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266 active trials for Aging

Blood-Brain Barrier Disruption in People With White Matter Hyperintensities Who Have Had a Stroke

Background: A stroke occurs when not enough blood reaches the brain. Sometimes stroke causes changes in certain brain matter. This is called white matter hyperintensity (WMH) and can lead to mental decline. But not all WMH is caused by stroke. Not all people with WMH experience mental decline. Researchers want to learn more about WMH. They want to see if it is related to disruptions in the blood-brain barrier. Objective: To better understand the how blood-brain barrier disruption is related to white matter hyperintensities. Eligibility: Adults at least 18 years old who have been admitted to a study site with stroke-like symptoms Design: Participants will be screened with an MRI scan and cognitive tests. Participants will have 11 visits over 6 years. Each visit will be 3 4 hours. At each visit, participants will: Update their medical history Have a thin plastic tube (catheter) inserted into an arm vein by needle Have an MRI. The scanner is a metal cylinder in a strong magnetic field. Participants will lie on a table that slides in and out of the cylinder. Participants will be in the scanner about 60 minutes, lying still for up to 20 minutes at a time. They will get earmuffs for loud sounds. Have a dye injected through the catheter during the MRI Have tests of movement, language, and cognition Some participants will have an extra visit for an MRI in a stronger scanner (7T MRI). Participation for some participants will be authorized by their legal representative.

Start: September 2018
Comprehensive Geriatric Assessment in the Monitoring of Functional Improvement

14.44% of the Spanish population is over 70 years old and Aging as a normal process is characterized by gradual modifications in the physiological functions of the different systems, so that as age progresses, deterioration can lead to imbalances and alterations in health that cause diseases or traumatic processes. Within these processes, vestibular loss occurs normally in the face of healthy aging and, encompassed within this progressive dysfunction, various symptoms such as dizziness, imbalances, facial and limb weakness, confusion or headache may occur. Functional status is the best indicator of the overall health status of the elderly person. Identifying these indicators as soon as possible is the best way to prevent functional decline and promote active aging and life expectancy free of disability. For this reason, there are strategies that are currently a priority in health systems. The special COVID circumstances eliminate the possibility of group work and invite the realization at home or individually of workshops or collective exercises In the field of physiotherapy, vestibular exercises have shown efficacy for improving balance and reducing the risk of falls in cognitively intact people without vestibular impairment, being a specific approach to vestibular rehabilitation for the reduction of dizziness and imbalances , as it facilitates the compensation of the Central Nervous System. physiotherapy intervention has been shown in various studies to be effective in improving balance and reducing the risk of falls in older people. Also considering that the control of body balance in the elderly depends not only on the vestibular system, but also on the correlations between all the other systems, it seems interesting to add exercises with multiple components, since it would add effects of improvement in functional independence of people greater for daily activities and control of body balance. Therapeutic physical exercise is an effective non-pharmacological strategy to improve the functional condition of the elderly and although it is known that there are various exercise modalities that improve physical function and quality of life, The Clinical Practice Guidelines emphasize the importance of multicomponent / multimodal exercise for this population group

Start: June 2021
Neuroinflammation and Neurodegeneration in HIV-positive Subjects Switched and Initially Treated With INSTI

Since the HIV changed its course to the chronic disease, high incidence of metabolic syndrome both in HIV positive and negative subjects has become an issue. Given the successful peripheral suppression of HIV after introduction of combined antiretroviral therapy (cART), comorbidities associated with aging and cognitive functioning, play the main role in the overall quality of life and adherence to the therapy. Continuous low-level neuroinflammation results in continuous and diffuse neuronal death or dysfunction leading to a certain level of neurodegeneration. Additionally, metabolic syndrome contributes to neurodegeneration causing damage to the brain vasculature and provoking the ischemic incidents. The aim of this study would be to explore the influence of switching to the INSTI based cART using neuroimaging biomarkers of inflammation and neurodegeneration. The second aim would be to monitor these neuroimaging biomarkers in patients receiving INSTI-based cART in a one-year follow-up period. Additionally, we would compare the markers of metabolic syndrome and cognitive functioning (executive functions) in HIV-positive patients after switching to INSTI-based cART and in HIV-positive patients receiving INSTI-based cART from the start. This study represents a single-center, prospective, interventional, two-armed single study. Arm I will include 60 patients on PI/EFV based ART, stable on treatment, who are switched to INSTI based regimen at the beginning of the study due to side effects or long-term toxicities like hyperlipidemia, diarrhea, (PI), insomnia, headache (EFV), high Framingham score (PI/EFV). Arm II will include 60 patients initially on INSTI-based ART, stable on treatment. The same data sets will be collected for both groups of patients. The variables collected will be related to metabolic syndrome (levels of LDL and HDL cholesterol, triglycerides, fasting insulin, glucose, blood pressure, waist circumference, waist to hip and waist to height ratio), performance on neurocognitive tests and MR spectroscopy neuroinflammation and neurodegeneration markers at the beginning of the study, as well as in 12 months follow up. Presence of steatosis and visceral fat thickness will be assessed using ultrasonography of abdomen. The primary imaging will be performed at the time of enrollment of patients, along with the neurocognitive testing and blood sampling. The secondary imaging (follow up) will be performed 12 months after the initial, also followed by neurocognitive assessment and blood sampling. Anthropometric measurements will be acquired at the time of blood sampling. Statistical analysis will be performed after collecting the data. Our work could significantly contribute to the better life quality in the aging of HIV positive subjects in the domain of cognitive functioning, tightly associated with adherence and overall life quality.

Start: May 2021