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[SciELO Preprints] - Guidelines on the Diagnosis and Treatment of Hypertrophic Cardiomyopathy – 2024
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Fernandes, Fabio Simões, Marcus V. Correia, Edileide de Barros Marcondes-Braga, Fabiana G. Coelho-Filho, Otavio Rizzi Mesquita, Cláudio Tinoco Mathias-Junior, Wilson Rochitte, Carlos Eduardo Ramires, Felix José Alvarez Alves, Silvia Marinho Martins Montera, Marcelo Westerlund Lopes, Renato Delascio Oliveira-Junior, Mucio Tavares Scolari, Fernando L. Avila, Walkiria Samuel Canesin, Manoel Fernandes Bacal, Fernando Bocchi, Edimar Alcides Moura, Lídia Ana Zytynski Saad, Eduardo Benchimol Scanavacca, Mauricio I. Valdigem, Bruno Pereira Cano , Manuel Nicolas Abizaid , Alexandre Ribeiro, Henrique Barbosa Lemos-Neto, Pedro Alves Ribeiro, Gustavo Calado de Aguiar Jatene, Fabio Biscegli Dias, Ricardo Ribeiro Beck-da-Silva, Luis Rohde, Luis Eduardo P. Bittencourt, Marcelo Imbroinise Pereira, Alexandre Krieger, José Eduardo Villacorta, Humberto Martins, Wolney de Andrade Figueiredo-Neto, José Albuquerque de Cardoso , Juliano Novaes Pastore, Carlos Alberto Jatene, Ieda Biscegli Tanaka, Ana Cristina Sayuri Hotta, Viviane Tiemi Romano, Minna Moreira Dias Albuquerque, Denilson Campos de Mourilhe-Rocha, Ricardo Hajjar, Ludhmila Abrahão Brito, Fabio Sandoli de Caramelli , Bruno Calderaro, Daniela Farsky, Pedro Silvio Colafranceschi , Alexandre Siciliano Pinto, Ibraim Masciarelli Vieira , Marcelo Luiz Campos Danzmann, Luiz Claudio Barberato , Silvio Henrique Mady, Charles Martinelli-Filho, Martino Torbey , Ana Flavia Malheiros Schwartzmann, Pedro Vellosa Macedo, Ariane Vieira Scarlatelli Ferreira , Silvia Moreira Ayub Schmidt, Andre Melo , Marcelo Dantas Tavares de Lima-Filho, Moysés Oliveira Sposito, Andrei C. Brito, Flavio de Souza Biolo, Andreia Madrini-Junior, Vagner Rizk, Stéphanie Itala Mesquita, Evandro Tinoco

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Publication date: 2024-04-08

Abstract: Pt Es En

A cardiomiopatia hipertrófica (CMH) é uma forma de doença do músculo cardíaco de causa genética, caracterizada pela hipertrofia das paredes ventriculares. O diagnóstico requer detecção por métodos de imagem (Ecocardiograma ou Ressonância Magnética Cardíaca) de qualquer segmento da parede do ventrículo esquerdo com espessura > 15 mm, sem outra causa provável. A análise genética permite identificar mutações de genes codificantes de diferentes estruturas do sarcômero responsáveis pelo desenvolvimento da CMH em cerca de 60% dos casos, permitindo o rastreio de familiares e aconselhamento genético, como parte importante do manejo dos pacientes e familiares. Vários conceitos sobre a CMH foram recentemente revistos, incluindo sua prevalência de 1 em 250 indivíduos, não sendo, portanto, uma doença rara, mas subdiagnosticada. A vasta maioria dos pacientes é assintomática. Naqueles sintomáticos, a obstrução do trato de saída do ventrículo esquerdo (OTSVE) é o principal distúrbio responsável pelos sintomas, devendo-se investigar a sua presença em todos os casos. Naqueles em que o ecocardiograma em repouso ou com Manobra de Valsalva não detecta gradiente intraventricular significativo (> 30 mmHg), devem ser submetidos à ecocardiografia com esforço físico para detecção da OTSVE.   Pacientes com sintomas limitantes e grave OTSVE, refratários ao uso de betabloqueadores e verapamil, devem receber terapias de redução septal ou uso de novas drogas inibidoras da miosina cardíaca. Por fim, os pacientes adequadamente identificados com risco aumentado de morta súbita podem receber medida profilática com implante de cardiodesfibrilador implantável (CDI).

La miocardiopatía hipertrófica (MCH) es una forma de enfermedad cardíaca de origen genético, caracterizada por el engrosamiento de las paredes ventriculares. El diagnóstico requiere la detección mediante métodos de imagen (Ecocardiograma o Resonancia Magnética Cardíaca) que muestren algún segmento de la pared ventricular izquierda con un grosor > 15 mm, sin otra causa probable. El análisis genético permite identificar mutaciones en genes que codifican diferentes estructuras del sarcómero responsables del desarrollo de la MCH en aproximadamente el 60% de los casos, lo que permite el tamizaje de familiares y el asesoramiento genético, como parte importante del manejo de pacientes y familiares. Varios conceptos sobre la MCH han sido revisados recientemente, incluida su prevalencia de 1 entre 250 individuos, por lo tanto, no es una enfermedad rara, sino subdiagnosticada. La gran mayoría de los pacientes son asintomáticos. En los casos sintomáticos, la obstrucción del tracto de salida ventricular izquierdo (TSVI) es el trastorno principal responsable de los síntomas, y su presencia debe investigarse en todos los casos. En aquellos en los que el ecocardiograma en reposo o la maniobra de Valsalva no detecta un gradiente intraventricular significativo (> 30 mmHg), deben someterse a ecocardiografía de esfuerzo para detectar la obstrucción del TSVI. Los pacientes con síntomas limitantes y obstrucción grave del TSVI, refractarios al uso de betabloqueantes y verapamilo, deben recibir terapias de reducción septal o usar nuevos medicamentos inhibidores de la miosina cardíaca. Finalmente, los pacientes adecuadamente identificados con un riesgo aumentado de muerte súbita pueden recibir medidas profilácticas con el implante de un cardioversor-desfibrilador implantable (CDI).

