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FUNCIONALIZAÇÃO DE LIGAÇÕES C—H EM ESTÁGIO TARDIO EM SÍNTESE ORGÂNICA CH C H
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Rocha, Eduardo C. S.

; Salmazo, Yasmin N.

; Hayashi, Marcio

; Zaragoza, César A. D.

; Lucca Júnior, Emilio C. de

Química Nova

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2023, Volume 46 N. 1 Pages 43 - 76

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

The development of new strategies for the functionalization of the historically inert C—H bond arises as an excellent way to create new carbon—carbon and carbon— heteroatom bonds. With increasingly chemo- and site-selective methods that enables the late-stage functionalization of C—H bonds, the modification of specific sites in natural products and pharmaceuticals without altering their scaffold emerges as a powerful means for the diversification of complex molecules. In this review, we will introduce concepts of late-stage modifications, the use of C—H bond functionalization to forge new carbon—carbon and carbon—heteroatom bonds using metal catalysis and photochemistry in simple examples and their applications in natural products and pharmaceuticals. The aim of the review is to update and display to the reader the contributions and implications of this methodology to organic synthesis. CH C H carboncarbon carbon chemo siteselective site selective latestage late stage molecules modifications carbonheteroatom synthesis

https://doi.org/10.21577/0100-4042.20170949

Insights into the evolutionary history of the most skilled tool-handling platyrrhini monkey: Sapajus libidinosus from the Serra da Capivara National Park toolhandling tool handling monkey
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Lima, Thaynara

; Fam, Bibiana

; Tavares, Gustavo Medina

; Falótico, Tiago

; Cantele, Camila

; Fanti, Lucca

; Landau, Luane

; Viscardi, Lucas Henriques

; Vargas-Pinilla, Pedro

; Barrientos-Diaz, Ossman

; Pissinatti, Alcides

; Sortica, Vinicius A.

; Ottoni, Eduardo B.

; Segatto, Ana Lúcia A.

; Turchetto-Zolet, Andreia Carina

; Bortolini, Maria Cátira

Genetics and Molecular Biology

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2023, Volume 46 N. 3 elocation e20230165

Abstract: En | Text: En | PDF: En

Abstract Sapajus libidinosus members of the Pedra Furada group, living in the Serra da Capivara National Park, use stone tools in a wider variety of behaviors than any other living animal, except humans. To rescue the evolutionary history of the Caatinga S. libidinosus and identify factors that may have contributed to the emergence and maintenance of their tool-use culture, we conducted fieldwork seasons to obtain biological samples of these capuchin monkeys. UsingCYTBsequences, we show a discrete but constant population growth from the beginning of the Holocene to the present, overlapping the emergence of the Caatinga biome. Our habitat suitability reconstruction reports the presence of plants whose hard fruits, seeds, or roots are processed by capuchins using tools. TheS. libidinosusindividuals in the Caatingawere capable of dynamically developing and maintaining their autochthonous culture thanks to: a) cognitive capacity to generate and execute innovation under selective pressure; b) tolerance favoring learning and cultural inheritance; c) an unknown genetic repertoire that underpins the adaptive traits; d) a high degree of terrestriality; e) presence and abundance of natural resources, which makes some places “hot spots” for innovation, and cultural diversification within a relatively short time. group Park animal humans S tooluse tool monkeys UsingCYTBsequences present biome fruits seeds TheS pressure b inheritance c traits d terrestriality e resources hot spots time

https://doi.org/10.1590/1678-4685-gmb-2023-0165

Floor impact noise performance of prefabricated prestressed joists and block slabs with wooden laminate floors
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Lourenço, Willian Magalhães de

; Meller, Gabriela

; Rossi, Camila Taciane

; Haas, Alessandra

; Santos, Eduardo Henrique Lucca

; Santos, Joaquim Cesar Pizzutti dos

; Melo, Viviane Suzey Gomes de

; Tenenbaum, Roberto Aizik

; Mohamad, Gihad

Ambiente Construído

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dec 2022, Volume 22 N. 4 Pages 335 - 353

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

Resumo Esta pesquisa tem como objetivo discutir e determinar valores de desempenho acústico para ruído de impacto (L' nTw ), para 39 composições de sistemas de pisos, com diferentes materiais resilientes e acabamento de pisos laminados de madeira, a metodologia organiza-se conforme a ISO 16283-2, ISO 717-2 e NBR 15575-3 para classificação. Os resultados obtidos demonstram que a laje pré-fabricada nervurada com vigotas protendidas e tavelas cerâmicas e o sistema de laje e contrapiso não atingem os requisitos mínimos de isolamento acústico, com valores de 91 e 84 dB respectivamente. Dentre as outras 37 amostras, vale ressaltar que pisos laminados de madeira com melhor resistência à abrasão são mais eficientes em relação ao desempenho acústico, com valores de isolamento de ruído de impacto variando de 60 a 62 dB, devido sua densidade superficial. Nas amostras que usam materiais resilientes, os valores de desempenho variam de 55 a 46 dB.

