Excitation of "forbidden" guided-wave plasmon polariton modes via direct reflectance using a low refractive index polymer coupling layer.

A surface plasmon polariton (SPP) is an excitation resulting from the coupling of light to a surface charge oscillation at a metal-dielectric interface. The excitation and detection of SPPs is foundational to the operating mechanism of a number of important technologies, most of which require SPP excitation via direct reflectance, commonly achieved via Attenuated Total Reflection (ATR) using the Kretschmann configuration. As a result, the accessible modes are fundamentally high-loss "leaky modes," presenting a critical performance barrier. Recently, our group provided the first demonstration of "forbidden," or guided-wave plasmon polariton modes (GW-PPMs), collective modes of a MIM structure with oscillatory electric field amplitude in the central insulator layer with up to an order of magnitude larger propagation lengths than those of traditional SPPs. However, in that work, GW-PPMs were accessed by indirect reflectance using Otto configuration ATR, making them of limited applied relevance. In this paper, we demonstrate a technique for direct reflectance excitation and detection of GW-PPMs. Specifically, we replace the air gap used in traditional Otto ATR with a low refractive index polymer coupling layer, mirroring a technique previously demonstrated to access Long-Range Surface Plasmon Polariton modes. We fit experimental ATR data using a robust theoretical model to confirm the character of the modes, as well as to explore the potential of this approach to enable advantageous propagation lengths. The ability to excite GW-PPMs using a device configuration that does not require an air gap could potentially enable transformative performance enhancements in a number of critical technologies.

The experience of baccalaureate clinical nursing faculty transitioning to emergency remote clinical teaching during the COVID-19 pandemic: Lessons for the future.

BACKGROUND: Experiential clinical learning in undergraduate nursing education allows for fusion of nursing knowledge with practice to ensure the development of competent graduate nurses. The global COVID-19 pandemic necessitated an abrupt transition from in-person clinical educational experiences to emergency remote clinical teaching. OBJECTIVES: The purpose of this study was to describe the experiences of baccalaureate nursing clinical faculty who transitioned from in-person clinical to emergency remote clinical teaching during the COVID-19 pandemic in spring 2020. DESIGN: A qualitative descriptive design was used. SETTING: The study took place in the United States. PARTICIPANTS: Nineteen baccalaureate nursing clinical faculty participated in the study. METHODS: Participants engaged in semi-structured, in-depth, online interviews. RESULTS: Five themes emerged from the data: transition, collaboration and support, the joy of teaching, authentic professional experience, and the overarching primary theme, stress of the moment. CONCLUSIONS: The transition to emergency remote clinical teaching during the COVID-19 pandemic caused stress and anxiety. However, there were important lessons learned about how to best support students and faculty while providing a robust online learning experience. Understanding the experiences of clinical nursing faculty during this abrupt transition can support recommendations for best practices in the future.

Economic impact and health care utilization outcomes of diabetes self-management education and support interventions for persons with diabetes: a systematic review protocol.

OBJECTIVE: The aim of this systematic review is to summarize and synthesize existing research on the economic impact of diabetes self-management education and support. INTRODUCTION: Diabetes self-management education and support is an essential component of diabetes care, yet it continues to be underutilized. A gap exists regarding the true measured economic impact of this intervention. INCLUSION CRITERIA: This review will consider studies that report the measured economic impact and health care utilization of diabetes self-management education and support for persons with diabetes or their caregivers. The inclusion criteria are as follows: quantitative studies providing measured data on the economic outcomes and health care utilization of diabetes self-management education and support interventions that include at least one of the Association for Diabetes Care and Education Specialists Seven Self-Care Behaviors. METHODS: The review will search the following databases: MEDLINE Epub Ahead of Print, In-Process and Other Non-Indexed Citations, Daily and Versions; Embase; Scopus; CINAHL; ERIC, Cochrane Database of Systematic Reviews; and the Cochrane Register of Controlled Trials. Additionally, a search of gray literature will be performed using Google Scholar. Date limitations will be from January 2006 to May 2020. Two members of the research team will independently screen abstracts and full texts, and extract data. The screening process will be described using the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Articles will be assessed for risk of bias using the JBI critical appraisal tools. Data will be narratively summarized. SYSTEMATIC REVIEW REGISTRATION: PROSPERO (CRD42020166743).

Economic Impact and Health Care Utilization Outcomes of Diabetes Self-Management Education and Support Interventions for Persons With Diabetes: A Systematic Review and Recommendations for Future Research.

