Publications by authors named "Sydney Edwards"

Background: End-of-life care among surgical patients is largely understudied and far fewer studies examine such care from the family perspective. To identify potential opportunities for improvement, we explored responses of family members of veterans who died following surgery using the Veterans Affairs (VAs) Bereaved Family Survey (BFS).

Methods: We examined data from the BFS open-text responses to explore insights into surgical patient's end-of-life care.

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Background Pulmonary thrombosis and thromboembolism play a significant role in the physiologic derangements seen in COVID-19 acute respiratory failure. The effect of thrombolysis with tenecteplase on patient outcomes is unknown. Methods We conducted a randomized, controlled, double-blind, phase II trial comparing tenecteplase versus placebo in patients with COVID-19 acute respiratory failure (NCT04505592).

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Background: Using open-text responses from the Bereaved Family Survey (BFS), we sought to explore Veteran family experiences on end-of-life care after surgery.

Methods: We evaluated 936 open-text responses for all decedents who underwent any high-risk surgical procedure across 124 Veterans Affairs facilities between 2010 and 2019. Data were analyzed using thematic analysis.

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Objective: The aim of this study was to retrospectively evaluate vision outcomes of dogs with primary angle closure glaucoma (PACG) that underwent Ahmed valve gonioimplantation (AVG) followed by lensectomy and endolaser cyclophotocoagulation (ECP) with or without bleb resection after AVG failure.

Procedure: Medical records from 2008 to April 2022 were reviewed. All patients selected had an AVG performed first.

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Blue copper proteins are models for illustrating how proteins tune metal properties. Nevertheless, the mechanisms by which the protein controls the metal site remain to be fully elucidated. A hindrance is that the closed shell Cu(I) site is inaccessible to most spectroscopic analyses.

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Background: The operating room (OR) is a complex environment for medical students. Little is known about the OR staff's perception of medical students.

Methods: We utilized an embedded mixed methods design to characterize surgical staff perceptions of students at an academic institution.

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Objective: Patient-reported outcomes (PRO) have been increasingly emphasized for peripheral artery disease (PAD). Patient-defined treatment goals and expectations, however, are poorly understood and might not be achievable or aligned with guidelines or clinical outcomes. We evaluated the patient-reported treatment goals among patients with claudication and the associations between patient characteristics, goals, and PAD-specific PRO scores.

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Citrullination, the post-translational modification of arginine residues, is catalyzed by the four catalytically active peptidylarginine deiminase (PAD or PADI) isozymes and alters charge to affect target protein structure and function. PADs were initially characterized in rodent uteri and, since then, have been described in other female tissues including ovaries, breast, and the lactotrope and gonadotrope cells of the anterior pituitary gland. In these tissues and cells, estrogen robustly stimulates PAD expression resulting in changes in levels over the course of the female reproductive cycle.

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The transformation of quiescent keratocytes to activated fibroblasts and myofibroblasts (KFM transformation) largely depends on transforming growth factor beta (TGFβ) signaling. Initiation of the TGFβ signaling cascade results from binding of TGFβ to the labile type I TGFβ receptor (TGFβRI), which is stabilized by the 90 kDa heat shock protein (Hsp90). Since myofibroblast persistence within the corneal stroma can result in stromal haze and corneal fibrosis in patients undergoing keratorefractive therapy, modulation of TGFβ signaling through Hsp90 inhibition would represent a novel approach to prevent myofibroblast persistence.

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Purpose: The purpose of this study is to determine the effect of Cytoglobin (Cygb) deficiency on Crb1-related retinopathy. The Crb1 cell polarity complex is required for photoreceptor function and survival. Crb1-related retinopathies encompass a broad range of phenotypes which are not completely explained by the variability of Crb1 mutations.

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Article Synopsis
  • The text refers to a correction made to a previously published article with the DOI: 10.1038/s42003-018-0226-0.
  • The correction is likely important for ensuring the accuracy and integrity of the research findings presented in the original article.
  • Readers are encouraged to check the corrected version for updated information that may affect the conclusions or interpretations of the study.
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Article Synopsis
  • Advances in next generation sequencing have made it easier to study genetics, but understanding genetic causes of eye diseases is still tough due to cost and limited access to human genetic data.
  • The International Mouse Phenotyping Consortium conducted a study evaluating 4,364 genes and found that 347 of them affect eye traits, with 75% being previously unknown in eye disease research.
  • This significant increase in known genes related to eye conditions could have future implications for understanding eye development and diseases in humans.
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Objective: To investigate the effect of topically applied proparacaine on bacterial and fungal culture results and to compare cytologic and culture results in patients with ulcerative keratitis.

Procedure: Corneal samples were collected from 33 dogs, 19 horses, and 12 cats with spontaneously arising ulcerative keratitis. Samples for bacterial (dogs, cats, horses) and fungal (horses) cultures were collected prior to and following application of 0.

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Purpose: The purpose of this study was to quantify the frequency and severity of ocular abnormalities affecting wild-type C57BL/6N mice, the most common strain used worldwide for the creation of single-gene knockouts.

Methods: A total of 2773 animals (5546 eyes) were examined at one colony at UC Davis and in three more colonies at the Institut Clinique de la Souris in Strasbourg, France. Mice were examined at 15 to 16 weeks postnatal age by performing anterior segment biomicroscopy, posterior segment examination by indirect ophthalmoscopy, intraocular pressure measurement, and optical coherence tomography of anterior and posterior segment structures.

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Case Series Summary: Described are 13 cats diagnosed with deep ulcerative keratitis and successfully managed medically without grafting procedures. Typical treatment involved frequent topical application of serum and antibiotics (usually a fluoroquinolone and a cephalosporin). Seven cats also received systemic antibiotics.

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An adult great-horned owl (Bubo virginianus; GHOW) presented with a history of recurrent corneal ulceration of the right eye (OD). Findings included ulcerative superficial keratitis, proliferative conjunctivitis, and iris pigmentary changes. The ulcer was initially nonresponsive to medical therapy, but showed rapid and appropriate healing following diamond burr debridement.

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This retrospective case series evaluates husbandry and environmental conditions in relation to eosinophilic keratitis in horses. While no associations were found between disease and husbandry practices or specific environmental factors such as humidity or temperature, an increased prevalence of presentation in summer months was identified in this population of horses.

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