Pesquisa | SciELO

Polymers are options as antimicrobials for skin protection, antifouling surfaces, and fabrics. Here we analyzed the interaction of polymers based on poly(methacrylate) (PMMA) and poly((dimethylamino ethyl) methacrylate) (PDMAEMA) with model membranes and bacteria. We used the homopolymers PMMA, PDMAEMA, and the diblock copolymer(s) prepared with different PMMAm:PDMAEMAn ratios (m/n). The interactions of PDMAEMA and PMMAm-b-PDMAEMAn with large unilamellar vesicles (LUVs) prepared with phosphatidylcholine and phosphatidylglycerol at different pHs, were analyzed by nuclear magnetic resonance (NMR), dynamic light scattering, and zeta potential. These polymers promoted LUVs leakage of a fluorescent probe (5,6-carboxyfluorescein) localized exclusively in the internal aqueous compartment. Interestingly, all copolymers exhibit a bell-shaped pH dependence for the polymer-induced LUVs leakage. The interaction of the positively charged polymers and the pH effect was also demonstrated using giant unilamellar vesicles. These copolymers inhibited bacterial growth in the micromolar range and can be used to prevent bacterial growth on surfaces.

https://doi.org/10.21577/0103-5053.20230079

Spatial and Scientometric study of the Brazilian scientific production on Antarctic soils and permafrost
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VIEIRA, ÍCARO S.

; OLIVEIRA, FÁBIO S. DE

; MICHEL, ROBERTO F.M.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Supl. 3 elocation e20230823

Resumo: En | Texto: En | PDF: En

Abstract This article carried out the first scientometric and spatial analysis of Brazilian scientific production on Antarctic soils and permafrost, based on all publications available from the Scopus and Web of Science databases. Information on co-authorship, citation, research topics, and sampling sites was used to understand the social and theoretical structure as well as the spatial dynamics of this research field in Brazil over the last 25 years. We highlight that Brazil is presently, the main country to study the soils and permafrost of Maritime Antarctica, in addition to having an international robust and prolific production, with high impact on the literature, and widely distributed throughout the studied region. It was also possible to identify potential future international partners, new research locations and strategic research themes.

https://doi.org/10.1590/0001-3765202320230823

The SISBIOTA-Diptera Brazilian Network: A long-term survey of Diptera from unexplored Brazilian Western Arc of Amazon, Cerrado, and Pantanal
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Lamas, Carlos José Einicker

