor subtype that has specificity for TUMOR NECROSIS FACTOR ALPHA and LYMPHOTOXIN ALPHA. It is constitutively expressed in most tissues and is a key mediator of tumor necrosis factor signaling in the vast majority of cells. The activated receptor signals via a conserved death domain that associates with specific TNF RECEPTOR-ASSOCIATED FACTORS in the CYTOPLASM.

A tumor necrosis factor receptor subtype with specificity for TUMOR NECROSIS FACTOR LIGAND SUPERFAMILY MEMBER 15. It is found in tissues containing LYMPHOCYTES and may play a role in regulating lymphocyte homeostasis and APOPTOSIS. The activated receptor signals via a conserved death domain that associates with specific TNF RECEPTOR-ASSOCIATED FACTORS in the CYTOPLASM.

A tumor necrosis factor receptor subtype that is expressed primarily in IMMUNE SYSTEM cells. It has specificity for membrane-bound form of TUMOR NECROSIS FACTORS and mediates intracellular-signaling through TNF RECEPTOR ASSOCIATED FACTORS.

A tumor necrosis factor family member that is released by activated LYMPHOCYTES. Soluble lymphotoxin is specific for TUMOR NECROSIS FACTOR RECEPTOR TYPE I; TUMOR NECROSIS FACTOR RECEPTOR TYPE II; and TUMOR NECROSIS FACTOR RECEPTOR SUPERFAMILY, MEMBER 14. Lymphotoxin-alpha can form a membrane-bound heterodimer with LYMPHOTOXIN-BETA that has specificity for the LYMPHOTOXIN BETA RECEPTOR.

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