Table 1.
Milk clot formation; PMNL count; elastase activity; concentrations of IL-8, 22 and 23 kDa LDP, and Lf in mammary secretions from the uninfected and infected quarters of cows with S. aureus dry-period mastitis.
| Quarter | ||
|---|---|---|
| Uninfected (n = 21) | Infected (n = 7) | |
| S. aureus (log10 cfu/mL) | ND1 | 3.19 ± 0.17 |
| Milk clot formation (number of quarters) | 0 | 7 |
| PMNL (log10 count/mL) | 6.18 ± 0.04 | > 8.02 |
| Elastase (units/mL) | ND | 0.58 ± 0.11 |
| IL-8 (pg/mL) | ND | 1840 ± 581 |
| 22 and 23 kDa LDP (μg/mL) | 1.49 ± 0.39 | 35.7 ± 4.63 |
| Lf (mg/mL) | 9.70 ± 0.23 | 3.53 ± 0.283 |
1Not detectable.
2Due to the presence of milk clots, PMNL counts could not be precisely determined. PMNL counts of more than 108 cells/mL were excluded.
3Significantly different compared to the uninfected quarters.