Arthritis, RheumatoidArthritisCytokinesArthritis, ExperimentalArthritis, InfectiousSynovial MembraneAntirheumatic AgentsArthritis, JuvenileSynovial FluidRheumatoid FactorArthritis, PsoriaticJointsArthritis, ReactiveSynovitisOsteoarthritisTumor Necrosis Factor-alphaMethotrexateBlood SedimentationSeverity of Illness IndexAutoantibodiesSulfasalazineRheumatoid NoduleMetacarpophalangeal JointGold Sodium ThiomalateArthrographyRheumatologyPeptides, CyclicMice, Inbred DBARheumatic DiseasesImmunoglobulin GHLA-DRB1 ChainsInterleukin-6Wrist JointAntibodies, MonoclonalCells, CulturedHLA-DR AntigensFinger JointInterleukin-1HLA-DR4 AntigenCollagen Type IIReceptors, Tumor Necrosis FactorInflammationTreatment OutcomeCitrullineAutoimmune DiseasesSpondylitis, AnkylosingAnti-Inflammatory AgentsBiological MarkersEnzyme-Linked Immunosorbent AssayArthritis, GoutyOrganogold CompoundsFoot JointsLupus Erythematosus, SystemicInflammation MediatorsT-LymphocytesDrug Therapy, CombinationInterferon-gammaIsoxazolesHydroxychloroquineKnee JointPenicillamineCase-Control StudiesDisease Models, AnimalRats, Inbred LewInjections, Intra-ArticularFibroblastsInterleukin-1betaInterleukin-17RNA, MessengerPrednisoloneJoint DiseasesHand JointsDisability EvaluationMacrophagesGenetic Predisposition to DiseaseTime FactorsMice, Inbred C57BLSpondylarthropathiesInterleukin 1 Receptor Antagonist ProteinC-Reactive ProteinInterleukin-10Tarsal JointsInterleukinsAuranofinLymphocyte ActivationFelty SyndromeGlucocorticoidsSjogren's SyndromeMonocytesImmunoglobulin MHand Deformities, AcquiredAntibodies, Monoclonal, HumanizedTenosynovitisAutoantigensDouble-Blind MethodCollagenSignal TransductionProtein Tyrosine Phosphatase, Non-Receptor Type 22Anti-Inflammatory Agents, Non-SteroidalFlow Cytometry