Active clinical trials for "Cognitive Dysfunction"

Background: Many studies suggest physical activity reduces risk of dementia and improves global cognitive function in individuals with mild cognitive impairment (MCI). Using commercial wearable technology to measure daily steps is feasible in this population. Objectives: The purpose of this pilot study was to explore whether 12 weeks of increased physical activity improved cognitive function in individuals with MCI. A wearable activity tracker was used to measure participants' daily steps as a quantifiable measure of daily activity level. Design: This was a one-group pretest-posttest study. Setting: Established memory clinic patients within a neurology department in Northern California during 2019. Participants: 17 enrolled and 14 included for data analysis. There were 7 females and 7 males whose mean age was 76.21 (SD 2.69). 12 participants were White, which reflected the clinic population. Intervention: Participants were asked to wear an activity tracker for approximately 12 hours a day for 12 weeks and to increase their physical activity as much as possible. They were provided twice a month telephone support. Measurements: The Montreal Cognitive Assessment (MoCA) was used to measure pretest-posttest cognitive function. Timed Up and Go (TUG) was used to assess fall risk at enrollment. Cumulative step count for the study period was measured with an activity tracker.

This study aims to provide clinical validation of EyeQuant, a fully automated retinal image analysis system for computation of vascular biomarkers indicative of cognitive disorders, using retinal fundus photographs collected from patients with mild cognitive impairment, Alzheimer's disease, and vascular dementia.

Stroke can lead to signficiant neurological deficits, and about one-third of stroke patients will be diagnosed of vascular mild cognitive impairment or post-stroke dementia. Post-stroke dementia includes all types of dementia that happen after stroke, irrespective of their cause, and vascular dementia (VaD), degenerative dementia (especially Alzheimer's disease), or mixed dementia (dementia as a result of the coexistence of vascular lesions of the brain and neurodegenerative lesions) are the most common causes of post-stroke dementia. However, it is difficult to determine to what extent cognitive impairment may be attributable to stroke versus concomitant Alzheimer disease. With the advent of PET imaging technique, we are able to conduct a multi-modal neuroimaging study to explore the composite influence of vascular injury, amyloid plaque and Tau protein the the cognitive performance after stroke.

Gait and posture disorders are very common in subjects aged 65 and over, and result mainly from neuromuscular and cognitive disorders. Many studies have shown that 1) vitamin D deficiency is very common in women aged 65 and over, 2) individuals with hypovitaminosis D have lower muscle, gait and executive performances and are more prone to fail than individuals with no hypovitaminosis D, 3) the intake of vitamin D combined or not with calcium may improve muscle strength and cognitive performance. The investigators hypothesized that the daily intake of 2 yogurts containing 200 IU of vitamin D and 400 mg of calcium 1) can improve spatiotemporal gait parameters, posture and executive performance, 2) and that this improvement depends of the initial level of vitamin D deficiency.

The main purpose of this study is to assess the induction of neuroinflammation in brain regions of interest for learning and memory in adult patients undergoing urological surgery under general anesthesia

This study is being done to find out whether regulation of brain blood flow is altered in patents with mild cognitive impairment (those who have memory problems but otherwise healthy) when compared with healthy elderly individuals. In addition, this study will determine whether exercise training improves brain blood flow, brain structure, and brain function in patients with mild cognitive impairment (MCI). This is a research study because at present the investigators know little about brain blood flow regulation in patients with mild cognitive impairment. The investigators also know little about whether exercise training improves brain blood flow, brain structure, and brain function in patients with mild cognitive impairment.

The purpose of this study is to investigate novel treatments to delay progression to dementia in patients with mild cognitive impairment (MCI) and metabolic syndrome (MS). The hypothesis is that treatment with pioglitazone or endurance exercise training will improve, stabilize, or attenuate decline in cognitive function compared to controls. This study will also discover potential mechanisms for the improvements and determine the baseline prevalence of amnestic versus non-amnestic MCI.

Rationale: improving the early detection of AD at prodromal pre-dementia stages has become a major matter of concern. There is now an important body of literature stating that early isolated cognitive deficits (Mild Cognitive Impairment-MCI-) predict the risk of developing AD. Several biomarkers are now available : specific and sensitive neuropsychological assessments, morphometric evaluation of hippocampal volume and white matter changes by MRI, cerebrospinal fluid or plasma dosage of Ab fragments and tau proteins, assessment of brain glucose hypometabolism in temporo-parietal regions with PET [F18]FDG. However, PET imaging using labelled compounds specifically binding to APs has been suggested to improve the diagnostic reliability and to potentially help in shortening the delay until formal clinical diagnosis of AD. F18 AV45 is a new radiotracer which kinetics characteristics allows 10 to 15 minutes acquisition 50 to 60 minutes post injection. Objectives: The primary objective of the study is to compare F18 AV45 cortical uptake in AD, MCI patients and Healthy Controls. Secondary objectives will be to compare cortical uptake of F18 AV45 in MCI subject who will have convert toward dementia versus those who will not, at two year follow-up period, to compare level of 18F-AV45 cortical uptake with neuropsychological testing, PET FDG hypometabolism, ApoE genotype. Method: Prospective multicentric study. 65 patients expected to enter the study. Primary outcome measure: Standard Uptake Volume ratios.

Mild Cognitive Impairment, Alzheimer's Disease and Parkinson's Disease all represent a range of degenerative conditions that have cognitive impairments which all limit the ability for older individuals to self-manage care, participate in daily activities and community participation. The consequences of these progressive diseases increase the requirement for residential care, associated medical costs and may negatively impact the overall quality of life and mental health for individuals. According to the Alzheimer Society of Canada, over the next few decades, more than 1 million Canadian's will be living with decreased cognitive ability and will require an increased amount of support, whether through family or institutional sources. Currently, there are few cognitive programs for individuals diagnosed with mild cognitive impairment or for individuals wishing to maintain their current level of cognitive ability which translates to meaningful improvements in daily living and independence, as well as generalized intelligence. To date, the Watson Centre Society for Brain Health (WCSBH) has successfully improved cognitive capacity, executive function and quality of life for over 100 individuals following a wide range of brain injury, and currently has a 77% return to work rate following completion of the full program. The program includes a combination of physical exercise, cognitive training and mindfulness meditation. The purpose of the research study is to explore the impact of an interdisciplinary cognitive rehabilitation program has upon the cognitive functioning and quality of life for individuals who are assessed to have mild cognitive impairment (MCI). In particular, the aims of this study include: 1) To evaluate changes in cognition and quality life in older adults with MCI. 2) To explore the potential for intensive cognitive intervention in slowing cognitive degeneration in older adults with MCI.

Taiwan is already an aging society due to the rapid increase of the aging population. To cope with this situation, it is necessary to make preparations for the care of the elderly. World Health Organization (WHO) proposed aging health strategy in recent years, and the community participation is the most important for the elderly. The courses provided by the community empowering are important to promote the healthy life of the elderly. However, at this stage, there are relatively few courses related to cognitive functions, life-style activities and aging education. It is needed to add more courses related to multi-domain.