COVID-19: Distance learning to empower educators and health assistants in rural areas.

BACKGROUND: Educators and health assistants can act as key players in controlling the pandemic. In general, they are respected by the community, especially in rural areas, and can help guide and raise the population's awareness of preventive measures. The objective of this paper is to evaluate the results in knowledge progress of an e-learning course offered to educators and health assistants by a public university and to analyze the profile and satisfaction of the participants. MATERIALS AND METHODS: A single group pre- and post-test design based on a questionnaire, interventional, study was conducted in the period from April 20th to June 20th. All participants of the course answered sociodemographic and satisfaction questionnaire and a pre- and post-test. Data were descriptively arranged and regarding the distribution and comparison of means and frequency, paired t-test for group comparisons. P < 0.05 was statistically significant. Data were collected from the Moodle® teaching platform, without identifying the participants. RESULTS: A total of 674 participants were enrolled in the five groups, and 583 concluded the course (86.5%). The reasons for those who did not access the entire course (n = 47) were: Lack of time, difficulty in accessing the internet, and lack of experience with distance learning courses. On the evaluation of the course platform, from the tutors in general and the degree of satisfaction in several questions, participants marked maximum grades. The comparison between pre- and post-proficiency scores showed increased proficiency of the enrolled groups (P < 0.0001). CONCLUSIONS: The course contributed to the training of health assistants and educators, preparing them to act in a participatory way in the prevention and control of the pandemic. The course was well evaluated and there was a progression of knowledge by the participants.

Acute kidney injury in pediatrics: an overview focusing on pathophysiology.

Acute kidney injury (AKI) is defined as an abrupt decline in glomerular filtration rate, with increased serum creatinine and nitrogenous waste products due to several possible etiologies. Incidence in the pediatric population is estimated to be 3.9 per 1,000 hospitalizations, and prevalence among children admitted to intensive care units is 26.9%. Despite being a condition with important incidence and morbimortality, further evidence on pathophysiology and management among the pediatric population is still lacking. This narrative review aimed to summarize and discuss current data on AKI pathophysiology in the pediatric population, considering all the physiological particularities of this age range and common etiologies. Additionally, we reported current diagnostic tools, novel biomarkers, and newly proposed medications that have been studied with the aim of early diagnosis and appropriate treatment of AKI in the future.

2020 update on the renin-angiotensin-aldosterone system in pediatric kidney disease and its interactions with coronavirus.

The last decade was crucial for our understanding of the renin-angiotensin-aldosterone system (RAAS) as a two-axis, counter-regulatory system, divided into the classical axis, formed by angiotensin-converting enzyme (ACE), angiotensin II (Ang II), and the angiotensin type 1 receptor (AT1R), and the alternative axis comprising angiotensin-converting enzyme 2 (ACE2), angiotensin-(1-7) (Ang-(1-7)), and the Mas receptor. Breakthrough discoveries also took place, with other RAAS endopeptides being described, including alamandine and angiotensin A. In this review, we characterize the two RAAS axes and the role of their components in pediatric kidney diseases, including childhood hypertension (HTN), pediatric glomerular diseases, congenital abnormalities of the kidney and urinary tract (CAKUT), and chronic kidney disease (CKD). We also present recent findings on potential interactions between the novel coronavirus, SARS-CoV-2, and components of the RAAS, as well as potential implications of coronavirus disease 2019 (COVID-19) for pediatric kidney diseases.

Covid-19: e-Learning as a tool for improving the knowledge / Covid-19: e-learning como ferramenta para melhoria do conhecimento

Abstract: Introduction: Preventing and fighting COVID-19 are of the utmost importance. In this context, the importance of using telemedicine tools has grown, including teleconsultations, epidemiological telemonitoring, remote diagnosis, support, and training of health professionals. Objective: This article aims to report the results of a distance-training course on SARS-CoV-2 and COVID-19. We analyze the course adherence, the students' profile, pre, and post-test proficiency index and satisfaction with the course. Methods: This is a cross-sectional study that evaluated data from the course on SARS-CoV-2 and COVID-19. The data were analyzed in terms of distribution and comparisons of means and frequencies. A paired t-test was used to compare the pre and post-test grades. A p-value <0.05 was considered significant. Data were collected from the Moodle teaching platform, without identifying the participants. Results: From March 23 to May 14, the course was offered to 1,008 medical students and health care providers. Most were from the state of Minas Gerais, some from other Brazilian states, and Mozambique. The majority completed the course, with an 89.8% adherence. The evaluations related to the course, the tutors, the degree of satisfaction, and the security for the professional performance after the course obtained maximum scores. The comparison between the pre and post grades showed proficiency gain (p<0.0001). Conclusion: The course has contributed to the training of medical students and health professionals from Brazil and Mozambique. The organizing committee was able to prepare students and provide knowledge to professionals with difficulty to access good technical and evidence-based information. After the training, the students were selected to work on university projects aiming at supporting city halls, health departments, and the community.

