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| Oliveira,M.; Guerra,M.; Bernardo,F.. |
| Avaliou-se a qualidade microbiológica da silagem produzida em Portugal e otimizaram-se alguns aspectos relacionados com a eficácia de detecção de Listeria monocytogenes mediante protocolo baseado na técnica de hibridação in situ fluorescente (FISH) para detecção directa desse microrganismo em amostras de silagens. O protocolo foi aplicado a 74 amostras, em simultâneo com o método bacteriológico convencional. Este último permitiu a detecção de L. monocytogenes em 11 silos (15%). Por meio do protocolo FISH, observou-se que 22 silos (29,7%) se encontravam contaminados. O método FISH apresentou precisão (77,0%), especificidade (92,5%) e sensibilidade (72,7%) elevadas, sendo adequado para a análise microbiológica presuntiva de silagens, uma vez que é um método... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Silage; Listeriosis; Fluorescent in situ hybridization; Listeria monocytogenes; Portugal. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000100038 |
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| Vieira-Pinto,M.; Oliveira,M.; Bernardo,F.; Martins,C.. |
| This study reports the use of the fluorescent in situ hybridization (FISH) with Sal3 probe for Salmonella detection in swine carcasses inner surface (swab); and in the correspondent samples of ileum, ileocolic, and mandibular lymph nodes; and tonsils, after dilution (1:10) in buffered peptone water and a pre-enrichment step (37(0)C, 18h). In order to evaluate the efficiency of FISH, 235 naturally contaminated samples were simultaneously tested by the cultural method (ISO 6579) and by the Vitek Immuno Diagnostic Assay System (VIDAS®) - Salmonella (SLM) system. The cultural method identified 39 positive samples. From these, VIDAS®- SLM only detected 23. FISH identified 115 positive samples. This difference was highly significant (P<0.001). From positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Salmonella; FISH; ELFA. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600006 |
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| Fagundes,F.H.R.; Oliveira,M.; Huancahuire-Vega,S.; Romero-Vargas,F.F.; Ponce-Soto,L.A.; Marangoni,S.. |
| To illustrate the construction of precursor complementary DNAs, we isolated mRNAs from whole venom samples. After reverse transcription polymerase chain reaction (RT-PCR), we amplified the cDNA coding for a neurotoxic protein, phospholipase A2 D49 (PLA2 D49), from the venom of Crotalus durissus collilineatus (Cdc PLA2). The cDNA encoding Cdc PLA2 from whole venom was sequenced. The deduced amino acid sequence of this cDNA has high overall sequence identity with the group II PLA2 protein family. Cdc PLA2 has 14 cysteine residues capable of forming seven disulfide bonds that characterize this group of PLA2 enzymes. Cdc PLA2 was isolated using conventional Sephadex G75 column chromatography and reverse-phase high performance liquid chromatography (RP-HPLC).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cdc PLA2; CDNA; Chick biventer cervicis; Crotalus durissus collilineatus; Mass spectrometry MALDI-TOF; Neurotoxic agents. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000300007 |
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