Related Experiment Videos
Multiple pollen sensitization: a molecular approach to the diagnosis
1Allergy Unit, National Health Service, Rome, Italy. a.mari@panservice.it
International Archives of Allergy and Immunology
|June 1, 2001
Summary
Multiple pollen sensitization in allergy patients is often due to panallergen exposure, not just multiple pollen species. Identifying IgE to specific allergenic molecules helps diagnose and manage respiratory allergies effectively.
Area of Science:
- Immunology
- Allergology
- Respiratory Medicine
Background:
- Multiple pollen sensitization is a common challenge in allergy diagnosis.
- Panallergens, highly homologous allergenic molecules, are found across different pollen families.
- Understanding panallergen sensitization is key to diagnosing complex allergies.
Purpose of the Study:
- To establish criteria for identifying multiple pollen sensitization.
- To find specific markers for this condition.
- To correlate panallergen sensitization with allergic respiratory diseases.
Main Methods:
- Skin testing with 23 pollens was performed on patients with allergic respiratory disease.
- Patients were classified based on predefined criteria for multiple pollen sensitization.
- IgE testing for specific panallergens (rBet v 2, rJun o 2) and non-panallergens (rBet v 1, rPhl p 5, bromelain) was conducted.
Main Results:
- 17% of pollen-sensitized patients met criteria for multiple pollen sensitization.
- 55% of the multiple sensitization group showed IgE positivity to rBet v 2, and 15% to rJun o 2.
- IgE to rBet v 1 and rPhl p 5 was positive across subgroups; clinical features differed based on IgE reactivity.
Conclusions:
- Allergy diagnosis in multiple pollen sensitization cases requires focus on allergenic molecules (panallergens).
- Sensitization to panallergens, rather than multiple pollen species, drives this condition.
- Detecting IgE to non-panallergens aids in identifying specific allergenic sources and understanding clinical manifestations like asthma and oral allergy syndrome.