Pesquisa | SciELO

ABSTRACT Four treatments were established to evaluate the effect of delayed first exogenous feeding and subsequent feeding periods on the development of goldfish larvae. The fasting and feeding periods were arranged as follows: T1 (0DFA:30DF), T2 (4DFA:26DF), T3 (8DFA:22DF), and T4 (12DFA:18DF), where DFA are the days of fasting and DF are the days of feeding. The larvae were kept in community tanks for each repetition, with 75 larvae per tank (3.75 larvae L−1). There was no significant difference in total length or final weight between larvae submitted to 0, 4, and 8 days of feed deprivation. However, larvae submitted to 12 DFA had higher values of the same variables than the other treatments. No significant difference in larval survival was observed between T1, T2, and T3, but T4 negatively influenced survival. Under the conditions evaluated, the point of no return was 4 DFA. Dead larvae were partly eaten in the fasting treatments. The delayed first feeding should be avoided in large-scale productions since it significantly reduces survival during cultivation. This article results from research funded by the Pescarte Environmental Education Project (PEA/IBAMA).

https://doi.org/10.3856/vol51-issue2-fulltext-2993

How many species of Mollusca are there in Brazil? A collective taxonomic effort to reveal this still unknown diversity
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Machado, Fabrizio M.

; Miranda, Marcel S.

; Salvador, Rodrigo B.

; Pimenta, Alexandre D.

; Côrtes, Mariana O.

; Gomes, Jaime A.J.

; Miyahira, Igor C.

; Agudo-Padrón, Ignacio

; Oliveira, Cléo D.C.

; Caetano, Carlos H.S.

; Coelho, Paulo R.S.

; D’Ávila, Sthefane

; Arruda, Eliane P. de

; Almeida, Sérgio M. de

; Gomes, Suzete R.

; Alvim, Juliana

; Galvão-Filho, Hilton

; L. Ferreira-Júnior, Augusto

; Marques, Rodrigo C.

; Martins, Inês

; Souza, Leonardo S. de

; Arruda, Janine O.

; Cavallari, Daniel C.

; Santos, Sonia B. dos

; Pedro, Natan C.

; Salles, Anna C. de A.

; Dornellas, Ana P.S.

; Lima, Tarcilla C. de

; Amaral, Vanessa S. do

; Silva, Fernanda S.

; Passos, Flávio D.

; Thiengo, Silvana S.

; Leite, Tatiana S.

; Simone, Luiz R.L.

Zoologia (Curitiba)

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2023, Volume 40 elocation e23026

Resumo: En | Texto: En | PDF: En

ABSTRACT The expression ‘you need to know to conserve’ is a well-known cliche among biologists. Documenting the richness of a group of organisms is the first step towards understanding biodiversity and preparing efficient conservation plans. In this context, many efforts have been made to quantify the number of species on Earth and estimate the number of species still unknown to science. A few countries have complete and integrated databases estimating the approximate number of species recorded for their territory, particularly in the Global South. In Brazil, a country of continental dimensions, revealing the richness of the second most diverse clade of invertebrates (=Mollusca) has been a goal of taxonomists. Recently, in an unprecedented, collective, and integrated effort among Brazilian malacologists, it was possible to estimate how many valid species of molluscs are there in Brazil. In this effort, more than 30 mollusc experts joined together to update the Taxonomic Catalogue of the Brazilian Fauna (TCBF), a governmental website that allows a quick and real-time updating of all Metazoan. So far, more than 5,000 updates have been made in TCBF, indicating the presence of 3,552 valid species of molluscs in Brazil, distributed among the main clades as follows: Caudofoveata (10 spp.), Solenogastres (6 spp.), Polyplacophora (35 spp.), Scaphopoda (43 spp.), Cephalopoda (92 spp.), Bivalvia (629 spp.) and Gastropoda (2,737 spp.). The present study, in addition to demonstrating for the first time the richness of Brazilian molluscs, also presents the state of the art of this important phylum of invertebrates highlighting its most representative and neglected groups.

https://doi.org/10.1590/s1984-4689.v40.e23026

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 Nº 1 elocation e230007

Resumo: En Pt | Texto: 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

Mutations of the c-KIT gene in canine mast cell tumors and respective nodal metastases classified according to mast cell infiltration
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Rassele, Alice C.

; Souza, Larissa M.

; Gorza, Leonardo L.

