Serogroups, K1 antigen, and antimicrobial resistance patterns of Aeromonas spp. strains isolated from different sources in Mexico
Mem. Inst. Oswaldo Cruz
;
101(2): 157-161, Mar. 2006. ilus
Artigo
em Inglês
| LILACS
| ID: lil-430892
RESUMO
A total of 221 strains of Aeromonas species isolated in Mexico from clinical (161), environmental (40), and food (20) samples were identified using the automated system bioMérieux-Vitek®. Antisera for serogroups O1 to 044 were tested using the Shimada and Sakazaki scheme. The K1 antigen was examined using as antiserum the O7K1C of Escherichia coli. Besides, we studied the antimicrobial patterns according to Vitek AutoMicrobic system. Among the 161 clinical strains 60 percent were identified as A. hydrophila, 20.4 percent as A. caviae, and 19.25 percent as A. veronii biovar sobria. Only A. hydrophila and A. veronii biovar sobria were found in food (55 and 90 percent respectively) and environmental sources (45 and 10 percent respectively). Using "O" antisera, only 42.5 percent (94/221) of the strains were serologically identified, 55 percent (121/221) were non-typable, and 2.5 percent (6/221) were rough strains. Twenty-two different serogroups were found, O14, O16, O19, O22, and O34 represented 60 percent of the serotyped strains. More than 50 percent of Aeromonas strain examined (112/221) expressed K1 encapsulating antigen; this characteristic was predominant among Aeromonas strains of clinical origin. Resistance to ampicillin/sulbactam and cephazolin was detected in 100 and 67 percent of Aeromonas strain tested for their susceptibility to antibiotics. In conclusion, antibiotic-resistant Aeromonas species that possess the K1 encapsulating antigen and represent serogroups associated with clinical syndrome in man are not uncommon among Aeromonas strains isolated from clinical, food and environmental sources in Mexico.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Polissacarídeos Bacterianos
/
Microbiologia da Água
/
Aeromonas
/
Microbiologia de Alimentos
/
Antígenos de Bactérias
Tipo de estudo:
Estudo prognóstico
Limite:
Humanos
País/Região como assunto:
México
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
2006
Tipo de documento:
Artigo
País de afiliação:
México
Instituição/País de afiliação:
Instituto Politécnico Nacional/MX
/
Laboratorios Estatales de Salud Pública de Hidalgo/MX
/
Universidad Nacional Autónoma de México/MX
Similares
MEDLINE
...
LILACS
LIS