Publications by authors named "Clarkson A"

Purpose: We sought to evaluate outcomes for clinical management after a genetic diagnosis from the Deciphering Developmental Disorders study.

Methods: Individuals in the Deciphering Developmental Disorders study who had a pathogenic/likely pathogenic genotype in the DECIPHER database were selected for inclusion ( = 5010). Clinical notes from regional clinical genetics services notes were reviewed to assess predefined clinical outcomes relating to interventions, prenatal choices, and information provision.

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An acid-promoted dearomative rearrangement of -arylhydroxylamines affords 2-aminocyclohexadien-1-ones, which can in turn be reductively quenched for the synthesis of -aminoalcohols on a cyclohexadiene core. This method serves as an efficient entry to the pharmaceutically relevant 1-arylcyclohexylamine scaffold in two steps (one purification) from commercially available or readily prepared 2-arylphenols.

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Article Synopsis
  • Hypertension is a significant risk factor for both stroke and cognitive decline, but its specific impact on cognitive impairment after a stroke is still uncertain.
  • In a study with C57BL/6J mice, researchers induced hypertension and then conducted strokes to assess cognitive outcomes using the Barnes maze and analyzed the brain's transcriptomic profile through RNA sequencing.
  • Results indicated that hypertensive mice experienced worse cognitive performance and more brain injury compared to normotensive mice after a stroke, with over 1500 genes linked to neuroinflammation being differentially expressed.
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The availability of stability data for the use of continuous intravenous flucloxacillin in an elastomeric device has enabled the treatment of serious Methicillin Sensitive (MSSA) in the outpatient parenteral antimicrobial therapy (OPAT) setting. This service review aimed to evaluate current standard of care to establish the clinical effectiveness and complication rates associated with its use since its introduction at our institution. A retrospective review of clinical outcomes and adverse events/complications, was undertaken for all patients who received continuous infusion flucloxacillin for complicated MSSA infection between January 2019 and July 2022 via our OPAT service.

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Adolescent idiopathic scoliosis (AIS) is the most common form of scoliosis, in which spinal curvature develops in adolescence, and 90% of patients are female. Scoliosis is a debilitating disease that often requires bracing or surgery in severe cases. AIS affects 2%-5.

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Aims: Recently, there have been attempts to improve prognostication and therefore better guide treatment for patients with medullary thyroid carcinoma (MTC). In 2022, the International MTC Grading System (IMTCGS) was developed and validated using a multi-institutional cohort of 327 patients. The aim of the current study was to build upon the findings of the IMTCGS to develop and validate a prognostic nomogram to predict recurrence-free survival (RFS) in MTC.

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  • The global rise in aging populations is linked to a higher incidence of Alzheimer's disease (AD) and its socioeconomic impacts, driven largely by abnormal amyloid-β (Aβ) metabolism.
  • Current treatments focusing on Aβ removal have shown limited cognitive benefits, highlighting the complexity of AD's causes, which include a range of factors like tau accumulation, neuroinflammation, and vascular dysfunction.
  • To effectively treat AD, extensive research is needed on neurodegeneration mechanisms, identifying intervention targets, and developing combinatorial treatment strategies, with the overarching goal of reversing cognitive decline through the Alzheimer's Disease Neuroprotection Research Initiative.
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  • Aminoindanol-derived bis(oxazoline) ligands are important for metal-catalyzed reactions but are difficult to modify structurally.
  • Researchers developed a seven-step, large-scale synthesis of five bromine-functionalized inda(box) ligands with different substituents.
  • The ligands can be further modified using Pd-catalyzed reactions, allowing for the creation of twelve new inda(box) ligands, potentially leading to new asymmetric metal-catalyzed transformations.
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  • Tall cell papillary thyroid carcinoma (TC-PTC) is debated in terms of its independent prognostic value due to varying criteria and its link to other adverse features.
  • A study analyzed 487 PTCs and found that the percentage of tall cells significantly impacted disease-free survival (DFS), particularly showing worse outcomes with higher tall cell proportions.
  • The findings suggest that TC-PTC's clinical significance varies based on the context, being particularly crucial for tumors classified as low risk by American Thyroid Association guidelines.
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Control comparator selection is a critical trial design issue. Preclinical and clinical investigators who are doing trials of stroke recovery and rehabilitation interventions must carefully consider the appropriateness and relevance of their chosen control comparator as the benefit of an experimental intervention is established relative to a comparator. Establishing a strong rationale for a selected comparator improves the integrity of the trial and validity of its findings.

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Control comparator selection is a critical trial design issue. Preclinical and clinical investigators who are doing trials of stroke recovery and rehabilitation interventions must carefully consider the appropriateness and relevance of their chosen control comparator as the benefit of an experimental intervention is established relative to a comparator. Establishing a strong rationale for a selected comparator improves the integrity of the trial and validity of its findings.

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Diffuse sclerosing variant papillary thyroid carcinoma (DS-PTC) is characterized clinically by a predilection for children and young adults, bulky neck nodes, and pulmonary metastases. Previous studies have suggested infrequent BRAF mutation but common RET gene rearrangements. Using strict criteria, we studied 43 DS-PTCs (1.

