View clinical trials related to Cognitive Dysfunction.
Filter by:This study is the academic study and continuation and further development of a prior project under the leadership of Professor LeBlanc. Patients undergoing allogenic stem cell transplantation are followed up in the outpatient clinic. Here, patients are offered participation the fatigue study measuring both fatigue and cognitive impairment systematically by international standard. Previous study by Boberg et al suggested distinct mRNA and proteomic profiles segregating fatigued from non-fatigued patients as well as patients with or without cognitive impairment. A larger well-defined patient cohort is necessary to confirm these results. Investigators aim to identify specific sets of proteins in the CSF that can serve as potential biomarkers of cognitive dysfunction and/or fatigue. This will be performed with two methods: - by using mass spectrometry-based proteomics approaches - Olink technology PET examinations will be performed on both fatigued and non-fatigued. We will utilize the second generation TSPO radioligand [ 11C]PBR28 as well as the SV2A radioligand [ 11C]UCB-J, both showing high signal-to-noise ratio and adequate test-retest properties.
The purpose of this research study is to investigate the relationship between light and circadian rhythms. Twenty healthy older adults will be recruited to participate in a randomized, cross-over study, where an active lighting intervention designed to maintain entrainment and a control intervention designed not to entrain will be tested.
The goal of this clinical trial is to compare the permeability of blood-brain barrier between the intravenous anesthesia group and the inhalation gas anesthesia group in the elderly patients undergoing surgery. The main questions it aims to answer are: - [Is the permeability of blood-brain barrier between the intravenous anesthesia group and the inhalation gas anesthesia group in the elderly patients different?] - [Is the incidence of postoperative cognitive dysfunction between the intravenous anesthesia group and the inhalation gas anesthesia group different?] Participants will be anesthetized with different categories of anesthetics. - Intravenous anesthetics - Inhalation gas anesthetics
The benefits of multicomponent physical exercise (MPE) in the mental and physical health of older adults are widely accepted. However, during Covid19 pandemic, some face-to-face programs for physical exercise were canceled. The situation was particularly complex in nursing homes (NHs) because residents were often confined to their floors and many leisure activities were canceled. Online physical exercise sessions increased their popularity during the pandemic. However, there is no evidence that online physical exercise sessions are an effective alternative to face-to-face sessions for older people living in NHs. The current project aims to assess a synchronous online MPE program's feasibility, acceptability, and effects. With this aim, first a synchronous online MPE intervention was designed and then a multicenter randomized controlled trial with 3 branches was developed: face-to-face MPE, online MPE and control. Participants in the control group will receive advice to maintain physical activity and reduce sedentary behavior. Additionally, those in the intervention groups will also participate in 24-week individualized and progressive MPE programs performed at moderate intensity that will be focused on strength, balance, and endurance. MPE will be performed through supervised sessions (2 per week). One of the intervention groups will be supervised face-to-face whereas the other will be supervised synchronously online. Study assessments will be conducted at baseline, at the end of the 24-week intervention, and after 24-week follow-up. The primary outcomes of the study will be changes in mental and physical health. Secondary outcomes will include other parameters of mental and physical health, together with physical activity, frailty, quality of life, and biological markers. The dropout rate, the adherence, the injuries and other adverse events suffered by the participants, and technical incidences produced in the online modality will be recorded. A mixed-model ANCOVA will be performed to compare the data between intervention and control groups, considering as co-variables baseline measurements. The statistical analysis will be performed on the whole sample and separated for sex/gender. The study received ethical approval (M10_2022_405_IRAZUSTA ASTIAZARAN). The results of this project will be transferred to institutions and entities involved in managing NHs to increase the opportunities for the residents to remain physically active.
The goal of this type of study: clinical trial is to assess K-OCS clinical utility in participant population. The main aims: validate the reliability and validity of the Korean version of the Oxford Cognitive Screen (K-OCS) analyze its sensitivity, specificity, and diagnostic accuracy, and compare its examination participation rates with existing assessment tools to determine the effectiveness of K-OCS in detecting post-stroke cognitive impairment.
