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Antimicrobial susceptibility of Clostridium difficile isolated from animals and humans in Brazil Ciência Rural
Silva,Rodrigo Otávio Silveira; Oliveira Junior,Carlos Augusto; Diniz,Amanda Nádia; Alves,Guilherme Guerra; Guedes,Roberto Maurício Carvalho; Vilela,Eduardo Garcia; Lobato,Francisco Carlos Faria.
The objective of this study was to evaluate antimicrobial susceptibility in Clostridium difficile strains isolated from animals and humans in Brazil. The 54 C. difficile strains used were isolated from stool samples from piglets (n=16), dogs (n=13), humans (n=13), foals (n=8) calves (n=2), an ocelot (n=1) and a maned wolf (n=1). Antimicrobial susceptibility was determined using the serial plate agar dilution method for penicillin, florfenicol, oxytetracycline, erythromycin, vancomycin, metronidazole and tylosin. The C. difficile strains assessed were susceptible to metronidazole and vancomycin. Florfenicol resistance was rarely observed; 52 (96.4%) strains were sensitive to this antimicrobial. Five (9.3%), five (9.3%), 14 (25.9%) and 20 (37.0%) strains...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nosocomial diarrhea; Pseudomembranous colitis; Resistance.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000500013
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Prevention of Clostridium difficile infection in hamsters using a non-toxigenic strain Ciência Rural
Oliveira Júnior,Carlos Augusto de; Silva,Rodrigo Otávio Silveira; Diniz,Amanda Nádia; Pires,Prhiscylla Sadanã; Lobato,Francisco Carlos Faria; Assis,Ronie Antunes de.
ABSTRACT: The present study aimed to evaluate five non-toxigenic strains of Clostridium difficile (NTCD) in vitro and to select one strain to prevent C. difficile (CDI) infection in hamsters ( Mesocricetus auratus ). The NTCD strains were evaluated for spore production in vitro, antimicrobial susceptibility and presence of antimicrobial resistance genes. Approximately 107 spores of the selected strain (Z31) were administered by esophageal gavage in hamsters pretreated with 30mg kg-1 of clindamycin. The challenge with a toxigenic strain of C. difficile was conducted at 36 and 72h, and the animals were observed for 28 days. The NTCD strain of C. difficile (Z31) was able to prevent CDI in all animals that received it.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diarrhea; Clostridium difficile- associated diseases; Colitis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500853
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