Hypertrophic cardiomyopathy (HCM) is a form of genetically caused heart muscle disease, characterized by the thickening of the ventricular walls. Diagnosis requires detection through imaging methods (Echocardiogram or Cardiac Magnetic Resonance) showing any segment of the left ventricular wall with a thickness > 15 mm, without any other probable cause. Genetic analysis allows the identification of mutations in genes encoding different structures of the sarcomere responsible for the development of HCM in about 60% of cases, enabling screening of family members and genetic counseling, as an important part of patient and family management. Several concepts about HCM have recently been reviewed, including its prevalence of 1 in 250 individuals, hence not a rare but rather underdiagnosed disease. The vast majority of patients are asymptomatic. In symptomatic cases, obstruction of the left ventricular outflow tract (LVOT) is the primary disorder responsible for symptoms, and its presence should be investigated in all cases. In those where resting echocardiogram or Valsalva maneuver does not detect significant intraventricular gradient (> 30 mmHg), they should undergo stress echocardiography to detect LVOT obstruction. Patients with limiting symptoms and severe LVOT obstruction, refractory to beta-blockers and verapamil, should receive septal reduction therapies or use new drugs inhibiting cardiac myosin. Finally, appropriately identified patients at increased risk of sudden death may receive prophylactic measure with implantable cardioverter-defibrillator (ICD) implantation.

https://doi.org/10.1590/SciELOPreprints.8394

Effect of feeding frequency and water salinization on early development of Pyrrhulina brevis, an Amazonian ornamental fish
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PINHEIRO JUNIOR, Arlindo dos S.

; OLIVEIRA, Leonnan C. C. de

; EIRAS, Bruno José C. F.

; LIMA, Wesley dos S.

; VERAS, Galileu C.

; MOURA, Lorena B. de

; SALARO, Ana L.

; CAMPELO, Daniel A. V.

Acta Amazonica

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jun 2023, Volume 53 N. 2 Pages 107 - 113

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

ABSTRACT Pyrrhulina brevis is an endemic fish from the Amazon basin that is valued in the ornamental fish market. In larviculture, fish are very sensitive to stressors and have a high mortality rate. Salinized water may provide more energy to overcome stress and feeding frequency is an important strategy to improve productive performance. Therefore, the aim of this study was to evaluate the best feeding frequency and the best level of water salinization for larval development of P. brevis. A total of 360 post-larvae of P. brevis (5.26 ± 1.65 mg, 5.57 ± 0.68 mm) were randomly distributed in 36 aquariums (1 L) in a 3x4 factorial scheme, to evaluate three concentrations of salt in water (0, 1 and 2 g L-1) and four feeding frequencies (once, twice, three and four times a day). We offered 150 Artemia nauplii per day and per post-larvae during 15 days. The fish kept at 1 g L-1 salinized water, and those fed 3 and 4 times a day presented significantly greater final length and weight, weight gain, and specific growth rate for length and weight. An interaction between salinized water and feeding frequency was observed for survival rate. We conclude that, during the initial rearing phase of P. brevis, feeding frequency of three times a day and salinized water at 1 g L-1 is recommended.

RESUMO Pyrrhulina brevis é um peixe endêmico da bacia amazônica que apresenta bons valores no mercado de peixes ornamentais. Na larvicultura, os peixes são muito sensíveis aos estressores e apresentam alta taxa de mortalidade. A água salinizada pode fornecer mais energia para superar o estresse e a frequência alimentar é uma estratégia importante para melhorar o desempenho produtivo. Portanto, o objetivo deste trabalho foi avaliar a melhor frequência alimentar e o melhor nível de salinização da água para o desenvolvimento larval de P. brevis. Um total de 360 pós-larvas de P. brevis (5,26 ± 1,65 mg, 5,57 ± 0,68 mm) foram distribuídos aleatoriamente em 36 aquários (1 L) em esquema fatorial 3x4, para avaliar três concentrações de sal na água (0, 1 e 2 g L-1) e quatro frequências de alimentação (uma, duas, três e quatro vezes ao dia). Foram oferecidas 150 náuplios de Artemia por dia e por pós-larva, durante 15 dias. Os peixes mantidos com 1 g L-1 de água salinizada e os alimentados 3 e 4 vezes ao dia apresentaram comprimento e peso finais, ganho de peso e taxa de crescimento específico para comprimento e peso significativamente maiores. Uma interação entre água salinizada e frequência alimentar foi observada para a taxa de sobrevivência. Concluímos que, durante a fase inicial de criação de P. brevis, recomenda-se uma frequência alimentar de três vezes ao dia e água salinizada a 1 g L-1.

https://doi.org/10.1590/1809-4392202200602

Genetic diversity of the species Cnesterodon hypselurus (Cyprinodontiformes: Poeciliidae) in Cinzas River basin: new record and headwater capture evidences
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Ferreira, Dhiego G.

