Arthritis, RheumatoidTretinoinInterleukin 1 Receptor Antagonist ProteinSynovial MembraneAntirheumatic AgentsSynovial FluidSialoglycoproteinsRheumatoid FactorReceptors, Retinoic AcidOsteoarthritisReceptors, Interleukin-1Antigens, CD45JointsSynovitisPeptides, CyclicHLA-DRB1 ChainsInterleukin-1Tumor Necrosis Factor-alphaRadiumAutoantibodiesSeverity of Illness IndexRetinal DehydrogenaseReceptors, Interleukin-17Arthritis, ExperimentalCells, CulturedMethotrexateArthritisMetacarpophalangeal JointHLA-DR AntigensCitrullineBlood SedimentationDepsidesCell DifferentiationRNA, MessengerRetinoidsCytokinesArthrographyArthritis, PsoriaticKeratolytic AgentsCase-Control StudiesRheumatologyBiological MarkersAntibodies, MonoclonalFibroblastsHLA-DR4 AntigenImmunoglobulin GInterleukin-6Genetic Predisposition to DiseaseFoot JointsEnzyme-Linked Immunosorbent AssayReceptors, Tumor Necrosis FactorSignal TransductionSulfasalazineTime FactorsRheumatic DiseasesTreatment OutcomeT-Lymphocyte SubsetsProtein Tyrosine Phosphatase, Non-Receptor Type 22Retinoid X ReceptorsAtrial Function, RightWrist JointFinger JointInterleukin-17Gene ExpressionInterleukin-1betaSpondylitis, AnkylosingMolecular Sequence DataT-LymphocytesRheumatoid NoduleGenotypeIsotretinoinFlow CytometryLupus Erythematosus, SystemicHand JointsGene Expression RegulationAntigens, CDVitamin AReverse Transcriptase Polymerase Chain ReactionCD4-Positive T-LymphocytesDisease ProgressionImmunophenotypingCohort StudiesLeukocytes, MononuclearArthritis, ReactiveAllelesMonocytesCell DivisionInflammationLymphocyte ActivationBase SequenceC-Reactive ProteinPolymorphism, Single NucleotideLeukemia, Promyelocytic, Acutep-AminoazobenzeneRadial ArteryInterleukinsSpondylarthropathiesAutoantigensMice, Inbred DBACollagen Type II