"Weighing the Pros and Cons of Everything": A Qualitative Descriptive Study Exploring Perspectives About Living Donor Kidney Transplantation From Parents of Chinese Canadian Pediatric Patients With Chronic Kidney Disease.

Background: As of 2021, more than 6000 children and youth in Canada were living with end-stage kidney disease (ESKD), for which kidney transplantation is considered the preferred treatment by health professionals. Research shows that living donor kidney transplantation (LDKT) has superior allograft and recipient survival compared to deceased donor kidney transplantation (DDKT). However, in a pediatric setting, the choice of LDKT or DDKT is a summative consideration of factors weighed carefully by the patient's family, health care team, and patient. Decision-making surrounding transplantation may be more complex for racial and ethnic minorities as culturally specific values and beliefs are interwoven within dominant understandings and concepts of health and accepted models of health care. For example, Chinese Canadians have an increased risk of ESKD, yet reduced access to LDKT compared to White patients, despite being the largest visible minority population in Canada. Objective: The objective of this qualitative study is to deepen our understandings of the decision-making process surrounding DDKT versus LDKT among parents of Chinese Canadian pediatric patients with chronic kidney disease (CKD). Design: Qualitative descriptive study design. Setting: The Nephrology Program at The Hospital for Sick Children in Toronto, Canada. Participants: Caregivers of Chinese Canadian patients with CKD, 18 years of age or older, and who spoke English, Cantonese, or Mandarin. Methods: One-on-one, semistructured interviews were conducted virtually, by a member of the research team and were audio-recorded and transcribed verbatim. Thematic analysis was used to explore participants' shared experience. Results: Seven interviews were conducted with 6 mothers and 1 father of 6 Chinese Canadian pediatric patients with CKD: 4 patients had undergone a kidney transplant, and 2 were not yet listed for transplant. Analysis of data highlighted that cultural influences affected whether parents shared with others about their child's illness and experience. The cultural understanding that it is inappropriate to burden others contributed to the creation of an isolating experience for participants. Cultural influences also impacted whether parents asked others to be a living donor as participants articulated this would place a physical burden on the living donor (e.g., potential risk to their health) and an emotional burden on the participant as they would be indebted to a willing donor. Ultimately, parents' decision to choose DDKT or LDKT for their patient-child was a result of evaluating both options carefully and within an understanding that the ideal treatment choice reflected what was best for all family members. Limitations: Findings reflect experiences of a small sample from a single recruitment site which may limit transferability. Conclusions: Parents in this study felt that they had access to the necessary evidence-based information to make an informed decision about the choice of DDKT versus LDKT for their child. Participant narratives described feeling isolated within cultural communities of family and friends and participants' suggestion of benefiting from increased support may guide future research directions. Practitioners can offer direct and indirect support to families, with recognition of the importance of cultural values and family-centered care on decision-making within families. Opportunities are needed for accessible, virtual social support platforms to increase parental feelings of culturally mediated peer support from parents who share similar experiences.

Contexte: En 2021, plus de 6000 enfants et jeunes au Canada vivaient avec une insuffisance rénale terminale (IRT), une affection pour laquelle la transplantation rénale est considérée comme le traitement préférentiel par les professionnels de la santé. La recherche montre que la transplantation d'un rein de donneur vivant (TRDV) présente des taux de survie du greffon et du receveur supérieurs à ceux de la transplantation d'un rein de donneur décédé (TRDD). En contexte pédiatrique, le choix entre la TRDV et la TRDD fait l'objet d'une évaluation sommative de facteurs soigneusement pesés par le patient, sa famille et l'équipe de soins. La prise de décision entourant la transplantation peut s'avérer encore plus complexe pour les personnes issues des minorités raciales et ethniques, car des valeurs et croyances spécifiques à la culture sont imbriquées dans les conceptions et concepts dominants de la santé et les modèles de soins acceptés. Les Canadiens d'origine chinoise, par exemple, présentent un risque accru d'IRT, mais leur accès à la TRDV est réduit par rapport aux patients d'origine caucasienne, bien qu'ils constituent la plus importante minorité visible dans la population Canadienne. Objectif: L'objectif de cette étude qualitative est d'approfondir notre compréhension du processus décisionnel entourant le choix entre la TRDD et la TRDV chez les parents de patients pédiatriques d'origine chinoise atteints d'insuffisance rénale chronique (IRC). Conception: Étude qualitative et descriptive. Cadre: Le program de néphrologie de l'Hospital for Sick Children de Toronto (Canada). Sujets: Des adultes proches aidants de patients Canadiens d'origine chinoise atteints d'IRC et parlant anglais, cantonais ou mandarin. Méthodologie: Des entrevues individuelles semi-structurées ont été menées en mode virtuel par un membre de l'équipe de recherche; les entrevues ont été enregistrées (audio) et transcrites textuellement. L'analyze thématique a été utilisée pour explorer l'expérience commune des participants. Résultats: Sept entrevues ont été menées auprès des parents (6 mères et un père) de 6 patients pédiatriques Canadiens d'origine chinoise atteints d'IRC: quatre avaient subi une greffe rénale, les deux autres n'étaient pas encore inscrits sur la liste pour une transplantation. L'analyze des données a révélé que les influences culturelles affectaient la façon dont les parents parlent de la maladie et de l'expérience de leur enfant avec d'autres personnes. La conception d'origine culturelle selon laquelle il n'est pas approprié d'accabler les autres a contribué à créer de l'isolement chez les participants. Les influences culturelles ont également interféré dans le fait de demander ou non à d'autres personnes d'être donneurs vivants; les participants ont expliqué que le don vivant imposait un fardeau physique au donneur vivant (p. ex., un risque pour sa santé) et un fardeau émotionnel au participant, car ceux-ci seraient redevables au donneur consentant. La décision des parents de choisir la TRDD ou la TRDV pour leur enfant aura finalement été le résultat d'une évaluation minutieuse des deux options, avec la perspective que le choix de traitement idéal reflétait ce qui était le mieux pour tous les membres de la famille. Limites: Ces résultats reflètent les expériences d'un faible échantillon de sujets provenant d'un seul centre, ce qui peut limiter la transférabilité. Conclusion: Les parents interrogés pour cette étude estimaient avoir eu accès aux informations factuelles nécessaires pour prendre une décision éclairée dans leur choix entre la TRDD et la TRDV pour leur enfant. Les récits des participants ont décrit leur sentiment d'isolement au sein des communautés culturelles de la famille et des amis; la suggestion des participants de bénéficier d'un soutien accru pourrait guider les orientations futures de la recherche. Les praticiens peuvent offrir un soutien direct et indirect aux familles en reconnaissant l'importance des valeurs culturelles et des soins centrés sur la famille dans la prise de décisions par les familles. Il est nécessaire de créer des plateformes de soutien social virtuelles et accessibles, afin que les parents aient le sentiment de bénéficier davantage du soutien culturel d'autres parents qui partagent des expériences similaires.

