TABLE 3.
vacA and cagA genotypes found in Portuguese and Dutch H. pylori isolates determined by PCR-LiPA
| Type | No. of isolatesa
|
||||
|---|---|---|---|---|---|
| Portugal
|
The Netherlands
|
||||
| NUD (15) | CA (20) | DU (20) | PU (25)b | NUD (23) | |
| s1a/m1 | 1 | 1 | 1 | 14 | 8 |
| s1a/m2 | 3 | 2 | |||
| s1b/m1 | 6 | 14 | 2 | 2 | 1 |
| s1b/m2 | 1 | 3 | 1 | ||
| s2/m2 | 4 | 3 | 4 | 9 | |
| Multiplec | 3 | 5 | 11 | 1 | 3 |
| cagA negative | 5 | 2 | 2 | 4 | 9 |
| cagA positive | 10 | 18 | 18 | 21 | 14 |
a
Abbreviations: CA, gastric carcinoma; DU, duodenal ulcers; PU, peptic ulcers. Numbers in parentheses represent number of patients.
b
One isolate did not yield a PCR fragment from the s region, but it contained vacA m1 and was cagA positive.
c
More than one vacA s or m type was detected by LiPA.