Table IV.

COX-2, PRDXI, PRDX6 and NF-κB mRNA expression level of OSCC tissues according to differentiation.

	OSCC mRNA expression, pg/ml
Genes	Low-grade tumor (G1) (n=39)	High-grade tumor (G2 and G3) (n=11)	P-value
COX-2	7.245±2.482	10.469±6.887	0.788
PRDXI	9.848±1.907	15.368±3.591	0.171
PRDX6	3.036±0.532	4.378±1.371	0.343
NF-κB	8.488±1.490	17.218±5.228	0.048

Low-grade tumor, well-differentiated (G1); high-grade tumor, moderately-differentiated (G2) and poorly-differentiated (G3). OSCC, oral squamous cell carcinoma; COX-2, cyclooxygenase 2; PRDX, peroxiredoxin; NF-κB, nuclear factor-κB.