Abstract This research aims to discuss and determine acoustic performance values for impact noise insulation (L’nT,w) for 39 floor system compositions that have different resilient materials and wooden laminate floor finishing. The methodology is organized according to ISO 16283-2, ISO 717-2 and NBR 15575-3 for classification. The results obtained demonstrate that the prefabricated ribbed slab with prestressed joists and ceramic slabs, as well as the slab and subfloor system do not meet the minimum requirements for acoustic insulation, comprising values of 91 and 84 dB, respectively. Among the other 37 samples, it is worth mentioning that wooden laminate floors with better abrasion resistance is more efficient concerning acoustic performance, comprising impact noise insulation values ranging from 60 to 62 dB, due to its surface density. In the samples that use resilient materials, the performance values vary from 55 to 46 dB.

https://doi.org/10.1590/s1678-86212022000400643

FACTORS ASSOCIATED WITH CIRCULATING ZONULIN IN INFLAMMATORY BOWEL DISEASE
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LACOMBE, Luiz Augusto Cardoso

; MATIOLLO, Camila

; ROSA, Julia Salvan da

; FELISBERTO, Mariano

; DALMARCO, Eduardo Monguilhott

; SCHIAVON, Leonardo de Lucca

Arquivos de Gastroenterologia

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jun 2022, Volume 59 N. 2 Pages 238 - 243

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

RESUMO Contexto: A doença inflamatória intestinal (DII) compreende o espectro entre a doença de Crohn (DC) e a colite ulcerativa, condição esta cuja prevalência em países como o Brasil vem aumentando significativamente nos últimos anos. Alterações na função da barreira epitelial intestinal e, consequentemente, um aumento da permeabilidade intestinal, têm sido sugeridos como fatores importantes envolvidos na patogênese de diferentes condições autoimunes, dentre elas, a DII. Desta forma, existe a necessidade de uma ferramenta prática para avaliar a integridade da barreira epitelial intestinal nestes pacientes. Objetivo: Estudar os fatores associados com os níveis séricos de zonulina, um marcador da permeabilidade intestinal, em pacientes com DII. Métodos: Estudo observacional transversal que incluiu 117 pacientes com DII e 32 indivíduos que compuseram o grupo controle. A atividade da doença foi avaliada pelo Simple Cliniical Colitis Activity Index (SCCAI) na colite ulcerativa e pelo índice de Harvey-Bradshaw (IHB) em pacientes com DC. Os níveis de zonulina foram quantificados por ELISA e os níveis das citocinas inflamatórias pelo Cytometric Bead Array, utilizando kits comercialmente disponíveis. Resultados: A média de idade dos pacientes com DII foi de 44,0±15,9 anos, 66,7% eram do sexo feminino, 57 pacientes eram portadores de DC e 60 pacientes eram portadores de colite ulcerativa. No momento da avaliação clínico-laboratorial, 56,7% dos pacientes com DC encontravam-se em remissão clínica e, dentre os pacientes com colite ulcerativa, 59,2% deles assim se encontravam. Não foram observadas diferenças nos níveis séricos de zonulina entre pacientes com DII e grupo controle (95,28 ng/mL vs 96,61 ng/mL; P=0,573), assim como entre pacientes com DC e pacientes com colite ulcerativa (79,68 ng/mL vs 106,10 ng/mL, P=0,887). Dentre os pacientes com DII, as concentrações de zonulina foram mais elevadas no sexo feminino e correlacionaram-se positivamente com o índice de massa corporal (IMC) e com a idade, correlacionando-se negativamente com os níveis de hemoglobina e hematócrito. Nos pacientes com colite ulcerativa, as concentrações de zonulina correlacionaram-se negativamente com os parâmetros hemoglobina, hematócrito e albumina e, positivamente, com o IMC e com o SCCAI. Dentre os pacientes com DC, a zonulina sérica correlacionou-se positivamente com a idade e com o IMC, mas não com o IHB. Não foram observadas correlações entre os níveis de zonulina e as citocinas circulantes nos pacientes com DII. Conclusão: Nesta coorte constituída majoritariamente por pacientes em remissão clínica, os níveis séricos de zonulina não se mostraram aumentados em pacientes com DII em relação a indivíduos controles e correlacionaram-se com variáveis não relacionadas à doença de base, como com o sexo, com a idade e com o IMC. No entanto, os níveis séricos de zonulina correlacionaram-se com parâmetros clínicos e laboratoriais de gravidade e atividade da doença dentre os pacientes com colite ulcerativa, mas não dentre os pacientes com DC. Estes achados indicam um potencial papel da zonulina sérica como um biomarcador na DII, principalmente na colite ulcerativa.

ABSTRACT Background: Inflammatory bowel disease (IBD) comprises the spectrum between Crohn’s disease (CD) and ulcerative colitis (UC), a condition whose prevalence in countries such as Brazil has increased significantly in recent years. Changes in the intestinal epithelial barrier function and, consequently, an increase in intestinal permeability, have been suggested as important factors in the pathogenesis of different autoimmune conditions, including IBD. Therefore, there is a need for a practical tool to assess gut barrier integrity in these patients. Objective: To study factors associated with serum zonulin levels, a marker of intestinal permeability, in patients with IBD. Methods: This was a cross-sectional observational study that included 117 patients with IBD and 32 healthy controls. Disease activity was assessed by the Simple Clinical Colitis Activity Index (SCCAI) in UC and by the Harvey-Bradshaw Index (HBI) in CD subjects. Zonulin levels were measured by ELISA and inflammatory cytokines by Cytometric Bead Array, using commercially available kits. Results: The mean age of IBD patients was 44.0±15.9 years, 66.7% were female, 57 subjects were diagnosed with CD and 60 with UC. At evaluation, clinical remission was observed in 56.7% of CD patients and in 59.2% of UC subjects. No differences were observed in zonulin levels when comparing IBD patients with the control group (95.28 ng/mL vs 96.61 ng/mL, P=0.573) and when comparing patients with CD to those with UC (79.68 ng/mL vs 106.10 ng/mL, P=0.887). Among IBD group, zonulin concentrations were higher among females, correlated positively with body mass index (BMI) and age; and negatively with hemoglobin and hematocrit. In patients with UC, zonulin correlated negatively with hemoglobin, hematocrit, and albumin; and positively with BMI and SCCAI. Among CD patients, zonulin was positively correlated with age and BMI, but not with HBI. No correlations were observed between zonulin and circulating cytokines in IBD patients. Conclusion: In this cohort mostly comprised of patients in clinical remission, serum zonulin levels were not higher in patients with IBD than healthy controls, and correlated with variables not linked to baseline disease, such as sex, age and BMI. However, zonulin correlated with clinical and laboratory parameters of disease severity and activity among subjects with UC, but not among patients with CD. These findings indicate a potential role for zonulin as a biomarker in IBD, particularly in UC.

