わが国の空中スギ・ヒノキ科花粉長期調査 : スギ花粉症の抗原として抗原量・曝露期間の長期観察について  [in Japanese] LONG-TERM STUDY OF AIRBORNE ALLERGIC POLLEN COUNT : C. JAPONICA AND CUPRESSACEAE IN JAPAN  [in Japanese]

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Abstract

1987年から,全国11施設で重力法による空中花粉調査を行ってきた.スギ花粉症患者の抗原曝露について明らかにする目的でスギ,ヒノキ科花粉飛散状況の年次変化について検討した.スギ花粉は日本列島の中央部,ヒノキ科は西日本に多く,両者を併せると浜松市が最も多かった.重力法による花粉飛散開始日はすでに患者が発症している報告があり,初観測日から飛散開始日までも飛散期間とみなした.スギ花粉初捕集日からヒノキ科花粉飛散終了日まで平均約100日間で,飛散量の多い地域ほど期間が長かった.この12年間では各地の花粉捕集量の増加傾向,地球温暖化の影響といわれる飛散開始の早期化は明らかではなかった.秋のスギ花粉が各地で捕集された.1994年以降増加傾向にあり,抗原として無視できないようになった.スギ花粉症・感作率増加原因の一つとして,秋のスギ花粉飛散による年間抗原曝露期間の長期化が示唆された.

We have investigated the distribution of airborne pollen at the different eleven points in Japan from 1987 to 1998 using gravity sampler. To clarify the characteristics causative pollen for Japanese cedar pollinosis, we examined annual change of pollen counts, dispersing period and geographical difference of C. japonica and Cupressaceae pollen. C. japonica pollen occupied much more in Central Japan and Cupressaceae in the west of Japan than the other area. In Hamamatsu City, both of pollen counts were most of all and we found a tendency that the more pollen counts the longer dispersing period. As they reported that at the starting day of pollen in this method some patients had already suffered from allergic symptoms, we considered pollen grains were dispersing in spite of being continuously captured. In these twelve years we found that patients with Japanese pollinosis are exposured by causative agents during about 100 days every spring. But we could not observe the trend of increasing pollen counts and earlier starting day because of global warming. Further more we found that the pollen counts of C. japonica in autumn was increasing since 1994. As one of the factors of increasing patients with pollinosis, we thought that total exposure period of causative pollen every year were longer than thet of 1980 s.

Journal

  • Japanese Journal of Allergology

    Japanese Journal of Allergology 50(4), 369-378, 2001

    Japanese Society of Allergology

References:  37

Cited by:  8

Codes

  • NII Article ID (NAID)
    110002427030
  • NII NACSIS-CAT ID (NCID)
    AN00012583
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0021-4884
  • NDL Article ID
    026086463
  • NDL Call No.
    Z19-32
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
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