Resultados: 70
#1
au:PEREIRA, PAULA S.
Filtros
Ordenar por
Página
de 5
Próxima
1.
Vertebral osteomyelitis caused by Enterococcus faecalis in broiler chickens from southern Brazil
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Menck-Costa, Maísa F.
; Huijboom, Julian A.A.
; Souza, Marielen de
; Justino, Larissa
; Costa, Arthur R. da
; Bracarense, Ana Paula F.R.L.
; Pereira, Ulisses P.
; Baptista, Ana Angelita S.
.
ABSTRACT: Enterococcal spondylitis affects poultry and causes progressive lameness. This study reports what seems to be the first case of vertebral osteomyelitis caused by Enterococcus in broiler chickens in southern Brazil. We also conducted an experimental infection to evaluate microorganismal characteristics and pathogenicity in broiler chickens. We performed bacterial isolation, identification, and histopathology. The isolates were tested for their growth and survival capacity at different temperatures, pH values, and antimicrobial resistance profiles. The experiment infection was conducted with broiler breeders (n=9). Group 1 = negative control, Group 2 = challenged orally, Group 3 = challenged via air sac. The autopsy was performed on the 50th day of life (DOL). The report showed spondylitis and fusion of thoracic vertebra, accompanied by spinal cord compression, and femoral head necrosis. We used the isolates (n=17) to test their growth at 10°C and 45°C, survival capacity for up to 60° for 30 min, and growth under pH levels from four to 12. Higher resistance was observed against macrolides and quinolones. On experimental infections, all animals expressed signs of lameness and “sitting on the hocks”. Enterococcus faecalis is the causal agent of enterococcal spondylitis in broilers in southern Brazil, which is an underreported and emerging pathological condition that requires attention. ABSTRACT Brazil isolation identification histopathology temperatures values profiles n=9. n9 n n=9 . 9 (n=9) control orally sac th DOL. DOL (DOL) vertebra compression necrosis n=17 n17 17 (n=17 10C C 10 45C 45 45°C 60 min 12 quinolones infections sitting hocks. hocks hocks” attention n= (n=9 (DOL n=1 n1 (n=1 4 6 (n= (n
RESUMO: A espondilite enterocócica afeta aves e causa claudicação progressiva. Este estudo relata o primeiro caso de osteomielite vertebral causada por Enterococcus em frangos de corte no sul do Brasil. Também conduzimos uma infecção experimental para avaliar as características microbianas e a patogenicidade em frangos de corte. Realizamos isolamento bacteriano, identificação e histopatologia. Os isolados foram testados quanto ao seu crescimento e capacidade de sobrevivência em diferentes temperaturas, valores de pH e perfil de resistência antimicrobiana. O experimento de infecção foi conduzido com matrizes de corte (n=9). Grupo 1 = controle negativo, Grupo 2 = provocado oralmente, Grupo 3 = provocado via saco aéreo. A autópsia foi realizada no 50º dia de vida (DOL). O laudo mostrou espondilite e fusão de vértebra torácica, acompanhada de compressão da medula espinhal e necrose da cabeça do fêmur. Usamos os isolados (n=17) para testar seu crescimento a 10°C e 45°C, capacidade de sobrevivência até 60° por 30 min e crescimento em níveis de pH de quatro a 12. A maior resistência foi observada contra macrolídeos e quinolonas. Na infecção experimental, todos os animais manifestaram sinais de claudicação e postura sentada sobre os jarretes. Enterococcus faecalis é o agente causal da espondilite enterocócica em frangos de corte no sul do Brasil, que é uma condição patológica emergente e subnotificada que requer atenção. RESUMO progressiva Brasil bacteriano histopatologia temperaturas antimicrobiana n=9. n9 n n=9 . 9 (n=9) negativo oralmente aéreo º DOL. DOL (DOL) torácica fêmur n=17 n17 17 (n=17 10C C 10 45C 45 45°C 60 12 quinolonas jarretes atenção n= (n=9 (DOL n=1 n1 (n=1 4 6 (n= (n
2.
Hepatic endotheliitis in Golden Syrian hamsters (Mesocricetus auratus) experimentally infected with SARS-CoV-2 Mesocricetus auratus SARSCoV2 SARSCoV SARS CoV 2 SARS-CoV- SARS-CoV
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Souza, Alex Junior Souza de
; Souza Filho, Antônio Francisco de
; Zimpel, Cristina Kraemer
; Ayupe, Marina Caçador
; Araújo, Marcelo Valdemir de
; Machado, Rafael Rahal Guaragna
; Salles, Erika
; Salgado, Caio Loureiro
; Tavares, Mariana Silva
; Silva-Pereira, Taiana Tainá
; Souza, Paula Carolina de
; Durigon, Edison Luiz
; Heinemann, Marcos Bryan
; Brandão, Paulo Eduardo
; Fonseca, Denise Morais da
; Guimarães, Ana Marcia de Sá
; Sá, Lilian Rose Marques de
.
Revista do Instituto de Medicina Tropical de São Paulo
- Métricas do periódico
ABSTRACT Hepatic injuries in COVID-19 are not yet fully understood and indirect pathways (without viral replication in the liver) have been associated with the activation of vascular mechanisms of liver injury in humans infected with SARS-CoV-2. Golden Syrian hamsters are an effective model for experimental reproduction of moderate and self-limiting lung disease during SARS-CoV-2 infection. As observed in humans, this experimental model reproduces lesions of bronchointerstitial pneumonia and pulmonary vascular lesions, including endotheliitis (attachment of lymphoid cells to the luminal surface of endothelium). Extrapulmonary vascular lesions are well documented in COVID-19, but such extrapulmonary vascular lesions have not yet been described in the Golden Syrian hamster model of SARS-CoV-2 infection. The study aimed to evaluate microscopic liver lesions in Golden Syrian hamsters experimentally infected with SARS-CoV-2. In total, 38 conventional Golden Syrian hamsters, divided into infected group (n=24) and mock-infected group (n=14), were euthanized at 2-, 3-, 4-, 5-, 7-, 14-, and 15-days post infection with SARS-CoV-2. Liver fragments were evaluated by histopathology and immunohistochemical detection of SARS-CoV-2 Spike S2 antigens. The frequencies of portal vein endotheliitis, lobular activity, hepatocellular degeneration, and lobular vascular changes were higher among SARS-CoV-2-infected animals. Spike S2 antigen was not detected in liver. The main results indicate that SARS-CoV-2 infection exacerbated vascular and inflammatory lesions in the liver of hamsters with pre-existing hepatitis of unknown origin. A potential application of this animal model in studies of the pathogenesis and evolution of liver lesions associated with SARS-CoV-2 infection still needs further evaluation. COVID19 COVID 19 COVID-1 without SARSCoV2. SARSCoV2 SARSCoV SARS CoV 2. 2 selflimiting self limiting SARS-CoV- attachment endothelium. endothelium . endothelium) COVID19, 19, total 3 n=24 n24 n 24 (n=24 mockinfected mock n=14, n14 n=14 , 14 (n=14) 2, 2- 3, 3- 4, 4 4- 5, 5 5- 7, 7 7- 14, 14- 15days days 15 S antigens activity degeneration SARSCoV2infected SARSCoVinfected animals preexisting pre existing origin evaluation COVID1 1 COVID- SARS-CoV n=2 n2 (n=2 n1 n=1 (n=14 n= (n= (n=1 (n
3.
Catálogo Taxonômico da Fauna do Brasil: Setting the baseline knowledge on the animal diversity in Brazil Brasil
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Boeger, Walter A.
; Valim, Michel P.
; Zaher, Hussam
; Rafael, José A.