https://doi.org/10.1590/s0004-2803.202202000-43

BRAZILIAN SOCIETY OF HEPATOLOGY UPDATED RECOMMENDATIONS FOR DIAGNOSIS AND TREATMENT OF HEPATOCELLULAR CARCINOMA
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CHAGAS, Aline Lopes

; MATTOS, Angelo Alves de

; CARRILHO, Flair José

; BITTENCOURT, Paulo Lisboa

; VEZOZZO, Denise Cerqueira Paranaguá

; HORVAT, Natally

; ROCHA, Manoel de Souza

; ALVES, Venâncio Avancini Ferreira

; CORAL, Gabriela Perdomo

; ALVARES-DA-SILVA, Mario Reis

; BARROS, Fabio Marinho do Rego

; MENEZES, Marcos Roberto

; MONSIGNORE, Lucas Moretti

; COELHO, Fabricio Ferreira

; SILVA, Renato Ferreira da

; SILVA, Rita de Cássia Martins Alves

; BOIN, Ilka de Fatima Santana Ferreira

; D`ALBUQUERQUE, Luiz Augusto Carneiro

; GARCIA, José Huygens Parente

; FELGA, Guilherme Eduardo Gonçalves

; MOREIRA, Airton Mota

; BRAGHIROLI, Maria Ignez Freitas Melro

; HOFF, Paulo Marcelo Gehm

; MELLO, Vivianne Barretto de

; DOTTORI, Mariana Fonseca

; BRANCO, Tiago Pugliese

; SCHIAVON, Leonardo de Lucca

; COSTA, Thaisa de Fátima Almeida

Arquivos de Gastroenterologia

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2020, Volume 57 Suppl. 1 Pages 1 - 20

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

RESUMO O carcinoma hepatocelular (CHC) é uma das principais causas de mortalidade relacionada a câncer no Brasil e no mundo. A Sociedade Brasileira de Hepatologia (SBH) publicou em 2015 suas primeiras recomendações sobre a abordagem do CHC. Desde então, novas evidências sobre o diagnóstico e tratamento do CHC foram relatadas na literatura médica, levando a diretoria da SBH a promover uma reunião monotemática sobre câncer primário de fígado em agosto de 2018 com o intuito de atualizar as recomendações sobre o manejo da neoplasia. Um grupo de experts foi convidado para realizar uma revisão sistemática da literatura e apresentar uma atualização baseada em evidências científicas visando que pudesse nortear a prática clínica multidisciplinar do CHC. O texto resultante foi submetido a avaliação e aprovação de todos membros da SBH através de sua homepage. O documento atual é a versão final que contêm as recomendações atualizadas e revisadas da SBH.

ABSTRACT Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related mortality worldwide. The Brazilian Society of Hepatology (SBH) published in 2015 its first recommendations about the management of HCC. Since then, new data have emerged in the literature, prompting the governing board of SBH to sponsor a single-topic meeting in August 2018 in São Paulo. All the invited experts were asked to make a systematic review of the literature reviewing the management of HCC in subjects with cirrhosis. After the meeting, all panelists gathered together for the discussion of the topics and the elaboration of updated recommendations. The text was subsequently submitted for suggestions and approval of all members of the Brazilian Society of Hepatology through its homepage. The present manuscript is the final version of the reviewed manuscript containing the recommendations of SBH.

https://doi.org/10.1590/s0004-2803.202000000-20 4088 downloads

Hepatitis aguda recurrente inducida por albendazol
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Narciso-Schiavon, Janaína Luz

; Delziovo, Henrique Antonio

; Benthien Santos, Lucas Eduardo

; Cacese Shiozawa, Maria Beatriz

; Lucca Schiavon, Leonardo

Revista colombiana de Gastroenterología

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dec 2018, Volume 33 N. 4 Pages 473 - 477

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen El albendazol es un medicamento usado para tratar infecciones por helmintos y usualmente presenta pocos o ningún efecto secundario. A pesar de que hay un incremento transitorio de enzimas hepáticas luego de su uso, existe poca evidencia en la literatura en la que se reporte lesión hepática luego de automedicación con albendazol. En este informe, el paciente se presentó con hepatitis aguda luego de automedicarse con albendazol. El paciente cuenta además con una historia de episodios similares después de haber usado el fármaco. Se evaluada la causalidad con el método de evaluación de causalidad de Roussel Uclaf del Concejo para Organizaciones Internacionales de Ciencias Médicas, cuyo resultado fue un puntaje de 10, lo que indicó una alta probabilidad de lesión hepática inducida por albendazol al cabo de realizarse una investigación rigurosa y de excluir otras posibles causas de la condición física del paciente. En conclusión, aunque es ideal agilizar el proceso para combatir a los helmintos, es necesario intensificar la necesidad de monitorizaciones de calidad para evitar reacciones adversas como la hepatitis inducida por medicamentos. Asimismo, la automedicación de cualquier medicamento debe ser siempre evitada.

