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Evidence-based standardized sample handling protocol for accurate blood-based Alzheimer's disease biomarker measurement : Results and consensus of the Global Biomarker Standardization Consortium

INTRODUCTION: Blood-based biomarkers (BBMs) have revolutionized Alzheimer's disease diagnosis and monitoring. Their pre-analytical stability requires scrutiny. This study assessed pre-analytical effects to inform a standardized sample handling protocol. METHODS: Assessed pre-analytical variations included collection tube type, hemolysis, centrifugation settings, centrifugation/storage delays, tube

Investigating Phosphorus Abundances in a Sample of APOGEE-2 Bulge Globular Clusters

Phosphorus-enhanced (P-rich; [P/Fe] ≳ +0.8) giants have been found among mildly metal-poor field stars, but in only one star in a globular cluster (GC), M4 (NGC 6121). Also, in a sample of bulge spheroid stars, some of them showed a moderate P enhancement in the range +0.5 < [P/Fe] < +1.0. In this paper we derive the P abundance of moderately metal-poor ([Fe/H] ≳ −1) GC stars, aiming to check if t

Handling nonlinear power amplifiers in massive MIMO : system-level tradeoffs

With the rapid growth of mobile communication systems, massive multiple-input multiple-output (MIMO) technology plays a key role in enhancing communication systems to meet growing data traffic demands. However, scaling the technology further challenges the system designers to balance design tradeoffs in order to provide efficient and low-cost communication systems. This requires efficient hardware

Underdiagnosis of positive resection margins and synchronous peritoneal metastases in locally advanced colon cancer : histopathological reassessment of primary resection in the COLOPEC trial

The aim of this study was to perform histopathological reassessment of primary resections of locally advanced colon cancer (CC) within a randomized controlled trial, with specific focus on surgical margins and synchronous locoregional peritoneal metastases (SL-PM), and to provide learning points for both surgeons and pathologists. All histopathological slides of patients with c/pT4N0-2M0 or perfor

Alzheimer's disease diagnostic progression is associated with cerebrovascular disease and neuroinflammation in adults with Down syndrome

INTRODUCTION: Despite having few vascular risk factors, people with Down syndrome (DS) have MRI evidence of cerebrovascular disease (CVD) and neuroinflammation that worsens with Alzheimer's disease (AD) severity. We investigated whether markers of CVD and inflammation are associated with AD-related diagnostic progression in people with DS. METHODS: We included 149 participants (mean age [SD] = 44.

The PREVENT-AD cohort : Accelerating Alzheimer's disease research and treatment in Canada and beyond

The PResymptomatic EValuation of Experimental or Novel Treatments for Alzheimer's Disease (PREVENT-AD) is an investigator-driven study that was created in 2011 and enrolled cognitively normal older adults with a family history of sporadic AD. Participants are deeply phenotyped and have now been followed annually for more than 12 years (median follow-up 8.0 years, SD 3.1). Multimodal magnetic reson

Quantitative cardiovascular magnetic resonance myocardial perfusion can discriminate significant cardiac allograft vasculopathy : a multi-centre study

Aims Cardiac allograft vasculopathy (CAV) is a significant complication that contributes to both morbidity and mortality after heart transplantation. The aim of this study was to (i) assess if quantitative cardiovascular magnetic resonance (CMR) myocardial perfusion could detect different stages of CAV and (ii) establish a myocardial perfusion reserve (MPR) cut-off for significant CAV. Methods and

Experimental Exposure to Noise Affects Hunting Behavior Already From a Young Age in a Nocturnal Acoustic Predator

Anthropogenic noise is an increasing form of environmental change that alters natural soundscapes. Human activities, including road traffic, have led to a notable increase in ambient noise, which may impair how animals use their sensory systems to fulfill vital activities. Previous experiments suggest that noise affects the hunting behavior of nocturnal predators, but it is still scarcely document

The Taiwan Government Narration of the Russo-Ukrainian War: Domestic and International Implications

This thesis aimed to analyze how the Taiwanese government narrates the Russo-Ukrainian war and why, regarding their foreign policy efforts and the articulation of a Taiwanese national identity. Twenty-nine articles from the Taiwanese Office of the President published between January and August 2022 were examined. In its discourse, Taiwan drew a parallel with the situation in Ukraine, portraying bo