; Giuliano, Antônio

; Flecher, Mayra C.

; Horta, Rodrigo S.

Pesquisa Veterinária Brasileira

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2023, Volume 43 elocation e07140

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

ABSTRACT: The molecular background of canine mast cell tumors (MCT) has been extensively investigated; however, the dynamic molecular changes that occur during carcinogenesis and metastasis are not fully understood. This study aimed to evaluate the incidence of mutations in the c-KIT proto-oncogene in canine MCTs and relative draining regional lymph nodes. Suspected or confirmed lymph node metastasis was classified accordingly to the HN Weishaar classification. The study included 34 dogs diagnosed with MCT; 19 patients were enrolled prospectively. These dogs had the primary MCT and regional lymph node resected and analyzed simultaneously. The second group was evaluated retrospectively and included fifteen patients resectioning the primary MCT without evaluation of regional lymph node. Analyzes of c-KIT mutation were performed for all primary MCTs and, in the first group, compared between primary MCT and HN-classified metastasis. Internal tandem duplications (ITD) in exon 11 of the c-KIT gene were detected in 20% of patients. Ten of the nineteen patients (52%) in the first group presented mast cell infiltration in the regional lymph node, and ITD in exon 11 of the c-KIT gene was detected in five and two dogs from Groups 1 and 2, respectively. ITD c-KIT mutations are common in canine MCT and may be found in the draining lymph node metastases/mast cell infiltrates in the absence of mutation of the primary tumor. Evaluation of c-KIT mutation in the primary tumor and metastases may be informative for defining both prognosis and therapeutic options in MCT cases.

RESUMO: O perfil molecular do mastocitoma (MCT) tem sido bastante investigado, no entanto as dinâmicas moleculares que ocorrem durante a carcinogênese e metástase desta neoplasia não estão bem esclarecidas. O objetivo desse estudo foi avaliar a incidência de mutações no proto-oncogene c-KIT em MCTs caninos e respectivos linfonodos regionais. Os casos suspeitos ou confirmados de metástase para os linfonodos, foram classificados de acordo com a classificação HN de Weishaar. O estudo incluiu 34 cães diagnosticados com MCT e, desses, 19 pacientes foram avaliados de maneira prospectiva, em que o tumor primário e o linfonodo regional foram ressecados e analisados simultaneamente. O segundo grupo foi avaliado retrospectivamente e incluiu quinze pacientes que tiveram ressecção do MCT primário sem avaliação de linfonodo regional. A análise da mutação c-KIT foi realizada para todos os MCTs primários e, no primeiro grupo, comparados entre MCT primário e metástase classificada pelo sistema HN. Duplicações internas em tandem (DIT), no exon 11 do gene c-KIT, foram detectadas em um total de 20% dos pacientes. Dez dos dezenove pacientes (52%) do primeiro grupo apresentavam infiltração de mastócitos no linfonodo regional, e DIT no exon 11 do gene c-KIT foram identificadas em cinco e dois cães dos Grupos 1 e 2, respectivamente. Mutações do tipo DIT no gene c-KIT são comuns no MCT canino e podem estar presentes nas metástases/infiltrados de mastócitos na ausência de mutação do tumor primário. A avaliação da mutação no gene c-KIT no tumor primário e metástases pode ser informativa para definir tanto o prognóstico quanto as opções terapêuticas em casos de MCT.

https://doi.org/10.1590/1678-5150-pvb-7140

Isso a marca não o mostra: omissões e distorções comunicacionais empresariais à luz do imaginário
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Torres, Leonardo

; Souza, Rafael Rodrigues de

Intercom: Revista Brasileira de Ciências da Comunicação

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2023, Volume 46 elocation e2023135

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

Abstract We propose a symbolic investigation of two publications posted on Instagram by Heineken and Carrefour. This choice was made because they represent the idea of “political correctness”. The objective is to analyze these communications from an imaginary theories perspective, as suggested by M. Contrera, G. Durand, C. Jung, and others, as this action allows the identification of hidden aspects in the publications and the perception of what information is there, however, in addition to the obviousness of commercial interests that aim to reinforce the brand’s good public reputation. Our conclusions suggest that it is possible to change this biased perception by building a critical mass sufficiently qualified to recognize these mechanisms that lead to communication one-sidedness.

