Abstract
Inhalation of olive pollen is a major cause of allergic respiratory diseases in Mediterranean region. Using bags attached to the branches, pollens were collected from 36 olive cultivars grown in Jordan just before bloom. Proteins were extracted from pollens and analysed by SDS-PAGE and immunoblotting using antisera collected from patients with history of olive pollen-allergy. Immunoblot results showed that 25 cultivars contained one or two allergenic proteins in the range of 15–72 kDa with majority of the proteins corresponding to 15–20 kDa, while remainders did not exhibit any allergenic protein. Seven cultivars exhibited three allergenic proteins and only two cultivars exhibited four allergenic proteins and thus, were considered potentially hyperallergenic cultivars. This study highlights the great variability in the antigenic and allergenic composition of Olea europaea pollen extracts which may serve as guidance for selecting the olive tree cultivars that could be planted in urban areas.
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