Abstract Albendazole is used to treat helminth infections and usually has minimal or no side effects. A transient increase in liver enzymes is common following its use, but little evidence of albendazole-induced liver damage has been reported in the literature. This study presents a patient who developed acute hepatitis following self-medication with albendazole. The patient also had a history of similar episodes in the past after using the drug. After a thorough investigation and exclusion of all other causes of the patient’s clinical condition, the Roussel Uclaf Causality Assessment Method of the Council for International Organizations of Medical Sciences scale yielded a score of 10 points, indicating a high probability of albendazole-induced liver damage. In conclusion, expediting the process of combating helminths is ideal, but quality monitoring is required to avoid adverse reactions such as drug-induced hepatitis. Moreover, self-medication with any drug should always be discouraged.

https://doi.org/10.22516/25007440.206 2618 downloads

Doença cística da adventícia na veia basílica: relato de caso
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Vasconcelos, Rafael Sampaio

; Cherubim Filho, Cesar Augusto

; França, Felipe Mavignier Pereira

; D'allacqua, Eduardo de Lucca

; Dalio, Marcelo Bellini

; Joviliano, Edwaldo Edner

Jornal Vascular Brasileiro

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sep 2016, Volume 15 N. 3 Pages 245 - 249

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

Resumo A doença cística da adventícia é uma entidade rara que acomete principalmente a artéria poplítea. A ocorrência em veias é muito rara, e sua etiologia é desconhecida. Clinicamente, apresenta-se como isquemia, trombose ou dor a depender do território acometido. Apresentamos o caso de um paciente masculino jovem referindo nódulo no braço esquerdo. A angiorressonância magnética do membro mostrou lesão cística em contato com a veia basílica, com conteúdo homogêneo e sem realce pós-contraste. Foi realizada ressecção da lesão em bloco com o segmento venoso envolvido. O estudo anatomopatológico foi sugestivo de cisto de adventícia de veia basílica.

Abstract Cystic adventitial disease is a rare entity that most often involves the popliteal artery. It rarely occurs in veins. Its etiology is unknown. Clinically, it presents with ischemia, thrombosis or pain, depending on the vessel affected. Here we present the case of a young male with a nodule in the left arm. Magnetic resonance angiography showed a cystic lesion in contact with the basilic vein, with homogenous content without post-contrast enhancement. The lesion was resected en bloc together with the venous segment involved. The results of microscopic analysis were suggestive of basilic vein cystic adventitial disease.

https://doi.org/10.1590/1677-5449.002616 4685 downloads

Clinical and epidemiological profile of female blood donors with positive serology for viral hepatitis B
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Narciso-Schiavon, Janaína Luz

; Schiavon, Leonardo de Lucca

; Carvalho-Filho, Roberto José de

; Emori, Christine Takemi

; Maryia, Fernando Akio

; Bordin, José Orlando

; Silva, Antonio Eduardo Benedito

; Ferraz, Maria Lucia Gomes

Revista da Sociedade Brasileira de Medicina Tropical

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oct 2015, Volume 48 N. 5 Pages 524 - 531

Abstract: En | Text: En | PDF: En

ABSTRACTINTRODUCTION:Since women are frequently the minority among blood donors worldwide, studies evaluating this population usually reflect male features. We assessed the features of female blood donors with positive serology for HBV and compared them with those of men.METHODS The study comprised consecutive blood donors referred to a specialized liver disease center to be evaluated due to HBsAg- and/or anti-HBc-positive tests.RESULTS: The study encompassed 1,273 individuals, 219 (17.2%) of whom were referred due to positive HBsAg test and 1,054 (82.8%) due to reactive anti-HBc test. Subjects' mean age was 36.8±10.9 years, and 28.7% were women. Female blood donors referred for positive HBsAg screening tests demonstrated higher prevalence of healthcare workers (9.3% vs 2.5%) and lower prevalence of sexual risk behaviors (15.1% vs 41.1%) and alcohol abuse (1.9% vs 19.8%) compared to men. Women had lower ALT (0.6 vs 0.8×ULN), AST (0.6 vs 0.8×ULN), direct bilirubin (0.2 vs 0.3mg/dL), and alkaline phosphatase (0.5 vs 0.6×ULN) levels and higher platelet count (223,380±50,293 vs 195,020±53,060/mm3). Women also had a higher prevalence of false-positive results (29.6% vs 17.0%). No differences were observed with respect to liver biopsies. Female blood donors referenced for reactive anti-HBc screening tests presented similar clinical, epidemiological, and biochemical characteristics to those reported for positive HBsAg screening tests and similarly had a higher prevalence of false-reactive results.CONCLUSIONS: Compared to men, female blood donors with positive HBsAg and/or anti-HBc screening tests demonstrated higher prevalence of professional risk and false-positive results and reduced alteration of liver chemistry.

https://doi.org/10.1590/0037-8682-0157-2015 2600 downloads

Estudo anatomopatológico em tecidos condenados pelo Serviço de Inspeção Federal (SIF) por suspeita de tuberculose
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Mendes, Ricardo Evandro

; Schneider, Aline Félix

; Werlich, Dennys Eduardo

; Lucca, Neuber José

; Lorenzett, Marina Paula

; Pilati, Célso

Ciência Animal Brasileira

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dec 2013, Volume 14 N. 4 Pages 448 - 453

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

A metodologia utilizada pela inspeção animal na linha de abate tem gerado controvérsias entre o que deve ser condenado e liberado ao consumo. Acredita-se que órgãos e carcaças estejam sendo condenados por tuberculose sem apresentarem lesão microscópica compatível com tal patologia. O objetivo deste trabalho foi identificar as lesões microscópicas encontradas em amostras de linfonodos condenados por tuberculose pelo SIF (Serviço de Inspeção Federal). Foram coletadas 61 amostras condenadas pelo SIF por suspeita de tuberculose. Os linfonodos foram fixados em formalina tamponada 10%, recortados, processados rotineiramente e incluídos em parafina. Na avaliação realizada pela coloração de Hematoxilina e Eosina (H), observaram-se 55 granulomas tuberculóides e três granulomas actinomicóides, um linfonodo apresentando cristais com leve reação inflamatória e dois hiperplasia linfóide. Concluímos, portanto, que o índice de acerto de condenação de lesões de linfonodos por tuberculose foi satisfatório, entretanto poderia ser melhorado.