; Forzza, Rafaela C.
; Percequillo, Alexandre R.
; Serejo, Cristiana S.
; Garraffoni, André R.S.
; Santos, Adalberto J.
; Slipinski, Adam
; Linzmeier, Adelita M.
; Calor, Adolfo R.
; Garda, Adrian A.
; Kury, Adriano B.
; Fernandes, Agatha C.S.
; Agudo-Padrón, Aisur I.
; Akama, Alberto
; Silva Neto, Alberto M. da
; Burbano, Alejandro L.
; Menezes, Aleksandra
; Pereira-Colavite, Alessandre
; Anichtchenko, Alexander
; Lees, Alexander C.
; Bezerra, Alexandra M.R.
; Domahovski, Alexandre C.
; Pimenta, Alexandre D.
; Aleixo, Alexandre L.P.
; Marceniuk, Alexandre P.
; Paula, Alexandre S. de
; Somavilla, Alexandre
; Specht, Alexandre
; Camargo, Alexssandro
; Newton, Alfred F.
; Silva, Aline A.S. da
; Santos, Aline B. dos
; Tassi, Aline D.
; Aragão, Allan C.
; Santos, Allan P.M.
; Migotto, Alvaro E.
; Mendes, Amanda C.
; Cunha, Amanda
; Chagas Júnior, Amazonas
; Sousa, Ana A.T. de
; Pavan, Ana C.
; Almeida, Ana C.S.
; Peronti, Ana L.B.G.
; Henriques-Oliveira, Ana L.
; Prudente, Ana L.
; Tourinho, Ana L.
; Pes, Ana M.O.
; Carmignotto, Ana P.
; Wengrat, Ana P.G. da Silva
; Dornellas, Ana P.S.
; Molin, Anamaria Dal
; Puker, Anderson
; Morandini, André C.
; Ferreira, André da S.
; Martins, André L.
; Esteves, André M.
; Fernandes, André S.
; Roza, André S.
; Köhler, Andreas
; Paladini, Andressa
; Andrade, Andrey J. de
; Pinto, Ângelo P.
; Salles, Anna C. de A.
; Gondim, Anne I.
; Amaral, Antonia C.Z.
; Rondón, Antonio A.A.
; Brescovit, Antonio
; Lofego, Antônio C.
; Marques, Antonio C.
; Macedo, Antonio
; Andriolo, Artur
; Henriques, Augusto L.
; Ferreira Júnior, Augusto L.
; Lima, Aurino F. de
; Barros, Ávyla R. de A.
; Brito, Ayrton do R.
; Romera, Bárbara L.V.
; Vasconcelos, Beatriz M.C. de
; Frable, Benjamin W.
; Santos, Bernardo F.
; Ferraz, Bernardo R.
; Rosa, Brunno B.
; Sampaio, Brunno H.L.
; Bellini, Bruno C.
; Clarkson, Bruno
; Oliveira, Bruno G. de
; Corrêa, Caio C.D.
; Martins, Caleb C.
; Castro-Guedes, Camila F. de
; Souto, Camilla
; Bicho, Carla de L.
; Cunha, Carlo M.
; Barboza, Carlos A. de M.
; Lucena, Carlos A.S. de
; Barreto, Carlos
; Santana, Carlos D.C.M. de
; Agne, Carlos E.Q.
; Mielke, Carlos G.C.
; Caetano, Carlos H.S.
; Flechtmann, Carlos H.W.
; Lamas, Carlos J.E.
; Rocha, Carlos
; Mascarenhas, Carolina S.
; Margaría, Cecilia B.
; Waichert, Cecilia
; Digiani, Celina
; Haddad, Célio F.B.
; Azevedo, Celso O.
; Benetti, Cesar J.
; Santos, Charles M.D. dos
; Bartlett, Charles R.
; Bonvicino, Cibele
; Ribeiro-Costa, Cibele S.
; Santos, Cinthya S.G.
; Justino, Cíntia E.L.
; Canedo, Clarissa
; Bonecker, Claudia C.
; Santos, Cláudia P.
; Carvalho, Claudio J.B. de
; Gonçalves, Clayton C.
; Galvão, Cleber
; Costa, Cleide
; Oliveira, Cléo D.C. de
; Schwertner, Cristiano F.
; Andrade, Cristiano L.
; Pereira, Cristiano M.
; Sampaio, Cristiano
; Dias, Cristina de O.
; Lucena, Daercio A. de A.
; Manfio, Daiara
; Amorim, Dalton de S.
; Queiroz, Dalva L. de
; Queiroz, Dalva L. de
; Colpani, Daniara
; Abbate, Daniel
; Aquino, Daniel A.
; Burckhardt, Daniel
; Cavallari, Daniel C.
; Prado, Daniel de C. Schelesky
; Praciano, Daniel L.
; Basílio, Daniel S.
; Bená, Daniela de C.
; Toledo, Daniela G.P. de
; Takiya, Daniela M.
; Fernandes, Daniell R.R.
; Ament, Danilo C.
; Cordeiro, Danilo P.
; Silva, Darliane E.
; Pollock, Darren A.
; Muniz, David B.
; Gibson, David I.
; Nogueira, David S.
; Marques, Dayse W.A.
; Lucatelli, Débora
; Garcia, Deivys M.A.
; Baêta, Délio
; Ferreira, Denise N.M.
; Rueda-Ramírez, Diana
; Fachin, Diego A.
; Souza, Diego de S.
; Rodrigues, Diego F.
; Pádua, Diego G. de
; Barbosa, Diego N.
; Dolibaina, Diego R.
; Amaral, Diogo C.
; Chandler, Donald S.
; Maccagnan, Douglas H.B.
; Caron, Edilson
; Carvalho, Edrielly
; Adriano, Edson A.
; Abreu Júnior, Edson F. de
; Pereira, Edson H.L.
; Viegas, Eduarda F.G.
; Carneiro, Eduardo
; Colley, Eduardo
; Eizirik, Eduardo
; Santos, Eduardo F. dos
; Shimbori, Eduardo M.
; Suárez-Morales, Eduardo
; Arruda, Eliane P. de
; Chiquito, Elisandra A.
; Lima, Élison F.B.
; Castro, Elizeu B. de
; Orlandin, Elton
; Nascimento, Elynton A. do
; Razzolini, Emanuel
; Gama, Emanuel R.R.
; Araujo, Enilma M. de
; Nishiyama, Eric Y.
; Spiessberger, Erich L.
; Santos, Érika C.L. dos
; Contreras, Eugenia F.
; Galati, Eunice A.B.
; Oliveira Junior, Evaldo C. de
; Gallardo, Fabiana
; Hernandes, Fabio A.
; Lansac-Tôha, Fábio A.
; Pitombo, Fabio B.
; Dario, Fabio Di
; Santos, Fábio L. dos
; Mauro, Fabio
; Nascimento, Fabio O. do
; Olmos, Fabio
; Amaral, Fabio R.
; Schunck, Fabio
; Godoi, Fábio S. P. de
; Machado, Fabrizio M.
; Barbo, Fausto E.
; Agrain, Federico A.
; Ribeiro, Felipe B.
; Moreira, Felipe F.F.
; Barbosa, Felipe F.
; Silva, Fenanda S.
; Cavalcanti, Fernanda F.
; Straube, Fernando C.
; Carbayo, Fernando
; Carvalho Filho, Fernando
; Zanella, Fernando C.V.
; Jacinavicius, Fernando de C.
; Farache, Fernando H.A.
; Leivas, Fernando
; Dias, Fernando M.S.
; Mantellato, Fernando
; Vaz-de-Mello, Fernando Z.
; Gudin, Filipe M.