Resumen Se propone la investigación simbólica de dos publicaciones en Instagram por Heineken y Carrefour. Esta elección se hizo porque representan la idea de “corrección política”. El objetivo es analizar estas comunicaciones a la luz de teorías imaginarias, como lo sugieren M. Contrera, G. Durand, C. Jung y otros, ya que esta acción permite identificar aspectos ocultos en las publicaciones y la percepción de qué información hay allí, sin embargo, además de la evidencia de intereses comerciales que apuntan a reforzar la buena reputación pública de la marca. Las conclusiones sugieren que es posible cambiar esta percepción sesgada construyendo una masa crítica, suficientemente calificada para reconocer estos mecanismos que conducen a la unilateralidad de la comunicación.

Resumo Propõe-se a investigação simbólica de duas publicações postadas no Instagram pela Heineken e pelo Carrefour. Essa escolha se deu por estas representarem a ideia do “politicamente correto”. O objetivo é analisar estas comunicações à luz das teorias do imaginário, conforme sugerem M. Contrera, G. Durand, C. Jung e outros, pois tal ação permite a identificação de aspectos escamoteados nas publicações e a percepção de quais informações estão ali, porém, além das obviedades dos interesses comerciais que visam reforçar a boa reputação pública da marca. As conclusões sugerem que é possível a mudança dessa percepção enviesada a partir da construção de uma massa crítica, suficientemente capacitada para reconhecer estes mecanismos que levam a uma unilateralidade comunicacional.

https://doi.org/10.1590/1809-58442023135pt

Palm density and grazing effects on plant communities: implications for livestock management in a Butia palm grove communities
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SOUZA, GABRIELA C.

; JARENKOW, JOÃO ANDRÉ

; RAGUSE-QUADROS, MATEUS

; MALDONADO, GIOVANNA

; URRUTH, LEONARDO M.

; SOSINSKI JR, ÊNIO E.

; OLIVEIRA, JULIANO M.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 3 elocation e20220853

Resumo: En | Texto: En | PDF: En

Abstract Some grasslands in ecotones with forests tend to be encroached by woody species, because of changes in climate and land use. Such structural changes in vegetation can be facilitated when the grassland community presents an autochthonous arboreal component, like Butia palms. We aim to identify the responses of taxonomic and functional diversity on grassland community with the occurrence of arborescent/arboreal species (autochthonous and encroaching) to palm density and grazing intensity. The study was conducted in a Butia odorata palm grove under cattle management, in Southern Brazil. To assess the taxonomic and functional composition we performed ordinations analysis with the vegetational data and using path analysis we assessed the causal relationships between variables of interest. Density of Butia odorata and woody plants were strongly positive related, suggesting a facilitation process in the establishment of arborescent plants on the grassland matrix. The abundance of less palatable plants and grazing pressure were inversely related, indicating a selection process induced by higher grazing intensity. We suggest that the grazing intensity management must be based on the autochthonous tree density, applying higher grazing intensity in areas with higher density of encroaching plants, in addition to maintaining other regions conducive to Butia palm regeneration through fallows. use component palms arborescentarboreal Brazil interest related matrix fallows

https://doi.org/10.1590/0001-3765202320220853

Synthesis and Biological Evaluation of Novel 1,3-Benzoxathiol-2-one Sulfonamides against Toxic Activities of the Venom of Bothrops jararaca and Bothrops jararacussu Snakes
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Chazin, Eliza L.

; Martins, Leonardo B.

; Souza, Marcus Vinícius N. de

; Gomes, Claudia Regina B.

; Silva, Ana Cláudia R. da

; Branco, Marcelly C.

; Sanchez, Eladio F.

; Fuly, André L.

; Vasconcelos, Thatyana R. A.

Journal of the Brazilian Chemical Society

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Jan 2022, Volume 33 Nº 1 Páginas 2 - 12

