View clinical trials related to Cognitive Dysfunction.
Filter by:The investigators conducted a validation study for the Montreal Cognitive Assessment (MoCA)-XpressO compared to the digital-MoCA test (version 8.1) as the gold standard. Participants were recruited from the MoCA clinic and a family practice. Ethics approval was received, and all participants provided informed consent. A crossover study design was applied to the MoCA-XpressO and the digital-MoCA test; participants were randomized for the order of administration. The investigators only recruited participants who did not complete a MoCA test during the 3 months prior to the study. A logistic regression model was built, and the accuracy of the model was evaluated by the sensitivity, specificity, and area under the Receiver Operating Characteristic (ROC) curve.
Cognitive Stimulation Therapy (CST) is an evidence-based non-pharmacological group therapy shown to benefit people with mild to moderate dementia. Despite increasing availability of CST worldwide, access remains limited in the United States. This pilot pragmatic trial will embed CST referral into the standard care protocol of health care settings that serve people living with dementia in the state of Connecticut, and evaluate online delivery of CST known as virtual CST (V-CST), and assess the acceptability of V-CST to people living with dementia. The study design is a two-armed randomized embedded pragmatic clinical trial (ePCT). The trial aims to determine if cognitive decline is experienced less commonly among V-CST participants than control group members based on three widely used measures of cognition, the Montreal Cognitive Assessment (MoCA), St. Louis University Memory Screen (SLUMS), and Mini Mental State Exam (MMSE). The study population will be persons with mild to moderate dementia identified by clinicians in standard care. From this population, subject participants will be randomized to intervention and control groups. Patients randomly assigned to the intervention group will be referred by their clinical providers to participate in V-CST, and those who accept the referral will participate in the intervention.
Dementia creates a great personal and societal burden and there are currently no treatments to stop memory loss. Many patients with dementia take medications to treat other conditions, e.g. high blood pressure and cholesterol. Some of these medications may have central effects on the pathophysiological processes leading to dementia. Medication repurposing is a cost and time-effective way to discover new treatments. Swedish registers are a unique tool to detect medication candidates for repurposing. The Swedish Dementia Registry (SveDem) has >100000 patients and ca. 144000 measures of cognition over time (measured with the Mini-Mental State Examination-MMSE), making it perfect to examine whether certain medications are associated with less cognitive decline in patients with dementia. Cholesterol and kidney function affect treatment and cognition and are available for 25000 patients. The investigators propose a study combining traditional cohort studies and newer artificial intelligence (machine learning) techniques to detect medications associated with slower cognitive decline in patients from SveDem. The investigators will test pre-specified hypotheses since the investigators suspect specific medications are better candidates to prevent cognitive decline, but the investigators will also let the machine learning algorithms explore the data to find associations that the investigators do not suspect in advance. Finally, the candidate medications will be tested in animal and cellular models to determine the mechanisms of their effects.
The purpose of this research study is to measure cerebrospinal fluid (CSF) clearance in subjects with and without high blood pressure. CSF cushions the brain from impact and carries waste products from the brain to the bloodstream. This process is known as clearance. Impaired removal of proteins from the aging brain causes their buildup and may contribute to an increased risk for Alzheimer's disease. It is also suspected that clearance may be related to the health of vessels carrying the blood throughout the brain. It is known that high blood pressure damages blood vessels and thus may impair clearance. In this project we will examine if having high blood pressure is related to impaired brain clearance and whether treating high blood pressure improves clearance and reduces buildup of Alzheimer's disease-related proteins. Participants will be asked to undergo a medical examination, testing of memory, brain imaging (both magnetic resonance and positron emission tomography, and spinal tap at the beginning of the study and 1 -2 years later.
Cognitive dysfunction is the impairment of mental process of perception, memory and information processing which allow the human to acquire knowledge and plan for the future . The etiology of Postoperative cognitive dysfunction (POCD) is unclear and seems to be multifactorial involving a combination of patient, surgical, anesthetic and environmental factors .It can be a manifestation of transient or permanent cerebral injury. While cognitive function tends to improve over months to years postoperatively in affected individuals, some proportion has seemingly permanent cognitive injury .
HELI is a multicenter, randomised controlled trial in two Dutch research centres (Donders Centre for Cognitive Neuroimaging, Nijmegen, and the department of Human Nutrition & Health at Wageningen University) among 104 older adults aged 60-75 years who are at risk for cognitive decline with an intervention duration of 26 weeks (roughly 6 months). Participants are randomized in a 1:1 ratio to a multidomain lifestyle intervention characterized by group-sessions and guidance (high-intensity intervention group) versus online access to general lifestyle-related health information in the form of biweekly leaflets (low-intensity intervention group).
Mild cognitive impairment associated with movement disorders occurs in up to one third of patients in early stages of the disease, and confers an increased risk of developing dementia. Non-pharmacological interventions to improve cognition have so far been based on computer-based cognitive stimulation and rehabilitation programs. These interventions base their mechanism of action on neuroplasticity and how improvements in cognitive function will generalize to functional improvement. Despite having shown certain indicators of efficacy in previous exploratory studies and clinical trials, cognitive rehabilitation continues to show insufficient evidence and requires further study. To date, there are no previous studies using immersive virtual reality (IVR) to improve cognition. Both IVR and cognitive stimulation are based on the premise that they allow the simulation of ecological environments for rehabilitation than conventional rehabilitation, as well as being more efficient by allowing control of extraneous variables and providing safe spaces for patients. The only PD rehabilitation studies that have been conducted using IVR aimed to improve gait and balance disturbances compared to conventional physiotherapy treatment or non-immersive virtual reality (NIVR). We hypothesize that a cognitive rehabilitation program using IVR or computer-mediated cognitive stimulation could have a greater beneficial effect on the cognitive status of patients with cognitive impairment associated with movement disorders compared to other modalities such as music therapy, delaying the worsening of cognitive functions.
This a study to improve diagnosis of dementia with Lewy bodies with RT-QuIC in different biospecimens.
Obesity and glucose intolerance or overt diabetes are increasing at an alarming rate in the population, and are bound to become a public health issue and a major cause of disability, loss of independence and high social costs in the near future. A large body of evidence has in recent years highlighted, among the negative effects of overnutrition and glucose dysmetabolism, also an acceleration of cognitive decline and of brain senescence, through cellular (vascular, neuronal, or both) and molecular mechanisms still incompletely clarified. Understanding how overweight and impaired glucose homeostasis negatively affect brain function represents both a major scientific challenge and an avenue to early detection and possibly prevention of this invalidating complication. The aim of this project is to obtain neuronal progenitor-like cells from skin fibroblasts in order to correlate patient-specific metabolism to adult neural stem cell (NSC) and neuronal function in vitro.
Cognitive frailty, characterized by the coexistence of physical frailty and cognitive impairment, is a robust indicator of cognitive decline. Recognizing its significance, the International Association of Gerontology and Geriatrics and the International Academy on Nutrition and Aging have advocated for the use of cognitive frailty assessment as a means of monitoring the progression of mild cognitive impairment towards debilitating conditions like dementia, Alzheimer's disease, and loss of independence. Despite the clear need, a practical and remotely accessible tool for measuring cognitive frailty is currently lacking, especially within the context of telehealth visits. With telehealth video-conferencing becoming increasingly popular, accepted by healthcare payers, and preferred by older adults who may face difficulties traveling to a clinic, there is a pressing need for a software-based solution for remote cognitive frailty assessment that can be easily integrated into existing telehealth systems. This study proposes designing and validating a video-based solution to remotely monitor cognitive-frailty in older adults.