Table 6.

Correlation between serum Zn and Fe versus MMPs, IL-1beta, IL-6 and TNF-alpha.

	Zn		Fe
	r/rs	p	r/rs	p
MMP-2	0.218 r	ns	0.207 r	ns
MMP-9	0.371 r	ns	−0.310 r	ns
IL-1beta	−0.670 rs	0.0009	0.576 rs	0.008
IL-6	0.026 rs	ns	0.332 rs	ns
TNF-alpha	−0.470 r	0.03	0.742 r	0.0002

r: Pearson’s correlation coefficient; rs: Spearman’s rank correlation coefficient; ns: p value not significant.