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[Inhibitory effects of indomethacin and meloxicam on NF-kappa B in mouse peritoneal macrophages]

Y F Hu1, Y Guo, G F Cheng

  • 1Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China.

Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|February 13, 2003
PubMed
Abstract

Insights

Indomethacin and meloxicam inhibit nuclear factor-kappa B (NF-kappa B) activation in lipopolysaccharide-stimulated mouse macrophages. This finding suggests a potential anti-inflammatory mechanism for these drugs.

Area of Science:

  • Immunology
  • Pharmacology
  • Molecular Biology

Background:

  • Nuclear factor-kappa B (NF-kappa B) is a key transcription factor involved in inflammatory responses.
  • Lipopolysaccharide (LPS) is a potent stimulator of inflammatory pathways in macrophages.
  • Non-steroidal anti-inflammatory drugs (NSAIDs) like indomethacin and meloxicam are widely used to manage inflammation.

Purpose of the Study:

  • To investigate the inhibitory effects of indomethacin and meloxicam on NF-kappa B activation.
  • To determine if these NSAIDs modulate NF-kappa B signaling in LPS-stimulated macrophages.

Main Methods:

  • Primary cultures of mouse peritoneal macrophages were used.
  • Macrophages were stimulated with lipopolysaccharide (LPS).
  • NF-kappa B activation was quantified using electrophoretic mobility shift assay (EMSA).

Main Results:

  • LPS stimulation significantly increased NF-kappa B content in mouse peritoneal macrophages.
  • Both indomethacin and meloxicam demonstrated inhibitory effects on LPS-induced NF-kappa B activation.
  • The inhibitory effect was observed at drug concentrations ranging from 10(-7) to 10(-5) mol.L-1.

Conclusions:

  • Indomethacin and meloxicam effectively inhibit NF-kappa B activation in LPS-stimulated macrophages.
  • This inhibition of NF-kappa B may represent a significant mechanism underlying the anti-inflammatory actions of these NSAIDs.
  • The study provides molecular insights into the anti-inflammatory properties of indomethacin and meloxicam.

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