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1.
Ontogenetic change in the diet of Semaprochilodus insignis (Characiformes: Prochilodontidae) during migration between two limnologically distinct environments in the Amazon Basin
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Soares, Neiliane N.
; deHart, Pieter A. P.
; Marshall, Bruce G.
; Pouilly, Marc
; Oliveira, Ana C. B.
; Bussons, Márcia R. F. M.
; Freitas, Carlos E. C.
; Yamamoto, Kedma C.
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Resumo Semaprochilodus insignis é uma espécie de peixe migratório da Amazônia, movendo-se em cardumes entre rios de água branca e preta. Tem sido classificado como um peixe detritívoro-iliófago. Porém, é possível que a plasticidade trófica de S. insignis seja maior do que se supunha. O objetivo deste estudo foi investigar as contribuições relativas de fontes de energia autotróficas para a dieta do S. insignis nos rios Negro e Solimões e se a espécie muda ontogenticamente a sua dieta. Encontramos variações entre os valores de δ13C e δ15N de S. insignis entre os rios: Negro, o perifíton (84%) foi a principal fonte de energia para adultos, enquanto para os juvenis do rio Solimões, foram predominantemente as plantas terrestres/macrófitas C3 (50%) e fitoplâncton (42%). Essas variações nas assinaturas isotópicas provavelmente estão associadas a movimentos migratórios do S. insignis em diferentes estágios da vida e períodos hidrológicos. Ao invés da classificação alimentar previamente assumida, sugerimos que o S. insignis varie sua dieta ontogeneticamente, os adultos são iliófagos em águas negras, enquanto os jovens são detritívoros em rios de águas brancas. Os resultados demonstram que essa espécie promove ligações complexas entre as cadeias alimentares enfatizando, dessa forma, a importância da conservação das áreas inundadas amazônicas.
Abstract Semaprochilodus insignis is an Amazonian migratory fish species, moving in large shoals between white- and black-water rivers. It has long been classified as a detritivorous fish. However, it is possible that the trophic plasticity of S. insignis could be higher than previously assumed. The objective of this study was to investigate the relative contributions of autotrophic energy sources to the diet of S. insignis in the Negro and Solimões rivers and to determine if the species undergoes an ontogenetic change in the diet. We found variations between the δ13C and δ15N values of S. insignis between the rivers. In the Negro River, periphyton (84%) was the principal energy source for adults, while juveniles in the Solimões River foraged predominantly on terrestrial plants/C3 macrophytes (50%) and phytoplankton (42%). These variations in isotopic signatures are likely associated with migratory movements of S. insignis at different life stages and hydrological periods. Instead of the previously assumed dietary classification, we suggest that S. insignis varies its diet ontogenetically, with adults acting as illiophagous in black-water while the young are detritivorous in white-water rivers. The results show that this species creates complex links between food chains, thus emphasizing the importance of conserving flooded areas.
2.
Recommendations for quality assurance in multiparametric flow cytometry: first consensus of the Brazilian Group of Flow Cytometry (GBCFLUX)
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Correia, Rodolfo P.
; Bortolucci, Ana Carolina A.
; Lopes, Annelise C. W.
; Sandes, Alex F.
; Azambuja, Ana Paula de
; Viana, Marta A.
; Sales, Maria M.
; Yamamoto, Mihoko
; Bacal, Nydia S.
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Jornal Brasileiro de Patologia e Medicina Laboratorial
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RESUMO O Grupo Brasileiro de Citometria de Fluxo (GBCFLUX), fundado em 24 de abril de 2010, é composto por especialistas da área de citometria de fluxo (CF) que possuem o objetivo comum de contribuir para avanços técnico-científicos em laboratórios clínicos e de pesquisa brasileiros. Entre os grupos de trabalho do GBCFLUX, o subcomitê de Controle de Qualidade (CQ) é responsável por discutir dados da literatura e contribuir para a garantia da qualidade do processo pré-analítico, analítico e pós-analítico em CF. As ações do subcomitê de CQ iniciaram-se por meio de reuniões e palestras, nas quais dados da literatura foram revisados e discutidos com todos os membros participantes do GBCFLUX. Em uma segunda etapa, definiu-se elaborar um texto de recomendações consensuais técnicocientíficas, informativas e educativas para divulgação a todos os grupos que trabalham com CF no Brasil. Para tanto, foi elaborado um questionário com respostas objetivas, sendo enviado para 35 instituições brasileiras cadastradas, com a finalidade de avaliar o perfil de CQ dessas instituições. Dessa forma, as recomendações técnico-científicas de CQ que serão descritas neste artigo de atualização têm o objetivo de contribuir para a garantia da qualidade do processo, a padronização técnica e a reprodutibilidade dos resultados em CF.
