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191 result(s) for "Johnson, Jessica L."
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A Review of the Quality Indicators of Rigor in Qualitative Research
Attributes of rigor and quality and suggested best practices for qualitative research design as they relate to the steps of designing, conducting, and reporting qualitative research in health professions educational scholarship are presented. A research question must be clear and focused and supported by a strong conceptual framework, both of which contribute to the selection of appropriate research methods that enhance trustworthiness and minimize researcher bias inherent in qualitative methodologies. Qualitative data collection and analyses are often modified through an iterative approach to answering the research question. Researcher reflexivity, essentially a researcher’s insight into their own biases and rationale for decision-making as the study progresses, is critical to rigor. This article reviews common standards of rigor, quality scholarship criteria, and best practices for qualitative research from design through dissemination.
Endothelial‐Derived Extracellular Vesicles During Exercise in COPD Patients
Introduction There are no treatments directly targeting the pulmonary vasculature in chronic obstructive pulmonary disease (COPD), and further characterization of the underlying endothelial cell (EC) abnormalities could be helpful in drug development. Methods We investigated the influence of exercise and the prostacyclin analog iloprost on extracellular vesicles derived from ECs (eEVs) in 15 moderate–severe COPD patients who were enrolled in a randomized, placebo‐controlled crossover trial of iloprost. Results Active smokers had a profile consistent with inflammatory‐derived EVs, while exacerbation‐prone COPD subjects had a profile consistent with apoptosis‐derived eEVs. There were no significant effects of iloprost on eEV levels. However, there was a significant increase in CD144+ and CD31+/CD144+ EVs 1 h after exercise. Conclusions Endothelial‐derived EV profiles differed based on smoking and exacerbation history. Iloprost did not affect eEV levels, although maximal exercise induced a delayed increase in a subset of eEVs, possibly through shear stress. In this secondary analysis of a placebo‐controlled crossover trial enrolling COPD patients, there was no difference in exercise‐induced changes of endothelial‐derived extracellular vesicles (eEVs) between iloprost and placebo. The eEV profile was different based on smoking and exacerbation history. Compared to baseline values, eEV levels increased 1 h after maximal exercise.
Functional Imaging of Microbial Interactions With Tree Roots Using a Microfluidics Setup
Coupling microfluidics with microscopy has emerged as a powerful approach to study at cellular resolution the dynamics in plant physiology and root-microbe interactions (RMIs). Most devices have been designed to study the model plant at higher throughput than conventional methods. However, there is a need for microfluidic devices which enable studies of root development and RMIs in woody plants. Here, we developed the RMI-chip, a simple microfluidic setup in which (aspen tree) seedlings can grow for over a month, allowing continuous microscopic observation of interactions between live roots and rhizobacteria. We find that the colonization of growing aspen roots by in the RMI-chip involves dynamic biofilm formation and dispersal, in keeping with previous observations in a different experimental set-up. Also, we find that whole-cell biosensors based on the rhizobacterium can be used to monitor compositional changes in the rhizosphere but that the application of these biosensors is limited by their efficiency at colonizing aspen roots and persisting. These results indicate that functional imaging of dynamic root-bacteria interactions in the RMI-chip requires careful matching between the host plant and the bacterial root colonizer.
Fixed‐target serial crystallography at the Structural Biology Center
Serial synchrotron crystallography enables the study of protein structures under physiological temperature and reduced radiation damage by collection of data from thousands of crystals. The Structural Biology Center at Sector 19 of the Advanced Photon Source has implemented a fixed‐target approach with a new 3D‐printed mesh‐holder optimized for sample handling. The holder immobilizes a crystal suspension or droplet emulsion on a nylon mesh, trapping and sealing a near‐monolayer of crystals in its mother liquor between two thin Mylar films. Data can be rapidly collected in scan mode and analyzed in near real‐time using piezoelectric linear stages assembled in an XYZ arrangement, controlled with a graphical user interface and analyzed using a high‐performance computing pipeline. Here, the system was applied to two β‐lactamases: a class D serine β‐lactamase from Chitinophaga pinensis DSM 2588 and L1 metallo‐β‐lactamase from Stenotrophomonas maltophilia K279a. A fixed‐target 3D‐printed mesh‐holder optimized for sample handling for serial synchrotron crystallography was implemented. This allows rapid data collection from microcrystals. Data are analyzed and structures determined using a high‐performance computing pipeline.
