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Plasma S100β is a predictor for pathology and cognitive decline in Alzheimer's disease.
Fluids Barriers CNS
January 2025
Sanders-Brown Center on Aging, College of Medicine, University of Kentucky, 760 Press Ave, 124 HKRB, Lexington, KY, 40536-0679, USA.
Background: Blood-brain barrier dysfunction is one characteristic of Alzheimer's disease (AD) and is recognized as both a cause and consequence of the pathological cascade leading to cognitive decline. The goal of this study was to assess markers for barrier dysfunction in postmortem tissue samples from research participants who were either cognitively normal individuals (CNI) or diagnosed with AD at the time of autopsy and determine to what extent these markers are associated with AD neuropathologic changes (ADNC) and cognitive impairment.
Methods: We used postmortem brain tissue and plasma samples from 19 participants: 9 CNI and 10 AD dementia patients who had come to autopsy from the University of Kentucky AD Research Center (UK-ADRC) community-based cohort; all cases with dementia had confirmed severe ADNC.
Study protocol for a hybrid type 3 effectiveness-implementation trial of a team-based implementation strategy to support educators' use of a social engagement intervention.
Implement Sci
January 2025
University of California, Los Angeles, Los Angeles, CA, 90025, USA.
Background: Remaking Recess (RR) is a school-based evidence-based peer social engagement intervention for autistic students. RR involves direct training and coaching with educators; however, educators face several barriers to implementation at both the individual- and organizational-levels. This protocol paper describes a multi-site study that will test whether an educator-level implementation strategy, coaching, with or without a school-level implementation strategy, school-based teams, will maximize educators' use (fidelity and sustainment) of RR for autistic students and their peers who are socially-isolated, rejected, or peripheral and may need additional support during recess.
View Article and Find Full Text PDFPersonal and behavioural factors that influence physical activity in women living with metastatic breast cancer: a qualitative interview study.
BMC Cancer
January 2025
The University of Sydney School of Health Sciences, Susan Wakil Health Building, Western Avenue, 2050, Camperdown, NSW, Australia.
Background: Women living with metastatic breast cancer can benefit from physical activity. Presently, there is an absence of research outside of quantitative investigations on the benefits of structured programs. To enable effective physical activity advice and services, it is important to understand factors that may facilitate or prevent engagement.
View Article and Find Full Text PDFExcited state dynamics of azanaphthalenes reveal opportunities for the rational design of photoactive molecules.
Commun Chem
January 2025
Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, UK.
Various photoactive molecules contain motifs built on aza-aromatic heterocycles, although a detailed understanding of the excited state photophysics and photochemistry in such systems is not fully developed. To help address this issue, the non-adiabatic dynamics operating in azanaphthalenes under hexane solvation was studied following 267 nm excitation using ultrafast transient absorption spectroscopy. Specifically, the species quinoline, isoquinoline, quinazoline, quinoxaline, 1,6-naphthyridine, and 1,8-naphthyridine were investigated, providing a systematic variation in the relative positioning of nitrogen heteroatom centres within a bicyclic aromatic structure.
View Article and Find Full Text PDFPterostilbene protects against lipopolysaccharide-induced inflammation and blood-brain barrier disruption in immortalized brain endothelial cell lines in vitro.
Sci Rep
January 2025
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China.
Brain microvascular endothelial cells are connected by tight junction (TJ) proteins and interacted by adhesion molecules, which participate in the selective permeability of the blood-brain barrier (BBB). The disruption of BBB is associated with the progression of cerebral diseases. Pterostilbene is a natural compound found in blueberries and grapes with a wide range of biological activities, including anti-inflammatory, antioxidant, and anti-diabetic effects.
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