Active clinical trials for "Cognitive Dysfunction"

Basic information and biological samples of patients were collected preoperatively and intraoperatively, and patients were divided into case and control groups by cognitive function assessment postoperatively, and risk factors and biomarkers of perioperative cognitive dysfunction were derived by analyzing and statistically processing basic information and biological samples.

The goal of this observational study is to compare the perioperative EEG characteristics and the incidence of short-term cognitive dysfunction in patients with postoperative delirium and non-postoperative delirium after elderly (> 65 years old) patients undergoing major gastrointestinal surgery under general anesthesia. The main question it aims to answer are: • The correlation between postoperative cognitive dysfunction and postoperative EEG features was evaluated.• To analyze the correlation between EEG characteristics and clinical risk factors of delirium after major abdominal gastrointestinal surgery under general anesthesia in elderly patients.Participants will collect EEG before and after operation and collect the incidence of postoperative cognitive function to explore the mechanism of postoperative delirium and predict postoperative cognitive dysfunction.

Background: Creatine transporter deficiency (CTD) is a genetic disorder that mainly affects the brain in males. CTD causes intellectual disability that can be mild to severe. People with CTD may have seizures and behavioral issues. They may have slow growth and tire easily. CTD may sometimes be confused with autism or other disorders. Better diagnostics are needed. The study team in an NIH study noted that the faces of children with CTD can look similar. For this natural history study, an expert will examine photos of children with CTD. Any shared traits found might help to diagnose CTD. Objective: To look for shared facial features of children with CTD. Eligibility: Males aged 2 to 40 years old with CTD who were in study 17-CH-0020. Design: Some participants in study 17-CH-0020 had pictures taken of their faces. The NIH study team wants to share these photos with a colleague in Canada. This person is an expert at evaluating how genetic disorders affect people s bodies. Participant data collected during the study may also be sent to this expert. This data may include diagnostic images and results from lab tests. Some children did not have their pictures taken during study 17-CH-0020. Parents are asked to take pictures of these children and send them to the study team. These photos can be sent to a secure portal. The photos can also be taken in-person during a clinic visit. The photos may be printed in clinical study journals. But this is not required. Parents will be asked to sign a separate consent before the photos are published.

Late-life depression (LLD) is associated with disability, increased risk for cognitive decline and dementia, elevated suicide risk, and greater all-cause mortality. These outcomes are related to depression being a recurrent disorder, with repeated episodes over a patient's lifetime. Recurrence rates (defined as including both relapse and recurrence) are high in LLD. The goals of this study are to identify neurobiological factors that predict recurrence risk, and examine how cognitive performance changes are both influenced by these neurobiological factors and also predict recurrence risk.

We will conduct a Tau PET scan in cognitively normal older adults, enrolled in the Aging Brain Cohort Dedicated to Diversity Study (ABCD2-Tau) study at the University of Pennsylvania's Penn Memory Center/Alzheimer's Disease Core Center (PMC/ADC).Study duration will generally be a one-day study visit for PET imaging, but all subjects will be followed annually as part of their participation in the ABCD2 study. Findings from this study will likely provide insight into the mechanisms and distinctions of age-related cognitive decline and that of preclinical Alzheimer's Disease.

This is a pragmatic, multi-center, prospective, observational, non-interventional study and standing database of patients seen at the training institution for cognitive impairment diagnosed with Mild Cognitive Impairment (MCI) or Dementia. All patients seen at the training institution clinically diagnosed with MCI or dementia by their neurologists will be invited to participate in the study. The investigators will confirm the diagnosis and will explain the study as well as the patient information sheet to the patient and/or legal representative. All eligible patients seen will be assigned a study identification number. Data will be collected by the investigators as the patient undergoes routine clinical evaluation. Corresponding anonymized data on demographics, medical history and risk factors, level of functional impairment, diagnosis, baseline cognitive scores and management will be collected from each patient and entered in the database using a secure online data collection tool.

This study will compare the discriminative power of [18F]-SynVesT-1 PET and the standard-of-care [18F]-FDG PET in different cognitive disorders (Alzheimer's disease, Frontotemporal degeneration, dementia with Lewy bodies and late-life psychiatric disorders). Moreover, changes in [18F]-SynVesT-1 PET will be evaluated as well as their correlation with specific symptomatology.

Over the past ten years, the number of endovascular procedures has increased by 5% per year in Europe with the development of interventional cardiology, such as percutaneous coronary angioplasty, aortic valve replacements (TAVR), and vascular endoprosthesis. The neurological lesions detected on cerebral MRI caused by these endovascular procedures are frequent with an incidence of about 30-70%. These events, although subclinical, have an impact on morbidity and mortality and especially on long-term cognitive decline. TAVR is the reference treatment for symptomatic elderly patients with stenosis of the aortic valve, considered by a multidisciplinary "Heart Team" as at high surgical risk due to comorbidities, age and high perioperative risk scores ( Euroscore 2 and STS scores). Despite the net clinical benefit, an increase of silent neurological events was detected on post-procedural cerebral MRI with an incidence of approximately 70%. The epigenetic involvement in the occurrence of ischemic cerebral lesions is still largely unknown. Epigenetic mechanisms, such as DNA methylation, can be associated with aging processes and modulate the risk of developing cerebrovascular pathologies. They are likely to provide new biomarkers that predict the risk of brain damage. Hypomethylation of leukocyte DNA is directly related to atherosclerosis in humans. This hypomethylation of DNA would represent an easily measurable marker reflecting the presence and progression of atherosclerosis. Because atherosclerotic lesions often precede the clinical manifestation of ischemic cardiovascular disease, such as ischemic heart disease and stroke, DNA hypomethylation could be used to identify individuals at risk for cerebrovascular events. The investigator hypothesize that hypomethylation of leukocyte DNA can predict the risk of developing new ischemic brain lesions especially after a TAVI procedure.

The main objective of this research project is to provide a comprehensive clinical database of patients with Alzheimer's disease (AD) and other forms of dementia, individuals with mild cognitive impairment (MCI), and age-matched normal controls. The study will also attempt to identify cognitively normal individuals at genetically defined risk for Alzheimer's disease through genetic screening. All participants are seen annually. Autopsies to establish diagnoses in patients with dementia, patients with mild MCI, and cognitively normal elderly control subjects will also be conducted.

The study has 10 research questions regarding the cognitive training program and tablet-based interactive games: Primary study questions: Can the participation of 12-week cognitive training program using tablet-based interactive games maintain cognitive functioning? Secondary study questions: Can the participation of 12-week cognitive training program using tablet-based interactive games improve the scores of 6 supplier-developed cognitive domains (including executive function, memory, eye-hand coordination, attention, visual-spatial ability, language)? Can the participation of 12-week cognitive training program using tablet-based interactive games improve the reaction time of the participants? What is the attendance rate in the cognitive training program, and for how long do the participants play the tablet-based interactive games? What is the usability and acceptability of the tablet-based interactive games? Auxiliary study questions: Can the participation of 12-week cognitive training program using tablet-based interactive games reduce neuropsychiatric symptoms? Can the participation of 12-week cognitive training program using tablet-based interactive games improve upper-body flexibility? What are the physical side effects of using digital devices in the 12-week cognitive training program? What are the perceived benefits and feasibility of the cognitive training program and tablet-based interactive games? Can the participation of 12-week cognitive training program using tablet-based interactive games improve activities of daily living of persons with intellectual disability?