AI Article Synopsis
- The study assessed oral allergy syndrome (OAS) in Japanese patients with pollen allergies, finding that 4.1% of pollen-sensitized individuals were diagnosed with OAS.
- The research revealed strong correlations between OAS prevalence and sensitization to alder pollen, particularly for foods like apple, peach, and melon.
- Overall, the findings suggest that pollen from the Betulaceae family, especially alder, plays a significant role in causing OAS among patients in Japan.
Article Abstract
Background: The clinical features of patients with oral allergy syndrome (OAS) due to plant-derived foods related to pollen allergy have been rarely reported in Japan.
Objectives: To evaluate the characteristics of OAS and to investigate whether pollen sensitizations are correlated with the prevalence of OAS in Japan.
Methods: We measured specific IgE antibodies against 5 pollens in 622 outpatients (277 males and 345 females; mean age, 37 years) with atopic dermatitis, urticaria, angioedema, and food allergy during a 2-year period. Furthermore, OAS is diagnosed based on anamnesis and positive skin prick test reactions to suspected foods.
Results: Eighteen of the 436 patients (4.1%) sensitized to pollens were diagnosed as having OAS. Rates of specific IgE antibody-positive responses against Japanese cedar, ragweed, orchard grass, mugwort, and alder pollen were 69.8%, 35.3%, 29.1%, 24.1%, and 19.6%, respectively. The prevalence of OAS showed a significant positive correlation with sensitization to alder (P < .001). In addition, the most frequent causative foods were found to be apple, peach, and melon. The prevalence of OAS due to apple showed a significant positive correlation with sensitization to alder (P < .001) pollen, due to peach showed a significant positive correlation with sensitization to alder (P < .001) and orchard grass (P < .05) pollen, and due to melon showed a significant positive correlation with sensitization to alder (P < .005), orchard grass (P < .05), and ragweed (P < .05) pollen.
Conclusion: Sensitization to pollens from species in the Betulaceae family is most strongly implicated in causing OAS in Japan.
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| http://dx.doi.org/10.1016/j.anai.2009.11.049 | DOI Listing |
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