; Fachin, Diego Aguilar

; Falaschi, Rafaela Lopes

; Alcantara, Daniel Máximo Correa de

; Ale-Rocha, Rosaly

; Amorim, Dalton de Souza

; Araújo, Maíra Xavier

; Ascendino, Sharlene

; Baldassio, Letícia

; Bellodi, Carolina Ferraz

; Bravo, Freddy

; Calhau, Julia

; Capellari, Renato Soares

; Carmo-Neto, Antonio Marcelino do

; Cegolin, Bianca Melo

; Couri, Márcia Souto

; Carvalho, Claudio José Barros de

; Dios, Rodrigo de Vilhena Perez

; Falcon, Aida Vanessa Gomez

; Fusari, Livia Maria

; Garcia, Carolina de Almeida

; Gil-Azevedo, Leonardo Henrique

; Gomes, Marina Morim

; Graciolli, Gustavo

; Gudin, Filipe Macedo

; Henriques, Augusto Loureiro

; Krolow, Tiago Kütter

; Mendes, Luanna Layla

; Limeira-de-Oliveira, Francisco

; Maia, Valéria Cid

; Marinoni, Luciane

; Mello, Ramon Luciano

; Mello-Patiu, Cátia Antunes de

; Morales, Mírian Nunes

; Oliveira, Sarah Siqueira

; Patiu, Claudemir

; Proença, Barbara

; Pujol-Luz, Cristiane Vieira de Assis

; Pujol-Luz, José Roberto

; Rafael, José Albertino

; Riccardi, Paula Raile

; Rodrigues, João Paulo Vinicios

; Roque, Fabio de Oliveira

; Sallum, Maria Anice Mureb

; Santis, Marcelo Domingos de

; Santos, Charles Morphy Dias dos

; Santos, Josenilson Rodrigues dos

; Savaris, Marcoandre

; Shimabukuro, Paloma Helena Fernandes

; Silva, Vera Cristina

; Schelesky-Prado, Daniel de Castro

; Silva-Neto, Alberto Moreira da

; Camargo, Alexssandro

; Sousa, Viviane Rodrigues de

; Urso-Guimarães, Maria Virginia

; Wiedenbrug, Sofia

; Yamaguchi, Carolina

; Nihei, Silvio Shigueo

Revista Brasileira de Entomologia

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2023, Volume 67 Nº 4 elocation e20230051

Resumo: En | Texto: En | PDF: En

ABSTRACT The SISBIOTA-BRASIL was a three-year multimillion-dollar research program of the Brazilian government to document plants and animals in endangered/understudied areas and biomes in Brazil. Distributional patterns and the historical events that generated them are extensively unknown regarding Brazilian fauna and flora. This deficiency hinders the development of conservation policies and the understanding of evolutionary processes. Conservation decisions depend on precise knowledge of the taxonomy and geographic distribution of species. Given such a premise, we proposed to research the diversity of Diptera of the Brazilian western arc of Amazon, Cerrado, and Pantanal in the states of Mato Grosso, Mato Grosso do Sul, and Rondônia. Three important biomes of the South American continent characterize these Brazilian states: Amazon forest, Cerrado (Brazilian Savannah), and Pantanal. Besides their ecological relevance, these biomes historically lack intensive entomological surveys. Therefore, they are much underrepresented in the Brazilian natural history collections and in the scientific literature, which is further aggravated by the fact that these areas are being exponentially and rapidly converted to commercial lands. Our project involved over 90 collaborators from 24 different Brazilian institutions and one from Colombia among researchers, postdocs, graduate and undergraduate students, and technicians. We processed and analyzed nearly 300,000 specimens from ~60 families of Diptera collected with a large variety of methods in the sampled areas. Here, we provide a detailed overview of the genera and species diversity of 41 families treated. Our results point to a total of 2,130 species and 514 genera compiled and identified for the three states altogether, with an increase of 41% and 29% in the numbers of species and genera known for the three states combined, respectively. Overall, the 10 most species-rich families were Tachinidae, Cecidomyiidae, Tabanidae, Psychodidae, Sarcophagidae, Stratiomyidae, Bombyliidae, Syrphidae, Tephritidae, and Asilidae. The 10 most diverse in the number of genera were Tachinidae, Stratiomyidae, Asilidae, Mycetophilidae, Syrphidae, Tabanidae, Muscidae, Dolichopodidae, Sarcophagidae, and Chloropidae. So far, 111 scientific papers were published regarding taxonomic, phylogenetic, and biogeographical aspects of the studied families, with the description of 101 new species and three new genera. We expect that additional publications will result from this investigation because several specimens are now curated and being researched by specialists.

https://doi.org/10.1590/1806-9665-rbent-2023-0051

Different evaluation methods of Canchim cattle temperament
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Marcondes, Cintia Righetti

; Souza, Vanessa Aparecida Feijó de

; Bugner, Ana Luisa Paçó

; Oliveira, Fábio da Roza

; Maffei, Walsiara Estanislau

; Ribeiro, Andrea Roberto Bueno

Pesquisa Agropecuária Brasileira

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2023, Volume 58 elocation e03350

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The objective of this work was to evaluate the temperament of Canchim calves using different methods, to compare these methods, and to determine the most suitable for commercial use. The temperament of 1,831 calves was evaluated at 15 days after weaning by visually analyzing movement, tension, breathing, vocalizing, and kicking. Measurements were taken at 10 and 20 s after the calf entered the scale. The reactivity score was determined electronically, and flight speed was measured after the calf left the scale. The results of the principal component analysis showed that the first component explained 40.27% of total variation. Positive correlations were found for tension at 10 and 20 s, movement at 10 and 20 s, and reactivity score, with correlation coefficients ranging from 0.60 to 0.88. Temperament and reactivity scores presented moderate correlations of 0.25 and 0.35, respectively, with flight speed. However, kicking had no correlation with any variable. No differences were observed for reactivity measured at 10 or 20 s. The visual evaluations of movement and tension or of reactivity through an electronic device can be used for temperament evaluation of Canchim calves.

