View clinical trials related to Cognitive Dysfunction.
Filter by: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.
This is a phase I, dose-escalation and phase II dose-expansion clinical trial determining the maximum tolerated dose (MTD) and safety and tolerability of adding N-Acetyl-Cysteine (NAC) to ovarian cancer patients who are receiving a platinum-based therapy (PBT). This study will investigate whether NAC will mitigate chemotherapy-related cognitive impairment (CRCI).
Postoperative cognitive dysfunction is a relatively common in elderly patients after hip surgery, but exact mechanism of its onset is still unclear as well as contributing factors. There is also increased incidence of depression and anxiety. Both affect the recovery after surgery, slow it down and reduce the quality of life. Patients will be divided into two groups, operated under regional anaesthesia and operated under general anaesthesia, and monitored after surgery. Patients will be tested before and after surgery to evaluate postoperative cognitive deficits, depression and anxiety scale and health-related quality of life questionnaire.
This research program aims to comprehensively investigate the clinical, physiological, metabolic, and molecular effects of reducing sedentary behavior in patients with mild cognitive impairment. A 4-month parallel-group randomized controlled trial will be conducted aiming to investigate the feasibility and efficacy of a newly developed personalized intervention focused on replacing sedentary time with light-(or very light-) intensity physical activity in patients with mild cognitive impairment. Additionally, a sub-sample of patients will complete a randomised cross-over study aiming to unravel potential mechanisms underlying the metabolic, physiological and molecular effects of breaking up sedentary time with light-intensity physical activity versus carrying out the minimum amount of daily exercise at once and then remaining sedentary versus simply remaining sedentary throughout all sessions, in a well-controlled laboratorial condition.
Postoperative cognitive dysfunction (POCD) is a common postoperative complication in patients aged 65 and over, which refers to cognitive function changes such as memory decline and attention deficit after anesthesia and surgery. In severe cases, personality changes and social behavior decline may also occur, resulting in irreversible cognitive impairment.Previous studies have suggested that cognitive dysfunction after general anesthesia is linked to a genetic disorder of the body clock.Exosomes are cellular forms of cellular microvesicles containing complex RNA and proteins.Exosomes can mediate the expression of genes in the late transcriptional period of the clock system, and directly or indirectly participate in the negative regulation of rhythm expression of minute control genes, playing an important role in the intercellular circadian rhythm information output pathway.Rhythm disorders in the core biological clock system of urinary exosomes and the clock control genes related to kidney can early indicate circadian rhythm changes in the core biological clock system.The sorting and detection of urinary exosome clock information materials in patients has the advantages of easy access, continuous monitoring, early diagnosis and less damage, making urinary exosome a biomarker for the diagnosis and monitoring of circadian rhythm of a good kidney biological clock system.
Patients with Chronic Kidney Disease (CKD) have impaired psycho-cognitive functions in parallel with deteriorating kidney function. The pathophysiology of cognitive impairment in CKD is poorly understood and there is currently no therapy to limit cognitive decline. As kidney function deteriorates, uremic toxins accumulate in the patient's body. Their cerebral toxicity, whether direct or indirect through cerebral endothelial dysfunction, is a hypothesis that may explain the cognitive abnormalities, as well as the increased severity of strokes in patients with CKD. Among uremic toxins, indoxyl sulfate (IS) is an indolic toxin that is poorly purified by dialysis and whose high levels have already been shown to be associated with an increased cardiovascular risk in patients with CKD. Our hypothesis is that the psycho-cognitive disorders observed in patients with CKD are linked to cerebral endothelial dysfunction associated with high levels of IS. In two models of CKD in rats, found impaired cognitive performance and increased blood-brain barrier (BBB) permeability, as assessed by brain scintigraphy with 99mTc-DTPA, compared to healthy control rats. Impaired cognitive performance was correlated with BBB permeability and circulating IS levels. Rats receiving an IS-enriched diet had higher BBB permeability and more impaired cognitive performance than MRC rats without an IS-enriched diet, suggesting a central role of IS. The 99mTc-DTPA brain scintigraphy has already been used in clinical research to assess the BBB disruption after stroke, outside the context of CKD, and the tracer is available in human nuclear medicine. Our hypothesis is that patients with CKD would have increased permeability of the BBB compared to healthy age- and sex-matched controls, and that this permeability would correlate with circulating levels of IS as in our preclinical animal models. The main objective of this project is to evaluate the permeability of the BBB by brain scintigraphy with 99mTc-DTPA in patients with end-stage CKD and compare it to healthy age- and sex-matched controls. A 18-month inclusion period will allow us to recruit 15 patients with end-stage CKD and 15 healthy volunteers matched in age and gender, as an important number of patients with end-stage CKD are followed in our department. If we confirm the results obtained in animal models, we will be able to propose the analysis of BBB disruption in isotope imaging as a criterion for evaluating therapeutic approaches modulating the toxicity of indolic uremic toxins in order to limit cognitive decline.
Alzheimer's disease (AD) is a prevalent, long-term progressive degenerative disorder with great social impact. It is currently thought that, in addition to neurodegeneration, vascular changes also play a role in the pathophysiology of the disease. Meantime, EEG resting state has also demonstrated significant change in patients with AD in neuroscience research area. Thus, the combination of these sensitive biomarkers would lead to a potential new biomarker for detection of AD, which has higher specificity and sensitivity.
There is association between eye movement disorder and cognitive dysfunction. Therefore, utilizing eye movement and screening for cognitive dysfunction is feasible. In the present study, we will develop an artificial intelligence platform to screening for cognitive dysfunction by inspecting the function of eye movement. Futher more, based on the screening results, the platform will offer referral suggestions.
Alzheimer's Disease is a neurodegenerative disease age related caused by neurofibrillary tangles misfolding and Beta-amyloid protein accumulation. In the last decade several findings showed the role of biophenols present in diary intake such as extra virgin olive oil as potential antagonist of neurodegeneration. Two population studies (The Seven Countries Study and Three-City-Study) and four clinical trials (PREDIMED, PREDIMED - NAVARRA, ACTRIN and ISRCTN) have already suggested that mediterranean diet or other diets supplemented with extra virgin olive oil could improve cerebral performance.
Studies have shown that the lifetime risk of developing symptomatic knee osteoarthritis is 40% in men and 47% in women; and the risk can be increased to 60% when the patient's BMI reaches 30 kg/m2. In this population, knee replacement is the most common, effective, and cost-effective method in all treatments with reducing pain, improving joint function and quality of life. Postoperative cognitive dysfunction (POCD) is a common complication in the elderly, and its incidence can reach 25-40% in major non-cardiac surgery. As for POCD can prolong hospital stay, increase mortality and morbidity, and increase social and economic burden, it is especially important for the prevention and treatment of POCD. However, The mechanism of POCD is still unclear. Studies suggest that it may involve inflammation and oxidative stress in the central nervous system. But for the elderly, they are in a state of low inflammatory response. At the same time, surgery and tourniquets also can trigger or aggravate inflammatory response. Once the inflammatory factors released into the blood circulation, they can act on the central nervous system in a variety of ways. As a result,elderly patients are more likely to develop POCD. In addition, some studies have shown that pain can also increase cognitive burden. Aspirin, its pharmacodynamic effects includes anti-inflammatory and analgesic effects which may have a certain effect on the prevention of POCD.