View clinical trials related to HIV.
Filter by:Background: - Long-term survival with the human immunodeficiency virus (HIV) is not well understood. Adults who were infected with HIV as children have lived with the virus for many years. However, the effect of HIV on this group of people has not been studied in depth. Researchers are interested in studying how HIV infection and the medicines used to treat it affect people who were infected early in life. They want to find out if there are any problems with how HIV-infected children grow and develop as adults, especially if they have developed heart problems. As part of this study, people with HIV will be compared with healthy volunteers. Objectives: - To study the effect of HIV infection and treatment on people who acquired HIV infection in early life. Eligibility: - Individuals at least 18 years of age who acquired HIV infection in early life. - Healthy volunteers at least 18 years of age without HIV will serve as controls Design: - Participants will be screened with a physical exam and medical history. They will have regular study visits about once a year for up to 10 years to collect health information. - Blood and urine samples will be collected to look at kidney and liver function. - X-ray scans will be used to look at bone density and the amount of fat and muscle in the body. - Treatment will not be provided as part of this study.
The purpose of this study is to assess the pharmacokinetic parameters for ABC and 3TC in HIV-infected children younger than 18 years old with body weight ≥ 14 kgs.
There are no data on efficacy, safety and pharmacokinetics of ATV/r-based HAART in HIV-infected Asian children. Therefore, the investigators aim to evaluate the pharmacokinetics, efficacy and safety of ATV/r-based HAART in Thai HIV-infected children.
The purpose of this study is to determine if there is a benefit to taking trimethoprim-sulfamethoxazole (TS) as prophylaxis among HIV positive adults who have viral load suppression and a good clinical response on anti-retroviral therapy (ART). If there is a benefit, then is it due to antimalarial or antibacterial properties. The investigators hypothesize that there will be a long-term benefit on survival and disease control in the context of prophylaxis and that the benefit will largely be attributed to prevention of malaria. The main study hypothesis is that 1)TS and chloroquine (CQ) will decrease the rates of morbidity and mortality among adults after 6 or more months of ART and 2) CQ prophylaxis will be associated with more prolonged viral suppression and higher CD4 cell counts than TS prophylaxis or no prophylaxis.
Rationale: The Bacille Calmette-Guérin (BCG) vaccine protects children against disseminated tuberculosis (TB) including TB meningitis and miliary TB, but efficacy against pulmonary TB is inconsistent among children and adults. Administration of live attenuated BCG to infants known to be HIV infected is contraindicated by the World Health Organization (WHO), due to the risk of serious vaccine adverse events (BCG disease. Developing countries, which lack capacity for integration of early infant HIV testing with infant vaccination schedules, have not fully implemented the WHO guidelines on BCG vaccination of HIV exposed infants. Newborn infants of HIV infected mothers continue to receive routine BCG before HIV infection has been excluded. Clinical trials of new viral-vectored TB vaccines, including MVA85A, a modified vaccinia virus Ankara (MVA) vaccine expressing the Mycobacterium tuberculosis antigen 85A, have to date enrolled infants who were already vaccinated with routine BCG at birth. However, TB vaccination regimens that depend on newborn BCG will remain unsafe for HIV infected infants. Infants of HIV infected mothers, who constituted 29% of babies born in South Africa in 2009, would benefit from a new TB vaccination strategy, in which BCG is delayed until after HIV infection has been excluded. These HIV exposed infants also have greater increased risk of TB disease. Testing the safety and immunogenicity of MVA85A vaccine prime, followed by selective delayed BCG boost, in HIV exposed newborns, is a critical step towards delivery of a new TB vaccine regimen that is safe and effective for all infants, regardless of HIV exposure. Study Design: Double blinded, randomised, controlled trial. HIV exposed infants will be randomised 1:1 to receive single dose, intradermal MVA85A vaccine or Candin® control at birth. The first 60 infants enrolled in the trial will form a pilot safety cohort for formal Data Monitoring & Ethics Committee (DMEC) safety review. Thereafter, safety and immunogenicity outcomes will be measured in all infants. Study Population: Infants (n=340) born to HIV infected mothers receiving antiretroviral therapy (ART) or Prevention of Mother to Child Transmission (PMTCT) prophylaxis. Sites: Worcester (University of Cape Town) and Khayelitsha (Stellenbosch University), South Africa Study Intervention: Newborn infants will receive 1 x 108 pfu MVA85A vaccine or Candin® control by intradermal injection. Infants confirmed HIV uninfected by HIV PCR will receive BCG Vaccine SSI at 8 weeks of age. Infants confirmed HIV infected by HIV PCR will not receive BCG. Primary specific aims: To evaluate the safety of MVA85A given at birth to HIV exposed uninfected infants. To evaluate the safety of BCG given at 8 weeks of age to HIV exposed uninfected infants, using an MVA85A prime and BCG boost strategy. Secondary specific aims: To evaluate the immunogenicity of MVA85A given at birth to HIV exposed uninfected infants. To evaluate the immunogenicity of BCG given at 8 weeks of age to HIV exposed uninfected infants, using an MVA85A prime and BCG boost strategy. Safety endpoints: Local, regional, and