39,962 results match your criteria: "Johnston; and the Alberta Bone and Joint Health Institute[Affiliation]"

Sepsis subtypes and differential treatment response to vitamin C: biological sub-study of the LOVIT trial.

Intensive Care Med

January 2025

Centre for Inflammation Research, Institute For Regeneration and Repair, University of Edinburgh, Edinburgh, Scotland, UK.

Purpose: We hypothesised that the biological heterogeneity of sepsis may highlight sepsis subtypes with differences in response to intravenous vitamin C treatment in the Lessening Organ Dysfunction with VITamin C (LOVIT) trial. Our aims were to identify sepsis subtypes and to test whether sepsis subtypes have differences in treatment effect to vitamin C and describe putative biological effects of vitamin C treatment.

Methods: We measured biomarkers of inflammation, at baseline and at 7 days post-randomisation, in 457/863 (53.

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Prefrontal cortex neuronal ensembles dynamically encode task features during associative memory and virtual navigation.

Cell Rep

January 2025

Western Institute for Neuroscience, Western University, London, ON, Canada; Department of Clinical Neurological Sciences, London Health Sciences Centre, Western University, London, ON, Canada; Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada. Electronic address:

Neuronal populations expand their information-encoding capacity using mixed selective neurons. This is particularly prominent in association areas such as the lateral prefrontal cortex (LPFC), which integrate information from multiple sensory systems. However, during conditions that approximate natural behaviors, it is unclear how LPFC neuronal ensembles process space- and time-varying information about task features.

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Single-cell and spatial transcriptomics technologies have significantly advanced our understanding of the molecular mechanisms underlying crop biology. This review presents an update on the application of these technologies in crop improvement. The heterogeneity of different cell populations within a tissue plays a crucial role in the coordinated response of an organism to its environment.

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The continual evolution of SARS-CoV-2 has significantly influenced the global response to the COVID-19 pandemic, with the emergence of highly transmissible and immune-evasive variants posing persistent challenges. The Omicron variant, first identified in November 2021, rapidly replaced the Delta variant, becoming the predominant strain worldwide. In Florida, Omicron was first detected in December 2021, leading to an unprecedented surge in cases that surpassed all prior waves, despite extensive vaccination efforts.

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and are two species belonging to the Plusiinae subfamily within the Noctuidae family. Due to their morphological similarity, the identification of their larvae is difficult and time-consuming. A rapid and accurate identification of these two species is essential for their management as these species exhibit differential susceptibilities to insecticides and crops engineered to express () proteins, and a molecular tool can easily provide this differentiation.

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Introduction: Given the challenges in diagnosing children with long COVID, we sought to explore diagnostic practices and preferences among clinicians.

Methods: A ten-question survey assessed pediatric providers' clinical decision making for identifying and evaluating long COVID in children. Of the 120 survey respondents, 84 (70%) were physicians, 31 (26%) nurse practitioners, and 5 (4%) physician assistants.

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It is now possible to generate large volumes of high-quality images of biomolecules at near-atomic resolution and in near-native states using cryogenic electron microscopy/electron tomography (Cryo-EM/ET). However, the precise annotation of structures like filaments and membranes remains a major barrier towards applying these methods in high-throughput. To address this, we present TARDIS (ransformer-bsed apid imensionless nstance egmentation), a machine-learning framework for fast and accurate annotation of micrographs and tomograms.

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The production of fine particles by green technology like supercritical carbon dioxide requires the assessment of substantial solubility data at high pressures. This study represents the first determination of the solubility of methyldopa in carbon dioxide at pressures and temperatures ranging from 12 to 30 MPa and from 313.2 to 343.

