Lambendo a Cidade

Os cartazes em forma de lambe resignificam as ruínas da cidade, denunciam o ritmo intenso dos acontecimentos, tocam os corações e mentes dos transeuntes e podem até mesmo refletir as batalhas políticas e ideológicas por espaço e poder dos ocupantes da cidade. Lambendo a cidade provoca o espectador a pensar a sua relação com o urbano e o convida a agir através desta ferramenta, o lambe-lambe

Association of Clonal Hematopoiesis of Indeterminate Potential with Inflammatory Gene Expression in Patients with COPD

Chronic obstructive pulmonary disease (COPD) is a disease with an inflammatory pheno type with increasing prevalence in the elderly. Expanded population of mutant blood cells carrying somatic mutations is termed clonal hematopoiesis of indeterminate potential (CHIP). The associ ation between CHIP and COPD and its relevant effects on DNA methylation in aging are mainly unknown. Analyzing the deep-targeted amplicon sequencing from 125 COPD patients, we found enhanced incidence of CHIP mutations (~20%) with a predominance of DNMT3A CHIP-mediated hypomethylation of Phospholipase D Family Member 5 (PLD5), which in turn is positively correlated with increased levels of glycerol phosphocholine, pro-inflammatory cytokines, and deteriorating lung function

Rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART): Study protocol for a randomized controlled trial

Background: Acute respiratory distress syndrome (ARDS) is associated with high in-hospital mortality. Alveolar recruitment followed by ventilation at optimal titrated PEEP may reduce ventilator-induced lung injury and improve oxygenation in patients with ARDS, but the effects on mortality and other clinical outcomes remain unknown. This article reports the rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART). Methods/Design: ART is a pragmatic, multicenter, randomized (concealed), controlled trial, which aims to determine if maximum stepwise alveolar recruitment associated with PEEP titration is able to increase 28-day survival in patients with ARDS compared to conventional treatment (ARDSNet strategy). We will enroll adult patients with ARDS of less than 72 h duration. The intervention group will receive an alveolar recruitment maneuver, with stepwise increases of PEEP achieving 45 cmH(2)O and peak pressure of 60 cmH2O, followed by ventilation with optimal PEEP titrated according to the static compliance of the respiratory system. In the control group, mechanical ventilation will follow a conventional protocol (ARDSNet). In both groups, we will use controlled volume mode with low tidal volumes (4 to 6 mL/kg of predicted body weight) and targeting plateau pressure <= 30 cmH2O. The primary outcome is 28-day survival, and the secondary outcomes are: length of ICU stay; length of hospital stay; pneumothorax requiring chest tube during first 7 days; barotrauma during first 7 days; mechanical ventilation-free days from days 1 to 28; ICU, in-hospital, and 6-month survival. ART is an event-guided trial planned to last until 520 events (deaths within 28 days) are observed. These events allow detection of a hazard ratio of 0.75, with 90% power and two-tailed type I error of 5%. All analysis will follow the intention-to-treat principle. Discussion: If the ART strategy with maximum recruitment and PEEP titration improves 28-day survival, this will represent a notable advance to the care of ARDS patients. Conversely, if the ART strategy is similar or inferior to the current evidence-based strategy (ARDSNet), this should also change current practice as many institutions routinely employ recruitment maneuvers and set PEEP levels according to some titration method.Hospital do Coracao (HCor) as part of the Program 'Hospitais de Excelencia a Servico do SUS (PROADI-SUS)'Brazilian Ministry of Healt

Lambendo a Cidade

Os cartazes em forma de lambe resignificam as ruínas da cidade, denunciam o ritmo intenso dos acontecimentos, tocam os corações e mentes dos transeuntes e podem até mesmo refletir as batalhas políticas e ideológicas por espaço e poder dos ocupantes da cidade. Lambendo a cidade provoca o espectador a pensar a sua relação com o urbano e o convida a agir através desta ferramenta, o lambe-lambe

Ecophysiological Features Shape the Distribution of Prophages and CRISPR in Sulfate Reducing Prokaryotes

