Pesquisa | SciELO

Abstract We report the first record of a melanistic individual of the critically endangered Pampa cat (Leopardus munoai), from July 8th, 2021, at 10:45 am (coordinates 30.096288° S; 54.941139° W) in the area of the Brazilian army, known as Campo de Instrução Barão de São Borja (CIBSB), popularly known as Saicã.

Resumo: Este trabalho reporta o primeiro registro de melanismo do criticamente ameaçado de extinção gato-pampeano (Leopardus munoai), realizado em 8 de julho de 2021, às 10:45 da manhã. O registro foi obtido nas coordenadas 30.096288° S; 54.941139° W na área do exército brasileiro Campo de Instrução Barão de São Borja (CIBSB), popularmente conhecida como Saicã.

https://doi.org/10.1590/1676-0611-bn-2022-1456

Message applications in the doctor-patient relationship as a stressor
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Veiga, Melissa Gonzalez

; Felizi, Rogério Tadeu

; Trevisan, Gislayne Darly

; Cubero, Daniel de Iracema Gomes

; Fernandes, César Eduardo

; Oliveira, Emerson de

Revista da Associação Médica Brasileira

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Set 2022, Volume 68 Nº 9 Páginas 1228 - 1233

Resumo: En | Texto: En | PDF: En

SUMMARY OBJECTIVE: The aim of this study was to assess the use of smartphones’ messaging apps as a stressor affecting the well-being of gynecologists who use this tool to communicate with patients. METHODS: A cross-sectional study was conducted with gynecologists who use message applications to communicate with patients. Participants answered the WhatsApp Stress Scale, Oldenburg Burnout Inventory, and the techno-stress questionnaire. The population sample consisted of gynecologists and obstetricians selected by convenience. RESULTS: Physicians who spent more time using WhatsApp to communicate with patients had higher levels of stress (p=0.010), Burnout (p<0.001), and techno-invasion score (p<0.05). CONCLUSIONS: A positive association was found between the high frequency of WhatsApp usage for communication with patients and doctor's Burnout and stress, negatively influencing professional's well-being.

https://doi.org/10.1590/1806-9282.20220253

Diretrizes Brasileiras para o tratamento farmacológico de pacientes hospitalizados com COVID-19: Diretriz conjunta da Associação Brasileira de Medicina de Emergência, Associação de Medicina Intensiva Brasileira, Associação Médica Brasileira, Sociedade Brasileira de Angiologia e Cirurgia Vascular, Sociedade Brasileira de Infectologia, Sociedade Brasileira de Pneumologia e Tisiologia e Sociedade Brasileira de Reumatologia
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Falavigna, Maicon

; Stein, Cinara

; Amaral, José Luiz Gomes do

; Azevedo, Luciano Cesar Pontes de

; Belli, Karlyse Claudino

; Colpani, Verônica

; Cunha, Clóvis Arns da

; Dal-Pizzol, Felipe

; Dias, Maria Beatriz Souza

; Ferreira, Juliana Carvalho

; Freitas, Ana Paula da Rocha

; Gräf, Débora Dalmas

; Guimarães, Hélio Penna

; Lobo, Suzana Margareth Ajeje

; Monteiro, José Tadeu

; Nunes, Michelle Silva

; Oliveira, Maura Salaroli de

; Prado, Clementina Corah Lucas

; Santos, Vania Cristina Canuto

; Silva, Rosemeri Maurici da

; Sobreira, Marcone Lima

; Veiga, Viviane Cordeiro

; Vidal, Ávila Teixeira

; Xavier, Ricardo Machado

; Zavascki, Alexandre Prehn

; Machado, Flávia Ribeiro

; Carvalho, Carlos Roberto Ribeiro de

Revista Brasileira de Terapia Intensiva

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2022, Volume 34 Nº 1 Páginas 1 - 12

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

RESUMO Objetivos: Há diversas terapias sendo utilizadas ou propostas para a COVID-19, muitas carecendo de apropriada avaliação de efetividade e segurança. O propósito deste documento é elaborar recomendações para subsidiar decisões sobre o tratamento farmacológico de pacientes hospitalizados com COVID-19 no Brasil. Métodos: Um grupo de 27 membros, formado por especialistas, representantes do Ministério da Saúde e metodologistas, integra essa diretriz. Foi utilizado o método de elaboração de diretrizes rápidas, tomando por base a adoção e/ou a adaptação de recomendações a partir de diretrizes internacionais existentes (GRADE ADOLOPMENT), apoiadas pela plataforma e-COVID-19 RecMap. A qualidade das evidências e a elaboração das recomendações seguiram o método GRADE. Resultados: Foram geradas 16 recomendações. Entre elas, estão recomendações fortes para o uso de corticosteroides em pacientes em uso de oxigênio suplementar, para o uso de anticoagulantes em doses de profilaxia para tromboembolismo e para não uso de antibacterianos nos pacientes sem suspeita de infecção bacteriana. Não foi possível fazer uma recomendação quanto à utilização do tocilizumabe em pacientes hospitalizados com COVID-19 em uso de oxigênio, pelas incertezas na disponibilidade e de acesso ao medicamento. Foi feita recomendação para não usar azitromicina, casirivimabe + imdevimabe, cloroquina, colchicina, hidroxicloroquina, ivermectina, lopinavir/ ritonavir, plasma convalescente e rendesivir. Conclusão: Até o momento, poucas terapias se provaram efetivas no tratamento do paciente hospitalizado com COVID-19, sendo recomendados apenas corticosteroides e profilaxia para tromboembolismo. Diversos medicamentos foram considerados ineficazes, devendo ser descartados, de forma a oferecer o melhor tratamento pelos princípios da medicina baseada em evidências e promover economia de recursos não eficazes.

