Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1097/MPG.0b013e318203f907 | DOI Listing |
Background: Inclusions of TAR DNA binding protein of 43kDa (TDP-43) constitute the main characteristic pathology in the majority (∼97%) of amyotrophic lateral sclerosis (ALS) cases and approximately 50% of patients with frontotemporal lobar degeneration (FTLD). TDP-43 is a nuclear RNA binding protein; however, in disease, it becomes hyperphosphorylated and/or insoluble, hindering its nuclear function in maintaining RNA homeostasis. Importantly, the incidence of TDP-43 proteinopathy extends to aging brains (LATE) and may be concomitant with Alzheimer's disease (AD) neuropathological changes (LATE/AD) in up to 70% of AD patients.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA.
Background: Glaucoma is characterized by progressive optic nerve degeneration that results in irreversible blindness, and it can be considered a neurodegenerative disorder of both the eye and the brain. Increasing evidence suggest that glaucoma shares some common neurodegenerative pathways with Frontotemporal Lobar Degeneration (FTLD), Amyotrophic Lateral Sclerosis (ALS), and Alzheimer's Disease (AD) among others. Interestingly, a recent study revealed the presence of abnormal TAR DNA-binding protein 43 (TDP-43) inclusions and aggregates in retinal ganglion cells and other retinal cell types in FTLD-TDP patients; however, the significance of this pathology and its impact on retinal function and optical nerve integrity is unknown.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
The University of British Columbia, Vancouver, BC, Canada.
Background: Limbic-predominant age-related TDP-43 encephalopathy neuropathological change (LATE-NC) is a pathological process diagnosed at autopsy, involving deposition of TDP-43 in the medial temporal lobes. The name LATE-NC was recently proposed to represent the pathological process, while "LATE" has been suggested to represent the clinical syndrome. However, there are currently no available criteria to diagnose this syndrome during life, and the clinical phenotype is not well understood.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Cornell University, Ithaca, NY, USA.
Background: Several genetic and cardiovascular risk factors increase incidence of Alzheimer's disease and related dementias (ADRD). Hypertension and the ε4 allele of apolipoprotein E (ApoE) are powerful drivers of cognitive impairment in ADRD. These risk factors are also associated with decreased cerebral blood flow (CBF).
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Alzheimer's Center at Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA.
Background: The blood-brain barrier (BBB) is a crucial regulator of cerebral homeostasis and function. Cerebrovascular endothelial cells (EC) are important components of the BBB, and EC damage and/or dysfunction may result in defects in brain clearance and perfusion, microhemorrhages, inflammation, and neurodegeneration. In addition to EC damage resulting from the presence of amyloid-beta (Aβ) in Alzheimer's Disease (AD) and Cerebral Amyloid Angiopathy (CAA), the presence of cardiovascular risk factors (CVRF) may further exacerbate cerebrovascular function and neurodegeneration.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!