; Albuquerque, Flávio
; Molina, Flavio B.
; Passos, Flávio D.
; Shockley, Floyd W.
; Pinheiro, Francielly F.
; Mello, Francisco de A.G. de
; Nascimento, Francisco E. de L.
; Franco, Francisco L.
; Oliveira, Francisco L. de
; Melo, Francisco T. de V.
; Quijano, Freddy R.B.
; Salles, Frederico F.
; Biffi, Gabriel
; Queiroz, Gabriel C.
; Bizarro, Gabriel L.
; Hrycyna, Gabriela
; Leviski, Gabriela
; Powell, Gareth S.
; Santos, Geane B. dos
; Morse, Geoffrey E.
; Brown, George
; Mattox, George M.T.
; Zimbrão, Geraldo
; Carvalho, Gervásio S.
; Miranda, Gil F.G.
; Moraes, Gilberto J. de
; Lourido, Gilcélia M.
; Neves, Gilmar P.
; Moreira, Gilson R.P.
; Montingelli, Giovanna G.
; Maurício, Giovanni N.
; Marconato, Gláucia
; Lopez, Guilherme E.L.
; Silva, Guilherme L. da
; Muricy, Guilherme
; Brito, Guilherme R.R.
; Garbino, Guilherme S.T.
; Flores, Gustavo E.
; Graciolli, Gustavo
; Libardi, Gustavo S.
; Proctor, Heather C.
; Gil-Santana, Helcio R.
; Varella, Henrique R.
; Escalona, Hermes E.
; Schmitz, Hermes J.
; Rodrigues, Higor D.D.
; Galvão Filho, Hilton de C.
; Quintino, Hingrid Y.S.
; Pinto, Hudson A.
; Rainho, Hugo L.
; Miyahira, Igor C.
; Gonçalves, Igor de S.
; Martins, Inês X.
; Cardoso, Irene A.
; Oliveira, Ismael B. de
; Franz, Ismael
; Fernandes, Itanna O.
; Golfetti, Ivan F.
; S. Campos-Filho, Ivanklin
; Oliveira, Ivo de S.
; Delabie, Jacques H.C.
; Oliveira, Jader de
; Prando, Jadila S.
; Patton, James L.
; Bitencourt, Jamille de A.
; Silva, Janaina M.
; Santos, Jandir C.
; Arruda, Janine O.
; Valderrama, Jefferson S.
; Dalapicolla, Jeronymo
; Oliveira, Jéssica P.
; Hájek, Jiri
; Morselli, João P.
; Narita, João P.
; Martin, João P.I.
; Grazia, Jocélia
; McHugh, Joe
; Cherem, Jorge J.
; Farias Júnior, José A.S.
; Fernandes, Jose A.M.
; Pacheco, José F.
; Birindelli, José L.O.
; Rezende, José M.
; Avendaño, Jose M.
; Duarte, José M. Barbanti
; Ribeiro, José R. Inácio
; Mermudes, José R.M.
; Pujol-Luz, José R.
; Santos, Josenilson R. dos
; Câmara, Josenir T.
; Teixeira, Joyce A.
; Prado, Joyce R. do
; Botero, Juan P.
; Almeida, Julia C.
; Kohler, Julia
; Gonçalves, Julia P.
; Beneti, Julia S.
; Donahue, Julian P.
; Alvim, Juliana
; Almeida, Juliana C.
; Segadilha, Juliana L.
; Wingert, Juliana M.
; Barbosa, Julianna F.
; Ferrer, Juliano
; Santos, Juliano F. dos
; Kuabara, Kamila M.D.
; Nascimento, Karine B.
; Schoeninger, Karine
; Campião, Karla M.
; Soares, Karla
; Zilch, Kássia
; Barão, Kim R.
; Teixeira, Larissa
; Sousa, Laura D. do N.M. de
; Dumas, Leandro L.
; Vieira, Leandro M.
; Azevedo, Leonardo H.G.
; Carvalho, Leonardo S.
; Souza, Leonardo S. de
; Rocha, Leonardo S.G.
; Bernardi, Leopoldo F.O.
; Vieira, Letícia M.
; Johann, Liana
; Salvatierra, Lidianne
; Oliveira, Livia de M.
; Loureiro, Lourdes M.A. El-moor
; Barreto, Luana B.
; Barros, Luana M.
; Lecci, Lucas
; Camargos, Lucas M. de
; Lima, Lucas R.C.
; Almeida, Lucia M.
; Martins, Luciana R.
; Marinoni, Luciane
; Moura, Luciano de A.
; Lima, Luciano
; Naka, Luciano N.
; Miranda, Lucília S.
; Salik, Lucy M.
; Bezerra, Luis E.A.
; Silveira, Luis F.
; Campos, Luiz A.
; Castro, Luiz A.S. de
; Pinho, Luiz C.
; Silveira, Luiz F.L.
; Iniesta, Luiz F.M.
; Tencatt, Luiz F.C.
; Simone, Luiz R.L.
; Malabarba, Luiz R.
; Cruz, Luiza S. da
; Sekerka, Lukas
; Barros, Lurdiana D.
; Santos, Luziany Q.
; Skoracki, Maciej
; Correia, Maira A.
; Uchoa, Manoel A.
; Andrade, Manuella F.G.
; Hermes, Marcel G.
; Miranda, Marcel S.
; Araújo, Marcel S. de
; Monné, Marcela L.
; Labruna, Marcelo B.
; Santis, Marcelo D. de
; Duarte, Marcelo
; Knoff, Marcelo
; Nogueira, Marcelo
; Britto, Marcelo R. de
; Melo, Marcelo R.S. de
; Carvalho, Marcelo R. de
; Tavares, Marcelo T.
; Kitahara, Marcelo V.
; Justo, Marcia C.N.
; Botelho, Marcia J.C.
; Couri, Márcia S.
; Borges-Martins, Márcio
; Felix, Márcio
; Oliveira, Marcio L. de
; Bologna, Marco A.
; Gottschalk, Marco S.
; Tavares, Marcos D.S.
; Lhano, Marcos G.
; Bevilaqua, Marcus
; Santos, Marcus T.T.
; Domingues, Marcus V.
; Sallum, Maria A.M.
; Digiani, María C.
; Santarém, Maria C.A.
; Nascimento, Maria C. do
; Becerril, María de los A.M.
; Santos, Maria E.A. dos
; Passos, Maria I. da S. dos
; Felippe-Bauer, Maria L.
; Cherman, Mariana A.
; Terossi, Mariana
; Bartz, Marie L.C.
; Barbosa, Marina F. de C.
; Loeb, Marina V.
; Cohn-Haft, Mario
; Cupello, Mario
; Martins, Marlúcia B.
; Christofersen, Martin L.
; Bento, Matheus
; Rocha, Matheus dos S.
; Martins, Maurício L.
; Segura, Melissa O.
; Cardenas, Melissa Q.
; Duarte, Mércia E.
; Ivie, Michael A.
; Mincarone, Michael M.
; Borges, Michela
; Monné, Miguel A.
; Casagrande, Mirna M.
; Fernandez, Monica A.
; Piovesan, Mônica
; Menezes, Naércio A.
; Benaim, Natalia P.
; Reategui, Natália S.
; Pedro, Natan C.
; Pecly, Nathalia H.
; Ferreira Júnior, Nelson
; Silva Júnior, Nelson J. da
; Perioto, Nelson W.
; Hamada, Neusa
; Degallier, Nicolas
; Chao, Ning L.
; Ferla, Noeli J.
; Mielke, Olaf H.H.
; Evangelista, Olivia
; Shibatta, Oscar A.
; Oliveira, Otto M.P.
