Aim: To study signs of neurodegeneration in the retina in multiple sclerosis.
Material And Methods: We studied the retinal nerve fiber layer (RNFL) in 265 (524 eyes) patients.
Results And Conclusion: We identified a reliable thinning of RNFL of both eyes in patients with relapsing-remitting multiple sclerosis (MS). A comparative analysis by sectors revealed a specific decrease in RNFL in temporal segments and papillomacular beam. Mean values of RNFL in patients with clinically isolated syndrome did not differ from those in controls. Thickening of RNFL of low segments (NI и TI) and decrease in the thickness of the upper temporal segment (TS) were found. The results have demonstrated that neurodegenerative signs in the retina may be early appearances of MS. Optical coherence tomography allows to perform objective and rapid screening of retinal neurodegenerative changes.
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http://dx.doi.org/10.17116/jnevro2015115829-13 | DOI Listing |
Geroscience
December 2024
Laboratory of Neurodegenerative Diseases, Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki (CIRI-AUTh), 54124, Thessaloniki, Greece.
The accurate diagnosis of aging-related neurocognitive disorders as early as possible, even in a phase that is characterized by the absence of clinical symptoms, is nowadays the holy grail of the neurosciences. R4Alz-R is a novel cognitive tool designed to objectively detect the subtle cognitive changes that emerge as the very first result of the aging processes and could be developed and broadened in a continuum from healthy aging to subjective cognitive impairment (SCI) and mild cognitive impairment (MCI), before reaching some type of dementia. The goal of the present study was to examine whether the R4Alz-R battery has the potential to detect these subtle changes.
View Article and Find Full Text PDFJ Neuropathol Exp Neurol
December 2024
Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
Although Alzheimer disease neuropathologic change (ADNC) is the most common pathology underlying clinical dementia, the presence of multiple comorbid neuropathologies is increasingly being recognized as a major contributor to the worldwide dementia burden. We analyzed 1051 subjects with specific combinations of isolated and mixed pathologies and conducted multivariate logistic regression analysis on a cohort of 4624 cases with mixed pathologies to systematically explore the independent cognitive contributions of each pathology. Alzheimer disease neuropathologic change and limbic-predominant age-related TDP-43 encephalopathy neuropathologic change (LATE-NC) were both associated with a primary clinical diagnosis of Alzheimer disease (AD) and were characterized by an amnestic dementia phenotype, while only ADNC associated with logopenic variant primary progressive aphasia (PPA).
View Article and Find Full Text PDFFront Neurosci
December 2024
German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany.
Background: Extracellular vesicles are easily accessible in various biofluids and allow the assessment of disease-related changes in the proteome. This has made them a promising target for biomarker studies, especially in the field of neurodegeneration where access to diseased tissue is very limited. Genetic variants in the LRRK2 gene have been linked to both familial and sporadic forms of Parkinson's disease.
View Article and Find Full Text PDFFront Cell Neurosci
December 2024
Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
Introduction: Abnormal intracellular accumulation of Tau aggregates is a hallmark of Alzheimer's disease (AD) and other Tauopathies, such as Frontotemporal dementia (FTD). Tau deposits primarily affect neurons, but evidence indicates that glial cells may also be affected and contribute distinctively to disease progression. Cells can respond to toxic insults by orchestrating global changes in posttranslational modifications of their proteome.
View Article and Find Full Text PDFFEBS J
December 2024
Department of Neuroinflammation, UCL Queen Square Institute of Neurology, University College London, UK.
The microglial triggering receptor expressed on myeloid cells 2 (TREM2) is required for diverse microglia responses in neurodegeneration, including immunometabolic plasticity, phagocytosis, and survival. We previously identified that patient iPSC-derived microglia (iPS-Mg) harboring the Alzheimer's disease (AD) TREM2 hypomorph display several functional deficits linked to metabolism. To investigate whether these deficits are associated with disruptions in metabolite signaling, we generated common variant, TREM2 and TREM2 variant human iPS-Mg.
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