methotrexate in ttt of rheumatoid arthritis

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Methotrexate in TTT of rheumatoid arthritis

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Page 1: Methotrexate in ttt of rheumatoid arthritis

Methotrexate in TTT of rheumatoid arthritis

Page 2: Methotrexate in ttt of rheumatoid arthritis

Methotrexate:• MOA: Is folic acid antagonist + cytotoxic +

immunosuppressant.• multiple IC enzymes → activation of ˉˉ ˉˉ

PMNLs, T-cells, and macrophages.• Is one of the first line drugs.• Used in >90% of RA cases.• One weekly.• Folic acid 5mg 24 hrs after methotrexate

dose to compensate for folic acid deficiency.

Page 3: Methotrexate in ttt of rheumatoid arthritis

MOA of methotrexate (MTX):

Page 4: Methotrexate in ttt of rheumatoid arthritis

S.E:1. Hepatotoxicity : common (monitor

LFTs),2. Myelosuppression (BMD),3. Teratogenicity.