Publications by authors named "Sawyer M"

Background: Nivolumab-based therapies are efficacious with acceptable safety in patients with gastric cancer (GC) and gastroesophageal junction cancer (GEJC). Novel nivolumab-based combination immunotherapies may offer enhanced efficacy in these indications. FRACTION-GC was a signal-seeking, randomized, open-label, phase II adaptive-design trial assessing efficacy and safety of nivolumab in combination with ipilimumab [cytotoxic T lymphocyte antigen-4 (CTLA-4) antibody], relatlimab (lymphocyte-activation gene 3 antibody), or IDO1i (BMS986205, an indoleamine-2,3-dioxygenase-1 inhibitor) in patients with unresectable, advanced/metastatic GC/GEJC.

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Osteoarthritis, a major global cause of pain and disability, is driven by the irreversible degradation of hyaline cartilage in joints. Cartilage tissue engineering presents a promising therapeutic avenue, but success hinges on replicating the native physiological environment to guide cellular behavior and generate tissue constructs that mimic natural cartilage. Although electrical stimulation has been shown to enhance chondrogenesis and extracellular matrix production in 2D cultures, the mechanisms underlying these effects remain poorly understood, particularly in 3D models.

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The ability of the Veterans Health Administration System to care for veterans with bladder cancer is influenced by the increased complexity of both veterans and the system's capacity to do so, which is determined by personnel and equipment allocation. Herein, we review the guidelines for bladder cancer management in the context of this population and highlight unique veteran characteristics that impact the delivery of bladder cancer care within the Veterans Health Administration System. There are opportunities for standardization and implementation, which can improve the quality of this care, and we summarize the questions for which coordinated research efforts may provide answers.

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Aims: Healthcare accounts for 5% of global greenhouse gas emissions, with medicines making a sizeable contribution. Product-level medicine emission data is limited, hindering mitigation efforts. To address this, we created Medicine Carbon Footprint (MCF) Classifier, to estimate, standardize, stratify and visualize medicine carbon footprints.

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Background: Adrenal vein sampling (AVS), integral to identifying surgically remediable unilateral primary aldosteronism (PA), is technically challenging and subject to fluctuations in cortisol and aldosterone secretion. Intra-procedural adrenocorticotropic hormone (ACTH), conventionally administered as a 250-μg bolus and/or 50 μg per hour infusion, increases cortisol and aldosterone secretion and can improve AVS success, but may cause discordant lateralisation compared to unstimulated AVS.

Aims: To assess if AVS performed with ultra-low dose ACTH infusion causes discordant lateralisation.

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Background: Parents exposed to psychosocial adversities often experience challenges which, combined with the needs of a new-born infant, can be difficult to manage and increase the risk of poor outcomes for both parents and infants. Psychosocial adversity can disrupt the development of parental-foetal attachment to the baby during pregnancy, which can have a negative effect on parental care and quality of interaction during the postnatal period. This intervention is based on the proposition that enhanced parental capacity to mentalise and emotionally connect to unborn children during pregnancy, and better understanding about how to manage distressing infant behaviour (i.

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Background & Aims: Exocrine pancreatic insufficiency (EPI) contributes to malnutrition, marked by muscle loss during chemotherapy for advanced pancreatic cancer (aPC). Pancreatic enzyme replacement therapy (PERT) is recommended for patients with EPI; however, it's efficacy for attenuating muscle loss has not been demonstrated. We aimed to delineate the impact of PERT dose on muscle loss using a 7-year population-based cohort with aPC who were provided PERT at the discretion of their oncologist or dietitian according to clinical indications of EPI.

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Background: Low muscle mass (MM) predicts unfavorable outcomes in cancer. Protein intake supports muscle health, but oncologic recommendations are not well characterized. The objectives of this study were to evaluate the feasibility of dietary change to attain 1.

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Article Synopsis
  • This qualitative study examined the impact of the Protein Recommendations to Increase Muscle (PRIMe) trial on cancer patients' relationships with food, specifically focusing on their nutritional challenges and experiences during the trial.
  • Data was collected from 26 patients with stage II-IV colorectal cancer through semi-structured interviews, revealing five key themes that illustrate how their perspectives on nutrition changed and what factors affected their dietary adherence.
  • The study highlights the emotional and psychological effects of dietary interventions, noting that patients developed new positive attitudes towards nutrition and faced both facilitators and barriers in maintaining dietary changes that promote protein intake.
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Background And Aims: Measurement of body composition using computed tomography (CT) scans may be a viable clinical tool for low muscle mass assessment in oncology. However, longitudinal assessments are often infeasible with CT. Clinically accessible body composition technologies can be used to track changes in fat-free mass (FFM) or muscle, though their accuracy may be impacted by cancer-related physiological changes.

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  • The study examines how to best measure the general factor of psychopathology using various statistical models on data from youth ratings in 24 societies.
  • Four models were tested: principal axis, hierarchical factor, bifactor, and a simple Total Problem score, analyzing data from over 25,000 youth ages 11-18.
  • Findings show that all models yielded similar results, suggesting that the simplest approach (the Total Problem score) is recommended for evaluating youth psychopathology in both clinical and research settings.
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  • - The KEYNOTE-651 study assessed the combination of pembrolizumab and binimetinib, with or without chemotherapy, in patients with metastatic colorectal cancer that was microsatellite stable/mismatch repair-proficient.
  • - Cohorts showed varying levels of dose-limiting toxicities (DLTs), with the most significant occurring in cohort C at 33%, leading to a halt in dose escalation for that group and a dose reduction in cohort E.
  • - Overall, the study found binimetinib combined with pembrolizumab was tolerable in cohort A, but the objective response rates were low across all cohorts, with no significant additional benefit from adding binimetinib to pembrolizumab.
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Objectives: Lung metastases in adenoid cystic carcinoma (ACC) usually have indolent growth and the optimal timing to start systemic therapy is not established. We assessed ACC lung metastasis tumor growth dynamics and compared the prognostic value of time to progression (TTP) and tumor volume doubling time (TVDT).

