Assembly Pathway of a Bacterial Complex Iron Sulfur Molybdoenzyme

Protein folding and assembly into macromolecule complexes within the living cell is a complex process requiring intimate coordination. The biogenesis of complex iron sulphur molybdoenzymes (CISM) requires use of a system specific chaperone – a redox enzyme maturation protein (REMP) – to help mediate final folding and assembly. The CISM Dimethyl sulfoxide (DMSO) reductase is a bacterial anaerobic respiratory oxidoreductase that utilizes DMSO as a final electron acceptor to survive within anoxic conditions. The REMP DmsD strongly interacts with DMSO reductase to facilitate folding, cofactor-insertion, subunit assembly and targeting of the multi-subunit enzyme prior to membrane translocation and final assembly and maturation into a bioenergetic catalytic unit. In this article, we discuss the biogenesis of DMSO reductase as an example of the participant network for bacterial CISM maturation pathways.CIHRYe

Principal component analysis of the relationship between pelvic inclination and lumbar lordosis

Abstract Background The purpose of this study was to describe the relationship between pelvic inclination (PI) and lumbar lordosis (LL). Pelvic inclination and pelvic tilt are two different names for the same metric. The geometrical parameters of the spine and pelvis were measured using surface topography scanning, and the data was explored for any physical relationships using principal component analysis. Once widely assumed to be a direct correlation, research in the 1980s first cast doubt upon the PI to LL relationship. And yet, other studies have suggested a relationship does exist. Decades later, the rehabilitation professionals often still rely on this supposed correlation when making decisions about rehabilitation treatment interventions. This theoretical relationship requires further clarification, which is explored herein. Methods Surface topography imaging is a technology that has proven to be a radiation-free way to produce accurate, reliable skeletal alignment measures. Patient data from one physical rehabilitation clinic was collected at the time of initial assessment. Patients presented with a wide range of musculoskeletal complaints. Surface topography scans were performed on 107 patients at the commencement and completion of their therapy. Principal component analysis was performed on the collected data to determine how these spine and pelvic alignment parameters changed between the two points in time and what trends and/or relationships exist between the parameters. Our analysis evaluated eight spinal and pelvic measurements as input and focused on LL and PI as the two principal components at time points of beginning and completion of treatment. Results Pelvic inclination and lumbar lordosis changed during treatment but were not correlated. Conclusion Our data demonstrates that pelvic inclination and lumbar lordosis do not have a predictable relationship as previously assumed

Exploring the impact of the COVID-19 pandemic on medical learner wellness: a needs assessment for the development of learner wellness interventions

Background: On March 11, 2020 the World Health Organization declared the novel coronavirus SARS-CoV-2 disease (COVID-19) a global pandemic. We sought to understand impact of COVID-19 on learner wellness at a large tertiary care academic institution to inform the future development of learner wellness interventions during the COVID-19 pandemic.Methods: A cross-sectional, internet-based survey collected quantitative and qualitative data from learners April-June 2020. Descriptive statistics and univariate analyses were reported for quantitative data. Open-ended, qualitative responses were analyzed deductively using thematic analysis.Results: Twenty percent of enrolled learners in that faculty of medicine (540/2741) participated including undergraduate [Bachelor’s] students (25.7%), graduate [science] students (27.5%), undergraduate medical students (22.8%), and postgraduate resident physicians (23.5%). We found that learner wellness across all stages of training was negatively impacted and the ways in which learners were impacted varied as a result of their program's response to the COVID-19 pandemic.Conclusions: Learners in health sciences and medical education report worsening well-being because of the programs and the systems in which they function with the added burden of the COVID-19 pandemic. Future interventions would benefit from a holistic framework of learner wellness while engaging in systems thinking to understand how individuals, programs and respective systems intersect. The importance of acknowledging equity, diversity and inclusion, fostering psychological safety and engaging learners as active participants in their journey during a pandemic and beyond are key elements in developing wellness interventions.Contexte : Le 11 mars 2020, l’Organisation mondiale de la santé a déclaré que le nouveau coronavirus SRAS-CoV-2 (COVID-19) était pandémique. Nous avons tenté de cerner l’impact de la COVID-19 sur le bien-être des apprenants dans un grand centre universitaire de soins tertiaires afin d’étayer le développement futur d’interventions en faveur du bien-être des apprenants en contexte de pandémie.Méthodes : Une enquête transversale par sondage en ligne, menée entre les mois d’avril et juin 2020, a permis de recueillir des données quantitatives et qualitatives auprès des apprenants. Des statistiques descriptives et des analyses univariées ont été présentées comme données quantitatives. Les réponses ouvertes, qualitatives, ont été analysées de manière déductive par le biais d’une analyse thématique.Résultats : Vingt pour cent des étudiants de la faculté de médecine (540/2741) ont participé, dont 25,7 % étaient inscrits au premier cycle (baccalauréat), 27,5 % au deuxième cycle (sciences), 22,8 % au premier cycle en médecine et 23,5 % étaient résidents. Nous avons constaté que la pandémie a négativement affecté le bien-être des apprenants à tous les niveaux de formation et que les effets précis sur les étudiants pouvaient varier en fonction de la réponse de leur programme à la situation sanitaire.Conclusions : Les étudiants en médecine et en sciences de la santé signalent une détérioration de leur bien-être liée aux programmes et aux systèmes dans lesquels ils évoluent, auxquels s’ajoute le fardeau supplémentaire de la pandémie de la COVID-19. Il conviendrait de définir les interventions futures sur la base d’un cadre holistique du bien-être des apprenants tout en adoptant une réflexion systémique pour appréhender l’entrecroisement entre individus, programmes et systèmes.  Reconnaître l’importance de l’équité, de la diversité et de l’inclusion, favoriser la sécurité psychologique et assurer la participation active des apprenants dans leur parcours pendant la pandémie et au-delà, constituent des éléments clés dans l’élaboration d’interventions au profit de leur bien-être