ABSTRACT The Brazilian Group of Flow Cytometry (Grupo Brasileiro de Citometria de Fluxo [GBCFLUX]), founded on April 24, 2010, is composed of experts in flow cytometry (FC) area who have the common objective of contributing to technical and scientific advances in Brazilian clinical and research laboratories. Among GBCFLUX working groups, the Quality Control (QC) subcommittee is responsible for discussing data in the literature and contributes to the quality assurance of the pre-analytical, analytical and post-analytical process in FC. The QC subcommittee's actions began through meetings and lectures, in which data from the literature were reviewed and discussed with all participating members of the GBCFLUX. In a second step, it was decided to draw up a text of technical and scientific consensus recommendations, informative and educative, for dissemination to all FC working groups in Brazil. To this effect, a questionnaire with objective responses was designed and sent to 35 recognized Brazilian institutions, in order to evaluate the QC profile of these institutions. Thus, the QC technical-scientific recommendations, which will be described in this updating article, are intended to ensure the process quality, technical standardization, and reproducibility of results in FC.
https://doi.org/10.5935/1676-2444.20150061
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3.
Growing knowledge: an overview of Seed Plant diversity in Brazil
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Zappi, Daniela C.
; Filardi, Fabiana L. Ranzato
; Leitman, Paula
; Souza, Vinícius C.
; Walter, Bruno M.T.
; Pirani, José R.
; Morim, Marli P.
; Queiroz, Luciano P.
; Cavalcanti, Taciana B.
; Mansano, Vidal F.
; Forzza, Rafaela C.
; Abreu, Maria C.
; Acevedo-Rodríguez, Pedro
; Agra, Maria F.
; Almeida Jr., Eduardo B.
; Almeida, Gracineide S.S.
; Almeida, Rafael F.
; Alves, Flávio M.
; Alves, Marccus
; Alves-Araujo, Anderson
; Amaral, Maria C.E.
; Amorim, André M.
; Amorim, Bruno
; Andrade, Ivanilza M.
; Andreata, Regina H.P.
; Andrino, Caroline O.
; Anunciação, Elisete A.
; Aona, Lidyanne Y.S.
; Aranguren, Yani
; Aranha Filho, João L.M.
; Araújo, Andrea O.
; Araújo, Ariclenes A.M.
; Araújo, Diogo
; Arbo, María M.
; Assis, Leandro
; Assis, Marta C.
; Assunção, Vivian A.
; Athiê-Souza, Sarah M.
; Azevedo, Cecilia O.
; Baitello, João B.
; Barberena, Felipe F.V.A.
; Barbosa, Maria R.V.
; Barros, Fábio
; Barros, Lucas A.V.
; Barros, Michel J.F.
; Baumgratz, José F.A.
; Bernacci, Luis C.
; Berry, Paul E.
; Bigio, Narcísio C.
; Biral, Leonardo
; Bittrich, Volker
; Borges, Rafael A.X.
; Bortoluzzi, Roseli L.C.
; Bove, Cláudia P.
; Bovini, Massimo G.
; Braga, João M.A.
; Braz, Denise M.
; Bringel Jr., João B.A.
; Bruniera, Carla P.
; Buturi, Camila V.
; Cabral, Elza
; Cabral, Fernanda N.
; Caddah, Mayara K.
; Caires, Claudenir S.
; Calazans, Luana S.B.
; Calió, Maria F.
; Camargo, Rodrigo A.
; Campbell, Lisa
; Canto-Dorow, Thais S.
; Carauta, Jorge P.P.
; Cardiel, José M.
; Cardoso, Domingos B.O.S.
; Cardoso, Leandro J.T.
; Carneiro, Camila R.
; Carneiro, Cláudia E.
; Carneiro-Torres, Daniela S.
; Carrijo, Tatiana T.
; Caruzo, Maria B.R.
; Carvalho, Maria L.S.
; Carvalho-Silva, Micheline
; Castello, Ana C.D.
