Table 1.

The sequences of the primers in this study

Primer	Sequences
Circ-NFKB1	Forward: 5′- GAGGATGGGATCTGCACTGT-3'
	Reverse: 5′- GCGAAACCTCCTCTTCCTG-3'
miR-203a-5p	Forward: 5′- GTGAAATGTTTAGGACCACTAG -3′
Collagen II	Forward: 5′- TGAGAGGTCTTCCTGGCAAA -3' Reverse: 5′- ATCACCTGGTTTCCCACCTT -3'
MMP1 MMP13 ERBB4 GAPDH	Forward: 5′- GCCATATATGGACGTT-3' Reverse: 5′- CACTTCTCCCCGAATCGT-3' Forward: 5′- GCCAGATGGGTTTTGAGAC-3' Reverse: 5′-GTGATGCCTGGGGACTGTT-3′ Forward: 5′-TAGACCCGGGAGAAGGAAGAGCATC-3' Reverse: 5′-TCGCCCGGGTTATGACACCACAGTATTCCG-3' Forward: 5'-CCACTCCTCCACCTTTGACG-3'
	Reverse: 5′-CCACCACCCTGTTGCTGTAG-3'
U6	Forward: 5′-GCGCGTCGTGAAGCGTTC-3'
	Reverse: 5′-GTGCAGGGTCCGAGGT-3'