LOCAL DIFFERENCES OF ORAL ALLERGY SYNDROME WITH POLLINOSIS : A COMPARISON BETWEEN HANSHINKAN AND HIGASHIHARIMA IN SOUTH HYOGO

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  • Adachi Atsuko
    Department of Dermatology, Hyogo Prefectural Kakogawa Hospital
  • Horikawa Tatsuya
    Division of Dermatology, Department of Clinical Molecular Medicine, Kobe University Graduate School of Medicine

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Other Title
  • 花粉症に伴う口腔アレルギー症候群の地域差について : 兵庫県南部における阪神間と東播磨との比較
  • カフンショウ ニ トモナウ コウクウ アレルギー ショウコウグン ノ チイキサ ニ ツイテ ヒョウゴケン ナンブ ニ オケル ハンシン カン ト ヒガシハリマ ト ノ ヒカク

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Abstract

Background: A number of cases of oral allergy syndrome (OAS) to fruits with birch pollinosis have been described. The antigen of Alnus sieboldiana (alder) trees which are massively planted on Rokko Mountain appeared to be highly similar to birch pollen. Methods: We took the medical history of pollinosis and OAS, measured pollen-specific IgE (CAP-RAST) and performed prick tests of causative fruits to the outpatients of the two hospitals in different areas. Result: In Hanshinkan district, at the foot of Rokko Mountain, we experienced 9 cases of OAS among 377 outpatients. All 9 cases had alder specific-IgE. The prevalence rate of OAS was 11.0% in the alder specific-IgE-positive patients and 0% in the alder specific-IgE-negative patients in the area. On the other hand, in Higashiharima district where less alder trees exist and further from Rokko Mountain, 19 OAS patients were documented among 2000 outpatients. Six of the 19 patients with OAS did not have alder specific-IgE. The prevalence rate of OAS was 6.8% in the alder specific-IgE-positive patients and 11.8% in the mugwort specific-IgE-positive patients in the area. Conclusion: In Hanshinkan, alder pollinosis seems to be most important for the cross reactivity to the OAS. In Higashiharima, mugwort pollinosis may be more important than alder pollinosis for the cross reactivity to the OAS.

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