Alleviating stressfeeding in the emergency department: Elucidating the tensions induced by workplace lactation space issues.

Objectives: Women remain underrepresented in the emergency medicine (EM) workforce, academic EM, and institutional leadership. In order to support women physicians in EM, we must explore factors that contribute to attrition and workplace satisfaction. For example, tensions between workplace and familial roles are important to consider as women navigate careers in EM.

KLF4 in smooth muscle cell-derived progenitor cells is essential for angiotensin II-induced cardiac inflammation and fibrosis.

Cardiac fibrosis is defined by the excessive accumulation of extracellular matrix (ECM) material resulting in cardiac tissue scarring and dysfunction. While it is commonly accepted that myofibroblasts are the major contributors to ECM deposition in cardiac fibrosis, their origin remains debated. By combining lineage tracing and RNA sequencing, our group made the paradigm-shifting discovery that a subpopulation of resident vascular stem cells residing within the aortic, carotid artery, and femoral aartery adventitia (termed AdvSca1-SM cells) originate from mature vascular smooth muscle cells (SMCs) through an reprogramming process.

glycan biosynthesis modulates host immune cell recognition and response.

Introduction: The pathogenic bacterium has evolved glycan-mediated mechanisms to evade host immune defenses. This study tests the hypothesis that genetic disruption of glycan biosynthesis alters immune recognition and response by human gastric epithelial cells and monocyte-derived dendritic cells.

Methods: To test this hypothesis, human cell lines were challenged with wildtype alongside an array of glycosylation mutants.

Smooth muscle-derived adventitial progenitor cells direct atherosclerotic plaque composition complexity in a Klf4-dependent manner.

We previously established that vascular smooth muscle-derived adventitial progenitor cells (AdvSca1-SM) preferentially differentiate into myofibroblasts and contribute to fibrosis in response to acute vascular injury. However, the role of these progenitor cells in chronic atherosclerosis has not been defined. Using an AdvSca1-SM cell lineage tracing model, scRNA-Seq, flow cytometry, and histological approaches, we confirmed that AdvSca1-SM-derived cells localized throughout the vessel wall and atherosclerotic plaques, where they primarily differentiated into fibroblasts, smooth muscle cells (SMC), or remained in a stem-like state.

Mapping horizon scanning systems for medical devices: similarities, differences, and lessons learned.

Objectives: This article presents the mapping of horizons scanning systems (HSS) for medical devices, conducted by the Medical Devices Working Group of the International Horizon Scanning Initiative (IHSI MDWG). It provides an overview of the identified HSS, highlights similarities and differences between the systems, and lessons learned.

Methods: Potentially relevant HSS were identified through literature searches, scan of an overview of EuroScan members, and input from the IHSI MDWG members.

Confounding Effects of Tamoxifen: Cautionary and Practical Considerations for the Use of Tamoxifen-Inducible Mouse Models in Atherosclerosis Research-Brief Report.

Background: In recent years, fate-mapping lineage studies in mouse models have led to major advances in vascular biology by allowing investigators to track specific cell populations in vivo. One of the most frequently used lineage tracing approaches involves tamoxifen-inducible Cre-LoxP systems. However, tamoxifen treatment can also promote effects independent of Cre recombinase activation, many of which have not been fully explored.

Thioglycosides Act as Metabolic Inhibitors of Bacterial Glycan Biosynthesis.

Glycans that coat the surface of bacteria are compelling antibiotic targets because they contain distinct monosaccharides that are linked to pathogenesis and are absent in human cells. Disrupting glycan biosynthesis presents a path to inhibiting the ability of a bacterium to infect the host. We previously demonstrated that O-glycosides act as metabolic inhibitors and disrupt bacterial glycan biosynthesis.

Smooth muscle-derived adventitial progenitor cells promote key cell type transitions controlling plaque stability in atherosclerosis in a Klf4-dependent manner.

