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
Artículo
en Inglés
| 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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Vibrio parahaemolyticus
/
Técnicas In Vitro
/
Farmacorresistencia Microbiana
/
Reacción en Cadena de la Polimerasa
/
Penaeidae
/
Susceptibilidad a Enfermedades
/
Proteínas Hemolisinas
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Braz. j. microbiol
Asunto de la revista:
Microbiologia
Año:
2011
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal do Rio Grande do Norte/BR
/
Universidade Potiguar/BR
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