Navigating Living Kidney Donation and Transplantation Among South Asian Canadians: The ACTION Project.

RATIONALE & OBJECTIVE: South Asian (SA) Canadians with kidney failure have a 50%-77% lower likelihood of kidney transplant and are less likely to identify potential living donors (LDs). This study aimed to identify health system-, patient-, and community-level barriers and facilitators for accessing LD kidney transplantation in the SA community to inform the development of health system- and community-level interventions to address barriers. STUDY DESIGN: Qualitative study. SETTING & PARTICIPANTS: 20 SA recipients of an LD or deceased-donor kidney transplant, 10 SA LDs, and 41 general SA community members. ANALYTICAL APPROACH: In-depth multilingual interviews were conducted with recipients and LDs. Gender-, language-, and age-stratified focus groups were conducted with general SA community members. Summative content analysis was used to analyze the data. RESULTS: Hesitancy in approaching potential donors, fear about the health of potential LDs, information gaps, language barriers, and challenges evaluating out-of-country donors were highlighted as significant barriers by recipients, and financial concerns and information gaps were identified by donors. Cultural barriers in the SA community were highlighted by donors, recipients, and community members as critical factors when considering donation and transplant; women and elderly SA Canadians highlighted nuanced challenges. Participants reported generally a favorable perception of their health care teams, citing SA representation in the teams as important to providing culturally and linguistically sensitive care. LIMITATIONS: Limited geographic, race, and cultural representation and reliance on virtual data collection. CONCLUSIONS: This study highlights several culturally relevant barriers to donation and transplant that are potentially modifiable through patient-, health system-, and community-focused engagement and education.

Exploring barriers to living donor kidney transplant for African, Caribbean and Black communities in the Greater Toronto Area, Ontario: a qualitative study protocol.

INTRODUCTION: Living donor (LD) kidney transplant (KT) is the best treatment option for many patients with kidney failure as it improves quality of life and survival compared with dialysis and deceased donor KT. Unfortunately, LDKT is underused, especially among groups marginalised by race and ethnicity. African, Caribbean and Black (ACB) patients are 60%-70% less likely to receive LDKT in Canada compared with white patients. Research from the USA and the UK suggests that mistrust, cultural and generational norms, access, and affordability may contribute to inequities. To date, no Canadian studies have explored the beliefs and behaviours related to LDKT in ACB communities. Research approaches that use a critical, community-based approach can help illuminate broader structural factors that may shape individual beliefs and behaviours. In this qualitative study, we will investigate barriers to accessing LDKT in ACB communities in the Greater Toronto Area, to enhance our understanding of the perspectives and experiences of ACB community members, both with and without lived experience of chronic kidney disease (CKD). METHODS AND ANALYSIS: Hospital-based and community-based recruitment strategies will be used to recruit participants for focus groups and individual interviews. Participants will include self-identified ACB individuals with and without experiences of CKD and nephrology professionals. Collaboration with ACB community partners will facilitate a community-based research approach. Data will be analysed using reflexive thematic analysis and critical race theory. Findings will be revised based on feedback from ACB community partners. ETHICS AND DISSEMINATION: This study has been approved by the University Health Network Research Ethics Board UHN REB file #15-9775. Study findings will contribute to the codevelopment of culturally safe and responsive educational materials to raise awareness about CKD and its treatments and to improve equitable access to high-quality kidney care, including LDKT, for ACB patients.

Modulating Influence of State Anxiety on the Effect of Midazolam on Postsurgical Pain.

