View clinical trials related to Alzheimer Disease.
Filter by:Because of a shared ontogenic origin, the retina displays similarities to the brain and spinal cord in terms of anatomy, functionality, response to insult, and immunology. Hence, the retina can be approached as an integral part of the central nervous system. The occurence of ocular manifestations in several neurodegenerative pathologies, such as Alzheimer's disease and Parkinson's disease, accentuates the strong relationship between eye and brain. Particularly retinal changes can present a substrate for cerebral changes in these disorders. Offering a 'window to the brain', the transparent eye enables non-invasive imaging of these changes in retinal structure and vasculature. In this project, the potential of retinal biomarkers for e.g. Alzheimer's will be explored with the aim to overcome some of the hurdles in the current management of these pathologies, mainly the lack of techniques for patient screening and early diagnosis. The aim of this clinical trial is to correlate the retinal biomarkers for Alzheimer's with neuro-imaging, and cognitive function. Integrating the results will yield non-invasive retinal biomarkers for clinical research, screening, and follow-up of disease progression in various neurodegenerative disorders.
This project intends to address the gaps in Alzheimer's disease (AD) and precision medicine (PM) research in American Indian and Alaska Native (AI/AN) populations by comparing written and video-based materials for recruitment into AD and PM research, and by creating an AD-PM registry of AI/AN individuals who are willing to be contacted for future research opportunities.
The prevalence of neurodegenerative diseases will increase over the next decades driven by ageing population. It seems important to develop reliable, replicable and accessible diagnostic tools. This is a prospective study whose objective is to study the spatio-temporal parameters of gait in patients with Alzheimer's and Lewy body diseases. 64 patients were included in this study. A comparison of the two pathologies was conducted, followed by an analysis based on four groups (mild, severe Alzheimer's disease, mild, severe Lewy body disease) and a study of the severity of the diseases. To study these parameters, we used the Gaitrite treadmill. The analysis of spatio-temporal parameters of walking in Alzheimer's disease and Lewy body disease enables to identify discriminating variables between the two pathologies. The probability of suffering from an Alzheimer's disease decreases with the pace increase but increases with variations in length of the step, and with the rotation of the foot. While the probability of suffering from Lewy body disease increases with the pace, variations in the step duration, and the duration of double support. These results are interesting but do not allow to establish a diagnostic score for these two diseases. The monitoring of the variations of these parameters at individual level would probably be more relevant and would enable to detect dual pathologies.
In Alzheimer's disease (AD), neurofibrillary degeneration (NFD) is characterized by the intraneuronal aggregation of Tau proteins. The pathology progresses through a hierarchical pathway that may be associated with the intercellular transmission of pathology as demonstrated in our rat models. This transmission implies that Tau is actively secreted and may participate to the first steps of Tau pathology spreading. It is demonstrated in cell lines and animal models (rodents and non-human primates) that Tau is secreted not only in free forms but also in extracellular vesicles. If Tau is found in biological fluids before neuronal death it may represent an early marker of the NFD and will also define therapeutically targets. In this context, the aim is now to transfer this knowledge in humans and to decipher the nature of Tau secreted in plasma and cerebrospinal fluids collected from healthy controls to AD patients, and to decipher if the presence of tau inside vesicles is influenced by the pathology.
The objective of the present study is to evaluate the effectiveness of a general practitioner (MG) management strategy guided by a multidimensional evaluation on the multidimensional score of fragility of patients with mild to moderately severe dementia, compared to those currently implemented (without the provision of such an assessment). The measurement of the respective effectiveness of the two types of care in primary care will itself be based on a multidimensional evaluation performed independently in the memory center having established the diagnosis of Alzheimer's disease. The secondary objectives are the evaluation of the impact of the strategy on the functional abilities of patients, the incidence of geriatric syndromes, cognitive functions, quality of life of the patient and the burden of the primary caregiver. The efficiency of the strategy will be assessed through a cost-effectiveness analysis. A survey of opinions will also be conducted among primary health care providers, carers and CMs on the implemented system.
