View clinical trials related to Alzheimer Disease, Late Onset.
Filter by:Severe alterations of brain networks connectivity have been described in Alzheimer's disease (AD). Repetitive Transcranial Magnetic Stimulation (rTMS) has gained evidence as an effective tool to modulate brain networks connectivity, leading to a recovery or reorganization of both local and remote brain regions functionally connected to the stimulated area. The investogators propose an innovative tailored network-based rTMS treatment to ameliorate cognitive symptoms in mild AD, through the boosting of connectivity within brain networks affected by AD pathophysiology. The combination of the proposed intervention with an integrated multi-modal imaging approach will allow to evaluate the neural mechanisms underlying the clinical response to the treatment and to define quantitative markers of clinical impact on AD. If successful, the present proposal would immediately impact on patient's quality of life, with important implications for the time and costs of delivery of rehabilitative services.
This study seeks to correlate microbiome sequencing data with information provided by patients and their medical records regarding Alzheimer's disease.
This is an extension of EM 1000-1 wherein subjects who participated in the original study have been given the opportunity to participate in a 4-month extension of TEMT. Seven of the eight subjects in the original EM 1000-1 agreed to participate in this study extension. The time between completion of the initial study's 2-month treatment period and the beginning of this extension study's 4-month treatment period will range from 4 months to 13 months (due to staggered start of treatment in the initial study). This extension study's primary objective is to determine the effects of a follow-up treatment period of 4-months on performance of Alzheimer's Disease (AD) subjects in the same comprehensive array of cognitive tasks they performed in the initial 2-month treatment study. Baseline cognitive performance will be compared to performance at both 2-months into treatment and at the end of the 4-month treatment period. Secondary objectives include analysis of blood and CSF for AD markers and evaluation of safety throughout the treatment period.
The Etude Study is a multi-center, four-arm prospective dose-adjusting study designed to assess the tolerability, safety and efficacy of non-invasive sensory stimulation for patients with cognitive impairment.
The aim of this study is to establish and perfect the China Cognition and Aging Study (China COAST) cohort, to clarify the epidemiology, influencing factors, genetic characteristics, pathogenesis, disease characteristics and diagnosis and treatment status of dementia and its subtypes in China. It is of great significance to establish a relatively comprehensive national database of cognitive disorders, improve the clinical diagnosis and treatment level of cognitive disorders, and formulate prevention and treatment strategies for dementia. The primary aims of China COAST are as follows: 1. To use the prospective cohort to establish a large database research platform, so as to provide comprehensive epidemiological data, clinical and neuropsychological evaluation data, biological samples, and laboratory tests and imaging data. 2. To update the prevalence and incidence rate of dementia and its subtypes every 2-3 years, and clarify the conversion pattern from normal elderly to MCI and from MCI to dementia. 3. To explore the known or unknown protective and risk factors of dementia and its major subtypes (AD, VaD, other dementia). 4. To discover new pathogenic genes and susceptible genes of dementia and its major subtypes (AD and VaD), as well as new mutation sites of known pathogenic genes. To study the genetic variation, mutation and polymorphism of PSEN1, PSEN2, APP and APOE genes in dementia patients, and to understand their distribution and roles in the pathogenesis. 5. To study the biomarkers (body fluid, genetics, imaging) with diagnostic value of MCI, AD (sporadic and familial) and VaD, to define their cut-off values, and to establish prediction models. 6. To study the diagnostic criteria of cognitive normal, MCI, dementia and their subtypes (clinical and molecular subtypes) in the cohort, and to make psychological assessment scales with high sensitivity and specificity, and in line with the characteristics of Chinese people. 7. To find potentially modifiable risk factors for dementia and to study the prevention and intervention effect of non-pharmacological treatment on APOE ε4 carriers, MCI and AD or other dementia patients，which included improvements in education, nutrition, health care, and lifestyle changes. This needs a long time follow-up. 8. To explore the relationship between dementia as well as its major subtype AD and cerebral and systemetic circulatory disorders (for example, mixed dmentia), as well as potential therapeutic strategies. 9. To carry out investigation and researches about dementia related education, improve the awareness of dementia, and strengthen the management of dementia. 10. To investigate the level of stigma and discrimination and its influencing factors in patients with Alzheimer's disease and their caregivers.
The purpose of this study is to examine cross-sectional associations between CSF markers of synaptic injury (Ng and SNAP-25) and functional connectivity in default and semantic memory networks using 3T- fMRI in individuals with MCI (i.e. the earliest clinically detectable stage of cognitive impairment) due to AD or mild AD dementia (CDR 0.5-1; n=20) and cognitively normal controls (CDR 0; n=20).
This study attempts to identify two types of AD by using clinical and cognitive tasks and brain imaging. The subtypes of AD are separated into a "typical" group (memory loss) and a "variant" group (language, visuospatial, and other cognitive difficulties). Performance on the clinical tasks and brain imaging will be compared among the young-onset Alzheimer's disease group, a late-onset Alzheimer's disease group, and a control group.
To evaluate the effectiveness of an online educational course on Alzheimer's disease (AD) prevention, treatment and caregiving.
The purpose of this study is to determine the safety and initial efficacy of Transcranial Electromagnetic Treatment (TEMT) in patients with mild/moderate Alzheimer's Disease. Throughout a 2-month treatment period, patients will be evaluated for cognitive performance, brain energy utilization, functional brain imaging, and blood/cerebrospinal fluid (CSF) markers for Alzheimer's Disease. Since all patients will receive TEMT, each patient's baseline measurements will serve as their own control for any treatment effects.
Background and objectives: The aims of this naturalistic study were: to analyze factors which could be predictive of good response to cholinesterase inhibitors (ChEI), such as: age, sex, schooling, mild (CDR 1) or moderate Alzheimer's disease (AD),(CDR 2), Apoliprotein epsilon 4 (APOE Ɛ4), among others, in their cognitive and clinical response. We also classified patients according to their response to Mini mental State of Examination (MMSE). Finally we saw the polymorphisms of APO E and cytochrome P450 2D6 (CYP2D6) and tried to correlate the response with different allelic forms of Apo E and among others with wild type homozygotes (wt/wt) and their polymorphisms (CYP2D6*3,*4, *5, *6 and 10) of CYP 2D6. Patients and Methods: 129 patients were diagnosed as AD or AD+cerebrovascular disease (CVD) mild or moderate. After 12 month-treatment, 97 patients completed the study. They were assessed (four) times. In the first visit, without taking ChEI, after 3, 6 and 12 month-treatment, they were taking donepezil or rivastigmine or galantamine. We also extracted 5 mL of blood sample to genotype the DNA. In each visit, we applied cognitive, functional, mood and behavior scales. Good responders were defined as those who scored > 2 in MMSE. Results and Conclusion: In longitudinal analysis, patients with mild AD and good responders at 3 months were considered good responders at 12 months. We obtained a higher rate of good responders comparing with other researches (27.8%). There was no correlation between dose, APOE and CYP 2D6 polymorphisms, although we already obtained clinical results with the dose dosage of 5mg.