Resumo: En | Texto: En | PDF: En

This work describes the synthesis of new 1,3-benzoxathiol-2-one sulfonamides and evaluation of their ability to inhibit some in vitro (coagulant, proteolytic and hemolytic) and in vivo (hemorrhagic, edematogenic and lethality) toxic activities of Bothrops jararaca and Bothrops jararacussu venoms. Compounds have been synthesized from the coupling of intermediate 5-amino-6 methoxybenzo[d][1,3]oxathiol-2-one 4 with benzenesulfonyl chlorides. Characterization of the products was achieved by nuclear magnetic resonance (NMR) and electrospray ionization mass spectra (ESI-MS) techniques. Biological assay results have shown that most of compounds inhibited the main toxic activities of the venom of the two snake species. Compound 5b (N-(6 methoxy-2 oxobenzo[d][1,3]oxathiol-5-yl)-4-nitrobenzenesulfonamide) was the most efficient in inhibiting hemolysis of B. jararaca, and coagulation and proteolysis induced by both venoms. For in vivo activities, all compounds inhibited the edema, from 35 to 72%, and most of them exhibited antihemorrhagic and antilethality activities. Thus, the results pointed to the biological potential of these compounds, being promising molecules to treat envenomation by these snakes as well as to aid the current antivenom serum therapy.

https://doi.org/10.21577/0103-5053.20210119

Fire ants: What do rural and urban areas show us about occurrence, diversity, and ancestral state reconstruction?
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Ramalho, Manuela de O.

; Menino, Leonardo

; Souza, Rodrigo F.

; Kayano, Débora Y.

; Alves, Juliana M. C.

; Harakava, Ricardo

; Nagatani, Victor H.

; Silva, Otávio G. M.

; Bueno, Odair C.

; Morini, Maria S. C.

Genetics and Molecular Biology

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2022, Volume 45 Nº 1 elocation e20210120

Resumo: En | Texto: En | PDF: En

Abstract In South America, Solenopsis saevissima and S. invicta are the most common fire ants. Nests are founded in areas under anthropic interference like urban or rural areas, but S. invicta is found preferentially in those with the greatest anthropic interference. However, we do not know the rates at which they exist in anthropized areas next to high density of native vegetation. Areas with 60 to 90% of native Atlantic Forest were selected to verify the occurrence of both species in rural and urban areas. We investigated the molecular diversity and applied the reconstruction of the ancestral state analysis for each species. A total of 186 nests were analyzed and we found that the two species had the same proportion in the urban area. However, S. saevissima had a higher rate of prevalence in the rural area, in addition to having a greater number of haplotypes and ancestry associated with this type of habitat for the region. S. invicta had the same number of haplotypes in both rural and urban regions, and less haplotypic diversity. We conclude that S. saevissima is a species typically associated with rural areas and S. invicta, although present, is not dominant in urban areas.

https://doi.org/10.1590/1678-4685-gmb-2021-0120

Memory elicitation, T-cell response and antibody production: an independent study of an inactivated entire virus vaccine (Coronavac)
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SOUZA-SILVA, GUILHERME ANTONIO DE

; AQUINO, RODRIGO CESAR A. DE

; SOUSA, GEORON F. DE

; BARROS, BÁRBARA RAFAELA S.

; LIMA, MARÍLLIA RAPHAELLA C.F. DE

; CRUZ, LEONARDO C.O.

; MARCOS, BIANCA F. SÃO

; SILVA, ANNA JÉSSICA D.

; TALES, APARECIDA VIRGÍNIA S.

; DINIZ, MADI V.

; LIMA, MÔNICA MARIA C.

; SÁ, IGOR W.A. DE

; RODRIGUES, FÁBIO AUGUSTO C.

; SOUZA, EDSON B. DE

; NASCIMENTO, ARIONE V. DO

; VIEIRA, AMANDA M.

; CARVALHO, BRUNO M. DE

; CAMPELO JÚNIOR, EVÔNIO B.

; FREITAS, ANTONIO CARLOS DE

; MELO, CRISTIANE M.L. DE

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Nº 3 elocation e20211590

Resumo: En | Texto: En | PDF: En

Abstract Health professionals working to mitigate the COVID-19 pandemic are one of the main risk groups for the disease, being prioritized for vaccination. Considering this, the aim of this study was to analyze the immune response of these professionals immunized with CoronaVac in the first and second doses. Blood samples were collected after the first and second doses of the vaccine (CoronaVac) and used to investigate hematological and biochemical parameters, analysis of immunoglobulin production, cytokines, and gene expression profile, as well as the identification of subsets of immune cells. Post-first dose immunological phenotypic memory (CD27+) profiles (T CD4+, TCD8+ and CD19+) showed a significant increase, as did Monocyte APCs (CD80+HLA-DR+) in relation to the second dose. The cytokines IL-2, IL-6 and IFN-° showed increased values in relation to the other analyzed cytokines. The Th2/Th17 profile in the second dose was characterized by gene expression analysis. The production of IgM and IgG after vaccination showed statistically significant values in the comparison between doses. CoronaVac showed activation of APCs monocytes, memory response of T and B lymphocytes, with immunoglobulins production. This set of responses is characterized by the Th2/Th17 immunological profile.

https://doi.org/10.1590/0001-3765202220211590

10.