Methods: The study included ACC patients with ≥1 pulmonary metastasis (≥5 mm) and at least 2 chest computed tomography scans.

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Aerosol jet printing (AJP) is an advanced manufacturing technique for directly writing nanoparticle inks onto target substrates. It is an emerging reliable, efficient, and environmentally friendly fabrication route for thin film electronics and advanced semiconductor packaging. This fabrication technique is highly regarded for its rapid prototyping, the flexibility of design, and fine feature resolution.

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  • Preoperative broad-spectrum antibiotics are commonly used to prevent surgical site infections after appendectomy but raise concerns about antibiotic resistance.
  • A quality improvement project aimed to reduce the use of piperacillin-tazobactam in treating uncomplicated acute appendicitis while maintaining infection rates through updated electronic orders and education for clinicians.
  • The project successfully reduced the administration of piperacillin-tazobactam from 51.4% to 20.1% without increasing the rates of surgical site infections, indicating that narrow-spectrum antibiotics can be effectively utilized.
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Introduction: A 70-year-old male with prior total colectomy for ulcerative colitis was referred for elevated prostate specific antigen (PSA) (8.01) with PIRADS 4 lesion on magnetic resonance imaging (MRI). Described is a novel technique using pre-operative multi-parametric prostate MRI and intraoperative computed tomography (CT) 3D/3D fusion for systematic and targeted prostate biopsy in a patient lacking a rectum.

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This paper offers an analysis of the macroeconomic conditions for near zero economic growth based on a demand-led growth model, and their implications in terms of paid employment, government finances, and the rate of profit. The main finding of the paper is that a level of net investment compatible with near zero growth would lead to a lower level of paid employment in terms of total hours worked. The effects on the distribution of work and the unemployment level would depend on changes to working time, whether in terms of average hours worked per annum, ages of entry into, and exit from, the work force.

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Objective: To understand whether self-sampling can reduce carbon emissions (CO e) from the NHS cervical screening programme (NHSCSP) by comparing the carbon footprint of three sampling strategies: routine cervical sampling, vaginal self-sampling and first-void (FV) urine collection.

Design: Descriptive study.

Setting: National Health Service (NHS), United Kingdom (UK).

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Despite increasing interest in reducing radiation doses during endoscopic stone surgery, there is conflicting evidence as to whether percutaneous nephrolithotomy (PCNL) positioning (prone or supine) impacts radiation. We observed clinically that a patient placed prone on gel rolls had higher than expected radiation with intraoperative CT imaging and that gel rolls were visible on the coaxial imaging. We hypothesized that gel rolls directly increase radiation doses.

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Muscle and adipose wasting during chemotherapy for advanced pancreatic cancer (aPC) are associated with poor outcomes. We aimed to quantify the contributions of chemotherapy regimen and tumour progression to muscle and adipose wasting and evaluate the prognostic value of each tissue loss. Of all patients treated for aPC from 2013-2019 in Alberta, Canada ( = 504), computed-tomography (CT)-defined muscle and adipose tissue index changes (∆SMI, ∆ATI, cm/m) were measured for patients with CT images available both prior to and 12 ± 4 weeks after chemotherapy initiation ( = 210).

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Three-dimensional (3D) tissue engineering (TE) is a prospective treatment that can be used to restore or replace damaged musculoskeletal tissues, such as articular cartilage. However, current challenges in TE include identifying materials that are biocompatible and have properties that closely match the mechanical properties and cellular microenvironment of the target tissue. Visualization and analysis of potential 3D porous scaffolds as well as the associated cell growth and proliferation characteristics present additional problems.

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Background: Total energy expenditure (TEE) determines energy requirements, but objective data in patients with cancer are limited.

Objectives: We aimed to characterize TEE, investigate its predictors, and compare TEE with cancer-specific predicted energy requirements.

Methods: This cross-sectional analysis included patients with stages II-IV colorectal cancer from the Protein Recommendation to Increase Muscle (PRIMe) trial.

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Article Synopsis
  • The study highlights the growing importance of small specialty crop farms (SSCF) in the U.S. due to increased consumer interest in local produce.
  • Researchers analyzed genomic diversity from bacteria isolated from dairy manure across 10 SSCFs in Northeast Ohio, identifying various sequence types and gene patterns indicating potential transmission between farms.
  • Findings revealed that certain isolates carried genes that enhanced resistance to environmental stresses and antimicrobials, suggesting a complex interplay between bacteria and farm management practices over time.
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Three-dimensional (3D) tissue engineering (TE) is a prospective treatment that can be used to restore or replace damaged musculoskeletal tissues such as articular cartilage. However, current challenges in TE include identifying materials that are biocompatible and have properties that closely match the mechanical properties and cellular environment of the target tissue, while allowing for 3D tomography of porous scaffolds as well as their cell growth and proliferation characterization. This is particularly challenging for opaque scaffolds.

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