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Related Experiment Videos

Immunotherapy with grass pollen major allergens

O Osterballe

    Allergy
    |August 1, 1982
    PubMed
    Summary

    Perennial hyposensitization using a timothy extract offers significant clinical protection against grass pollen allergies, particularly in the second season. This immunotherapy effectively improved asthma symptoms but did not impact co-existing birch pollen allergies.

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    Area of Science:

    • Allergy and Immunology
    • Immunotherapy
    • Respiratory Medicine

    Background:

    • Grass pollen allergy is a prevalent condition impacting millions globally.
    • Current treatments include allergen immunotherapy, aiming to induce tolerance.
    • Optimizing immunotherapy extracts and understanding their efficacy are crucial.

    Purpose of the Study:

    • To evaluate the clinical efficacy of perennial hyposensitization with a partially purified timothy extract.
    • To compare its effectiveness against treatment with specific timothy major allergens.
    • To assess the impact on different allergic rhinitis symptoms and grass pollen-induced asthma.

    Main Methods:

    • Patients received perennial hyposensitization with a biologically standardized, aluminum hydroxide-adsorbed, partially purified timothy extract.
    • Treatment efficacy was assessed by comparing clinical protection against a control group or specific allergens.
    • Symptom scores for sneezing, rhinorrhea, nasal blockage, and asthma were recorded.

    Main Results:

    • The partially purified timothy extract demonstrated statistically significant clinical protection compared to treatment with timothy major allergens (Nos. 19 and 25).
    • Protection was more pronounced during the second grass pollen season than the first.
    • The therapy showed a greater benefit for sneezing than for rhinorrhea or nasal blockage.
    • An excellent effect was observed on grass pollen-induced asthma.

    Conclusions:

    • Partially purified timothy extract is an effective option for perennial hyposensitization in grass pollen allergy.
    • This immunotherapy provides significant clinical benefits, particularly for asthma control.
    • The treatment's efficacy is season-dependent and does not influence concurrent birch pollen allergy.

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