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Methotrexate--how does it really work?

Edwin S L Chan1, Bruce N Cronstein

  • 1Department of Medicine, New York University School of Medicine, 550 First Avenue, NBV16N1, New York, NY 10016, USA. edwin.chan@nyumc.org

Nature Reviews. Rheumatology
|March 4, 2010
PubMed
Summary
This summary is machine-generated.

Methotrexate is a key treatment for rheumatic diseases. Its anti-inflammatory effects stem from adenosine release and polyamine inhibition, not just folate antagonism, explaining its efficacy and side effects.

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Published on: September 10, 2018

Area of Science:

  • Rheumatology
  • Pharmacology
  • Immunology

Background:

  • Methotrexate is a primary treatment for rheumatoid arthritis and other rheumatic conditions.
  • While folate antagonism explains its anti-cancer effects, its anti-inflammatory mechanisms in rheumatic diseases are not fully understood.
  • Concomitant folic or folinic acid does not impede its anti-inflammatory action, suggesting alternative pathways.

Approach:

  • Investigating the multifaceted mechanisms of methotrexate's anti-inflammatory activity.
  • Examining the role of adenosine release from cells, both in vitro and in vivo.
  • Exploring the potential contribution of polyamine inhibition to methotrexate's therapeutic effects.

Key Points:

  • Adenosine release from cells is a demonstrated mechanism for methotrexate's anti-inflammatory effects.
  • Inhibition of polyamines may also contribute to methotrexate's anti-inflammatory properties.
  • These mechanisms provide insight into both the efficacy and adverse effects of methotrexate in inflammatory disorders.

Conclusions:

  • Methotrexate's anti-inflammatory effects in rheumatic diseases are complex and multifactorial.
  • Adenosine release and polyamine inhibition are key pathways contributing to its therapeutic action.
  • Understanding these mechanisms is crucial for optimizing methotrexate treatment and managing its side effects.