| Term 
 
        | Pro-drug; 6-MP --> inhibits purine synthesis |  | Definition 
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        |  | 
        
        | Term 
 
        | Nitrogen mustard; alkylates nucleic acids--> cross-links strands of DNA/RNA |  | Definition 
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        |  | 
        
        | Term 
 
        | Inhibits calcineurin --> blocks production and release of IL-2 and inhibits T-cell activation |  | Definition 
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        |  | 
        
        | Term 
 
        | Uncertain. May inhibit WBC migration and impair complement-dependent antibody responses |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | prodrug; M1 (Active metabolite) inhibits DHODH --> blocks pyrimidine synthesis |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | inhibits DHFR --> block purine synthesis |  | Definition 
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        |  | 
        
        | Term 
 
        | uncertain. may inhibit collagenase activity in synovial tissue or inhibit MMPs (prevents WBC migration) |  | Definition 
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        |  | 
        
        | Term 
 
        | Uncertain. Reduces IgM rheumatoid factor and immune complexes. May depress T-cell activity |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Uncertain. Metabolized to sulfapyridine and mesalamine by gut flora. Mesalamine (5-ASA) inhibits local prostaglandin syntehsis |  | Definition 
 
        | sulfasalazine, enteric coated |  | 
        |  | 
        
        | Term 
 
        | uncertain. may inhibit phagocytosis and lysosomal stabilization when taken up by macrophages |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | uncertain. may modulate IL-2 and IL-2 receptors --> blocks T-cell activation |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Binds glucocorticoid receptors --> blocks leukocyte infiltration, inhibits synthesis of inflammatory mediators, and reduces humoral responses |  | Definition 
 
        | prednisone, prednisolone, dexamethasone |  | 
        |  | 
        
        | Term 
 
        | reversibly inhibits COX-1 and 2 --> reduces prostaglandin synthesis, blocks chemotaxis, and alters WBC activity |  | Definition 
 
        | diclofenac, ibuprofen, indomethacin, naproxen |  | 
        |  | 
        
        | Term 
 
        | human IgG specific for TNF-alpha; blocks TNF-alpha --> inhibits proinflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | Fab fragment of humanized IgG specific for TNF-alpha; blocks TNF_alpha --> inhibits pro-inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | TNF receptor- IgG fusion protein; blocks TNF-alpha --> inhibits pro-inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | human IgG specific for TNF-alpha; blocks TNF-alpha --> inhibits pro-inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | chimeric IgG specifc for TNF-alpha; blocks TNF-alpha --> inhibits pro-inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | blocks IL-1 receptors--> inhibits various inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | humanized IgG specific for IL-6 receptor; blocks Il-6 receptors --> inhibits pro-inflammatory pathways |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | CTLA4-IgG fushion protein; blocks CD80 and CD86 costimulation on APCs --> blocks optimal T-cell activation |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | chimeric IgG specific for CD20; blocks CD20 on B-cells --> induces complement-dependent B-cell cytotoxicity |  | Definition 
 | 
        |  | 
        
        | Term 
 
        | A reduced form of folic acid; supplies cells with the necessary cofactor for purine synthesis without utilizing DHODH for reduction |  | Definition 
 
        | leucovorin, levoleucovorin |  | 
        |  |