The methodology used during the Animal Standard Meat Inspection (SIS) has been controversial in the decision to condemn or approve materials for human consumption. The aim of this study was to identify the microscopic lesions found in lymph node tissues condemned for tuberculosis by the Brazilian SIS. Sixty-one condemned lymph nodes were collected, fixed in buffered formalin 10% and submitted to histological processing. By evaluating the condemned tissues with H stain, 55 tuberculoid granuloma were found, as well as three actinomycosis granuloma, 2 presenting lymphoid hyperplasia and 1 crystal deposition. The misdiagnosis rate in the samples condemned due to tuberculosis was satisfactory, however it can be improved.

https://doi.org/10.5216/cab.v14I4.8581 2073 downloads Cited 1 time in SciELO

10.

Serological detection of St. Louis encephalitis virus and West Nile virus in equines from Santa Fe, Argentina
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Tauro, Laura

; Marino, Betina

; Diaz, Luis Adrian

; Lucca, Eduardo

; Gallozo, Debora

; Spinsanti, Lorena

; Contigiani, Marta

Memórias do Instituto Oswaldo Cruz

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jun 2012, Volume 107 N. 4 Pages 553 - 556

Abstract: En | Text: En | PDF: En

St. Louis encephalitis virus (SLEV) and West Nile virus (WNV) present ecological and antigenic similarities and are responsible for serious human diseases. In addition, WNV is a significant pathogen in terms of equine health. The purpose of our study was to analyse the seroprevalence of SLEV and WNV in equine sera collected in Santa Fe Province, Argentina. The seroprevalence determined using the plaque reduction neutralisation test was 12.2% for SLEV, 16.2% for WNV and 48.6% for a combination of both viruses. These results provide evidence of the co-circulation of SLEV and WNV in equines in Santa Fe.

2767 downloads Cited 3 times in SciELO

11.

Talk test como método para controle da intensidade de exercício
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De Lucca, Leonardo

; Freccia, Guilherme Weiss

; Silva, Adriano Eduardo Lima e

; Oliveira, Fernando Roberto de

Revista Brasileira de Cineantropometria & Desempenho Humano

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2012, Volume 14 N. 1 Pages 114 - 124

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

O Talk Test ou limiar de conversação é um método simples e não-invasivo para controle da intensidade de exercício. O pressuposto básico de tal método é que, em determinadas intensidades de exercício, o indivíduo não pode mais manter uma conversa confortável e que a ventilação e outras respostas fisiológicas estão associadas a essa inabilidade. Com isso, alguns limiares de transição fisiológica (LTF) podem ser determinados de maneira indireta através da dificuldade na fala. Estudos passaram a explorar esta alternativa, investigando a sua relação com variáveis fisiológicas e psicofísicas, bem como evidências de validade de aplicação para várias populações, principalmente, nas últimas duas décadas, quando se nota crescente atenção da comunidade científica. O objetivo desta revisão é trazer informações relevantes sobre os estudos que utilizaram o Talk Test como estimativa de limiares de transição fisiológica e intensidades de esforço em distintas populações. São apresentados aspectos como o controle fisiológico da fala em repouso e durante o exercício, contextualização do limiar de conversação, delineamentos metodológicos utilizados e as relações entre o Talk Test e os limiares de transição fisiológica. A revisão foi feita a partir de buscas de artigos referentes ao tópico na base de dados Medline, Lilacs e Sportsdiscuss, sendo complementado com a produção recente de nosso grupo de pesquisa. Conclui-se que o Talk Test pode predizer limiares fisiológicos e delimitar zonas de segurança para exercício aeróbio para diversas populações. No entanto, necessita-se de estudos que aprimorem o protocolo de fala para a comparação e associação com outras variáveis fisiológicas e psicofísicas.

The Talk Test (TT) or conversation threshold is a simple and subjective method used to control exercise intensity by a no invasive manner. The basis of this method is that, for many exercise intensities, subjects are not able to maintain comfortable speech and ventilation and other physiological responses are associated to this inability. Thus, some physiological transition thresholds (LTF) can be predicted indirectly by speech difficult. Several studies have explored this alternative by investigating its relationship to physiological and psychophysical variables and evidence of validity for application in distinct populations. It occurred mainly at the 2 last decades which great attention have been given by the scientific community. The aim of this review is to make a discussion about the studies which used the Talk Test to estimate physiological transition thresholds and effort intensities in distinct populations. We present some aspects, such as physiological mechanisms of speech control during exercise, the context of talk test, the methodological alternatives applied, the hypothetical relationship between the talk test and physiological transition thresholds. The search for scientific articles related to this topic was done at the Medline, Lilacs e SportDiscus databases, and by the last studies from our research group. In conclusion, speech production difficult can predict physiological thresholds and identify target zones to aerobic exercise for many populations. However, further studies have to improve the speech protocol for comparison to other physiological and psychophysical variables.

https://doi.org/10.5007/1980-0037.2012v14n1p114 11013 downloads

12.