Resumo O objetivo deste trabalho foi avaliar o temperamento de bezerros da raça Canchim por meio de diferentes métodos, comparar estes métodos e determinar o mais adequado para uso comercial. O temperamento de 1.831 bezerros foi avaliado 15 dias após a desmama, tendo-se analisado visualmente deslocamento, tensão, respiração, vocalização e coice. As medidas foram feitas aos 10 e 20 s após o bezerro entrar na balança. A reatividade foi determinada eletronicamente, e a velocidade de saída foi medida após o bezerro sair da balança. O resultado da análise de componentes principais indicou que o primeiro componente explicou 40,27% da variação total. Foram verificadas correlações positivas para tensão aos 10 e 20 s, deslocamento aos 10 e 20 s, e reatividade, com coeficientes de correlação de 0,60 a 0,88. Os escores de temperamento e reatividade apresentaram correlação moderada de 0,25 e 0,35, respectivamente, com velocidade de saída. No entanto, coice não se correlacionou com nenhuma variável. Não foi observada nenhuma diferença para reatividade medida aos 10 ou 20 s. As avaliações visuais de deslocamento e tensão ou da reatividade por dispositivo eletrônico podem ser utilizadas na avaliação de temperamento de bezerros Canchim.

https://doi.org/10.1590/s1678-3921.pab2023.v58.03350

Lived Experiences of Nursing Professionals Providing Care to COVID-19 Patients
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Fhon, Jack Roberto Silva

; Püschel, Vilanice Alves de Araújo

; Oliveira, Larissa Bertacchini de

; Silva, Jessica Soares

; Tolentino, Rodrigo Santana

; Silva, Vinicius Cardoso da

; Silva, Luipa Michele

; Carbogim, Fábio da Costa

Aquichan

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Dez 2022, Volume 22 Nº 4 elocation e2247

Resumo: Pt Es En | Texto: Pt Es En | PDF: Pt | PDF: Es | PDF: En

Resumo Objetivo: analisar os relatos de profissionais de enfermagem sobre a experiência e vivência na assistência prestada aos pacientes hospitalizados com covid-19. Materiais e método: estudo exploratório, com análise qualitativa, do qual participaram 12 enfermeiros e oito técnicos de enfermagem de um hospital público no Brasil, realizado entre dezembro de 2020 e fevereiro de 2021. Como critério de inclusão estavam profissionais que prestavam assistência a pacientes com covid-19, em unidades de emergência, de terapia intensiva e de internação e pelo menos um ano de experiência na instituição. A análise das entrevistas pela análise de conteúdo e pela análise de similitude que gerou uma árvore de similitude e foi utilizado o método Reinert para as categorias temáticas. Resultados: a maioria dos participantes foi mulher, com média de 34,15 anos e experiência de 4,85 anos. Das análises, as palavras “paciente”, “ficar” e “achar” foram as mais frequentes e as categorias “sentimentos dos profissionais de enfermagem ante a pandemia”; “papel do enfermeiro e trabalho com a equipe multiprofissional nos cuidados ao paciente com covid-19”; “cuidados no atendimento ao paciente com covid-19” e “preocupação dos profissionais de enfermagem de seus familiares adoecerem durante a pandemia”. Conclusões: a enfermagem é predominantemente constituída por mulheres e, nos seus relatos sobre a experiência e a vivência de cuidar de paciente com covid-19, apontaram que a preocupação e o medo foram predominantes, sendo a família um dos fatores protetores para suportar os riscos de trabalhar contra algo novo e que pode culminar com a morte.