ABSTRACT Objective: Several therapies are being used or proposed for COVID-19, and many lack appropriate evaluations of their effectiveness and safety. The purpose of this document is to develop recommendations to support decisions regarding the pharmacological treatment of patients hospitalized with COVID-19 in Brazil. Methods: A group of 27 experts, including representatives of the Ministry of Health and methodologists, created this guideline. The method used for the rapid development of guidelines was based on the adoption and/or adaptation of existing international guidelines (GRADE ADOLOPMENT) and supported by the e-COVID-19 RecMap platform. The quality of the evidence and the preparation of the recommendations followed the GRADE method. Results: Sixteen recommendations were generated. They include strong recommendations for the use of corticosteroids in patients using supplemental oxygen, the use of anticoagulants at prophylactic doses to prevent thromboembolism and the nonuse of antibiotics in patients without suspected bacterial infection. It was not possible to make a recommendation regarding the use of tocilizumab in patients hospitalized with COVID-19 using oxygen due to uncertainties regarding the availability of and access to the drug. Strong recommendations against the use of hydroxychloroquine, convalescent plasma, colchicine, lopinavir + ritonavir and antibiotics in patients without suspected bacterial infection and also conditional recommendations against the use of casirivimab + imdevimab, ivermectin and rendesivir were made. Conclusion: To date, few therapies have proven effective in the treatment of hospitalized patients with COVID-19, and only corticosteroids and prophylaxis for thromboembolism are recommended. Several drugs were considered ineffective and should not be used to provide the best treatment according to the principles of evidence-based medicine and promote economical resource use.

https://doi.org/10.5935/0103-507x.20220001-pt

Translation and validation of the techno-stress questionnaire in Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Veiga, Melissa Gonzalez

; Felizi, Rogério Tadeu

; Trevisan, Gislayne Darly

; Cubero, Daniel de Iracema Gomes

; Fernandes, César Eduardo

; Oliveira, Emerson de

Revista da Associação Médica Brasileira

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 68 Nº 12 Páginas 1709 - 1714

Resumo: En | Texto: En | PDF: En

SUMMARY OBJECTIVE: The aim of this study was to translate the techno-stress questionnaire proposed by Ragu Nathan et al into Brazilian Portuguese and to culturally adapt and validate it. For this, 4 of the 11 original questionnaires’ domains were used. METHODS: The questionnaires’ domains translated and adapted were as follows: techno-overload, techno-invasion, techno-complexity, and job satisfaction. Initially, the techno-stress questionnaire was translated into Brazilian Portuguese language according to international standards, followed by cultural adaptations. Validation for feasibility and psychometric properties of translated questionnaire was performed on 138 gynecologists and obstetricians who use message applications to communicate with patients. The physicians were divided into groups according to the weekly messaging application usage time for communication with patients: <2 h (GI, n=89), 2–5 h (GII, n=29), and >5 h (GIII, n=23). The questionnaire was applied to all participants twice on the same day, overseen by two different interviewers, at a 15-min interval. After 15 days, it was readministered. The discriminant validity and reliability were calculated to validate the instrument. RESULTS: Techno-stress subscales showed statistically significant differences between the groups. The Cronbach’s alpha coefficient for the techno-stress questionnaire was >0.80, showing good internal consistency. No differences were observed in the test-retest comparison of the techno-stress questionnaire, and the intraclass correlation coefficient results showed excellent reproducibility (³0.75). CONCLUSION: The techno-stress questionnaire was adequately translated into Brazilian Portuguese, with good discriminant validity, good internal consistency, and adequate test-retest results.

https://doi.org/10.1590/1806-9282.20220793

Hepatocellular carcinoma (HCC) in patients with Non-Alcoholic Fatty Liver Disease (NAFLD): screening, treatment and survival analysis in a Brazilian series
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Alencar, Regiane Saraiva de Souza Melo

; Oliveira, Claudia P.