Clinical characteristics associated with hepatic steatosis on ultrasonography in patients with elevated alanine aminotransferase
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Narciso-Schiavon, Janaína Luz

; Schiavon, Leonardo de Lucca

; Carvalho-Filho, Roberto José de

; Hayashida, Débora Yumi

; Wang, Jenny Hue Jiuan

; Souza, Tatiana Santana

; Emori, Christini Takemi

; Ferraz, Maria Lucia Gomes

; Silva, Antonio Eduardo Benedito

Sao Paulo Medical Journal

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dec 2010, Volume 128 N. 6 Pages 342 - 347

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

CONTEXTO E OBJETIVO: Doença hepática alcoólica e doença hepática esteatótica não alcoólica (DHENA) são as principais causas de esteatose hepática (EH). Apesar de a biópsia hepática ser o método de escolha para diagnóstico DHENA, o achado de aminotransferases elevadas em indivíduos abstêmios, sem doença hepática conhecida, sugere o diagnóstico de DHENA em 80-90% dos casos. A identificação de variáveis clínicas associadas à EH na ultrassonografia abdominal pode permitir o diagnóstico de DHENA de forma não invasiva e custo-efetiva. O objetivo foi identificar variáveis clínicas associadas à EH em indivíduos com níveis elevados de alanina aminotransferase (ALT). TIPO DE ESTUDO E LOCAL: Estudo transversal em um único centro de atendimento terciário. MÉTODOS: Indivíduos com ALT elevada e sorologias negativas para os vírus de hepatite B e C foram avaliados por meio de revisão de prontuários. Os pacientes não submetidos à ultrassonografia foram excluídos. RESULTADOS: Foram incluídos 94 indivíduos, 40% deles com EH à ultrassonografia. Quando comparados aos indivíduos sem EH, aqueles com EH apresentaram maior prevalência de diabetes (P = 0,024), maiores idade (P = 0,043) e índice de massa corpórea (IMC) (P = 0,003), glicemia de jejum mais elevada (P = 0,001) e triglicerídeos mais elevados (P = 0,003). A análise multivariada evidenciou que o IMC (odds ratio, OR = 1,186, 95% intervalo de confiança, IC 1,049-1,341, P = 0,006) e o diabetes mellitus (OR = 12,721, 95% IC 1,380-117,247, P = 0,025) foram associadas independentemente à EH. CONCLUSÕES: Achados clínicos simples como história de diabetes e o IMC elevado podem predizer a presença de EH à ultrassonografia de indivíduos com ALT elevada e sorologias negativas para hepatite.

CONTEXT AND OBJECTIVE: The main causes of hepatic steatosis (HS) are alcoholic liver disease and nonalcoholic fatty liver disease (NAFLD). Although liver biopsy is the gold standard for NAFLD diagnosis, the finding of abnormal aminotransferases in abstinent individuals, without known liver disease, suggests the diagnosis of NAFLD in 80-90% of the cases. Identification of clinical factors associated with HS on abdominal ultrasound may enable diagnoses of fatty liver non-invasively and cost-effectively. The aim here was to identify clinical variables associated with HS in individuals with elevated alanine aminotransferase (ALT) levels. DESIGN AND SETTING: Cross-sectional study in a single tertiary care center. METHODS: Individuals with elevated ALT, serologically negative for hepatitis B and C, were evaluated by reviewing medical files. Patients who did not undergo abdominal ultrasonography were excluded. RESULTS: Among 94 individuals included, 40% presented HS on ultrasonography. Compared with individuals without HS, those with fatty liver were older (P = 0.043), with higher body mass index (BMI) (P = 0.003), diabetes prevalence (P = 0.024), fasting glucose levels (P = 0.001) and triglycerides (P = 0.003). Multivariate analysis showed that BMI (odds ratio, OR = 1.186; 95% confidence interval, CI: 1.049-1.341; P = 0.006) and diabetes mellitus (OR = 12.721; 95% CI: 1.380-117.247; P = 0.025) were independently associated with HS. CONCLUSIONS: Simple clinical findings such as history of diabetes and high BMI may predict the presence of HS on ultrasonography in individuals with elevated ALT and negative serological tests for hepatitis.

4232 downloads

13.

Gender influence on treatment of chronic hepatitis C genotype 1
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Narciso-Schiavon, Janaína Luz

; Schiavon, Leonardo de Lucca

; Carvalho-Filho, Roberto José

; Sampaio, Juliana Peghini

; Batah, Philipe Nicolas El

; Barbosa, Denize Vieira

; Ferraz, Maria Lucia Gomes

; Silva, Antonio Eduardo Benedito

Revista da Sociedade Brasileira de Medicina Tropical

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jun 2010, Volume 43 N. 3 Pages 217 - 223

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

INTRODUÇÃO: Apesar dos vários estudos publicados a respeito do tratamento da hepatite C crônica (CHC) com Peg-Interferon (Peg-IFN) e ribavirina, se desconhece o real impacto do gênero sobre as características que influenciam a eficácia e a segurança da terapia antiviral em portadores de CHC. O objetivo deste estudo foi avaliar a influência do gênero no tratamento da CHC. MÉTODOS: Foi realizado um estudo analítico retrospectivo de portadores de CHC genótipo 1 tratados com Peg-IFN α-2b na dose de 1,5μg/kg ou Peg-IFN α-2a na dose de180μg/sem associado à ribavirina 1.000-1.250 mg/dia, de acordo com o peso, entre 2001 e 2007. RESULTADOS: Entre 181 pacientes submetidos ao tratamento, a média de idade foi de 46,4±11,0 anos e 46% eram mulheres. No pré-tratamento, 32% dos pacientes apresentavam fibrose avançada (F3-F4 Scheuer), e 83% dos indivíduos apresentavam carga viral >400.000IU/mL, sem diferença significativa entre os gêneros (p=0,428 e p=0,452, respectivamente). Quando comparadas aos homens, as mulheres exibiram maior incidência de eventos adversos como anemia (p<0,001) e maior necessidade de redução de dose tanto do Peg-IFN (p=0,004) quanto da ribavirina (p=0,006). Entretanto, as taxas de resposta virológica sustentada (RVS) não diferiram entre os gêneros (45% (mulheres) . vs 41% (homens); p=0,464). CONCLUSÕES: Este estudo sugere que homens e mulheres reagem à terapia combinada de forma diferente, especialmente com relação aos eventos adversos e à necessidade de modificação de dose. No entanto, essas diferenças não influenciam as taxas de RVS.