Resumen Objetivo: analizar los relatos de profesionales de enfermería sobre la experiencia y vivencia en la asistencia brindada a los pacientes hospitalizados con covid-19. Materiales y método: estudio exploratorio, con análisis cualitativo, en el que participaron 12 enfermeros y ocho técnicos de enfermería de un hospital público en Brasil, realizado entre diciembre de 2020 y febrero de 2021. Como criterio de inclusión estaban profesionales que brindaban asistencia a pacientes con covid-19, en unidades de emergencia, de terapia intensiva y de hospitalización y al menos un año de experiencia en la institución. El análisis de las entrevistas por el análisis de contenido y por el análisis de similitud que generó un árbol de similitud y se utilizó el método Reinert para las categorías temáticas. Resultados: la mayoría de los participantes fue mujer, con promedio de 34,15 años y experiencia de 4,85 años. De los análisis, las palabras “paciente”, “ficar” (“quedar”) y “achar” (“crer”) fueron las más frecuentes y las categorías “sentimientos de los profesionales de enfermería ante la pandemia”; “rol del enfermero y trabajo con el equipo multiprofesional en los cuidados al paciente con covid-19”; “cuidados en la atención al paciente con covid-19” y “preocupación de los profesionales de enfermería de que sus familiares se enfermaran durante la pandemia”. Conclusiones: la enfermería es predominantemente constituida por mujeres y, en sus relatos sobre la experiencia y vivencia de cuidar a paciente con covid-19, señalaron que la preocupación y el miedo fueron predominantes, siendo la familia un de los factores protectores para soportar los riesgos de trabajar en contra algo nuevo y que puede culminar con la muerte.

Abstract Objective: To analyze nursing professionals’ reports on their lived experience in the care provided to hospitalized patients with COVID-19. Materials and Methods: This is an exploratory study using a qualitative analysis, which included twelve nurses and eight nursing technicians from a public hospital in Brazil, conducted between December 2020 and February 2021. The inclusion criteria were professionals who provided care to COVID-19 patients in emergency, intensive care, and inpatient units and who had at least one year of experience in the institution. The interviews were analyzed through content and similarity analysis that generated a similarity tree; the Reinert method was used for thematic categories. Results: Most participants were female, with a mean age of 34.15 years and 4.85 years of experience. From the analysis, the words ‘patient,’ ‘to stay,’ and ‘to find’ were the most frequent, and for the categories, they were “nursing professionals’ feelings regarding the pandemic,” “the nurses’ role and work with the multi-professional team in the care provided to patients with COVID-19,” “precautions with the care provided to patients with COVID-19,” and “nursing professionals’ concern that their family members may become ill during the pandemic.” Conclusions: The nursing staff is predominantly composed of females and, in their reports on the lived experience of providing care to patients with COVID-19, they pointed out that concern and fear were prevalent, with the family being one of the protective factors to withstand the risks of working against something novel that may result in death.

https://doi.org/10.5294/aqui.2022.22.4.7

Monitorização Residencial da Pressão Arterial e Controle Pressórico em Hipertensos Tratados
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Brandão, Andréa Araujo

; Barroso, Weimar Kunz Sebba

; Feitosa, Audes

; Barbosa, Eduardo Costa Duarte

; Miranda, Roberto Dischinger

; Vitorino, Priscila Valverde de Oliveira

; Pozzan, Roberto

; Ribeiro, Lucio Paulo

; Epelman, Abraham

; Saraiva, Giovanni Alves

; Silveira, Fabio Serra

; Braga, Antônio Almeida

; Gomes, Marco Mota

Arquivos Brasileiros de Cardiologia

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Ago 2022, Volume 119 Nº 2 Páginas 353 - 357

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20220038

Telemedicine can be a feasible means of guiding untrained general practitioners to perform point-of-care ultrasound in life-threatening situations: the case of a field hospital during the COVID-19 pandemic
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Accorsi, Tarso Augusto Duenhas

