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  • Title: [A study of aggravation of atopic dermatitis during Japanese cedar pollen season--correlation with grades of dermatitis on face and Cry j 1 specific IgE].
    Author: Aihara M, Takahashi S, Oosuna I, Yasueda H, Tsubaki K, Ikezawa Z.
    Journal: Arerugi; 1999 Oct; 48(10):1172-9. PubMed ID: 10554404.
    Abstract:
    We studied influence of Japanese cedar pollen (Jcp) on aggravation of atopic dermatitis (AD) during the pollination season. 48.5% of 97 patients with atopic dermatitis showed aggravation of dermatitis during the pollination season and 85% of them had Japanese cedar pollinosis, whereas only 44% of AD patients without the aggravation had the pollinosis. There was no difference of grades of dermatitis on face between the groups with or without the aggravation. Furthermore, we measured specific IgE to Jcp and Cry j 1, a major allergen of Jcp, by ELISA in the sera from the 54 patients with AD. The levels of specific IgE antibodies to both allergens in the group with the pollinosis were significantly higher than in the group without the pollinosis. However, significant difference of those was not recognized between the groups with or without the aggravation of AD. Therefore, our study has suggested that Japanese cedar pollen is likely to be one of causes of seasonal aggravation of AD in individuals sensitized to the pollen, and some other factors, e.g. Jcp-specific T cells, might play an important roll in addition to the Jcp-specific IgE.
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