; Cavalheiro, Larissa
; Cervi, Armando C.
; Chacon, Roberta G.
; Chautems, Alain
; Chiavegatto, Berenice
; Chukr, Nádia S.
; Coelho, Alexa A.O.P.
; Coelho, Marcus A.N.
; Coelho, Rubens L.G.
; Cordeiro, Inês
; Cordula, Elizabeth
; Cornejo, Xavier
; Côrtes, Ana L.A.
; Costa, Andrea F.
; Costa, Fabiane N.
; Costa, Jorge A.S.
; Costa, Leila C.
; Costa-e-Silva, Maria B.
; Costa-Lima, James L.
; Cota, Maria R.C.
; Couto, Ricardo S.
; Daly, Douglas C.
; De Stefano, Rodrigo D.
; De Toni, Karen
; Dematteis, Massimiliano
; Dettke, Greta A.
; Di Maio, Fernando R.
; Dórea, Marcos C.
; Duarte, Marília C.
; Dutilh, Julie H.A.
; Dutra, Valquíria F.
; Echternacht, Lívia
; Eggers, Lilian
; Esteves, Gerleni
; Ezcurra, Cecilia
; Falcão Junior, Marcus J.A.
; Feres, Fabíola
; Fernandes, José M.
; Ferreira, D.M.C.
; Ferreira, Fabrício M.
; Ferreira, Gabriel E.
; Ferreira, Priscila P.A.
; Ferreira, Silvana C.
; Ferrucci, Maria S.
; Fiaschi, Pedro
; Filgueiras, Tarciso S.
; Firens, Marcela
; Flores, Andreia S.
; Forero, Enrique
; Forster, Wellington
; Fortuna-Perez, Ana P.
; Fortunato, Reneé H.
; Fraga, Cléudio N.
; França, Flávio
; Francener, Augusto
; Freitas, Joelcio
; Freitas, Maria F.
; Fritsch, Peter W.
; Furtado, Samyra G.
; Gaglioti, André L.
; Garcia, Flávia C.P.
; Germano Filho, Pedro
; Giacomin, Leandro
; Gil, André S.B.
; Giulietti, Ana M.
; A.P.Godoy, Silvana
; Goldenberg, Renato
; Gomes da Costa, Géssica A.
; Gomes, Mário
; Gomes-Klein, Vera L.
; Gonçalves, Eduardo Gomes
; Graham, Shirley
; Groppo, Milton
; Guedes, Juliana S.
; Guimarães, Leonardo R.S.
; Guimarães, Paulo J.F.
; Guimarães, Elsie F.
; Gutierrez, Raul
; Harley, Raymond
; Hassemer, Gustavo
; Hattori, Eric K.O.
; Hefler, Sonia M.
; Heiden, Gustavo
; Henderson, Andrew
; Hensold, Nancy
; Hiepko, Paul
; Holanda, Ana S.S.
; Iganci, João R.V.
; Imig, Daniela C.
; Indriunas, Alexandre
; Jacques, Eliane L.
; Jardim, Jomar G.
; Kamer, Hiltje M.
; Kameyama, Cíntia
; Kinoshita, Luiza S.
; Kirizawa, Mizué
; Klitgaard, Bente B.
; Koch, Ingrid
; Koschnitzke, Cristiana
; Krauss, Nathália P.
; Kriebel, Ricardo
; Kuntz, Juliana
; Larocca, João
; Leal, Eduardo S.
; Lewis, Gwilym P.
; Lima, Carla T.
; Lima, Haroldo C.
; Lima, Itamar B.
; Lima, Laíce F.G.
; Lima, Laura C.P.
; Lima, Leticia R.
; Lima, Luís F.P.
; Lima, Rita B.
; Lírio, Elton J.
; Liro, Renata M.
; Lleras, Eduardo
; Lobão, Adriana
; Loeuille, Benoit
; Lohmann, Lúcia G.
; Loiola, Maria I.B.
; Lombardi, Julio A.
; Longhi-Wagner, Hilda M.
; Lopes, Rosana C.
; Lorencini, Tiago S.
; Louzada, Rafael B.
; Lovo, Juliana
; Lozano, Eduardo D.
; Lucas, Eve
; Ludtke, Raquel
; Luz, Christian L.
; Maas, Paul
; Machado, Anderson F.P.
; Macias, Leila
; Maciel, Jefferson R.