Sulfate reducing prokaryotes (SRP) are a phylogenetically and physiologically diverse group of microorganisms that use sulfate as an electron acceptor. SRP have long been recognized as key players of the carbon and sulfur cycles, and more recently, they have been identified to play a relevant role as part of syntrophic and symbiotic relations and the human microbiome. Despite their environmental relevance, there is a poor understanding about the prevalence of prophages and CRISPR arrays and how their distribution and dynamic affect the ecological role of SRP. We addressed this question by analyzing the results of a comprehensive survey of prophages and CRISPR in a total of 91 genomes of SRP with several genotypic, phenotypic, and physiological traits, including genome size, cell volume, minimum doubling time, cell wall, and habitat, among others. Our analysis discovered 81 prophages in 51 strains, representing the 56% of the total evaluated strains. Prophages are non-uniformly distributed across the SRP phylogeny, where prophage-rich lineages belonged to Desulfovibrionaceae and Peptococcaceae. Furthermore, our study found 160 CRISPR arrays in 71 SRP, which is more abundant and widely spread than previously expected. Although there is no correlation between presence and abundance of prophages and CRISPR arrays at the strain level, our analysis showed that there is a directly proportional relation between cellular volumes and number of prophages per cell. This result suggests that there is an additional selective pressure for strains with smaller cells to get rid of foreign DNA, such as prophages, but not CRISPR, due to less availability of cellular resources. Analysis of the prophage genes encoding viral structural proteins reported that 44% of SRP prophages are classified as Myoviridae, and comparative analysis showed high level of homology, but not synteny, among prophages belonging to the Family Desulfovibrionaceae. We further recovered viral-like particles and structures that resemble outer membrane vesicles from D. vulgaris str. Hildenborough. The results of this study improved the current understanding of dynamic interactions between prophages and CRISPR with their hosts in both cultured and hitherto-uncultured SRP strains, and how their distribution affects the microbial community dynamics in several sulfidogenic natural and engineered environments

A Prevalência de Estresse em uma Amostra de Estudantes do Curso de Medicina da Universidade Federal do Rio Grande do Sul

Introduction: Entering Medical School represents a transition toward a new lifestyle and higher curricular standards. Stress can influence academic performance and decision-making skills and establish a proper physician-patient relationship. This study examined the prevalence of stress and associated factors in a sample of medical students of Universidade Federal do Rio Grande do Sul (UFRGS) using Lipp’s Adult Stress Symptoms Inventory (ASSI). Methods: This is a cross-sectional, uncontrolled study using a random sample (168 students). Instruments: ASSI, questionnaire with demographic data, use of alcohol and other substances and anxiety symptoms. Results: There was a prevalence rate of stress of 51.3% (95%CI 40.2-62.2), with higher prevalence of physical symptoms than psychological symptoms. From the sixth semester students had higher prevalence of stress (55.3%), with no statistically significant difference between semesters. Regular use of alcohol (43.6%) and stimulants was similar between students with and without stress (P = 0.63). Among students with stress, 40% reported having already experienced panic symptoms, while only 5.3% of those without stress reported such symptoms (P <0.001). Among students with stress, 90% reported presence of anxiety symptoms in the last 6 months, while such symptoms were present in only 39.5% of those without stress (P <0001). Conclusion: These findings suggest the need to investigate the causes of high prevalence of stress to propose preventive measures and/or to provide psychological support for students, providing better medical training.Introdução: O ingresso na Faculdade de Medicina representa uma transição a um novo estilo de vida e maior grau de exigência curricular. O estresse pode influenciar o desempenho acadêmico e as habilidades para tomar decisões e estabelecer uma adequada relação médico-paciente. O presente estudo avaliou a prevalência de estresse e fatores associados em uma amostra de estudantes da Faculdade de Medicina da Universidade Federal do Rio Grande do Sul (UFRGS) através do Inventário de Sintomas de Stress para Adultos de Lipp (ISLL). Métodos: Estudo transversal não controlado, amostra aleatória (168 alunos). Instrumentos: ISLL, questionário com dados demográficos, uso de álcool e outras substâncias e sintomas de ansiedade. Resultados: Encontrou-se uma prevalência de estresse de 51,3% (IC95% 40,2-62,2), com maior prevalência de sintomas físicos do que psíquicos. A partir do sexto semestre os alunos apresentaram maior prevalência de estresse (55,3%), sem diferença estatisticamente significativa entre os semestres. O uso regular de álcool (43,6%) e estimulantes foi semelhante entre os alunos com e sem estresse (P = 0,63). Entre os alunos com estresse, 40% afirmaram já ter experimentado sintomas de pânico, enquanto apenas 5,3% dos sem estresse referiram esses sintomas (P < 0,001). Entre os alunos com estresse, 90% relataram presença de sintomas de ansiedade nos últimos 6 meses, enquanto apenas 39,5% dos sem estresse o referiram (P < 0,001). Conclusão: Nossos achados apontam para a necessidade de investigar as causas da alta prevalência de estresse encontrada, a fim de propor medidas preventivas e/ou oferecer apoio psicológico para os estudantes, proporcionando uma melhor formação médica

