ABL	Alveolar bone level
ACPA	Anti-citrullinated proteins antibodies
AIA	Antigen-induced arthritis
BOP	Bleeding on probing
BSA	Bovine serum albumin
CAL	Clinical attachment level
CIA	Collagen-induced arthritis
CRP	C-reactive protein
CT	Computer tomography
DAS28	Disease Activity Score including 28-joint count
DMARD	Disease-modifying antirheumatic drugs
ESR	Erythrocyte sedimentation rate
EULAR	European league against rheumatism
GC	Glucocorticoids
GCF	Gingival crevicular fluid
GI	Gingival index
GM-CSF	Granulocyte macrophage colony-stimulating factor
IgG	Immunoglobulin G
IL-1β	Interleukin-1β
IL-17	Interluekin-17
IL-6	Interluekin-6
LtxA	Leukotoxin A
MAMP	Microbe-associated molecular pattern
MMP	Matrix metalloproteinase
MRI	Magnetic resonance imaging
NHANES	National Health and Nutrition Examination Survey
NHS	National Health Service
NSAID	Non-steroidal anti-inflammatory drugs
NSPT	Non-surgical periodontal treatment
PAD	Peptidylarginine deiminase
PAMP	Pathogen-associated molecular pattern
PD	Periodontal disease
PGE2	Prostaglandin E2
PPD	Probing pocket depth
RA	Rheumatoid arthritis
RANK-L	Receptor activator of NF-κB ligand
RF	Rheumatoid factor
ROS	Reactive oxygen species
SE	Shared-epitope
TGF-β	Transforming growth factor-β
TNF-α	Tumor necrosis factor-α
VAS	Visual analogue scale
WT	Wild-type