; Albornoz, Pablo C.L.
; Dellapé, Pablo M.
; Gonçalves, Pablo R.
; Shimabukuro, Paloma H.F.
; Grossi, Paschoal
; Rodrigues, Patrícia E. da S.
; Lima, Patricia O.V.
; Velazco, Paul
; Santos, Paula B. dos
; Araújo, Paula B.
; Silva, Paula K.R.
; Riccardi, Paula R.
; Garcia, Paulo C. de A.
; Passos, Paulo G.H.
; Corgosinho, Paulo H.C.
; Lucinda, Paulo
; Costa, Paulo M.S.
; Alves, Paulo P.
; Roth, Paulo R. de O.
; Coelho, Paulo R.S.
; Duarte, Paulo R.M.
; Carvalho, Pedro F. de
; Gnaspini, Pedro
; Souza-Dias, Pedro G.B.
; Linardi, Pedro M.
; Bartholomay, Pedro R.
; Demite, Peterson R.
; Bulirsch, Petr
; Boll, Piter K.
; Pereira, Rachel M.M.
; Silva, Rafael A.P.F.
; Moura, Rafael B. de
; Boldrini, Rafael
; Silva, Rafaela A. da
; Falaschi, Rafaela L.
; Cordeiro, Ralf T.S.
; Mello, Ramon J.C.L.
; Singer, Randal A.
; Querino, Ranyse B.
; Heleodoro, Raphael A.
; Castilho, Raphael de C.
; Constantino, Reginaldo
; Guedes, Reinaldo C.
; Carrenho, Renan
; Gomes, Renata S.
; Gregorin, Renato
; Machado, Renato J.P.
; Bérnils, Renato S.
; Capellari, Renato S.
; Silva, Ricardo B.
; Kawada, Ricardo
; Dias, Ricardo M.
; Siewert, Ricardo
; Brugnera, Ricaro
; Leschen, Richard A.B.
; Constantin, Robert
; Robbins, Robert
; Pinto, Roberta R.
; Reis, Roberto E. dos
; Ramos, Robson T. da C.
; Cavichioli, Rodney R.
; Barros, Rodolfo C. de
; Caires, Rodrigo A.
; Salvador, Rodrigo B.
; Marques, Rodrigo C.
; Araújo, Rodrigo C.
; Araujo, Rodrigo de O.
; Dios, Rodrigo de V.P.
; Johnsson, Rodrigo
; Feitosa, Rodrigo M.
; Hutchings, Roger W.
; Lara, Rogéria I.R.
; Rossi, Rogério V.
; Gerstmeier, Roland
; Ochoa, Ronald
; Hutchings, Rosa S.G.
; Ale-Rocha, Rosaly
; Rocha, Rosana M. da
; Tidon, Rosana
; Brito, Rosangela
; Pellens, Roseli
; Santos, Sabrina R. dos
; Santos, Sandra D. dos
; Paiva, Sandra V.
; Santos, Sandro
; Oliveira, Sarah S. de
; Costa, Sávio C.
; Gardner, Scott L.
; Leal, Sebastián A. Muñoz
; Aloquio, Sergio
; Bonecker, Sergio L.C.
; Bueno, Sergio L. de S.
; Almeida, Sérgio M. de
; Stampar, Sérgio N.
; Andena, Sérgio R.
; Posso, Sergio R.
; Lima, Sheila P.
; Gadelha, Sian de S.
; Thiengo, Silvana C.
; Cohen, Simone C.
; Brandão, Simone N.
; Rosa, Simone P.
; Ribeiro, Síria L.B.
; Letana, Sócrates D.
; Santos, Sonia B. dos
; Andrade, Sonia C.S.
; Dávila, Stephane
; Vaz, Stéphanie
; Peck, Stewart B.
; Christo, Susete W.
; Cunha, Suzan B.Z.
; Gomes, Suzete R.
; Duarte, Tácio
; Madeira-Ott, Taís
; Marques, Taísa
; Roell, Talita
; Lima, Tarcilla C. de
; Sepulveda, Tatiana A.
; Maria, Tatiana F.
; Ruschel, Tatiana P.
; Rodrigues, Thaiana
; Marinho, Thais A.
; Almeida, Thaís M. de
; Miranda, Thaís P.
; Freitas, Thales R.O.
; Pereira, Thalles P.L.
; Zacca, Thamara
; Pacheco, Thaynara L.
; Martins, Thiago F.
; Alvarenga, Thiago M.
; Carvalho, Thiago R. de
; Polizei, Thiago T.S.
; McElrath, Thomas C.
; Henry, Thomas
; Pikart, Tiago G.
; Porto, Tiago J.
; Krolow, Tiago K.
; Carvalho, Tiago P.
; Lotufo, Tito M. da C.
; Caramaschi, Ulisses
; Pinheiro, Ulisses dos S.
; Pardiñas, Ulyses F.J.
; Maia, Valéria C.
; Tavares, Valeria
; Costa, Valmir A.
; Amaral, Vanessa S. do
; Silva, Vera C.
; Wolff, Vera R. dos S.
; Slobodian, Verônica
; Silva, Vinícius B. da
; Espíndola, Vinicius C.
; Costa-Silva, Vinicius da
; Bertaco, Vinicius de A.
; Padula, Vinícius
; Ferreira, Vinicius S.
; Silva, Vitor C.P. da
; Piacentini, Vítor de Q.
; Sandoval-Gómez, Vivian E.
; Trevine, Vivian
; Sousa, Viviane R.
; Sant’Anna, Vivianne B. de
; Mathis, Wayne N.
; Souza, Wesley de O.
; Colombo, Wesley D.
; Tomaszewska, Wioletta
; Wosiacki, Wolmar B.
; Ovando, Ximena M.C.
; Leite, Yuri L.R.
.
ABSTRACT The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others. publications problem uptodate up date classifications context exception (CTFB http//fauna.jbrj.gov.br/, httpfaunajbrjgovbr http //fauna.jbrj.gov.br/ , jbrj gov br (http://fauna.jbrj.gov.br/) 2015 Brazil 80 specialists 1 2024 133691 133 691 133,69 125138 125 138 125,13 82.3%, 823 82 3 (82.3% 102000 102 000 102,00 7.69%, 769 7 69 (7.69% 11000 11 11,00 . 3,567 3567 567 (3,56 2,292 2292 2 292 (2,29 1,833 1833 833 (1,83 1,447 1447 447 (1,44 1000 1,00 831 (83 628 (62 606 (60 520 (52 50 users science health biology law anthropology education others http//fauna.jbrj.gov.br/ faunajbrjgovbr //fauna.jbrj.gov.br (http://fauna.jbrj.gov.br/ 201 8 202 13369 13 133,6 12513 12 125,1 82.3% (82.3 10200 10 00 102,0 7.69% 76 6 (7.69 1100 11,0 3,56 356 56 (3,5 2,29 229 29 (2,2 1,83 183 83 (1,8 1,44 144 44 (1,4 100 1,0 (8 62 (6 60 52 (5 5 http//fauna.jbrj.gov.br (http://fauna.jbrj.gov.br 20 1336 133, 1251 125, 82.3 (82. 1020 0 102, 7.69 (7.6 110 11, 3,5 35 (3, 2,2 22 (2, 1,8 18 (1, 1,4 14 4 ( 82. (82 7.6 (7. 3, (3 2, (2 (1 7. (7
4.
Amazonian Fruit Mari-Mari (Cassia leiandra Benth.): Identification of Flavonoids and Antioxidant, Antimicrobial and Antiproliferative Properties MariMari Mari Cassia Benth. Benth Benth.) Antioxidant
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Souza, Mayane P. de
; Sá, Ingrity Suelen C.
