Table 2.
Impact of PAIs on virulence of strain 536 in infant murine model of ascending UTI
Strain used for infection | LD50 |
|
---|---|---|
cfu/ml* | Change† | |
536 wild type | 4.89 × 103 | – |
536ΔPAI I (536-114) | 3.46 × 106 | 709 |
536ΔPAI II (536-225) | 4.57 × 106 | 935 |
536ΔPAI III | 2.23 × 106 | 456 |
536ΔPAI IV | 1.66 × 103 | 0.34 |
536ΔPAI V | 8.25 × 103 | 1.69 |
536ΔPAI IΔPAI II (536-2I) | >109 | >2 × 105 |
*Approximately 25 μl of inoculum was injected into the bladder of mice.
†Relative fold increase compared with the wild-type strain.