; Chagas, Aline Lopes

; Fonseca, Leonardo Gomes da

; Maccali, Claudia

; Saud, Lisa Rodrigues da Cunha

; Xerfan, Mariana Pinheiro

; Stefano, Jose Tadeu

; Herman, Paulo

; D'Albuquerque, Luiz Augusto Carneiro

; Alves, Venâncio Avancini Ferreira

; Carrilho, Flair Jose

Clinics

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 77 elocation 100097

Resumo: En | Texto: En | PDF: En

Abstract Objective: The aim of the present study was to evaluate the clinical features, Hepatocellular Carcinoma (HCC) screening, treatment modalities, and Overall Survival (OS) in a series of Non-Alcoholic Fatty Liver Disease-Related Hepatocellular Carcinoma (NAFLD-HCC) Brazilian patients. Methods: This was a cross-sectional study at the Instituto do Cancer do Estado de São Paulo, at the Faculdade de Medicina da Universidade de São Paulo with the approval of the local research ethics committee. NAFLD patients with HCC diagnosed, from May 2010 to May 2019, were included. Results: A total of 131 patients were included. Risk factors for NAFLD were present in 94.7% of the patients. Only 29% of patients were in the HCC screening program before diagnosis. HCC treatment was performed in 84.7% of patients. Cumulative survival at the end of the first year was 72%, second-year 52%, and fifth-year 32%. HCC screening before diagnosis was not significantly associated with higher cumulative survival. The independent factors associated with shorter general survival were BCLC C-D, p < 0.001, and the size of the largest nodule > 42 mm, p = 0.039. Conclusions: Although the efficacy of screening in our population regarding overall survival was hampered due to the sample size (29% had screening), BCLC stages C‒D and the size of the largest nodule larger than 42 mm were identified as independent factors of worse prognosis.

https://doi.org/10.1016/j.clinsp.2022.100097

Tree legumes with fertilizer potential: a multivariate approach
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Oliveira, Francisco Ronaldo Alves de

; Dias, Carlos Tadeu dos Santos

; Souza, Henrique Antunes de

; Lima, Breno Leonan de Carvalho

; Costa, Mirian Cristina Gomes

Revista Ciência Agronômica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2021, Volume 52 Nº 1 elocation e20196831

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

RESUMO Objetivou-se avaliar, por meio de análise multivariada de dados, quais resíduos de leguminosas arbóreas tem melhor potencial fertilizante para culturas agrícolas no semiárido nordestino brasileiro. O experimento foi conduzido em vasos, em delineamento aleatorizado em blocos, com sete tratamentos e quatro repetições. Para constituir os tratamentos utilizaram-se resíduos de sabiá, jurema-preta e gliricídia; além de duas partes da planta: folhas e folhas mais galhos. Os vasos foram preenchidos com 8,0 dm3 de solo e os resíduos foram adicionados na forma de massa verde, correspondendo a 73,0 g de massa seca por vaso. Sementes de milho foram semeadas e aos 65 dias após adição dos resíduos avaliou-se atributos químicos do solo, crescimento e teores de nutrientes das plantas. Os dados foram estudados por meio das análises de componentes principais, agrupamento, função discriminante canônica e teste de comparação de médias a partir da varável canônica 1. Resíduos de gliricídia influenciaram positivamente K e Mg do solo, bem como altura, diâmetro do caule, número de folhas e teores foliares de P, N e Mg em plantas de milho. Estes resíduos apresentaram maior dissimilaridade e separação em relação ao tratamento controle e proporcionaram médias estatisticamente superiores aos demais tratamentos. Folhas de jurema-preta influenciaram positivamente Ca, N e COT do solo, bem como teores foliares de K e Ca e matéria seca total do milho. A análise estatística multivariada permitiu identificar potenciais distintos entre resíduos de leguminosas para uso como fertilizante na cultura do milho, sendo a espécie gliricídia a que apresenta maior potencial.

ABSTRACT The objective of this study was to evaluate, through multivariate data analysis, which tree legume residues have the best fertilizer potential for agricultural crops in the semi-arid region of northeastern Brazil. The experiment was conducted in pots, in a randomized block design, with seven treatments and four replicates. Treatments consisted of residues of Sabiá, Jurema Preta and Gliricidia, besides two parts of the plant: leaves and leaves + branches. The pots were filled with 8.0 dm3 of soil and the residues were added in the form of green mass, corresponding to 73.0 g of dry mass per pot. Maize seeds were sown and, at 65 days after addition of the residues, soil chemical attributes, growth and nutrient contents in the plants were evaluated. The data were studied through principal component analysis, clustering analysis, canonical discriminant function analysis and means comparison test from canonical variable 1. Gliricidia residues positively influenced soil K and Mg contents, as well as height, stem diameter, number of leaves and leaf contents of P, N and Mg in maize plants. These residues showed greater dissimilarity and separation compared to the control treatment and led to statistically higher means compared to the other treatments. Jurema Preta leaves positively influenced soil Ca, N and TOC, as well as leaf contents of K and Ca and total dry mass of maize. Multivariate statistical analysis made it possible to identify distinct potentials among legume residues for use as fertilizer in maize crop, and Gliricidia is the species with highest potential.