; Freitas, Flávio Augusto de
; Souza, Afonso D. L. de
; Nunomura, Sergio M.
; Muniz, Magno P.
; Pereira, Ana Paula R.
; Augusto, Bianca O.
; Gomes, Giovana B.
; Perdomo, Renata T.
; Macedo, Maria Lígia R.
; Weber, Simone S.
; Nunomura, Rita de Cassia S.
.
Journal of the Brazilian Chemical Society
- Métricas do periódico
Mari-mari (Cassia leiandra Benth.) is an Amazonian native fruit that is highly appreciated in the northern region of Brazil, but there are few studies regarding its chemical composition and/or biological properties. A phytochemical study was conducted on the extracts of the pulp, peel and seeds; and their antioxidant, cytotoxic and antimicrobial potential were also determined. Methanol and acetone extracts from different fruit parts were subjected to total phenolic, 2,2-diphenyl-1 picrylhydrazyl (DPPH) radical scavenging and FeIII reducing capacity (FRAP) assays. From the peel extracts, the engeletin and astilbin could also be isolated and characterized based on nuclear magnetic resonance spectroscopy and high-resolution mass spectrometry. A quantification using ultra-fast liquid chromatography of acetone dry crude extracts (DCE) of the peel showed that engeletin was the main compound (532.77 mg g-1 DCE). Astilbin content was also determined (131.53 mg g-1 DCE). The antibacterial and antiproliferative activities were evaluated and the methanol extract of the peel showed higher growth inhibition activity against all tested bacteria. Engeletin showed a relevant antimicrobial effect against Staphylococcus aureus, Staphylococcus epidermidis and Escherichia coli. Acetone and methanol peel extracts exhibited a relevant inhibitory effect on the proliferation of breast carcinoma cells (MCF-7), with no toxicity to the normal cell line (NIH/3T3). Marimari Mari mari Cassia Benth. Benth Brazil andor or properties pulp seeds antioxidant phenolic 2,2diphenyl1 22diphenyl1 diphenyl 2,2 1 2 2,2-diphenyl- DPPH (DPPH FRAP (FRAP assays highresolution high resolution spectrometry ultrafast ultra fast DCE (DCE 532.77 53277 532 77 (532.7 g1 g g- DCE. . DCE) 131.53 13153 131 53 (131.5 bacteria aureus coli MCF7, MCF7 MCF 7 , (MCF-7) NIH/3T3. NIH3T3 NIHT NIH/3T3 NIH 3T3 T (NIH/3T3) 2diphenyl1 2,2diphenyl 22diphenyl 22 2, 2,2-diphenyl 532.7 5327 (532. 131.5 1315 13 5 (131. (MCF-7 NIH3T NIH/3T 3T (NIH/3T3 2diphenyl 532. (532 131. (131 (MCF- (NIH/3T (53 (13 (MCF (5 (1 (
5.
Biogenic and physicogenic aggregates as indicators of quality in soils with sandy texture in areas of organic agriculture
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Silva, Tiago Paula da
; Morais, Igor de Sousa
; Santos, Gilsonley Lopes dos
; Zonta, Everaldo
; Pinto, Luiz Alberto da Silva Rodrigues
; Fagundes, Hugo de Souza
; Pereira, Marcos Gervasio
.
ABSTRACT Sandy texture soils have a great expression in agricultural areas worldwide. In the Baixada Fluminense, soils with a sandy texture on the surface horizons are striking, and a good part of these areas is destined for producing vegetables using conventional cultivation methods. The sandy texture is one of the great challenges for agriculture due to the low water retention capacity provided to the soil, the rapid decomposition of organic matter, and the intense loss of nutrients by leaching. In these areas, the action of erosive processes is sometimes observed, whether water or wind erosion. The practices carried out in conventional agriculture can accentuate these processes. This study aimed to evaluate the influence of different soil management systems, with different vegetation covers, on the pathways of aggregate formation, the nutrient contents contained therein, and the organic matter fractions, with the objective of using these properties as indicators of soil quality. The study was carried out in an organic production unit, with no-till system (NT) and conventional system (CT), three vegetal covers were evaluated, namely; seed cocktail 1 (C1) (Crotalaria (Crotalaria juncea) (20 kg ha-1), Jack Bean (Canavalia ensiformis) (150 kg ha-1) and millet (Pennisetum glaucum) (60 kg ha-1)), and seed cocktail 2 (C2) (with 50 % of the amount of seeds used in C1), and spontaneous plants (S. P). Undisturbed samples were collected at the layers of 0.00-0.05 and 0.05-0.10 m, and, from these samples, aggregates with a diameter between 9.7 and 8.0 mm were classified according to the formation route (Biogenic or Physicogenic). From these, the chemical properties were quantified (pH, Ca2+, Mg2+, Al3+, P, Na+, K+), and also the carbon fractions (total organic carbon – TOC, mineral-associated organic carbon – MAOC), particulate organic carbon – POC, and free light fraction carbon – LFC). Based on the results, it was verified that the percentage of biogenic aggregates was higher than the physicogenic one in the layer of 0.00-0.05 m, not being verified influences of the vegetal coverage or the management system. Chemical properties did not differ significantly between training pathways. The CT, for the most part, was the system in which the highest values of chemical properties were observed, and in general, the C2 and S.P coatings were the ones that provided the greatest improvements for chemical properties and carbon content. worldwide Fluminense striking methods leaching observed erosion systems therein quality unit notill no till NT (NT CT , (CT) evaluated namely C1 C (C1 Crotalaria juncea 20 (2 ha1, ha1 ha Canavalia ensiformis 150 (15 ha-1 Pennisetum glaucum 60 (6 ha-1)) (C2 5 C1, C1) S. S (S P. P . P) 0.000.05 000005 0.00 0.05 0 00 05 0.00-0.0 0.050.10 005010 0.10 10 0.05-0.1 m 97 9 7 9. 80 8 8. Biogenic Physicogenic. Physicogenic Physicogenic) pH, pH (pH Ca2 Ca Ca2+ Mg2 Mg Mg2+ Al3 Al Al3+ Na Na+ K+, K K+ K+) total TOC mineralassociated mineral associated MAOC, MAOC MAOC) POC LFC. LFC LFC) results general SP content (CT (C ( 15 (1 ha- 6 000 0.000.0 00000 0.0 005 0.00-0. 050 0.050.1 00501 010 0.1 0.05-0. 0.000. 0000 0. 0.00-0 0.050. 0050 01 0.05-0 0.000 0.00- 0.050 0.05-
6.
Aerosol optical properties over the South Atlantic and southern ocean during the 2010-2012 summer seasons as part of the global maritime aerosol network 20102012 2010 2012 2010-201 2010201 201 2010-20 201020 20 2010-2 20102 2 2010-
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
PEREIRA, PAULA S.
; SANTOS, ELAINE A. DOS
; EVANGELISTA, HEITOR
; MAGALHAES, NEWTON
; SMIRNOV, ALEXANDER
.