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C1q/TNF-related protein 14 (CTRP14), also known as C1q-like 1 (C1QL1), is a synaptic protein predominantly expressed in the brain. It plays a critical role in the formation and maintenance of the climbing fiber-Purkinje cell synapses, ensuring that only one single winning climbing fiber from the inferior olivary neuron synapses with the proximal dendrites of Purkinje cells during the early postnatal period. Loss of CTRP14/C1QL1 results in incomplete elimination of supernumerary climbing fibers, leading to multiple persistent climbing fibers synapsing with the Purkinje cells.

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(Black Cumin) Oil: A Case Report and Analysis Exploring Severe Cutaneous Manifestations and Implications for Patient Care.

J Clin Aesthet Dermatol

December 2024

Drs. Johnston and Shangraw are with Frontier Dermatology in Salem, Oregon.

In the past three decades, there has been a remarkable surge in the popularity and use of herbal medicines. However, despite their widespread use, herbal remedies remain inadequately regulated, exposing consumers to potential adverse effects. This case series examines eight patients with severe cutaneous manifestations resulting from the topical application of (black cumin) oil, emphasizing the critical significance of patch testing, thorough history-taking regarding exposures and herbal supplement usage, and the necessity for enhanced regulatory measures.

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Background & Aims: Crohn's perianal fistula healing rates remain low. We evaluated the efficacy of a protocolised multidisciplinary treatment strategy optimising care in adults with Crohn's perianal fistulas.

Methods: A new treatment strategy was established at a single tertiary centre.

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Purpose: Workers' compensation claims can negatively affect the wellbeing of injured workers. For some, these negative effects continue beyond finalisation of the workers' compensation claim. It is unclear what factors influence wellbeing following finalisation of a workers' compensation claim.

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The rational design of engineered nanomaterials (NMs) with improved functionality and their increasing industrial application requires reliable, validated, and ultimately standardized characterization methods for their application-relevant, physicochemical key properties such as size, size distribution, shape, or surface chemistry. This calls for nanoscale (certified) reference materials (CRMs; RMs) and well-characterized reference test materials (RTMs) termed also quality control (QC) samples, assessed, e.g.

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Rurality predisposes departure from gold-standard care, leading to delayed or accelerated access to surgery: insights from a scoping review.

Can J Surg

January 2025

From the Cumming School of Medicine, University of Calgary, Calgary, Alta. (Ebrahim, Sinha, Adedipe, Ahmad, Amyotte, Yang); the Canadian Global Surgery Trainees' Association affiliated with the International Student Surgical Network - InciSioN (Ebrahim, Sinha, Adedipe, Ahmad, Amyotte, Yang, Elsewify); the Faculty of Medicine and Health Sciences, Laval University, Québec City, Que. (Elsewify); the Division of Plastic and Reconstructive Surgery, University of Western Ontario, London, Ont. (Sachal); the Sections of Pediatric Surgery and Plastic Surgery, Department of Surgery, University of Calgary, Calgary, Alta. (Fraulin); the Departments of Clinical Neurosciences and Surgery, University of Calgary, Calgary, Alta. (Gabriel); the Department of Distributed Learning and Rural Initiatives, Cumming School of Medicine, University of Calgary, Calgary, Alta. (Perez, Johnston)

Background: Because tertiary centres are generally situated at urban sites, it is unclear whether patients in rural areas have the same access to surgical services that patients in urban areas do. We sought to map the North American evidence landscape of how rurality affects access to medically indicated surgeries and identify system-, patient-, and provider-level barriers that preclude urban-comparable care.

Methods: We carried out a systematic search adhering to PRISMA for Scoping Reviews methodology across PubMed, MEDLINE, Scopus, and Web of Science, encompassing literature from the last 26 years (January 2023).

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The Effect of Vaccination on the Competitive Advantage of Two Strains of an Infectious Disease.

Bull Math Biol

January 2025

Department of Mathematics and Computer Science, Lawrence Technological University, 21000 W. 10 Mile Rd., Southfield, MI, 48075, USA.

