Comparison of concentrations of Cry j 1 and Cry j 2 in diploid and triploid Japanese cedar (Cryptomeria japonica) pollen extracts

Y. Kondo, H. Ipsen, H. Løwenstein, A. Karpas, L. S. Hsieh

Research output: Contribution to journalShort surveypeer-review

11 Citations (Scopus)

Abstract

Japanese cedar (Cryptomeria japonica) pollinosis has been a serious allergic disease in Japan. There are two kinds of Japanese cedar trees; the popular one is diploid, the less popular is triploid. These trees are not very different morphologically. However, the relative allergenicity of their pollens is unknown, although both major allergens, Cry j 1 and Cry j 2, have been purified and cloned from the diploid line. Triploid trees are sterile and the allergenicity of their pollen may differ. Using Japanese-cedar- allergic patient sera, we compared the concentration of these two major allergens in both kinds of pollen. Pollen collected from different years and regions was also studied. The results indicate that triploid tree pollen extract has lower concentrations of both major allergens; therefore, the pollen may be less allergenic.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalAllergy: European Journal of Allergy and Clinical Immunology
Volume52
Issue number4
DOIs
Publication statusPublished - 1997

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

Fingerprint Dive into the research topics of 'Comparison of concentrations of Cry j 1 and Cry j 2 in diploid and triploid Japanese cedar (Cryptomeria japonica) pollen extracts'. Together they form a unique fingerprint.

Cite this