View clinical trials related to HIV Infections.
Filter by:The purpose of this study is to determine whether the HIV vaccine MRKAd5 HIV-1 gag/pol/nef followed by treatment interruption can increase immune system function in adults with acute or recent HIV infection who have started taking anti-HIV drugs.
HIV infected patients, aged </= 35 years and aged >/= 55 years, who are regularly taking either efavirenz (EFV) or lopinavir/ritonavir (Lop/r) as part of their antiretroviral regimen are being asked to spend 12 hours at the researchers' clinic (the ACS clinic at Jacobi Medical Center, Bronx, New York) for an intensive pharmacokinetic study in which 5 cc of blood will be drawn 9 times over a 12 hour period. Patients taking EFV will return for one additional blood draw the following day.
To investigate the effect of treatment of HIV infection with highly active antiretroviral therapy on individual steps of reverse cholesterol transport, endothelial function and intima-media thickness in HIV patients.
The aim is to investigate the hypothesis that IL7-receptor polymorphisms contribute to the differential immune recovery of CD4 + T cells following HAART
It remains unclear why some individuals are able to clear HBV from their bodies while in others HBV is a persistent infection. We plan to investigate this process by collecting blood and analysing how the patient's white blood cells respond to different pieces of the HBV virus. We will use new tools that can precisely tell us which component of the immune response may be different in individuals who are chronically infected with HBV and also in individuals who are also infected with HIV. The primary aims are therefore: 1. To characterize HBV-specific T cell responses in HBV chronic carriers, and identify novel immunogenic regions in both HLA-A2+ and non-HLA-A2+ individuals. 2. To determine the effect of HIV infection on HBV-specific T-cell responses
Identifying new approaches for preventing breastmilk transmission of HIV-1 is an important research priority. To this end, clinical trials are underway to evaluate the efficacy of HAART (zidovudine, lamivudine, nevirapine) during late pregnancy/lactation versus zidovudine/nevirapine peripartum for prevention of breastmilk HIV-1 transmission. It is important to understand the mechanism of effect of these antiretroviral (ARV) strategies on prevention of breastmilk HIV-1 transmission. This phase II trial will compare HAART vs peripartum zidovudine/nevirapine for effect on breastmilk HIV-1, breastmilk HIV-1 specific immune responses, and infant HIV-1 specific immune responses. 100 pregnant HIV-1 seropositive women in Nairobi with CD4 counts between 200 to 500 who have chosen to breastfeed will receive either ARV regimen. Mother-infant pairs will be followed for 1 year after delivery. Home visits will be conducted in the first month (~10 visits) to collect 2-5 mls of breastmilk per visit. Mother-infant pairs will be seen in the study clinic with maternal blood and breastmilk and infant blood collected at months 1, 3, and 6 for HIV-1 and HIV-1 Elispot assays. Breastmilk HIV-1 RNA and DNA levels will be quantified in Dr. Overbaugh's laboratory in Seattle and Elispot assays conducted in Nairobi with validation of a subset in Dr. Rowland-Jones laboratory in Oxford. Viral loads, decay curves, half-life, and re-population following ARV cessation will be estimated for each regimen and regimens compared. These studies will provide insight into the viral and immune responses to ARV regimens proposed for prevention of breastfeeding HIV-1 transmission and will be important for rational design of future interventions. After taking into account, estimated loss to follow-up, the targeted sample size with outcome data was 80 women, 40 in each trial arm, estimating undetectable breast milk HIV-1 RNA levels in the HAART arm and median breast milk HIV-1 RNA levels of 3.0 log10 in women receiving ZDV/NVP.
This study will evaluate the efficacy of two curricula relative to standard care. The first is a sexual risk avoidance curriculum for middle school students that included abstinence until marriage and complies with Title V Section 510 A-H abstinence education requirements. The second is a sexual risk reduction curriculum for middle school students that included abstinence and condom/contraceptive information and skills. Each intervention consists of an age-appropriate classroom curriculum and a CD-ROM-based tailored intervention delivered in 7th and 8th grade. The overall goal of the study is to identify common elements of effective sexuality education curricula that will be of benefit to youth.
The purpose of this study is to determine whether the addition of zidovudine (ZDV) and lamivudine (3TC) at the onset of labor and for up to seven days postpartum to single-dose nevirapine (NVP) is associated with a lower prevalence of NVP-resistant HIV compared to single-dose NVP without ZDV+3TC.
This is a comparative clinical trial among HIV-infected women and their infants to determine: 1. the benefit of nutritional supplementation given to women during breastfeeding 2. the benefit and safety of antiretroviral (ARV) medications given either to infants or to their mothers to prevent HIV transmission during breastfeeding 3. the feasibility of exclusive breastfeeding followed by early, rapid breastfeeding cessation
The purpose of this study is to test whether a multi-component, community-level, HIV-prevention intervention is more effective than existing HIV prevention activities in reducing unprotected anal intercourse (UAI) among men ages 15-25 who have sex with men.