We previously established that vascular smooth muscle-derived adventitial progenitor cells (AdvSca1-SM) preferentially differentiate into myofibroblasts and contribute to fibrosis in response to acute vascular injury. However, the role of these progenitor cells in chronic atherosclerosis has not been defined. Using an AdvSca1-SM lineage tracing model, scRNA-Seq, flow cytometry, and histological approaches, we confirmed that AdvSca1-SM cells localize throughout the vessel wall and atherosclerotic plaques, where they primarily differentiate into fibroblasts, SMCs, or remain in a stem-like state.

Imaging With PET/CT of Diffuse CD8 T-Cell Infiltration of Skeletal Muscle in Patients With Inclusion Body Myositis.

Background And Objectives: Inclusion body myositis (IBM) is a progressive autoimmune skeletal muscle disease in which cytotoxic CD8 T cells infiltrate muscle and destroy myofibers. IBM has required a muscle biopsy for diagnosis. Here, we administered to patients with IBM a novel investigational PET tracer Zr-Df-crefmirlimab for in vivo imaging of whole body skeletal muscle CD8 T cells.

Kidney disease in patients with chronic liver disease: Does sex matter?

Kidney disease in patients with liver disease is serious and increases mortality. Up to 50% of patients hospitalized experience an episode of acute kidney injury. In general, men with liver disease are thought to be at increased risk of kidney disease.

Redistribution of the chromatin remodeler Brg1 directs smooth muscle-derived adventitial progenitor-to-myofibroblast differentiation and vascular fibrosis.

Vascular smooth muscle-derived Sca1+ adventitial progenitor (AdvSca1-SM) cells are tissue-resident, multipotent stem cells that contribute to progression of vascular remodeling and fibrosis. Upon acute vascular injury, AdvSca1-SM cells differentiate into myofibroblasts and are embedded in perivascular collagen and the extracellular matrix. While the phenotypic properties of AdvSca1-SM-derived myofibroblasts have been defined, the underlying epigenetic regulators driving the AdvSca1-SM-to-myofibroblast transition are unclear.

Extracellular matrix stiffness controls cardiac valve myofibroblast activation through epigenetic remodeling.

Aortic valve stenosis (AVS) is a progressive fibrotic disease that is caused by thickening and stiffening of valve leaflets. At the cellular level, quiescent valve interstitial cells (qVICs) activate to myofibroblasts (aVICs) that persist within the valve tissue. Given the persistence of myofibroblasts in AVS, epigenetic mechanisms have been implicated.

Genome Sequences and Characteristics of Six Cluster B1 Mycobacteriophages Discovered at Saint Joseph's University.

We report on six new siphoviruses infecting Mycobacterium smegmatis that were isolated from soil samples collected on the campus of Saint Joseph's University, on the western edge of Philadelphia, Pennsylvania. All phages have circularly permuted genomes that are 68,721 to 68,929 bp long, with an average G+C content of 66.4%.

Bound Variable Singular Is Underspecified: The Case of vs. .

The goal of this article is to investigate the factors that affect the acceptability and processing of . Previous research has sought to determine whether there are acceptability and processing differences between with plural vs. singular antecedents, with mixed results.

Lessons learned about the biology and genomics of Diaphorina citri infection with "Candidatus Liberibacter asiaticus" by integrating new and archived organ-specific transcriptome data.

Background: Huanglongbing, a devastating disease of citrus, is caused by the obligate, intracellular bacterium "Candidatus Liberibacter asiaticus" (CLas). CLas is transmitted by Diaphorina citri, the Asian citrus psyllid. Development of transmission-blocking strategies to manage huanglongbing relies on knowledge of CLas and D.

Exploring tattoo artists' understanding of decorative non-medical professional tattooing as a method of scar camouflage and decoration.

Research surrounding the use of decorative tattooing by non-medical professional tattooists as a form of scar camouflage or decoration is limited. This study provides critical and deepening insights into tattoo artists' experiences of tattooing scars, to help inform a more in-depth understanding of its uses from a health and wellbeing perspective. Specifically, it aimed to explore qualitatively, the different methods and techniques used by non-medical tattoo professionals to cover up or decorate scars, which can have a psychological impact on those affected.

