Chemokine CXCL12 and its receptor CXCR4 expression are associated with perineural invasion of prostate cancer

Table 5 The average positive cell number of CXCL12, CXCR4, MMP-2, and MMP-9 expression in prostate cancer and prostate hyperplasia ( $\bar{x}$ ± s)

groups	n	CXCL12	CXCR4	MMP-2	MMP-9
Prostate cancer	22	37.30 ± 13.24*	37.09 ± 14.66*	42.86 ± 15.44*	52.48 ± 23.51*
Prostate hyperplasia	20	2.87 ± 1.17	3.27 ± 0.71	11.23 ± 5.10	19.22 ± 4.75
t value		4.55	3.86	3.55	2.38

*The difference between prostate cancer and prostate hyperplasia is statistically significant (P < 0.05).

ISSN: 1756-9966