View clinical trials related to Alzheimer Disease.
Filter by:The investigator will perform clinical studies to test a hypothesis that participants who have Alzheimer's disease will have different gut/oral microbiota profile as compared to the participants who do not have Alzheimer's disease. The investigators will also check the microbiome of their partners in this study. The investigators plan to perform the studies in 150 participants in Shanghai Tenth's People's Hospital and also in the houses in Shanghai city. Investigators will also measure the beta-amyloid in the feces of the participants. Finally, the investigators will determine cognitive function in these participants.
African-Americans (AAs) have an increased prevalence of both Alzheimer's disease (AD) and vascular risk factors for AD such as diabetes and hypertension when compared to whites. However, in a recent community based study of non-demented elderly, black race was associated with higher amyloid burden after adjusting for vascular risk factors, suggesting the presence of additional physiological differences on AD-risk by race in the early stages of the disease. The purpose of this study is to test whether poor slow wave sleep (SWS) quantity (SWS duration) and quality (slow wave activity, SWA) is one of these physiological factors. To test these hypotheses, the investigators will perform community outreach in churches and community-based organizations in Brooklyn and other NYC boroughs with which we have created substantial ties in recent years. In consultation with community stakeholders, the investigators will recruit 150 cognitively normal AA elderly (age 60-75) and 60 age, sex, BMI, income and education matched non-Hispanic whites from the same geographical areas. Investigators will first perform a medical and cognitive evaluation (Visit 1). Participants will then undergo 2 nights of home sleep monitoring using an unattended device to exclude OSA, followed by 7 days of actigraphy with a sleep log to record sleep duration. Both devices will be returned by mail. Subjects with reported total sleep time (TST) between 5 and 10 hours and absence of moderate to severe OSA will be invited to perform a 2-night nocturnal polysomnography (NPSG) (Nights 1-2) and a PiB-PET MR scan (Visit 2).
The clinical evaluation of a patient with a cognitive complaint requires neuropsychological tests, evaluating the integrity of memory and other cognitive functions. The initial evaluation is made most often by a doctor (general practitioner). In case of need for further examination, a neuropsychological report is made in consultation memory by a neuropsychologist, with further cognitive tests. The Cognitive Neurology Center at Lariboisière Hospital - Fernand Widal has developed a tool on a digital tablet or smartphone to evaluate cognitive functions: MemScreen. The purpose of this study is to validate this new neuropsychological test on tablet compared to the neuropsychological reference tests.
The objective of this proposed study is to evaluate the effect and safety of acupuncture combined therapy on cognitive function, daily living ability and quality of life of Alzheimer's disease by using the international dementia certification scale. In this 12-week, assessor-blind, a Multi-center randomized, controlled study of acupuncture as additional treatment with Donepezil, a total of 180 patients with Alzheimer's disease will be recruited. The patients will be randomly assigned to acupuncture combined with Donepezil (n =90) or Donepezil treatment (n =90). (36 sessions, 3 sessions a week). Changes in the cognition over time measured using ADAS-cog is the primary outcome. MMSE, ADCS-ADL and QOL-AD are the secondary outcomes. The study will be conducted at LongHua Hospital Shanghai University of Traditional Chinese Medicine, Huashan Hospital Fudan University, and Mental Health Center Shanghai Jiao Tong University School of Medicine.
The primary objective of this study is to measure the concentration and the regional brain distribution of pathologic tau deposition using the PET tracer AV-1451 in participants in the UAB-ADC cohort. The amount and distribution of AV-1451 in the brain will be correlated to demographic, clinical, genetic, and biospecimen data acquired through the separate ongoing UAB-ADC study. Assessment of interactions between race and vascular risk factors, brain tau levels measured with AV-1451-PET, and cognitive status will be the primary outcome of this imaging study. Individuals participating in this AV-1451-PET/MRI study will also be enrolled in an ongoing [C-11]PiB-PET/MRI study (IRB-300001005, IND-138128), and their amyloid, tau and cognitive statuses will be compared in terms of race and vascular risk factors.
Nearly 2 out of 3 patients with Alzheimer's disease (AD) experience problems with balance and mobility, which places such patients at increased risk of falling. The vestibular (inner ear balance) system plays an important role in balance stability, and vestibular therapy (VT) is well-known to improve balance function in healthy older adults. In this study, the investigators will conduct a first-in-kind randomized clinical trial to evaluate whether vestibular therapy improves reduces falls in patients with AD, in whom this treatment has never been studied.
The present study aims to evaluate the effect of cognitive stimulation (CS) in participants with a diagnosis of moderate and mild Alzheimer's disease (AD) and mild cognitive impairment (MCI) compared to control subjects not receiving any non-pharmacological interventions. Treated participants will receive a structured CS consisting of a wide range of activities aimed at the general improvement of social functioning and the maintenance of cognitive functions. The study consists of a 24-week treatment phase and a follow-up period of 24 weeks. During the treatment period, patients will receive two CS sessions a week. At baseline, all the participants undergo an extensive neuropsychological evaluation and a neurophysiological assessment aimed at studying the frequency of spontaneous blinking (blink rate) and cortical excitability and synaptic plasticity by means of the transcranial magnetic stimulation (TMS). Neuropsychological and neurophysiological evaluations will be repeated at the end of the treatment (week 24) and at the end of the follow-up period (week 48) in order to evaluate short- and long-term effects of CS. The hypothesis of this research is that CS may improve cognition and the neurophysiological parameters studied in treated participants compared to those untreated.
This study's main hypothesis is that a delivering a tailored lighting intervention (TLI) will provide a successful means for promoting circadian entrainment and treating metabolic disease and inflammation in patients with mild cognitive impairment (MCI) and Alzheimer's disease (AD) and Alzheimer's disease and related dementias (ADRD). As such, the proposed studies have the potential to provide important insights into the link between AD/ADRD and type 2 diabetes (T2DM) by identifying the disruption of circadian rhythms as a key component in the metabolic impairment. Preliminary data from ongoing studies demonstrates a beneficial effect of light treatment on sleep and depression. If positive results are observed, the potential also exists to transform the manner in which homes, assisted living facilities, and nursing homes are lighted by delivering a simple, practical, non-pharmacological intervention to promote entrainment, improve sleep, and reduce metabolic disease in AD and mild AD MCI patients. This randomized, placebo-controlled, crossover study involving 60 AD/ADRD patients who live in controlled environments (i.e., assisted living facilities and nursing homes), will investigate whether 8 weeks of exposure to a TLI designed to increase circadian entrainment improves sleep, mood, inflammatory markers, and metabolic control, compared to a control, circadian-inactive light.
The primary goals of this study are to use optical coherence tomography (OCT) angiography (blood vessel mapping) to: 1. Detect retinal blood vessel and blood flow changes in participants with dementia. 2. Detect amyloid protein deposits in the retinas of participants with dementia.
The purpose of this study is to evaluate the safety and efficacy of the ExAblate® Model 4000 Type 2.0 system as a tool to open the blood-brain barrier (BBB) in patients with probable Alzheimer's Disease (AD).