Clinical Trials Logo

Clinical Trial Summary

The purpose of this study is to compare immune system activity in young people and older people who do not have HIV. This information will be compared to that of HIV patients in another study.

Aging affects immune system activity. This study will look at some of the factors involved. HIV also affects immune system activity. The results from this study, using healthy volunteers, will be compared to those in another study of HIV-infected patients. This may provide information on immune system activity in aging and HIV.


Clinical Trial Description

Aging is associated with declines in both cellular and humoral immunity. A consistent observation of the aging immune system is a change in T cells. Another possible mechanism of diminished cellular immunity associated with age includes accelerated lymphocyte apoptosis. Enhanced lymphocyte apoptosis may play an important role in the pathogenesis of HIV disease. This study will use healthy volunteers to confirm and expand upon such observations. Samples from these volunteers will serve as controls to those from the HIV-infected participants of A5015 (a comparison study of 2 age-differentiated cohorts to determine potential mechanisms that might contribute to accelerated HIV-disease progression that is associated with aging).

This is a non-treatment study; however, volunteers receive hepatitis A and tetanus vaccinations. Numbers of phenotypically naive CD4+ cells (CD45RA+/CD62L+) are compared between healthy, HIV-seronegative volunteers and HIV-seropositive patients of A5015. An array of assays to assess baseline differences in immune function between these study populations are performed. Expression of markers of activation are compared by measuring the coexpression of HLA-DR+/CD38+ and CD28+ on CD4+ and CD8+ lymphocytes between these populations. To investigate possible age-associated differences in apoptosis, Fas (CD95+) expression is measured on CD4+ and CD8+ T cells by flow cytometry, and spontaneous apoptosis is assessed using the propidium iodide method. DTH hypersensitivity to skin test antigens, lymphocyte proliferation to mitogens, soluble antigens, recall antigens, and neoantigens are compared between the 2 populations. Antibody responses to vaccination with tetanus and hepatitis A are assessed. Finally, thymic size as measured by CT scan and the frequency of T cells that contain TRECs is compared between these 2 populations. ;


Study Design

N/A


Related Conditions & MeSH terms


NCT number NCT00014053
Study type Observational
Source National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status Completed
Phase N/A

See also
  Status Clinical Trial Phase
Completed NCT05454514 - Automated Medication Platform With Video Observation and Facial Recognition to Improve Adherence to Antiretroviral Therapy in Patients With HIV/AIDS N/A
Completed NCT03760458 - The Pharmacokinetics, Safety, and Tolerability of Abacavir/Dolutegravir/Lamivudine Dispersible and Immediate Release Tablets in HIV-1-Infected Children Less Than 12 Years of Age Phase 1/Phase 2
Completed NCT03141918 - Effect of Supplementation of Bioactive Compounds on the Energy Metabolism of People Living With HIV / AIDS N/A
Completed NCT03067285 - A Phase IV, Open-label, Randomised, Pilot Clinical Trial Designed to Evaluate the Potential Neurotoxicity of Dolutegravir/Lamivudine/Abacavir in Neurosymptomatic HIV Patients and Its Reversibility After Switching to Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide. DREAM Study Phase 4
Recruiting NCT04579146 - Coronary Artery Disease (CAD) in Patients HIV-infected
Completed NCT06212531 - Papuan Indigenous Model of Male Circumcision N/A
Active, not recruiting NCT03256422 - Antiretroviral Treatment Taken 4 Days Per Week Versus Continuous Therapy 7/7 Days Per Week in HIV-1 Infected Patients Phase 3
Completed NCT03256435 - Retention in PrEP Care for African American MSM in Mississippi N/A
Completed NCT00517803 - Micronutrient Supplemented Probiotic Yogurt for HIV/AIDS and Other Immunodeficiencies N/A
Active, not recruiting NCT03572335 - Systems Biology of Diffusion Impairment in Human Immunodeficiency Virus (HIV)
Completed NCT04165200 - Fecal Microbiota Transplantation as a Therapeutic Strategy for Patients Infected With HIV N/A
Recruiting NCT03854630 - Hepatitis B Virus Vaccination in HIV-positive Patients and Individuals at High Risk for HIV Infection Phase 4
Terminated NCT03275571 - HIV, Computerized Depression Therapy & Cognition N/A
Completed NCT02234882 - Study on Pharmacokinetics Phase 1
Completed NCT01618305 - Evaluating the Response to Two Antiretroviral Medication Regimens in HIV-Infected Pregnant Women, Who Begin Antiretroviral Therapy Between 20 and 36 Weeks of Pregnancy, for the Prevention of Mother-to-Child Transmission Phase 4
Recruiting NCT05043129 - Safety and Immune Response of COVID-19 Vaccination in Patients With HIV Infection
Not yet recruiting NCT05536466 - The Influence of Having Bariatric Surgery on the Pharmacokinetics, Safety and Efficacy of the Novel Non-nucleoside Reverse Transcriptase Inhibitor Doravirine N/A
Recruiting NCT04985760 - Evaluation of Trimer 4571 Therapeutic Vaccination in Adults Living With HIV on Suppressive Antiretroviral Therapy Phase 1
Completed NCT05916989 - Stimulant Use and Methylation in HIV
Terminated NCT02116660 - Evaluation of Renal Function, Efficacy, and Safety When Switching From Tenofovir/Emtricitabine Plus a Protease Inhibitor/Ritonavir, to a Combination of Raltegravir (MK-0518) Plus Nevirapine Plus Lamivudine in HIV-1 Participants With Suppressed Viremia and Impaired Renal Function (MK-0518-284) Phase 2