Antibiotic resistance of Vibrio parahaemolyticus isolated from pond-reared Litopenaeus vannamei marketed in Natal, Brazil
Braz. j. microbiol
;
42(4): 1463-1469, Oct.-Dec. 2011. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-614611
ABSTRACT
Ten out of fifty fresh and refrigerated samples of shrimp (Litopenaeus vannamei) collected from retailers in Natal (Rio Grande do Norte, Northeastern Brazil) tested positive for Vibrio parahaemolyticus. The Kanagawa test and multiplex PCR assays were used to detect TDH and TRH hemolysins and the tdh, trh and tlh genes, respectively. All strains were Kanagawa-negative and tlh-positive. Antibiotic susceptibility testing was done for seven antibiotics by the agar diffusion technique. Five strains (50 percent) presented multiple antibiotic resistance to ampicillin (90 percent) and amikacin (60 percent), while two strains (20 percent) displayed intermediate-level resistance to amikacin. All strains were sensitive to chloramphenicol. Intermediate-level susceptibility and/or resistance to other antibiotics ranged from 10 to 90 percent, with emphasis on the observed growing intermediate-level resistance to ciprofloxacin. Half our isolates yielded a multiple antibiotic resistance index above 0.2 (range 0.14-0.29), indicating a considerable risk of propagation of antibiotic resistance throughout the food chain.
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Índice:
LILACS (Américas)
Assunto principal:
Vibrio parahaemolyticus
/
Técnicas In Vitro
/
Resistência Microbiana a Medicamentos
/
Reação em Cadeia da Polimerase
/
Penaeidae
/
Suscetibilidade a Doenças
/
Proteínas Hemolisinas
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Braz. j. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
2011
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade Federal do Rio Grande do Norte/BR
/
Universidade Potiguar/BR
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