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The purity of allergenic extracts
Developments in Biological Standardization
|January 1, 1975
Summary
Allergenic extracts often contain impurities, such as pollens or mites, which can trigger allergic reactions. Ensuring the purity of these extracts is crucial for accurate allergy diagnosis and treatment.
Area of Science:
- Immunology
- Allergology
Background:
- The purity of allergenic extracts is often assumed but is critical for accurate diagnosis.
- Trace impurities in allergen preparations can significantly contribute to clinical symptoms.
Purpose of the Study:
- To investigate the prevalence and impact of contamination in commonly used allergenic extracts.
- To highlight the challenges in producing immunologically pure allergenic materials.
Main Methods:
- Demonstration of contamination through skin testing.
- Analysis of common allergenic sources like animal dander, pollens, and mite cultures.
Main Results:
- Commercial extracts frequently exhibit gross contamination with other allergens.
- Examples include pollen contamination in animal dander extracts and vice versa.
- Mite extracts can be contaminated with fish or animal proteins, and pollen extracts with other pollens or fungal spores.
Conclusions:
- Producing immunologically pure allergenic extracts is challenging.
- Widespread contamination in allergenic extracts necessitates careful consideration in clinical practice and research.