An evaluation of virtual supervision effectiveness within department of veterans affairs (VA) health professionals training programs
Background Limited information exists on whether virtual training is equivalent to traditional in-person training in supporting the development of clinical providers. Methods A multi-site evaluation using survey methods was conducted with a multidisciplinary group of health professions trainees and supervisors within the Veterans Health Administration to assess the equivalence of two supervision modalities – exclusively in-person supervision and supervision incorporating at least some virtual supervision – on trainee clinical competency development, trainee preparedness to respond to patient emergencies, and effective trainee/supervisor working relationships. Results Trainees who experienced some virtual supervision rated their clinical competency levels as higher than trainees with only in-person supervision on competencies related to patient care, knowledge for practice, interpersonal and communication skills, practice-based learning and improvement, and systems-based practice. This trainee group also rated their level of preparation to respond to patient emergencies and several aspects of their supervisory working relationship more highly than in-person only trainees. Compared to those providing only in-person supervision, supervisors conducting some virtual supervision also rated their trainees as having higher levels of clinical competency on patient care, practice-based learning and improvement, and systems-based practice, as well as higher preparedness to respond to patient emergencies. Challenges and benefits to virtual supervision were also noted, though most trainees and supervisors who had participated in virtual supervision held a positive view of this modality. Conclusions These data constitute the first evaluation of the equivalency of some virtual and in-person only supervision in supporting trainee skill development and supervisory working relationships based on feedback from trainees and supervisors across multiple clinical disciplines. Trial registration Not applicable.
Heparin-Binding EGF-Like Growth Factor Promotes Epithelial–Mesenchymal Transition in Human Keratinocytes
We have shown that autocrine proliferation of human keratinocytes (KCs) is strongly dependent upon amphiregulin (AREG), whereas blockade of heparin-binding EGF-like growth factor (HB-EGF) inhibits KC migration in scratch wound assays. Here we demonstrate that expression of soluble HB-EGF (sHB-EGF) or full-length transmembrane HB-EGF (proHB-EGF), but not proAREG, results in profound increases in KC migration and invasiveness in monolayer culture. Coincident with these changes, HB-EGF significantly decreases mRNA expression of several epithelial markers including keratins 1, 5, 10, and 14 while increasing expression of markers of cellular motility including SNAI1, ZEB1, COX-2, and MMP1. Immunostaining revealed HB-EGF-induced expression of the mesenchymal protein vimentin and decreased expression of E-cadherin, as well as nuclear translocation of β-catenin. Suggestive of a trade-off between KC motility and proliferation, overexpression of HB-EGF also reduced KC growth by >90%. We also show that HB-EGF is strongly induced in regenerating epidermis after partial-thickness wounding of human skin. Taken together, our data suggest that expression of HB-EGF in human KCs triggers a migratory and invasive phenotype with many features of epithelial–mesenchymal transition (EMT), which may be beneficial in the context of cutaneous wound healing.
A New Suite of Plasmid Vectors for Fluorescence-Based Imaging of Root Colonizing Pseudomonads
In the terrestrial ecosystem, plant-microbe symbiotic associations are ecologically and economically important processes. To better understand these associations at structural and functional levels, different molecular and biochemical tools are applied. In this study, we have constructed a suite of vectors that incorporates several new elements into the rhizosphere stable, broad-host vector pME6031. The new vectors are useful for studies requiring multi-color tagging and visualization of plant-associated, Gram-negative bacterial strains such as plant growth promotion and biocontrol strains. A number of genetic elements, including constitutive promoters and signal peptides that target secretion to the periplasm, have been evaluated. Several next generation fluorescent proteins, namely mTurquoise2, mNeonGreen, mRuby2, DsRed-Express2 and E2-Crimson have been incorporated into the vectors for whole cell labeling or protein tagging. Secretion of mTurquoise2 and mNeonGreen into the periplasm of SBW25 has also been demonstrated, providing a vehicle for tagging proteins in the periplasmic compartment. A higher copy number version of select plasmids has been produced by introduction of a previously described mutation, affording an increase in protein expression levels. The utility of these plasmids for fluorescence-based imaging is demonstrated by root colonization of seedlings by SBW25 in a hydroponic growth system. The plasmids are stably maintained during root colonization in the absence of selective pressure for more than 2 weeks.
