Publications by authors named "Estes L"

While several studies have focused on preliminary data and outcomes associated with prehospital buprenorphine administration interventions, to date there has been little discussion of the challenges experienced during the initial implementation of a prehospital buprenorphine protocol. In this case series we examine 3 separate patient encounters with different crews, patients, and receiving emergency medicine (EM) physicians, which highlight initial challenges experienced with implementing the first prehospital buprenorphine program in a rural Appalachian County within South Carolina. In 2 cases we highlight conflicts that may require collegial intervention and education of local receiving EM physicians regarding the new prehospital protocol.

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Coronaviruses (CoVs) maintain large RNA genomes that frequently undergoes mutations and recombination, contributing to their evolution and emergence. In this study, we find that SARS-CoV-2 has greater RNA recombination frequency than other human CoVs. In addition, coronavirus RNA recombination primarily occurs at uridine (U)-enriched RNA sequences.

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Rationale: Firefighters are at risk for cardiovascular disease due to occupational-related inflammation, oxidative stress, and lifestyle practices. Astaxanthin (AX) possesses anti-inflammatory/antioxidant and purported ergogenic properties. This study examined the impact of supplementing the diet with 12 mg/d AX for four weeks on markers of inflammation, oxidative stress, cardiometabolic health, exercise capacity, and occupation-related performance in career firefighters.

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Background: The clinical utility of rapid multiplex respiratory specimen PCR panels for pneumonia for patients with suspected pneumonia is undefined. We aimed to compare the effect of the BioFire FilmArray pneumonia panel (bioMérieux, Salt Lake City, UT, USA) with standard of care testing on antibiotic use in a real-world hospital setting.

Methods: We conducted a single-centre, open-label, pragmatic, randomised controlled trial at the Mayo Clinic, Rochester, MN, USA.

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The optimal dosing strategy of antimicrobial agents in critically ill patients receiving extracorporeal membrane oxygenation (ECMO) is unknown. We conducted comprehensive review of existing literature on effect of ECMO on pharmacokinetics and pharmacodynamics of antimicrobials, including antibacterials, antifungals, and antivirals that are commonly used in critically ill patients. We aim to provide practical guidance to clinicians on empiric dosing strategy for these patients.

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Unlabelled: () is a microalgae extract that contains fucoxanthin and has been shown to enhance cognitive function in younger populations. The present study assessed if supplementation affects cognition in healthy, young-old, physically active adults with self-perceptions of cognitive and memory decline.

Methods: Forty-three males and females (64.

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Background: Ashwagandha has been reported to reduce stress and attenuate cognitive decline associated with inflammation and neurodegeneration in clinical populations. However, the effects as a potential nootropic nutrient in younger populations are unclear. This study examined the effects of liposomal ashwagandha supplementation on cognitive function, mood, and markers of health and safety in healthy young men and women.

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Background: This study evaluates a novel multidisciplinary program providing expanded access to hepatitis C virus (HCV) treatment for rural Appalachian patients in South Carolina. This program identified patients via an opt-out emergency department screening program, and it aimed to achieve HCV cure by using community paramedics (CPs) to link and monitor patients from treatment initiation through 12-week sustained virologic response (SVR).

Methods: Patients aged ≥18 years who were HCV RNA positive were eligible for enrollment if they failed to appear for a scheduled HCV appointment or reported barriers to accessing office-based treatment.

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Article Synopsis
  • - The study focuses on how mutations in SARS-CoV-2 variants, particularly the Delta variant, can help us understand both the virus's biology and the public health impact of these changes.
  • - Researchers identified a specific mutation (G215C) in the nucleocapsid (N) protein that creates a disulfide bond, leading to more stable protein structures (dimers) which enhance viral growth.
  • - The G215C mutation also results in the production of larger virions that contain more nucleocapsid proteins, indicating a potential impact on how the virus spreads.
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Article Synopsis
  • SARS-CoV-2 interacts with host proteins to enhance viral replication and evade immune responses, with a focus on its NSP3 protein.
  • Researchers discovered that NSP3 binds to fragile X mental retardation proteins (FMRPs), and mutations preventing this binding lead to reduced virus replication and lower viral levels in lungs.
  • The study highlights how NSP3 disrupts the normal function of FMRPs by competing with another protein, shedding light on both viral mechanisms and potential links to fragile X syndrome.
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Viruses interact with numerous host factors to facilitate viral replication and to dampen antiviral defense mechanisms. We currently have a limited mechanistic understanding of how SARS-CoV-2 binds host factors and the functional role of these interactions. Here, we uncover a novel interaction between the viral NSP3 protein and the fragile X mental retardation proteins (FMRPs: FMR1 and FXR1-2).

