Study on BALB/c mice by immunization with genetic engineering vaccines of enterohaemorrhagic Escherichia coil O157:117 / 中华微生物学和免疫学杂志
Chinese Journal of Microbiology and Immunology
; (12): 828-832, 2008.
Article
en Zh
| WPRIM
| ID: wpr-381682
Biblioteca responsable:
WPRO
ABSTRACT
Objective To investigate immunoprophylactic potential of genetic engineering vaccines of enterohaemorrhagie Escherichia coli O157:H7 in BALB/c mice after immunization with these vaccines. Methods Sixty BALB/c mice (3 weeks old) were randomized averagely into 5 groups. Group 1-3 were im-munized respectively with IntiminC300, Stx2B and HIyAN436, group 4 with a combination of these three vaccines, and group 5 with PBS. Each mouse was immunized with vaccine(100 μg)and Al(OH)3 adjuvant (100 μg) for 3 times. After 7 d of the second and third immunization, serum of each mouse was collected and the different antibodies were detected. After 10 d of the last immunization, all mice were given drinking water containing streptomycin for 3 d before and following oral challenge with O157:H7 (109 CFU), and treated with clinical, microbiological and pathological examination. Results The three vaccines elicited high titer antiserum, and some mice were died after infection with O157. The livability of group 1-4 was re-spectively 73%, 64%, 36% and 91%. And these vaccines depressed fecal and colon shedding with O157. Condusion IntiminC300, Stx2B and HIyAN436 have certain protective efficacy for infection of O157, and combined immunization was more effective than single vaccine.
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Base de datos:
WPRIM
Tipo de estudio:
Clinical_trials
Idioma:
Zh
Revista:
Chinese Journal of Microbiology and Immunology
Año:
2008
Tipo del documento:
Article