; Magenta, Mara A.G.
; Mamede, Maria C.H.
; Manoel, Evelin A.
; Marchioretto, Maria S.
; Marques, Juliana S.
; Marquete, Nilda
; Marquete, Ronaldo
; Martinelli, Gustavo
; Martins da Silva, Regina C.V.
; Martins, Ângela B.
; Martins, Erika R.
; Martins, Márcio L.L.
; Martins, Milena V.
; Martins, Renata C.
; Matias, Ligia Q.
; Maya-L., Carlos A.
; Mayo, Simon
; Mazine, Fiorella
; Medeiros, Debora
; Medeiros, Erika S.
; Medeiros, Herison
; Medeiros, João D.
; Meireles, José E.
; Mello-Silva, Renato
; Melo, Aline
; Melo, André L.
; Melo, Efigênia
; Melo, José I.M.
; Menezes, Cristine G.
; Menini Neto, Luiz
; Mentz, Lilian A.
; Mezzonato, A.C.
; Michelangeli, Fabián A.
; Milward-de-Azevedo, Michaele A.
; Miotto, Silvia T.S.
; Miranda, Vitor F.O.
; Mondin, Cláudio A.
; Monge, Marcelo
; Monteiro, Daniele
; Monteiro, Raquel F.
; Moraes, Marta D.
; Moraes, Pedro L.R.
; Mori, Scott A.
; Mota, Aline C.
; Mota, Nara F.O.
; Moura, Tania M.
; Mulgura, Maria
; Nakajima, Jimi N.
; Nardy, Camila
; Nascimento Júnior, José E.
; Noblick, Larry
; Nunes, Teonildes S.
; O'Leary, Nataly
; Oliveira, Arline S.
; Oliveira, Caetano T.
; Oliveira, Juliana A.
; Oliveira, Luciana S.D.
; Oliveira, Maria L.A.A.
; Oliveira, Regina C.
; Oliveira, Renata S.
; Oliveira, Reyjane P.
; Paixão-Souza, Bruno
; Parra, Lara R.
; Pasini, Eduardo
; Pastore, José F.B.
; Pastore, Mayara
; Paula-Souza, Juliana
; Pederneiras, Leandro C.
; Peixoto, Ariane L.
; Pelissari, Gisela
; Pellegrini, Marco O.O.
; Pennington, Toby
; Perdiz, Ricardo O.
; Pereira, Anna C.M.
; Pereira, Maria S.
; Pereira, Rodrigo A.S.
; Pessoa, Clenia
; Pessoa, Edlley M.
; Pessoa, Maria C.R.
; Pinto, Luiz J.S.
; Pinto, Rafael B.
; Pontes, Tiago A.
; Prance, Ghillean T.
; Proença, Carolyn
; Profice, Sheila R.
; Pscheidt, Allan C.
; Queiroz, George A.
; Queiroz, Rubens T.
; Quinet, Alexandre
; Rainer, Heimo
; Ramos, Eliana
; Rando, Juliana G.
; Rapini, Alessandro
; Reginato, Marcelo
; Reis, Ilka P.
; Reis, Priscila A.
; Ribeiro, André R.O.
; Ribeiro, José E.L.S.
; Riina, Ricarda
; Ritter, Mara R.
; Rivadavia, Fernando
; Rocha, Antônio E.S.
; Rocha, Maria J.R.
; Rodrigues, Izabella M.C.
; Rodrigues, Karina F.
; Rodrigues, Rodrigo S.
; Rodrigues, Rodrigo S.
; Rodrigues, Vinícius T.
; Rodrigues, William
; Romaniuc Neto, Sérgio
; Romão, Gerson O.
; Romero, Rosana
; Roque, Nádia
; Rosa, Patrícia
; Rossi, Lúcia
; Sá, Cyl F.C.
; Saavedra, Mariana M.
; Saka, Mariana
; Sakuragui, Cássia M.
; Salas, Roberto M.
; Sales, Margareth F.
; Salimena, Fatima R.G.
; Sampaio, Daniela
; Sancho, Gisela
; Sano, Paulo T.
; Santos, Alessandra
; Santos, Élide P.
; Santos, Juliana S.
; Santos, Marianna R.
; Santos-Gonçalves, Ana P.
; Santos-Silva, Fernanda
; São-Mateus, Wallace
; Saraiva, Deisy P.