INTRODUCTION: Although various studies have been published regarding the treatment of chronic hepatitis C (CHC) with peginterferon (Peg-IFN) and ribavirin, little is known regarding the real impact of gender on the characteristics that influence the effectiveness and safety of antiviral treatment for CHC patients. The objective of this study was to evaluate the influence of gender on HCV treatment outcomes. METHODS: A retrospective analytical study was conducted among selected carriers of CHC genotype 1, who were treated with Peg-IFN α-2b at a dose of 1.5 μg/kg or Peg-IFN α-2a at a dose of 180 μg/week plus a ribavirin dose of 1,000-1,250 mg/day, according to weight, between 2001 and 2007. RESULTS: Among 181 patients undergoing treatment, the mean age was 46.4 ± 11.0 years and 46% were women. At baseline, 32% of the patients had advanced fibrosis (F3-F4 Scheuer), and 83% of the subjects had viral load > 400,000 IU/ml, without significant difference between the genders (p = 0.428 and p = 0.452, respectively). When compared with men, women had higher incidence of many adverse events such as anemia (p < 0.001) and higher need for dose reduction, for both Peg-IFN (p = 0.004) and ribavirin (p = 0.006). However, the rate of sustained virological response (SVR) did not differ between the genders: 45% (female) vs 41% (male); p=0.464. CONCLUSIONS: This study suggests that women and men react differently to combined therapy, especially in relation to the incidence of adverse events and the need for dose modification. Nevertheless, these differences do not influence the SVR rate.

4099 downloads Cited 4 times in SciELO

14.

Mucopolysaccharidosis I, II, and VI: brief review and guidelines for treatment
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Giugliani, Roberto

; Federhen, Andressa

; Muñoz Rojas, Maria Verônica

; Vieira, Taiane

; Artigalás, Osvaldo

; Lapagesse Pinto, Louise

; Azevedo, Ana Cecília

; Acosta, Angelina

; Bonfim, Carmen

; Lourenço, Charles Marques

; Chong Ae, Kim

; Horovitz, Dafne

; Bonfim, Denize

; Norato, Denise

; Marinho, Diane

; Palhares, Durval

; Santos, Emerson Santana

; Ribeiro, Erlane

; Valadares, Eugênia

; Guarany, Fábio

; Lucca, Gisele Rosone de

; Pimentel, Helena

; Souza, Isabel Neves de

; Correa Neto, Jordão

; Fraga, José Carlos

; Goes, José Eduardo

; Cabral, José Maria

; Simionato, José

; Llerena Jr., Juan

; Jardim, Laura

; Giuliani, Liane

; Silva, Luiz Carlos Santana da

; Santos, Mara L.

; Moreira, Maria Angela

; Kerstenetzky, Marcelo

; Ribeiro, Márcia

; Ruas, Nicole

; Barrios, Patricia

; Aranda, Paulo

; Honjo, Rachel

; Boy, Raquel

; Costa, Ronaldo

; Souza, Carolina

; Alcantara, Flavio F.

; Avilla, Silvio Gilberto A.

; Fagondes, Simone

; Martins, Ana Maria

Genetics and Molecular Biology

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2010, Volume 33 N. 4 Pages 589 - 604

Abstract: En | Text: En | PDF: En

Mucopolysaccharidoses (MPS) are rare genetic diseases caused by the deficiency of one of the lysosomal enzymes involved in the glycosaminoglycan (GAG) breakdown pathway. This metabolic block leads to the accumulation of GAG in various organs and tissues of the affected patients, resulting in a multisystemic clinical picture, sometimes including cognitive impairment. Until the beginning of the XXI century, treatment was mainly supportive. Bone marrow transplantation improved the natural course of the disease in some types of MPS, but the morbidity and mortality restricted its use to selected cases. The identification of the genes involved, the new molecular biology tools and the availability of animal models made it possible to develop specific enzyme replacement therapies (ERT) for these diseases. At present, a great number of Brazilian medical centers from all regions of the country have experience with ERT for MPS I, II, and VI, acquired not only through patient treatment but also in clinical trials. Taking the three types of MPS together, over 200 patients have been treated with ERT in our country. This document summarizes the experience of the professionals involved, along with the data available in the international literature, bringing together and harmonizing the information available on the management of these severe and progressive diseases, thus disclosing new prospects for Brazilian patients affected by these conditions.

8605 downloads Cited 6 times in SciELO

15.

Terapia de reposição enzimática para as mucopolissacaridoses I, II e VI: recomendações de um grupo de especialistas brasileiros
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Giugliani, Roberto

; Federhen, Andressa

; Muñoz Rojas, Maria Verónica

; Vieira, Taiane Alves

; Artigalás, Osvaldo

; Pinto, Louise Lapagesse Carmargo

; Azevedo, Ana Cecília

; Acosta, Angelina Xavier

; Bomfim, Carmem

; Lourenço, Charles Marques

; Kim, Chong Ae

; Horovitz, Dafne

; Souza, Denize Bomfim

; Norato, Denise

; Marinho, Diane

; Palhares, Durval

; Santos, Emerson Santana

; Ribeiro, Erlane

; Valadares, Eugênia Ribeiro

; Guarany, Fábio

; De Lucca, Gisele Rosone

; Pimentel, Helena

; Souza, Isabel Neves de

; Corrêa Neto, Jordão

; Fraga, José Carlos

; Góes, José Eduardo

; Cabral, José Maria

; Simeonato, José

; Llerena Jr, Juan Clinton

; Jardim, Laura Bannach

; Giuliani, Liane de Rosso

; Silva, Luiz Carlos Santana da

; Santos, Mara

; Moreira, Maria Ângela

; Kerstenetzky, Marcelo

; Ribeiro, Márcia

; Ruas, Nicole

; Barrios, Patricia

; Aranda, Paulo

; Honjo, Rachel

; Boy, Raquel

; Costa, Ronaldo

; Souza, Carolina Fishinger Moura de

; Alcântara, Flavio F

; Avilla, Sylvio Gilberto A

; Fagondes, Simone

; Martins, Ana Maria

Revista da Associação Médica Brasileira

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2010, Volume 56 N. 3 Pages 271 - 277