Anxiety contributes to postsurgical pain, and midazolam is frequently prescribed preoperatively. Conflicting results have been described concerning the impact of midazolam on pain. This study aims to evaluate the effect of systemic midazolam on pain after open inguinal hernia repair, clarifying its relationship with preoperative anxiety. A prospective observational cohort study was conducted in three Portuguese ambulatory units between September 2018 and March 2020. Variable doses of midazolam were administered. Postsurgical pain was evaluated up to three months after surgery. We enrolled 306 patients and analyzed 281 patients. The mean preoperative anxiety Numeric Rating Scale score was 4 (3) and the mean Surgical Fear Questionnaire score was 22 (16); the mean midazolam dose was 1.7 (1.1) mg with no correlation to preoperative anxiety scores. Pain ≥4 was present in 67% of patients 24 h after surgery and in 54% at seven days; at three months, 27% were classified as having chronic postsurgical pain. Preoperative anxiety correlated to pain severity at all time points. In multivariable regression, higher midazolam doses were associated with less pain during the first week, with no apparent effect on chronic pain. However, subgroup analyses uncovered an effect modification according to preoperative anxiety: the decrease in acute pain occurred in the low-anxiety patients with no effect on the high-anxiety group. Inversely, there was an increase in chronic postsurgical pain in the very anxious patients, without any effect on the low-anxiety group. Midazolam, generally used as an anxiolytic, might impact distinctively on pain depending on anxiety.

Incidence of Cirrhosis Among Recent Immigrants and Refugees to Ontario, Canada.

The epidemiology of cirrhosis among immigrants to North America has not been described. Using population-level data from Ontario, Canada, recent immigrant and refugees with incident cirrhosis were identified and stratified by World Bank region of origin and cirrhosis etiology. Incidence rates were described based on region of origin and etiology and compared with those in Canadian-born/long-term residents. A total of 25,054 immigrants/refugees were identified with rates of cirrhosis lower compared with those in Canadian-born/long-term residents for all etiologies except hepatitis B virus likely explained by the healthy immigrant effect. Nonalcoholic fatty liver disease was the most common etiology of cirrhosis among immigrants and refugees.

Portuguese version of Bern Illegitimates Task Scale: adaptation and evidence of validity.

BACKGROUND: A new element for job stress called Illegitimate Tasks has been investigated in recent years, along with stress as an offense to self-theory. Illegitimate tasks are those that are either needless or unrelated to the employee's role and can be categorized as unreasonable tasks and unnecessary tasks. METHODS: This study aimed to adapt the Bern Illegitimate Tasks Scale to Portuguese and provide evidence of its validity, through a confirmatory factor analysis with a sample of 472 workers from different sectors. RESULTS: The internal consistency, of the whole scale, measured by Cronbach's alpha, was 0.923 and 0.902 and 0.928 for the unnecessary tasks and, for unreasonable tasks subscales respectively. The confirmatory analysis supported a two-factor model and showed good to very good indexes of fit (CFI = 0.985; TLI = 0.997; SRMR = 0.035; RMSEA = 0.171). DISCUSSION: The Portuguese version of the Bern Illegitimate Tasks Scale presents very good psychometric properties for the intended measurement goals and can now be used in research with Portuguese speaking samples.

Tecnologia educativa sobre infecção do trato urinário para gestantes ribeirinhas: construção compartilhada / Educational technology on urinary tract infection for riverine pregnant women: shared construction / Tecnología educativa sobre infección urinaria para embarazadas ribereñas: construcción compartida

RESUMO Objetivo: construir, de maneira compartilhada, tecnologia educativa acerca da infecção do trato urinário para gestantes ribeirinhas na Atenção Primária à Saúde. Método: pesquisa metodológica qualitativa, desenvolvida com 24 gestantes cadastradas no pré-natal de uma Unidade de Saúde da Família na ilha do Combú, em Belém, Pará, Brasil. Os dados foram produzidos no período de fevereiro a agosto de 2021, por meio de entrevistas individuais e roda de conversa, e foram submetidos à análise de conteúdo, originando os temas para construir a tecnologia. Resultados: organizaram-se duas categorias temáticas, inerentes aos saberes de gestantes ribeirinhas, sobre infecção do trato urinário e suas práticas de higiene para prevenir esse agravo. As categorias subsidiaram a elaboração de um fôlder, escolhido por elas, agregando informações pertinentes, com ilustrações e linguagem de fácil entendimento. Conclusão: evidenciou-se que os conhecimentos das gestantes sobre o tema e as práticas de cuidado com a saúde precisam ser fortalecidos.

ABSTRACT Objective: to build, in a shared way, an educational technology about urinary tract infection for riverine pregnant women in Primary Health Care. Method: qualitative methodological research, developed with 24 pregnant women enrolled in prenatal care at a Family Health Unit on the island of Combú, in Belém, Pará, Brazil. The data were produced in the period from February to August 2021, through individual interviews and conversation circle, and were submitted to content analysis, originating the themes to build the technology. Results: two thematic categories were organized, inherent to the knowledge of riverine pregnant women about urinary tract infection and their hygiene practices to prevent this grievance. The categories subsidized the elaboration of a folder, chosen by them, adding relevant information, with illustrations and easy-to-understand language. Conclusion: it was evidenced that the pregnant women's knowledge on the theme and health care practices need to be strengthened.

