Publications by authors named "Barrett D"

Stemness-associated cell states are linked to chemotherapy resistance in AML. We uncovered a direct mechanistic link between expression of the stem cell transcription factor GATA2 and drug resistance. The GATA-binding protein 2 (GATA2) plays a central role in blood stem cell generation and maintenance.

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Isocitrate dehydrogenase wild-type glioblastoma (GBM) is characterised by a heterogeneous genetic landscape resulting from dynamic competition between tumour subclones to survive selective pressures. Improvements in metabolite identification and metabolome coverage have led to increased interest in clinically relevant applications of metabolomics. Here, we use liquid chromatography-mass spectrometry and gene expression microarray to profile integrated intratumour metabolic heterogeneity, as a direct functional readout of adaptive responses of subclones to the tumour microenvironment.

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Introduction: The aim of this study was to establish an international consensus statement on the indications for the addition of a patellofemoral joint arthroplasty (PFJA) in patients with a unicondylar knee arthroplasty (UKA) and symptomatic progression of patellofemoral compartment osteoarthritis.

Materials And Methods: A systematic review of the literature was conducted, and the results used to inform the development of a statement by an expert working group. This was then evaluated and modified, using a Delphi process, by members of the European Knee Society (EKS).

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African Americans (AAs) with end-stage kidney disease (ESKD) experience significant barriers to accessing living donor kidney transplantation (LDKT), largely due to individual and systemic factors, including a lack of trust in healthcare systems resulting from a legacy of and continued experiences with medical racism. This cross-sectional study analyzed survey data from 416 AA patients with ESKD undergoing transplant evaluation in 2019-2023 at two kidney transplant centers in the Southeast United States, examining whether trust (specifically trust in kidney doctors, hospitals, and healthcare) modifies the relationship between attitudes towards LDKT and behavioral intentions to discuss LDKT with family and friends. Multivariable analyses revealed significant interactions.

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Purpose: Functional septorhinoplasty is an effective treatment for nasal airway obstruction. Little distinction exists between bilaterally and unilaterally obstructed patients in literature. Our study evaluates outcomes in patients with unilateral nasal airway obstruction compared to those with bilateral nasal airway obstruction as measured by nasal obstruction symptom evaluation scores following functional septorhinoplasty.

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Introduction: Eliminating racial inequities in access to kidney transplantation requires multilevel interventions that target both patients and health systems.

Research Question: The aim of this study was to determine whether adding culturally sensitive, web-based patient education to a transplant center-level intervention was associated with increased knowledge, motivation to pursue living donor kidney transplant, and confidence in the behavioral skills to discuss living donation among Black/African American patients with end-stage kidney disease.

Design: A total of 411 transplant candidates were randomized to intervention (N = 222) or control groups (N = 189) and completed measures at baseline and immediate follow-up during the transplant evaluation visit.

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  • Total Knee Arthroplasty (TKA) aims to align the femoral component properly with respect to the femoral cortex, but there is a lack of focus on restoring the native trochlear groove height (TGH), which this study seeks to investigate.
  • The study measured TGH in 110 normal subjects, finding it varied from the anterior femoral cortex by an average of 2.32 mm, indicating potential misalignment in TKA procedures.
  • Results suggest that approximately 24.5% of patients could be over- or understuffed by more than 2 mm when a standard trochlear depth is used, highlighting the need for surgical approaches that consider TGH to improve TKA outcomes.
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  • - The study aimed to evaluate how recreating the anterior space of the trochlea during total knee arthroplasty affects trochlea depth at both mid and deep flexion angles.
  • - Out of 122 patients, all had a balanced trochlea in full extension; however, more than 40% experienced overstuffing or understuffing issues in mid (32% understuffed) and deep (20.5% overstuffed) flexion.
  • - Significant differences were found in external rotation of the trochlea components between balanced and unbalanced groups at mid flexion, but not in deep flexion or other measures.
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Introduction: Previously, we showed that omega-3 polyunsaturated fatty acid n-3 (PUFA) supplementation improved the performance of postpartum rats in the shuttle box escape test (SBET).

Methods: The brains of these rats were used in the current study which examined brain cytochrome c oxidase (CCO) activity in white matter bundles and 39 regions spanning sensorimotor, limbic, and cognitive areas to determine the effects of n-3 PUFAs on neural metabolic capacity and network interactions.

Results: We found that n-3 PUFA supplementation decreased CCO activity in white matter bundles, deep and superficial areas within the inferior colliculus, the anterior and barrel field regions of the primary somatic sensorimotor cortex, the secondary somatic sensorimotor cortex, the lateral, anterior regions of the secondary visual cortex and the ventral posterior nucleus of the thalamus, and the medial nucleus of the amygdala.

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Study Design: Single-institution retrospective financial analysis.

