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[Propolis-induced contact allergy].

T M Schuler1, P J Frosch

  • 1Universitäts-Hautklinik Heidelberg.

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|March 1, 1988
PubMed
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Contact dermatitis to propolis affects beekeepers and those using propolis ointments. A specific cinnamic acid ester may be the primary allergen causing these reactions.

Area of Science:

  • Allergy and Immunology
  • Dermatology
  • Natural Products Chemistry

Context:

  • Contact dermatitis is a common skin reaction.
  • Propolis, a resinous mixture produced by bees, is increasingly used in topical preparations.
  • Occupational and cosmetic exposures can lead to sensitization.

Purpose:

  • To report cases of contact dermatitis caused by propolis.
  • To identify the causative agents within propolis through patch testing.
  • To investigate potential allergens in propolis and related natural compounds.

Summary:

  • Six patients (3 male, 3 female) presented with contact dermatitis attributed to propolis.
  • Male patients developed hand eczema from beekeeping exposure; female patients were sensitized by propolis in ointments.

Related Experiment Videos

  • Patch testing revealed reactions to propolis in all patients and Peruvian balsam in four.
  • A cinnamic acid ester (1.1-dimethylallyl-3',4'-dihydroxy cinnamic acid ester) from propolis and poplar buds was identified as a potential major allergen, testing positive in two of three patients.

    • Impact:

    • Highlights propolis as a significant contact allergen in both occupational and cosmetic settings.
    • Identifies a specific cinnamic acid ester as a likely major allergen, aiding in diagnosis and avoidance.
    • Informs dermatologists and allergists about propolis-induced contact dermatitis and its management.