Pentoxifylline can improve cognitive impairment after ischemic stroke, possibly by improving the level of cerebral blood flow, affecting the content of blood oxygen and metabolic substances in the brain, and then playing a protective role in the transmission of nerve electrical signals, and ultimately improving cognitive function. The patients with cognitive impairment and non-dementia PSCIND after ischemic stroke were randomly divided into two groups. In addition to the basic drugs of ischemic stroke, the patients were given pentothemine sustained release tablets and blank control respectively to observe the effects of pentothemine on cognitive function and neuronal electrical signals in the patients with ischemic PSCIND. It is expected to explore the possible internal biological mechanism by using transcranial Doppler, oxygen-dependent functional magnetic resonance imaging and craniocerebral magnetic resonance pop analysis. Finally, statistical correlation analysis was used to elucidate the specific mechanism of pentoxifylline in improving cognitive function of non-dementia patients with cognitive impairment after ischemic stroke.
1. Explore the expression level of immune checkpoint VISTA in peripheral blood and cerebrospinal fluid of patients with cardiovascular risk factors; 2. Discuss the correlation between different risk factors (mainly hypertension, diabetes, smoking, hyperlipidemia, hyperhomocysteinemia, etc.) and the expression level of immune checkpoint VISTA in peripheral blood and cerebrospinal fluid of patients with cerebrovascular diseases and immune-inflammatory related diseases of the nervous system; 3. Explore the correlation between different immune inflammatory factors (IL1, IL6, IL10, INFγ, TNFα) and the expression level of immune checkpoint VISTA in peripheral blood and cerebrospinal fluid of patients; 4. Track and explore the dynamic changes of immune checkpoint VISTA in peripheral blood and cerebrospinal fluid of patients with cardiovascular risk factors in 3 months, 1 year, 3 years, and 5 years.
Postoperative cognitive deficit and its connection with surgery and general anesthesia were first mentioned in the literature in 1955 by Bradford. Cognitive disorders in the postoperative period are postoperative delirium (POD) and postoperative cognitive dysfunction (POCD). POD is an acute dysfunction in cognition, which did not exist preoperatively. Attention deficit disorder is the main symptom of POD and refers to the inability to direct, focus, maintain, or shift attention. Memory impairment, disorientation, or perceptual disturbances may also be present. Cognitive capacity changes in POD patients develop and fluctuate in the first few days after surgery. Unlike POD, there is no formal definition for POCD. Based on data from the existing literature, it is defined as newly diagnosed cognitive deterioration that occurs after surgery. The diagnosis of POCD should be based on pre- and postoperative screening with appropriate psychometric tests. Risk factors for the development of POCD include those related to the surgical procedure, anesthesia, or the patient himself. Compared to less invasive and shorter operations, there is a higher risk of developing POCD after major, invasive, and long-term operations. Additional risk factors are intraoperative (intraoperative bleeding, perioperative transfusion treatment, hypotension) and postoperative complications (respiratory insufficiency, pneumonia, atelectasis, bronchospasm, bronchopleural fistula, and pulmonary edema). Presurgical optimization (Prehabilitation) is a widespread concept that aims to improve the general condition of the patient or optimize comorbidities before major surgery. Prehabilitation is primarily focused on improving physical ability and nutritional status, but it is developing in the direction of a multimodal approach that includes measures to reduce stress and anxiety. Psychological factors are increasingly recognized as an essential element of prehabilitation and are often added to prehabilitation programs. Older patients, who meet the diagnostic criteria for frailty and are at risk of developing postoperative complications such as cognitive function disorders are increasingly undergoing lung resection. These complications can affect the outcome and speed of postoperative recovery.
Posttraumatic consequences are common causes of disability and long-term morbidity. They include cognitive dysfunction, seizures, headache, dizziness, fatigue, sensory deficits, neurodegeneration and psychiatric disorders (e.g. posttraumatic stress disorder, depression, anxiety, etc). Diffuse axonal injury and disruption of normal neuronal function are the most common and important pathologic features of traumatic primary closed head injury. depression, anxiety, etc). Excitotoxicity and apoptosis caused by activation of N-methyl-D-aspartate (NMDA) glutamate receptors, are two main suggested mechanisms of traumatic neuronal cell death and posttraumtic neurologic adverse consequences. Experimental and clinical studies have demonstrated that memantine hydrochloride, NMDA-type glutamate receptor antagonist, could have beneficial effect in treatment of posttraumatic cognitive dysfunction. Memantine may contribute to cognitive improvements in TBI by decreasing the synaptic 'noise' resulting from excessive NMDA receptor activation, inhibition of β-amyloid mediated toxicity and readjustment of the balance between inhibition and excitation on neuronal networks in the central nervous system (CNS).
The purpose of this study is to explore the mechanism of cognitive impairment in patients with symptomatic intracranial atherosclerotic stenosis (ICAS), and further plans to explore the impact of different treatment options on cognitive function in symptomatic ICAS patients.