Table 2. Primers used for RT-PCR analysis of gene expression.

Gene	Forward (5’—3’)	Reverse (5’—3’)
GAPDH	ACCCACTCCTCCACCTTTGAC	TCCACCACCCTGTTGCTGTAG
Aggrecan	AAGAATCAAGTGGAGCCGTGTGTC	TGAGACCTTGTCCTGATAGGCACT
p16INK4a	AATCTCCGCGAGGAAAGC	GTCTGCAGCGGACTCCAT
p21	GGAGACTCTCAGGGTCGAAA	GGATTAGGGCTTCCTCTTGG
MMP13	TCCCTGCCCCTTCCCTATGGT	CTCGGAGCCTGTCAACTGTGGA
ADAMTS4	ATGGCTATGGGCACTGTCTC	GTGTTTGGTCTGGCACATGG
IL-1β	GCAACTGTTCCTGAACTCAACT	ATCTTTTGGGGTCCGTCAACT
IL-6	GACTTCCATCCAGTTGCCTTC	ATTTCCACGATTTCCCAGAG
TNFα	AACAGAAACTCCAGAACATCTTGG	GTCGCGGATCATGCTTTCTG