Cystic nephroma in pediatrics
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De Souza, Leonardo M. F.

; De Q. Turíbio, Débora D. C.

; De Souza, Jeovana P. F.

; Oliveira, Raiane S.

; Lopes, Isadora C.

; Da C. Dantas, Ana K.

; Cruz, Thais M.

; De Azevedo, Fabio M.

Andes pediatrica

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Out 2021, Volume 92 Nº 5 Páginas 754 - 759

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

Abstract: Introduction: Cystic nephroma is a rare benign renal tumor of uncertain etiology. In children, it can manifest as a palpable abdominal mass, hematuria, and recurrent urinary infections. Imaging tests such as ultra sound and computed tomography assist in the diagnosis, but confirmation is made through anatomopathological study. Treatment is surgical and may be partial or total nephrectomy, with a good prognosis. Objective: To report a rare case of pediatric cystic nephroma, its clinical manifestations, radiological and histopathological aspects, as well as the treatment used and its evolution. Clinical Case: Pre-school, male, with a history of recurrent urinary infections in the first year of life. At 2 years and 8 months, he presented nodulation in the right hypochondrium with local pain on palpation, associated with urinary disorders and hematuria. An ultrasonography showing enlarged right kidney due to multiseptated cystic formation. Computed tomography showing multiloculated cystic expan sive formation in the right kidney. At 2 years and 10 months, he underwent partial right nephrec tomy for excision and anatomopathological study, which was compatible with Cystic Nephroma. He evolved with regression of hematuria and recurrent episodes of urinary infections, maintaining renal function preserved. Currently, at 4 years and 6 months, asymptomatic. Conclusions: Cystic nephro ma is a rare entity, generally with a good prognosis. The association of clinical findings, radiological images, and anatomopathological study are fundamental for the establishment of diagnosis and a better definition of therapeutic conduct.

Resumen: Introducción: El nefroma quístico es un tumor renal benigno raro, de etiología incierta. En niños puede manifes tarse como una masa abdominal palpable, hematuria e infecciones urinarias recurrentes. Exámenes de imagen como ultrasonografía y tomografía computadorizada ayudan en el diagnóstico, sin embar go, la confirmación se realiza mediante el estudio anatomopatológico. El tratamiento es quirúrgico, pudiendo ser nefrectomía parcial o total, con buen diagnóstico. Objetivo: Describir un caso raro de nefroma quístico pediátrico, sus manifestaciones clínicas, aspectos radiológicos e histopatológicos, así como tratamiento y su evolución. Caso Clínico: Preescolar, sexo masculino, con historia clínica de infecciones urinarias de repetición en el primer año de vida. A los 2 años y 8 meses, presentó nodulación en hipocondrio derecho con dolor local a la palpación, asociado a molestias disúricas y hematuria. La ecografía mostró un riñón derecho aumentado de volumen por formación quística multiseptada. La tomografía computadorizada demostró formación expansiva quística multiocula- da en el riñón derecho. A los 2 años y 10 meses, realizó nefrectomía parcial derecha para exéresis y estudio anatomopatológico, compatible con nefroma quístico. Evolucionó con regresión de la hema turia y de los episodios recurrentes de infecciones urinarias, manteniendo función renal preservada. Actualmente, con 4 años y 6 meses, asintomático. Conclusiones: El nefroma quístico es una entidad rara, en general de buen pronóstico. La asociación de hallazgos clínicos, imágenes radiológicas y es tudio anatomopatológico son fundamentales para el establecimiento diagnóstico y mejor definición de la conducta terapéutica.

https://doi.org/10.32641/andespediatr.v92i5.2622 35 downloads

11.

Diretrizes da Sociedade Brasileira de Cardiologia sobre Angina Instável e Infarto Agudo do Miocárdio sem Supradesnível do Segmento ST – 2021
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Nicolau, José Carlos

; Feitosa Filho, Gilson Soares

; Petriz, João Luiz

; Furtado, Remo Holanda de Mendonça

; Précoma, Dalton Bertolim

; Lemke, Walmor

; Lopes, Renato Delascio

; Timerman, Ari

; Marin Neto, José A.

