Caffeic acid phenethyl ester attenuates IgE-induced immediate allergic reaction
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Updated: May 22, 2026

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Published on: June 29, 2021
1Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt. manarahna@yahoo.com
Abstract:
Caffeic acid phenethyl ester (CAPE) is the active component of honey bee propolis extracts. The results of the current study demonstrate that CAPE attenuated immunoglobulin (Ig)E-mediated allergic response in mast cells. Oral administration of CAPE inhibited IgE-mediated passive cutaneous anaphylaxis. CAPE effectively reduced both histamine and serotonin (5-HT)-induced vascular permeability in rats. CAPE also reduced histamine and leukotrienes (LTs) release from isolated rat peritoneal mast cells. Moreover, CAPE suppressed contraction induced by histamine (3 × 10(-8)-3 × 10(-5) M), 5-HT (3 × 10(-9)-10(-6) M) and adenosine (3 × 10(-8)-10(-5) M) in guinea pig tracheal zigzag. These findings provide evidence that CAPE may serve as an effective therapeutic agent for allergic diseases.
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