Resumo: Introdução: A prevenção e o combate da Covid-19 são de extrema importância. Nesse contexto, a importância do uso de ferramentas de telemedicina tem crescido, incluindo teleconsultas, telemonitoramento epidemiológico, diagnóstico remoto, suporte e treinamento de profissionais de saúde. Objetivo: Este trabalho tem como objetivo relatar os resultados de um curso de treinamento a distância que abordou aspectos relacionados ao Sars-CoV-2 e à Covid-19. Método: Analisaram-se os seguintes aspectos: adesão ao curso, perfil dos alunos, índice de proficiência pré e pós-teste e satisfação com o curso.Trata-se de um estudo transversal que avaliou os dados do curso sobre o Sars-CoV-2 e a Covid-19. Os dados foram analisados em termos de distribuição e comparação de médias e frequências. Um teste t pareado foi usado para comparar as notas do pré e do pós-teste. O valor de p < 0,05 foi considerado significativo.Coletaram-se os dados na plataforma de ensino Moodle, sem identificação dos participantes. Resultado: De 23 de março a 14 de maio de 2020, o curso foi oferecido a 1.008 estudantes de Medicina e profissionais de saúde. A maioria era de Minas Gerais, alguns de outros estados brasileiros e de Moçambique. A maioria concluiu o curso com 89,8% de adesão. As avaliações referentes ao curso, aos tutores, ao grau de satisfação e à segurança para o desempenho profissional após o curso obtiveram pontuação máxima. A comparação entre as séries pré e pós-teste mostrou ganho de proficiência (p < 0,0001). Conclusão: O curso tem contribuído para a formação de estudantes de Medicina e profissionais de saúde do Brasil e de Moçambique. A comissão organizadora conseguiu capacitar alunos e profissionais de saúde com dificuldade de acesso a boas informações técnicas e baseadas em evidências. Após a capacitação, os alunos foram selecionados para atuar em projetos universitários com o objetivo de apoiar prefeituras, secretarias de saúde e comunidade.

O PERFIL DO MÉDICO APROVADO NA RESIDÊNCIA MÉDICA DE MINAS GERAIS EM 2019 / Minas Gerais 2019's medical residency: The approved physician's profile

Introdução: Os processos seletivos de residência médica (PSRM) estão progressivamente mais concorridos e carecem de análises do seu perfil de candidatos aprovados. Objetivos: Analisar o desempenho e perfil do aprovado no Processo Seletivo de Residência Médica do Estado de Minas Gerais (PSU-MG) nas quatro especialidades médicas mais comuns no Brasil. Métodos: Analisamos candidatos aprovados ou selecionados nos três hospitais de Belo Horizonte com maior oferta de vagas em Cirurgia Geral (CIR), Clínica Médica (CLM), Ginecologia e Obstetrícia (GOB) e Pediatria (PED). Utilizamos a publicação da primeira chamada do PSU-MG 2019 e a Plataforma Lattes para análise do currículo quanto à especialidade e hospital pretendidos, notas de prova e de currículo, sexo e instituições cursadas. Resultados: Foram analisados 1087 candidatos. Candidatos de escolas médicas públicas apresentaram maiores medianas de notas de prova e de currículo (63,9 e 8,42 versus 60,3 e 7,00 respectivamente; p<0,05), foram mais aprovados no PSU-MG (p < 0,05) e tiveram mais inscrições em CIR e CLM e menos em PED (p<0,05) do que alunos de escolas médicas pagas. Não houve associação significativa entre o sexo e aprovação no concurso, porém, encontrouse associação positiva entre sexo feminino e as especialidades de GOB e PED, e sexo masculino e CIR e CLM. Conclusões: A relação Candidato/vaga e a escola de graduação parecem influenciar o desempenho dos candidatos em PSRM. Estudos adicionais e mais amplos são necessários para elucidação dos fatores que interferem no desempenho nos PSRM.

Introduction: Medical Residency Selection Processes (MRSP) are increasingly competitive and lack of objective analysis concerning approved candidates. Objective: Analyze the profile of physicians approved in the largest MRSP in the state of Minas Gerais - Brazil in 2019 (PSU-MG) in each of the four most common Brazilian specialties. Methods: Our sample consisted of approved or selected candidates for the hospitals in Belo Horizonte which offered more vacancies in the Internal Medicine (INTMED), Gynecology and Obstetrics (OB/ GYN), Pediatrics (PEDS) and General Surgery (GS) specialties in the PSU-MG. We used the PSU-MG approved candidates list and the Lattes curriculum for data regarding specialty, selected hospital, test and curriculum grades, gender, and attended institutions. Results: A total of 1087 candidates were analyzed. Physicians who graduated at public medical colleges had higher test and curriculum scores medians (63.9 and 8.42 versus 60.3 and 7.00 respectively; p<0.05), were more approved at the MRSP (p<0.05) and were more enrolled in GS and INTMED (p<0.05) and less enrolled in PEDS than candidates from private schools. There was no significant association between gender and approval. Female candidates were more enrolled in OB/GYN and PEDS, and male candidates in GS and INTMED. Conclusion: Both the ratio between candidate and vacancy for medical residency and the medical school graduation funding type seem to influence the approved candidate's performance on MRSP. Further studies are needed to better elucidate factors that interfere on the performance in MRSP.

