|  |  | MMP3 | MMP7 | MMP13 | |||
---|---|---|---|---|---|---|---|---|
 |  |  | Mean (percent) | SEM | Mean (percent) | SEM | Mean (percent) | SEM |
Non-degenerate | NP | Untreated | 0.9 | 1.0 | 4.2 | 2.1 | 2.7 | 0.9 |
 |  | IL-1 | 6.5 | 1.2 | 35.8 | 7.6 | 11.3 | 5.2 |
 |  | IL-1Ra | 0 | 0.0 | 0.2 | 0.1 | 0.2 | 0.1 |
 | AF | Untreated | 0.3 | 0.2 | 0.4 | 0.2 | 0.3 | 0.2 |
 |  | IL-1 | 1.2 | 0.5 | 1.9 | 0.9 | 1.5 | 0.5 |
 |  | IL-1Ra | 0.0 | 0.0 | 0.2 | 0.1 | 0.0 | 0.0 |
Moderately degenerate | NP | Untreated | 10.2 | 4.1 | 72.6 | 10.9 | 31.9 | 7.7 |
 |  | IL-1 | 14.1 | 5.6 | 83.4 | 10.1 | 38.2 | 10.7 |
 |  | IL-1Ra | 0.0 | 0.0 | 3.3 | 1.2 | 2.7 | 1.1 |
 | AF | Untreated | 1.9 | 0.9 | 3.5 | 1.1 | 1.0 | 0.4 |
 |  | IL-1 | 2.8 | 1.4 | 5.1 | 0.9 | 1.5 | 0.5 |
 |  | IL-1Ra | 0.2 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 |
Severely degenerate | NP | Untreated | 3.6 | 1.2 | 17.9 | 6.0 | 16.2 | 7.2 |
 |  | IL-1 | 6.5 | 3.1 | 19.4 | 6.5 | 19.9 | 6.3 |
 |  | IL-1Ra | 0.2 | 0.1 | 2.2 | 1.1 | 2.1 | 1.2 |
 | AF | Untreated | 2.0 | 0.4 | 0.9 | 0.4 | 0.2 | 0.1 |
 |  | IL-1 | 2.8 | 0.7 | 1.1 | 0.2 | 2.3 | 0.7 |
 |  | IL-1Ra | 0.2 | 0.1 | 0.2 | 0.1 | 0.1 | 0.0 |