Prevalence of stress in a sample of medical students of Universidade Federal do Rio Grande do Sul

Introdução: O ingresso na Faculdade de Medicina representa uma transição a um novo estilo de vida e maior grau de exigência curricular. O estresse pode influenciar o desempenho acadêmico e as habilidades para tomar decisões e estabelecer uma adequada relação médico-paciente. O presente estudo avaliou a prevalência de estresse e fatores associados em uma amostra de estudantes da Faculdade de Medicina da Universidade Federal do Rio Grande do Sul (UFRGS) através do Inventário de Sintomas de Stress para Adultos de Lipp (ISLL). Métodos: Estudo transversal não controlado, amostra aleatória (168 alunos). Instrumentos: ISLL, questionário com dados demográficos, uso de álcool e outras substâncias e sintomas de ansiedade. Resultados: Encontrou-se uma prevalência de estresse de 51,3% (IC95% 40,2-62,2), com maior prevalência de sintomas físicos do que psíquicos. A partir do sexto semestre os alunos apresentaram maior prevalência de estresse (55,3%), sem diferença estatisticamente significativa entre os semestres. O uso regular de álcool (43,6%) e estimulantes foi semelhante entre os alunos com e sem estresse (P = 0,63). Entre os alunos com estresse, 40% afirmaram já ter experimentado sintomas de pânico, enquanto apenas 5,3% dos sem estresse referiram esses sintomas (P <0,001). Entre os alunos com estresse, 90% relataram presença de sintomas de ansiedade nos últimos 6 meses, enquanto apenas 39,5% dos sem estresse o referiram (P < 0,001). Conclusão: Nossos achados apontam para a necessidade de investigar as causas da alta prevalência de estresse encontrada, a fim de propor medidas preventivas e/ou oferecer apoio psicológico para os estudantes, proporcionando uma melhor formação médica.Background: Entering Medical School represents a transition toward a new lifestyle and higher curricular standards. Stress can influence academic performance and decision-making skills and establish a proper physician-patient relationship. This study examined the prevalence of stress and associated factors in a sample of medical students of Universidade Federal do Rio Grande do Sul (UFRGS) using Lipp’s Adult Stress Symptoms Inventory (ASSI). Methods: This is a cross-sectional, uncontrolled study using a random sample (168 students). Instruments: ASSI, questionnaire with demographic data, use of alcohol and other substances and anxiety symptoms. Results: There was a prevalence rate of stress of 51.3% (95%CI 40.2- 62.2), with higher prevalence of physical symptoms than psychological symptoms. From the sixth semester students had higher prevalence of stress (55.3%), with no statistically significant difference between semesters. Regular use of alcohol (43.6%) and stimulants was similar between students with and without stress (P = 0.63). Among students with stress, 40% reported having already experienced panic symptoms, while only 5.3% of those without stress reported such symptoms (P <0.001). Among students with stress, 90% reported presence of anxiety symptoms in the last 6 months, while such symptoms were present in only 39.5% of those without stress (P <0.001). Conclusion: These findings suggest the need to investigate the causes of high prevalence of stress to propose preventive measures and/or to provide psychological support for students, providing better medical training