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Cardiac pathology associated with hypertension and chronic kidney disease in aged cats.
J Comp Pathol
January 2025
Department of Comparative Biomedical Sciences, Royal Veterinary College, University of London, Royal College Street, London NW1 0TU, UK. Electronic address:
Hypertension is a common condition in older cats, often secondary to chronic kidney disease (CKD). Although the heart is one of the organs damaged by hypertension, the pathology of the feline hypertensive (HT) heart has been poorly studied. The aim of this retrospective study was to describe the gross and microscopic pathology of hearts obtained from cats at post-mortem examination and to compare cats diagnosed with hypertension with cats of similar age and kidney function for which antihypertensive treatment was not deemed clinically necessary.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Laboratory for Neuropathology, KU Leuven, Leuven, Belgium.
Background: In 43-63% of symptomatic Alzheimer's disease (AD) patients, there is an observed accumulation of misfolded alpha-synuclein (αSyn). Two primary αSyn subtypes have been identified based on the underlying spreading pattern of this pathology: caudo-rostral and amygdala-predominant. Interactions between pathological TDP-43, Tau, and αSyn can aggravate their spread and aggregation.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
College of Public Health, University of Kentucky, Lexington, KY, USA.
Background: Brain arteriolosclerosis (B-ASC) is a pathologic hallmark characterized by dysmorphic brain arteriolar wall thickening. B-ASC is a common finding at autopsy in aged persons - some degree of B-ASC is seen in >80% of brains beyond age 80 years - and is associated with cognitive impairment. Hypertension and diabetes are widely recognized as risk factors for B-ASC.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Rush Alzheimer's Disease Center, Chicago, IL, USA.
Background: The recent approval of two anti-amyloid antibodies, Aducanamab and Lecanamab, have set the stage for the next generation of anti-amyloid treatments. Despite the capability of these treatments to lower Aβ brain levels, there is thus far limited clinical efficacy on cognitive outcomes. Because eligibility for treatment includes individuals with MCI or mild dementia, that often harbor mixed pathologies, the cognitive impact of other brain pathologies may be important.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA.
Article Synopsis
- Asymptomatic Alzheimer's disease (AsymAD) is characterized by the presence of Alzheimer's pathology in individuals who maintain cognitive function, showing lower neuroinflammation compared to symptomatic Alzheimer's disease cases.
- Research using postmortem brain samples revealed that AsymAD subjects have unique characteristics such as enriched core plaques and reduced tau aggregation, along with increased microglial activity around amyloid plaques.
- The study suggests that the composition of the plaque microenvironment, particularly enhanced actin-based motility pathways in microglia, may play a key role in the resilience to Alzheimer's pathology and cognitive decline in AsymAD individuals.
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