ACR	American College of Radiology
ADAMTS	aggrecanases
AGC	aggrecan
ANA	antinuclear antibodies
AOPP	advanced oxidation protein products
ARGS	aggrecan neoepitopes
AUC	the area under the ROC curve
BGN	biglycan
BMI	body mass index
Cr	creatinine
CRP	C-reactive protein
CS	chondroitin sulfate
CSPG	chondroitin sulfate proteoglycan
DCN	decorin
DMARDs	disease-modifying antirheumatic drugs
DS	dermatan sulfate
EC	prednisone
ECM	extracellular matrix
ELISA	enzymatic immunoassays
ESR	erythrocyte sedimentation rate
ETA	etanercept
GAGs	glycosaminoglycans
HA	hyaluronic acid
Hb	hemoglobin
HC	healthy children
Ht	hematocrit
HS	heparan sulfate
HSPG	heparan sulfate proteoglycan
IL	interleukin
ILAR	International League of Associations for Rheumatology
JADAS-27	Juvenile Arthritis Disease Activity Score 27
JIA	juvenile idiopathic arthritis
KS	keratan sulfate
MMP	matrix metalloproteinase
MTX	methotrexate
PCM	pericellular matrix
PGs	proteoglycans
PLT	platelet
RBC	red blood cell
RF	rheumatoid factor
ROC	receiver-operating characteristic
ROS	reactive oxygen species
SLRPs	small leucine-rich proteoglycans
SSD	sulfasalazine
TCH	total cholesterol
TGF-β	transforming growth factor-beta
TNF-α	tumor necrosis factor-alpha
WBC	white blood cell