Publications by authors named "Lawton C"

Background And Objective: Long-term (LT) androgen deprivation therapy (ADT) has been found to be beneficial to patients with high-risk prostate cancer (PCa). However, administration of LT-ADT to all patients with high-risk PCa may lead to overtreatment. Enhanced risk stratification using genomic classifiers (such as the recently developed prostate subtyping classifier [PSC]) might be useful.

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Translocations, a conservation tool used to conserve and restore dwindling species, are often associated with high failure rates. Inadequate long-term monitoring of both populations and their introduction sites beyond the initial years post-translocation creates a gap in our understanding of the factors that determine translocation success or failure, resulting in less informed projects in the future. This lack of long-term monitoring is partly caused by the absence of a well-defined framework by which the success of the translocation can be measured, leading to premature and sometimes inaccurate assessments of their outcome.

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Problem: Accommodations for injured and disabled surgical providers have to balance an individual's needs with measures that ensure sterility requirements, patient and provider safety. The highly specialized nature of the surgical environment poses challenges when implementing changes in the operating room and literature is limited on adaptive surgical hand preparation techniques necessary to maximize a disabled medical student's active participation in their surgical clerkship.

Intervention: This paper presents a detailed account of the development and implementation of an adaptive surgical hand preparation designed to address mobility needs, enabling a student's active participation and education in the surgical curriculum.

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Purpose: Changes in quantitative magnetic resonance imaging (qMRI) are frequently observed during chemotherapy or radiation therapy (RT). It is hypothesized that qMRI features are reflective of underlying tissue responses. It's unknown what underlying genomic characteristics underly qMRI changes.

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Importance: No prior trial has compared hypofractionated postprostatectomy radiotherapy (HYPORT) to conventionally fractionated postprostatectomy (COPORT) in patients primarily treated with prostatectomy.

Objective: To determine if HYPORT is noninferior to COPORT for patient-reported genitourinary (GU) and gastrointestinal (GI) symptoms at 2 years.

Design, Setting, And Participants: In this phase 3 randomized clinical trial, patients with a detectable prostate-specific antigen (PSA; ≥0.

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Adeno-associated virus (AAV) has shown great promise as a viral vector for gene therapy in clinical applications. The present work studied the effect of genome size on AAV production, purification, and thermostability by producing AAV2-GFP using suspension-adapted HEK293 cells via triple transfection using AAV plasmids containing the same GFP transgene with DNA stuffers for variable-size AAV genomes consisting of 1.9, 3.

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Background: Many individuals without coeliac disease or wheat allergy reduce their gluten intake because they believe that gluten causes their gastrointestinal symptoms. Symptoms could be affected by negative expectancy. Therefore, we aimed to investigate the effects of expectancy versus actual gluten intake on symptoms in people with non-coeliac gluten sensitivity (NCGS).

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Peak fertility commonly occurs during medical training, and delaying parenthood can complicate pregnancies. Trainee parental leave policies are varied and lack transparency. Research on the impacts of parenthood on trainee education is limited.

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Hepatitis C virus infection (HCV) is prevalent in prisons. Therefore, effective prison HCV services are critical for HCV elimination programmes. We aimed to evaluate the efficacy of a regional HCV prison testing and treatment programme.

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Article Synopsis
  • The study investigates whether biochemical recurrence (BCR) can predict overall survival (OS) in localized prostate cancer by analyzing patient data from 11 clinical trials focused on various treatment methods.* -
  • Results showed that while treatment methods like short-term androgen deprivation therapy (ADT) improved cancer outcomes, there was no significant treatment impact on OS when adjusting for BCR after 48 months.* -
  • The correlation between BCR-free survival and OS was moderate, with Kendall's tau values demonstrating a range between 0.59 and 0.69, indicating a potential relationship but underscoring the complexity of predicting overall survival based on BCR.*
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Article Synopsis
  • The study investigated the variability in contouring the prostate bed clinical target volume (CTV) on MRI among radiation oncologists, aiming to establish baseline interobserver variability (IOV) and create international consensus guidelines.
  • Sixteen oncologists analyzed three MRI scans, revealing significant differences in contouring before guidelines were developed, with notable variability in overlap, distance, and volume metrics.
  • After creating consensus guidelines, IOV improved, showing a decrease in maximum volume ratio and volume coefficient of variation, alongside an increase in the Dice similarity coefficient.
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Poly(ethylene terephthalate) (PET) is one of the world's most widely used polyester plastics. Due to its chemical stability, PET is extremely difficult to hydrolyze in a natural environment. Recent discoveries in new polyester hydrolases and breakthroughs in enzyme engineering strategies have inspired enormous research on biorecycling of PET.