systemic adverse events (AEs) and serious adverse events (SAEs). Immunology endpoints: Frequencies of CD4 and CD8 T cells producing any of 4 cytokines (IL-17, IFN-γ, TNF-α, or IL-2), or polyfunctional combinations of these cytokines simultaneously, following stimulation with antigen Ag85A or BCG, measured by whole blood intracellular cytokine assay (WB-ICS). Specific proliferative capacity of CD8 and CD4 T cells that produce any of the three cytokines (IFN-γ, TNF-α, and/or IL-2) or combinations of these cytokines simultaneously, measured by a novel whole blood 6-day lymphoproliferative flow cytometric assay (WB-prolif). Relative proportions and absolute numbers of peripheral blood myeloid and lymphoid cell subsets, measured directly ex vivo by flow cytometry. Study groups: The first 60 infants enrolled in Study Group 1 will undergo intensive safety evaluation, followed by DMEC review of Day-28 safety data. The DMEC will make a formal recommendation on continuation of enrollment and/or changes to the protocol, based on this safety review. Study Groups 2-5 will be evaluated for clinical safety and immunology outcomes. Statistical Analysis: Cumulative 12-month incidence of local, regional, and systemic AEs, by category, will be compared for HIV exposed uninfected subjects receiving MVA85A vaccine or Candin® control at birth. The sample size has 90% probability of detecting an SAE with a true occurrence rate of 1.5% in infants receiving MVA85A vaccine and 80% power to detect a 15% difference in the rate of non-serious AEs (20% compared to 35%) between the two study arms (p<0.05). Multivariate models will be built to explore longitudinal immunological data and identify independent associations with MVA85A vaccination and covariates of interest.
The purpose of this study is to understand how differences in the nutritional status and concentration of hormones and cytokines associated with cachexia in HIV+ and HIV- pregnant women living in a semi-rural and rural region of northern Tanzania affect fetal growth, pregnancy outcomes and early infant health and development. The study hypothesis is that HIV+ women will have worse nutritional status and a greater degree of cachexia which will negatively impact fetal growth, pregnancy outcomes and early infancy health and development.
Although gains have been made in achieving the health-related Millennium Development Goals (MDG), much is still needed in countries affected by high levels of HIV/AIDS. Prevention of mother-to-child transmission (PMTCT) is a cornerstone strategy in reducing infant mortality from HIV. The study will employ a cluster randomized control trial (cRCT) with 26 health facilities randomized to two arms (intervention or control) to determine the effect of mobile phone technology on completion of key PMTCT milestones from antenatal to six weeks postpartum. The study will examine the acceptability, effectiveness, and cost of implementing a PMTCT-focused mHealth strategy among HIV-infected pregnant women, health workers, and male partners.
The purpose of this study is to determine if a computerized version of Cognitive Behavioral Therapy (CBT) can improve high-risk sexual behaviors in patients attending an outpatient methadone treatment clinic. This population is at high risk for contracting and spreading hepatitis and HIV. When added to their treatment as usual (TAU), the CBT session will increase the total exposure of clients to education about how to reduce risky sexual and needle use behaviors and provides real world examples. This study seeks to determine if the use of this CBT program is easily added into the clinical program and if patients are satisfied with its use. The main hypothesis is that the use of computerized CBT in addition to treatment as usual will improve knowledge and reduce occurrences of unprotected sexual activity. The study will also look at patient and clinic costs related to the CBT intervention, drug use and retention/adherence.
This study seeks to develop, implement, and assess an innovative 15-session couple-based intervention to be delivered in a group format to young parents that aims to strengthen relationships and reduce HIV risk. The ultimate goal of our intervention is to reduce HIV/STD risk (concurrency, number of partners, unprotected sex), strengthen relationships, and improve parenting among young parenting heterosexual couples.
HIV continues to spread among Black men who have sex with men (MSM), but few interventions target high-risk Black men who have sex with men and women (MSMW). Black MSMW with histories of childhood sexual abuse (CSA) may be an especially vulnerable population for: a) high-risk sexual behaviors; b) negative psychological sequelae (e.g., depressive or posttraumatic stress disorder (PTSD) symptoms); and c) neurobiological abnormalities in cardiovascular, neuroendocrine and/or immune systems (e.g., cortisol and norepinephrine), and HIV/AIDS progression. The purpose of this study was to test an HIV risk reduction intervention, guided by the Social Learning Theory, the Ecological Model, and the concept of allostatic load, a composite of the cumulative effects of stress on biological systems including psychoneuroimmunologic markers. The investigators tested the 6-session Enhanced Sexual Health Intervention for Men (ES-HIM) on 88 non-gay identifying HIV-positive Black MSMW with histories of CSA. The outcomes were to reduce high-risk sexual behaviors (i.e., unprotected anal and vaginal sex and number of sex partners) and negative psychological symptoms of depression and PTSD. Links between these outcomes and biomarkers of stress were also explored. Randomization to either the ES-HIM or a health promotion control group occurred with study participants assessed at baseline, post, 3- and 6-months.