https://doi.org/10.5935/1806-6690.20210002 81 downloads

Non-volant mammalian species richness in the ecotonal Brazilian midnorth: checklist for Maranhão State
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Vieira, Odgley Quixaba

; Oliveira, Tadeu Gomes de

Biota Neotropica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 20 Nº 2 elocation e20190912

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

Resumo: A denominação de estado ecótono, por estar localizado na região meio-norte do Brasil, entre a Amazônia a Caatinga e o Cerrado, confere ao Maranhão não só áreas ricas e abundantes de espécies, mas também à necessidade de cuidados especiais na sua conservação, por se tratarem de ambientes de dinâmicos e, portanto, pouco estáveis. Apesar de seu enorme potencial para abrigar altos níveis de riqueza e abundância de espécies da flora e fauna, o Maranhão ainda possui uma riqueza biológica pouco conhecida, notadamente quanto à sua mastofauna. A metodologia empregada para inventariar a comunidade de pequenos mamíferos não-voadores foi a de captura-recaptura, utilizando armadilhas do tipo live-traps. Para os mamíferos de médio e grande porte utilizou-se a visualização direta e indireta através da transecção de trilhas pré-estabelecidas assim como entrevistas e uso de armadilhas fotográficas. Para maximizar a busca das espécies já registradas para o estado foram também realizadas buscas de literatura através de plataformas digitais confiáveis. Foram registradas 89 espécies de mamíferos não-voadores no território maranhense, distribuídos em 9 ordens e 27 famílias. Dos táxons listados 25.84% constam na lista brasileira dos animais ameaçados de extinção, enquanto que 20 são endêmicos do território brasileiro. O estado de conservação de algumas áreas aliado à forte presença de ambientes agro-pastoris contribuíram para ocorrências não usuais, enquanto que a natureza ecotonal foi notada pela proximidade do número de espécies associadas aos biomas Amazônia (N=65) e Cerrado (N=66). Em tempos de desenvolvimento aliada a inúmeros impactos antrópicos sobre o meio ambiente é salutar que se quantifique, mesmo que em escalas específicas, a riqueza ambiental do estado. Diversidade expressiva, endemismo, espécies raras e ameaçadas destacam o Maranhão como um dos principais estados do meio norte do Brasil, entretanto são muitas as lacunas de conhecimento, o que torna imperativo não somente novos trabalhos de inventários mas também maiores esforços na precisão taxonômica das espécies, notadamente na de pequenos mamíferos.

Abstract: The state of Maranhão, located in the westernmost portion of the Northeast Region of Brazil, is characterized by a dynamic and unstable ecotone among the Amazon, Caatinga and Cerrado biomes that presents a high degree of biodiversity with high vulnerability to anthropogenic activities. Despite the enormous potential for sheltering high levels of species diversity and abundance, little is known about many aspects the state’s biodiversity, especially with regard to mammalian fauna. A capture-recapture methodology using live-traps was employed to inventory the non-volant, small mammal community. In addition, we recorded medium and large mammals based on direct and indirect observations, camera-trap surveys, and interviews. An extensive literature search of published research was also performed to maximize the elaboration of a complete mammal species checklist for Maranhão. A total of 89 non-volant mammal species, representing 9 orders and 27 families were recorded in the state of Maranhão. Of these taxa, 25.84% are included in the Brazilian Red List for endangered species, while 20 are considered as being endemic to Brazil. The preservation status of some areas, coupled with the strong presence of agro-pastoral environments, contributed to some unusual species occurrences, while the state’s ecotonal nature was noted by the numbers of species associated with the Amazon (N=65) and Cerrado (N=66) biomes.. Given the rapid development and effects of numerous anthropogenic impacts occurring in the state, it is a crucial time to quantify, even at specific scales, the environmental richness of Maranhão. The significant levels of biodiversity, high degree of endemism, and the presence of numerous rare and endangered species characterizes Maranhão as being among the most biologically important parts of Brazil. Nonetheless, many gaps in our basic knowledge regarding the biodiversity of this area remain, such that the execution of additional biological inventories is imperative, as are greater efforts to clarify certain species limits and necessary taxonomic revisions, most notably that for small mammals.

https://doi.org/10.1590/1676-0611-bn-2019-0912 1338 downloads

18F-FDG PET/CT AS AN ASSESSMENT TOOL OF HEPATOCELLULAR CARCINOMA SECONDARY TO NON-ALCOHOLIC FATTY LIVER DISEASE DEVELOPMENT IN EXPERIMENTAL MODEL
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

LEVY, Caio de Souza

; COSTA, Fernando Gomes de Barros

; FARIA, Daniele de Paula

; STEFANO, Jose Tadeu

; COGLIATI, Bruno

; OLIVEIRA, Claudia P

Arquivos de Gastroenterologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2019, Volume 56 Nº 1 Páginas 45 - 50

