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Immunochromatographic direct on sampling filter test for aeroallergens.

Leif Holmquist1, Olof Vesterberg

  • 1National Institute for Working Life, Ekelundsvägen 16, Solna, SE-11279 Stockholm, Sweden. leif.holmquist@nrm.se

Journal of Biochemical and Biophysical Methods
|September 27, 2003
PubMed
Summary

A new immunochromatographic method allows for rapid, direct determination of airborne allergens on sampling filters. This technique detects specific allergens like pollen and mould with high sensitivity, aiding in air quality assessment.

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Immunology

Background:

  • Accurate determination of airborne allergens is crucial for public health and environmental monitoring.
  • Existing methods for aeroallergen detection can be time-consuming and require complex laboratory procedures.

Purpose of the Study:

  • To develop and validate a novel immunochromatographic method for the direct, qualitative, and quantitative analysis of aeroallergens on sampling filters.
  • To establish a rapid and sensitive technique for identifying and quantifying specific airborne allergens.

Main Methods:

  • Development of an immunochromatographic assay utilizing specific antibodies to detect adsorbed allergens on polytetrafluoroethylene (PTFE) filters.
  • Application of reagents for washing and staining to visualize allergen-specific spots on the filter.

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  • Optimization of reaction time and filter porosity for efficient allergen detection.

    • Main Results:

    • The developed method, Aeroallergen Direct On Sampling (ADOS), provides results within 30-90 minutes.
    • Detection limits were as low as a few picograms for various allergens including birch and grass pollen, mould, and cat allergens.
    • The intensity and number of stained spots correlated with allergen concentration, enabling quantitative analysis.

    Conclusions:

    • The ADOS method offers a rapid, sensitive, and specific approach for on-site aeroallergen determination.
    • This technique simplifies the analysis of airborne allergens, improving the efficiency of environmental monitoring and allergy diagnosis.