Publications by authors named "Meyer L"

The regulation of cell physiology depends largely upon interactions of functionally distinct proteins and cellular components. These interactions may be transient or long-lived, but often affect protein motion. Measurement of protein dynamics within a cellular environment, particularly while perturbing protein function with small molecules, may enable dissection of key interactions and facilitate drug discovery; however, current approaches are limited by throughput with respect to data acquisition and analysis.

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Introduction: Mechanical thrombectomy (MT) is the standard of care in anterior circulation large vessel occlusion. A vital modifiable factor is successful reperfusion. While multiple passes improve the rates of successful reperfusion, previous studies have reported progressively diminishing returns.

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Background: Individuals who have recently acquired HIV represent a unique population because the time frame since HIV acquisition is relatively short and identification of missed HIV prevention opportunities is, therefore, closer to real time and less subject to recall bias. Identifying prevention measures used and missed opportunities for using them, can help stop further HIV transmission.

Objectives: This systematic review aims to synthesise current global evidence on uptake of HIV prevention methods among people with recently acquired HIV from 2007, the year that the concept of ART as a prevention method was first introduced.

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African rhinoceros undergo chemical immobilization and prolonged transport during translocations for conservation purposes and, hence, experience several pathophysiologic changes, including skeletal muscle injury. Potential concurrent myocardial injury has not been investigated due to a lack of validated immunoassays. We aimed to use inferred cardiac troponin I (cTnI) amino acid sequences of southern white () and southern-central black () rhinoceros to assess the potential usefulness of several commercial cTnI immunoassays for detecting cTnI in African rhinoceros.

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  • This study highlights that rates of PTSD are higher among sexual minority adults (LGB+) compared to heterosexual individuals, especially in the context of substance use disorders (SUD).
  • The research found that LGB+ individuals reported experiencing more trauma, higher PTSD severity, and greater difficulties with emotion regulation than their heterosexual counterparts.
  • Importantly, when emotion regulation difficulties were taken into account, the link between being a sexual minority and experiencing severe PTSD symptoms became less significant, suggesting that improving emotion regulation may help reduce PTSD severity in this population.
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  • The study investigates the potential benefits of mechanical thrombectomy for ischemic stroke patients with distal medium vessel occlusions, focusing on the role of computed tomography perfusion imaging.
  • The research analyzed data from 140 patients treated at a high-volume stroke center from 2015 to 2023, assessing the relationship between recanalization and functional outcomes using logistic regression analysis.
  • Findings suggest that while recanalization did not universally improve outcomes, significant treatment effects were observed in patients with larger hypoperfusion and penumbral volumes, indicating that penumbral imaging could help guide treatment decisions.
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Background: Lifestyle interventions for weight loss are generally ineffective in achieving clinically meaningful long-term reductions in body weight and may contribute to negative behavior such as weight cycling or disordered eating. Negative focus on high weight may also contribute to weight stigma. Weight stigma includes negative attitudes and discriminatory behavior toward people with big bodies and can result in psychological stress and unfavorable health outcomes.

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Abnormal accumulation of Tau protein in the brain disrupts normal cellular function and leads to neuronal death linked with many neurodegenerative disorders such as Alzheimer's disease. An attractive approach to mitigate Tau-induced neurodegeneration is to enhance the clearance of toxic Tau aggregates. We previously showed that upregulation of the fly gene protects against FUS- and Tau-induced photoreceptor degeneration in fly disease models.

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Refractoriness to initial chemotherapy and relapse after remission are the main obstacles to curing T cell acute lymphoblastic leukemia (T-ALL). While tumor heterogeneity has been implicated in treatment failure, the cellular and genetic factors contributing to resistance and relapse remain unknown. Here we linked tumor subpopulations with clinical outcome, created an atlas of healthy pediatric hematopoiesis and applied single-cell multiomic analysis to a diverse cohort of 40 T-ALL cases.

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Traumatic spinal cord injury (SCI) is a devastating condition for which effective neuroregenerative and neuroreparative strategies are lacking. The post-traumatic disruption of the blood-spinal cord barrier (BSCB) as part of the neurovascular unit (NVU) is one major factor in the complex pathophysiology of SCI, which is associated with edema, inflammation, and cell death in the penumbra regions of the spinal cord adjacent to the lesion epicenter. Thus, the preservation of an intact NVU and vascular integrity to facilitate the regenerative capacity following SCI is a desirable therapeutic target.

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Cryogenic phonon detectors with transition-edge sensors achieve the best sensitivity to sub-GeV/c dark matter interactions with nuclei in current direct detection experiments. In such devices, the temperature of the thermometer and the bias current in its readout circuit need careful optimization to achieve optimal detector performance. This task is not trivial and is typically done manually by an expert.

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Objectives: Current, real-world healthcare cost information is needed to project future expenditures and inform policy. We estimated the healthcare costs for adults in 2019 in the United States by age, sex, race/ethnicity, geographic region, and comorbidity.

