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Antianaphylactic properties of eugenol

H M Kim¹, E H Lee, C Y Kim

¹Department of Oriental Pharmacy, Wonkwang University, Iksan, Chonbuk, South Korea.

Pharmacological Research

|March 21, 1998

Summary

Eugenol, a compound found in cloves, effectively prevents anaphylaxis in rats by inhibiting histamine release and mast cell degranulation. This natural compound shows significant antianaphylactic properties.

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Area of Science:

Pharmacology
Immunology
Natural Products Chemistry

Background:

Anaphylaxis is a severe allergic reaction.
Mast cell degranulation and histamine release are key mediators of anaphylaxis.
Eugenol is a major component of clove oil with known biological activities.

Purpose of the Study:

To investigate the antianaphylactic effects of eugenol.
To determine the mechanism by which eugenol affects anaphylaxis.

Main Methods:

Compound 48/80-induced systemic anaphylaxis model in rats.
Passive cutaneous anaphylaxis model in rats.
Measurement of serum histamine levels.
Inhibition of histamine release from rat peritoneal mast cells (RPMC).

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Assessment of mast cell degranulation.

Measurement of tumor necrosis factor-alpha (TNF-α) production.

Main Results:

Eugenol completely inhibited compound 48/80-induced systemic anaphylaxis at 10 µg/g BW.
Eugenol significantly reduced elevated serum histamine levels in rats.
Eugenol inhibited passive cutaneous anaphylaxis.
Eugenol dose-dependently inhibited histamine release from RPMC.
Eugenol prevented mast cell degranulation.
Eugenol inhibited TNF-α production.

Conclusions:

Eugenol possesses significant antianaphylactic properties.
Eugenol exerts its antianaphylactic effects by inhibiting mast cell degranulation and subsequent mediator release.
Eugenol is a promising natural compound for managing anaphylactic reactions.