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

RESUMO BACKGROUND: O carcinoma hepatocelular (CHC) pode ser a última fase da doença hepática gordurosa não alcoólica (DHGNA). Modelos experimentais são cruciais para elucidação da patogênese do CHC secundário a DHGNA. A tomografia por emissão de pósitrons/tomografia computadorizada (PET/TC) com 2-desoxi-2-(18F)fluoro-D-glicose (18F-FDG) desempenha um importante papel na avaliação do desenvolvimento e progressão do CHC. OBJETIVO: Padronizar a metodologia de imagem por PET/TC com 18F-FDG como uma ferramenta de avaliação do modelo experimental de CHC secundário a DHGNA. MÉTODOS: Dez ratos Sprague-Dawley machos foram alimentados com dieta hiperlipídica deficiente em colina associada a dietilnitrosamina (DEN) na água de beber por 16 semanas e depois receberam 1 mL de solução salina (0,9%) por gavagem diariamente por três semanas. Nas 16ª e 19ª semanas, foi realizada a ultrassonografia abdominal. As imagens do PET/TC com 18F-FDG foram obtidas antes do início do experimento (semana 0) e no final (semana 19). Análises histológica e imunohistoquímica também foram realizadas. RESULTADOS: Os resultados da ultrassonografia demonstraram um grupo homogêneo na 16ª semana com uma média de 4,6±2,74 nódulos por animal. Na 19ª semana, os achados do PET/CT demonstraram uma média de 8,5±3,7 nódulos por animal. Os valores médios de SUVmed e SUVmáx foram 2,186±0,1698 e 3,8±1,74, respectivamente. A média do número de nódulos na análise histológica foi de 5,5±1,5. De todos os nódulos, 4,6% foram classificados como bem diferenciados e 81,8% foram classificados como CHC pouco diferenciado. CONCLUSÃO: O PET/TC com 18F-FDG foi capaz de avaliar o desenvolvimento do CHC secundário a DHGNA de forma não invasiva. A partir da padronização do PET/CT neste modelo, faz-se possível a utilização desta ferramenta em futuros estudos para monitorar, in vivo e de forma não invasiva, a progressão do CHC.

ABSTRACT BACKGROUND: Hepatocellular carcinoma (HCC) can be the last step of non-alcoholic fatty liver disease (NAFLD) evolution. Experimental models are crucial to elucidate the pathogenesis of HCC secondary to NAFLD. The 2-deoxy-2-(18F)fluoro-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) plays an important role in evaluating HCC development and progression. OBJECTIVE: To standardize the imaging method of PET/CT with 18F-FDG as an evaluation tool of the experimental model of HCC secondary to NAFLD. METHODS: Ten male Sprague-Dawley rats were fed with choline-deficient high-fat diet and diethylnitrosamine (DEN) in the drinking water for 16 weeks and then received 1 mL of saline solution (0.9%) daily by gavage for three weeks. At the 16th and 19th weeks, abdominal ultrasonography (USG) was performed. 18F-FDG PET/CT images were obtained before the beginning of experiment (week 0) and at the end (week 19). Histological and immunohistochemically analysis were also performed. RESULTS: The USG results showed a homogeneous group at the 16th week with an average of 4.6±2.74 nodules per animal. At the 19th week, PET/CT findings demonstrated an average of 8.5±3.7 nodules per animal. The mean values of SUVmed and SUVmax were 2.186±0.1698 and 3.8±1.74, respectively. The average number of nodules per animal in the histological analysis was 5.5±1.5. From all nodules, 4.6% were classified as well-differentiated HCC and 81.8% were classified as poorly-differentiated HCC. CONCLUSION: 18F-FDG PET/CT was able to evaluate the development of HCC in an experimental model of NAFLD non-invasively. From the standardization of PET/CT in this model, it is possible to use this tool in future studies to monitor, in vivo and non-invasively, the progression of HCC.

https://doi.org/10.1590/s0004-2803.201900000-02 1385 downloads

Phylogeographic analyses of the pampas cat (Leopardus colocola; Carnivora, Felidae) reveal a complex demographic history
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

da Silva Santos, Anelisie

; Trigo, Tatiane Campos

; de Oliveira, Tadeu Gomes

; Silveira, Leandro

; Eizirik, Eduardo

Genetics and Molecular Biology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2018, Volume 41 Nº 1 Páginas 273 - 287

Resumo: En | Texto: En | PDF: En

Abstract The pampas cat is a small felid that occurs in open habitats throughout much of South America. Previous studies have revealed intriguing patterns of morphological differentiation and genetic structure among its populations, as well as molecular evidence for hybridization with the closely related L. tigrinus. Here we report phylogeographic analyses encompassing most of its distribution (focusing particularly on Brazilian specimens, which had been poorly sampled in previous studies), using a novel dataset comprising 2,143 bp of the mitogenome, along with previously reported mtDNA sequences. Our data revealed strong population strutucture and supported a west-to-east colonization process in this species’ history. We detected two population expansion events, one older (ca. 200 thousand years ago [kya]) in western South America and another more recent (ca. 60-50 kya) in eastern areas, coinciding with the expansion of savanna environments in Brazil. Analyses including L. tigrinus individuals bearing introgressed mtDNA from L. colocola showed a complete lack of shared haplotypes between species, indicating that their hybridization was ancient. Finally, we observed a close relationship between Brazilian/Uruguayan L. colocola haplotypes and those sampled in L. tigrinus, indicating that their hybridization was likely related to the demographic expansion of L. colocola into eastern South America.

https://doi.org/10.1590/1678-4685-gmb-2017-0079 3240 downloads

10.