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Background: Soft tissue complications after Achilles tendon repair has led to increased interest in less invasive techniques. Various limited open techniques have gained popularity as an alternative to open operative repair. The purpose of this study was to biomechanically compare an open Krackow and limited open repair for Achilles tendon rupture.

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Purpose: The changes in the recommended use of radiation therapy (RT) in the presence of expanding systemic cancer therapies and technological advances are poorly characterized. We sought to understand the recommended utilization of RT across a broad range of malignancies by examining National Comprehensive Cancer Network (NCCN) Guidelines.

Methods And Materials: We conducted a comprehensive review and categorization of RT recommendations, with their subsequent supporting evidence categories, in 3 versions of NCCN Guidelines, specifically years 2000, 2009, and 2019.

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A diverting loop ileostomy (DLI) is used to protect a distal gastrointestinal anastomosis at risk of leakage. While patients typically prefer early DLI closure, surgeons vary in opinion regarding optimal timing. This study evaluated whether the timing of DLI closure impacts outcomes.

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More than 200 million tons of plant oils and animal fats are produced annually worldwide from oil, crops, and the rendered animal fat industry. Triacylglycerol, an abundant energy-dense compound, is the major form of lipid in oils and fats. While oils or fats are very important raw materials and functional ingredients for food or related products, a significant portion is currently diverted to or recovered as waste.

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Purpose: There is considerable interest in very short (ultrahypofractionated) radiation therapy regimens to treat prostate cancer based on potential radiobiological advantages, patient convenience, and resource allocation benefits. Our objective is to demonstrate that detectable changes in health-related quality of life measured by the bowel and urinary domains of the Expanded Prostate Cancer Index Composite (EPIC-50) were not substantially worse than baseline scores.

Methods And Materials: NRG Oncology's RTOG 0938 is a nonblinded randomized phase 2 study of National Comprehensive Cancer Network low-risk prostate cancer in which each arm is compared with a historical control.

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Purpose: There are no agreed upon measures to comprehensively determine the quality of radiation oncology (RO) care delivered for prostate cancer. Consequently, it is difficult to assess the implementation of scientific advances and adherence to best practices in routine clinical practice. To address this need, the US Department of Veterans Affairs (VA) National Radiation Oncology Program established the VA Radiation Oncology Quality Surveillance (VA ROQS) Program to develop clinical quality measures to assess the quality of RO care delivered to Veterans with cancer.

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The Society for Cardiovascular Magnetic Resonance (SCMR) recommendations for training and competency of cardiovascular magnetic resonance (CMR) technologists document will define the knowledge, experiences and skills required for a technologist to be competent in CMR imaging. By providing a framework for CMR training and competency the overarching goal is to promote the performance of high-quality CMR and to foster the increased adoption of CMR into clinical care.

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Background: A substantial number of patients present with a suspected ACS and non-obstructive coronary arteries; sex differences in these patients are not well understood. This study aims to evaluate the impact of sex on clinical presentation and outcome in patients with suspected acute coronary syndrome (ACS) and non-obstructive coronary arteries with a final diagnosis confirmed by cardiovascular magnetic resonance imaging (CMR).

Methods: Consecutive patients with ACS and non-obstructive coronary arteries (n = 719) with an unclear cause from a single tertiary centre who were referred for CMR were included.

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Background: Anthracycline cardiotoxicity is a significant clinical challenge. Biomarkers to improve risk stratification and identify early cardiac injury are required.

Objectives: The purpose of this pilot study was to prospectively characterize anthracycline cardiotoxicity using cardiovascular magnetic resonance (CMR), echocardiography and MicroRNAs (MiRNAs), and identify baseline predictors of LVEF recovery.

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Objective: Survival following a traumatic cardiac arrest (TCA) remains poor despite research focused on specific management and guideline adaptation. Previous research has identified factors including age, arresting rhythm, injury severity and distance from hospital to be associated with prehospital TCA outcomes. The present study aimed to review the local incidence of TCA to inform local practice within a mature trauma system.

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