Table 2.
Antimicrobial activity of vaginal lactobacilli isolates against urogenital E. coli strains determined by a modified agar-spot method (inhibition zones in mm, expressed as mean±SD)
| Species | E. coli RTN038a | E. coli RTN047a | E. coli RTN100a | E. coli ATCC 700414b | E. coli ATCC 700336b |
|---|---|---|---|---|---|
| L. crispatus | 8.62±1.25* | 10.70±1.21 | 9.36±1.67** | 10.14±1.00*** | 10.42±1.28 |
| L. gasseri | 7.89±1.10 | 10.07±1.22 | 8.74±2.74 | 9.92±1.52 | 9.63±1.24 |
| L. jensenii | 6.47±2.23* | 9.67±1.75 | 6.90±3.18** | 8.58±2.66*** | 8.82±3.15 |
a
Three E. coli strains were previously isolated from women with bacterial vaginosis
b
reference strains: pyelonephritic strain of E. coli ATCC 700336 and cystitic strain of E. coli ATCC 700414. *p=0.0002; **p=0.003; ***p=0.006.