期刊
INTERNATIONAL ARCHIVES OF ALLERGY AND IMMUNOLOGY
卷 128, 期 2, 页码 165-167出版社
KARGER
DOI: 10.1159/000059407
关键词
allergy; epidemiology; prevalence; Japanese cedar hay fever; pollinosis; IgE; children
Background. Japanese cedar pollinosis is an important allergic rhinoconjunctivitis in Japan in spring. We investigated the relationship between the amount of pollen in the air and the prevalence of the disease and sensitization to Japanese cedar pollen in this ecological study. Methods: The IgE antibody to Japanese cedar pollen (JCP-IgE) was determined in human serum and rhinoconjunctival symptoms were surveyed in 407-510 children in May or June every year from 1995 to 2001. Japanese cedar pollinosis was defined as being JCP-IgE greater than or equal to 1.5 IU/ml and having any rhinoconjunctival symptom lasting 3 weeks or longer in March or April. Results: Prevalence rates of Japanese cedar pollinosis were 13.8-22.9%. Prevalence rates of being JCP-IgE greater than or equal to1.5 IU/ml were 39.0-50.1%, and those of being JCP-IgE : 15.01 IU/ ml were 11.4-23.2%. All prevalence rates were significantly related to the amount of pollen in the air. The proportion of subjects with rhinoconjunctival symptoms was relatively constant in each stratum of low JCP-IgE levels (<0.35, 1.50-2.99, 3.0-14.9 IU/ml). Conclusion: High exposure to Japanese cedar pollen was associated with higher levels of JCP-IgE antibody and a high prevalence of Japanese cedar pollinosis. The relationship between the level of JCP-IgE and the proportion of subjects with symptoms was relatively constant. Copyright (C) 2002 S. Karger AG, Basel.
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