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| Registros recuperados: 10 | |
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| Bonifácio da Silva,M.E.; Marin,J.M.. |
| Day care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Haemophilus influenzae was identified in 38 day care attendees age 6 to 37 months, and 23 staff members, at a day care center in Ribeirão Preto-São Paulo, in 1997. To identify the carriers, two nasopharyngeal swabs were collected; one in July and one in December. The rate of H. influenzae carriers among the children was 77%. Only 2 of 23 staff members (9%) had Hi. Among the children, there were 58 isolates in the two sampling periods; 6 of the Hi were serotype b,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Haemophilus influenzae; Day care; Colonization. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000500004 |
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| Machado,T.R.O.; Correa,M.G.; Marin,J.M.. |
| Um total de 109 cepas de Staphylococci coagulase-negativa foi isolado de leite de vacas com mastite clínica e subclínica, em 35 fazendas, situadas em nove estados brasileiros, no período de fevereiro a maio de 2005. Os isolados foram investigados em relação a susceptibilidade in vitro a diversos agentes antimicrobianos. A resistência à penicilina foi a observação mais freqüente (93,5%), seguida por sulfonamida (88,9%), novobiocina (88,6%) e ampicilina (85,3%). Todas as cepas examinadas mostraram resistência a pelo menos uma das drogas antimicrobianas testadas. Cepas apresentando resistência múltipla foram extremamente comuns, com 10,0% dos microrganismos isolados apresentando resistência a todas as drogas antimicrobianas. Os resultados obtidos indicaram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coagulase-negative Staphylococci; Antimicrobial resistance; Bovine mastitis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000100041 |
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| Gonçalves,V.P.; Marin,J.M.. |
| To determine the fate of Shiga toxigenic Escherichia coli (STEC) non-O 157 in composted manure from naturally colonized cattle, fresh manure was obtained from three cows carrying non-O157 STEC strains possessing the stx2 gene. Two composting systems were used: a 0.6m deep cave opened in the soil and an one meter high solid manure heap in a pyramidal architecture. Every day, for the 10 first days, and every five days for a month, one manure sample from three different points in both systems was collected and cultured to determine the presence of E. coli and the presence of the stx 2 gene in the cells. The temperature was verified at each sampling. STEC non-O157 E. coli cells survived for 8, 25 and 30 days at 42, 40 and 38ºC, respectively, in the deep cave... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial reduction; Manure; STEC; Environment; Composting system. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000400001 |
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| Marin,J.M.; Maluta,R.P.; Borges,C.A.; Beraldo,L.G.; Maesta,S.A.; Lemos,M.V.F.; Ruiz,U.S.; Ávila,F.A.; Rigobelo,E.C.. |
| Livestock manure may contain pathogenic microorganisms which pose a risk to the health of animal or humans if the manure is not adequately treated or disposed of. To determine the fate of Shiga toxigenic Escherichia coli (STEC) non O157 in composted manure from naturally colonized sheep, fresh manure was obtained from animals carrying bacterial cells with stx1/ stx2 genes. Two composting systems were used, aerated and non-aerated, and the experiments were done in Dracena city, São Paulo State. Every week, for seven weeks, one manure sample from six different points in both systems was collected and cultured to determine the presence of E. coli, the presence of the virulence genes in the cells, and also the susceptibility to 10 antimicrobial drugs. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial elimination; VTEC; Environment; Compost; Virulence gene. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000601771 |
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| Sartori,L.C.A.; Santos,R.C.; Marin,J.M.. |
| A mastite representa um dos problemas mais sérios que afetam as fazendas de gado leiteiro. As mastites clínica e subclínica em bovinos, devido a leveduras, são causadas principalmente por espécies do gênero Candida. O objetivo deste trabalho foi identificar quais espécies dessa levedura estavam presentes em amostras de leite obtidas da glândula mamária de vacas apresentando mastite. Um total de 428 amostras de leite foi coletado nos estados de São Paulo, Paraná, Santa Catarina e Rio Grande do Sul. A identificação foi realizada por meio de critérios fenotípicos e fisiológicos. Foi possível isolar seis espécies de Candida em 55 (12,8%) das amostras. As espécies mais frequentes foram C. krusei(34,6%), C. parapsilosis(25,4%), C. tropicalis (18,2%) e C.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cow; Bovine mastitis; Milk; Yeast; Candida. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501615 |
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| Resende,D.; Santo,E.; Macedo,C.; Marin,J.M.. |
| The prevalence of virulence genes expressing fimbriae, production of hemolysin, colicin and aerobactin, was determined in Escherichia coli isolates from healthy cows genital tract not showing clinical signs of infection. The presence of fimbriae expression genes (pap, sfa, afa) was assayed using specific primers in a polymerase chain reaction; none were detected in any of the isolates. Yet, a prevalence of 90.4%, 69.8%, and 28.5% of virulence factors for colicin, hemolysin and aerobactin respectively, was detected in the isolates. Analysis of the bacterial pathogenicity of isolates from the bovine genital tract may contribute towards the understanding of E. coli behavior. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cow; Escherichia coli; Genital tract; Virulence factors. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000300003 |
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| Rigobelo,E.C.; Gamez,H.J.; Marin,J.M.; Macedo,C.; Ambrosin,J.A.; Ávila,F.A.. |
| One hundred seventy-three Escherichia coli strains isolated from calves from northwestern São Paulo State, having diarrhea were examined for the production of thermolabile (LT) and thermostable (ST) enterotoxins and for the presence of virulence factors associated with bovine colibacillosis. Eighty-five (49.1%) of the E.coli strains produced toxins; 53 isolates were detected as producing STa toxin, and 9 also produced LT toxin. By PCR, 23 isolates were shown to harbor only the LT-II gene. Nine (5.2%) isolates harbored Shiga toxin genes: four carried the stx2 gene, four the stx1 gene and one carried both. Three of the isolates showing stx1 also carried the eae gene. Among the E. coli isolates examined for susceptibility to 10 antimicrobial agents,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Diarrhea; Escherichia coli; Virulence factor; Antimicrobial agent. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000300003 |
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| Caliman,M.W.; Marin,J.M.. |
| Determinadas linhagens de Escherichia coli comportam-se como patógenos em gatos, causando doenças gastrointestinais e extraintestinais. Neste estudo, foram utilizadas 205 cepas de E. coli isoladas de amostras de fezes provenientes de 19 gatos diarreicos e de 21 gatos não diarreicos, e três amostras de urina provenientes de gatos com infecção do trato urinário (ITU). Essas cepas foram testadas pela técnica de reação em cadeia da polimerase com múltiplos iniciadores para a detecção da presença de genes codificadores de adesinas (pap, sfa e afa), assim como para a detecção dos genes produtores da toxina Shiga-like (stx1 e stx2) e do gene da intimina (eae). Oitenta e dois isolados possuíam genes codificadores de adesinas, dos quais 11 apresentaram o gene pap,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Pet; Cat; ExPEC; STEC; Adhesins; Virulence gene. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000401287 |
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| Registros recuperados: 10 | |
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