Influence of Alzheimer's associated Aβ oligomers and oxidative stress on blood-brain barrier dysfunction.

Blood-brain barrier (BBB) dysfunction is an early event observed in Alzheimer's disease (AD). Two characteristics of AD brain and brain vasculature contribute to BBB dysfunction: the accumulation of aggregated amyloid-β protein (Aβ) and an increase in oxidative stress. This work uses a BBB model of primary human brain microvascular endothelial cells to investigate the individual and synergistic influence of both pathogenic Aβ oligomers and oxidative stress on BBB transendothelial electrical resistance (TEER), an indicator of barrier integrity.

How Do Patient Outcomes in Mechanical Thrombectomy for Large-Core Stroke Vary Based on Neuroimaging Modalities Used for Patient Selection? A Multicenter Multinational Study.

The role of different imaging modalities-non-contrast CT (NCCT), CT perfusion (CTP), and diffusion-weighted imaging (DWI)-in selecting patients with large-core stroke for endovascular thrombectomy (EVT) is a subject of ongoing debate. This study aims to determine whether patients with large-core acute ischemic stroke (AIS) undergoing EVT triaged with CTP or DWI in addition to NCCT had different clinical outcomes compared to those only triaged with NCCT. We queried the Stroke Thrombectomy and Aneurysm Registry (STAR) for patients enrolled between 2014 and 2023 who presented with anterior-circulation AIS and large ischemic core (ASPECTS < 6) who underwent EVT in 41 stroke centers in the USA, Europe, Asia, and South America.

Geographic Variations of Intensive Care Unit Admissions with Substance-Related Diagnoses in the United States.

BackgroundSubstance use is an important contributor to morbidity, mortality, and healthcare utilization in the United States. While prior research has explored regional differences in substance use and related hospitalizations, the geographic variation in substance-related ICU admissions remains underexplored. We sought to compare the prevalence of ICU admissions involving substance use across geographic divisions and between urban and rural ICUs in the United States.

Conventional versus advanced imaging selection for endovascular treatment of basilar artery occlusion strokes.

Introduction: Endovascular thrombectomy (EVT) is an effective treatment for basilar artery occlusion (BAO) stroke in select patients. While there is a growing body of literature suggesting that advanced imaging modalities such as computed tomography perfusion (CTP) and magnetic resonance (MR) may not be necessary for selecting anterior circulation large vessel occlusion stroke patients for EVT, whether advanced imaging may be superior to conventional imaging (non-contrast CT and CT angiography) in identifying good treatment candidates among BAO patients is less clear.

Patients And Methods: This was a multicenter retrospective cohort study of BAO EVT patients treated from 2013 to 2022 in the Stroke Thrombectomy and Aneurysm Registry.

Concurrent Anterior Cerebral Artery and Middle Cerebral Artery Occlusions Predict Poor Neurological Outcome Despite Successful Thrombectomy in Anterior Circulation Stroke.

Background And Objectives: Despite successful endovascular thrombectomy for acute ischemic stroke, a significant proportion of patients demonstrate fast and early progression of infarct core and fail to achieve functional independence at 90 days. The aim of this study was to evaluate the impact of thrombus location and the potential impact of collaterals on concurrent middle cerebral artery (MCA) and anterior cerebral artery (ACA) occlusion.

Methods: Data were included from a multicenter registry for patients undergoing endovascular thrombectomy for anterior circulation stroke from 32 international centers between 2015 and 2021.