; Saridakis, Dennis P.
; Sartori, Ângela L.B.
; Scalon, Viviane R.
; Schneider, Ângelo
; Sebastiani, Renata
; Secco, Ricardo S.
; Senna, Luisa
; Senna-Valle, Luci
; Shirasuna, Regina T.
; Silva Filho, Pedro J.S.
; Silva, Anádria S.
; Silva, Christian
; Silva, Genilson A.R.
; Silva, Gisele O.
; Silva, Márcia C.R.
; Silva, Marcos J.
; Silva, Marcos J.
; Silva, Otávio L.M.
; Silva, Rafaela A.P.
; Silva, Saura R.
; Silva, Tania R.S.
; Silva-Gonçalves, Kelly C.
; Silva-Luz, Cíntia L.
; Simão-Bianchini, Rosângela
; Simões, André O.
; Simpson, Beryl
; Siniscalchi, Carolina M.
; Siqueira Filho, José A.
; Siqueira, Carlos E.
; Siqueira, Josafá C.
; Smith, Nathan P.
; Snak, Cristiane
; Soares Neto, Raimundo L.
; Soares, Kelen P.
; Soares, Marcos V.B.
; Soares, Maria L.
; Soares, Polyana N.
; Sobral, Marcos
; Sodré, Rodolfo C.
; Somner, Genise V.
; Sothers, Cynthia A.
; Sousa, Danilo J.L.
; Souza, Elnatan B.
; Souza, Élvia R.
; Souza, Marcelo
; Souza, Maria L.D.R.
; Souza-Buturi, Fátima O.
; Spina, Andréa P.
; Stapf, María N.S.
; Stefano, Marina V.
; Stehmann, João R.
; Steinmann, Victor
; Takeuchi, Cátia
; Taylor, Charlotte M.
; Taylor, Nigel P.
; Teles, Aristônio M.
; Temponi, Lívia G.
; Terra-Araujo, Mário H.
; Thode, Veronica
; Thomas, W.Wayt
; Tissot-Squalli, Mara L.
; Torke, Benjamin M.
; Torres, Roseli B.
; Tozzi, Ana M.G.A.
; Trad, Rafaela J.
; Trevisan, Rafael
; Trovó, Marcelo
; Valls, José F.M.
; Vaz, Angela M.S.F.
; Versieux, Leonardo
; Viana, Pedro L.
; Vianna Filho, Marcelo D.M.
; Vieira, Ana O.S.
; Vieira, Diego D.
; Vignoli-Silva, Márcia
; Vilar, Thaisa
; Vinhos, Franklin
; Wallnöfer, Bruno
; Wanderley, Maria G.L.
; Wasshausen, Dieter
; Watanabe, Maurício T.C.
; Weigend, Maximilian
; Welker, Cassiano A.D.
; Woodgyer, Elizabeth
; Xifreda, Cecilia C.
; Yamamoto, Kikyo
; Zanin, Ana
; Zenni, Rafael D.
; Zickel, Carmem S
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Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.
Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.
https://doi.org/10.1590/2175-7860201566411
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4.
Leveduras do gênero Candida isoladas de sítios anatomicamente distintos de profissionais militares em Cuiabá (MT), Brasil
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Leite Júnior, Diniz Pereira
; Yamamoto, Ana Caroline Akeme
; Martins, Evelin Rodrigues
; Teixeira, Acy Fátima Rodrigues
; Hahn, Rosane Christine
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FUNDAMENTOS: Alguns fungos são habitantes do organismo humano e podem vir a causar alguma doença, quando há condições propícias para seu desenvolvimento. Infecções por leveduras são comuns e frequentes em pele e mucosas; contudo, espécies emergentes têm alterado o perfil epidemiológico. A habilidade de colonizar diversos sítios anatômicos tem sido associada à patogenicidade do gênero Candida, quando as condições ambientais são particularmente favoráveis. No caso de climas quentes e úmidos, os atritos sofridos pela pele ou as defesas imunitárias debilitadas podem fazer com que as leveduras deixem de ser comensais para se tornarem organismos patógenos. OBJETIVO: Diagnosticar candidíases em profissionais militares e avaliar a frequência dessas infecções nesses indivíduos. MÉTODOS: Os materiais clínicos analisados foram semeados em duplicata nos meios Sabouraud Dextrose-ágar (Difco) e Mycosel (Difco). Identificaram-se os agentes etiológicos por meio da observação de tubo germinativo, microcultivo e caracteres fisiológicos, assimilação de fontes de carbono (auxanograma) e fermentação de fontes de carbono (zimograma). RESULTADOS: De um total de 197 pacientes estudados, 91 (46,2%) apresentaram quadros clínicos de candidíases. A região genitocrural foi considerada a mais acometida (47,7%), seguida pelas regiões interdactilares (mãos e pés, 27,8%). C. albicans, C. parapsilosis, C. tropicalis, C. glabrata e espécies emergentes, como C. krusei e C. guilliermondii, foram identificadas. CONCLUSÃO: No ambiente de trabalho, o uso de calçados e de uniformes por longos períodos de tempo, associado ao estresse e à sudorese, foi considerado fator predisponente para o desenvolvimento das infecções fúngicas.
