View clinical trials related to Infection.
Filter by:AMENDED: As of 10/19/90 only Children 0 to 3 months are being enrolled. Original design: To determine whether the experimental drug recombinant CD4 (rCD4), which is produced through genetic engineering technology, is safe and well-tolerated in children infected with or at risk for HIV infection. rCD4 may be an effective treatment for HIV infection, based on its ability to block infection of human cells by HIV in laboratory tests. However, the activity of rCD4 still needs to be confirmed in clinical trials. It is hoped that these tests will show that rCD4 is both safe and effective in treating children who are infected with or who are at risk for infection with HIV.
To find oral doses of FIAC (a pyrimidine nucleoside analog) that are effective in treating cytomegalovirus (CMV) viremia in HIV-infected immunocompromised patients; to determine tolerance and safety of FIAC in this patient population; and to determine pharmacokinetics following multiple doses of FIAC. (An example of another nucleoside analog effective against retroviruses such as HIV is zidovudine (AZT).) CMV infection is a medically significant opportunistic disease in patients with HIV-related infection. The purine nucleoside ganciclovir has been used to treat AIDS patients with CMV disease. Although ganciclovir is useful in treating CMV disease, such treatment is frequently complicated by hematologic (blood) toxicity. Also, treatment is difficult because it requires daily intravenous dosing. Test tube studies show that FIAC and its primary breakdown product FIAU are highly and specifically active against several viruses including CMV. A single-dose, pharmacokinetic (blood level) study showed that FIAC, when taken orally, is readily absorbed into the bloodstream, and most of it is converted to FIAU.
To evaluate three doses of clarithromycin in children with AIDS and Mycobacterium avium complex (MAC) infection who are receiving concurrent antiretroviral therapy. Before more extensive evaluation of this promising drug for treatment of MAC infection in children can be done, it is important to study the pharmacokinetics of this drug in this population, to get information regarding its use in pediatric patients receiving currently available antiretroviral drugs, and to get information on the antimycobacterial activity of this drug.
To quantitate in an HIV-infected population the percentage of patients demonstrating the "booster" phenomenon (attainment of a positive response to a second tuberculin purified protein derivative skin test when the first skin test was negative); to determine the relationship between the booster phenomenon and CD4-positive lymphocyte cell counts; to detect any relationship between the booster phenomenon and HIV exposure category. The accuracy of skin testing to detect Mycobacterium tuberculosis (MTb) infection is dependent upon the host's ability to mount a delayed-type hypersensitivity (DTH) reaction; however, the DTH response may be impaired or absent in patients with impaired cell-mediated immunity, a classic characteristic of HIV infection. Patients in whom immunity is diminished, but not absent, may test negative the first time a purified protein derivative skin test for MTb is administered, but if the same skin test is repeated, a positive DTH response may then be elicited. This occurrence is known as the "booster" phenomenon.
The purpose of this study is to see how HIV reacts in the immune systems of patients who have recently been infected with HIV. This study also examines HIV's resistance to anti-HIV drugs in newly infected patients. Certain populations are good candidates for participation in HIV vaccine trials. These groups include men who have sex with men, IV drug users, and women at risk of getting HIV through heterosexual contact. Learning how HIV behaves in these populations once they become infected can help with the planning of future HIV vaccine studies.
The purpose of this study is to compare the effectiveness of various combinations of anti-HIV drugs in HIV-positive men and women. Patients receive specific combinations of 3 or 4 of the following 6 drugs: didanosine (ddI), stavudine (d4T) efavirenz (EFV), nelfinavir (NFV), lamivudine (3TC), or zidovudine (ZDV). Anti-HIV therapy is effective in preventing the spread of HIV in the body. However, patients often experience unpleasant side effects and have difficulties following the dosing schedule. This study looks for combinations of anti-HIV drugs ("cocktails") which will be the most effective with the fewest problems.
The purpose of this study is to monitor patients who recently have been infected with HIV in order to learn how their immune systems respond to HIV infection and to study how the virus acts in their bodies. Primary HIV infection occurs within 20 days to 8 weeks following exposure to HIV. The symptoms of primary HIV infection are usually fever, tiredness, headache, or muscle aches. However, symptoms vary greatly from person to person, and some people might not experience any symptoms at all. Because these symptoms also resemble the cold or the flu, it is difficult to identify patients with primary HIV infection. Information gathered from this study will help doctors decide what kind of treatment is best to give patients who recently have been infected.
The purpose of this study is to evaluate the effects of stopping preventive therapy for DMAC in HIV-positive patients who (1) have been treated for DMAC for at least 12 months and are now free of any signs of DMAC for at least 16 weeks, and (2) have improved immune systems (CD4 cell counts greater than or equal to 100 cells/mm3) due to anti-HIV drug therapy. DMAC is a serious and sometimes life-threatening infection that usually affects only HIV-positive patients with CD4 cell counts (cells of the immune system that fight infection) less than 50 cells/mm3. It is recommended that people who are likely to get DMAC be placed on preventive medications which help reduce the risk of infection. New anti-HIV combination drug therapies can increase CD4 cell counts and can reduce the level of HIV in the blood. When CD4 counts are increased, risk of DMAC infection is less. This study examines whether it is possible to stop preventive therapy for DMAC when CD4 counts are high without placing individuals at risk for getting DMAC again.
The purpose of this study is to see if there are any changes in sugar and fat levels in the blood when patients take anti-HIV therapy for many years. Another goal is to test memory and mental concentrations to determine if anti-HIV drugs protect the brain from damage caused by HIV. (The purpose of this study has been changed from the original version.) HIV-infected patients with low CD4 cell counts are at risk for getting opportunistic (AIDS-related) infections. CD4 cells are cells of the immune system that help fight infection. Anti-HIV therapy may increase CD4 counts, which may lead to a decrease in AIDS-related infections. Problems that anti-HIV therapy is associated with include metabolic problems, neurologic problems, abnormal opportunistic infections, and cancer. Patients in ACTG 362 have been exposed to anti-HIV therapy longer than any other large group in the ACTG. These patients appear to benefit from their therapy, but also suffer problems from it. Observation of these patients should provide more information about long-term anti-HIV treatment and may detect unexpected problems. (This study as been changed. More information about the reasons for conducting this study has been added.)
To evaluate the safety of anti-HIV CTL therapy in early stage patients and to verify the safety when combined with antiviral therapy with zidovudine/lamivudine/indinavir and low-dose interleukin-2 (IL-2). To compare the effects on plasma and cell-associated viral load following combination drug therapy with and without antiviral CTL in early-stage patients. To study in detail the immune effects of lowering viral burden with antiviral combination drugs with and without T cell infusion on antiviral CTL activity, viral suppression and proliferation, circulating T cell phenotype, T cell apoptosis, CD4 cell numbers, DTH reaction, and inflammatory cytokine levels. In an HIV-infected person, there is an ongoing struggle between HIV replication and host immune control. In the past decade most therapeutic strategies have targeted the virus. This approach has been frustrated by viral mutation to evade drug sensitivity. Promising drugs have recently been approved and there are encouraging sustained results from combination antiviral chemotherapy. However, even the most potent drug regimens do not seem to be curative, may eventually lead to drug resistance and may not completely restore lost immune function. The addition of immune-based therapy to antiviral drugs may lead to better viral control.