; Lima, Karine De Amicis

; Silva Filho, José Roberto de Oliveira

; Morbeck, Renata Albaladejo

; Pedrotti, Carlos Henrique Sartorato

; Köhler, Karen Francine

; Racy, Fabio de Castro Jorge

; Cordioli, Eduardo

Radiologia Brasileira

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Ago 2022, Volume 55 Nº 4 Páginas 236 - 241

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Objetivo: Avaliar a viabilidade da orientação por telemedicina de médicos in situ não treinados na avaliação ultrassonográfica de múltiplos órgãos mediante protocolo padronizado, durante uma situação de risco de vida em hospital de campanha. Materiais e Métodos: Avaliamos 11 pacientes com choque e/ou dispneia de manifestação aguda durante a internação, cujos clínicos gerais solicitaram auxílio de especialista a distância. Resultados: Todos os médicos aceitaram o protocolo e, posicionando o transdutor, obtiveram imagens-chave da veia jugular interna, pulmão e veia cava inferior, quando guiados por um médico via telemedicina, que interpretou os achados desses órgãos. No entanto, apenas quatro (36%) médicos in situ obtiveram a imagem-chave apropriada do coração na janela paraesternal do eixo longo esquerdo e três (27%) tiveram imagem remotamente interpretada imediatamente. O tempo de avaliação variou de 7-42 minutos (média de 22,7 ± 12 minutos). Conclusão: Em situação de risco de vida, os clínicos gerais não treinados podem ser corretamente orientados por especialistas em telemedicina para realizar ultrassonografia multiórgãos in situ, melhorando o diagnóstico beira do leito.

Abstract Objective: To evaluate the feasibility of telemedicine using a standardized multiorgan ultrasound assessment protocol to guide untrained on-site general practitioners at a field hospital during a life-threatening crisis. Materials and Methods: We evaluated 11 inpatients with shock, with or without acute dyspnea, for whom general practitioners spontaneously requested remote evaluation by a specialist. Results: All of the general practitioners accepted the protocol and were able to position the transducer correctly, thus obtaining key images of the internal jugular vein, lungs, and inferior vena cava when guided remotely by a telemedicine physician, who interpreted all of the findings. However, only four (36%) of the on-site general practitioners obtained the appropriate key image of the heart in the left parasternal long-axis view, and only three (27%) received an immediate interpretation of an image from the remote physician. The mean evaluation time was 22.7 ± 12 min (range, 7-42 min). Conclusion: Even in life-threatening situations, untrained general practitioners may be correctly guided by telemedicine specialists to perform multiorgan point-of-care ultrasound in order to improve bedside diagnostic evaluation.

https://doi.org/10.1590/0100-3984.2021.0098

10.

Serum vascular endothelial growth factor as a marker for tubal pregnancy
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Cabar, Fábio Roberto

; Pereira, Pedro Paulo

; Oliveira, Matheus Abelo de

; Francisco, Rossana Pulcinelli Vieira

Revista da Associação Médica Brasileira

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Jun 2022, Volume 68 Nº 6 Páginas 860 - 865