; Bezerra Neto, Luiz

; Gomes, Bruno Ferraz de Oliveira

; Santos, Eduardo Cavalcanti Lapa

; Piegas, Leopoldo Soares

; Soeiro, Alexandre de Matos

; Negri, Alexandre Jorge de Andrade

; Franci, Andre

; Markman Filho, Brivaldo

; Baccaro, Bruno Mendonça

; Montenegro, Carlos Eduardo Lucena

; Rochitte, Carlos Eduardo

; Barbosa, Carlos José Dornas Gonçalves

; Virgens, Cláudio Marcelo Bittencourt das

; Stefanini, Edson

; Manenti, Euler Roberto Fernandes

; Lima, Felipe Gallego

; Monteiro Júnior, Francisco das Chagas

; Correa Filho, Harry

; Pena, Henrique Patrus Mundim

; Pinto, Ibraim Masciarelli Francisco

; Falcão, João Luiz de Alencar Araripe

; Sena, Joberto Pinheiro

; Peixoto, José Maria

; Souza, Juliana Ascenção de

; Silva, Leonardo Sara da

; Maia, Lilia Nigro

; Ohe, Louis Nakayama

; Baracioli, Luciano Moreira

; Dallan, Luís Alberto de Oliveira

; Dallan, Luis Augusto Palma

; Mattos, Luiz Alberto Piva e

; Bodanese, Luiz Carlos

; Ritt, Luiz Eduardo Fonteles

; Canesin, Manoel Fernandes

; Rivas, Marcelo Bueno da Silva

; Franken, Marcelo

; Magalhães, Marcos José Gomes

; Oliveira Júnior, Múcio Tavares de

; Filgueiras Filho, Nivaldo Menezes

; Dutra, Oscar Pereira

; Coelho, Otávio Rizzi

; Leães, Paulo Ernesto

; Rossi, Paulo Roberto Ferreira

; Soares, Paulo Rogério

; Lemos Neto, Pedro Alves

; Farsky, Pedro Silvio

; Cavalcanti, Rafael Rebêlo C.

; Alves, Renato Jorge

; Kalil, Renato Abdala Karam

; Esporcatte, Roberto

; Marino, Roberto Luiz

; Giraldez, Roberto Rocha Corrêa Veiga

; Meneghelo, Romeu Sérgio

; Lima, Ronaldo de Souza Leão

; Ramos, Rui Fernando

; Falcão, Sandra Nivea dos Reis Saraiva

; Dalçóquio, Talia Falcão

; Lemke, Viviana de Mello Guzzo

; Chalela, William Azem

; Mathias Júnior, Wilson

Arquivos Brasileiros de Cardiologia

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Jul 2021, Volume 117 Nº 1 Páginas 181 - 264

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

https://doi.org/10.36660/abc.20210180 3052 downloads

12.

Validation of an UHPLC-MS/MS Method for the Determination of Malachite Green, Leucomalachite Green, Crystal Violet, and Leucocrystal Violet in Shrimp, Fish, and Salmon Muscle Using a Modified QuEChERS Approach
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Rocha, Diego G.

; Souza, Leonardo F. de

; Lana, Mary Ane G.

; Silva, Thaís M. L. da

; Assis, Débora C. S. de

Journal of the Brazilian Chemical Society

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Abr 2021, Volume 32 Nº 4 Páginas 722 - 731

Resumo: En | Texto: En | PDF: En

A quantitative and confirmatory method for detecting the presence of triphenylmethane dyes in shrimp muscle using ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) and a quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction approach was validated. The method exhibited linearity and selectivity and the coefficient of determination (R2) was higher than 0.95 for all studied analytes. Limits of detection (LODs) varied from 0.32 to 0.44 µg kg-1 and the limit of quantification (LOQ) was determined to be 0.5 µg kg-1 for all studied analytes. The trueness, precision, decision limits (CCα), detection capability (CCβ) and uncertainty presented adequate performance. In addition to the validation in shrimp muscle, fish and salmon muscle were also satisfactory validated as an extension of scope. The suitability of the proposed method was also evaluated through an interlaboratory proficiency test, in which satisfactory results were obtained. The fully validated method is thus suitable for the analysis of triphenylmethane dyes in shrimp, fish, and salmon muscle.

https://doi.org/10.21577/0103-5053.20200224 225 downloads

13.

