TABLE 2.
Survival of P. aeruginosa strains in coincubation experiments with PMNs
| Strain | Mean no. of CFU surviving ± SEa
|
Fold increaseb | |||
|---|---|---|---|---|---|
| Initially | At 1 h | At 2 h | At 3 h | ||
| CHA | 56 ± 15 | 44 ± 12 | 63 ± 15 | 160 ± 18 | 2.8 |
| PAO1 | 60 ± 1 | 2 ± 1.5 | 2 ± 1 | 7 ± 3 | 0.1 |
| CHA-D1 | 48 ± 0.8 | 42 ± 3.6 | 38.8 ± 2.4 | 62 ± 8 | 1.3 |
| CHA-D1(pDD2) | 45 ± 15 | 47 ± 15 | 52 ± 6 | 132 ± 30 | 2.9 |
a
Values are means ± standard errors of results of at least three experiments. The biggest standard errors, calculated for cytotoxic strains [CHA and CHA-D1(pDD2)], are probably a consequence of the varied functionalities of PMNs from one preparation to another.
b
The fold increases represent the ratios of the numbers of CFU at 3 h to the numbers of CFU initially.