Anais da Academia Brasileira de Ciências
- Métricas do periódico
Abstract Aerosols have implications to climate and biogeochemical cycles in the global oceans. At sites under indirect influence of dust emitted by the Patagonian semi-desert, a debate exists on the potential fertilization effects of iron enriched aerossol. Considering this subject we conducted measurements of aerosols optical properties using a Microtops II sun photometer to access aerosol size distributions and other intrinsic properties oversea from Atlantic Southern mid-latitudes to Antarctica. Oceanographic cruises were developed between December 2010 to April 2011 and October 2011 to April 2012, in the context of the Brazilian Antarctic Program, and between November 2011 to December 2011. This survey was taken as part of the Global Maritime Aerosol Network (MAN/NASA). Our data of AOD (500 nm) along the South American coast depicts a steady decrease southwards following the decreased latitudinal continental extent. However, the influence of the aerosols blown from Patagonia semi-desert region was clear from latitude 53⁰S to 64⁰S. The predominance of aerosol fine mode was observed in Central Atlantic and close to the Drake Passage. An unexpected aerosol coarse mode predominance was found close to the Antarctic Peninsula. We attribute that to a possible weathering of rock outcrops due to the strong westerly winds in that region. oceans semidesert, semidesert semi desert, desert aerossol midlatitudes mid latitudes Antarctica 201 2012 Program MAN/NASA. MANNASA MAN/NASA . MAN NASA (MAN/NASA) 500 (50 nm extent However S 64⁰S Passage Peninsula 20 (MAN/NASA 50 (5 2 5 (
7.
Desenvolvimento de um purificador de ar com radiação UVC e filtro HEPA no contexto de COVID-19
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Zhang, Julio Min Fei
; Andrade, Alyssa El Chihimi de
; Machado, Felipe Augusto Moraes
; Ghilardi, Larissa Bornia
; Almeida, Barbara Medeiros
; Falararo, Beatriz Vilas Boas Pugliese
; Machado, Gustavo Alves
; Emygdio, Ana Paula Mendes
; Pereira, Guilherme Martins
; Magalhães, Daniel Varela
; Forner-Cordero, Arturo
; Vasconcellos, Pérola de Castro
.
RESUMO A transmissão de infecções respiratórias tem importante impacto na saúde humana, sobretudo no atual contexto da pandemia de COVID-19. Neste trabalho, discute-se um purificador de ar que utiliza radiação ultravioleta-C (UVC) e filtro high efficiency particulate air (HEPA) como mecanismos para descontaminar ambientes internos com baixa circulação de ar. Para avaliar os parâmetros físico-químicos do equipamento e sua ação microbicida, foram determinados a irradiância produzida pela lâmpada, a vazão na entrada e saída do dispositivo, as alterações na concentração de ozônio e o potencial de descontaminação do equipamento para Staphylococcus aureus, Escherichia coli e Candida albicans. A dose total de radiação UVC que o ar recebe ao passar pelo equipamento foi de 801,4 μJ cm-2, o que representaria a inativação de até 80% de Sars-CoV-2 no ar. Além disso, a eficiência de filtração foi reduzida para cerca de 60% com a diminuição do tamanho da partícula para partículas com menos de 1 μm e manteve-se acima de 90% para MP2,5 e MP10. Nos testes microbiológicos, observou-se redução de 99,4, 99,9 e 99,5% para S. aureus, E. coli e C. albicans, respectivamente, em 11 minutos.
ABSTRACT The transmission of respiratory infections has an important role on human health, especially in the current context of the COVID-19 pandemic. In this work, we present the assessment of an air purifier that uses ultraviolet-C (UVC) radiation and a “High Efficiency Particulate Air” (HEPA) filter as mechanisms to decontaminate indoor environments with low air circulation. To assess the physicochemical and microbicidal characteristics of the equipment, the irradiance produced by the lamp, the flow rate at the entrance and exit of the device, possible changes in the ozone concentration and the equipment's decontamination potential for Staphylococcus aureus, Escherichia coli and Candida albicans. The total dose of UVC radiation that the air receives when passing through the equipment was 801.4 μJ cm-2, which would represent an inactivation of up to 80% of SARS-CoV-2 in the air. Furthermore, the filtration efficiency dropped with smaller particle diameter, and reduced to around 60% for particles with less than 1 μm and remained above 90% for PM2.5 and PM10. In microbiological tests, there was a reduction of 99.4%, 99.9% and 99.5% for S aureus, E. coli and C. albicans, respectively, in 11 minutes.
8.
Influence of shadowing in Sequoia sempervirens (D. Don) Endl. mini-stumps and mini-cuttings
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Navroski, Marcio Carlos
; Schicora, Liliane
; Pereira, Mariane de Oliveira
; Silva, Jaiton Jaime das Neves
; Duarte, Luís Fernando Chaves
; Schilisting, Thalia
.
ABSTRACT The aim of the work was to analyze the influence of variables such as shading, temperature and humidity in the production and rooting of mini-cuttings of Sequoia sempervirens (D. Dom) Endl. in a clonal mini-garden. The experiment was conducted at the Forest Nursery at the University of Santa Catarina State - CAV/UDESC, Lages - SC. The minicuttings were obtained by vegetative rescue of a single clone (A228). The original S. sempervirens individuals studied are located in the National Forest of São Francisco de Paula -RS (FLONA). Sprouts were collected 90 days after the application of girdling rescue techniques. Subsequently, mini-stumps were obtained, which were submitted to three different treatments: T1 - Mini-stumps without shading protection, T2 - Mini-stumps with single layer of shading and T3 - Mini-stumps with double layer of shading. There was no significant difference for humidity and temperature in relation to the production of mini-cuttings by the mini-stumps, while for shading the treatments T2 and T3 showed greater efficiency. It is possible that the shading treatments on S. sempervirens mini-stumps allows the vegetative tissue to be more juvenile, obtaining excellent results in cutting.
9.
Effective recommendations towards healthy routines to preserve mental health during the COVID-19 pandemic
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Pilz, Luísa K.
; Couto Pereira, Natividade S.
; Francisco, Ana Paula
; Carissimi, Alicia
; Constantino, Débora B.
; Caus, Letícia B.
; Abreu, Ana Carolina O.
; Amando, Guilherme R.
; Bonatto, Fernanda S.
; Carvalho, Paula V.V.
; Cipolla-Neto, José
; Harb, Ana
; Lazzarotto, Gabriela
; Marafiga, Joseane Righes
; Minuzzi, Luciano
; Montagner, Francisco
; Nishino, Fernanda A.
; Oliveira, Melissa A.B.
; dos Santos, Bruno G.T.
; Steibel, Eduardo G.
; Tavares, Patrice S.
; Tonon, André C.
; Xavier, Nicóli B.
; Zanona, Querusche Klippel
; Amaral, Fernanda G.
; Calcagnotto, Maria Elisa
; Frey, Benicio N.
; Hidalgo, Maria Paz
; Idiart, Marco
; Russomano, Thais
.
Objective: To assess the adherence to a set of evidence-based recommendations to support mental health during the coronavirus disease 2019 (COVID-19) pandemic and its association with depressive and anxiety symptoms. Methods: A team of health workers and researchers prepared the recommendations, formatted into three volumes (1: COVID-19 prevention; 2: Healthy habits; 3: Biological clock and sleep). Participants were randomized to receive only Volume 1 (control), Volumes 1 and 2, Volumes 1 and 3, or all volumes. We used a convenience sample of Portuguese-speaking participants over age 18 years. An online survey consisting of sociodemographic and behavioral questionnaires and mental health instruments (Patient Health Questionnaire-9 [PHQ-9] and Generalized Anxiety Disorder-7 [GAD-7]) was administered. At 14 and 28 days later, participants were invited to complete follow-up surveys, which also included questions regarding adherence to the recommendations. A total of 409 participants completed the study – mostly young adult women holding university degrees. Results: The set of recommendations contained in Volumes 2 and 3 was effective in protecting mental health, as suggested by significant associations of adherence with PHQ-9 and GAD-7 scores (reflecting anxiety and depression symptoms, respectively). Conclusion: The recommendations developed in this study could be useful to prevent negative mental health effects in the context of the pandemic and beyond.
10.