Efeitos do Exercício Aeróbico Tardio na Remodelação Cardíaca de Ratos com Infarto do Miocárdio Pequeno
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Souza, Lidiane M.

; Okoshi, Marina P.

; Gomes, Mariana J.

; Gatto, Mariana

; Rodrigues, Eder A.

; Pontes, Thierres H. D.

; Damatto, Felipe C.

; Oliveira, Leiliane R. S.

; Borim, Patrícia Aparecida

; Lima, Aline R. R.

; Zornoff, Leonardo A. M.

; Okoshi, Katashi

; Pagan, Luana U.

Arquivos Brasileiros de Cardiologia

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Abr 2021, Volume 116 Nº 4 Páginas 784 - 792

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

Resumo Fundamento: O exercício físico tem sido considerado uma importante terapia não farmacológica para a prevenção e tratamento das doenças cardiovasculares. No entanto, seus efeitos na remodelação cardíaca leve não são claros. Objetivo: Avaliar a influência do exercício aeróbico sobre a capacidade funcional, estrutura cardíaca, função ventricular esquerda (VE) e expressão gênica das subunidades da NADPH oxidase em ratos com infarto do miocárdio pequeno (IM). Métodos: Três meses após a indução do IM, ratos Wistar foram divididos em três grupos: Sham; IM sedentário (IM-SED); e IM exercício aeróbico (IM-EA). Os ratos se exercitaram em uma esteira três vezes por semana durante 12 semanas. Um ecocardiograma foi realizado antes e após o treinamento. O tamanho do infarto foi avaliado por histologia e a expressão gênica por RT-PCR. O nível de significância para análise estatística foi estabelecido em 5%. Resultados: Ratos com IM menor que 30% da área total do VE foram incluídos no estudo. A capacidade funcional foi maior no IM-EA do que nos ratos Sham e IM-SED. O tamanho do infarto não diferiu entre os grupos. Ratos infartados apresentaram aumento do diâmetro diastólico e sistólico do VE, diâmetro do átrio esquerdo e massa do VE, com disfunção sistólica. A espessura relativa da parede foi menor no grupo IM-SED do que nos grupos IM-EA e Sham. A expressão gênica das subunidades NADPH oxidase NOX2, NOX4, p22phox e p47phox não diferiu entre os grupos. Conclusão: Infarto do miocárdio pequeno altera a estrutura cardíaca e a função sistólica do VE. O exercício aeróbico tardio pode melhorar a capacidade funcional e a remodelação cardíaca por meio da preservação da geometria ventricular esquerda. A expressão gênica das subunidades da NADPH oxidase não está envolvida na remodelação cardíaca, nem é modulada pelo exercício aeróbico em ratos com infarto do miocárdio pequeno.

Abstract Background: Physical exercise has been considered an important non-pharmacological therapy for the prevention and treatment of cardiovascular diseases. However, its effects on minor cardiac remodeling are not clear. Objective: To evaluate the influence of aerobic exercise on the functional capacity, cardiac structure, left ventricular (LV) function, and gene expression of NADPH oxidase subunits in rats with small-sized myocardial infarction (MI). Methods: Three months after MI induction, Wistar rats were divided into three groups: Sham; sedentary MI (MI-SED); and aerobic exercised MI (MI-AE). The rats exercised on a treadmill three times a week for 12 weeks. An echocardiogram was performed before and after training. The infarction size was evaluated by histology, and gene expression was assessed by RT-PCR. The significance level for statistical analysis was set at 5%. Results: Rats with MI lower than 30% of the LV total area were included in the study. Functional capacity was higher in MI-AE than in Sham and MI-SED rats. The infarction size did not differ between groups. Infarcted rats had increased LV diastolic and systolic diameter, left atrial diameter, and LV mass, with systolic dysfunction. Relative wall thickness was lower in MI-SED than in the MI-AE and Sham groups. Gene expression of the NADPH oxidase subunits NOX2, NOX4, p22phox, and p47phox did not differ between groups. Conclusion: Small-sized MI changes cardiac structure and LV systolic function. Late aerobic exercise is able to improve functional capacity and cardiac remodeling by preserving the left ventricular geometry. NADPH oxidase subunits gene expression is not involved in cardiac remodeling or modulated by aerobic exercise in rats with small-sized MI.

https://doi.org/10.36660/abc.20190813 362 downloads

14.