Insights on SARS-CoV-2 Molecular Interactions With the Renin-Angiotensin System.

The emergence of SARS-CoV-2/human/Wuhan/X1/2019, a virus belonging to the species Severe acute respiratory syndrome-related coronavirus, and the recognition of Coronavirus Disease 2019 (COVID-19) as a pandemic have highly increased the scientific research regarding the pathogenesis of COVID-19. The Renin Angiotensin System (RAS) seems to be involved in COVID-19 natural course, since studies suggest the membrane-bound Angiotensin-converting enzyme 2 (ACE2) works as SARS-CoV-2 cellular receptor. Besides the efforts of the scientific community to understand the virus' molecular interactions with human cells, few studies summarize what has been so far discovered about SARS-CoV-2 signaling mechanisms and its interactions with RAS molecules. This review aims to discuss possible SARS-CoV-2 intracellular signaling pathways, cell entry mechanism and the possible consequences of the interaction with RAS components, including Angiotensin II (Ang II), Angiotensin-(1-7) [Ang-(1-7)], Angiotensin-converting enzyme (ACE), ACE2, Angiotensin II receptor type-1 (AT1), and Mas Receptor. We also discuss ongoing clinical trials and treatment based on RAS cascade intervention. Data were obtained independently by the two authors who carried out a search in the PubMed, Embase, LILACS, Cochrane, Scopus, SciELO and the National Institute of Health databases using Medical Subject Heading terms as "SARS-CoV-2," "COVID-19," "Renin Angiotensin System," "ACE2," "Angiotensin II," "Angiotensin-(1-7)," and "AT1 receptor." Similarly to other members of Coronaviridae family, the molecular interactions between the pathogen and the membrane-bound ACE2 are based on the cleavage of the spike glycoprotein (S) in two subunits. Following the binding of the S1 receptor-binding domain (RBD) to ACE2, transmembrane protease/serine subfamily 2 (TMPRSS2) cleaves the S2 domain to facilitate membrane fusion. It is very likely that SARS-CoV-2 cell entry results in downregulation of membrane-bound ACE2, an enzyme that converts Ang II into Ang-(1-7). This mechanism can result in lung injury and vasoconstriction. In addition, Ang II activates pro-inflammatory cascades when binding to the AT1 Receptor. On the other hand, Ang-(1-7) promotes anti-inflammatory effects through its interactions with the Mas Receptor. These molecules might be possible therapeutic targets for treating COVID-19. Thus, the understanding of SARS-CoV-2 intracellular pathways and interactions with the RAS may clarify COVID-19 physiopathology and open perspectives for new treatments and strategies.

ACE2/Angiotensin-(1-7)/Mas Receptor Axis in Human Cancer: Potential Role for Pediatric Tumors.

BACKGROUND: Pediatric tumors remain the highest cause of death in developed countries. Research on novel therapeutic strategies with lesser side effects is of utmost importance. In this scenario, the role of Renin-Angiotensin System (RAS) axes, the classical one formed by angiotensinconverting enzyme (ACE), Angiotensin II and AT1 receptor and the alternative axis composed by ACE2, Angiotensin-(1-7) and Mas receptor, have been investigated in cancer. OBJECTIVE: This review aimed to summarize the pathophysiological role of RAS in cancer, evidence for anti-tumor effects of ACE2/Angiotensin-(1-7)/Mas receptor axis and future therapeutic perspectives for pediatric cancer. METHODS: Pubmed, Scopus and Scielo were searched in regard to RAS molecules in human cancer and pediatric patients. The search terms were "RAS", "ACE", "Angiotensin-(1-7)", "ACE2", "Angiotensin II", "AT1 receptor", "Mas receptor", "Pediatric", "Cancer". RESULTS: Experimental studies have shown that Angiotensin-(1-7) inhibits the growth of tumor cells and reduces local inflammation and angiogenesis in several types of cancer. Clinical trials with Angiotensin-( 1-7) or TXA127, a pharmaceutical grade formulation of the naturally occurring peptide, have reported promising findings, but not enough to recommend medical use in human cancer. In regard to pediatric cancer, only three articles that marginally investigated RAS components were found and none of them evaluated molecules of the alternative RAS axis. CONCLUSION: Despite the potential applicability of Angiotensin-(1-7) in pediatric tumors, the role of this molecule was never tested. Further clinical trials are necessary, also including pediatric patients, to confirm safety and efficiency and to define therapeutic targets.