Resumo: En | Texto: En | PDF: En

SUMMARY OBJECTIVE: The objective of this study was to evaluate whether a single measurement of vascular endothelial growth factor could distinguish between intrauterine pregnancy and ectopic pregnancy and to correlate the levels of vascular endothelial growth factor with serum levels of progesterone andβ-human chorionic gonadotropin in each subgroup. METHODS: Ninety patients with a positive human chorionic gonadotropin test and either abdominal pain or vaginal bleeding were selected; pregnancies were singletons, spontaneously conceived, 42–56 days of gestational age. All patients had a transvaginal ultrasound examination and were divided into three subgroups: abnormal intrauterine pregnancy, tubal pregnancy, and normal intrauterine pregnancy. Tubal pregnancies were surgically treated and histologically confirmed. Blood samples were collected for the determination of β-human chorionic gonadotropin, progesterone, and vascular endothelial growth factor and their concentrations were compared in each subgroup. Receiver operating characteristic curve was calculated by comparing the subgroup of tubal pregnancy to the other groups. A Fisher discriminant function analysis was performed. The level of significance was 5%. RESULTS: One-way analysis of variance revealed a significant correlation between the different subgroups and β-human chorionic gonadotropin, progesterone, and vascular endothelial growth factor serum levels (p<0.001). Vascular endothelial growth factor concentration was significantly higher for patients with tubal pregnancy than for other subgroups (p<0.05). β-Human chorionic gonadotropin and progesterone levels were higher in the subgroup with normal intrauterine pregnancies compared with the subgroups with tubal and abnormal intrauterine pregnancies (p<0.05). Serum vascular endothelial growth factor level >188.7 ng/mL predicted tubal pregnancy with 96.7% sensitivity, 95.0% specificity, 90.6% positive predictive value, and 98.3% negative predictive value. CONCLUSIONS: Serum vascular endothelial growth factor could be a marker in discriminating intrauterine pregnancy from tubal pregnancy; its levels are increased in women with ectopic pregnancy compared with women with normal and abnormal intrauterine pregnancies.

https://doi.org/10.1590/1806-9282.20220224

11.

Impacto da Primeira Onda da Pandemia de COVID-19 na Cirurgia Cardiovascular no Brasil: Análise de um Centro Terciário de Referência
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Lisboa, Luiz Augusto

; Mejia, Omar Asdrúbal Vilca

; Arita, Elisandra Trevisan

; Guerreiro, Gustavo Pampolha

; Silveira, Lucas Molinari Veloso da

; Brandão, Carlos Manuel de Almeida

; Dias, Ricardo Ribeiro

; Dallan, Luís Roberto Palma

; Miana, Leonardo

; Caneo, Luiz F.

; Jatene, Marcelo Biscegli

; Dallan, Luís Alberto Oliveira

; Jatene, Fabio Biscegli

Arquivos Brasileiros de Cardiologia

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Mar 2022, Volume 118 Nº 3 Páginas 663 - 666

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20210235

12.

Ethical and bioethical aspects concerning the disclosure of medical information for a fair reason
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Raimundo, Gabrielle Cristina

; Grando, Lavínia Luíza

; Machado, André Newman Cordeiro

; Oliveira, Matheus

; Cabar, Fábio Roberto

Revista da Associação Médica Brasileira

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Fev 2022, Volume 68 Nº 2 Páginas 202 - 205

Resumo: En | Texto: En | PDF: En

SUMMARY OBJECTIVE: The objective of this study was to emphasize the importance of legal and bioethical knowledge in maintaining medical confidentiality, especially in situations when there is a diagnosis of HIV infection. METHODS: A literature review of studies published in the Scientific Electronic Library Online and National Library of Medicine databases was performed. Sixteen studies available in full, online, and free, published between 2010 and 2020, were selected. RESULTS: The studies highlighted that, despite the ethical duty to breach confidentiality for the protection of third parties, many doctors are reluctant to reveal this secret due to the power of stigmatization and social discrimination related to the diagnosis of HIV infection, which affects integrity, counseling, and capability to treat patients. CONCLUSION: HIV diagnosis implies bioethical and legal questions. Respect for medical confidentiality is a matter to be discussed, as there is a need to protect the privacy of the patient, at the same time the responsibility to preserve the health of others.

https://doi.org/10.1590/1806-9282.20211043

13.

Soil-chronosequence and Quaternary landscape evolution at the marine terraces of Harmony Point, Nelson Island, Maritime Antarctica
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RODRIGUES, WILLIAM F.

; MACHADO, MARIANA R.

; OLIVEIRA, FÁBIO S. DE

; SCHAEFER, CARLOS ERNESTO G.R.

; LEITE, MARIÂNGELA G.P.

; MICHEL, ROBERTO F.M.