RESUMEN Objetivo: construir, de forma compartida, una tecnología educativa sobre infección urinaria para embarazadas ribereñas en Atención Primaria de Salud. Método: investigación metodológica cualitativa, desarrollada con 24 gestantes inscritas en el control prenatal en una Unidad de Salud de la Familia en la isla de Combú, en Belém, Pará, Brasil. Los datos fueron producidos en el período de febrero a agosto de 2021, a través de entrevistas individuales y círculo de conversación, y fueron sometidos a análisis de contenido, originando los temas para construir la tecnología. Resultados: se organizaron dos categorías temáticas, inherentes a los conocimientos de las embarazadas ribereñas, sobre la infección del trato urinario y sus prácticas de higiene para prevenir este agravio. Las categorías subvencionaron la elaboración de un folleto, elegido por ellos, que contiene información pertinente, con ilustraciones y lenguaje de fácil comprensión. Conclusión: se evidenció la necesidad de reforzar los conocimientos de las embarazadas sobre el tema y las prácticas de atención sanitaria.

Age-related tolerance to paraquat-induced parkinsonism in Drosophila melanogaster.

Paraquat (PQ) is a widely used herbicide that can cross the dopaminergic neuronal membrane, accumulate in mitochondria and damage complex I of the electron transport chain, leading to neuronal death. In Drosophila melanogaster, PQ exposure leads to the development of parkinsonism and is a classical model for studying Parkinson's Disease (PD). Muscle mitochondrial dysfunction, affecting survival and locomotion, is described in familial PD in D. melanogaster mutants. However, no study has shown the effects of PQ-induced parkinsonism in D. melanogaster regarding muscle ultrastructure and locomotor behavior at different ages. Thus, we evaluated survival, locomotion, and morphological parameters of mitochondria and myofibrils using transmission electron microscopy in 2 and 15-day-old D. melanogaster, treated with different PQ doses: control, 10, 50, 100, 150, and 200 mM. PQ100mM presented 100% lethality in 15-day-old D. melanogaster, while in 2-day-old animals PQ150mM produced 20% lethality. Bradykinesia was only observed in 15-day-old D. melanogaster treated with PQ10 mM and PQ50 mM. However, these results are unlikely to be associated with changes to morphology. Taken together, our data indicate pathophysiological differences between PQ-induced parkinsonism and familial parkinsonism in D. melanogaster (resultant from gene mutations), demonstrating for the first time a differential susceptibility to PQ in two developmental stages.

Genomic, biochemical, and phylogenetic evaluation of bacteria isolated from deep-sea sediment harboring methane hydrates.

Over half of the organic carbon on Earth's surface is trapped in marine sediment as methane hydrates. Ocean warming causes hydrate dissociation and methane leakage to the water column, rendering the characterization of microbes from hydrate depositions a pressing matter. Through genomic, phylogenetic, and biochemical assays, we characterize the first microorganisms isolated from the Rio Grande Cone (Brazil), reservoir responsible for massive methane releases to the water column. From sediment harboring rich benthic communities, we obtained 43 strains of Brevibacillus sp., Paenibacillus sp. and groups of Bacillus sp. Methane-enriched samples yielded strains of the Pseudomonas fluorescens complex, exhibiting fluorescent siderophore production and broad multi-carbon catabolism. Genomic characterization of a novel Pseudomonas sp. strain indicated 32 genes not identified in the closest related type-species, including proteins involved with mercury resistance. Our results provide phylogenetic and genomic insights on the first bacterial isolates retrieved from a poorly explored region of the South Atlantic Ocean.

Association between social determinants of health and rates of liver transplantation in individuals with cirrhosis.

BACKGROUND AND AIMS: This study evaluated the association between neighborhood-level social determinants of health (SDOH) and liver transplantation (LT) among patients with cirrhosis who have universal access to health care. APPROACH AND RESULTS: This was a retrospective population-based cohort study from 2000-2019 using administrative health care data from Ontario, Canada. Adults aged 18-70 years with newly decompensated cirrhosis and/or HCC were identified using validated coding. The associations between five neighborhood level SDOH quintiles and LT were assessed with multivariate Fine-Gray competing risks regression to generate subdistribution HRs (sHRs) where death competes with LT. Overall, n = 38,719 individuals formed the cohort (median age 57 years, 67% male), and n = 2788 (7%) received LT after a median of 23 months (interquartile range 3-68). Due to an interaction, results were stratified by sex. After multivariable regression and comparing those in the lowest versus highest quintiles, individuals living in the most materially resource-deprived areas (female sHR, 0.61; 95% CI, 0.49-0.76; male sHR, 0.55; 95% CI, 0.48-0.64), most residentially unstable neighborhoods (female sHR, 0.61; 95% CI, 0.49-0.75; male sHR, 0.56; 95% CI, 0.49-0.65), and lowest-income neighborhoods (female sHR, 0.57; 95% CI, 0.46-0.7; male sHR, 0.58; 95% CI, 0.50-0.67) had ~40% reduced subhazard for LT (p < 0.01 for all). No associations were found between neighborhoods with the most diverse immigrant or racial minority populations or age and labor force quintiles and LT. CONCLUSIONS: This information highlights an urgent need to evaluate how SDOH influence rates of LT, with the overarching goal to develop strategies to overcome inequalities.

