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Angiopoietin-2 aggravates Alzheimer's disease by promoting blood-brain barrier dysfunction and neuroinflammation

3 days 23 hours ago
Disruption of the blood-brain barrier (BBB) increases vascular permeability and promotes neuroinflammation, contributing to Alzheimer's disease (AD) progression. However, the molecular drivers of BBB dysfunction and neuroinflammation in AD remain poorly defined. Here, we identify angiopoietin-2 (ANGPT2) as a central mediator of BBB breakdown and AD progression. Transcriptomic analyses of human AD brains revealed elevated ANGPT2 expression in endothelial cells correlating with disease severity....
Eunhyeong Lee

Alpha band activity mediates age-related effects on three distinct aspects of working memory dynamics

3 days 23 hours ago
Working memory (WM) processes decline with increasing age. According to recent concepts, it is necessary to differentiate between dynamically changing 'WM states' which are regulated via gating mechanisms. We investigated which neural oscillatory processes underlying WM gating and updating are affected by age with a focus on alpha and theta band activity. With an EEG beamforming approach, we examined the data of N = 132 healthy individuals aged 18-76 years who performed the reference-back...
Charlotte Pscherer

TNFalpha is a trigger of aging-associated liver inflammation in mice

3 days 23 hours ago
Tumor necrosis factor α (TNFα) regulates inflammation in metabolic diseases and probably aging-associated inflammation. Here, TNFα´s role in aging-related liver inflammation and fibrosis and underlying mechanisms was assessed in mice. In male C57BL/6J mice, aging increased hepatic inflammation, senescence markers p16 and p21 and Tnfa mRNA expression in liver tissue. In a second study, 4 and 24-month-old TNFα^(-/-) and wild-type (WT) mice were compared for senescence, liver damage, intestinal...
Haktan Övül Bozkir