Professional Identity Formation in an Advanced Pharmacy Practice Experience Emphasizing Self-Authorship
Objective. To examine the extent to which reflective essays written by graduating pharmacy students revealed professional identity formation and self-authorship development. Design. Following a six-week advanced pharmacy practice experience (APPE) grounded in Baxter-Magolda’s Learning Partnerships Model of self-authorship development, students completed a culminating reflective essay on their rotation experiences and professional identity formation. Assessment. Thematic and categorical analysis of 41 de-identified essays revealed nine themes and evidence of all Baxter-Magolda’s domains and phases of self-authorship. Analysis also suggested relationships between self-authorship and pharmacist professional identity formation. Conclusion. Results suggest that purposeful structuring of learning experiences can facilitate professional identity formation. Further, Baxter-Magolda’s framework for self-authorship and use of the Learning Partnership Model seem to align well with pharmacist professional identify formation. Results of this study could be used by pharmacy faculty members when considering how to fill gaps in professional identity formation in future course and curriculum development.
A Pathway to Professional Identity Formation: Report of the 2020-2021 AACP Student Affairs Standing Committee
EXECUTIVE SUMMARY Professional identity formation (PIF) involves internalizing and demonstrating the behavioral norms, standards, and values of a professional community, such that one comes to “think, act and feel” like a member of that community. Professional identity influences how a professional perceives, explains, presents and conducts themselves. This report of the 2020-2021 AACP Student Affairs Standing Committee (SAC) describes the benefits of a strong professional identity, including its importance in advancing practice transformation. Responding to a recommendation from the 2019-2020 SAC, this report presents an illustrative and interpretative schema as an initial step towards describing a pharmacist’s identity. However, the profession must further elucidate a universal and distinctive pharmacist identity, in order to better support pharmacists and learners in explaining and presenting the pharmacist’s scope of practice and opportunities for practice change. Additionally, the report outlines recommendations for integrating intentional professional identity formation within professional curricula at colleges and schools of pharmacy. Although there is no standardized, single way to facilitate PIF in students, the report explores possibilities for meeting the student support and faculty development needs of an emerging new emphasis on PIF within the Academy.
Preparing Pharmacy Educators as Expedition Guides to Support Professional Identity Formation in Pharmacy Education
Objective. To provide an educator-friendly travel guide for supporting pharmacy students’ lifelong journey to professional identity formation. Findings. In contrast to professionalism, which has emphasized externally visible behaviors, professional identity focuses on the internalization of the attitudes, standards, and behavioral norms of a profession, such that one “thinks, acts, and feels” like a member of that profession. Identity, whether personal or professional, is continuously developed in part during interactions with others and in response to internal and external feedback on those interactions. Educators play a critical role in helping students navigate the “provocative moments” (eg, transitions, dissonance) that accompany identity formation. To help educators travel with purpose, several identity formation theories suggest means of creating learning experiences and supporting the development of a professional identity. Additionally, guidebooks for the trip (ie, published literature) provide examples of didactic and experiential teaching approaches that can be used to promote professional identity formation. While further exploration and research are necessary, traveling this journey with colleagues can help members of the Academy succeed in sustainably and effectively infusing intentional professional identity formation within pharmacy education and training. Summary. There are myriad ways for educators to develop and support professional identity formation, which can present a challenge when defining the role that educators play in this complex, dynamic process. Educators must understand the reasoning behind various approaches and the common dialogue used to engage and support learners as their expedition guides on the lifelong journey to professional identity formation.