; Galindo, Bruno A.

; Souza, Tais C. de

; Pereira, Leonardo B.

; Bernardes, Victor A. P.

; Marques, Ana J. C.

; Frantine-Silva, Wilson

; Kotelok-Diniz, Thais

; Aggio, Carlos E. G.

; Apolinário-Silva, Caroline

; Zanatta, Augusto S.

; Sofia, Silvia H.

Neotropical Ichthyology

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2023, Volume 21 N. 1 elocation e230007

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Cnesterodon hypselurus is a small fish that has a restricted distribution in southern Brazil, including headwaters of the Tibagi and Itararé river basins (Upper Paraná River). This study reported C. hypselurus in a headwater of Cinzas River basin, where there were no previous records of this species, and employed microsatellite loci and mitochondrial haplotypes in a population genetic analysis. A total of 57 specimens was analyzed, including 30 from Cinzas River basin, 25 from Itararé River basin and two from Tibagi River basin. Results indicated low genetic diversity levels (HE = 0.334 and h = 0.246) for the sample from Cinzas River, suggesting reflections of a founder effect after the species had dispersed from one watershed to another, possibly by headwater captures. Since different populations were detected between the Cinzas and Itararé rivers (DEST = 0.248, P-value < 0.05) and other occurrence sites are still unknown in the Cinzas River basin, the data herein have great relevance and should be taken into account in future management and conservation actions, as well as in evolutionary studies of C. hypselurus.

Resumo Cnesterodon hypselurus é um pequeno peixe que possui distribuição restrita no sul do Brasil, incluindo cabeceiras das bacias dos rios Tibagi e Itararé (alto rio Paraná). Este estudo reportou C. hypselurus na cabeceira da bacia do rio das Cinzas, onde não havia registros prévios desta espécie, e empregou locos microssatélites e haplótipos mitocondriais em uma análise genética de populações. Um total de 57 espécimes foi analisado, incluindo 30 do rio das Cinzas, 25 da bacia do rio Itararé e dois da bacia do rio Tibagi. Os resultados indicaram baixos níveis de diversidade genética (HE = 0,334 e h = 0,246) para a amostra do rio das Cinzas, sugerindo reflexos de um efeito fundador após a espécie ter dispersado de uma bacia para a outra, possivelmente a partir de captura de cabeceiras. Uma vez que diferentes populações foram detectadas entre os rios das Cinzas e Itararé (DEST = 0,248, valor de P < 0,05) e que outros pontos de ocorrência ainda são desconhecidos na bacia do rio das Cinzas, os dados do presente estudo mostram grande relevância e deveriam ser considerados em futuras ações de manejo e conservação, bem como em estudos evolutivos de C. hypselurus.

https://doi.org/10.1590/1982-0224-2023-0007

Chemical characterization, cytotoxicity, antimicrobial and antioxidant potential of Justicia pectoralis Jacq and Croton jacobinensis Baill extracts
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Oliveira, Leilanne Márcia Nogueira de

; Bastos, Maria do Socorro Rocha

; Lima, Ana Cristina Silva de

; Figueiredo, Evânia Altina Teixera de

; Dias, Flayanna Gouveia Braga

; Silva, Larissa Morais Ribeiro da

; Benevides, Selene Dahia

; Ribeiro, Paulo Riceli Vasconcelos

; Sabino, Luiz Bruno de Sousa

; Figueiredo, Raimundo Wilane de

Brazilian Journal of Pharmaceutical Sciences

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2023, Volume 59 elocation e21224

Abstract: En | Text: En | PDF: En

Abstract In this research, aqueous and ethanolic extracts from Justicia pectoralis Jacq and Croton Jacobinensis Baill were characterized. The UPLC-QTOF-MSE analysis was performed on the extracts identified, predominantly, flavonoids, tannins and acids. The extracts did not indicate toxicity in human epithelial cells. C. jacobinensis presented a concentration of phenolics 60.5% higher than J. pectoralis in all scenarios evaluated and, for both samples, the hydroalcoholic extract at 70% exhibited the best efficiency in the extraction (14501.3 and 32521.5 mg GAE 100 g-1 for J. pectoralis and C. jacobinensis, respectively). The antioxidant activity presented a positive correlation with the concentration of phenolics, being 1.186,1 and 1.507,9 μM of Trolox for J. pectoralis and C. jacobinensis at 70% of ethanol; however, it was not verified statistical difference between the ethanolic solutions (p < 0.05). The antimicrobial activity of J. pectoralis extracts was highlighted once was the most effective against gram-positive bacteria. The results suggest that both J. pectoralis and C. jacobinensis extracts present the potential to be applied as natural additives due to their antioxidant and antimicrobial activity and safety. Thus, it is suggesting the development of studies that could investigate the interaction of these plant extracts with food matrices is required.

https://doi.org/10.1590/s2175-97902023e21224

Different stocks of Prochilodus lineatus along the Cinzas River basin: contributions from a free-flowing tributary in the Capivara Reservoir region, Paranapanema River basin (upper Paraná River) freeflowing free flowing region upper
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Ferreira, Dhiego G.

; Galindo, Bruno A.

; Limeira, Daniel M.

; Garla, Alanna

; Marques, Ana J. C.

; Moreira, Amanda A.

; Rodrigues, Maria V. H.

; Clemente, Roberta C.

; Shimpo, Jhennifer Y.

; Martins, Gabriel A.

; Almeida, Fernanda S.

; Apolinário-Silva, Caroline

; Zanatta, Augusto S.

; Sofia, Silvia H.