Impact of social media interventions and tools among informal caregivers of critically ill patients after patient admission to the intensive care unit: A scoping review.

BackgroundThe use of social media in healthcare continues to evolve. The purpose of this scoping review was to summarize existing research on the impact of social media interventions and tools among informal caregivers of critically ill patients after patient admission to the intensive care unit (ICU).MethodsThis review followed established scoping review methods, including an extensive a priori-defined search strategy implemented in the MEDLINE, EMBASE, PsycINFO, CINAHL, and the Cochrane CENTRAL Register of Controlled Trials databases to July 10, 2020. Primary research studies reporting on the use of social media by informal caregivers for critically ill patients were included.ResultsWe identified 400 unique citations and thirty-one studies met the inclusion criteria. Nine were interventional trials-four randomized controlled trials (RCTs)-and a majority (n = 14) were conducted (i.e., data collected) between 2013 to 2015. Communication platforms (e.g., Text Messaging, Web Camera) were the most commonly used social media tool (n = 17), followed by social networking sites (e.g., Facebook, Instagram) (n = 6), and content communities (e.g., YouTube, SlideShare) (n = 5). Nine studies' primary objective was caregiver satisfaction, followed by self-care (n = 6), and health literacy (n = 5). Nearly every study reported an outcome on usage feasibility (e.g., user attitudes, preferences, demographics) (n = 30), and twenty-three studies reported an outcome related to patient and caregiver satisfaction. Among the studies that assessed statistical significance (n = 18), 12 reported statistically significant positive effects of social media use. Overall, 16 of the 31 studies reported positive conclusions (e.g., increased knowledge, satisfaction, involvement) regarding the use of social media among informal caregivers for critically ill patients.ConclusionsSocial media has potential benefits for caregivers of the critically ill. More robust and clinically relevant studies are required to identify effective social media strategies used among caregivers for the critically ill

Adverse events associated with administration of vasopressor medications through a peripheral intravenous catheter: a systematic review and meta-analysis

Abstract Background It is unclear whether vasopressors can be safely administered through a peripheral intravenous (PIV). Systematic review and meta-analysis methodology was used to examine the incidence of local anatomic adverse events associated with PIV vasopressor administration in patients of any age cared for in any acute care environment. Methods MEDLINE, EMBASE, CINAHL, the Cochrane Central Register of controlled trials, and the Database of Abstracts of Reviews of Effects were searched without restriction from inception to October 2019. References of included studies and related reviews, as well as relevant conference proceedings were also searched. Studies were included if they were: (1) cohort, quasi-experimental, or randomized controlled trial study design; (2) conducted in humans of any age or clinical setting; and (3) reported on local anatomic adverse events associated with PIV vasopressor administration. Risk of bias was assessed using the Revised Cochrane risk-of-bias tool for randomized trials or the Joanna Briggs Institute checklist for prevalence studies where appropriate. Incidence estimates were pooled using random effects meta-analysis. Subgroup analyses were used to explore sources of heterogeneity. Results Twenty-three studies were included in the systematic review, of which 16 and 7 described adults and children, respectively. Meta-analysis from 11 adult studies including 16,055 patients demonstrated a pooled incidence proportion of adverse events associated with PIV vasopressor administration as 1.8% (95% CI 0.1–4.8%, I2 = 93.7%). In children, meta-analysis from four studies and 388 patients demonstrated a pooled incidence proportion of adverse events as 3.3% (95% CI 0.0–10.1%, I2 = 82.4%). Subgroup analyses did not detect any statistically significant effects associated with stratification based on differences in clinical location, risk of bias or design between studies, PIV location and size, or vasopressor type or duration. Most studies had high or some concern for risk of bias. Conclusion The incidence of adverse events associated with PIV vasopressor administration is low. Additional research is required to examine the effects of PIV location and size, vasopressor type and dose, and patient characteristics on the safety of PIV vasopressor administration