Table 1.

Proliferation, viability, and collagen secretion of fibroblasts.

Group	S-phase cell ratio (%)	Proliferation index (%)	CCK-8 OD value	Hydroxyproline (pg/mL)
Control group	9.31 ± 0.24	13.8 ± 0.5	1.76 ± 0.13	1126.4 ± 62.7
Model group	6.54 ± 0.29*	11.3 ± 0.6*	1.35 ± 0.12*	352.8 ± 60.6*
TIMP1 group	7.75 ± 0.27∗#	12.5 ± 0.5∗§	1.64 ± 0.14#	828.6 ± 58.9∗#

TIMP1: tissue inhibitor of metalloproteinase 1; *P < 0.01 versus control group; ^§ P < 0.05; ^# P < 0.01 versus model group. Data are mean ± SEM, n = 5.