View clinical trials related to HIV.
Filter by:The purpose of this study is to evaluate any differences in the effectiveness, safety, and tolerability of PREZISTA (darunavir; DRV) 600 mg, administered with ritonavir (RTV) 100 mg twice a day on virologic response (defined as a viral load (VL) of < 50 copies/mL) over a 48-week treatment period in HIV-positive women and men. Additional antiretroviral (ARV) agents will also be administered and will be chosen by the Investigator based on resistance testing and prior treatment history (referred to as the Optimized Background Regimen (OBR)).
Kaposi's sarcoma (KS)is the commonest malignancy associated with HIV/AIDS. Therapy for this cancer, which causes substantial morbidity, is suboptimal in resource poor settings. The reasons for this are: advanced state of immunosuppression when patients present for clinical care, concomitant opportunistic infections, non- availability of antiretroviral therapy (ART), non-availability and toxicity of chemotherapy (CXT), when available, in patients with full blown AIDS, prohibitive costs of bone marrow support and fiscal constraints in resource poor settings. A recent Cochrane Review assessed the effectiveness of current therapeutic regimens for HIV KS, with a focus on options available in resource poor settings. The major selection criteria for this review were randomized controlled trials for HIV KS in adults. The main conclusions were that data from randomized controlled trials on effective treatments for HIV KS are sparse, particularly among people who are also taking highly active antiretroviral therapy (HAART). Alitretinoin gel is effective for therapy of cutaneous lesions, pegylated liposomal doxorubicin is effective for advanced KS and radiotherapy is effective for treating cutaneous lesions. Apart from the randomized trial of radiotherapy, no trials applicable to developing settings were identified. Therapy of HIV KS in developing countries thus remains unanswered. The authors concluded that therapies discussed in the review are unlikely to be available or affordable in developing countries where the bulk of HIV infection and KS occur, apart from radiotherapy at a few tertiary centers. However, recent changes in pricing due to the global alliance and access initiatives mean that HAART is likely to be more available and accessible to developing countries in the near future. South Africa now has committed to this at cabinet level and had a task force to address this issue. HAART has been proposed as therapy for HIV KS on the basis of restoring immune competence and minimizing the HIV tat drive to KS formation. It also improves immunologic control of HHV 8 possibly through interrupting the HIV-1- HHV-8 interaction. There has been only one randomised trial conducted in Spain which compared HAART to the combination of HAART and CXT. There is to date no prospective, randomised controlled trial which compares the efficacy of HAART to the standard of care in HIV KS in Africa.
Lung immune responses are regulated independently of systemic responses. Injected vaccines may induce optimal responses in blood but not at mucosal surfaces. We compared the responses in serum and lung fluid to injected pneumococcal conjugate vaccine.
The objective of this application is to develop and assess a system which uses non-clinician extenders to provide selected aspects of HIV care in rural western Kenya. The plan is to train persons living with HIV/AIDS (PLWAs) to undertake this role as Community Care Coordinators. Our central hypothesis, is that PLWAs can be effective members of the health care team and that their involvement in community-based HIV care will facilitate patient access to services and improve outcomes. As such our two specific aims are: 1) To develop a sustainable system to extend HIV care into the community and to train the individuals necessary to support such a system (Community Care Coordinators). 2) To determine the impact of Community Care Coordinators on patient adherence (to drugs and to clinic visits), clinical outcomes (i.e. viral load responses [an individuals level of circulating HIV virus], inter-current opportunistic infections, hospitalization, drop out from the program, change to second line therapy and mortality) and patient perception of stigma. This study will provide invaluable data on the use of non-clinician care extenders for providing HIV care in resource poor settings. As such, knowledge gained from this study will assist in developing a model for non-clinician centered HIV care systems elsewhere in sub-Saharan Africa.
After Initiation of HAART in peoples who living with HIV/AIDS in Thailand by the year 2000, rapidly expanded HAART access of national project has been promoted in 2004. Free ARVs (For CD4<200cell/cu.mm. or in symptomatic HIV with CD4<250 cell/cu.mm. )and CD4 monitoring has been available. The first-line regimen is d4T+3TC+NVP in mainly the first time (Naive) patients. CD4 response ), rate of opportunistic infection, and neurological outcomes were measured. Rate of ARV change, adverse events,treatment failure, TB co-infection rate, percent changing to EFV-based regimen or PI-based regimen were recorded. Any Adverse Events including, Sever rash, Severe Hepatitis, Lipid abnormalities, Severe Anemia and Other, common AEs will be analysed.