Seroconversion in asymptomatic COVID-19 pediatric patients with rheumatic diseases of one tertiary referral hospital
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Simon, Juliana R.
; Pereira, Maria F.B.
; Marques, Heloisa H.
; Elias, Adriana M.
; Sakita, Neusa K.
; Ferreira, Juliana C.O.A.
; Precioso, Alexander Roberto
; Grisi, Sandra J.F.E.
; Ferrer, Ana Paula S.
; Bain, Vera
; Silva, Clovis A.
; Campos, Lúcia M.A.
.
Abstract Objectives: To evaluate seroconverted asymptomatic COVID-19 in pediatric Autoimmune Rheumatic Diseases (ARDs) patients and to identify the risk factors related to contagion. Methods: A cross-sectional study was conducted in March 2021, before vaccination of children and adolescents in Brazil, including 77 pediatric ARDs patients, followed at a tertiary hospital and 45 healthy controls, all of them without a previous diagnosis of COVID-19. Data was obtained by a questionnaire with demographic data, symptoms compatible with COVID-19 over the previous year, and contact with people with confirmed COVID-19. Patient’s medical records were reviewed to access data regarding disease and current medications. A qualitative immunochromatographic SARS-CoV-2 test was performed on all participants. Results: Patients and controls were similar in terms of female gender (70.1% vs. 57.8%, p = 0.173), age (14 vs. 13 years, p = 0.269) and SARS-CoV-2 positive serology (22% vs. 15.5%, p = 0.481). 80.5% of rheumatic patients were in use of immunosuppressive drugs: 27.3% of them used corticosteroids (33.3% in high doses), and 7.8% on immunobiologicals. No statistical differences were found between positive (n = 17) and negative serology (n = 60) patients regarding demographic/socioeconomic data, contact with people with confirmed COVID-19, use and number of immunosuppressive drugs, use and dose of corticosteroids, use of hydroxychloroquine and immunobiological drugs (p > 0.05). Conclusions: Pediatric rheumatic disease patients were infected at the same rate as healthy ones. Neither the underlying pathology nor its immunosuppressive treatment seemed to interfere with contagion risk.
11.
Clinical and pathological aspects of an outbreak of Streptococcus suis serotype 9 infection in pigs
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Hammerschmitt, Márcia E.
; Schwertz, Claiton I.
; Lopes, Bruna C.
; Pereira, Paula R.
; Frandoloso, Rafael
; Driemeier, David
.
RESUMO: Streptococcus suis é um patógeno Gram positivo que habita o trato respiratório superior e pode causar doença inflamatória sistêmica grave em suínos, principalmente durante a fase de creche. Streptococcus suis é um patógeno reemergente e surtos representam perdas econômicas significativas a suinocultura mundial. Neste estudo descrevemos os aspectos clínicos, patológicos e moleculares de um surto de infecção por S. suis com mortalidade atipicamente alta. O surto ocorreu em creches integradas a uma cooperativa do estado do Paraná, Brasil. Das 30 creches, 10 foram severamente afetadas pelo patógeno e apresentavam elevadas perdas econômicas. Os sinais clínicos iniciavam em torno de 10 dias após o desmame e eram caracterizados principalmente por sinais clínicos nervosos e locomotores agudos. A mortalidade dos lotes afetados variava entre 8% e 10%, mas em alguns casos ultrapassava 18%. Nove leitões foram submetidos ao exame post mortem. Macroscopicamente, as articulações sinoviais estavam aumentadas e continham exsudato fibrinoso. No sistema nervoso central havia hiperemia dos vasos leptomeníngeos associada a deposição de fibrina e exsudato purulento nas leptomeninges. Em três leitões havia espessamento do plexo coroide associado a dilatação dos ventrículos laterais. As lesões microscópicas eram caracterizadas principalmente por inflamação fibrinossupurativa que envolvia as membranas sinoviais, as leptomeninges do cérebro e medula espinhal. Além disso, também afetava o plexo coroide, epêndima, raízes nervosas e canal central da medula espinhal. S. suis foi isolado do líquido cefalorraquidiano, suabe de meninge e/ou líquido sinovial de 8/9 leitões e tipificado como sorotipo 9 por PCR multiplex.
ABSTRACT: Streptococcus suis is a Gram-positive pathogen that inhabits the upper respiratory tract and can cause severe systemic inflammatory disease in pigs, mainly during the nursery phase. Streptococcus suis is a reemergent pathogen, and outbreaks of its inducing disease represent significant economic losses for the pig industry worldwide. In this study, we described the clinical, pathological, and molecular aspects of an outbreak of S. suis infection with atypically high mortality. The outbreak occurred in nursery farms integrated into a cooperative in the state of Paraná, Brazil. Of the 30 nurseries, 10 were severely affected by the pathogen and had high economic losses. Clinical signs usually started approximately 10 days after weaning and were mainly characterized by acute nervous and locomotor disorders. The mortality of the affected batches usually ranged between 8% and 10%, but in some cases, it reached 18%. Nine piglets were submitted to post mortem examination. Macroscopically, the synovial joints were enlarged and contained fibrinous exudates. In the central nervous system, there was hyperemia of the leptomeningeal vessels associated with deposition of fibrin and purulent exudate in the leptomeninges. In three piglets, there was thickening of the choroid plexus associated with dilation of the lateral ventricles. Microscopic lesions were characterized mainly by fibrinosuppurative inflammation, which involved the synovial membranes, leptomeninges of the brain, and spinal cord. Furthermore, it also affects the choroid plexus, ependyma, nerve roots, and central canal of the spinal cord. S. suis was isolated from the cerebrospinal fluid, meningeal swabs, and/or synovial fluid of 8/9 piglets, and typified as serotype 9 by multiplex PCR.
12.
Prevalence and diagnostic accuracy of microcephaly in a pediatric cohort in Brazil: a retrospective cross-sectional study
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Bertozzi, Ana Paula Antunes Pascalicchio
; Gazeta, Rosa Estela
; Fajardo, Thamirys Cosmo Gillo
; Moron, Antonio Fernandes
; Soriano-Arandes, Antoni
; Alarcon, Ana
; Garcia-Alix, Alfredo
; Silva, Alify Bertoldo da
; Florence Filho, Nemésio
; Sarmento, Stephanno Gomes Pereira
; Witkin, Steven S.
; Passos, Saulo Duarte
.
Abstract Objective We sought to describe the prevalence of microcephaly and to compare the different cutoff points established by the Brazilian Ministry of Health at various times during a Zika virus epidemic. As a secondary aim, we investigated the possible etiology of the microcephaly. Method This retrospective study utilized newborn participants in the Zika Cohort Study Jundiaí. Newborns from the Zika Cohort Study Jundiaí with an accurate gestational age determination and complete anthropometric data were analyzed, and microcephaly was diagnosed according to the INTERGROWTH-21st curve. At delivery, fluids were tested for specific antibodies and for viruses. Brain images were evaluated for microcephaly. Receiver Operating Characteristic curves were plotted to define the accuracy of different cutoff points for microcephaly diagnosis. Results Of 462 eligible newborns, 19 (4.1%) were positive for microcephaly. Cutoff points corresponding to the curves of the World Health Organization yielded the best sensitivity and specificity. Three of the microcephaly cases (15.8%) were positive for Zika virus infections; nine (47.4%) had intrauterine growth restriction; one had intrauterine growth restriction and was exposed to Zika virus; three had a genetic syndrome (15.8%); and three had causes that had not been determined (15.8%). Conclusions Microcephaly prevalence was 4.1% in this study. Cutoff values determined by the World Health Organization had the highest sensitivity and specificity in relation to the standard IG curve. The main reason for microcephaly was intrauterine growth restriction. All possible causes of microcephaly must be investigated to allow the best development of an affected baby.
https://doi.org/10.1016/j.jped.2020.08.010
56 downloads
13.
