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
Article
ي En
| LILACS
| ID: lil-430892
المكتبة المسؤولة:
BR1.1
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.
النص الكامل:
1
الفهرس:
LILACS
الموضوع الرئيسي:
Polysaccharides, Bacterial
/
Water Microbiology
/
Aeromonas
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Food Microbiology
/
Antigens, Bacterial
نوع الدراسة:
Prognostic_studies
المحددات:
Humans
البلد/الأقليم حسب الموضوع:
Mexico
اللغة:
En
مجلة:
Mem Inst Oswaldo Cruz
/
Mem. Inst. Oswaldo Cruz
/
Mem. Inst. Oswaldo Cruz (Online)
/
Memórias do Instituto Oswaldo Cruz (Impresso)
/
Proceedings of the Instituto Oswaldo Cruz
موضوع المجلة:
MEDICINA TROPICAL
/
PARASITOLOGIA
السنة:
2006
نوع:
Article