Ulinastatin Reduces Cancer Recurrence after Resection of Hepatic Metastases from Colon Cancer by Inhibiting MMP-9 Activation via the Antifibrinolytic Pathway

Table 1

Effect of ulinastatin on expression of MMP-9 and Ki-67 in tumor tissues.

Treatment groups	Sample size (𝑛)	Protein expression (staining score), mean ± SD
		MMP-9	Ki-67
Negative control	11	6.32±0.72	5.92±0.71
Early stage	11	5.55±0.86^a	4.53±0.96^a
Advanced stage	11	4.71±0.99^a,b	3.54±1.01^a,b

aP < 0.05 versus negative control group; ^bP < 0.05 versus early-stage treatment group.