The primary goal of this study is to evaluate the efficacy and safety of the DBS to the fornix/NbM among patients who are diagnosed as AD according to a series of evaluations including cerebrospinal fluid (CSF) biomarkers and molecular imaging examinations; The secondary goal is to compare the efficacy among the two treatment groups of different targets.
Alzheimer's Disease (AD) is the most frequent neurodegenerative disease associated with dementia, with a constantly increasing prevalence associated with an aging population. Amyloid deposition is considered the first molecular event occurring in AD: as already showed in an animal model, a low-dose radiotherapy (RT) course is capable of reducing AD-associated amyloid-β plaques and improve cognitive function. This pilot study wishes to investigate in 10 patients with a diagnosis of prodromal or early probable AD and with evidence of amyloid pathology the effectiveness of a short course low dose RT radiotherapy to reduce amyloid deposits in the human brain using molecular imaging (18F-Florbetapir) to show the effectiveness of the treatment on the specific target.
The specific aim of this study is to investigate rod, cone and melanopsin driven pupillary light response in individuals with progressive supranuclear palsy (PSP), age-matched healthy controls and individuals with other neurodegenerative diseases using chromatic pupillometry, with special interest in assessing melanopsin-driven post-illumination pupil response (PIPR) as an identifier for PSP. The study addresses the following hypotheses: 1. Chromatic pupil responses, including rod/cone-driven rapid phase constriction and melanopsin-driven PIPR, are reduced in subjects with PSP compared to age-matched normal healthy control subjects, 2. Pupil parameters of the melanopsin-driven PIPR are abnormal in PSP subjects without supranuclear palsy, which is indicative of a subclinical physiological deficit of the OPN in the early stages of PSP. If these hypotheses are upheld, chromatic pupillometry to measure the PIPR promises to be a reliable in vivo, non-invasive, convenient and inexpensive technique to detect asymptomatic pupillomotor impairment in advance of diagnostic oculomotor signs and deterioration of cognitive function.
This 3-phase research plan to employ Behavioral and Environmental Sensing and Intervention (BESI) will overcome the fundamental scientific barriers to realizing prediction of agitation episodes and detection early stages of dementia related agitation. The goal of which is empowering caregivers to intervene early and ultimately reduce agitation, thus reducing caregiver burden and extending aging-in-place and improving the associated quality-of-life and cost benefits.
Alzheimer's disease and related diseases (ADRD) are a major public health issue. In France, nearly 900,000 people have ADRD, which represents about 70% of dementia cases, and the expected prevalence for 2020 is 1.2 million. Patients with ADRD have cognitive, behavioral and functional impairments that lead to progressive impairment of quality of life and autonomy. Maintaining them at home depends predominantly on their caregivers, mainly family, spouse or child. By definition, the caregiver is "the person who provides partial or total support to an elderly dependent person or a person with a disability in the vicinity of the victim for the activities of daily life". The investment of caregivers is therefore both human and financial, representing a greater or lesser burden. This burden can significantly affect their quality of life. Indeed, studies have shown that caregivers suffer from depletion, anxiety, depression and sleep disorders resulting in a deterioration of their health, leading them to greater care consumption. They would be more prone to cardiovascular diseases and cancer. A review of the literature from 2009 examined 66 studies evaluating the contribution of various technologies targeting demented patients and their caregivers. Of these, only 10 dealt with independence at home and the well-being of the patient and his / her caregiver. The main limitations of these studies are the small samples (ranging from 1 to 6 patients), the degree of cognitive degradation (mainly moderately severe) and the lack of standardized assessment. Although new technologies promise powerful home-based solutions, studies evaluating their efficacy for patients with ADRD and their caregivers remain scarce and fragile at the level of evidence due to methodological biases.