Cellular immune responses in Helicobacter heilmannii infection: evaluation of the role of the host and the bacterium.
Dig Dis Sci
; 47(4): 823-30, 2002 Apr.
Article
in En
| MEDLINE
| ID: mdl-11991617
ABSTRACT
We evaluated some aspects of the immune response to Helicobacter heilmannii in two mouse strains. Gastritis that was more severe in infected C57BL/6 mice. A proliferative response to H. pylori antigens was observed in splenocytes from H. heilmannii-positive and -negative mice, similar in the positive- and negative-BALB/c mice, but lower in the positive- than in the negative-C57BL/6 animals. A decrease in B cells and an increase in CD4+ cells after stimulation with type I H. pylori antigen and an increase in CD8+ cells after stimulation with type I and II antigens was observed in infected C57BL/6 mice. Conversely, the percentage of CD4+, CD8+, and B cells was similar in positive- and negative-BALB/c mice. These results demonstrated that the immune response is similar in H. heilmannii and H. pylori infection and strengthened the importance of host and bacterial virulence markers in the immune response to gastric Helicobacter infections.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Helicobacter Infections
/
Helicobacter heilmannii
/
Immunity, Cellular
Limits:
Animals
Language:
En
Journal:
Dig Dis Sci
Year:
2002
Document type:
Article
Affiliation country:
Brasil