Citizenship fatigue as mediator between compulsory citizenship behavior and work-family conflict / Fadiga de cidadania como mediador entre comportamentos obrigatórios de cidadania e conflito trabalho-família / La fatiga de la ciudadanía como mediadora entre comportamientos obligatorios de ciudadanía y conflicto trabajo-familia

Framed by the conservation of resources theory, we investigated the mediating role of citizenship fatigue in the relationship between compulsory citizenship behavior and work-family conflict. Using a sample of 171 women (M = 41.16, SD = 10.18) working in facilities for the elderly in Portugal, we examined the direct and indirect relationship between compulsory citizenship behavior and work-family conflict. The data, collected using a self-reported questionnaire, shows that compulsory citizenship behavior influences work-family conflict with citizenship fatigue as a mediator. Theoretical and practical implications are discussed.

Apoiados na teoria da conservação de recursos, investigamos o papel mediador da fadiga de cidadania na relação entre os comportamentos obrigatórios de cidadania organizacional e o conflito trabalho-família. Com base numa amostra de 171 mulheres (M = 41,16; SD = 10,18) a trabalhar em instituições para idosos em Portugal, examinámos a relação direta e indireta entre comportamentos obrigatórios de cidadania organizacional e o conflito trabalho-família. Os dados recolhidos através de um questionário de autopreenchimento mostram que os comportamentos obrigatórios de cidadania influenciam o conflito trabalho-família e que esta relação é mediada pela fadiga de cidadania. Implicações teóricas e práticas são discutidas.

Con base en la teoría de la conservación de recursos, investigamos el papel mediador de la fatiga de la ciudadanía en la relación entre los comportamientos de ciudadanía organizacional y el conflicto trabajo-familia. A partir de una muestra de 171 mujeres (M = 41.16; SD = 10,18) que trabajan en instituciones para la tercera edad en Portugal, examinamos la relación directa e indirecta entre comportamientos obligatorios de ciudadanía organizacional y el conflicto trabajo-familia. El resultado muestra que los comportamientos obligatorios de ciudadanía influyen en el conflicto trabajo-familia y que esta relación está mediada por la fatiga ciudadana. Se discuten las implicaciones teóricas y prácticas.

Barriers to Accessing Kidney Transplantation Among Populations Marginalized by Race and Ethnicity in Canada: A Scoping Review Part 2-East Asian, South Asian, and African, Caribbean, and Black Canadians.

BACKGROUND: Kidney transplantation (KT), a treatment option for end-stage kidney disease (ESKD), is associated with longer survival and improved quality of life compared with dialysis. Inequities in access to KT, and specifically, living donor kidney transplantation (LDKT), have been documented in Canada, along various demographic dimensions. In this article, we review existing evidence about inequitable access to KT and LDKT for patients from communities marginalized by race and ethnicity in Canada. OBJECTIVE: To characterize the currently published data on rates of KT and LDKT among East Asian, South Asian, and African, Caribbean, and Black (ACB) Canadian communities and to answer the research question, "what factors may influence inequitable access to KT among East Asian, South Asian, and ACB Canadian communities?." ELIGIBILITY CRITERIA: Databases and gray literature were searched in June and November 2020 for full-text original research articles or gray literature resources addressing KT access or barriers in East Asian, South Asian, and ACB Canadian communities. A total of 25 articles were analyzed thematically. SOURCES OF EVIDENCE: Gray literature and CINAHL, OVID Medline, OVID Embase, and Cochrane databases. CHARTING METHODS: Literature characteristics were recorded and findings which described rates of and factors that influence access to KT were summarized in a narrative account. Key themes were subsequently identified and synthesized thematically in the review. RESULTS: East Asian, South Asian, and ACB communities in Canada face barriers in accessing culturally appropriate medical knowledge and care and experience inequitable access to KT. Potential barriers include gaps in knowledge about ESKD and KT, religious and spiritual concerns, stigma of ESKD and KT, health beliefs, social determinants of health, and experiences of systemic racism in health care. LIMITATIONS: This review included literature that used various methodologies and did not assess study quality. Data on ethnicity and race were not reported or defined in a standardized manner. The communities examined in this review are not homogeneous and views on organ donation and KT vary by individual. CONCLUSIONS: Our review has identified potential barriers for communities marginalized by race and ethnicity in accessing KT and LDKT. Further research is urgently needed to better understand the barriers and support needs of these communities, and to develop strategies to improve equitable access to LDKT for the growingly diverse population in Canada.