BACKGROUNDS: Some fungi are natural inhabitants of the human body but may result in disease when conditions are conducive to their development. Yeast infections are common and often occur in the skin and mucous membranes; however emerging species have changed this epidemiological profile. The ability to colonize different anatomical sites has been associated with the pathogenicity of Candida when environmental conditions are particularly favorable. In the case of hot, humid climates, the attrition suffered by the skin and weakened immune defenses may result in yeasts becoming pathogenic rather than commensal organisms. OBJECTIVE: The objective of this study was to diagnose yeast infections in military personnel and to evaluate the frequency of these infections in the individuals evaluated. METHODS: The clinical material analyzed was seeded in duplicate in Sabouraud dextrose agar (Difco™) and Mycosel medium (Difco™). The etiological agents were identified by observing the germ tubes, microculture and physiological characteristics, assimilation of carbon sources (auxanogram) and fermentation of carbon sources (zymogram). RESULTS: Of a total of 197 patients evaluated, 91 (46.2%) had episodes of candidiasis. The genitocrural region was the most commonly affected area (47.7%) followed by the interdigital regions (between the toes or fingers) (27.8%). Candida albicans, Candida parapsilosis, Candida tropicalis, Candida glabrata and emergent species such as Candida krusei and Candida guilliermondii were found. CONCLUSIONS: In the work environment, having to use shoes and uniforms for extended periods of time, in addition to stress and perspiration, were considered predisposing factors for the development of fungal infections.
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5.
Portal cd4+ and cd8+ t lymphocyte correlate to intensity of interface hepatitis in chronic hepatitis C
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Viso, Ana Teresa Rodriguez
; Barbosa, Thaís de Castro
; Yamamoto, Lídia
; Pagliari, Carla
; Fernandes, Elaine Raniero
; Brasil, Roosecelis Araújo
; Andrade Junior, Heitor Franco de
; Duarte, Maria Irma Seixas
; Barone, Antônio Alci
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Revista do Instituto de Medicina Tropical de São Paulo
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INTRODUÇÃO: A patogênese da hepatite C crônica ainda está em discussão. Sabe-se que linfócitos T (LT) CD4+ e CD8+ são tipicamente observados no espaço portal e peri-portal de pacientes com hepatite C crônica, mas o conhecimento exato de suas ações no fígado, bem como sua influência na progressão da doença hepática ainda estão em discussão. MÉTODOS: Os LT CD4+ e T CD8+ foram quantificados por imunohistoquímica nos espaços porta e peri-portais em 39 biópsias hepáticas de pacientes cronicamente infectados pelo vírus da hepatite C. Esses dados foram associados com os dados demográficos, as alterações histológicas, os achados laboratoriais dos pacientes com hepatite C e com os genótipos do vírus da hepatite C. RESULTADOS: Houve grande quantidade tanto de LT CD4+ como de CD8+, sendo que houve maior densidade de LTCD4+ do que CD8+ nos espaços portal e peri-portal. Tanto o número de linfócitos T CD4+ como de CD8+ foram diretamente relacionados com a intensidade da hepatite de interface. Os linfócitos T CD8+ foram estatisticamente relacionados às enzimas hepáticas. CONCLUSÃO: O encontro de numerosos linfócitos T CD4+ e linfócitos T CD8+ no espaço-portal e peri-portal e sua correlação com a hepatite de interface sugerem que a evolução da hepatite C dependa da ação dos linfócitos T intra-hepáticos, ou seja, há um mecanismo imuno-mediado na patogênese da hepatite C crônica.