Intergenerational effects of dietary changes on trait means and variance

Environmental stress can alter not only trait means but also trait variances - an often-overlooked evolvable feature with ecological and evolutionary relevance. We examine how dietary stress affects both the mean and variance of morphological and reproductive traits across two generations in clonal Daphnia. We manipulated maternal and offspring environments with high- (algae) or low-quality (cyano

Reflection seismic investigations on south Gotland, Sweden, to evaluate CO2 storage strategies

Reflection seismic data were acquired in the Sudret area of Gotland between 6 and 13 November 2023. Objectives of the survey were to obtain images of the subsurface down to the Precambrian basement in the vicinity of two cored boreholes that had been drilled earlier down to about 800 m. The seismic profiles were positioned to provide a better understanding of the sedimentary strata and local struc

The Kant Walks : in 1st Klaipėda Biennial

The Kant Walks, 2003–2004 - Photographic seriesJoachim Koester’s series The Kant Walks explores the physical paths once walked by philosopher Immanuel Kant in 18th-century Königsberg (now Kaliningrad) Bydocumenting these routes, Koester uncovers physical layers of history, abandoned settlements, and forgotten places His photographs – often depicting empty,decaying urban landscapes – pose the quest

On the self-assembly of αB-crystallin

The molecular chaperone αB-crystallin is a small heat shock protein that inhibits the aggregation of, among others, Aβ42 and α-synuclein. These proteins are major hallmarks of Alzheimer's and Parkinson's disease, respectively. In order to understand the mechanism with which αB-crystallin performs its chaperone function it is essential to characterize its self-assembly in terms of aggregate size di

Alzheimer's disease outlook : controversies and future directions

For the first time, reductions in cerebral β-amyloid pathology load and rate of cognitive and functional decline have been achieved in Alzheimer's disease, through pharmacological intervention in randomised controlled trials. However, the results from phase 3 randomised controlled trials of anti-β amyloid monoclonal antibodies are interpreted in different ways, with some experts supporting a clini

Intra-Operative Onychoscopy of Subungual Epidermoid Inclusions

Subungual epidermoid inclusions (SEI) are small epithelial inclusions, sometimes solid but mostly with central keratinization of the onycholemmal type without a granular layer. Exceptionally, they become large enough to produce symptoms such as pain or swelling of the nail bed, resulting in subungual keratosis, onycholysis, or a dystrophic nail plate. Herein, we report a further case of SEI in a f

Disciplinary and Methodological Pluralism in Loneliness Studies

Scientists may benefit from implementing interdisciplinary and multi-method approaches when studying loneliness. Loneliness is a complex phenomenon that is influenced by biological, psychological, social, cultural, and political factors. In addition, it also reflects and impacts personal and local experiences as well as broader social forces, thus being both universal and contextual at the same ti

Association between metabolic conditions, physical activity and self-efficacy before and after a first-line exercise and education intervention for osteoarthritis : a longitudinal register study using the SOAD cohort

Objectives To investigate the association of diabetes, hypertension and overweight/obesity with physical activity (PA), self-efficacy for pain and self-efficacy for other symptoms before and after a 6- week exercise and education intervention for knee and hip osteoarthritis (OA), and to assess outcome disparities based on metabolic health. Methods Register-based cohort study using the Swedish Oste

Association of type 2 diabetes with reoperation, adverse events and mortality after hip and knee replacement : a Swedish register-based study including 109 938 hip and 80 897 knee replacements

Objective Type 2 diabetes mellitus (T2DM) and osteoarthritis (OA) are globally prevalent chronic diseases that affect millions of individuals in ageing populations. Hip and knee replacements are well established and effective treatments in patients suffering from end-stage OA. Understanding how T2DM influences the outcomes of these surgeries is important for optimising patient care and improving s

Seasonal differences in observed versus modelled new particle formation at two European boreal stations

Realistic representation of atmospheric aerosol size distribution dynamics in large-scale climate models is important for developing accurate descriptions of aerosol-cloud interactions. Despite the dynamic nature of the distributions, which have large seasonal and diurnal changes, model evaluations often focus on the annual median size distribution. Using more comprehensive monthly and diurnal mod