Publications by authors named "Ryan Hall"

Introduction: We used cognitive load theory to design the Queen's University Airway Mastery (QUMAC) pilot course to work toward reliable mastery of Emergency Airways Management elements in all participants.

Methods: We describe the process of designing QUMAC using 4-Component Instructional Design to harness the cognitive load theory as a learning tool. We evaluated the effectiveness of QUMAC using an outcome-based mixed-methods approach including Objective Structured Assessment of Technical Skills (OSATS) and 2 Objective Structured Clinical Examinations (OSCEs) at course completion using blinded expert video review.

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The adenosylcobalamin (AdoCbl)-dependent enzyme ethanolamine ammonia-lyase (EAL) catalyzes the conversion of ethanolamine to acetaldehyde and ammonia. As is the case for all AdoCbl-dependent isomerases, the catalytic cycle of EAL is initiated by homolytic cleavage of the cofactor's Co-C bond, producing Cocobalamin (CoCbl) and an adenosyl radical that serves to abstract a hydrogen atom from the substrate. Remarkably, in the presence of substrate, the rate of Co-C bond homolysis of enzyme-bound AdoCbl is increased by 12 orders of magnitude.

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Article Synopsis
  • Renal cell carcinoma (RCC) is linked to lifestyle factors like smoking, obesity, and hypertension, but about 3% of cases are hereditary, with seven major syndromes identified by NCCN that heighten RCC risk.* -
  • Inherited mutations in DNA repair genes, especially ATM, BRCA, and TP53, raise the risk for various cancers, and germline pathogenic mutations in ATM are surprisingly connected to RCC despite limited historical recognition.* -
  • A case study of a 68-year-old woman with a germline pathogenic ATM mutation who developed high-risk clear cell RCC highlights the need for better screening and research on targeted treatments in patients with hereditary cancer syndromes.*
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Accurate assessment and characterization of the progression and therapy response of prostate cancer are essential for precision healthcare of patients diagnosed with the disease. MRI is a clinical imaging modality routinely used for diagnostic imaging and treatment planning of prostate cancer. Extradomain B fibronectin (EDB-FN) is an oncofetal subtype of fibronectin highly expressed in the extracellular matrix of aggressive cancers, including prostate cancer.

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  • The study explores the use of targeted nanoparticles (RGD-ELNP) carrying miR-200c to modify the extracellular matrix (ECM) in pancreatic ductal adenocarcinoma (PDAC) and inhibit tumor growth.
  • In mouse models, the treatment significantly reduced ECM proteins associated with tumor progression and inhibited the ability of PDAC cells to form structures and migrate.
  • Non-invasive imaging techniques (MT218-MRMI) effectively tracked changes in tumor ECM and confirmed the therapeutic efficacy of RGD-ELNP/miR-200c, showing promise for improving PDAC treatment strategies.
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  • Surgical care in the operating room creates a lot of greenhouse gas emissions, making up a third of healthcare's total emissions.
  • A big study looked at many articles about how gastrointestinal surgery affects the environment to find ways to make it more sustainable.
  • The results showed that using less anesthetic gases and reducing surgical waste can significantly help lessen the impact on the environment, and having special teams to promote these changes is a good idea.
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  • Surgeons around the world are interested in making surgery more eco-friendly, so a group was formed to learn more about their thoughts on this topic.
  • They sent out a survey to understand how surgeons feel about being sustainable, how much they know about the carbon footprint of their surgeries, and what changes they are willing to make.
  • The results showed that most surgeons want to help the environment but don’t know much about how their practices affect it; they prefer learning through online resources.
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  • This study investigates how different levels of glycated hemoglobin (HbA1c) correlate with clotting factors in patients undergoing revascularization for peripheral artery disease.
  • It involved analyzing the thromboelastography results in patients with varying HbA1c levels before and after surgery over a six-month period.
  • Results showed that patients with HbA1c above 6.5 had significantly higher clot strength and fibrin formation both at baseline and post-surgery, suggesting elevated HbA1c may increase the risk of vascular complications.
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Background: Of the seventy million people who suffer from epilepsy, 40 percent of them become resistant to more than one antiepileptic medication and have a higher chance of death. While the classical definition of epilepsy was due to the imbalance between excitatory glutamatergic and inhibitory γ-aminobutyric acid (GABA)-ergic signalling, substantial evidence implicates muscarinic receptors in the regulation of neural excitability.

Summary: Cannabinoids have shown to reduce seizure activity and neuronal excitability in several epileptic models through the activation of muscarinic receptors with drugs which modulate their activity.

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  • The healthcare system has a big impact on the environment, especially operating rooms, which contribute a lot to carbon emissions.
  • Major organizations and governments are working together to make healthcare more sustainable and reduce its carbon footprint.
  • A new group called the Sustainability in Surgical Practice task force was formed to promote better practices and encourage actions that help both surgery and the environment.
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Background: Metabolic comorbidities such as diabetes and obesity are considered pro-inflammatory states which theoretically increase the risk of perioperative thrombotic events across many surgical disciplines. Currently, there is a paucity of objective metrics to determine such risk and ideal pharmacologic targets. Thromboelastography with Platelet Mapping (TEG-PM) provides a comprehensive profile of coagulation and may provide insight into clot dysregulation.

