ROS	Reactive oxygen species
TNF α	Tumor necrosis factor alpha
IFN γ	Interferon gamma
IL	Interleukins
CRP	C reactive protein
DNA	Dezoxiribonucleic acid
ATP	Adenosine triphosphate
RNA	Ribonucleic acid
OA	Osteoarthritis
MMP	Matrix metalloproteinase
PDGF	Platelet derived growth factor
TGF-β	Transforming growth factor beta
IGF-I	Insulin-like growth factor-I
BMP-6	Morphogenic protein 6
p16INK4a	Cyclic-dependent kinase inhibitor
MAC	Membrane attack complex
SMACs	Second mitochondria-derived activator of caspases
IAPs	Inhibitors of apoptosis
Apaf-1	Apoptotic protease activating factor-1
DISC	Death inducing signaling complex
FasL	Fas ligand