Active clinical trials for "HIV Infections"

The purpose of this study is to look at the amount of HIV in the blood, genital fluid, and saliva of the partners of patients with early HIV infection. This study will also look at the strength of the immune systems of patients with early HIV infection. Because HIV multiplies very quickly in the early stages of infection, patients with early HIV infection may be more likely to transmit HIV to their partners. The amount of HIV in blood, genital fluid, and saliva may determine the risk for transmission.

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.

To describe the magnitude and duration of changes in HIV-1 RNA levels during and after an acute febrile illness. To identify factors associated with increases, i.e., type of illness ultimately diagnosed (bacterial, viral, fungal), CD4 cell count, and antiretroviral treatment regimen. To describe changes in phenotypic markers of immune activation/dysregulation of CD4 and CD8 lymphocyte subsets and their relationship to intercurrent illness. To describe changes in plasma cytokines and soluble activation markers and their relationship to plasma HIV-1 viremia during and after the onset of intercurrent illness. To characterize the viral biologic phenotype and the viral drug susceptibility genotype before, during, and after the onset of an acute febrile illness. To characterize the expression of HIV-1 co-receptors before, during, and after the onset of an acute febrile illness Repeated episodes of intercurrent infections have been postulated to be an important stimulus for progression of HIV infection. The study of intercurrent illness in patients with initially undetectable viral load removes viral load as a possible cause for virologic and immunologic changes and allows for a more direct association of the intercurrent illness with changes in viral load, viral HIV-1 phenotypes, viral HIV-1 genotypes, and T cell phenotypes. Studying intercurrent illness and viral load provides an opportunity to characterize the potentially dynamic changes not only in viral load but also in phenotypic markers of T cell activation, plasma cytokine levels, phenotypic and genotypic changes in circulating virus, and HIV-1 tropisms.

This study will look at how well the OraQuick HIV 1/2 Antibody rapid test works and how women accept being tested for HIV late in pregnancy and during labor. For women with positive test results, the study will look at whether or not these women accept anti-HIV drugs and which drugs they receive.

This was a feasibility study aimed at elevating protease inhibitors (PI) dosage as a part of active antiretroviral therapy (HAART). After the pharmacokinetics for the currently prescribed PI were determined,patients with a vIQ<1 were eligible for a 50% dose increase for an 8 week time frame after which their vIQ would be reassessed to determine if increasing their PI dosage thereby increasing the bioavaiability would reduce their viral load.

During this phase of the study, a focus group will be conducted with young adolescents perinatally infected with HIV and with their caregivers to develop and evaluate the content of the proposed intervention. The purpose of the focus groups is to identify key issues and challenges that often face young adolescents perinatally infected with HIV and their caregivers as well as to elicit suggestions to enhance the feasibility and acceptability of the proposed intervention. The focus groups will be audio recorded and transcribed and reviewed by all involved in future protocol development. Themes will be pulled directly from the focus groups to guide examples and areas of emphasis in the intervention. In addition, proposed measures will be administered to the adolescents and their caregivers and assessed for appropriateness for this population.

It has been shown that treatment of HIV-positive women with antiretroviral medication during pregnancy reduces the risk of HIV transmission to the child. However, such treatment could lead to the selection of resistant virus strains in the mother. The object of this study is to check HIV+ pregnant women for resistance mutations in HIV before and after the antiretroviral therapy they receive during pregnancy. HIV-positive newborns will also be tested, to see if a resistant virus strain was transmitted from mother to child.

The purpose of this study is to measure viral tropism over time in subjects with X4-tropic or non-phenotypeable virus while receiving standard of care therapy. This is an observational study. No investigational treatment will be administered through this study.

The goal of this research study is to compare 2 different phone-based programs for quitting smoking for people with HIV/AIDS.

Background: - Human immunodeficiency virus (HIV) infection appears to cause problems with blood vessel function. These problems may add to some thinking and mood disorders found in people with HIV infection. Researchers want to evaluate HIV infected patients to see if blood vessel function contributes to thinking and mood disorders, such as early dementia and depression. To do so, they will compare study results between people with and people without HIV infection. Objectives: To compare the thickness of blood vessel walls between people with and without HIV infection. To study the relationship between blood vessel thickness and thinking and mood disorders. Eligibility: Individuals between 25 and 55 years of age who have HIV infection. Healthy individuals between 25 and 55 years of age. Design: Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. Participants will have imaging studies of the brain and major blood vessels in the head and neck. Participants will also have neuropsychological testing. These tests will look at memory, learning and thinking ability, attention, and mood. Participants will have the option of coming back for repeat blood tests every six months and repeat imaging studies and neuropsychological tests every year, over 1- 4 years period.