CONTEXTE: La transplantation rénale (TR), une des options de traitement de l'insuffisance rénale terminale (IRT), est associée à une meilleure qualité de vie et à une prolongation de la survie comparativement à la dialyse. Au Canada, les inégalités dans l'accès à la transplantation et plus particulièrement à la transplantation d'un rein provenant d'un donneur vivant (TRDV) ont été documentées selon diverses dimensions démographiques. Cet article fait état des données existantes sur les inégalités d'accès à la TR et à la TRDV des Canadiens issus de communautés marginalisées en raison de la race et de l'ethnicité. OBJECTIFS: L'objectif est bipartite: 1) caractériser les données publiées sur les taux de TR et de TRDV parmi les Canadiens des communautés noires originaires d'Afrique et des Caraïbes (NAC) et les Canadiens originaires de l'Asie de l'Est et de l'Asie du Sud; 2) répondre à la question de recherche « Quels facteurs pourraient mener à un accès inéquitable à la TR pour les Canadiens des communautés NAC et des communautés est-asiatiques et sud-asiatiques? ¼. CRITÈRES D'ADMISSIBILITÉ: Les bases de données et la littérature grise ont été passées en revue en juin et novembre 2020 à la recherche d'articles de recherche originaux (texte intégral) ou de ressources de la littérature grise traitant de l'accès à la TR ou des obstacles rencontrés par les Canadiens des communautés NAC et des communautés est-asiatiques et sud-asiatiques. En tout, 25 articles ont été analysés de façon thématique. SOURCES: La littérature grise et les bases de données CINAHL, OVID Medline, OVID Embase et Cochrane. MÉTHODOLOGIE: Les caractéristiques tirées de la littérature ont été consignées et les conclusions décrivant les taux de TR et les facteurs influençant l'accès ont été résumées sous forme de compte rendu. Les principaux thèmes ont été dégagés puis synthétisés thématiquement. RÉSULTATS: Les Canadiens des communautés NAC, est-asiatiques et sud-asiatiques se heurtent à divers obstacles dans l'accès à des informations et des soins médicaux adaptés à leur culture, ce qui entraîne un accès inéquitable à la TR. Le manque de connaissances concernant l'IRT et la TR, les préoccupations religieuses et spirituelles, la stigmatisation de l'IRT et de la TR, les croyances en matière de santé, les déterminants sociaux de la santé et les expériences de racisme systémique dans les soins de santé figurent parmi les possibles obstacles rencontrés. LIMITES: Cette revue inclut de la documentation dont la méthodologie varie, et la qualité des études retenues n'a pas été évaluée. Les données sur la race et l'ethnicité n'étaient pas consignées ou définies de façon normalisée. Les communautés examinées ne sont pas homogènes, les avis individuels sur le don d'organes et la TR pourraient varier. CONCLUSION: Cet examen de la portée a permis de cerner les obstacles dans l'accès à la TR et à la TRDV rencontrés par les patients des communautés marginalisées en raison de la race et de l'ethnicité. Il est urgent de poursuivre la recherche afin de mieux comprendre les obstacles et les besoins de soutien de ces communautés et pour élaborer des stratégies qui permettront un accès plus équitable à la TRDV à la population de plus en plus diversifiée du Canada.

Barriers to Accessing Kidney Transplantation Among Populations Marginalized by Race and Ethnicity in Canada: A Scoping Review Part 1-Indigenous Communities in Canada.

BACKGROUND: Kidney transplantation (KT), a treatment option for end-stage kidney disease (ESKD), is associated with longer survival and improved quality of life compared with dialysis. Inequities in access to KT, and specifically, living donor kidney transplantation (LDKT), have been documented in Canada along various demographic dimensions. In this article, we review existing evidence about inequitable access and barriers to KT and LDKT for patients from Indigenous communities in Canada. OBJECTIVE: To characterize the current state of literature on access to KT and LDKT among Indigenous communities in Canada and to answer the research question, "what factors may influence inequitable access to KT among Indigenous communities in Canada." ELIGIBILITY CRITERIA: Databases and gray literature were searched in June and November 2020 for full-text original research articles or gray literature resources addressing KT access or barriers in Indigenous communities in Canada. A total of 26 articles were analyzed thematically. SOURCES OF EVIDENCE: Gray literature and CINAHL, OVID Medline, OVID Embase, and Cochrane databases. CHARTING METHODS: Literature characteristics were recorded and findings which described rates of and factors that influence access to KT were summarized in a narrative account. Key themes were subsequently identified and synthesized thematically in the review. RESULTS: Indigenous communities in Canada experience various barriers in accessing culturally safe medical information and care, resulting in inequitable access to KT. Barriers include insufficient incorporation of Indigenous ways of knowing and being in information dissemination and care for ESKD and KT, spiritual concerns, health beliefs, logistical hurdles to accessing care, and systemic mistrust resulting from colonialism and systemic racism. LIMITATIONS: This review included studies that used various methodologies and did not assess study quality. Data on Indigenous status were not reported or defined in a standardized manner. Indigenous communities are not homogeneous and views on organ donation and KT vary by individual. CONCLUSIONS: Our scoping review has identified potential barriers that Indigenous communities may face in accessing KT and LDKT. Further research is urgently needed to better understand barriers and support needs and to develop strategies to improve equitable access to KT and LDKT for Indigenous populations in Canada.