; Souza-Shibatta, Lenice

Neotropical Ichthyology

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2023, Volume 21 N. 4 elocation e230080

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Barragens são umas das principais ameaças para peixes potamódromos Neotropicais, causando bloqueios de rotas migratórias e perdas de áreas de reprodução em um número crescente de sistemas de drenagem. Neste cenário, dados atuais defendem que a manutenção de tributários de fluxo livre em bacias hidrográficas fragmentadas seria uma importante estratégia na conservação de peixes migradores, tanto em situações de panmixia quanto em cenários com diferentes estoques coexistindo, tal como já relatado para Prochilodus lineatus. Este estudo analisou locos microssatélites e haplótipos mitocondriais em amostras de P. lineatus obtidas em diferentes anos ao longo da bacia do rio das Cinzas, no reservatório de Capivara (maior reservatório na calha principal do rio Paranapanema, alto rio Paraná) e no rio Tibagi, todos conectados por trechos livres, visando investigar as contribuições da bacia do rio das Cinzas na dinâmica populacional de peixes migradores na região do reservatório de Capivara. Ambos os marcadores detectaram altos níveis de diversidade genética e indicaram diferentes estoques de P. lineatus ao longo da bacia do rio das Cinzas, sugerindo alguma estruturação genética temporal, bem como a mistura destes estoques na amostra do reservatório de Capivara e de outros pontos, corroborando as relações de estoques neste reservatório e seus tributários. Neotropicais drenagem cenário coexistindo P maior Paranapanema Paraná Tibagi livres temporal pontos

Abstract Dams are one of the main threats to Neotropical potamodromous fish, causing blockages of migratory routes and loss of breeding areas in an increasing number of drainage systems. In this scenario, current data argue that the maintenance of free-flowing tributaries along fragmented watersheds would be an important strategy to the migratory fish conservation, both in panmixia situations and in scenarios with different coexisting stocks, as already reported for Prochilodus lineatus. This study analyzed microsatellite loci and mitochondrial haplotypes in samples of P. lineatus obtained in different years along the Cinzas River basin, as well as in the Capivara Reservoir (largest Reservoir in the Paranapanema main channel, upper Paraná River) and in the Tibagi River, all connected by free stretches, aiming to investigate the contributions of the Cinzas River basin to the population dynamics of migratory fish in the Capivara reservoir region. Both markers detected high genetic diversity levels and indicated different genetic stocks of P. lineatus along the Cinzas River basin, suggesting some temporal genetic structuring, as well as the mixture of these stocks in the sample from the Capivara reservoir and from other points, corroborating the relationships among stocks in this reservoir and its tributaries. systems scenario freeflowing flowing conservation P largest channel stretches region structuring points

https://doi.org/10.1590/1982-0224-2023-0080

Effective recommendations towards healthy routines to preserve mental health during the COVID-19 pandemic
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Pilz, Luísa K.

; Couto Pereira, Natividade S.

; Francisco, Ana Paula

; Carissimi, Alicia

; Constantino, Débora B.

; Caus, Letícia B.

; Abreu, Ana Carolina O.

; Amando, Guilherme R.

; Bonatto, Fernanda S.

; Carvalho, Paula V.V.

; Cipolla-Neto, José

; Harb, Ana

; Lazzarotto, Gabriela

; Marafiga, Joseane Righes

; Minuzzi, Luciano

; Montagner, Francisco

; Nishino, Fernanda A.

; Oliveira, Melissa A.B.

; dos Santos, Bruno G.T.

; Steibel, Eduardo G.

; Tavares, Patrice S.

; Tonon, André C.

; Xavier, Nicóli B.

; Zanona, Querusche Klippel

; Amaral, Fernanda G.

; Calcagnotto, Maria Elisa

; Frey, Benicio N.

; Hidalgo, Maria Paz

; Idiart, Marco

; Russomano, Thais

Brazilian Journal of Psychiatry

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apr 2022, Volume 44 N. 2 Pages 136 - 146

Abstract: En | Text: En | PDF: En

Objective: To assess the adherence to a set of evidence-based recommendations to support mental health during the coronavirus disease 2019 (COVID-19) pandemic and its association with depressive and anxiety symptoms. Methods: A team of health workers and researchers prepared the recommendations, formatted into three volumes (1: COVID-19 prevention; 2: Healthy habits; 3: Biological clock and sleep). Participants were randomized to receive only Volume 1 (control), Volumes 1 and 2, Volumes 1 and 3, or all volumes. We used a convenience sample of Portuguese-speaking participants over age 18 years. An online survey consisting of sociodemographic and behavioral questionnaires and mental health instruments (Patient Health Questionnaire-9 [PHQ-9] and Generalized Anxiety Disorder-7 [GAD-7]) was administered. At 14 and 28 days later, participants were invited to complete follow-up surveys, which also included questions regarding adherence to the recommendations. A total of 409 participants completed the study – mostly young adult women holding university degrees. Results: The set of recommendations contained in Volumes 2 and 3 was effective in protecting mental health, as suggested by significant associations of adherence with PHQ-9 and GAD-7 scores (reflecting anxiety and depression symptoms, respectively). Conclusion: The recommendations developed in this study could be useful to prevent negative mental health effects in the context of the pandemic and beyond.

https://doi.org/10.1590/1516-4446-2021-2109

Schools reopening and the COVID-19 pandemic: a case study from Macaé, Rio de Janeiro, Brazil
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POZZOBON, ALLAN P. B.

; PETRY, ANA C.