Objective: Trauma care is consistently linked to inadequate reimbursement, posing a significant financial burden for large trauma centers. Data show that declining Medicare reimbursement rates have indirectly led to declining payment for all procedures covered by insurance.

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Automated radiology report generation has the potential to improve patient care and reduce the workload of radiologists. However, the path toward real-world adoption has been stymied by the challenge of evaluating the clinical quality of artificial intelligence (AI)-generated reports. We build a state-of-the-art report generation system for chest radiographs, called Flamingo-CXR, and perform an expert evaluation of AI-generated reports by engaging a panel of board-certified radiologists.

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A plausible, but largely unexplored reason for many weed biocontrol agents failing to establish or being ineffective, could involve abiotically induced changes to an invasive plants' biochemical phenotype and consequent enhanced herbivore resistance. Considerable literature demonstrates that chemically altered plant phenotypes can impair insect life history performance. Heather beetle, (Lochmaea suturalis), introduced to control invasive heather (Calluna vulgaris) in New Zealand (NZ) was difficult to establish and displays variable effectiveness.

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  • Cordycepin, a compound being studied for cancer therapy, has various proposed mechanisms of action, but recent research suggests its active form is cordycepin triphosphate which inhibits gene expression triggered by growth factors.
  • The compound was found to block critical cell signaling pathways (PI3K/AKT/mTOR and MEK/ERK) in multiple cell lines, without needing to activate AMPK.
  • The action of cordycepin on the mTOR pathway occurs rapidly, within just 30 minutes, indicating a universal effect on growth factor signaling through a currently unidentified target molecule.
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Purpose: This work developed a novel preclinical test of total knee replacements (TKRs) in order to explain TKR instability linked to patient dissatisfaction. It was hypothesized that stability tests on the isolated moving prostheses would provide novel comparative data on the stability and kinematics among TKR designs.

Methods: Three TKR designs, DePuy Synthes Attune MS, Stryker Triathlon and Zimmer Biomet Persona MC, were assessed using a robotic arm while flexing-extending 0-140°.

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  • - Climate change is causing a decrease in winter ice cover on lakes, which has a variety of negative effects on society and the environment that are not yet fully understood.
  • - The reduction in ice leads to safety issues, changes in fisheries, increased erosion, and threatens water quality and biodiversity.
  • - To address these challenges, it's important to study these changes more closely and promote collaboration across different fields for better lake management and sustainability.
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Introduction: Knee osteoarthritis is a prevalent condition frequently necessitating knee replacement surgery, with demand projected to rise substantially. Partial knee arthroplasty (PKA) offers advantages over total knee arthroplasty (TKA), yet its utilisation remains low despite guidance recommending consideration alongside TKA in shared decision making. Radiographic decision aids exist but are underutilised due to clinician time constraints.

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Identifying associations between phenotype and genotype is the fundamental basis of genetic analyses. Inspired by frequentist probability and the work of R. A.

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Interleukin-6 (IL-6) is a pro-inflammatory cytokine elevated in cytokine storm syndromes, including hemophagocytic lymphohistiocytosis (HLH) and macrophage activation syndrome (MAS). It is also elevated in cytokine release syndrome (CRS) after immune activating cancer therapies such as chimeric antigen receptor (CAR) T-cells or bispecific T-cell engagers (BITEs) and in some patients after infection with SARS-CoV-2. The interaction of IL-6 with its receptor complex can happen in several forms, making effectively blocking this cytokine's effects clinically challenging.

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  • * Laboratory tests confirmed the presence of a low-pathogenicity avian influenza virus (LPAIV) subtype H6N1, affecting 15 premises in Northern Ireland and spreading to 13 in the Republic of Ireland and six in Great Britain.
  • * The outbreak resulted in the culling of over 2 million birds to control the spread, highlighting the significant economic consequences and the need for swift action during LPAIV outbreaks.
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Bovine tuberculosis (bTB) continues to have significant economic and veterinary health impacts on cattle herds where the disease remains endemic. The continual tailoring of policies to address such maintenance requires an in-depth analysis of national data, underpinning new control strategies. In Ireland, when outbreaks occur, ancillary testing of herd mates deemed to be at the highest risk of exposure to reactors is undertaken using the interferon gamma (GIF) test.

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  • Many patients treated with FDA-approved CAR T cells see their disease progress, especially with solid cancers and certain types of blood cancers like T cell lymphomas.
  • A major challenge in adoptive T cell therapies is the dysfunction of CAR T cells, which struggle to expand and last after being infused.
  • The study reveals that knocking out the CD5 gene using CRISPR-Cas9 can improve the antitumor abilities of CAR T cells by enhancing their function and persistence, suggesting CD5 as a key target for improving T cell therapies.
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