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

As mucopolissacaridoses (MPS) são doenças genéticas raras causadas pela deficiência de enzimas lisossômicas específicas que afetam o catabolismo de glicosaminoglicanos (GAG). O acúmulo de GAG em vários órgãos e tecidos nos pacientes afetados pelas MPS resulta em uma série de sinais e sintomas, integrantes de um quadro clínico multissistêmico que compromete ossos e articulações, vias respiratórias, sistema cardiovascular e muitos outros órgãos e tecidos, incluindo, em alguns casos, as funções cognitivas. Já foram identificados 11 defeitos enzimáticos que causam sete tipos diferentes de MPS. Antes do advento de terapias dirigidas para a restauração da atividade da enzima deficiente, o tratamento das MPS tinha como principal foco a prevenção e o cuidado das complicações, aspecto ainda bastante importante no manejo desses pacientes. Na década de 80 foi proposto o tratamento das MPS com transplante de medula óssea/transplante de células tronco hematopoiéticas (TMO/TCTH) e na década de 90 começou o desenvolvimento da Terapia de Reposição Enzimática (TRE), que se tornou uma realidade aprovada para uso clínico nas MPS I, II e VI na primeira década do século 21. Os autores deste trabalho têm a convicção de que um melhor futuro para os pacientes afetados pelas MPS depende da identificação, compreensão e manejo adequado das manifestações multissistêmicas dessas doenças, incluindo medidas de suporte (que devem fazer parte da assistência multidisciplinar regular destes pacientes) e terapias específicas. Embora a inibição da síntese de GAG e o resgate da atividade enzimática com moléculas pequenas também possam vir a ter um papel no manejo das MPS, o grande avanço disponível no momento é a TRE intravenosa. A TRE permitiu modificar radicalmente o panorama do tratamento das mucopolissacaridoses I, II e VI na última década, sendo que ainda pode estender seus benefícios em breve para a MPS IV A (cuja TRE já está em desenvolvimento clínico), com perspectivas para o tratamento da MPS III A e do déficit cognitivo na MPS II através de administração da enzima diretamente no sistema nervoso central (SNC). Um grande número de centros brasileiros, incluindo serviços de todas as regiões do país, já têm experiência com TRE para MPS I, II e VI. Essa experiência foi adquirida não só com o tratamento de pacientes como também com a participação de alguns grupos em ensaios clínicos envolvendo TRE para essas condições. Somados os três tipos de MPS, mais de 250 pacientes já foram tratados com TRE em nosso país. A experiência dos profissionais brasileiros, somada aos dados disponíveis na literatura internacional, permitiu elaborar este documento, produzido com o objetivo de reunir e harmonizar as informações disponíveis sobre o tratamento destas doenças graves e progressivas, mas que, felizmente, são hoje tratáveis, uma realidade que traz novas perspectivas para os pacientes brasileiros afetados por essas condições.

Mucopolysaccharidoses (MPS) are rare genetic diseases caused by deficiency of specific lysosomal enzymes that affect catabolism of glycosaminoglycans (GAG). Accumulation of GAG in various organs and tissues in MPS patients results in a series of signs and symptoms, producing a multisystemic condition affecting bones and joints, the respiratory and cardiovascular systems and many other organs and tissues, including in some cases, cognitive performance. So far, eleven enzyme defects that cause seven different types of MPS have been identified. Before introduction of therapies to restore deficient enzyme activity, treatment of MPS focused primnarily on prevention and care of complications, still a very important aspect in the management of these patients. In the 80's treatment of MPS with bone marrow transplantation/hematopoietic stem cells transplantation (BMT/HSCT) was proposed and in the 90's, enzyme replacement therapy (ERT),began to be developed and was approved for clinical use in MPS I, II and VI in the first decade of the 21st century. The authors of this paper are convinced that a better future for patients affected by mucopolysaccharidoses depends upon identifying, understanding and appropriately managing the multisystemic manifestations of these diseases. This includes the provision of support measures (which should be part of regular multidisciplinary care of these patients) and of specific therapies. Although inhibition of synthesis of GAG and the recovery of enzyme activity with small molecules also may play a role in the management of MPS, the breakthrough is the currently available intravenous ERT. ERT radically changed the setting for treatment of mucopolysaccharidosis I, II and VI in the last decade., Benefits can even be extended soon to MPS IV A (ERT for this condition is already in clinical development), with prediction for treatment of MPS III A and the cognitive deficit in MPS II by administration of the enzyme directly into the central nervous system (CNS). A large number of Brazilian services, from all regions of the country, already have experience with ERT for MPS I, II and VI. This experience was gained not only by treating patients but also with the participation of some groups in clinical trials involving ERT for these conditions. Summing up the three types of MPS, more than 250 patients have already been treated with ERT in Brazil. The experience of professionals coupled to the data available in international literature, allowed us to elaborate this document, produced with the goal of bringing together and harmonize the information available for the treatment of these severe and progressive diseases, which, fortunately, are now treatable, a situation which bring new perspectives for Brazilian patients, affected by these conditions.

25082 downloads Cited 2 times in SciELO

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