Active clinical trials for "Cognitive Dysfunction"

Preventing dementia is an important goal for our aging population. This proposal is an initial 42 months study of the effect of standardized ginkgo biloba extract (GBE) on preventing or delaying cognitive decline in people age 85 years or older (the oldest old). The study focuses on the oldest old who present a distinct advantage for primary prevention studies because of their particularly high risk for developing mild cognitive impairment (MCI), a precursor to dementia. Because this is a population that has previously been out of the mainstream for use of alternative medicine, the safety of GBE in this age group will also be tested in this study. The study is randomized, placebo controlled and double blind. Approximately 200 elderly cognitively healthy subjects will be enrolled and followed for detection of conversion to MCI. This pilot study is viewed as a necessary first step in order to demonstrate that GBE, an alternative or complementary therapy, has a disease modifying effect on the brain, distinct from a symptomatic effect. The study will test the feasibility of the randomized start design, a trial design proposed as a method for discerning brain- or disease- modifying from symptomatic effects. The magnitude of biological effect of the treatments will also be assessed with volumetric quantitative MRI, a complementary means of confirming whether there is a brain modifying effect (measured as a decrease in brain volume loss with treatment). Peripheral markers of oxidation status will measure possible anti-oxidant effects of GBE.

This study is a prospective observational study, which involves a cohort of 2000 all-sex and all-ethnic people aged 60 years and above with permanent residence in Tianma area, SheMountain Town, Songjiang District (suburban area), Shanghai. Demographic information, neuropsychiatric scale, peripheral blood, APOE genotype, brain MRI, speech information, AV45-PET, FDG-PET, Tau-PET, GLP-1R PET, and cholinergic receptor probe (ASEM) PET were collected and analyzed. Follow-up visits were performed twice a year for 4 visits, and neuropsychiatric scales and biological samples were collected at each follow-up visit to construct a diagnostic model for patients with mild cognitive impairment, or Alzheimer's disease, as well as a predictive model for the progression of cognitive impairment.

This study is designed to assess the imaging characteristics of Flortaucipir (18F-AV-1451) in subjects who participated in the Biomarkers of Cognitive Decline Among Normal Individuals (BIOCARD) study at Johns Hopkins University.

The aim of our study is to reveal whether static and dynamic balance tests can be an indicator of deterioration in cognitive impairments in geriatric individuals.

This project's main goal is to use state-of-the-art passive sensing techniques to identify digital biomarkers that relate to bioenergetic changes in the brain due to nicotinamide riboside supplementation in those with mild cognitive impairment and mild Alzheimer's dementia.

The purpose of this study is to explore the long-term consequences of neuroimaging and perceived cognitive dysfunction in obstetrics posterior reversible encephalopathy syndrome.

Advanced stages of the response to life-threatening infection, severe trauma, or other physiological insults often lead to exhaustion of the homeostatic mechanisms that sustain normal blood pressure and oxygenation. These syndromic presentations often meet the diagnostic criteria of sepsis and/or the acute respiratory distress syndrome (ARDS), the two most common syndromes encountered in the intensive care unit (ICU). Although critical illness syndromes, such as sepsis and ARDS, have separate clinical definitions, they often overlap clinically and share several common injury mechanisms. Moreover, there are no specific therapies for critically ill patients, and as a consequence, approximately 1 in 4 patients admitted to the ICU will not survive. The purpose of this observational study is to identify early patient biologic factors that are present at the time of ICU admission that will help diagnose critical illness syndromes earlier, identify who could benefit most from specific therapies, and enable the discovery of new treatments for syndromes such as sepsis and ARDS.

Mild cognitive impairment (MCI) represents a transitional stage between healthy aging and dementia, and affects more than 15% of the population over the age of 60 in China. About 15% patients with MCI could progress into dementia after two years and about one-third develop into dementia within five years, which will lead to suffering, as well as staggering economic and care burden. So, exploring the predicting biomarkers from MCI to dementia to identify and delay progression to dementia at an early stage is of great social and clinical significance. Some reports based on a single neural biomarker suggest that risk models can predict the conversion of MCI to dementia, but no widely recognized prediction models basing on multiple complex markers have been used in clinical practice. The objectives of this study are to outline the spectrum of MCI transforming into dementia through a 5-year prospective longitudinal cohort study; Secondly, screening biomarkers for MCI transmit to dementia are based on clinical symptoms, neuropsychology, neuroimaging, neuroelectrophysiology, and humoral markers tests data.

The objective of this single-center retrospective observational study is to describe cognitive and psychological outcomes and their impact on quality of life after at least 3 months of intensive care unit (ICU) discharge in severe COVID-19 survivors.

Patients with gliomas often suffer from lower quality of life, and detrimental social interactions after diagnosis. Two cognitive processes are crucial for maintaining healthy social relationships and interacting with others: social cognition and language. Social cognition is the ability to recognize and process mental and emotional states and to react appropriately in social situations. Social cognition and language are separate cognitive functions that can be affected in different ways in patients with brain injury. Also, distinct cognitive measurement instruments are used to assess both processes. However, there appears to be a certain overlap between social cognition and language. Reacting adequately in social situations requires both verbal and non-verbal communication and to communicate feelings, thoughts and intentions, people often use language. That is, verbal communication is part of a symbolic system that makes social interaction possible. Therefore, language abilities seem to be important to social cognition. Research shows that language is frequently impaired in adult patients with gliomas. Importantly, recent evidence suggests that social cognition can also be impaired in this patient group. However, no studies have been conducted into the relationship between social cognition and language in patients with gliomas. Increasing knowledge on the overlap between both functions, more specifically the influence of language difficulties on social cognition, will improve diagnostic accuracy. Eventually, this will lead to better, tailor-made treatments for these problems that negatively affect daily functioning. Objective: The main research objective is to examine the influence of language impairments on different social cognition processes, i.e., emotion recognition, Theory of Mind (ToM) and affective empathy, in patients with (suspected) gliomas. Secondary objectives are 1) to determine if patients with gliomas show impairments in different aspects of social cognition, i.e. emotion recognition, ToM, empathy and self-awareness; 2) to assess specific language impairments by looking at item-level characteristics of language tasks (e.g., analyses of word properties of fluency tasks, errors during object naming or spontaneous speech), and 3) to determine which tumor characteristics (low- or high-grade, genetic mutation, tumor location) are associated with different aspects of language and social cognition.