COX-2	Cyclooxygenase-2
DCF-DA	5,6-carboxy-2′,7′-dichlorofluorescin diacetate
DMEM	Dulbecco’s modified Eagle’s medium
DMSO	Dimethylsulfoxide
ECL	Enhanced chemiluminescence
ECM	Extracellular matrix
EESS	Ethanol extract of S. serratifolium
ELISA	Enzyme-linked immunosorbent assay
FBS	Fetal bovine serum
GAPDH	Glyceraldehyde-3-phosphate dehydrogenase
HRP	Horseradish-peroxidase
IL-1β	Interleukin-1β
iNOS	Inducible NO synthase
MAPK	Mitogen-activated protein kinase
MMP	Matrix metalloproteinase
MTT	3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
NAC	N-acetyl-l-cysteine
NF-κB	Nuclear factor-kappa B
NO	Nitric oxide
OA	Osteoarthritis
PBS	Phosphate buffered saline
PGE2	Prostaglandin E2
PI3K	Phosphatidylinositol-3-kinase
ROS	Reactive oxygen species
RT-PCR	Reverse transcriptase-polymerase chain reaction