Leukocytoclastic Vasculitis Medication
- Author: Jeffrey P Callen, MD; Chief Editor: Herbert S Diamond, MD more...
Medication Summary
No effective therapy has been established in all patients with leukocytoclastic vasculitis (LCV). A few of the therapies have been tested in controlled trials.
Stone et al (2010) conducted a multicenter, randomized, double-blind trial comparing rituximab (375 mg/m2/wk for 4 wk) with cyclophosphamide (2 mg/kg/d) in the treatment of ANCA-associated vasculitis. Prednisone was gradually tapered downward; the primary endpoint was remission of disease without use of prednisone at 6 months. The rituximab-based regimen was more efficacious than the cyclophosphamide-based regimen for inducing remission of relapsing disease; 67% of the rituximab group compared with 42% of the cyclophosphamide group reached the primary end point (P =0.01).[5]
Anti-inflammatory Agents
Class Summary
These agents inhibit key events involved in the inflammatory process.
Colchicine
Has effects against neutrophils, which probably are involved in the pathogenesis of cutaneous vasculitis. Has been demonstrated to be steroid sparing in open-label studies. The only double-blind, placebo-controlled trial failed to demonstrate efficacy; however, the study had several methodological errors.
Antibiotics
Class Summary
Some types of antimicrobials (eg, dapsone) have anti-inflammatory properties.
Dapsone (Avlosulfon)
Small, open-label studies or single case reports have suggested that dapsone is effective in some patients with cutaneous vasculitis.
Corticosteroids
Class Summary
These agents have anti-inflammatory properties and cause profound and varied metabolic effects. Corticosteroids modify the body's immune response to diverse stimuli.
Prednisone (Deltasone, Orasone, Meticorten)
Indicated for vasculitis affecting internal organs such as kidneys, lungs, or CNS. Skin involvement resulting in ulceration may require corticosteroid therapy.
Cytotoxic/Immunosuppressive Agents
Class Summary
These agents inhibit cell growth and proliferation, decreasing immune reactions.
Cyclophosphamide (Cytoxan, Neosar)
Useful in life-threatening cases of vasculitis. Patients with only skin disease generally should not be treated with this agent. Useful in patients with polyarteritis nodosa, Wegener granulomatosis, and Churg-Strauss syndrome. Alkylating agent that depresses T-cell and B-cell function.
Azathioprine (Imuran)
Antagonizes purine metabolism and inhibits synthesis of DNA, RNA, and proteins. May decrease proliferation of immune cells, which results in lower autoimmune activity.
Methotrexate (Rheumatrex, Folex PFS)
Unknown mechanism of action in treatment of inflammatory reactions; may affect immune function. Ameliorates symptoms of inflammation (eg, pain, swelling, stiffness). Adjust dose gradually to attain satisfactory response.
Mycophenolate (CellCept)
Inhibits inosine monophosphate dehydrogenase (IMPDH) and suppresses de novo purine synthesis by lymphocytes, thereby inhibiting their proliferation. Inhibits antibody production.
Two formulations are available and are not interchangeable. The original formulation, mycophenolate mofetil (MMF, CellCept) is a prodrug that, once hydrolyzed in vivo, releases the active moiety mycophenolic acid. A newer formulation, mycophenolic acid (MPA, Myfortic) is an enteric-coated product that delivers the active moiety.
Rituximab (Rituxan)
Antibody genetically engineered chimeric murine/human monoclonal antibody directed against the CD20 antigen found on the surface of normal and malignant B lymphocytes. Antibody is an IgG1-kappa immunoglobulin that contains murine light- and heavy-chain variable region sequences and human constant region sequences.
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