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Molecular and cellular effects of methotrexate
1Department of Rheumatology, University Hospital, Inselspital, Berne, Switzerland.
Current Opinion in Rheumatology
|May 18, 1999
Summary
Methotrexate (MTX) primarily exerts anti-inflammatory effects through adenosine, impacting cytokines and cell differentiation. This understanding opens avenues for new therapeutic strategies in immunoinflammatory disorders.
Area of Science:
- Immunology
- Pharmacology
- Molecular Biology
Background:
- Methotrexate (MTX) is a key drug for treating immunoinflammatory disorders.
- Understanding MTX's precise mechanisms of action is crucial for optimizing its use.
Purpose of the Study:
- To review and synthesize recent findings on MTX's mechanisms of action.
- To highlight the role of adenosine in MTX's anti-inflammatory effects.
- To explore potential novel therapeutic strategies based on MTX's molecular actions.
Main Methods:
- Review of scientific literature published up to 1998.
- Analysis of studies investigating MTX's effects on cellular and molecular pathways.
- Synthesis of data on cytokine modulation and cell differentiation.
Main Results:
- Evidence indicates adenosine mediates a significant portion of MTX's anti-inflammatory activity.
- MTX profoundly influences cytokine production, cytokine inhibitors, and immune cell differentiation.
- The role of adenosine explains many of MTX's observed therapeutic effects.
Conclusions:
- Adenosine is a key mediator of methotrexate's anti-inflammatory actions.
- New pharmacologic strategies targeting MTX pathways may improve treatment for immunoinflammatory diseases.