Methods: We aggregated and summarized the healthcare costs in 2021 US dollars using claims data derived from Optum's deidentified Clinformatics® Data Mart Database, which includes inpatient, outpatient, and prescription claims for commercial and Medicare Advantage beneficiaries nationwide.

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Disease modifying therapies including interferon-β (IFNβ) effectively counteract the inflammatory component in relapsing-remitting multiple sclerosis (RRMS) but this action, generally associated with severe side effects, does not prevent axonal/neuronal damages. Hence, axonal neuroprotection, which is pivotal for MS effective treatment, remains a difficult clinical challenge. Growing evidence suggested as promising candidate for neuroprotection, Emapunil (AC-5216) or XBD173, a ligand of the mitochondrial translocator protein highly expressed in glial cells and neurons.

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MicroRNAs (miRNAs) play dual roles in acute lymphoblastic leukemia (ALL) as both tumor suppressors and oncogenes, and miRNA expression profiles can be used for patient risk stratification. Precise assessment of miRNA levels is crucial for understanding their role and function in gene regulation. Quantitative real-time polymerase chain reaction (qPCR) is a reliable, rapid, and cost-effective method for analyzing miRNA expression, assuming that appropriate normalization to stable references is performed to ensure valid data.

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  • Research shows that search engine algorithms, like Bing's, don't typically expose users to unreliable websites.
  • Most interactions with unreliable sources happen when users specifically search for those sites, which is a very small part of overall searches.
  • This indicates that user preferences play a significant role in engaging with unreliable information, rather than the algorithms themselves.
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The human brain tracks regularities in the environment and extrapolates these to predict future events. Prior work on music cognition suggests that low-frequency (1-8 Hz) brain activity encodes melodic predictions beyond the stimulus acoustics. Building on this work, we aimed to disentangle the frequency-specific neural dynamics linked to melodic prediction uncertainty (modelled as entropy) and prediction error (modelled as surprisal) for temporal (note onset) and content (note pitch) information.

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Hidden boron catalysis plagues catalyzed hydroboration reactions, with the "catalyst" acting to mediate the decomposition of HBpin/HBcat to BH which is the actual (hidden) catalyst. ,,,'-Tetramethylethylenediamine (TMEDA) has been used to identify hidden boron catalysis through trapping/inhibition. Kinetic analyses showed that TMEDA inhibition is only applicable below 60 °C and that other amine traps are likewise ineffective.

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Deep learning is increasingly permeating neuroscience, leading to a rise in signal-processing applications for extracellular recordings. These signals capture the activity of small neuronal populations, necessitating 'spike sorting' to assign action potentials (spikes) to their underlying neurons. With the rise in publications delving into new methodologies and techniques for deep learning-based spike sorting, it is crucial to synthesise these findings critically.

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Introduction: HIV replication leads to a change in lymphocyte phenotypes that impairs immune protection against opportunistic infections. We examined current HIV replication as an independent risk factor for tuberculosis (TB).

Methods: We included people living with HIV from 25 European cohorts 1983-2015.

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In an effort to respond to the large surge in COVID-19 cases in Arizona that began between May and July 2020, the Arizona State University (ASU) Student Outbreak Response Team (SORT) formed a remote, volunteer-based case investigation team that worked in partnership with a local public health department through delegated public health authority.

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  • * When T cell receptors are activated, NAADP is quickly produced, interacting with specific proteins that trigger the release of calcium from internal stores, leading to a rise in intracellular calcium levels.
  • * A new high-resolution imaging technique using two calcium indicators, along with a Python-based detection system, allows for the precise capture and analysis of these dynamic Ca microdomains in T cells and other cell types.
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  • - This study evaluated the outcomes of patients with low grade endometrial stromal sarcoma (LG-ESS), particularly focusing on recurrence-free survival (RFS) and overall survival (OS) associated with different hormonal therapies during treatment from 2000 to 2023.
  • - Among 221 patients, surgery was the primary treatment, and while there was no significant difference in RFS and OS between the hormonal therapies Megace and Letrozole, Megace showed better OS during recurrence.
  • - Factors like negative status of estrogen, smooth muscle actin, and desmin were linked to poorer survival rates, suggesting the need for further research to optimize treatment strategies for LG-ESS.
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Language comprehension involves the grouping of words into larger multiword chunks. This is required to recode information into sparser representations to mitigate memory limitations and counteract forgetting. It has been suggested that electrophysiological processing time windows constrain the formation of these units.

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  • * Using a cohort of over 3,600 participants, researchers measured levels of specific antibodies and assessed SARS-CoV-2 infection outcomes over the next six months.
  • * Results showed that higher anti-Spike IgG antibody levels correlated with reduced infection risk in the control group, but this was not the case for individuals in specific patient populations.
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