This study will examine the effects of atorvastatin, a statin (drug that lowers cholesterol) on the human immunodeficiency virus (HIV). If not treated, HIV infection causes an incurable, progressive deficiency in the immune system that leads to death, usually from disease that takes advantage of weakened immunity. Previous studies, however, have suggested that if the amount of cholesterol in infected cells is reduced, multiplication of HIV is also reduced. In this study, researchers will examine the HIV viral loads, that is, amount of the virus in the blood. They will evaluate the composition of the strain of the virus that patients carry (HIV genotype), response of the immune system to the virus, and how genes may determine the way in which the drug may or may not work against the strain of virus. Researchers plan to enroll 22 participants, anticipating a study to last 30 weeks for each participant. Patients ages 18 or older with HIV infection, who are not pregnant or breastfeeding, who do not have a known allergy to atorvastatin use, and who have not had a serious illness or infection that required hospitalization within the 30 days before entering the study may be eligible for this study. They will be assigned to random groups: one that to receive atorvastatin and the other to receive a placebo, which has no effect on cholesterol or ability of the HIV infection to multiply. Patients will remain in their groups and treatments for 8 weeks. At the completion of 8 weeks, no matter the study group, all patients will be required to discontinue all study-related medications for 4 weeks. After that period, the study assignments will be switched, so that those previously taking the placebo will take atorvastatin, and vice versa. The study will proceed for another 8 weeks, followed by a period of stopping study-related medications and patients being observed for 4 weeks. Throughout the study, patients will have regularly scheduled visits at the clinic. At those visits there will be collection of blood samples, assessments of symptoms, physical examinations, and questionnaires to complete. Blood tests may require fasting beforehand, and blood samples will be used in standard tests, including those regarding the liver, kidneys, muscles, blood cells, and pregnancy status. Specialized blood tests will determine viral load, effects of the drug on the immune cells, and genetic influence on the drug's effectiveness.
The efficacy of counseling to prevent infection with the human immunodeficiency virus (HIV) and other sexually transmitted diseases (STDs) has not been definitively shown. This multi-center randomized controlled trial (Project RESPECT) sought to compare the effects of 2 interactive HIV/STD counseling interventions with didactic prevention messages typical of current practice. A total of 5758 STD clinic patients were enrolled from 5 public STD clinics (Baltimore, Md; Denver, Colo; Long Beach, Calif; Newark, NJ; and San Francisco, Calif) between July 1993 and September 1996. Eligible participants were heterosexual, HIV-negative patients aged 14 years or older who came for full STD examinations. Using a block design, participating men and women were randomzied separately to 1 of 3 individual face-to-face interventions. Arm 1 received "enhanced counseling" consisting of 4 interactive counseling sessions based on the Theory of Reasoned Action and Health Belief Model. Arm 2 received "brief counseling", consisting of 2 interactive risk-reduction sessions based on CDC's client-centered counseling model. Arms 3 and 4 each received 2 brief didactic messages about HIV/STD prevention messages typical of current care at that time. Participants assigned to Arms 1, 2, and 3 were actively followed up after enrollment with questionnaires at 3, 6, 9, and 12 months and STD laboratory examinations and tests at 6 and 12 months. An intent-to-treat analysis was used to compare interventions. Arm 4 participants were followed passively to determine potential effects of active study follow-up. The main outcome measures were self-reported condom use and new diagnoses of STDs (gonorrhea, chlamydia, syphilis, HIV) defined by laboratory tests. Results: At the 3- and 6-month follow-up visits, self-reported 100% condom use was higher (P<.05) in both the enhanced counseling and brief counseling arms compared with participants in the didactic messages arm. Through the 6-month interval, 30% fewer participants had new STDs in both the enhanced counseling (7.2%; P = .002) and brief counseling (7.3%;P=.005) arms compared with those in the didactic messages arm (10.4%). Through the 12-month study, 20% fewer participants in each counseling intervention had new STDs compared with those in the didactic messages arm (P = .008). Consistently at each of the 5 study sites, STD incidence was lower in the counseling intervention arms than in the didactic messages intervention arm. Reduction of STD was similar for men and women and greater for adolescents and persons with an STD diagnosed at enrollment. Subset analyses found that Based on these results, we conclude that short counseling interventions using personalized risk reduction plans can increase condom use and prevent new STDs. Effective counseling can be conducted even in busy public clinics.
Herpes infection is an important co-factor in HIV transmission. A recent meta-analysis demonstrated that HSV infection contributed to a 2-fold increased risk of HIV transmission. Suppressive therapy with acyclovir has been a method proposed to reduce HIV transmission. We are conducting a randomized controlled cross-over trial to evaluate the effect of acyclovir suppressive therapy on HIV genital shedding in women co-infected with HIV-1 and Herpes Simplex Virus Type-2 (HSV-2) in Thailand.
The primary purpose of this study is to evaluate the impact of changing didanosine in an effective anti-HIV regimen to tenofovir on virologic suppression. We hypothesize that, in patients with maximal virologic suppression on a double class regimen (including two NRTIs and an NNRTI or a PI, boosted with RTV or not), a single drug substitution of didanosine for tenofovir will represent a viable strategy without any negative impact on the virologic efficacy of the regimen.
Open label, two year study of the clinical efficacy of the combination of FTC, Tenofovir, and Nevirapine. Sixty HIV infected patients without previous exposure to antiretroviral therapy will be enrolled. Study will include a pharmacokinetic substudy to evaluate the interaction of FTC and Nevirapine. Truvada may be used.