; ZILBERBERG, CARLA

; BARROS, CINTIA M. DE

; NEPOMUCENO-SILVA, JOSÉ L.

; FEITOSA, NATÁLIA M.

; GOMES NETO, LUPIS R.

; RODRIGUES, BRUNO C.

; BRINDEIRO, RODRIGO M.

; NOCCHI, KEITY JAQUELINE C.V.

; MURY, FLAVIA B.

; SOUZA-MENEZES, JACKSON DE

; SILVA, MANUELA L. DA

; MEDEIROS, MARCIO JOSÉ DE

; GESTINARI, RAQUEL S.

; ALVARENGA, ALESSANDRA S. DE

; SILVA, CARINA A.O.

; SANTOS, DANIELE G. DOS

; SILVESTRE, DIEGO HENRIQUE

; SOUSA, GRAZIELE F. DE

; ALMEIDA, JANIMAYRI F. DE

; SILVA, JHENIFER N. DA

; BRANDÃO, LAYZA M.

; DRUMMOND, LEANDRO O.

; CARPES, RAPHAEL M.

; SANTOS, RENATA C. DOS

; PORTAL, TAYNAN M.

; TANURI, AMILCAR

; NUNES-DA-FONSECA, RODRIGO

Anais da Academia Brasileira de Ciências

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2022, Volume 94 elocation e20211361

Abstract: En | Text: En | PDF: En

Abstract Since the first reported case of COVID-19 in Brazil, the public and private educational system started to close. Up to November 2020, scientific discussions about the return of schooling activities have been rarely performed by the national scientific community and police-makers. The great delay of school returning in Brazil contrasts with successful international strategies of school reopening worldwide and seems counterintuitive with the reopening of non-essential activities. Here, important issues to be considered before and during school reopening are reviewed and discussed. COVID-19 testing is essential to avoid disease spreading, but high cost of individual RT-qPCRs impairs an extensive testing strategy for school returning. To reduce costs and increase the speed of diagnosis, we tested the efficiency of a pooled-sample PCR strategy in a cohort of the educational staff in the city of Macaé/RJ, finding five asymptomatic individuals (0,66%) among the 754 people tested. Thus, a polled-sample PCR testing strategy of the educational staff might prevent infection spreading in schools at a reasonable cost. We discuss how our test strategy could be coupled with internationally recognized safety rules to allow for a safe school return and how countries from different world regions are dealing with educational activities during COVID-19 pandemic.

https://doi.org/10.1590/0001-3765202220211361

Seep hunting in the Santos Basin, Southwest Atlantic: sampling strategy and employed methods of the multidisciplinary cruise BIOIL 1
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Sumida, Paulo Y. G.

; Pellizari, Vivian H.

; Lourenço, Rafael A.

; Signori, Camila N.

; Bendia, Amanda G.

; Carrerette, Orlemir

; Nakamura, Fernanda M.

; Ramos, Raissa B.

; Bergamo, Gilberto

; Souza, Bruno H. M.

; Butarelli, Ana C. A.

; Passos, Júlia G.

; Dias, Rodolfo J. S.

; Maly, Mascimiliano

; Banha, Thomás N. S.

; Güth, Arthur Z.

; Soares, Luiza F.

; Perugino, Paula D. N.

; Santos, Felipe R.

; Santana, Frederico R.

; Mahiques, Michel M. de

Ocean and Coastal Research

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2022, Volume 70 Suppl. 2 elocation e22031

Abstract: En | Text: En | PDF: En

Abstract The continental margin off the southeastern Brazilian coast is punctuated by a series of geological-geomorphological features, such as subsurface saline diapirs and pockmarks at the seafloor interface, which evidence the abundant presence of oil and gas in the region. In several of these sites, hydrocarbons can be naturally released into the water column, areas are cold seep areas. These are marked by the presence of oil- and gas-dependent ecosystems, where specific organisms are able to fix carbon from hydrocarbon chemosynthesis. In addition, light hydrocarbon fluid flow through the sediment may build up authigenic carbonates that can be further colonized by cold-water corals, generating large carbonate mounds over geological time, normally positioned at the border of these pockmark features. The present work reports on a multidisciplinary oceanographic cruise carried out in the Santos Basin, SW Atlantic, to seek, map, and collect geological, chemical, and biological data from different deep-sea habitats. The cruise occurred in November 2019 on the R/V Alpha Crucis of the Oceanographic Institute of the University of São Paulo (IOUSP). We intended to discover and detail different geomorphological features, characterize free-living and symbiotic microorganisms, determine the chemosynthetic rates in relation to heterotrophic microbial production, and characterize the fauna and study their ecological and evolutionary links within and across ocean basins. All discoveries made during the cruise and their respective results will be presented separately in several papers that comprise this special volume.

https://doi.org/10.1590/2675-2824070.22077pygs

Genetic diversity and correlation between morphological traits of pequi fruits (Caryocar brasiliense Camb.) with and without thorns at the endocarp
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GOMES, BRUNO H.

; FARIA, MARCOS V.

; MENDES, MARIANA G.

; BONETTI, ANA MARIA

; O. JÚNIOR, ROBSON JOSÉ DE

; NOGUEIRA, ANA PAULA O.