; GAUZZI, TEODORO

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 1 elocation e20201141

Resumo: En | Texto: En | PDF: En

Abstract This study characterized the physical, chemical, macro- and micromorphological soil properties from three successive marine terrace levels from Harmony Point (Nelson Island, Maritime Antarctica) in order to understand the pedological signatures of Quaternary coastal landscape evolution of Maritime Antarctica. Soils were sampled on the Late Holocene beach (current beach) and Mid Holocene marine terraces higher up, at 3, 8, and 12 m a.s.l. At the lower levels, the predominant soils were Gelorthents, whereas Haplogelepts dominate the higher terraces. Soil properties are mostly influenced by parent material and faunal activity, in which cryoclastic (thermal weathering) and phosphatization are the main soil-forming processes. Soils from the upper levels are more developed, deeper with reddish colors, granular structures and incipient formation B horizon. These horizonation features highlight that soils vary according with age of glacier-isostatic terrace uplift, representing a Quaternary soil chronosequence. All marine terrace levels are Ornithogenic soils, at varying degrees. However, the presence of old bird nesting sites for long periods led to formation of phosphatic horizons, stable Fe-phosphate minerals and abundant vegetation in the highest terraces of this part of Maritime Antarctica.

https://doi.org/10.1590/0001-3765202220201141

14.

Perfil Clínico, Laboratorial e de Métodos de Imagem na Amiloidose Sistêmica em um Centro de Referência Cardiológico Brasileiro
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Fernandes, Fábio

; Alencar Neto, Aristóteles Comte de

; Bueno, Bruno Vaz Kerges

; Cafezeiro, Caio Rebouças Fonseca

; Rissato, João Henrique

; Szor, Roberta Shcolnik

; Carvalho, Mariana Lombardi Peres de

; Mathias Júnior, Wilson

; Lino, Angelina Maria Martins

; Castelli, Jussara Bianchi

; Souza, Evandro de Oliveira

; Ramires, Félix José Alvarez

; Hotta, Viviane Tiemi

; Soares Júnior, José

; Tavares, Caio de Assis Moura

; Krieger, José Eduardo

; Rochitte, Carlos Eduardo

; Dabarian, André

; Hajjar, Ludhmila Abrahão

; Kalil Filho, Roberto

; Mady, Charles

Arquivos Brasileiros de Cardiologia

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2022, Volume 118 Nº 2 Páginas 422 - 432

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Fundamento Amiloidose sistêmica é uma doença com manifestações clínicas diversas. O diagnóstico envolve suspeita clínica, aliada a métodos complementares. Objetivo Descrever o perfil clínico, laboratorial, eletrocardiográfico e de imagem no acometimento cardíaco da amiloidose sistêmica. Métodos Estudo de uma amostra de conveniência, analisando dados clínicos, laboratoriais, eletrocardiográficos, ecocardiográficos, medicina nuclear e ressonância magnética. Considerou-se significância estatística quando p < 0,05. Resultados Avaliaram-se 105 pacientes (com mediana de idade de 66 anos), sendo 62 homens, dos quais 83 indivíduos apresentavam amiloidose por transtirretina (ATTR) e 22 amiloidose por cadeia leve (AL). Na ATTR, 68,7% eram de caráter hereditário (ATTRh) e 31,3% do tipo selvagem (ATTRw). As mutações mais prevalentes foram Val142Ile (45,6%) e Val50Met (40,3%). O tempo de início dos sintomas ao diagnóstico foi 0,54 e 2,15 anos nas formas AL e ATTR (p < 0,001), respectivamente. O acometimento cardíaco foi observado em 77,9% dos ATTR e 90,9% dos AL. Observaram-se alterações de condução atrioventricular em 20% e intraventricular em 27,6% dos pacientes, sendo 33,7 % na ATTR e 4,5% das AL (p = 0,006). A forma ATTRw apresentou mais arritmias atriais que os ATTRh (61,5% x 22,8%; p = 0,001). Ao ecocardiograma a mediana da espessura do septo na ATTRw x ATTRh x AL foi de 15 mm x 12 mm x 11 mm (p = 0,193). Observou-se BNP elevado em 89,5% dos indivíduos (mediana 249 ng/mL, IQR 597,7) e elevação da troponina em 43,2%. Conclusão Foi possível caracterizar, em nosso meio, o acometimento cardíaco na amiloidose sistêmica, em seus diferentes subtipos, através da história clínica e dos métodos diagnósticos descritos.

