View clinical trials related to HIV Dementia.
Filter by:The purpose of this study is to longitudinally characterize and evaluate changes in synaptic density in the brain using novel positron-emission tomography (PET) scans; magnetic resonance imaging (MRI), and clinical laboratory markers associated with HIV-related injury in the central nervous system. This study will test hypotheses relating to the presence and mechanisms of aberrant brain structure at the synaptic level in living humans with virologically controlled HIV on antiretroviral therapy. To evaluate associations between PET imaging radiotracers [11C]UCB-J, a ligand for presynaptic vesicle protein 2A (SV2A), a vesicle membrane protein expressed in synapses, and PET [11C]PBR28 a measure of microglia function in the brain, the Yale PET center has developed an advanced approach of combining multiple distinct ligands in coordinated same-day PET imaging. Additionally, the study will evaluate the associations of this novel synaptic density marker with well-established clinical measures of neurocognitive performance and laboratory measures of blood and cerebrospinal fluid (CSF).
Currently 37.9 million people are living with human immunodeficiency virus (HIV) around the world (UNAIDS, 2018). Even with antiretroviral treatment (ART), the virus enters the central nervous system and can affect the following structures: amygdala, hippocampus, thalamus, parietal, frontal, temporal regions, orbitofrontal, cingulate, motor and sensory cortex; generating cognitive, behavioral and motor alterations, up to HIV-associated neurocognitive disorder (HAND) and occasionally HIV-associated dementia (HAD). Few clinical studies have been conducted using computerized cognitive rehabilitation programs to counteract neuropsychological alterations. The aim of this project is to explore the feasibility of a cognitive stimulation program (CSP) developed to strengthen cognitive domains identified as impaired through a neuropsychological assessment in asymptomatic HIV+ patients adherent to ART, with the purpose of improving their quality of life and mood disorder.
This study is being done to see if a drug called long acting methylphenidate (Concerta) is safe and effective as a treatment for problems with mental function in adults infected with HIV. A subset of patients with HIV-associated memory loss have a defect in the speed with which they learn and process information. Methylphenidate drugs, such as Ritalin or Concerta, have been shown on tests to improve the ability to rapidly absorb information; these tests are called "reaction time tests". These drugs are already FDA-approved to treat Attention Deficit Disorders: ADD or ADHD. At baseline, all subjects get tests of memory and brain function; then they are split into two groups. One group on this study will receive Concerta for 2 weeks, and a second group will receive a placebo x 2 weeks. After that period both groups will receive memory and other tests of brain function, and then the groups will switch. The first group will receive placebo and the second will receive Concerta x 2 weeks, followed by more memory and neurological tests. After that all subjects will have the option to receive Concerta for free for 8 more weeks. At the last visit all subjects get memory and brain tests again.