Associated laparoscopic-assisted gastropexy and ovariohisterectomy in a Great Dane bitch
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Pinto Filho, Saulo Tadeu Lemos

; Dalmolin, Fabíola

; Oliveira, Marília Teresa de

; Souza, Fernando Wiecheteck de

; Sprada, Arícia Gomes

; Rosa, Matheus Pippi da

; Feranti, João Pedro Scussel

; Brun, Mauricio Veloso

Ciência Rural

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Fev 2015, Volume 45 Nº 2 Páginas 280 - 283

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

As técnicas de gastropexia são realizadas objetivando aderir o estômago permanentemente ao abdômen, sendo comumente indicadas na prevenção e tratamento da dilatação vólvulo-gástrico (DVG). O único método aceito para a prevenção da GDV é a gastropexia profilática, a qual pode ser realizada pelo acesso videoassistido de forma rápida e fácil. Objetiva-se relatar a associação de gastropexia profilática videoassistida e ovariohisterectomia (OVH) eletiva em uma cadela Dogue alemão, com dois anos de idade, pela técnica de dois portais, na qual se observou rápida e completa recuperação da paciente. Conclui-se que a gastropexiavideoassistida profilática associada à OVH videoassistida com dois portais, durante única intervenção, é factível e segura para cães, tornando-se uma opção adequada na prevenção da DVG em raças predispostas

Gastropexy techniques are performed aiming to adhere permanently the stomach to the abdomen, being this one of the most common indications for prevention and treatment of gastric dilatation-volvulus (GDV). The only accepted method for the prevention of GDV is the prophylactic gastropexy, and the laparoscopic-assisted procedure is quick and easy to perform. It is aimed to report the association of laparoscopic-assisted prophylactic gastropexyand elective ovariohysterectomy (OVH) in a two years old Great dane bitch using the two-portals access, when it was observed rapid and complete recovery. It is concluded that the two portals laparoscopic-assisted prophylactic gastropexy is feasible and safe in dogs, when combined with elective OVH. It makes the technique a suitable option for prevention of GDV in predisposed breeds

https://doi.org/10.1590/0103-8478cr20140049 3840 downloads

11.

Evaluation of the mutagenicity and antimutagenicity of Ziziphus joazeiro Mart. bark in the micronucleus assay
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Boriollo, Marcelo Fabiano Gomes

; Resende, Marielly Reis

; Silva, Thaísla Andrielle da

; Públio, Juliana Yoshida

; Souza, Luiz Silva

; Dias, Carlos Tadeu dos Santos

; Oliveira, Nelma de Mello Silva

; Fiorini, João Evangelista

Genetics and Molecular Biology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jun 2014, Volume 37 Nº 2 Páginas 428 - 438

Resumo: En | Texto: En | PDF: En

The aim of this study was to evaluate the mutagenicity (clastogenicity/aneugenicity) of a glycolic extract of Ziziphus joazeiro bark (GEZJ) by the micronucleus assay in mice bone marrow. Antimutagenic activity was also assessed using treatments associated with GEZJ and doxorubicin (DXR). Mice were evaluated 24-48 h after exposure to positive (N-nitroso-N-ethylurea, NEU - 50 mg.kg-1 and DXR - 5 mg.kg-1) and negative (150 mM NaCl) controls, as well as treatment with GEZJ (0.5-2 g.kg-1), GEZJ (2 g.kg-1) + NEU and GEZJ (2 g.kg-1) + DXR. There were no significant differences in the frequencies of micronucleated polychromatic erythrocytes in mice treated with GEJZ and GEJZ + DXR compared to the negative controls, indicating that GEZJ was not mutagenic. Analysis of the polychromatic:normochromatic erythrocyte ratio revealed significant differences in the responses to doses of 0.5 g.kg-1 and 1-2 g.kg-1 and the positive control (NEU). These results indicated no systemic toxicity and moderate toxicity at lower and higher doses of GEZJ. The lack of mutagenicity and systemic toxicity in the antimutagenic assays, especially for treatment with GEZJ + DXR, suggested that phytochemical compounds in Z. joazeiro bark attenuated DXR-induced mutagenicity and the moderate systemic toxicity of a high dose of Z. joazeiro bark (2 g.kg-1). Further studies on the genotoxicity of Z. joazeiro extracts are necessary to establish the possible health risk in humans and to determine the potential as a chemopreventive agent for therapeutic use.

