View clinical trials related to HIV Infection.
Filter by:A switch to a regimen consisting of ATV/RTV 300/100 mg QD + 3TC 300 mg QD in HIV-1 infected subjects in their first antiretroviral regimen and who are virologically suppressed on a regimen which consists of 2 NRTIs + any 3rd agent, is non-inferior to continue or switch to ATV/RTV 300/100 mg QD + 2 optimized NRTIs for maintenance of virological suppression.
The investigators' in vitro data suggest that Neurokinin-1 receptor antagonists like aprepitant will decrease the expression of CCR5, an essential co-receptor in the life cycle of HIV, in the surface of macrophages and lymphocytes to levels at least similar to those observed in patients heterozygous for the CCR5 32 mutation. Together with a direct potential antiviral effect this could alter disease progression in patients with HIV infection. The investigators' hypothesis is that aprepitant is safe, tolerable and has antiviral activity in HIV infected individuals. This is randomized, placebo controlled, double blind study to determine the safety and antiviral activity of aprepitant by comparing the change in HIV RNA viral load after 2 weeks of aprepitant monotherapy. 18 HIV infected males and females ≥ 18 years old who have early infection with CD4 cell counts ≥ 350 cells/mm3. Subjects will be randomized 1:1 to receive 375 mg of aprepitant (Emend®) or placebo.
Liver-related death is the leading cause of mortality in HIV-infected individuals with CD4+ cell counts over 200, and hepatitis C virus (HCV) infection is the greatest risk for liver-related mortality in HIV-positive patients. Compared to HCV monoinfected individuals, patients with HIV and HCV coinfection experience accelerated progression of liver fibrosis, which can lead to higher incidence of cirrhosis, end stage liver disease (ESLD), and death. Changes in CD8+ T-cell activation, inflammatory cytokines, and serum markers of tissue injury may offer an immunologic platform to determine factors associated with progressive liver fibrosis in coinfected patients. In this cross-sectional study we will evaluate whether HIV and HCV coinfection patients with well-controlled HIV infection who have an undetectable viral load exhibit abnormal levels of inflammation and immune activation, potentially contributing to advanced liver fibrosis. Comparative groups include coinfected patients successfully treated for hepatitis C, or who have absence of hepatitis C viremia through spontaneous clearance, hepatitis C monoinfected patients, and HIV-positive patients with well-controlled HIV infection without hepatitis C. Liver fibrosis will be measured by non-invasive methods. The primary objectives of this study are: 1. To determine if there are differences in markers of inflammation and immune activation in subsets of patients with HIV, hepatitis C, and HIV and hepatitis C coinfection. 2. To assess the stage of liver fibrosis using non-invasive methods in subsets of patients with hepatitis C and HIV and hepatitis C coinfection and compare the degree of liver fibrosis with levels of inflammation and immune activation.
Background: - Antiretroviral therapy (ART) has been able to improve the lifespan of individuals infected with human immunodeficiency virus type 1 (HIV-1), but ART requires continuous treatment that has substantial consequences on quality of life. Recent research is attempting to determine whether this persistent infection stems from a low-level infection where new cells are continually infected with HIV, or from cells that live for a long time after infection. ART is very active against the virus in new cells, but has no effect on long-lived cells that are already infected with HIV-1 at the start of ART. As a result, new strategies may be necessary to reduce or eradicate these 'reservoir' cells. - Interferon is a natural substance made by the body to combat virus infections, and can be made as an injectable drug known as PEGINTRON. Researchers are interested in determining whether PEGINTRON therapy will also reduce the residual low levels of HIV in patients who are already taking ART. Objectives: - To evaluate the effectiveness of PEGINTRON injections on HIV levels in participants currently undergoing antiretroviral therapy. Eligibility: - Individuals at least 18 years of age who have been diagnosed with HIV, are currently undergoing antiretroviral therapy, and have maintained HIV virus blood counts that are not detectable by current commercial tests for at least 12 months before the start of the study. Design: - This study will involve separate screening and treatment processes. - Participants will be screened with a physical examination and medical history, including blood and urine samples. The screening analysis to determine study eligibility will take several weeks. Participants will have apheresis to provide sufficient numbers of blood cells for evaluation by the study researchers. - Eligible participants will begin a 4-week course of PEGINTRON injections using the standard dose of PEGINTRON that is approved for treatment of chronic hepatitis C. Participants will have weekly injections and have frequent blood tests to measure HIV virus levels. - Participants who experience problems in maintaining safe numbers of white blood cells during the study may receive injections of filgrastim to increase their white blood cell count. - After the 4 weeks of treatment, participants will return for additional blood tests on study days 28, 35, 42, 49, 56, and 84, and Weeks 16, 24, 36, and 48 (i.e., through the end of 1 year after the start of the study).