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Objective: Current gene therapy of inherited retinal diseases is achieved mainly by subretinal injection, which is invasive with severe adverse effects. Intravitreal injection is a minimally invasive alternative for gene therapy of inherited retinal diseases. This work explores the efficacy of intravitreal delivery of PEGylated ECO (a multifunctional pH-sensitive amphiphilic amino lipid) plasmid DNA (pGRK1-ABCA4-S/MAR) nanoparticles (PEG-ELNP) for gene therapy of Stargardt disease.

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Background: Antiplatelet therapy is used to prevent thrombosis in patients with peripheral artery disease (PAD) following revascularization. However, the current standard of care for these patients remains at the physician's discretion, varying from mono-antiplatelet therapy (MAPT) to dual-antiplatelet therapy (DAPT). Viscoelastic assays such as Thromboelastography with Platelet Mapping (TEG-PM) provide insight into individual coagulation profiles and measure real-time platelet function.

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Women with peripheral artery disease (PAD) have poorer limb salvage outcomes in spite of having lower risk factors for vascular disease than their male counterparts. Mono antiplatelet therapy with aspirin is the cornerstone of medical treatment for PAD to reduce the risk of arterial thrombosis, but platelets in women may have a variable response to this standard of care compared to men. Viscoelastic assays, such as thromboelastography with platelet mapping (TEG-PM), have been utilized to identify prothrombotic states and may provide insight into a patient's real-time coagulation profile and their response to specific antiplatelet medications.

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Objective: This systematic review aims to comprehensively assess the contemporary literature on platelet function testing (PFT) in individuals undergoing revascularization therapy for peripheral arterial disease (PAD). The goal is to identify whether PFT can aid in detecting antiplatelet resistance, predicting post-procedural thrombotic complications, and informing tailored treatment strategies.

Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a literature review was conducted using PubMed databases.

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Background: Despite recent approvals of lifesaving treatments for chronic lymphocytic leukemia (CLL), real-world data on the tolerability of the Bruton tyrosine kinase inhibitor ibrutinib for CLL treatment are lacking, especially in Black patients.

Objective: To expand upon a previously reported retrospective chart review of ibrutinib-treated patients with CLL to increase the number of sites and the enrollment period in first-line (1L) and relapsed/refractory (R/R) settings with a subanalysis based on ethnicity.

Patients And Methods: Adults with CLL who initiated ibrutinib treatment from five centers were followed for ≥ 6 months.

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Background: The role of thrombin in vascular pathology is a focus of investigation. The incorporation of direct Factor Xa inhibition into practice patterns is based on its theoretical dual-pathway attenuation of both thrombin generation and platelet aggregation. However, quantification of the effect of direct anti-Xa medications on platelet function is not established.

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Differentiation antagonizing noncoding RNA (DANCR) is recognized as an oncogenic long noncoding RNA (lncRNA) overexpressed in triple negative breast cancer (TNBC). We showed in a previous study that RNAi with targeted multifunctional ionizable lipid ECO/siRNA nanoparticles was effective to regulate this undruggable target for effective treatment of TNBC. In this study, we developed dual-targeted ECO/siDANCR nanoparticles by targeting a tumor extracellular matrix oncoprotein, extradomain B fibronectin (EDB-FN), and integrins overexpressed on cancer cells for enhanced delivery of siDANCR.

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Background: In academic surgery publications, self-reporting of conflicts of interest (COI) has often proved to be inaccurate. Here, we review the accuracy of COI disclosures for studies related to the use of robotic technology in cardiothoracic surgery and evaluate factors associated with increased discrepancies.

Methods: A literature search identified robotic surgery-related studies with at least 1 American author published between January 2015 and December 2020 from 3 major American cardiothoracic surgery journals (The Journal of Thoracic and Cardiovascular Surgery, The Annals of Thoracic Surgery, and Annals of Cardiothoracic Surgery).

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Background: Both clopidogrel and atorvastatin metabolism are rooted in hepatic cytochrome p450 activation. There are published reports of atorvastatin interfering with clopidogrel metabolism by inhibiting the activation of clopidogrel. This in turn would decrease the therapeutic effect of clopidogrel potentially resulting in an increase in thrombotic events in patients who are taking both medications.

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Background: This scoping review and analysis were designed to assess the amount of time spent delivering photobiomodulation (PBM) light therapy after dental extraction to improve postoperative pain and wound healing.

Types Of Studies Reviewed: The scoping review was performed according to the Cochrane Collaboration and Preferred Reporting Items for Systematic Reviews and Meta-Analyses criteria. Publications were specific for human randomized controlled clinical trials, PBM after dental extraction therapy, and related clinical outcomes.

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The Commander complex is required for endosomal recycling of diverse transmembrane cargos and is mutated in Ritscher-Schinzel syndrome. It comprises two sub-assemblies: Retriever composed of VPS35L, VPS26C, and VPS29; and the CCC complex which contains twelve subunits: COMMD1-COMMD10 and the coiled-coil domain-containing (CCDC) proteins CCDC22 and CCDC93. Combining X-ray crystallography, electron cryomicroscopy, and in silico predictions, we have assembled a complete structural model of Commander.

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Background: The emerging research in the literature continues to forecast a drastic and alarming increase in negative mental health and sleep health outcomes among populations, especially after the COVID-19 pandemic, which significantly influenced people's way of life. With mental health pharmaceutical interventions continuing to be stigmatized and inaccessible among populations, natural supplements provide an opportunity for intervention.

Objective: This study sought to conduct a systematic review of the literature on the most recent comprehensive evidence for which nutritional supplements have the greatest therapeutic impact on symptoms of anxiety, depression, and insomnia.

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