Synthesis and Application of Rare Deoxy Amino l-Sugar Analogues to Probe Glycans in Pathogenic Bacteria.

Bacterial cell envelope glycans are compelling antibiotic targets as they are critical for strain fitness and pathogenesis yet are virtually absent from human cells. However, systematic study and perturbation of bacterial glycans remains challenging due to their utilization of rare deoxy amino l-sugars, which impede traditional glycan analysis and are not readily available from natural sources. The development of chemical tools to study bacterial glycans is a crucial step toward understanding and altering these biomolecules.

Genes That Escape X Chromosome Inactivation Modulate Sex Differences in Valve Myofibroblasts.

Background: Aortic valve stenosis is a sexually dimorphic disease, with women often presenting with sustained fibrosis and men with more extensive calcification. However, the intracellular molecular mechanisms that drive these clinically important sex differences remain underexplored.

Methods: Hydrogel biomaterials were designed to recapitulate key aspects of the valve tissue microenvironment and to serve as a culture platform for sex-specific valvular interstitial cells (VICs; precursors to profibrotic myofibroblasts).

Is Lactating in the Emergency Department a Letdown? Exploring Barriers and Supports to Workplace Lactation in Emergency Medicine.

Study Objective: To explore the social and environmental conditions in emergency departments that contribute to perceived barriers and supports for workplace lactation among individuals working in emergency medicine.

Methods: Constructivist grounded theory was used by our team to understand the social processes and behaviors associated with workplace lactation for health care professionals working in EDs. A total of 24 interviews of individuals in EDs with recent return-to-work experience after childbirth were performed.

Heterogeneous subpopulations of adventitial progenitor cells regulate vascular homeostasis and pathological vascular remodelling.

Cardiovascular diseases are characterized by chronic vascular dysfunction and provoke pathological remodelling events, such as neointima formation, atherosclerotic lesion development, and adventitial fibrosis. While lineage-tracing studies have shown that phenotypically modulated smooth muscle cells (SMCs) are the major cellular component of neointimal lesions, the cellular origins and microenvironmental signalling mechanisms that underlie remodelling along the adventitial vascular layer are not fully understood. However, a growing body of evidence supports a unique population of adventitial lineage-restricted progenitor cells expressing the stem cell marker, stem cell antigen-1 (Sca1; AdvSca1 cells) as important effectors of adventitial remodelling and suggests that they are at least partially responsible for subsequent pathological changes that occur in the media and intima.

A Four-Week-Old Infant With Respiratory Distress: An Emergency Department Case Presentation of Congenital Lobar Emphysema.

Congenital lobar emphysema (CLE) and congenital pulmonary lymphangiectasis (CPL) are rare conditions that are most often identified with prenatal ultrasonography. Occasionally, this disease process is first identified in the emergency department (ED), where the physician should avoid common pitfalls in order to prevent acute decompensation. To the best of our knowledge, there are no prior reports in the emergency medicine literature of CLE or CPL presenting to the ED as undifferentiated respiratory distress in an infant.

Pronouns Are as Sensitive to Structural Constraints as Reflexives in Early Processing: Evidence From Visual World Paradigm Eye-Tracking.

A number of studies in the extant literature report findings that suggest asymmetry in the way reflexive and pronoun anaphors are interpreted in the early stages of processing: that pronouns are less sensitive to structural constraints, as formulated by Binding Theory, than reflexives, in the initial antecedent retrieval process. However, in previous visual world paradigm eye-tracking studies, these conclusions were based on sentences that placed the critical anaphors within picture noun phrases or prepositional phrases, which have independently been shown not to neatly conform to the Binding Theory principles. We present results from a visual world paradigm eye-tracking experiment that show that when critical anaphors are placed in the indirect object position immediately following a verb as a recipient argument, pronoun and reflexive processing are equally sensitive to structural constraints.