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	Provedor de dados BJM (6) Ciência Rural (3) Braz. J. Vet. Res. Anim. Sci. (1) Ciência e Agrotecnologia (1) Autor Corrêa,Benedito (11) Dilkin,Paulo (2) Gambale,Walderez (2) Paula,Claudete Rodrigues (2) Pires,Maria de Fátima Costa (2) Reis,Tatiana Alves dos (2) Almeida,Adriana P. (1) Aquino,Simone (1) Arcaro Júnior,Irineu (1) Arcaro,Juliana Rodrigues Pozzi (1) Badiale-Furlong,Eliana (1) Cavalcanti,Josemara Neves (1) Durigon,Edison Luiz (1) Fagundes,Helena (1) Faria,Maria Jacinta de (1) Felicio,Joana D'arc (1) Ferreira,Fabiane (1) Fonseca,Homero (1) Franco,Bernadette D.G.M. (1) Gonçalez,Edlayne (1) Mais... Palavra-chave Aspergillus flavus (5) Fumonisinas (3) Adherence (1) Aflatoxin (1) Aflatoxinas (1) Aflatoxins (1) Amendoim (1) Arachis hypogaea L (1) Candida albicans (1) Corn (1) Dermatophytosis (1) Double-stranded RNA (1) Edema pulmonar suíno (1) F.verticillioides (Sacc.) Nirenb. (1) FB1 (1) Fluorescent viability test (1) Fumonisin (1) Fumonisins (1) Fusarium (1) Fusarium moniliforme (1) Mais... Tipo do documento Info:eu-repo/semantics/article (10) Info:eu-repo/semantics/other (1) Ano 2015 (1) 2008 (1) 2005 (1) 2004 (2) 2002 (2) 2001 (2) 2000 (2) Mais... País Brazil (11) Idioma Inglês (8) Português (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 11 Primeira ... 1 ... Última Histopathologic and mycologic aspects of experimental infection of guinea pigs with Microsporum canis Braz. J. Vet. Res. Anim. Sci. Cavalcanti,Josemara Neves; Guerra,José Luiz; Gambale,Walderez; Corrêa,Benedito; Paula,Claudete Rodrigues. Dermatophytosis is a zoonosis in whose etiology the dermatophyte Microsporum canis is frequently involved. The fungus can be transmitted to man by dogs and cats. In the present study, guinea pigs were experimentally inoculated with M. canis and the course of the lesions was evaluated. Inoculation resulted in lesions in 100% of the animals, with a clinical course consisting of an incubation period, an inflammatory and a phase of lesion resolution. The histopathologic evaluation of the skin biopsies revealed the presence of acanthosis, hyperkeratosis, spongiosis and marked dermal edema. M. canis spores and hyphae were detected in histologic sections stained with periodic acid-Schiff. The combination of the fluorescent dyes FD and EB permitted the adequate... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dermatophytosis; Microsporum canis; Ringworm; Guinea pigs. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000500004 EXPERIMENTAL MODEL OF CANDIDA ALBICANS (SEROTYPES A AND B) ADHERENCE IN VITRO BJM Pires,Maria de Fátima Costa; Corrêa,Benedito; Gambale,Walderez; Paula,Claudete Rodrigues. The adherence of Candida albicans is considered an important virulence factor since it determines the colonization of the yeast in various regions of the host, being the initial cause of the infection. In this work we studied the adherence of C. albicans (serotypes A and B) to HeLa and Vero cells after culture for 18 h and 30 h in chemically defined medium (YNB) plus carbohydrate sources such as glucose, sucrose, maltose, galactose and mannose (500 mM). Each assay was performed in triplicate. The best results were obtained with the medium containing glucose. The adherence was greatest in 18 h cultures at 37ºC and at 1 h contact time. The interaction of yeast cells with the host cells was studied by scanning microscopy. Tipo: Info:eu-repo/semantics/article Palavras-chave: Candida albicans; Adherence; Serotypes. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000300001 Time course of virus-like particles (VLPs) double-stranded rna accumulation in toxigenic and non-toxigenic strains of Aspergillus flavus BJM Silva,Valéria N.; Durigon,Edison Luiz; Pires,Maria de Fátima Costa; Lourenço,Alexandre; Faria,Maria Jacinta de; Corrêa,Benedito. Two strains of Aspergillus flavus, non-toxigenic NRRL 6550 and toxigenic NRRL 5940, were studied over a period of 44 days, in order to detect the presence of virus-like particles (VLPs) by means of electron microscopy (EM) and nucleic acids electrophoresis. Only the toxigenic strain contained VLPs, presenting three-segmented dsRNA. An increase in VLPs number was observed during the exponential phase of fungal growth, up to day 12 of culture; after this, higher levels of aflatoxin production in toxigenic NRRL 5940 mycelia occurred in parallel with decreased VLPs replication. Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycovirus; Double-stranded RNA; Virus-like particles; Aspergillus flavus. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100013 Mycoflora and aflatoxin/fumonisin production by fungal isolates from freshly harvested corn hybrids BJM Almeida,Adriana P.; Corrêa,Benedito; Mallozzi,Marisa A. B.; Sawazaki,Eduardo; Soares,Lúcia M. Valente. The mycoflora of 3 hybrids of freshly harvested corn grains collected from three regions of the state of São Paulo, Brazil (Assis, Capão Bonito and Ribeirão Preto) was investigated. A total of 66 samples were analyzed focusing on the influence of abiotic factors (moisture content, water activity, temperature and rainfall) on both the prevalence of Aspergillus flavus and Fusarium moniliforme, and the ability of these genera isolates to produce aflatoxins and fumonisins, respectively. In the three surveyed regions, the fungal population comprised mainly Fusarium spp., Penicillium spp., Aspergillus spp. and 2 others filamentous fungal genera, which were isolated from corn kernels showing water activity of 0.30 to 0.99 and moisture content of 5.0% to 20.2%.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxins; Aspergillus flavus; Fumonisins; Fusarium moniliforme; Corn. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000400016 Production of aflatoxins by Aspergillus flavus and of fumonisins by Fusarium species isolated from Brazilian sorghum BJM Silva,Josefa B. da; Dilkin,Paulo; Fonseca,Homero; Corrêa,Benedito. Fifty-nine Aspergillus flavus and 35 Fusarium verticillioides strains, isolated from freshly harvested (10) and stored (130) Brazilian sorghum samples, were tested regarding their ability to produce aflatoxins (coconut milk agar) and fumonisins (rice culture), respectively. Aflatoxins B1 and B2 were detected by TLC, and fumonisins B1 and B2 were analyzed by HPLC. Thirty-eight (64.4%) A. flavus strains produced detectable levels of aflatoxins at concentrations ranging from 12.00 to 3282.50 µg/kg (AFB1 + AFB2), while thirty two (91%) F. verticillioides strains produced FB1 at concentrations ranging from 0.12 to 5.38 µg/g. Two F. proliferatum strains produced low fumonisin levels. The toxigenic potential of A. flavus (64.4%) and F. verticillioides (91.5%)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Toxigenicity; Aspergillus flavus; Fusarium verticillioides; Mycotoxins; Sorghum; Aflatoxin; Fumonisin. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200002 Evaluation of viability of Aspergillus flavus and aflatoxins degradation in irradiated samples of maize BJM Aquino,Simone; Ferreira,Fabiane; Ribeiro,Deise Helena Baggio; Corrêa,Benedito; Greiner,Ralf; Villavicencio,Anna Lucia Casañas Haasis. One of the currently most important fungi in stored grains is Aspergillus flavus, which produce aflatoxins. This fungus can grow on diverse substrates and represents a serious public health and animal nutritional problem. Therefore, the study of techniques that can be applied to the control of aflatoxins is of great importance. The objective of the present study was to determine the effects of gamma radiation on the growth of Aspergillus flavus Link and on degradation of aflatoxin B1 and B2 (AFB1 and AFB2) at a relative humidity of 97 99% and a water activity (Aw) of 0.88-0.94. Samples of corn grains were irradiated using a cobalt 60 source emitting gamma rays at doses of 2, 5 and 10 kGy. Irradiation was found to be effective in reducing the number... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gamma radiation; Aspergillus flavus; Fluorescent viability test; Water activity; Maize. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000400009 Editorial BJM Franco,Bernadette D.G.M.; Corrêa,Benedito. Tipo: Info:eu-repo/semantics/other Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200001 Aspectos relacionados à ocorrência e mecanismo de ação de fumonisinas Ciência Rural Pozzi,Claudia Rodrigues; Arcaro,Juliana Rodrigues Pozzi; Arcaro Júnior,Irineu; Fagundes,Helena; Corrêa,Benedito. As fumonisinas são micotoxinas produzidas por fungos do gênero Fusarium, um dos principais fitopatógenos de grãos de milho. Isoladas em 1988, a partir de amostras de milho mofado proveniente de região com alta incidência de câncer do esôfago na África, foram relacionadas à ocorrência de leucoencefalomalácia eqüina e hidrotórax e edema pulmonar suíno, e outras patologias animais. A presente revisão aborda aspectos da ocorrência natural das fumonisinas em grãos de milho, características físico-química das moléculas e efeitos toxicológicos em eqüinos, suínos, aves e bovinos, além do provável mecanismo de ação das micotoxinas. Tipo: Info:eu-repo/semantics/article Palavras-chave: Fumonisinas; F.verticillioides (Sacc.) Nirenb.. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782002000500026 Mycobiota and occurrence of Fumonisin B1 in wheat harvested in Southern Brazil Ciência Rural Mendes,Gabriela da Rocha Lemos; Reis,Tatiana Alves dos; Corrêa,Benedito; Badiale-Furlong,Eliana. Although fumonisin B1 (FB1) is a mycotoxin poorly studied in wheat, the Fusarium genus fungi have been frequently detected in this cereal, especially in subtropical regions such as southern Brazil, thus studies on their occurrence are required. This study evaluated the mycobiota, water activity and the presence of FB1 in 11 wheat cultivars grown in the northeastern and northwestern of Rio Grande do Sul. The mycobiota was identified by morphological and molecular techniques and FB1 was determined by liquid chromatography with fluorescence detection (HPLC-FL). Microbial counts lower than 103CFU were found in the samples, and the fungi genera Phoma, Cladosporium and Fusarium were the most frequent. Despite this, 54% of the samples were contaminated with FB1... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fusarium; FB1; Triticum aestivum L.. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601050 Intoxicação experimental de suínos por fumonisinas Ciência Rural Dilkin,Paulo; Hassegawa,Regina; Reis,Tatiana Alves dos; Mallmann,Carlos Augusto; Corrêa,Benedito. Os efeitos da exposição oral prolongada (28 dias) à fumonisina foram estudados em suínos jovens. Os animais foram divididos em três grupos experimentais e alimentados com ração ad libitum contendo: A) 0mg de FB1.kg-1 (controle); B) 10mg de FB1.kg-1; C) 30mg de FB1.kg-1. Os suínos foram observados duas vezes por dia; seus pesos e consumo alimentar foram registrados semanalmente. Entre o 20º e 24º dia de intoxicação, os suínos do tratamentos C apresentaram diminuição do consumo de ração e ganho de peso, sinais característicos de edema pulmonar, razão pela qual um animal foi levado a óbito aos 23 dias de intoxicação. Após 28 dias, os animais foram necropsiados e os órgãos submetidos a análises macroscópica, histopatológica e ao estudo da morfologia e... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fumonisinas; Suínos; Edema pulmonar suíno. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000100027 Avaliação da micoflora e ocorrência de micotoxinas em cascas de amendoim em diferentes estágios de maturação da vagem Ciência e Agrotecnologia Gonçalez,Edlayne; Souza,Tiago Noel de; Rossi,Maria Helena; Felicio,Joana D'arc; Corrêa,Benedito. As cascas de amendoim (Arachis hypogaea L.) são de grande importância para confecção de cama de frangos, de gado de leite e como fonte de fibras para ruminantes, portanto a elucidação dos mecanismos de contaminação por fungos toxigênicos e por micotoxinas em amendoim é imprescindível, especialmente para que medidas preventivas possam ser tomadas. Realizou-se, este trabalho, em Junqueirópolis, Estado de São Paulo, Brasil. Os principais fungos isolados nas cascas de amendoim foram Fusarium ssp. (78,75 %), Rhizopus ssp. (14,1 %) e A. flavus (11,75 %). No solo foram isolados Penicillium spp., Fusarium spp. e Aspergillus flavus, entre outros. Aflatoxinas foram detectadas em amostras de cascas de amendoim a partir do estágio de granação em concentrações que... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxinas; Ácido ciclopiazônico; Fumonisinas; Aspergillus flavus; Amendoim; Arachis hypogaea L. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000500004 Registros recuperados: 11 Primeira ... 1 ... Última

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