View clinical trials related to HIV Infections.
Filter by:The purpose of this study is to evaluate the long-term consequences of HIV-1 infections that occurred in association with known, but discouraged, high-risk behaviors in persons who have received HIV candidate vaccines or placebo in HIVNET 014. Doctors need to look at how these patients respond to HIV infection in order to develop new HIV vaccines and other treatments for HIV and AIDS. Patients who receive HIV vaccines are sometimes protected from HIV infection. More often, these patients become HIV-positive but experience a boost in their immune system that helps their bodies fight HIV. Doctors need to look at how these patients respond to HIV infection in order to develop new HIV vaccines and other treatments for HIV and AIDS.
The purpose of this study is to find out why cancers develop in HIV-positive patients. Cancer is a leading cause of death in AIDS patients. Common cancers in HIV-infected patients include Kaposi's sarcoma (KS) and non-Hodgkin's lymphoma (NHL), a cancer of the immune system. Risk factors include certain chemicals, viruses, and perhaps even anti-HIV drugs. Doctors would like to find out which risk factors are most important and how they relate to cancer in AIDS patients.
The purpose of this study is to find out whether these powerful combinations of anti-HIV drugs are safe and effective for use in patients in the early stages of HIV infection and to find out how patients' immune systems react to HIV and anti-HIV drugs. Doctors generally treat patients in the early stages of HIV infection with the same anti-HIV drugs taken by patients who have had HIV for a long time. These drugs lower the level of HIV in the blood. However, doctors do not know whether patients who take anti-HIV drugs in the early stages of HIV infection actually live longer or have fewer AIDS-related diseases. This study will help doctors answer these questions. In the main study, doctors will look at how 2 different anti-HIV drug combinations affect the immune system. In the 2 substudies, doctors will look at how the body reacts to the hepatitis B vaccine and the tetanus vaccine. These substudies may help doctors learn how HIV-infected patients respond to new infections.
The purpose of this study is to determine the best dose of T-20, a new anti-HIV drug, to treat HIV-infected children. T-20, unlike other anti-HIV medications, lessens the ability of HIV to infect certain cells (T cells) in the body. Doctors hope to better treat HIV by adding T-20 to anti-HIV drug combinations that include 1 or 2 nucleoside reverse transcriptase inhibitors (NRTIs) plus a nonnucleoside reverse transcriptase inhibitor (NNRTI) and/or a protease inhibitor (PI).
This study evaluates patients infected with both HIV and Hepatitis C virus (HCV) who are receiving anti-HIV drugs. The purpose of this study is to learn more about HCV infection in patients whose HIV blood level decreases to less than 500 copies/ml.
The purpose of this study is to determine if TNFR:Fc (a molecule that attaches to TNF) can lower the amount of IL-6 in HIV-positive patients. This study will also examine the effect of TNFR:Fc on TNF-alpha. IL-6 and TNF-alpha are 2 substances produced by the immune system that may increase the rate of HIV replication. IL-6 and TNF-alpha are produced naturally by the body. High levels of TNF-alpha lead to increased IL-6 production and increased HIV replication, therefore helping the virus infect the body. HIV-positive patients who receive IL-2 (interleukin-2, a protein that helps the immune system fight infection) tend to have higher levels of IL-6 and TNF-alpha than patients not receiving IL-2. These increased levels may contribute to some of the flu-like symptoms related to IL-2 administration. TNFR:Fc can neutralize TNF-alpha to decrease the action of TNF-alpha and, in turn, decrease the amount of IL-6 in the body. TNFR:Fc may, therefore, have a role in the treatment of HIV disease or in relieving some of the symptoms related to IL-2 administration.
Part A: To evaluate the impact of HSV suppression with acyclovir ( ACV ) on HIV burden in patients with asymptomatic HSV infection and at high risk for HSV reactivation. Part B: To characterize the change in plasma HIV RNA levels and other measures of HIV burden during and after a 10 day course of ACV treatment for acute HSV infection. Approximately 70% of patients infected with HIV are concurrently infected with HSV. There is new evidence to suggest that HSV may act as a co-factor in HIV disease progression. This study will attempt to determine if the upregulation of HIV RNA that occurs during symptomatic HSV reactivation also occurs during asymptomatic HSV reactivation and if suppression of HSV will result in decreased levels of HIV RNA. There is a need to determine the patterns of association between HSV and HIV.
Primary: To evaluate the safety, toxicity, and antitumor activity of two doses of interferon alfa-2b (IFN-alpha) combined with a fixed dose of didanosine (ddI) in patients with Kaposi's sarcoma associated with HIV infection. Secondary: To evaluate the effects of combined IFN-alpha and ddI treatment on HIV expression and markers of immune function. Previous studies have shown that IFN-alpha can induce regression of Kaposi's sarcoma and suppression of HIV in some patients. Although various trials using IFN-alpha in combination with the nucleoside analogue zidovudine have demonstrated a high degree of antitumor activity and evidence of HIV suppression, the overlapping toxicity (primarily neutropenia) of these two agents has proven dose-limiting. The toxicity profile of ddI suggests that this drug may be better tolerated than zidovudine when combined with IFN-alpha.
To evaluate the safety and toxicity of combination therapy for AIDS-associated Kaposi's sarcoma with zidovudine (AZT) and two kinds of interferon alpha. The two kinds are interferon alpha (IFN-A) and interferon alpha-2A (recombinant) (IFN-A2A). To define the pharmacokinetics of AZT and IFN-A or AZT and IFN-A2A when given in combination. To define the maximum tolerated dose (MTD) of each drug in combination and to define doses to be used in Phase II trial. AZT has been found to be effective against the effects of HIV in vitro (test tube) and both interferons have shown antiviral and antitumor effect on Kaposi's sarcoma. It is reasonable to assume that a synergism and an enhanced antitumor response may be seen with combination therapy. A study to evaluate the safety and effectiveness of AZT in the combination with IFN-A2A is warranted.
To find out which of four doses of (recombinant) human interferon gamma (IFN-G) is most effective in stimulating the white blood cells (monocytes) to fight infection and to see if treatment with IFN-G can strengthen the ability of AIDS patients to control infections. This study will also determine how long after a single injection of IFN-G white blood cells remain stimulated. AIDS is a disease that progressively destroys that aspect of the body's defense called the immune system. It is particularly harmful to a class of cells called helper T-lymphocytes. The specific opportunistic infections and malignancies associated with AIDS have been treated with therapies that are often poorly tolerated by the patients and are associated with dose-limiting toxicities. The principal focus of AIDS therapy research at present is to control the underlying retroviral infection and to restore immune function with recombinant lymphokines, adoptive immunotherapy, and/or lymphocyte transplants. These treatments include zidovudine (AZT), which has been shown to control the HIV infection, and IFN-G, a lymphokine which activates tumor-destroying and germ-killing functions. Studies are needed to find the dose by which IFN-G works best.