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Immunité et nutrition

COX-2

COX-2 is an enzyme that produces inflammatory molecules and is modulated by dietary components.

Definition

Cyclooxygenase-2 is an enzyme that produces pro-inflammatory prostaglandins involved in inflammation, pain, and fever, and is a target for anti-inflammatory medications.

How it works

COX-2 (cyclooxygenase-2) is an inducible enzyme that produces prostaglandins, particularly PGE2, which are important inflammatory mediators. Unlike the constitutive COX-1 enzyme that produces protective prostaglandins for stomach and kidney function, COX-2 is upregulated during inflammation and immune responses. This enzyme is a target for NSAIDs (nonsteroidal anti-inflammatory drugs) used to manage pain and inflammation. However, chronic COX-2 activation contributes to tissue damage and is associated with chronic inflammatory diseases. Dietary polyphenols, omega-3 fatty acids, and other phytochemicals can naturally downregulate COX-2 expression without the side effects of medications. This demonstrates how nutrition offers a gentler approach to inflammatory management.

Role

Produces inflammatory prostaglandins that are essential acutely but contribute to chronic inflammation when persistently overactive.

Examples

  • COX-2 elevation in arthritis
  • Production of pain-promoting prostaglandins
  • Target of aspirin and other NSAIDs
  • Natural inhibition by ginger and turmeric

Recommendations

Include COX-2-modulating foods like ginger, turmeric, green tea, and fatty fish rich in omega-3 fatty acids. Minimize processed foods and seed oils high in pro-inflammatory omega-6 fatty acids. Use herbs and spices liberally as both flavoring and medicinal support.

Key takeaway

Dietary polyphenols and omega-3 fatty acids provide natural COX-2 modulation for managing inflammation without pharmaceutical side effects.

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