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Article Synopsis
  • SARS-CoV-2 Omicron variants show over 30 new amino acid mutations, particularly in the spike protein, with three specific mutations in a less-studied region (CTS1) being the focus of this research.
  • The study created a triple mutant (YKH) that increased spike protein processing and a single N679K mutant, which resulted in lower viral replication and less disease severity.
  • Despite being a loss-of-function mutation, N679K showed enhanced replication in the upper airway compared to wild-type virus in hamsters, suggesting it may affect the virus's transmissibility.
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Background: Transfusion of blood products is life-saving and time-sensitive in the setting of acute blood-loss anemia, and is increasingly common in the emergency medical services (EMS) setting. Prehospital blood products are generally "cold-stored" at 4°C, then warmed with a portable fluid-warming system for the purpose of preventing the "lethal triad" of hypothermia, acidosis, and coagulopathy. This study aims to evaluate body temperature changes of EMS patients receiving packed red blood cells (PRBC) and/or fresh frozen plasma (FFP) when using the LifeWarmer Quantum Blood & Fluid Warming System (LifeWarmer, https://www.

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Mapping the characteristics of Africa's smallholder-dominated croplands, including the sizes and numbers of fields, can provide critical insights into food security and a range of other socioeconomic and environmental concerns. However, accurately mapping these systems is difficult because there is 1) a spatial and temporal mismatch between satellite sensors and smallholder fields, and 2) a lack of high-quality labels needed to train and assess machine learning classifiers. We developed an approach designed to address these two problems, and used it to map Ghana's croplands.

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Despite technological advancement, nosocomial infections are prevalent due to the rise of antibiotic resistance. A combinatorial approach with multimechanistic antibacterial activity is desired for an effective antibacterial medical device surface strategy. In this study, an antimicrobial peptide, nisin, is immobilized onto biomimetic nitric oxide (NO)-releasing medical-grade silicone rubber (SR) via mussel-inspired polydopamine (PDA) as a bonding agent to reduce the risk of infection.

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Attention-deficit/hyperactivity disorder (ADHD) a common neurodevelopmental disorder of childhood and often comorbid with other externalizing disorders (EDs). There is evidence that externalizing behaviors share a common genetic etiology. Recently, a genome-wide, multigenerational sample linked variants in the Lphn3 gene to ADHD and other externalizing behaviors.

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For biodiversity protection to play a persuasive role in land-use planning, conservationists must be able to offer objective systems for ranking which natural areas to protect or convert. Representing biodiversity in spatially explicit indices is challenging because it entails numerous judgments regarding what variables to measure, how to measure them, and how to combine them. Surprisingly few studies have explored this variation.

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Antimicrobial spectrum scoring is a method to quantify the spectrum of antimicrobial utilization. Herein, we applied a locally adapted scoring system, with other pre-existing scoring systems, using a data set of prophylactically administered antibiotics following a 2-stage antimicrobial stewardship program (ASP) intervention in a population of patients on extracorporeal membrane oxygenation (ECMO).

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Article Synopsis
  • Researchers have developed the single-molecule adenine methylated oligonucleosome sequencing assay (SAMOSA) to better understand nucleosome organization on chromatin fibers through high-throughput single-molecule sequencing.
  • SAMOSA combines two techniques to measure nucleosome positions without altering the chromatin, allowing for immediate classification of nucleosome occupancy states.
  • Findings indicate that chromatin exhibits both regular and irregular nucleosome patterns, particularly highlighting unexpected irregularities in constitutive heterochromatin, thus providing insights into the complexity of chromatin structure.
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Biomedical surface-associated infections and thrombus formation are two major clinical issues that challenge patient safety and patient the fate of a medical device in the body . Single platform multifunctional surfaces are critical to address both these indwelling medical device-related problems. In this work, bio-inspired approaches are employed to fabricate a polymer composite with a versatile surface that can reduce bacterial infections and platelet adhesion in vitro.

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Hypothesis: Broad-spectrum antimicrobials are needed to mitigate the complicated nature of antibiotic-resistant infections. It is imperative to formulate new antimicrobials by combining agents with different mechanisms and broader microbial targets. A combined antimicrobial solution could be a highly critical step towards developing a strategy to prevent polymicrobial infections.

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Protein conformations are shaped by cellular environments, but how environmental changes alter the conformational landscapes of specific proteins remains largely uncharacterized, in part due to the challenge of probing protein structures in living cells. Here, we use deep mutational scanning to investigate how a toxic conformation of α-synuclein, a dynamic protein linked to Parkinson's disease, responds to perturbations of cellular proteostasis. In the context of a course for graduate students in the UCSF Integrative Program in Quantitative Biology, we screened a comprehensive library of α-synuclein missense mutants in yeast cells treated with a variety of small molecules that perturb cellular processes linked to α-synuclein biology and pathobiology.

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By collecting data at spatial and temporal scales that are inaccessible to satellite and field observation, unmanned aerial vehicles (UAVs) are revolutionizing a number of scientific and management disciplines. UAVs may be particularly valuable for precision agricultural applications, offering strong potential to improve the efficiency of water, nutrient, and disease management. However, some authors have suggested that the UAV industry has overhyped the potential value of this technology for agriculture, given that it is difficult for non-specialists to operate UAVs as well as to process and interpret the resulting data.

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