GAPDH	F, 5′‐CACCACCATGGAGAAGGCCG‐3′;
GAPDH	R, 5′‐ATGATGTTCTGGGCAGCCCC‐3′;
NFATc1	F, 5′‐CAACGCCCTGACCACCGATAG‐3′;
NFATc1	R, 5′‐GGCTGCCTTCCGTCTCATAGT‐3′;
CK	F, 5′‐CCTCTCTTGGTGTCCATACA‐3′;
CK	R, 5′‐ATCTCTCTGTACCCTCTGCA‐3′;
MMP9	F, 5′‐AGACGACATAGACGGCATCC‐3′;
MMP9	R, 5′‐TGGGACACATAGTGGGAGGT‐3′;
C‐FOS	F, ACGTGGAGCTGAAGGCAGAAC‐3′;
C‐FOS	R, AGCCACTGGGCCTAGATGATG‐3′;
OPG	F,5′‐CGAGCGCAGATGGATCCTAA‐3′;
OPG	R, 5′‐CCACATCCAACCATGAGCCT‐3′;
RANKL	F, 5′‐CCCATCGGGTTCCCATAAAGT‐3′;
RANKL	R, 5′‐CGACCAGTTTTTCGTGCTCC‐3′;