Intraoperative clonidine to prevent postoperative emergence delirium following sevoflurane anesthesia in pediatric patients: a randomized clinical trial
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Sousa-Júnior, Fernando A.

; Souza, Alex S.R.

; Lima, Luciana C.

; Santos, Ítalo G.M.

; Menezes, Leonardo A.P.

; Ratis, Pedro A.P.L.

; Couceiro, Tania C.M.

Brazilian Journal of Anesthesiology

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Fev 2021, Volume 71 Nº 1 Páginas 5 - 10

Resumo: En | Texto: En | PDF: En

Abstract Introduction and objective Emergence Delirium (ED), particularly in children, is characterized by mental confusion, irritability, disorientation, and inconsolable crying. ED prolongs the time required in the Post-Anesthesia Care Unit (PACU) and increases concern and anxiety in parents. The present study aimed to determine the effectiveness and safety of low-dose clonidine in preventing ED in children receiving sevoflurane anesthesia for tonsillectomy/adenotonsillectomy. Methods A randomized, double-blind clinical trial was conducted between November 2013 and January 2014. Sixty-two children aged 2-12 years, scheduled to undergo tonsillectomy/adenotonsillectomy, and classified as American Society of Anesthesiologists (ASA) physical status I/II were included, with 29 being randomized to receive 1 µg.kg-1 clonidine intravenously, and 33 allocated to a control group that received no clonidine. Anesthesia was induced and maintained with sevoflurane. Children with altered state of consciousness, neurological deficit, history of allergy to dipyrone, or receiving other drugs such as preanesthetic agents were excluded from the study. The primary outcome was the presence of ED in the initial 20 minutes in the PACU according to the Pediatric Anesthesia Emergence Delirium (PAED) scale. The Chi-Square test and Fisher’s two-tailed exact test were used for statistical analysis, as applicable. Significance level was set at 5%, and Risk Ratios (RR) and their 95% Confidence Intervals (95% CI) were calculated. Results The frequency of ED was significantly decreased in the group of children who received clonidine (17.2% vs. 57.6%; RR = 0.30; 95% CI 0.13-0.70; p= 0.001). There was no difference between groups with respect to the frequency of postoperative self-harm (falls and bruises), dislodged catheters, and for most of the other adverse events evaluated. Conclusions The use of 1 µg.kg-1 intravenous clonidine during anesthesia induction can effectively reduce the incidence of ED in children undergoing elective tonsillectomy/adenotonsillectomy under general inhalation anesthesia with sevoflurane. ClinicalTrials.gov Identifier NCT02181543.

https://doi.org/10.1016/j.bjane.2020.12.003 100 downloads

15.

Challenges for the Future of Education brought by the Pandemic: The Coppead Case
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Campos, Roberta Dias

; Tavares, Elaine

; Chimenti, Paula C. P. de Souza

; Marques, Leonardo

Revista de Administração Contemporânea

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2021, Volume 25 Nº spe elocation e210062

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RESUMO Este caso de ensino descreve o processo de adaptação para a virtualização do ensino no Coppead, uma das principais escolas de pós-graduação em administração no Brasil. A mudança ocorre impulsionada pelo isolamento social adotado no país por conta da pandemia de COVID-19. O caso relata as decisões que o colegiado de professores, liderado pela diretora Elaine Tavares, precisou tomar para contornar a quarentena e garantir a continuidade das aulas no Mestrado, Doutorado e MBA Executivo. Os desafios dessa transição são discutidos, porém mais importante que isso são as oportunidades estratégicas que essa experiência abre para a inovação da escola nos anos futuros.

ABSTRACT This teaching case describes the process experienced by Coppead, one of the main graduate schools in business in Brazil, to adapt to e-learning. The change is driven by the social isolation adopted in the country due to the COVID-19 pandemic. The case reports on the decisions that the faculty collegiate, led by the director Elaine Tavares, has needed to take to circumvent the quarantine and ensure teaching continuity at Master, Doctoral, and Executive MBA levels. The case discusses the main challenges during the transition, but most importantly highlights the strategic opportunities that this shift has offered for innovation in the coming years.

https://doi.org/10.1590/1982-7849rac2021210062.en 789 downloads

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