PURPOSE: Value-driven outcomes are important because health systems determine sustainability of diabetes self-management education and support (DSMES) programming. Health care utilization and clinical outcomes are critical factors when considering the impact of DSMES programs. OBJECTIVE: The aim of this systematic review was to describe studies that report on the economic and health care utilization outcomes of diabetes self-management programs. METHODS: A systematic literature review was performed in multiple databases. Studies reporting economic and health care utilization outcomes related to DSMES and including 1 or more of the ADCES7 Self-Care BehaviorsTM from January 2006 to May 2020 were included. Eligible articles needed to compare the intervention and comparison group and report on economic impact. The methodological quality was assessed with the Joanna Briggs Institute Critical Appraisal Checklist specific to each individual study design. RESULTS: A total of 22 of 14 556 articles published between 2007 and 2020 were included. Cost benefits varied, and there were considerable methodological heterogeneity among design, economic measures, population, perspective, intervention, and biophysical outcomes. CONCLUSION: DSMES interventions may positively impact economic outcomes and/or health care utilization, although not all studies showed consistent benefit. This review highlights an evidence gap, and future health economic evaluations are warranted.

A rare case of bilateral testicular torsion in a 57-year-old man.

CONTEXT: Testicular torsion, the twisting of the testis or spermatic cord, places the testis at risk of vascular compromise and is a surgical emergency. Testicular torsion is predominantly unilateral (98% of torsion cases) and primarily affects neonates and adolescents in a bimodal distribution. Bilateral testicular torsion is exceedingly rare (2% of cases) and is associated with neonates. To the authors' best knowledge, there have been no reports of bilateral torsion in adult males over the age of 24. CASE DETAILS: A 57-year-old man presented to the emergency department 9 days after developing testicular pain while lifting his lawnmower. Ultrasonography performed at an outside facility was unremarkable. He was encouraged to followup with urology as an outpatient. Despite outpatient analgesia, he continued to experience pain and returned to the ED, where repeat ultrasonography demonstrated bilateral torsion with hypoperfusion. DISCUSSION: Although testicular torsion is uncommon, the clinician must recognize torsion; if left untreated, torsion leads to infertility. Previous publications suggest that ultrasonographic findings of bilateral testicular torsion should be attributed to "technical failure" rather than a plausible diagnosis. However, this case demonstrates the importance of maintaining a high index of suspicion, especially with an atypical age range and pathological presentation, particularly among men during their reproductive years.

TGFß1 mediates alcohol-induced Nrf2 suppression in lung fibroblasts.

BACKGROUND: Chronic alcohol ingestion induces the expression of transforming growth factor beta-1(TGFß1), inhibits nuclear factor (erythroid-derived 2)-like 2 (Nrf2)-mediated activation of the antioxidant response element (ARE), depletes alveolar glutathione pools, and potentiates acute lung injury. In this study, we examined the mechanistic relationship between TGFß1 and Nrf2-ARE signaling in the experimental alcoholic lung. METHODS: Wild-type mice were treated ± alcohol in drinking water for 8 weeks and their lungs were assessed for Nrf2 expression. In parallel, mouse lung fibroblasts were cultured ± alcohol and treated ± sulforaphane (SFP; an activator of Nrf2), ±TGFß1, ±TGFß1 neutralizing antibody, and/or ±activin receptor-like kinase 5 inhibitors (to block TGß1 receptor signaling) and then analyzed for the expression of Nrf2, Kelch-like ECH-associated protein 1 (Keap1) and TGFß1, Nrf2-ARE activity, and the expression of the Nrf2-ARE-dependent antioxidants glutathione s-transferase theta 2 (GSTT2) and glutamate-cysteine ligase catalytic subunit (GCLC). Finally, silencing RNA (siRNA) of Nrf2 was then performed prior to alcohol exposure and subsequent analysis of TGFß1 expression. RESULTS: Alcohol treatment in vivo or in vitro decreased Nrf2 expression in murine whole lung and lung fibroblasts, respectively. In parallel, alcohol exposure in vitro decreased Keap1 gene and protein expression in lung fibroblasts. Furthermore, alcohol exposure increased TGFß1 expression but decreased Nrf2-ARE activity and expression of the ARE-dependent genes for GSTT2 and GCLC. These effects of alcohol were prevented by treatment with SFP; in contrast, Nrf2 SiRNA expression exacerbated alcohol-induced TGFß1 expression. Finally, TGFß1 treatment directly suppressed Nrf2-ARE activity whereas blocking TGFß1 signaling attenuated alcohol-induced suppression of Nrf2-ARE activity. CONCLUSIONS: Alcohol-induced oxidative stress is mediated by TGFß1, which suppresses Nrf2-ARE-dependent expression of antioxidant defenses and creates a vicious cycle that feeds back to further increase TGFß1 expression. These effects of alcohol can be mitigated by activation of Nrf2, suggesting a potential therapy in individuals at risk for lung injury due to alcohol abuse.