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| Gressler,Letícia Trevisan; Vargas,Agueda Castagna de; Costa,Mateus Matiuzzi da; Pötter,Luciana; Silveira,Bibiana Petri da; Sangioni,Luis Antônio; Botton,Sônia de Avila. |
| The req_39680 gene, associated to a putative efflux system, was detected in 60% (54/90) of R. equi isolates by PCR. The phenotypic expression of efflux mechanism was verified in 20% of the isolates using ethidium bromide. For the first time, the expression of efflux mechanism was demonstrated in R. equi. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethidium bromide; Efflux pump; Multidrug resistance; Rhodococcus equi; VapA. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200040 |
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| Gressler,Letícia Trevisan; Kirinus,Jackeline Karsten; Machado,Gustavo; Libardoni,Felipe; Vargas,Agueda Castagna de. |
| A bactéria do gênero Campylobacter está comumente envolvida em surtos de abortos ovinos em muitos países. No Brasil, até o presente momento, ainda não houve relato sobre a ocorrência de aborto em ovinos causado pelo C. fetus, subespécie fetus (C. fetus ssp. fetus). No presente trabalho, relata-se a detecção deste agente em fetos e natimortos ovinos naturalmente infectados. Desse modo, alerta-se para a possibilidade de novos casos de aborto em ovinos causados por C. fetus ssp. fetus. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Aborto; Natimorto; Campylobacter fetus subesp. fetus; Ovino; PCR. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000400020 |
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| Gressler,Letícia Trevisan; Silveira,Bibiana Petri da; Schwab,Marcelo Luís; Vargas,Agueda Castagna de; Pötter,Luciana; Botton,Sônia de Avila. |
| Rhodococcus equi infection treatment is usually a macrolide (azithromycin - AZM, clarithromycin - CLR and erythromycin - ERY) and rifampicin combination. However, resistance cases have been reported, especially for ERY. In view of the need of a study about Brazilian isolates susceptibility profile, this study aimed to characterize the minimum inhibitory concentration (MIC) of the macrolides - AZM, CLR and ERY - against 44 R. equi isolates. It was found all isolates CLR and AZM sensitive; however, for ERY, 27% (12/44) were classified as intermediate sensitivity. R. equi Brazilian isolates used here showed a large susceptibility profile, except against ERY, for which it was observed some resistance evidence. In order to avoid failures in the equine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macrolide; Minimum inhibitory concentration; Antimicrobial susceptibility; Rhodococcosis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400680 |
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| Balzan,Cláudia; Ziech,Rosangela Estel; Gressler,Letícia Trevisan; Vargas,Agueda Palmira Castagna de. |
| ABSTRACT: Bovine genital campylobacteriosis (BGC) is a venereal disease caused by Campylobacter fetus subsp. venerealis. In countries with large cattle herds, such as Brazil, where the use of natural breeding as a reproductive strategy is a common practice, BGC is considered an important cause of reproductive failure and economic losses. In these cases, the bull is the asymptomatic carrier of the bacterium and the infected females can have infertility and even abortions. The techniques for the diagnosis of C. fetus are isolation in culture medium and identification by biochemical tests, immunofluorescence, immunoenzymatic assays and molecular techniques. Disease control is based on vaccination with bacterins. This review described the epidemiology,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter fetus subsp. venerealis; Infertility; Venereal disease; Beef cattle.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300451 |
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