Table 4.
Comparison of secretions of hydroxyproline, type I and IV collagen in culture supernatant (x̅±S)
| Group | n | Hydroxyproline (μg/g.pr) | Type I collagen (pg/ml) | Type IV collagen (pg/ml) |
|---|---|---|---|---|
| Sham operation group | 8 | 326.21±19.51 | 247.82±13.52 | 154.31±16.83 |
| Operation group | 6 | 589.82±21.83a | 718.52±21.43a | 638.63±21.37a |
| RSG group | 8 | 471.09±15.42b | 462.61±20.41b | 469.83±20.93b |
| PRNK group | 7 | 452.68±17.42b,c | 483.71±18.65b,c | 487.72±19.04b,c |
a
P<0.01 compared with sham operation group;
b
P<0.05 compared with operation group;
c
No statistically significant difference compared with RSG group.