TABLE 1.
Characterization of the six fresh clinical H. pylori isolates used for infection of mice
| Fresh clinical isolate of H. pylori | Cell assay for vacuolating activity | PCR for vacA | PCR for cagA | IL-8 assay (pg/ml) |
|---|---|---|---|---|
| I (Ly27a) | Negative | s1m1 | Positive | 827.0 |
| II (SE088) | Negative | s1m2 | Positive | 895.4 |
| III (OM1605) | Negative | NDa | ND | ND |
| IV (OM1626) | Positive | s1m1 | Positive | 1,162.0 |
| V (Ca077) | Positive | s1m1 | Negative | 33.7 |
| VI (Ca117) | Positive | s1mb | Positive | 1,174.1 |
a
ND, not determined. H. pylori strain OM1605 could not be recultivated for molecular analysis.
b
The m allele was not determinable.