The treatment of HIV and the tests performed for HIV care have changed over the last 20 years. However, improvement of management of HIV-infected subjects is still warranted, especially as the HIV-infected population is aging. Therefore, this study will involve the collection and analysis of clinical information obtained from subjects who are over 50 years of age. For example, patients' risk of heart disease will be measured and monitored by looking at blood tests and clinical data (such as blood pressure). This will allow researchers to understand if the current way of assessing the risk of future heart disease is the best one available for HIV-infected individuals. No genetic research will be done.
The chief purpose of this research is to evaluate interferon alpha sensitivity and cell type specific levels of interferon receptor and interferon stimulated genes and proteins in HIV/ HCV (hepatitis C virus) coinfected persons before and after administration of HIV medications (antiretroviral therapy).
TMC278 (also called rilpivirine) is a new drug being developed to treat HIV. Usually TMC278 is taken as a tablet, by mouth, once a day, but a 'long acting' formulation has been developed so the drug stays in the bloodstream for a longer time - this allows the drug to be given by injection and less often. It is hoped that this injectable version of the drug may be used to help prevent HIV transmission in the future by giving it to people who are at risk of HIV. This is similar to the way travellers to areas with malaria may take antibiotics to prevent infection. The investigators aim to investigate the feasibility of using TMC278 as a preventative medication by performing this study. The purpose of this study is to investigate the levels of drug which can be measured in the blood, as well as the tissues and fluids of the rectum (the lowest part of the bowels just before the opening of the anus) as well as the safety of the drug and how well tolerated it is when given as a single dose. In this study, the investigators will not be investigating whether the drug prevents HIV so the investigators will recruit people who are HIV negative, and whose lifestyle does not put them at risk of becoming infected before or during the study. If the study shows the drug is well tolerated and produces appropriate levels of the drug (in the bloodstream and the rectal compartment) to suggest that it could be effective, it will help design future studies looking at preventing HIV.
Safety and efficacy are key issues in antiretroviral therapy (ART) selection. Efavirenz (EFV) is an important component of combination ART in treatment naive individuals. Like many drugs, there are inter-individual differences in the efficacy and tolerability of EFV. The Encore1 study provides an opportunity to examine the pharmacokinetics (PK)(processes by which a drug is absorbed, distributed, metabolized, and eliminated by the body) of EFV in blood samples collected over a 24-hour dosing interval in participants receiving either standard 600 mg or reduced 400 mg dose EFV once daily.
African American men who have sex with men and women (AAMSMW) are at particular risk for contracting and transmitting HIV, and represent a priority population for developing effective interventions. Despite the urgent need for effective prevention approaches for AAMSMW, to our knowledge no evidence-based HIV interventions have been developed and tested for this population. This study is a randomized controlled trial of the Bruthas Project(BP), an individual-level HIV prevention intervention, which builds on standardized HIV counseling and testing. Delivered in a series of four sessions by trained African American male counselors, the BP focuses on reviewing HIV transmission routes for male and female partners, strengthening sexual communication skills with both male and female partners, and improving condom use skills and other safer sex negotiation strategies. A randomized controlled trial of BP is necessary to determine the efficacy of the intervention and can lead to improved public health efforts at reducing HIV risk behavior among AAMSMW and in the African American community more generally. To evaluate the effect of the BP, the investigators will recruit and enroll a cohort of 400 AAMSMW who will be randomly assigned to either the intervention condition, in which they will be offered BP, or to the comparison condition, in which they will receive standardized HIV testing and counseling with referral to case management. The investigators will follow the cohort over 9 months and will assess participants at three time points: baseline, 3 months follow-up, and 6 months follow-up.
Background: With the improvement of the prognosis for HIV-infected infants, thanks to the availability of antiretroviral therapies, young adults infected with HIV since birth are becoming an emerging group among the HIV-infected population. Morbidity, mortality and immunovirological evolution in these young adults need to be studied in a large population and compared to patients infected with HIV later in adulthood or to the general population in terms of mortality. Moreover, the study of accelerated or premature ageing, linked to HIV and/or antiretroviral therapy, is particularly interesting in this population. Objectives: To study the transition to adulthood and the further evolution of HIV-1 or -2 perinatally infected young adults: 1) To study the teenager to adult transition in terms of clinical and immunovirological status, schooling and professional integration, sexuality and reproductive life, transition from paediatrics to adult departments; 2) To study prognosis, morbidity and mortality according to age, infection stage at the time of antiretroviral initiation and therapeutic history; 3) To study the incidence and expression of adverse events and the potential link to antiretroviral therapies; 4) To study the markers of a potential premature ageing, from the metabolic, cardiovascular and immunological points of view.