CONTEXTE: La transplantation rénale (TR), une des options de traitement de l'insuffisance rénale terminale (IRT), est associée à une meilleure qualité de vie et à une prolongation de la survie comparativement à la dialyse. Au Canada, les inégalités dans l'accès à la transplantation et plus particulièrement à la transplantation d'un rein provenant d'un donneur vivant (TRDV) ont été documentées selon diverses dimensions démographiques. Cet article fait état des données existantes sur les inégalités d'accès à la TR et à la TRDV des patients canadiens d'origine autochtone. OBJECTIFS: Caractériser les données publiées sur les taux de TR et de TRDV chez les Canadiens d'origine autochtone et répondre à la question de recherche « Quels facteurs pourraient mener à un accès inéquitable à la TR pour les autochtones du Canada? ¼. CRITÈRES D'ADMISSIBILITÉ: Les bases de données et la littérature grise ont été passées en revue en juin et novembre 2020 à la recherche d'articles de recherche originaux (texte intégral) ou de ressources de la littérature grise traitant de l'accès à la TR ou des obstacles rencontrés par les autochtones au Canada. En tout, 26 articles ont été analysés de façon thématique. SOURCES: La littérature grise et les bases de données CINAHL, OVID Medline, OVID Embase et Cochrane. MÉTHODOLOGIE: Les caractéristiques tirées de la littérature ont été consignées et les conclusions décrivant les taux de TR et les facteurs influençant l'accès ont été résumées sous forme de compte rendu. Les principaux thèmes ont été dégagés puis synthétisés thématiquement. RÉSULTATS: Les communautés autochtones du Canada rencontrent divers obstacles dans l'accès à des informations et des soins médicaux adaptés à leur culture, ce qui entraîne un accès inéquitable à la TR. Parmi ces obstacles, on note l'intégration insuffisante des façons d'être et de faire autochtones dans la prestation de soins et dans la diffusion d'informations sur l'IRT et la TR, des préoccupations d'ordre spirituel, des croyances en matière de santé, des obstacles logistiques dans l'accès aux soins, et une méfiance bien intégrée résultant du colonialisme et du racisme systémique. LIMITATIONS: Cette revue inclut de la documentation dont la méthodologie varie, et la qualité des études retenues n'a pas été évaluée. Les données sur le statut d'Autochtone n'étaient pas consignées ou définies de façon normalisée. Les communautés autochtones ne sont pas homogènes, les avis individuels sur le don d'organes et la TR pourraient varier. CONCLUSIONS: Cet examen de la portée a permis de cerner les obstacles dans l'accès à la TR et à la TRDV rencontrés par les patients autochtones du Canada. Il est urgent de poursuivre la recherche afin de mieux comprendre les obstacles et les besoins de soutien, et pour élaborer des stratégies visant un meilleur accès à la TRDV pour les autochtones du Canada.

Does Angiotensin II Peak in Response to SARS-CoV-2?

Human infection by the SARS-CoV-2 is causing the current COVID-19 pandemic. With the growing numbers of cases and deaths, there is an urgent need to explore pathophysiological hypotheses in an attempt to better understand the factors determining the course of the disease. Here, we hypothesize that COVID-19 severity and its symptoms could be related to transmembrane and soluble Angiotensin-converting enzyme 2 (tACE2 and sACE2); Angiotensin II (ANG II); Angiotensin 1-7 (ANG 1-7) and angiotensin receptor 1 (AT1R) activation levels. Additionally, we hypothesize that an early peak in ANG II and ADAM-17 might represent a physiological attempt to reduce viral infection via tACE2. This viewpoint presents: (1) a brief introduction regarding the renin-angiotensin-aldosterone system (RAAS), detailing its receptors, molecular synthesis, and degradation routes; (2) a description of the proposed early changes in the RAAS in response to SARS-CoV-2 infection, including biological scenarios for the best and worst prognoses; and (3) the physiological pathways and reasoning for changes in the RAAS following SARS-CoV-2 infection.

Increases in dendritic spine density in BLA without metabolic changes in a rodent model of PTSD.

Imaging studies have shown abnormal amygdala function in patients with posttraumatic stress disorder (PTSD). In addition, alterations in synaptic plasticity have been associated with psychiatric disorders and previous reports have indicated alterations in the amygdala morphology, especially in basolateral (BLA) neurons, are associated with stress-related disorders. Since, some individuals exposed to a traumatic event develop PTSD, the goals of this study were to evaluate the early effects of PTSD on amygdala glucose metabolism and analyze the possible BLA dendritic spine plasticity in animals with different levels of behavioral response. We employed the inescapable footshock protocol as an experimental model of PTSD and the animals were classified according to the duration of their freezing behavior into distinct groups: "extreme behavioral response" (EBR) and "minimal behavioral response". We evaluated the amygdala glucose metabolism at baseline (before the stress protocol) and immediately after the situational reminder using the microPET and the radiopharmaceutical 18F-FDG. The BLA dendritic spines were analyzed according to their number, density, shape and morphometric parameters. Our results show the EBR animals exhibited longer freezing behavior and increased proximal dendritic spines density in the BLA neurons. Neither the amygdaloid glucose metabolism, the types of dendritic spines nor their morphometric parameters showed statistically significant differences. The extreme behavior response induced by this PTSD protocol produces an early increase in BLA spine density, which is unassociated with either additional changes in the shape of spines or metabolic changes in the whole amygdala of Wistar rats.

Selective brain neuronal and glial losses without changes in GFAP immunoreactivity: Young versus mature adult Wistar rats.

Normal ageing results in brain selective neuronal and glial losses. In the present study we analyze neuronal and glial changes in Wistar rats at two different ages, 45 days (young) and 420 days (mature adult), using Nissl staining and glial fibrillary acidic protein (GFAP) immunohistochemistry associated to the Sholl analysis. Comparing mature adults with young rats we noted the former present a decrease in neuronal density in the cerebral cortex, corpus callosum, pyriform cortex, L.D.D.M., L.D.V.L., central medial thalamic nucleus and zona incerta. A decrease in glial density was found in the dorsomedial and ventromedial hypothalamic nuclei. Additionally, the neuron/glia ratio was reduced in the central medial thalamic nucleus and increased in the habenula. No changes were found in the neuronal and glial densities or neuron/glia ratio in the other studied regions. The number of astrocytic primary processes and the number of intersections counted in the Sholl analysis presented no significant difference in any of the studied regions. Overall, neither GFAP positive astrocytic density nor GFAP immunoreactivity showed alteration.

Sound Exposure of Secondary School Music Students During Individual Study.