Trypanocidal Activity and Increased Solubility of Benznidazole Incorporated in PEG 4000 and Its Derivatives
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Sousa, Lucas R. D.
; Azevedo, Maria Luíza S.
; Rocha, Dayana F.
; Andrade, Ângela L.
; Amparo, Tatiane R.
; Santos, Orlando D. H. dos
; Seibert, Janaína B.
; Pereira, Luciano R.
; Vieira, Paula M. A.
; Carneiro, Cláudia M.
; Barboza, Ana Paula M.
; Neves, Bernardo R. A.
; Sales Jr., Policarpo A.
; Murta, Silvane M. F.
; Novack, Kátia M.
; Santos, Viviane M. R. dos
.
Journal of the Brazilian Chemical Society
- Métricas do periódico
Selecting a polymer depends on its characteristics, the properties of the drug and of the remaining ingredients in the formulation. The drug, when incorporated into a polymeric matrix, can show several advantages when compared with its conventional form. In this context, this work describes the preparation and characterization of polyethylene glycol (PEG 4000) and its derivative particles loaded with benznidazole, as well as evaluates their trypanocidal activity. In this work, reactions to modify the PEG 4000 polymer and the subsequent incorporation of the benznidazole were made. The nuclear magnetic resonance (NMR) analysis confirmed the efficiency in modifying the PEG chains. The morphology of polymeric films was observed by atomic force microscopy (AFM) and showed considerable changes on the film organization. The acetylation of PEG favored the stability of the system and an increase in the zeta potential from ?14.83 to ?25.54 mV was observed. Although encapsulation efficiency values between 30.14 and 39.48% were found, the enhanced benznidazole dissolution profile by microparticles enables the use of lower drug concentrations. This fact can be proven by the increased trypanocidal effect of benznidazole when encapsulated in BP3 microparticles. Finally, the high selectivity of the formulations for trypanocidal action guarantees their safety as an alternative for the treatment of the Chagas disease.
https://doi.org/10.21577/0103-5053.20210017
96 downloads
14.
The testing for COVID-19 in symptomatic patients as a protective factor against stress, anxiety, and depression
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
Santos, Alan Chaves dos
; Tenorio, Paula Jaeger
; Barbosa, Elias Almeida S.
; Souza, Gustavo Fonseca de Albuquerque
; Souza, Gabriela Albuquerque
; Praciano, Gabriella de Almeida Figueredo
; Maranhão, Laura Brito Barreto
; Costa, Gabriela Oliveira Lobo Pereira da
; Souza, Alex Sandro Rolland
.
Revista Brasileira de Saúde Materno Infantil
- Métricas do periódico
Resumo Objetivos: determinar a frequência de sintomas de estresse, ansiedade e depressão em pacientes sintomáticos para COVID-19 e avaliar os fatores associados. Métodos: entre maio / junho de 2020, foi realizado um estudo transversal prospectivo com participantes sintomáticos para COVID-19 (n = 300). Foi aplicado um questionário online e o DASS-21 para avaliar a saúde mental dos participantes. Resultados: observou-se que 28,6%, 29,7% e 27% dos participantes apresentaram sintomas graves/extremos para estresse, ansiedade e depressão, respectivamente. A realização do teste para a COVID-19 constituiu-se como fator de proteção para o desenvolvimento de sintomatologia psíquica, uma vez que mostrou associação significativa nas baixas frequências de depressão grave/extrema [odds ratio (OR)]= 0,26; p=0,002) e de estresse (OR=0,39; p=0,01). Conclusão: os indivíduos sintomáticos para COVID-19 constituem um grupo vulnerável que podem apresentar elevada sintomatologia para depressão, ansiedade e estresse. A identificação da frequência de morbidade psiquiátrica e seus fatores associados podem contribuir para o desenvolvimento de estratégias de saúde mental visando a prevenção e mitigação do impacto psicológico na população sintomática de COVID-19 durante a pandemia.
Abstract Objectives: to determine the frequency of stress, anxiety, and depression symptoms in symptomatic patients for COVID-19. To evaluate the associated factors involved in these variants. Methods: between May/June of 2020, it was conducted a prospective cross-section study with symptomatic participants for COVID-19 (n=300). It was applied an online questionnaire and the DASS-21 to evaluate the mental health of participants. Results: it was observed that 28.6%, 29.7% and 27% of the participants showed severe/extreme levels symptoms of stress, anxiety, and depression, respectively. The testing for COVID-19 application had constituted a protective factor for the development of psychiatric morbidity, once it had shown significant association in the low frequencies of severe/extreme depression [Odds Ratio (OR)]= 0.26; p=0.002) and stress (OR=0.39; p=0.01). Conclusion: individuals that are symptomatic for COVID-19 are a vulnerable group that may present high symptomatology for depression, anxiety, and stress. The identification of psychiatric morbidity frequency and its associated factors may contribute for the development of mental health strategies aiming at the prevention and mitigation of psychological impact in COVID-19 symptomatic population during the pandemic.
https://doi.org/10.1590/1806-9304202100s100007
1498 downloads
15.
The Brazilian octocoral Phyllogorgia dilatata as a source of cytotoxic compounds
Facebook Twitter
Facebook Twitter
- Outras redes sociais
- Google+
- StambleUpon
- CiteULike
- Mendeley
- Outras redes
- Métricas
FAGUNDES, THAYSSA S.F.
; MACEDO, ARTHUR L.
; RIGATO, DHIEGO B.
; AMARAL, BRUNO S. DO
; JIMENEZ, PAULA CHRISTINE
; COSTA-LOTUFO, LETÍCIA V.
; PEREIRA, RENATA F.A.
; AGUIAR-ALVES, FÁBIO
; SOARES, ANGÉLICA R.
; VASCONCELOS, THATYANA R.A.
; CASS, QUEZIA B.
; VALVERDE, ALESSANDRA L.
.
Anais da Academia Brasileira de Ciências
- Métricas do periódico
Abstract The extensive marine biodiversity has proved to be a promising source of substances with biomedical potential. In this study, the cytotoxicity of the Brazilian octocoral Phyllogorgia dilatata (Gorgoniidae) was evaluated against two tumor cell lines and three bacterial strains. The methanol/dichloromethane crude extract presented no antibacterial activity up to the highest concentration tested (512 µg/mL), however it revealed a noteworthy antiproliferative effect against HCT-116 (80%) and MCF-7 (54%) cell lines at 50 μg/mL. Therefore, guided by the cytotoxic activity, a multistep chemical fractionation of the extract provided the subfraction 5 (PDPH2-5) with IC50 values of 3.18 and 17.80 μg/mL against HCT-116 and MCF-7, respectively. The LC-HRMS/MS analysis of PDPH2-5 showed ions of m/z 219.1742 and 219.1743, characterized as (E,E) and (Z,E) germacrone, after a LC-DAD-SPE/NMR analysis of the hexanic fraction and comparisons of NMR data with the literature. Previously reported assessments to the cytotoxic activity of the (E,E)-diastereoisomer disclosed higher IC50 values than that obtained for the PDPH2-5 fraction, suggesting, herein, a potentiated effect of the diastereoisomeric mixture. Such remark encourage further bioactivity studies with stereoisomer mixtures and reduce the urge for compound isolation.
https://doi.org/10.1590/0001-3765202120200686
65 downloads
Exibindo
itens por página
Página
de 5
Próxima
Visualizar estatísticas de
Enviar resultado
Exportar resultados
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 |