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Suppl. 4 elocation e20210016

Abstract: En | Text: En | PDF: En

Abstract Morphological characteristics of pequi fruits (Caryocar brasiliense) allows us to obtain information for the conservation, breeding, and detect genetic variability. Thus, the aims of this research were to characterize the genetic diversity of Caryocar brasiliense that produce fruits with and without thorn at the endocarp; determine the important characters in the study of genetic diversity, and to estimate phenotypic and genotypic correlations. 80 fruits with thorns and 90 fruits without thorns were evaluated. Data were used for analysis: Euclidian distance as a measure of dissimilarity and the Tocher method for delimitation of groups; Principal Component Analysis, and genotypic and phenotypic correlations. Genetic dissimilarity of C. brasiliense ranged from 0.066 (B6-D6) to 0.908 (A14-B3). Tocher method allowed dividing the matrices into three groups, the dendrogram into five groups, and the principal components allowed the distribution in 8 groups. We observed 15 significant correlations for characters of fruit with thorns and 31 correlations for characters of fruit without thorns. The weight of the fruit (with thorns) and the pyrene yield (without thorns) are relevant correlations for production. The groupings generated allowed the classification of the matrices into distinct sets. Allowed the identification of potential producers plants that could be used in breeding programs.

https://doi.org/10.1590/0001-3765202220210016

10.

Physiological Response of Seeds of Crotalaria spectabilis under Drought and Heat Stress
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Nóbrega, Jackson Silva

; Silva, Lucy Gleide da

; Bezerra, Ana Carolina

; Bruno, Riselane de Lucena Alcântara

; Souto, Antônio Gustavo de Luna

; Silva, Toshik Iarley da

Brazilian Archives of Biology and Technology

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2022, Volume 65 elocation e22220145

Abstract: En | Text: En | PDF: En

Abstract This study evaluate the effect of drought and heat stress on the quality of C. spectabilis seeds. A completely randomized design in a 4×4 factorial scheme, referring to four osmotic potentials based on Polyethylene glycol (PEG 6000 = 0.0, -0.2, -0.4 and -0.8 MPa) and four temperatures (25, 30 and 35 ºC constant and alternating between 25-35 ºC), with four replications of 50 seeds per plot was used. The germination percentage, first count germination, germination speed index, average germination time, average germination speed, length and dry mass of the root, shoot and seedlings were evaluated. C. spectabilis is sensitive to drought stress during germination and seedling establishment, tolerating up to -0.2 MPa. The physiological quality of seeds is reduced with the decrease of osmotic potentials. The temperature range between 25 and 30 ºC are the one that provide better conditions for the germination of the seeds of this species.

https://doi.org/10.1590/1678-4324-2022220145

11.

Seed germination of a myrmecochorous plant endemic to the Brazilian semiarid region: the wolf is not so bad
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Fagundes, Marcilio

; Silva, Ana Paula Mota Fernandes

; Mayrink, Bruno Henrique Silva

; Figueiredo, Luiz Henrique Arimura

; Jorge, Alessandre Custódio

; Gomes, Ingrid Lara Vieira

Acta Botanica Brasilica

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2022, Volume 36 elocation e20220093

Abstract: En | Text: En | PDF: En

ABSTRACT Studies about seed dispersal and germination are important to understand patterns of plant distribution and abundance, and help establish strategies for environmental conservation. We evaluated the role of two different dispersers, the ant Atta laevigata and the maned wolf Chrysocyon brachyurus, in the germination of Copaifera arenicola seeds, a characteristically myrmecochorous plant species. Germination was evaluated for seeds subjected to four treatments: (1) seeds manipulated by the ant, (2) seeds ingested by the maned wolf, (3) seeds that had the elaiosome removed manually, and (4) seeds with elaiosome (unmanipulated seeds). Seeds manipulated by the ant and seeds that had the elaiosome removed manually required less time to germinate and had higher germination percentages (98.6% and 95.8%, respectively) than the other treatments. However, seeds ingested by the maned wolf also had a high germination percentage (87.7%), above that of unmanipulated seeds (34.7%). Probably, elaiosomes of unmanipulated seeds and small remnants of this structure that resist digestion by maned wolf can decrease to some extent seed germination. We argue that dispersal of C. arenicola seeds by the ant and by the maned wolf result in different patterns of seed distribution in the environment and that they have complementary roles in structuring plant populations.

https://doi.org/10.1590/1677-941x-abb-2022-0093

12.

Clinical validation of an in-house quantitative real time PCR assay for cytomegalovirus infection using the 1st WHO International Standard in kidney transplant patients
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Caurio, Cassia F.B.

; Allende, Odelta S.

; Kist, Roger

; Santos, Kênya L.

; Vasconcellos, Izadora C.S.

; Rozales, Franciéli P.

; Lana, Daiane F. Dalla

; Praetzel, Bruno M.

; Alegretti, Ana Paula

; Pasqualotto, Alessandro C.

Brazilian Journal of Nephrology

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dec 2021, Volume 43 N. 4 Pages 530 - 538

