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| Registros recuperados: 14 | |
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| Fernández,Araceli; Paz Villanueva,María; González,Mario; Fernández,Fabiola; Latif,Fadua; Flores,Sandra Nonier; Fernández,Heriberto. |
| Edwarsiella tarda is a zoonotic bacterium that can be isolated from humans, animals and the environment. Although E. tarda is primarily considered a fish pathogen, it is the only species of its genus considered to be pathogenic for humans as well. A survey of zoonotic intestinal bacteria in fresh feces from South American sea lions (SASL) Otaria flavescens, reported E. tarda as the most frequently isolated species. In this study, we used HEp-2 cells to establish in vitro the adherence and invasive ability of 17 E. tarda strains isolated from SASL fecal material. All the strains were able to adhere and invade HEp-2 cells with adhesion and invasion percentages ranging from 56 to 100% and 21 to 74%, respectively. Despite the expression of these pathogenic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Edwarsiella tarda; Adherence; Invasion; Otaria flavescens. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300044 |
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| Gomes,Fabiane R.; Curcio,Bruna R.; Ladeira,Sílvia R.L.; Fernández,Heriberto; Meireles,Mário Carlos Araújo. |
| The aim of this study was to evaluate the occurrence of thermophilic Campylobacter species in broiler flocks from 26 small properties located near the campus of Federal University of Pelotas, RS, Brazil. A total of 404 chicken fecal samples were analyzed and after isolation, identification and biotyping was performed according to Lior´s scheme. Twenty one strains (5.2%) of Campylobacter jejuni biotype II were isolated from animals from seven properties (26.9%), with a variation from 3% to 34.6% among the positive properties. We also analyzed twelve C. jejuni isolates by polymerase chain reaction (PCR), using specific primers that generate a fragment of 402 pb. Our study allowed us to observe that chickens raised in non-industrial establishments without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter jejuni; Thermotolerant species; Diarrhea; Chicken. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300032 |
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| Tresierra-Ayala,Álvaro; Navas,Manuel; Flores,Josué; Perea,Ramsés; Huanaquiri,Juan; Bendayán,María; Fernández,Heriberto. |
| In this work 60 thermotolerant Campylobacter strains (37 C. jejuni and 23 C. coli) isolated from the cows, pigs, chickens and ducks (15 strains of each type of animal) were used to establish their growth capacity on media containing cow or swine blood as potential substitutes of sheep or horse blood. The growth capacity was assessed by viable counts on cow and swine blood media, using the modified Miles and Misra method. Campylobacter strains showed better growth in the media supplemented with pig or sheep blood than with cow blood. Thus, the use of pig blood could be a supplement for Campylobacter culture medium, when there was no availability of sheep or horse blood. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter; Culture media; Cow blood; Swine blood. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500011 |
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| Toledo,Zorayda; Simaluiza,Rosa Janneth; Fernández,Heriberto. |
| ABSTRACT: Occurrence and antimicrobial resistance profiles of Campylobacter jejuni and C. coli strains isolated from fecal samples of dogs, pigs, cows and hens in southern Ecuador were studied. Of the 250 samples studied, 84 (33.6%) were Campylobacter positive, with C. jejuni being more frequent (78.6%) than C. coli (21.4%), with the exception of porcine samples, from which C. coli was the only species isolated. Multidrug resistance was reported in 10 Campylobacter strains (11.9%), four C. jejuni and six C. coli, and was always associated with nalidixic acid and ciprofloxacin resistance. All of the amoxicillin-resistant strains were susceptible to amoxicillin-clavulanic acid and were therefore beta-lactamase producers. However, one strain of C. jejuni... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter; Reservoirs; Domestic animals; Antimicrobial resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100450 |
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| Medina,Gustavo; Otth,Carola; Otth,Laura; Fernández,Heriberto; Muñoz,Celeste; Cruz,María; Zaror,Ángela; Henriquez,Ruby; Arce,Maria; Wilson,Myra. |
| The cassette chromosome mec (SCCmec) present in methicillin-resistant Staphylococcus aureus (MRSA) has two essential components, the ccr gene complex and the mec gene complex. Additionally, SCCmec has non-essential components called J regions which are used for MRSA subtyping. This study was performed to determine subtypes MRSA strains carrying SCCmec type I based on polymorphism of regions located downstream of the mecA gene. A total of 98 MRSA strains carrying SCCmec type I isolated from patients hospitalized at the County Hospital of Valdivia (Chile) between May 2007 and May 2008, were analyzed by multiplex PCR designed to amplify the mecA gene and 7 DNA hypervariable regions located around the mecA gene. MRSA strains were classified into seventeen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Subtypified MRSA; Polymorphism MRSA; SCCmec MRSA. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300006 |
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| Otth,Laura; Solís,Gabriela; Wilson,Myra; Fernández,Heriberto. |
| The susceptibility of 50 strains of Arcobacter butzleri isolated from chicken liver [12], mussels [18], river water [6] and bovine [5], duck [2] and pelicans [7] feces to mercury (Hg), chromium (Cr), silver (Ag), nickel (Ni), cobalt (Co), iron (Fe), manganese (Mn), molybdenum (Mo) and lead (Pb) was determined.All the strains were resistant to Mo, Mn, Ni, Co, Pb and Fe and susceptible to Hg, Ag and Cr. MIC values showed high variability, indicating a non homogeneous behavior among the strains. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arcobacter butzleri; Heavy metals; Resistance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300015 |
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| Registros recuperados: 14 | |
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