We investigate the impact of differential vaccine effectiveness, waning immunity, and natural cross-immunity on the capacity for vaccine-induced strain replacement in two-strain models of infectious disease spread. We focus specifically on the case where the first strain is more transmissible but the second strain is more immune-resistant. We consider two cases on vaccine-induced immunity: (1) a monovalent model where the second strain has immune escape with respect to vaccination; and (2) a bivalent model where the vaccine remains equally effective against both strains.

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Pan-cancer drivers of metastasis.

Mol Cancer

January 2025

Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queens University Belfast, Belfast, BT9 7BL, UK.

Metastasis remains a leading cause of cancer-related mortality, irrespective of the primary tumour origin. However, the core gene regulatory program governing distinct stages of metastasis across cancers remains poorly understood. We investigate this through single-cell transcriptome analysis encompassing over two hundred patients with metastatic and non-metastatic tumours across six cancer types.

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Background: Multimorbidity, the co-existence of two or more conditions within an individual at any one time, is globally increasing and forecasted to rise. This poses a significant challenge for current models of healthcare delivery, which are now ill-equipped to meet the future population health needs. Interprofessional collaborative practice is a specific way professionals work closely together and with patients and their families to improve patient outcomes.

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Optimization and calibration of 384-well kinetic Ca mobilization assays for the human transient receptor potential cation channels TRPM8, TRPV1, and TRPA1.

SLAS Discov

December 2024

Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261, USA; University of Pittsburgh Hillman Cancer Center, Pittsburgh, PA 15232, USA. Electronic address:

Development, optimization, and calibration of human transient receptor potential (TRP) channel Ca mobilization assays for TRPM8, TRPV1, and TRPA1 are described. Heterologous expression of hTRPM8 in HEK293T cells was required for anti-TRPM8 antibody staining and TRPM8 agonist induced Ca mobilization signals which were both used to optimize transfection efficiency. FLIPR Calcium 6 dye concentration, loading time, and TRPM8 transfected cell seeding density were optimized and a DMSO tolerance of ≤0.

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Well-being After Finalization of a Workers' Compensation Claim: A Cross-Sectional Survey.

J Occup Environ Med

January 2025

John Curtin Institute of Public Policy, Curtin University, Perth, Western Australia, Australia.

Objective: Injured workers can be disadvantaged after a workers' compensation claims ends. This study investigated the association of a range of variables with well-being in injured workers who had finalized a workers' compensation claim >3 months prior.

Methods: On-line, cross-sectional survey (n = 129, 55.

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IPEM topical report: guidance on 3D printing in radiotherapy.

Phys Med Biol

January 2025

Department of Physics, UCLH NHS Foundation Trust, 250 Euston Road,, London, NW1 2PG, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND.

There has been an increase in the availability and utilization of commercially available 3D printers in radiotherapy, with applications in phantoms, brachytherapy applicators, bolus, compensators, and immobilization devices. Additive manufacturing in the form of 3D printing has the advantage of rapid production of personalized patient specific prints or customized phantoms within a short timeframe. One of the barriers to uptake has been the lack of guidance.

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Pancreatic ductal adenocarcinoma (PDAC) remains one of the deadliest solid cancers; thus, identifying more effective therapies is a major unmet need. In this study, we characterized the super enhancer (SE) landscape of human PDAC to identify drivers of the disease that might be targetable. This analysis revealed MICAL2 as a super enhancer-associated gene in human PDAC, which encodes the flavin monooxygenase MICAL2 that induces actin depolymerization and indirectly promotes SRF transcription by modulating the availability of serum response factor coactivators myocardin-related transcription factors (MRTF-A and MRTF-B).

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Purpose: Terbium-149 is a short-lived α-particle emitter, potentially useful for tumor-targeted therapy. The aim of this study was to investigate terbium-149 in combination with the somatostatin receptor (SSTR) agonist DOTATATE and the SSTR antagonist DOTA-LM3. The radiopeptides were evaluated to compare their therapeutic efficacy in vitro and in vivo.

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