Active clinical trials for "HIV Infections"

To examine whether daily oral zinc supplementation to HIV-infected Tanzanian preschool children reduces diarrheal and respiratory morbidity, delays HIV disease progression, and improves growth.

An intensification with the HIV-1 integrase inhibitor Raltegravir (RAL) of a stable HAART regimen with persistent HIV-1 viral suppression could increase the slope of decay of the HIV-1 latent reservoir.

The purpose of this study is to determine whether interactions between raltegravir and lamotrigine take place and to study the safety of the combination raltegravir/lamotrigine before used in HIV patients.

This study will examine the effectiveness of Mindfulness-Based Stress Reduction (MBSR) in helping men living with HIV cope with negative emotions and stresses in their life. MBSR is an approach to reducing stress for patients with chronic medical conditions. It involves systematic training in mindfulness meditation practices to increase quality of life and to reduce general stress, anxiety, depression or pain. The effectiveness of MBSR will be evaluated by looking at changes in participants' experience of stress, anxiety associated with pain management and psychosocial functioning before and after they receive the MBSR compared with participants who do not receive the MBSR treatment. In order to participate, individuals must be: male, living with HIV, age 18-70 years, live within one hour of participating centre, and have a good understanding of the English language. Questionnaires will be completed before individuals begin the program, at the end of the intensive phase (8 weeks) and at 6 months after the start of the group program. The primary program evaluation outcome will be a reduction in stress; secondary evaluation outcomes will include the improvements in the physical and emotional experience of pain as well as general psychosocial functioning and self-esteem.

Basing in studies which have related the darunavir (DRV) virtual inhibitory quotient (vIQ) with the virological response, it is possible to think in the possibility of simplifying the rescue treatment with DRV/ritonavir to 900/100 mg once a day in those patients who are being treated with DRV/ritonavir 600/100 mg twice a day and who, besides having undetectable viral load, have a vIQ over 2. This strategy would not jeopardize the efficacy of the antiretroviral treatment and would have less impact in the lipid profile of the patients as well as less pharmaceutical expenditure.

The purpose of this trial is to compare the effectiveness, safety and tolerability of TMC278 given at a dose of 25 mg once daily versus efavirenz (EFV) at a dose of 600 mg once daily, when combined with a fixed background regimen consisting of emtricitabine (FTC) + tenofovir disoproxil fumarate (TDF), in HIV-1 infected patients who have not yet taken any anti-HIV drugs. The following evaluations will be done: antiviral activity, immunologic changes, and viral geno-/phenotype evolution, relationship of Pharmacokinetics (PK) and PK/Pharmacodynamics, medical resource utilization and treatment adherence.

Vicriviroc (vye-kri-VYE-rock) is an investigational drug (not yet approved by Government Regulatory Authorities for commercial use) that belongs to a new class of drugs, called CCR5 receptor blockers. This group of drugs blocks one of the ways HIV enters T-cells (the cells that fight infection). Previous smaller studies in HIV treatment-experienced patients, have shown that vicriviroc is safe and effective. The purpose of this study is to confirm the previous findings in a larger phase 3 study over a 48-week period, and show that when taken in combination with other appropriate HIV drugs, vicriviroc can decrease the level of HIV (viral load) in the blood and that it is well tolerated.

This study will evaluate whether an experimental vaccine intended to prevent HIV infection is safe and whether it causes any side effects. It will also examine whether the vaccine, called VRC-HIVDNA016-00-VP, causes an immune response, and will monitor participants for the social impact of being in an HIV vaccine study. VRC-HIVDNA016-00-VP contains synthetic DNA that codes for parts of four HIV proteins. It also contains a "promoter" piece of DNA that is needed to start protein production. The promoter DNA is also synthetic and is like the promoter in another virus called cytomegalovirus (CMV). The vaccine contains no live HIV virus or CMV and cannot cause either of these illnesses. Healthy volunteers between 18 and 44 years old who are HIV-negative may be eligible for this 32-week study. Candidates are screened with a medical history, physical examination, and blood and urine tests. Participants receive three injections of the experimental vaccine approximately 28 days apart. The injections are given with a system called the Biojector 2000 that delivers the vaccine through the skin into the muscle without the use of a needle. Subjects are observed for side effects for at least 30 minutes after each vaccination and are required to telephone the clinic staff 1 to 2 days after the injection to report how they are doing. In addition, they are given a diary card to take home, on which they record their temperature and any symptoms daily for five days. Participants return to the clinic two weeks after each injection. They return the completed diary card and are checked for any health changes or problems since the last visit. They are asked how they are feeling and what medications, if any, they have taken. Blood and urine samples are collected. Some subjects may be asked to have laboratory tests between regular visits if needed to evaluate a change in health. Participants are also asked about any social effects they may have experienced as a result of their participation in the study.

This study will compare the ability of fosamprenavir 700 mg with ritonavir 100 mg twice a day or lopinavir 400 mg with ritonavir 100 mg twice a day both combined with a fixed dose combination tablet of abacavir 600 mg and lamivudine 300 mg once a day to suppress virus levels of HIV to less than 400 copies/mL of blood. In addition we will study the safety and tolerability of these compounds over the 48 week study period in patients naive to anti-HIV therapy.

Maraviroc (UK-427,857), a selective and reversible CCR5 coreceptor antagonist, has been shown to be active in vitro against a wide range of clinical isolates (including those resistant to existing classes). In HIV-1 infected patients, maraviroc (UK-427,857) given as monotherapy for 10 days reduced HIV-1 viral load by up to 1.6 log, consistent with currently available agents. Safety and toleration have been studied in over 400 subjects for up to 28 days at 300 mg twice daily. No significant effects were seen on the QTc interval. The purpose of this study is to evaluate the antiretroviral activity of maraviroc (UK-427,857) in HIV infected, treatment experienced patients who are failing their current antiretroviral regimen and are infected with R5-tropic virus exclusively. This study will involve more than 100 centers from the US and Canada to achieve a total randomized subject population of 500 subjects. Patients will be randomly (2:2:1) assigned to one of three groups: Optimized Background Therapy [OBT (3-6 drugs based on treatment history and resistance testing)] + maraviroc (UK-427,857) 150 mg taken once daily, OBT + maraviroc (UK-427,857) 150 mg taken twice daily, or OBT alone. The study will enroll over approximately a 9 month period with 48 weeks of treatment. This may be extended for an additional year depending on the results at 48 weeks. Physical examinations will be performed at study entry, weeks 4, 8, 12, 16, 20, 24, 32, 40, and 48. Blood samples will also be taken at study entry, weeks 2, 4, 8, 12, 16, 20, 24, 32, 40, and 48. Additionally, blood samples will be drawn twice, at least 30 minutes apart, at weeks 2 and 24 for maraviroc (UK-427,857) pharmacokinetic analysis. As part of this clinical study a blood sample will also be taken for non-anonymized pharmacogenetic analysis. Patients will undergo a 12-lead electrocardiogram at study entry, weeks 24 and 48.