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Unlabelled: This report contains recommendations from 1 of 7 domains of the International Donation and Transplantation Legislative and Policy Forum (the Forum). The purpose is to provide expert guidance on the structure and function of Organ and Tissue Donation and Transplantation (OTDT) systems. The intended audience is OTDT stakeholders working to establish or improve existing systems.

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Background: The United Kingdom (UK) was one of the first countries to pioneer heart transplantation from donation after circulatory death (DCD) donors. To facilitate equity of access to DCD hearts by all UK heart transplant centers and expand the retrieval zone nationwide, a Joint Innovation Fund (JIF) pilot was provided by NHS Blood and Transplant (NHSBT) and NHS England (NHSE). The activity and outcomes of this national DCD heart pilot program are reported.

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Excitotoxicity, a neuronal death process in neurological disorders such as stroke, is initiated by the overstimulation of ionotropic glutamate receptors. Although dysregulation of proteolytic signaling networks is critical for excitotoxicity, the identity of affected proteins and mechanisms by which they induce neuronal cell death remain unclear. To address this, we used quantitative N-terminomics to identify proteins modified by proteolysis in neurons undergoing excitotoxic cell death.

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Ca/calmodulin-dependent protein kinase II alpha (CaMKIIα) is a major contributor to physiological and pathological glutamate-mediated Ca signals, and its involvement in various critical cellular pathways demands specific pharmacological strategies. We recently presented γ-hydroxybutyrate (GHB) ligands as the first small molecules selectively targeting and stabilizing the CaMKIIα hub domain. Here, we report that the cyclic GHB analogue 3-hydroxycyclopent-1-enecarboxylic acid (HOCPCA), improves sensorimotor function after experimental stroke in mice when administered at a clinically relevant time and in combination with alteplase.

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Regeneration of neural tissue and recovery of lost functions following an accident or disease to the central nervous system remains a major challenge worldwide, with limited treatment options available. The main reason for the failure of conventional therapeutic techniques to regenerate neural tissue is the presence of blood-brain barrier separating nervous system from systemic circulation and the limited capacity of self-regeneration of the nervous system. Injectable hydrogels have shown great promise for neural tissue engineering given their suitability for minimally invasive in situ delivery and tunable mechanical and biological properties.

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Stroke remains a leading cause of adult disability with treatments limited to thrombolytic therapies that are severely limited by a narrow therapeutic window. The potential of hundreds of other therapeutic agents cannot be evaluated due to their poor ability to cross the blood-brain barrier. Recently, biopolymer hydrogels have shown promise at overcoming these obstacles via the delivering of therapeutic molecules (pharmacological, mRNA, stem cells, etc.

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Article Synopsis
  • Analyzing cognitive performance is crucial for assessing deficits in individuals who have suffered strokes or central nervous system injuries, and touchscreen testing has gained popularity for its reproducibility and reduced stress on animal subjects.
  • The chapter explains how to set up and conduct four specific touchscreen tasks with adult mice to evaluate various cognitive abilities, including memory and cognitive flexibility.
  • Additionally, it offers practical tips for researchers and highlights important considerations when using these touchscreen tests in CNS injury models to enhance understanding of brain function and improve treatment strategies.
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Papillary thyroid carcinomas (PTCs) are driven by a variety of molecular abnormalities including BRAF, RAS, ALK, RET, and NTRK alterations. PTCs driven by the BRAFV600E mutation, or tumours which demonstrate a similar gene expression profile to PTCs driven by this mutation, have been reported to demonstrate specific morphological features sometimes termed "BRAFV600E-like" atypia. BRAFV600E-like atypia is characterised by a well-developed papillary architecture, infiltrative growth, marked nuclear clearing, prominent intranuclear pseudoinclusions, abundant eosinophilic cytoplasm, and scattered psammoma bodies.

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In this review, we summarize recent work on the "green synthesis" of carbon nanoparticles (CNPs) and their application with a focus on biomedical applications. Recent developments in the green synthesis of carbon nanoparticles, from renewable precursors and their application for environmental, energy-storage and medicinal applications are discussed. CNPs, especially carbon nanotubes (CNTs), carbon quantum dots (CQDs) and graphene, have demonstrated utility as high-density energy storage media, environmental remediation materials and in biomedical applications.

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Ischemic stroke is a leading cause of death and disability worldwide. Methods to alleviate functional deficits after ischemic stroke focus on restoration of cerebral blood flow to the affected area. However, pharmacological or surgical methods such as thrombolysis and thrombectomy have a narrow effective window.

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Ca/calmodulin-dependent protein kinase II (CaMKII) is a major mediator of Ca-dependent signaling pathways in various cell types throughout the body. Its neuronal isoform CaMKIIα () centrally integrates physiological but also pathological glutamate signals directly downstream of glutamate receptors and has thus emerged as a target for ischemic stroke. Previous studies provided evidence for the involvement of CaMKII activity in ischemic cell death by showing that CaMKII inhibition affords substantial neuroprotection.

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Stroke therapy has largely focused on preventing damage and encouraging repair outside the ischemic core, as the core is considered irreparable. Recently, several studies have suggested endogenous responses within the core are important for limiting the spread of damage and enhancing recovery, but the role of blood flow and capillary pericytes in this process is unknown. Using the Rose Bengal photothrombotic model of stroke, we illustrate blood vessels are present in the ischemic core and peri-lesional regions 2 weeks post stroke in male mice.

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