Active clinical trials for "HIV Infections"

The purpose of this study is to compare the liver toxicity in HIV-infected patients with chronic hepatitis B and/or hepatitis C, who start a new antiretroviral drug regimen, as well as the influence of the degree of pre-existing liver fibrosis on the incidence of liver toxicity.

The aim of the Post Marketing Study (PMS) is to evaluate the efficacy and safety profile of nevirapine in the management of the HIV/AIDS in an open environment.

The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups. This will enable a practical approach to screening for osteoporosis and the management and prevention of fragility fractures in people with HIV. In addition, all risk factors commonly associated with fragility fractures and osteoporosis are collected, as is HIV drug history. Hence, as secondary outcomes, the associations with reduced bone mineral density can be ascertained.

This will be a pilot, open label study involving 65 participants. All participants will be followed until seroconversion or until the last enrolled participant completes one year of follow-up, whichever happens first. Participant study number will be given at the screening visit, prior to inclusion in the study. The chosen intervention and study regimen are based on the dynamics of viral infection and the pharmacokinetics of the study drugs. In order to inhibit reverse transcription nucleoside and nucleotide analogues need to be phosphorylated intracellularly. On the other hand, available data indicate that it takes approximately 10 hours between exposure and HIV viral integration, offering a window of opportunity for Raltegravir to block integration and thus prevent infection, given that this drug does not need to be metabolized to exert its effect. The intervention will be maintained for 4 weeks following exposure, in accordance with Brazilian and CDC guidelines for PEP.

This is an observational study that seeks to gather information about perceptions of body image through the use of a one-time questionnaire completed by participants at the time of study enrollment. Effective management of Human Acquired Immune Deficiency Syndrome (AIDS) caused by the Human Immunodeficiency Virus (HIV) has become possible through the use of Highly Active Antiretroviral Treatment (HAART). As a result of more successful treatment options, HIV/AIDS has transitioned from a terminal illness to one which is treated as a chronic condition. One particular group that has been impacted tremendously by HIV in the United States is the adolescent population. As youth are living longer with HIV/AIDS, clinicians and researchers are beginning to examine ways in which the disease can affect one's physical health, mental health, and other psychosocial factors. Research emerging involving adults with HIV/AIDS has suggested that increased attention to and negative views of one's body image may be found at a higher rate in this group. To our knowledge, very few studies have examined this relationship in adolescents with HIV.

The proposed research will include adolescent and young adult Hispanic/Latino men who have sex with men (MSM) and heterosexual men and women, aged 13-24 years, and will be based at 13 ATN Adolescent Medicine Trial Units (AMTUs) that provide clinical care and psychosocial services to the target group. In 10 of the 13 sites, comparisons will be made between alternative venue-based testing (AVT) and social and sexual network-based interviewing and HIV testing (SSNIT) strategies to assess which, among these approaches, is the most effective means for identifying undiagnosed human immunodeficiency virus (HIV) in young, at-risk Hispanics/Latinos. Three of the sites will focus solely on use of SSNIT for identifying undiagnosed HIV in our target group of adolescents and young adults. All study participants will complete an audio computer-assisted self-interview (ACASI) and undergo HIV screening. Participants with presumptive HIV positive screening results will be referred to the local AMTU for confirmatory testing, post-test counseling and referrals for linkage to HIV medical care. Linkage to care for ATN 096 study participants will be conducted in accordance with the Strategic Multisite Initiative for the Identification, Linkage, and Engagement in Care of Youth with Undiagnosed HIV Infection (SMILE in CARING for YOUTH) Program (ATN 093), a collaboration of the CDC and NICHD/ATN, to ensure that youth who test positive for HIV as part of this protocol are linked with treatment and care.

Investigators in the Division of Infectious Diseases are carrying out a study to determine if human immunodeficiency virus (HIV)-seropositive patients receiving the Seasonal Influenza vaccination develop an adequate antibody response. The study group will consist of individuals seen in the Infectious Diseases Clinic who are HIV-seropositive and receive the Seasonal Influenza vaccine.

The purpose of this non-interventional study is a description of use of darunavir in daily practice, in retrospective and perspective manner. Darunavir will be prescribed in the usual manner and in accordance with the terms of marketing authorization. The assignment of a patient to a particular therapeutic strategy will not be decided in advance by this study protocol but instead, it will be part of the current clinical practice. The prescription of the medicinal product will be clearly separated from the decision to include the patient in the study. No additional diagnostic or monitoring procedures will be applied to the patients, and epidemiological methods will be used for the analysis of collected data. After having agreed with the patient on starting treatment with darunavir, and provided that all inclusion and exclusion criteria apply, the physician will document the patient's data. Patients will be observed for at least 48 weeks from baseline visit except for those who withdraw from the study earlier. Patients data will be collected at approximately 0, 1, 3 and 6 months after starting treatment and subsequently every 3 months in accordance with routine practice. The expected number of patients to enroll is about 900. The patients will be treated with darunavir according to the Italian label. The patient must be withdrawn from the study if the treatment with darunavir has been stopped. A last evaluation must be documented when possible, and a resistance test will be collected if available for patients discontinuing for virologic failure. At the end of study visit, information on therapy given after darunavir discontinuation will be collected. For patients discontinuing for virologic failure, data will be collected until the end of the present study, and at least two consecutive measurements of viral load after starting new antiretroviral therapy will be collected, if available. All data collected must be the result of the normal medical care of the patient. The patient's baseline data will be collected within the first week before darunavir administration (at Visit 1). For patients already in treatment with darunavir, baseline and follow up data will be collected retrospectively and prospectively. Further data collection will occur approximately at 1, 3, and 6 months and subsequently about every 3 months according to routine practice, after initiating darunavir treatment.

This trial will assess the potential impact of a vaginal ring on condom use by comparing the performance (total clinical failure, clinical slippage, and clinical breakage) of a standard male lubricated latex condom when the female partner is wearing the vaginal ring and when the female partner is not wearing the vaginal ring.

Microbicides are topical medicines that can prevent infection by Human Immunodeficiency Virus (HIV). Microbicide medicine has yet to be studied in adolescents, a key group that is becoming infected with HIV all over the world. From past research, we know that at different ages people experience age-related changes in their bodies that can cause differences in how they process medications. In this study, gut tissue samples (or gut biopsies) from 12 HIV-negative volunteers will be collected. These pieces of tissue will be infected with HIV in the laboratory to develop a model that can be used to test certain drugs against the HIV infection. We can use this tissue to test a drug called tenofovir against HIV infection. We will determine whether this drug can decrease HIV infection in the gut biopsies. In this study, we will also measure HIV levels and the levels of tenofovir in gut and blood samples in 12 people who are already taking this drug. This information can determine whether levels of drug found in the gut can protect it from HIV. The results can be compared to other age groups of adolescents and adults. Subjects will undergo a common procedure called a lower endoscopy (this can be a colonoscopy or a flexible sigmoidoscopy) to obtain gut biopsy samples. The central hypothesis is that tissue drug profiles of tenofovir (TFV) and its active component, tenofovir disoproxil fumarate (TDF), and tissue infectibility vary between younger (10-14 years old) versus older adolescents (18-21 years old), and that both differ from adults (>21 years). Specifically, younger HIV positive adolescents will have lower levels of tissue tenofovir compared to older HIV positive adolescents and adults in an age-dependent manner. Additionally, biopsies from younger HIV negative adolescents will have: 1) higher rates of infection compared to biopsies from older HIV negative adolescents infected with a lower dose of virus; and 2) lower percent suppression of tissue infectivity compared to biopsies from older HIV negative adolescents using low dose tenofovir.