2227 downloads

12.

Evaluation of Nile tilapia strains cultivated in cages under different feeding programmes
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Freato, Thiago Archangelo

; Freitas, Rilke Tadeu Fonseca de

; Pimenta, Maria Emília de Sousa Gomes

; Oliveira, Giovanni Resende de

; Reis Neto, Rafael Vilhena

; Mattos, Bruno Olivetti de

Revista Brasileira de Zootecnia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jun 2012, Volume 41 Nº 6 Páginas 1332 - 1336

Resumo: En | Texto: En | PDF: En

The objective of this study was to evaluate the performance of three Nile tilapia Oreochromis niloticus strains cultivated in cages and subjected to different feeding programmes. Initially, 31,200 Nile tilapia juveniles with an average weight of 61.15 g were distributed in 48 cages. Two genetically improved strains were used together with one from the Fish Culture Section of Universidade Federal de Lavras (UFLA). The fish were subjected to four feeding programmes, consisting of different levels of crude protein (CP) in diets provided at different stages of cultivation. There was no interaction effect of the strain and feeding programme for most variables. The UFLA strain presented the highest weight gain, but with greatest lack of uniformity at the end of cultivation. The feeding programme with diets containing 36%, 32% and 28% CP, consecutively, promoted the highest weight gain and highest final biomass. The UFLA strain has great growth potential, justifying the development of a breeding programme for this strain. Crude protein levels below 36% for tilapias between 60 and 170 g and below 32% for tilapias between 170 and 700 g worsen fish performance.

2202 downloads Citado 1 vez em SciELO

13.

Serological evidence of hantavirus infection in rural and urban regions in the state of Amazonas, Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Gimaque, João Bosco Lima

; Bastos, Michele de Souza

; Braga, Wornei Silva Miranda

; Oliveira, Cintia Mara Costa de

; Castilho, Márcia da Costa

; Figueiredo, Regina Maria Pinto de

; Galusso, Elizabeth dos Santos

; Itapirema, Evaulino Ferreira

; Figueiredo, Luiz Tadeu Moraes de

; Mourão, Maria Paula Gomes

Memórias do Instituto Oswaldo Cruz

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Fev 2012, Volume 107 Nº 1 Páginas 135 - 137

Resumo: En | Texto: En | PDF: En

Hantavirus disease is caused by the hantavirus, which is an RNA virus belonging to the family Bunyaviridae. Hantavirus disease is an anthropozoonotic infection transmitted through the inhalation of aerosols from the excreta of hantavirus-infected rodents. In the county of Itacoatiara in the state of Amazonas (AM), Brazil, the first human cases of hantavirus pulmonary and cardiovascular syndrome were described in July 2004. These first cases were followed by two fatal cases, one in the municipality of Maués in 2005 and another in Itacoatiara in 2007. In this study, we investigated the antibody levels to hantavirus in a population of 1,731 individuals from four different counties of AM. Sera were tested by IgG/IgM- enzyme-linked immune-sorbent assay using a recombinant nucleocapsid protein of the Araraquara hantavirus as an antigen. Ten sera were IgG positive to hantavirus (0.6%). Among the positive sera, 0.8% (1/122), 0.4% (1/256), 0.2% (1/556) and 0.9% (7/797) were from Atalaia do Norte, Careiro Castanho, Itacoatiara and Lábrea, respectively. None of the sera in this survey were IgM-positive. Because these counties are distributed in different areas of AM, we can assume that infected individuals are found throughout the entire state, which suggests that hantavirus disease could be a local emerging health problem.

3012 downloads

14.

Degradation kinetics and assessment of the prediction equation of indigestible fraction of neutral detergent fiber from agroindustrial byproducts
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Filho, José Gilson Louzada Regadas

; Pereira, Elzânia Sales

; Pimentel, Patrícia Guimarães

; Oliveira, Tadeu Silva de

; Costa, Marcus Roberto Góes Ferreira

; Maia, Iana Sérvulo Gomes

Revista Brasileira de Zootecnia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Set 2011, Volume 40 Nº 9 Páginas 1997 - 2004

Resumo: En | Texto: En | PDF: En

This study aimed at estimating the kinetic parameters of ruminal degradation of neutral detergent fiber from agroindustrial byproducts of cashew (pulp and cashew nut), passion fruit, melon, pineapple, West Indian cherry, grape, annatto and coconut through the gravimetric technique of nylon bag, and to evaluate the prediction equation of indigestible fraction of neutral detergent fiber suggested by the Cornell Net Carbohydrate and Protein System. Samples of feed crushed to 2 mm were placed in 7 × 14 cm nylon bags with porosity of 50 µm in a ratio of 20 g DM/cm² and incubated in duplicate in the rumen of a heifer at 0, 3, 6, 9, 12, 16, 24, 36, 48, 72, 96 and 144 hours. The incubation residues were analyzed for NDF content and evaluated by a non-linear logistic model. The evaluation process of predicting the indigestible fraction of NDF was carried out through adjustment of linear regression models between predicted and observed values. There was a wide variation in the degradation parameters of NDF among byproducts. The degradation rate of NDF ranged from 0.0267 h-1 to 0.0971 h-1 for grape and West Indian cherry, respectively. The potentially digestible fraction of NDF ranged from 4.17 to 90.67%, respectively, for melon and coconut byproducts. The CNCPS equation was sensitive to predict the indigestible fraction of neutral detergent fiber of the byproducts. However, due to the high value of the mean squared error of prediction, such estimates are very variable; hence the most suitable would be estimation by biological methods.

