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Neuropathological contributions to grey matter atrophy and white matter hyperintensities in amnestic dementia.
Alzheimers Res Ther
January 2025
Laboratory for Clinical Neuroscience, Center for Biomedical Technology, Universidad Politécnica de Madrid, IdISSC, Crta M40, km38, Madrid, 28223, Spain.
Background: Dementia patients commonly present multiple neuropathologies, worsening cognitive function, yet structural neuroimaging signatures of dementia have not been positioned in the context of combined pathology. In this study, we implemented an MRI voxel-based approach to explore combined and independent effects of dementia pathologies on grey and white matter structural changes.
Methods: In 91 amnestic dementia patients with post-mortem brain donation, grey matter density and white matter hyperintensity (WMH) burdens were obtained from pre-mortem MRI and analyzed in relation to Alzheimer's, vascular, Lewy body, TDP-43, and hippocampal sclerosis (HS) pathologies.
Mild behavioral impairment in idiopathic REM sleep behavior disorder and Lewy body disease continuum.
J Neural Transm (Vienna)
January 2025
Department of Neurology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University of College of Medicine, Seoul, Republic of Korea.
To investigate the clinical impact of mild behavioral impairment (MBI) in a predefined cohort with Lewy body disease (LBD) continuum. Eighty-four patients in the LBD continuum participated in this study, including 35 patients with video-polysomnography-confirmed idiopathic REM sleep behavior disorder (iRBD) and 49 clinically established LBD. Evaluations included the Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS), neuropsychological tests, and MBI Checklist (MBI-C).
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Israel.
Background: Amyloid beta (Aβ) deposition marks an early stage in the progression of Alzheimer's disease (AD), detectable in-vivo years before symptoms emerge and targeted by recently FDA-approved drugs. This has propelled advancements in understanding, measuring, and treating AD, paving the way for disease prevention in those at risk. However, the psychological impact of disclosing Aβ status to cognitively unimpaired individuals remains underexplored.
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
Neurology Department Infanta Leonor Hospital, Madrid, Spain.
Background: biomarkers are essential in order to make a diagnosis with a high level of accuracy in patients with cognitive and behavior complaints. However, molecular imaging biomarkers not always provide an answer in daily clinical practice.
Methods: retrospective and descriptive study in patients with Amyloid PET (APscans) implemented according to rational use of this technic, between January 2019-November 2023 in Neurology Department, Infanta Leonor Hospital, Madrid, Spain.
Background: The immune system is substantially involved in the development and progression of age-related cognitive decline and Alzheimer's disease (AD).
Method: As genetic and environmental factors interactively impact these conditions, we investigated how risk factors such as APOE genotype, age, and sex influence immune activation markers and AD biomarkers in cerebrospinal fluid (CSF) in elderly individuals enrolled in the Mayo Clinic Study of Aging cohort. Among cognitively unimpaired individuals aged over 65 at the baseline visit (N=298), we measured 365 CSF immune activation markers using the proximity extension assay.
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