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Introdução: Citomegalovírus (CMV) é um dos agentes infecciosos mais comuns em pacientes com transplante de órgãos sólidos, com morbidade e mortalidade significativas. Objetivo: Este estudo visou estabelecer um limite para o início do tratamento preemptivo. Além disso, comparou o desempenho da antigenemia com os resultados da qPCR in house. Desenho do estudo: Este foi um estudo de coorte prospectivo realizado em 2017 em um centro único de transplante renal no Brasil. A validação clínica foi realizada comparando resultados de qPCR in house, com o padrão de atendimento na época (Antigenemia para CMV Pp65). A análise da curva ROC foi realizada para determinar o limite ideal para o início da terapia preemptiva baseado nos resultados do teste qPCR in house. Resultados: 232 amostras de 30 pacientes foram testadas com antigenemia e qPCR, das quais 163 (70,26%) foram concordantes (Coeficiente Kappa: 0,435, p<0,001; Correlação Spearman: 0,663). PCR permitiu diagnósticos precoces. O número médio de dias para o primeiro resultado positivo foi 50 (intervalo, 24-105) para antigenemia e 42 (intervalo, 24-74) para qPCR (p<0,001). A análise da curva ROC revelou que em um limite de 3.430 UI/mL (Log 3,54), qPCR teve sensibilidade de 97,06% e especificidade de 74,24% (AUC 0,92617 ± 0,0185, p<0,001), na previsão de 10 células/10(5) leucócitos por antigenemia e na decisão do médico de tratar. Conclusões: Antigenemia para CMV Pp65 e qPCR para CMV mostraram uma concordância aceitável e uma correlação moderada neste estudo. qPCR in house revelou-se um método preciso para determinar DNAemia do CMV em pacientes transplantados renais, obtendo resultados positivos semanas antes da antigenemia.

Abstract Introduction: Cytomegalovirus (CMV) is one of the most common agents of infection in solid organ transplant patients, with significant morbidity and mortality. Objective: This study aimed to establish a threshold for initiation of preemptive treatment. In addition, the study compared the performance of antigenemia with qPCR results. Study design: This was a prospective cohort study conducted in 2017 in a single kidney transplant center in Brazil. Clinical validation was performed by comparing in-house qPCR results, against standard of care at that time (Pp65 CMV Antigenemia). ROC curve analysis was performed to determine the ideal threshold for initiation of preemptive therapy based on the qPCR test results. Results: Two hundred and thirty two samples from 30 patients were tested with both antigenemia and qPCR, from which 163 (70.26%) were concordant (Kappa coefficient: 0.435, p<0.001; Spearman correlation: 0.663). PCR allowed for early diagnoses. The median number of days for the first positive result was 50 (range, 24-105) for antigenemia and 42 (range, 24-74) for qPCR (p<0.001). ROC curve analysis revealed that at a threshold of 3,430 IU/mL (Log 3.54), qPCR had a sensitivity of 97.06% and a specificity of 74.24% (AUC 0.92617 ± 0.0185, p<0.001), in the prediction of 10 cells/105 leukocytes by antigenemia and physician's decision to treat. Conclusions: CMV Pp65 antigenemia and CMV qPCR showed fair agreement and a moderate correlation in this study. The in-house qPCR was revealed to be an accurate method to determine CMV DNAemia in kidney transplant patients, resulting in positive results weeks before antigenemia.

https://doi.org/10.1590/2175-8239-jbn-2020-0214 3 downloads

13.

Persistent symptoms and decreased health-related quality of life after symptomatic pediatric COVID-19: A prospective study in a Latin American tertiary hospital
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Fink, Thais T.

; Marques, Heloisa H.S.

; Gualano, Bruno

; Lindoso, Livia

; Bain, Vera

; Astley, Camilla

; Martins, Fernanda

; Matheus, Denise

; Matsuo, Olivia M.

; Suguita, Priscila

; Trindade, Vitor

; Paula, Camila S.Y.

; Farhat, Sylvia C.L.

; Palmeira, Patricia

; Leal, Gabriela N.

; Suzuki, Lisa

; Odone Filho, Vicente

; Carneiro-Sampaio, Magda

; Duarte, Alberto José S.

; Antonangelo, Leila

; Batisttella, Linamara R.

; Polanczyk, Guilherme V.

; Pereira, Rosa Maria R.

; Carvalho, Carlos Roberto R.

; Buchpiguel, Carlos A.

; Latronico, Ana Claudia

; Seelaender, Marilia

; Silva, Clovis Artur

; Pereira, Maria Fernanda B.

; Sallum, Adriana M. E.

; Brentani, Alexandra V. M.

; Neto, Álvaro José S.

; Ihara, Amanda

; Santos, Andrea R.

; Canton, Ana Pinheiro M.

; Watanabe, Andreia

; Santos, Angélica C. dos

; Pastorino, Antonio C.

; Franco, Bernadette D. G. M.

; Caruzo, Bruna

; Ceneviva, Carina

; Martins, Carolina C. M. F.

; Prado, Danilo

; Abellan, Deipara M.

; Benatti, Fabiana B.

; Smaria, Fabiana

; Gonçalves, Fernanda T.

; Penteado, Fernando D.

; Castro, Gabriela S. F. de

; Gonçalves, Guilherme S.

; Roschel, Hamilton

; Disi, Ilana R.

; Marques, Isabela G.

; Castro, Inar A.

; Buscatti, Izabel M.

; Faiad, Jaline Z.

; Fiamoncini, Jarlei

; Rodrigues, Joaquim C.

; Carneiro, Jorge D. A.

; Paz, Jose A.

; Ferreira, Juliana C.

; Ferreira, Juliana C. O.

; Silva, Katia R.

; Bastos, Karina L. M.

; Kozu, Katia

; Cristofani, Lilian M.

; Souza, Lucas V. B.

; Campos, Lucia M. A.

; Silva Filho, Luiz Vicente R. F.

; Sapienza, Marcelo T.

; Lima, Marcos S.

; Garanito, Marlene P.

; Santos, Márcia F. A.

; Dorna, Mayra B.

; Aikawa, Nadia E.

; Litvinov, Nadia

; Sakita, Neusa K.

; Gaiolla, Paula V. V.

; Pasqualucci, Paula

; Toma, Ricardo K.