2306 downloads

15.

Níveis de farinha de peixe em rações para juvenis de tilápia
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Pontes, Edvânia da Conceição

; Oliveira, Marinez Moraes de

; Rosa, Priscila Vieira e

; Freitas, Rilke Tadeu Fonseca de

; Pimenta, Maria Emília de Sousa Gomes

; Rodrigues, Paulo Borges

Revista Brasileira de Zootecnia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Ago 2010, Volume 39 Nº 8 Páginas 1626 - 2632

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

Avaliou-se a influência do uso na ração de farinha de peixe suplementada com aminoácidos sobre o desempenho, as características de carcaça e a análise hematológica de juvenis de tilápia-do-nilo. Utilizaram-se 140 juvenis com peso médio de 14,0 ± 0,14 g, distribuídos aleatoriamente em delineamento inteiramente casualizado, com cinco níveis de farinha de peixe (0; 1,5; 3,0; 4,5 e 6,0%) na ração, cada um com quatro repetições. As rações foram isoenergéticas (3.000 kcal de energia digestível) e isocálcicas, e os peixes foram alimentados três vezes ao dia, até saciedade aparente, durante 60 dias. Foram avaliados o ganho de peso, o consumo de ração, a conversão alimentar aparente, a taxa de eficiência protéica, o índice hepatossomático, o peso da carcaça, o rendimento de carcaça, a retenção de nitrogênio e as taxas de hematócrito e hemoglobina. Os níveis de farinha de peixe não influenciaram o ganho de peso, a conversão alimentar, o consumo de ração, o índice hepatossomático, o rendimento de carcaça, o peso da carcaça e a taxa de hemoglobina, mas tiveram efeito quadrático sobre a retenção de nitrogênio, o teor de umidade e de gordura na carcaça e a taxa de hematócrito. Quanto maiores os níveis de farinha de peixe, menor a taxa de eficiência proteica e mais altos os teores de proteína e cinzas na carcaça. O nível de 3% de farinha de peixe não afeta o desempenho nem as características de carcaça de juvenis de tilápia-do-nilo.

This study was conducted to evaluate, in the ration, the use of fish meal supplement with amino acids on performance, carcass characteristics, and on hematological analysis in Nile tilapia juvenils. It was used 140 juveniles with an average weight of 14.0 ± 0.14 g, randomly distributed in a complete random design with five levels of fish meal (0; 1.5; 3.0; 4.5; and 6.0%) in the ration, each one with four replicates. The rations were isoenergetic (3,000 kcal of digestible energy) and isocalcium and fish were fed three times a day until apparent satiety for 60 days. It was evaluated the weight gain, feed intake, apparent feed conversion, protein efficiency rate, hepatosomatic index, carcass weight, carcass yield, nitrogen retention, and hematocrit and hemoglobin rates. The levels of fish meal did not change the weight gain, food conversion, ration intake, hepatosomatic level, carcass yield, carcass weight and hemoglobin rate, but they had a quadratic effect on nitrogen retention, humidity, and fat content on the carcass, and on the hematocrit rate. The higher the levels of fish meal, the lowest the protein efficiency rate and the higher the protein and ash levels in the carcass. The 3% level of fish meal does not affect performance neither carcass characteristics of Nile tilapia juveniles.

5353 downloads Citado 1 vez em SciELO

Exibindo

itens por página

Página de 2 Próxima

Selecione um ou mais resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Download CSV

Visualizar estatísticas de

Enviar resultado

E-mail do(s) destinatários*

Utilize ; (ponto e vírgula) para mais de um e-mail.

Enviar por e-mail

Esta página

Registros selecionados

Todos os registros (max. 300)

Alterar remetente, assunto e comentários

Seu email

Assunto

Comentários

Alterar remetente, assunto e comentários

Exportar resultados

Formato de exportação:

RIS (para EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citação

CSV (para Excel, etc)

Exportar:

Esta página

Itens selecionados

Todos os registros (max. 2000)

Mostrar mais

Sem resultados

Não foram encontrados documentos para sua pesquisa

Glossário e ajuda para busca

Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

Todo o conteúdo de www.scielo.org, exceto onde está identificado, está licenciado sob uma Licença Creative Commons.
saiba mais »