Abstract Background Systemic amyloidosis is a disease with heterogeneous clinical manifestations. Diagnosis depends on clinical suspicion combined with specific complementary methods. Objective To describe the clinical, laboratory, electrocardiographic, and imaging profile in patients with systemic amyloidosis with cardiac involvement. Methods This study was conducted with a convenience sample, analyzing clinical, laboratory, electrocardiographic, echocardiographic, nuclear medicine, and magnetic resonance data. Statistical significance was set at p < 0.05. Results A total of 105 patients were evaluated (median age of 66 years), 62 of whom were male. Of all patients, 83 had transthyretin (ATTR) amyloidosis, and 22 had light chain (AL) amyloidosis. With respect to ATTR cases, 68.7% were the hereditary form (ATTRh), and 31.3% were wild type (ATTRw). The most prevalent mutations were Val142Ile (45.6%) and Val50Met (40.3%). Time from onset of symptoms to diagnosis was 0.54 and 2.15 years, in the AL and ATTR forms, respectively (p < 0.001). Cardiac involvement was observed in 77.9% of patients with ATTR and in 90.9% of those with AL. Alterations were observed in atrioventricular and intraventricular conduction in 20% and 27.6% of patients, respectively, with 33.7% in ATTR and 4.5% in AL (p = 0.006). In the ATTRw form, there were more atrial arrhythmias than in ATTRh (61.5% versus 22.8%; p = 0.001). On echocardiogram, median septum thickness in ATTRw, ATTRh, and AL was 15 mm, 12 mm, and 11 mm, respectively (p = 0.193). Elevated BNP was observed in 89.5% of patients (median 249, ICR 597.7), and elevated troponin was observed in 43.2%. Conclusion In this setting, it was possible to characterize cardiac involvement in systemic amyloidosis in its different subtypes by means of clinical history and the diagnostic methods described.

https://doi.org/10.36660/abc.20201003

15.

Entrepreneurial Intention of Brazilian Immigrants in Canada
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Falcão, Roberto Pessoa de Queiroz

; Cruz, Eduardo Picanço

; Paula, Fábio de Oliveira

; Machado, Michel Mott

BAR - Brazilian Administration Review

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2022, Volume 19 Nº 1 elocation e200018

Resumo: En | Texto: En | PDF: En

ABSTRACT This study provides evidence of possible sociodemographic characteristics that would influence the intention of Brazilian immigrants to engage in ventures in Canada. Data were collected through surveys released on Brazilian Facebook groups. A total of 675 Brazilian respondents living in Canada were triangulated with data from seven semi-structured interviews conducted in Canada and with two consulate officials. Survey data analysis was performed with logit equations to check relationships between entrepreneurial intention (EI) and variables - namely, gender, age upon arrival, level of education, length of stay in the country, student/work/tourist visa status upon arrival, and citizenship application status/permanent migration. The key results point to factors with a positive influence on the intention to venture: gender (being female) and all visa status and other variables were either non-significant or had a negative influence. Of the entrepreneurs, age upon arrival was a significant predictor. Variables such as level of education, time in the country, and tourist visa had a negative influence. This paper contributes theoretically by evidencing recent immigration patterns and variables related to entrepreneurial venturing in the Brazilian immigrant community in Canada, which may support mechanisms for attracting and fostering future entrepreneurs. Further comparative studies between other Brazilian and ethnic communities are proposed, including other variables.

https://doi.org/10.1590/1807-7692bar2022200018

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