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Related Experiment Videos

Allergenic variability in olea pollen.

D Barber1, J Carpizo, M C Garcia-Rumbao

  • 1Alergia e Immunologia Abelló, S.A. C/Miguel Fleta, Madrid, Spain.

Annals of Allergy
|January 1, 1990
PubMed
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Olive pollen allergen potency varies significantly between batches. This variation correlates with a specific protein component, impacting allergic reactions in individuals.

Area of Science:

  • Allergen immunotherapy
  • Molecular allergology
  • Pollen research

Background:

  • Olive pollen is a common allergen.
  • Variability in pollen allergenicity is a known issue.
  • Understanding allergen components is crucial for diagnosis and treatment.

Purpose of the Study:

  • To investigate the causes of varying allergenic potency in olive pollen.
  • To identify specific olive pollen components responsible for allergic reactions.
  • To correlate protein content with in vitro allergenic activity.

Main Methods:

  • Radioallergosorbent inhibition (RAST inhibition) assays were used to measure allergenic potency.
  • Size-exclusion high-performance liquid chromatography (SE-HPLC) analyzed protein content.

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  • Electrophoresis characterized protein components.

    • Main Results:

    • Significant differences in in vitro allergenic potency were found among six olive pollen batches.
    • Potency correlated directly with the content of a 55,000 D multimeric protein component.
    • Electrophoresis revealed differences in a 20,000 D band with an isoelectric point around 5, likely the monomeric form of the major allergen.

    Conclusions:

    • Olive pollen allergenic potency is linked to specific protein components.
    • The 55,000 D component and its 20,000 D monomer are key factors in olive pollen allergy.
    • Further research can refine diagnosis and immunotherapy for olive pollen allergy.