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Orchid allergy.

B M Hausen, A Shoji, O Jarchow

    Archives of Dermatology
    |September 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Handling Cymbidium orchids can cause contact allergy due to 2,6-dimethoxy-1,4-benzoquinone. This chemical, found in many plants, was identified as the primary allergen in a case study and animal experiments.

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    Area of Science:

    • Dermatology
    • Allergology
    • Organic Chemistry

    Background:

    • Occupational contact allergy can arise from prolonged exposure to specific allergens in the workplace.
    • Ornamental plants, such as orchids, are increasingly common in office environments, posing potential risks to employees.

    Observation:

    • A female office worker developed contact allergy after years of handling Cymbidium orchid cultivars.
    • Experimental sensitization in guinea pigs confirmed the allergenic potential of these orchids.

    Findings:

    • Chemical analysis revealed two quinones in the orchid extracts.
    • 2,6-dimethoxy-1,4-benzoquinone was identified as the main sensitizing agent, confirmed by X-ray crystallography.
    • This specific quinone elicited strong reactions in the allergic patient and sensitized animals.

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    Implications:

    • 2,6-dimethoxy-1,4-benzoquinone, despite being a moderate sensitizer, is a significant contact allergen due to its presence in over 50 plant and wood species.
    • Awareness of this allergen is crucial for preventing occupational contact dermatitis in individuals handling relevant plant materials.