Music students can be exposed to high sound pressure levels (SPLs) during classes, which can result in hearing damage. However, individual study can also boost their exposure. This short presentation aims to describe the SPLs to which secondary school music students are exposed during individual study, as well as the circumstances in which practice is carried out. The study involved 16 young music students, aged 12-15 yrs old. SPLs were monitored during individual study at school and at the students' homes. Measurements were performed throughout rehearsals over a 3-week period. The results show that music students are exposed to high SPLs during the individual study, with potential for it to increase, depending on the type and features of the rooms used for practice. Students were not entirely aware of the health risks related to exposure to high SPLs during individual practice, and hearing protection was never used by them. These findings denote that hearing conservation programs targeting music students should also focus on the risks to which they are exposed during individual study in different settings.

Self-disinfecting surfaces and infection control.

According to World Health Organization, every year in the European Union, 4 million patients acquire a healthcare associated infection. Even though some microorganisms represent no threat to healthy people, hospitals harbor different levels of immunocompetent individuals, namely patients receiving immunosuppressors, with previous infections, or those with extremes of age (young children and elderly), requiring the implementation of effective control measures. Public spaces have also been found an important source of infectious disease outbreaks due to poor or none infection control measures applied. In both places, surfaces play a major role on microorganisms' propagation, yet they are very often neglected, with very few guidelines about efficient cleaning measures and microbiological assessment available. To overcome surface contamination problems, new strategies are being designed to limit the microorganisms' ability to survive over surfaces and materials. Surface modification and/or functionalization to prevent contamination is a hot-topic of research and several different approaches have been developed lately. Surfaces with anti-adhesive properties, with incorporated antimicrobial substances or modified with biological active metals are some of the strategies recently proposed. This review intends to summarize the problems associated with contaminated surfaces and their importance on infection spreading, and to present some of the strategies developed to prevent this public health problem, namely some already being commercialized.

The interactive effect of occupational noise on attention and short-term memory: A pilot study.

INTRODUCTION: Human performance is influenced by several job-related factors and workplace conditions, including occupational noise. This influence can occur at sound pressure levels lower than the ones that cause physiological damage, such as hearing loss, being mediated by the noise characteristics. However, studies concerning this issue are still scarce. Study. AIM: The aim of this study was to investigate the effects of three noise conditions on attention and short-term memory: standard condition (C1), environmental noise without alarm sounds (C2), and environmental noise with alarm sounds (C3). MATERIALS AND METHODS: First, noise levels were measured during a normal workweek in a fast food establishment. Second, an experiment was designed to simulate the noise normally prevailing in the workplace. The noise levels were fixed at 45 ± 0.3 dB(A) (C1), 60 ± 0.4 dB(A) (C2), and 68 ± 0.4 dB(A) (C3). The influence of noise on participants' attention and short-term memory was assessed with the following test battery: serial recall, response inhibition, and Stroop interference. Because annoyance, stress, and discomfort perceptions during the tests can influence results, visual analog scales to assess these variables were applied in the end of each trial. Fifteen undergraduate students were included in this pilot study (20-23 years; M = 21.6; SD = 0.8; all female). RESULTS: The results demonstrated that participants' performance during the tests was lower in C3, that is, the number of errors was higher and the reaction time longer. Participants also experienced higher levels of discomfort, stress, and annoyance perceptions in this condition. However, task performance was not found to be influenced by these perceptions. CONCLUSION: This study provided important insights about the different noise conditions that workers are exposed in a fast food restaurant, and how they influence participants' performance. Further research should involve workers, exploring how these conditions are implicated in their performance in the field.

[Foodbourne Botulism: A Forgotten Disease]. / Botulismo Alimentar: Uma Doença Esquecida.

Botulism is a serious illness caused by exposure to botulinum toxin. It is manifested by flaccid, paralysis, symmetric and in descending pattern affecting cranial and peripheral nerves. Given the frequent need for invasive mechanical ventilation, these patients should be approached in an intensive care setting. Treatment with anti-botulinum toxin is the only effective treatment. The authors present the case of a 64-year-old patient, with vomiting and vertigo, evolution to diplopia, dysphagia and flaccid, muscle paralysis, installation after ingestion of canning homemade. From the etiologica, we highlight the electroneuromyogram study with a pre-synaptic lesion compatible with the botulism hypothesis. Progressive improvement of the deficits after administration of anti-botulinum toxin. A brief theoretical review is made of a serious, potentially fatal and infrequent pathology in our country.

O botulismo é uma doença grave causada pela exposição a toxina botulínica. Manifesta-se por paralisia flácida, simétrica e em padrão descendente que afeta nervos cranianos e periféricos. Dada a frequente necessidade de ventilação mecânica invasiva, estes doentes devem ser abordados em ambiente de cuidados intensivos. O tratamento com soro anti-toxina botulínica é o único eficaz. Os autores apresentam o caso de uma doente de 64 anos, com quadro de vómitos e vertigem, com evolução para diplopia, disfagia e parésia muscular flácida, simétrica e descendente, com instalação após ingestão de conserva alimentar de fabrico caseiro. Do estudo etiológico salienta-se eletroneuromiograma com lesão pré sináptica compatível com hipótese de botulismo. Melhoria progressiva dos défices após administração de soro anti-toxina botulínica. Faz-se uma breve revisão teórica de uma patologia grave, potencialmente fatal e pouco frequente no nosso país.