BACKGROUND: The pathogenesis of chronic hepatitis C is still a matter of debate. CD4+ and CD8+ T lymphocytes (TL) are typically observed within the portal and periportal spaces of affected livers, but their functional role in hepatitis C progression has not been fully elucidated. METHODS: CD4+ and CD8+ TL were quantified by immunohistochemistry in portal and periportal spaces of 39 liver biopsies from patients with chronic hepatitis C. They were associated to demographic data, histological parameters, laboratory findings of patients and hepatitis C genotypes. RESULTS: There was high numbers of CD4+ and CD8+ TL from which the density of CD4+ T was higher than CD8+ TL in portal and periportal spaces. CD4+ and CD8+ TL were directly correlated to intensity of interface hepatitis. CD8+ TL correlated to serum enzyme levels. CONCLUSION: The high numbers of CD4+ and CD8+ TL in portal and periportal spaces and their correlation to interface hepatitis suggest that hepatitis C evolution depends on the action of intrahepatic T lymphocytes, lending support to the notion of an immune-mediated mechanism in the pathogenesis of chronic hepatitis C.
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6.
Reproductive biology and longevity of Euplectrus ronnai (Brèthes) (Hymenoptera: Eulophidae)
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O ectoparasitóide Euplectrus ronnai (Brèthes) é um dos componentes do complexo de espécies que parasitam a lagarta do trigo Mythimna (Pseudaletia) sequax Franclemont (Lepidoptera: Noctuidae). Não há dados na literatura sobre o potencial de parasitismo, preferência por ínstares do hospedeiro e longevidade desse parasitóide, o que motivou a realização do presente trabalho. O parasitismo ocorreu entre o terceiro e o quinto ínstares do hospedeiro; lagartas de segundo instar inviabilizaram o desenvolvimento do parasitóide, e no primeiro e no sexto ínstares não houve oviposição pelas fêmeas de E. ronnai. O número de ovos depositados pelas fêmeas aumentou com o estádio de desenvolvimento do hospedeiro, variando de 1,5 ovos/lagarta no terceiro instar a 3,6 ovos/lagarta no quinto ínstar. A proporção de lagartas parasitadas entre os diferentes ínstares mostrou que E. ronnai apresenta preferência pelo quarto e quinto ínstares de M. sequax. Não houve diferença no tempo de desenvolvimento, na razão sexual, no número médio de lagartas parasitadas e na porcentagem de lagartas parasitadas em testes de livre escolha entre lagartas de quarto e de quinto ínstares. Entretanto, o número de parasitóides/hospedeiro foi significativamente maior em lagartas de quinto ínstar. A fecundidade média das fêmeas de E. ronnai foi de 63,7 ovos e cada fêmea parasitou a média de 20,3 lagartas. A oviposição iniciou-se um dia após a emergência e manteve-se até um dia antes da morte das fêmeas. A longevidade de fêmeas em atividade de oviposição (29,7 dias) foi significativamente menor do que a de fêmeas que não receberam hospedeiros (187,5 dias).
The larval ectoparasitoid Euplectrus ronnai (Brèthes) is one of the components of a species complex that attacks the armyworm Mythimna (Pseudaletia) sequax Franclemont (Lepidoptera: Noctuidae). No data are available on the fecundity, longevity and host instar preference of E. ronnai, what prompted the conduction of this research. No parasitism occurred on the first and sixth instars of the host, and a positive relationship was found between host instar and the number of parasitoid eggs/host, which ranged from 1.5 on third- instar hosts to 3.6 on fifth instars. Females of E. ronnai showed a preference for either the fourth or fifth instar of M. sequax. There were no significant differences in the developmental time of the parasitoid, sex ratio, mean number of parasitized hosts and percentage of parasitized caterpillars in free-choice tests using fourth- and fifth-instar M. sequax. However significantly more parasitoids/host were found on fifth than on fourth-instar caterpillars. Mean lifetime fecundity was 63.7 eggs/female and each female parasitized an average of 20.3 caterpillars. Oviposition started one day after emergence of the females, which remained reproductively active until one day before death. Females of E. ronnai lived significantly longer when deprived of hosts (187.5 days) in comparison to females kept in ovipositional activity throughout their lifetime (29.7 days).
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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 |