View clinical trials related to HIV Infections.
Filter by:This study will evaluate the effectiveness of a specialized cognitive-behavioral counseling intervention in reducing sexual risk behaviors in men who are HIV-infected and report having unprotected sex with male partners who are either not HIV-infected or do not know if they are HIV-infected.
This study will evaluate the effectiveness of a single specialized pre-test counseling session in reducing HIV infection risk behavior in men who are not HIV infected.
The purpose of this study is to conduct a randomized controlled trial to assess the efficacy of a peer-educator intervention focused on injection drug users and their drug and sexual networks. We expect that participants who receive the intervention will demonstrate a reduction in the rate of HIV infection and HIV risk behaviors and members of their risk network will also demonstrate reductions in risk behaviors compared to those in the control group.
Objectives: Primary To compare the sustained virologic response (SVR) of PEGIntron plus ribavirin among patients receiving 48 weeks versus 72 weeks of therapy (defined as undetectable HCV RNA level 24 weeks after discontinuing therapy). Secondary - To evaluate the safety and tolerability PEG Intron in combination with ribavirin for treatment of Chronic Hepatitis C (CHC) infection in patients co-infected with Human Immunodeficiency Virus (HIV). - To determine the early virologic response of patients receiving PEGIntron plus ribavirin at Treatment Week 24 Study Design: All qualifying patients will enter the treatment phase and be dosed as follows: Peginterferon a-2b 1.5mg/kg by subcutaneous route once weekly plus Ribavirin: - 800 mg (400 mg bid) if body weight < 65 kg - 1000 mg (400 mg a.m. and 600 mg p.m.) if body weight > 65 kg and < 85 kg - 1200 mg (600 mg bid) if body weight > 85 kg and < 105 kg - 1400 mg (600 mg a.m. and 800 mg p.m.) if body weight > 105 kg At Treatment Week 24, all participants with detectable HCV-RNA will be discontinued from treatment and followed for a Post Treatment period of 24 weeks. Participants with undetectable HCV-RNA values at Treatment Week 24 will be randomized to either: - Group A: an additional 24 weeks of previously assigned Peginterferon a-2b + Ribavirin therapy, for a total of 48 weeks of treatment. - Group B: an additional 48 weeks of previously assigned Peginterferon a-2b + Ribavirin therapy, for a total of 72 weeks of treatment. Study Population: 300 HIV infected adults with chronic hepatitis C infection who have not been treated previously with interferon therapy. Dosage and Administration: Peginterferon a-2b 1.5mg/kg by subcutaneous route once weekly plus Ribavirin: - 800 mg (400 mg bid) if body weight < 65 kg - 1000 mg (400 mg a.m. and 600 mg p.m.) if body weight > 65 kg and < 85 kg - 1200 mg (600 mg bid) if body weight > 85 kg and < 105 kg - 1400 mg (600 mg a.m. and 800 mg p.m.) if body weight > 105 kg Efficacy Evaluations: Laboratory analysis, liver biopsies, quality of life assessments, and changes in Peginterferona-2b and Ribavirin dosages will be obtained. Safety Evaluations: - Assessment of laboratory evaluations - vital signs - incidence and severity of adverse experiences - dose adjustments - premature withdrawal for safety reasons - progression of disease as measured by HCV viral load - AIDS defining events
Once-daily nucleotide/nucleoside reverse transcriptase inhibitor (NtRTI/NRTI) combinations form the backbone of many regimens. Although efficacy data exists between tenofovir and the pyrimidine analogues (i.e. lamivudine and emtricitabine), recent clinical data suggests a potential interaction between tenofovir and purine analogs (i.e. abacavir and didanosine). Specific Aim 1: To evaluate the impact of an acyclic nucleoside phosphonate, tenofovir (TDF), on the intracellular metabolism of a purine nucleoside analog, abacavir (ABC), as a determinant of the antiviral potency of this nucleotide/nucleoside reverse transcriptase inhibitor (NtRTI/NRTI) combination. - Hypothesis #1: ABC and TDF dosed together will have reduced antiviral activity, as measured by early plasma HIV RNA decay kinetics, than the drugs given alone. - Hypothesis #2: ABC dosed with TDF will have reduced intracellular concentrations, as measured by the ratio of carbovir triphosphate (active metabolite of ABC) to deoxyguanosine triphosphate (endogenous nucleotide), compared to ABC given alone.
The purposes of this study are to determine whether Carraguard® Gel can prevent the transmission of HIV when used during vaginal intercourse, and to confirm that the gel is safe for vaginal use.
The primary aims of the study were to assess the safety and acceptability of Carraguard applied vaginally prior to sexual intercourse for six months in both women and men; and to examine several dimensions of acceptability. Secondary aims were to gauge reactions to a non-contraceptive microbicide, to assess use dynamics among Thai couples and to observe preliminary indications of sexually transmitted infections and reproductive tract infections averted. The hypothesis was that Carraguard would cause little or no significant irritation, including lesions; and that women and men would find Carraguard acceptable.
Randomized, controlled, double-blinded, cross-over trial of 60 HIV-infected women recruited from general medical clinics, family planning clinics, groups/organizations working with persons living with AIDS to assess product safety, effect on genital tract HIV shedding, and product acceptability with vaginal use of Carraguard gel among HIV-infected women. Women had to be abstinent or in a seroconcordant relationship with only one partner for the study period.
The primary aims of the study were to assess the safety and acceptability of PC-515 when applied vaginally at least three times weekly for 12 months. Secondary aims were to gather preliminary data on Carraguard's effectiveness in preventing male-to-female transmission of HIV, and other STIs. The hypothesis was that Carraguard would cause little or no significant irritation, including lesions; and that women would find Carraguard acceptable. The study was not powered to determine effectiveness, but based on safety, acceptability and feasibility parameters, the outcome of the Phase 2 trial would enable a decision whether or not to proceed to a Phase 3 trial.
The primary aims of the study were to assess the safety and acceptability of Carraguard ™ (PC-515) when applied vaginally at least three times weekly for 6-12 months. Secondary aims were to gather preliminary data on Carraguard's effectiveness in preventing male-to-female transmission of HIV. The hypothesis was that Carraguard would cause little or no significant irritation, including lesions; that women would find Carraguard acceptable. The study was not powered to determine effectiveness, but based on safety, acceptability and feasibility parameters, the outcome of the Phase 2 trial would enable a decision whether or not to proceed to a Phase 3 efficacy trial.