RA Study Guide Flashcards
1st Line RA tx
Non-biologic DMARDs
2nd Line RA tx
Biologic DMARDs
Preferred DMARD for RA
Methotrexate
Methotrexate MoA
Inhibits dihydrofolate redutase & production of cytokines to prevent joint destruction
Methotrexate Drawbacks
Contraindications (Hepatic dz; Preg; reduce with renal dz); Side effects (Hepatotoxic; Pulm fibrosis; Leukopenia, Thrombocytopenia)
Hydroxychloroquine Drawbacks
Slow onset (6 mo); Side effects (eye problems)»_space; Eye exam Qyear required
Sulfasalazine Drawbacks
Monitoring (LFTs & CBC); Side effects (agranulocytosis; hepatotoxic; photosensitivity); slow onset (6 mo); Sulfa allergy
Preferred RA drug in Pregnancy
Sulfasalazine
Leflunomide (Arava) MoA
Prevents T cell response by inhibiting dihydrorotate dehydrogenase in mitochondria)
Leflunomide (Arava) Drawbacks
Avoid with heavy ETOH use; Side effects (Hepatotoxic, HTN, Abd pain); Monitor (LFTs, CBC, & Cr)
Non-biologic DMARDS for RA
Methotrexate; Hydroxychloroquine; Sulfasalazine; Leflunomide
Biologic DMARD classes
Tumor necrosis factor antagonists; Interleukin 1 receptor antagonist; Costimulation modulators; Anti-CD20 Monoclonal Ab; Anti-Interleukin 6 receptor Ab
Tumor Necrosis Factor Antagonists
Etanercept (Enbrel); Infliximab (Remicade); Adalimumab (Humira)
Costimulation Modulator (Prevents T-cell activation)
Abatacept (Orencia)
Anti-CD20 Monoclonal AB (B-cell depletion)
Rituximab (Rituxan)