; Correa-Silva, Simone

; Sieczkowska, Sofia M.

; Imamura, Marta

; Forsait, Silvana

; Santos, Vera A.

; Zheng, Yingying

Clinics

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2021, Volume 76 elocation e3511

Abstract: En | Text: En | PDF: En

OBJECTIVES: To prospectively evaluate demographic, anthropometric and health-related quality of life (HRQoL) in pediatric patients with laboratory-confirmed coronavirus disease 2019 (COVID-19) METHODS: This was a longitudinal observational study of surviving pediatric post-COVID-19 patients (n=53) and pediatric subjects without laboratory-confirmed COVID-19 included as controls (n=52) was performed. RESULTS: The median duration between COVID-19 diagnosis (n=53) and follow-up was 4.4 months (0.8-10.7). Twenty-three of 53 (43%) patients reported at least one persistent symptom at the longitudinal follow-up visit and 12/53 (23%) had long COVID-19, with at least one symptom lasting for >12 weeks. The most frequently reported symptoms at the longitudinal follow-up visit were headache (19%), severe recurrent headache (9%), tiredness (9%), dyspnea (8%), and concentration difficulty (4%). At the longitudinal follow-up visit, the frequencies of anemia (11% versus 0%, p=0.030), lymphopenia (42% versus 18%, p=0.020), C-reactive protein level of >30 mg/L (35% versus 0%, p=0.0001), and D-dimer level of >1000 ng/mL (43% versus 6%, p=0.0004) significantly reduced compared with baseline values. Chest X-ray abnormalities (11% versus 2%, p=0.178) and cardiac alterations on echocardiogram (33% versus 22%, p=0.462) were similar at both visits. Comparison of characteristic data between patients with COVID-19 at the longitudinal follow-up visit and controls showed similar age (p=0.962), proportion of male sex (p=0.907), ethnicity (p=0.566), family minimum monthly wage (p=0.664), body mass index (p=0.601), and pediatric pre-existing chronic conditions (p=1.000). The Pediatric Quality of Live Inventory 4.0 scores, median physical score (69 [0-100] versus 81 [34-100], p=0.012), and school score (60 [15-100] versus 70 [15-95], p=0.028) were significantly lower in pediatric patients with COVID-19 at the longitudinal follow-up visit than in controls. CONCLUSIONS: Pediatric patients with COVID-19 showed a longitudinal impact on HRQoL parameters, particularly in physical/school domains, reinforcing the need for a prospective multidisciplinary approach for these patients. These data highlight the importance of closer monitoring of children and adolescents by the clinical team after COVID-19.

https://doi.org/10.6061/clinics/2021/e3511

14.

Transcriptomic analysis reveals that mTOR pathway can be modulated in macrophage cells by the presence of cryptococcal cells
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Piffer, Alícia C.

; Santos, Francine M. dos

; Thomé, Marcos P.

; Diehl, Camila

; Garcia, Ane Wichine Acosta

; Kinskovski, Uriel Perin

; Schneider, Rafael de Oliveira

; Gerber, Alexandra

; Feltes, Bruno César

; Schrank, Augusto

; Vasconcelos, Ana Tereza R.

; Lenz, Guido

; Kmetzsch, Lívia

; Vainstein, Marilene H.

; Staats, Charley C.

Genetics and Molecular Biology

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2021, Volume 44 N. 3 elocation e20200390

Abstract: En | Text: En | PDF: En

Abstract Cryptococcus neoformans and Cryptococcus gattii are the etiological agents of cryptococcosis, a high mortality disease. The development of such disease depends on the interaction of fungal cells with macrophages, in which they can reside and replicate. In order to dissect the molecular mechanisms by which cryptococcal cells modulate the activity of macrophages, a genome-scale comparative analysis of transcriptional changes in macrophages exposed to Cryptococcus spp. was conducted. Altered expression of nearly 40 genes was detected in macrophages exposed to cryptococcal cells. The major processes were associated with the mTOR pathway, whose associated genes exhibited decreased expression in macrophages incubated with cryptococcal cells. Phosphorylation of p70S6K and GSK-3β was also decreased in macrophages incubated with fungal cells. In this way, Cryptococci presence could drive the modulation of mTOR pathway in macrophages possibly to increase the survival of the pathogen.

https://doi.org/10.1590/1678-4685-gmb-2020-0390 4 downloads

15.

PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD FROM Eucalyptus grandis PRODUCED BY UREA FORMALDEHYDE RESIN WITH SiO2 NANOPARTICLES
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Valle, Ana C. M.

; Ferreira, Bruno S.

; Prates, Glaucia A.

; Goveia, Danielle

; Campos, Cristiane I. de

Engenharia Agrícola

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jun 2020, Volume 40 N. 3 Pages 289 - 293

Abstract: En | Text: En | PDF: En

ABSTRACT The use of nanoparticles appears to be a feasible option for improving the quality of a range of wood-based products. Studies show that they can improve both the physical and mechanical properties of wood and wood-based products. This preliminary study aimed to analyze the influence of SiO2 nanoparticles on the physical and mechanical properties of wood particleboard. To this end that, panels were produced without the addition of SiO2 nanoparticles and with the addition of 4% by mass of the urea formaldehyde adhesive used for its production. The results showed that panels produced with the nanoparticles 42% reduction in thickness swelling of the panel. Therefore, the dimensional stability of the panels without decreasing mechanical properties, even when used in small proportions.

https://doi.org/10.1590/1809-4430-eng.agric.v40n3p289-293/2020 636 downloads

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