PMID: 9188931Apr 1, 1997Paper

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

Allergy
Y KondoL S Hsieh

Abstract

Japanese cedar (Cryptomeria japonica) possibilities 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 22, 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.

Citations

Jul 31, 2004·Current Allergy and Asthma Reports·Nadine Mothes, Rudolf Valenta
Apr 26, 2002·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·Y KondoT Matsuda
Feb 24, 2005·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·T FujimuraK Ono
Oct 5, 2015·Allergology International : Official Journal of the Japanese Society of Allergology·Takafumi NumataRyoji Tsuboi
Oct 5, 2015·Allergology International : Official Journal of the Japanese Society of Allergology·Takashi Fujimura, Seiji Kawamoto
Dec 8, 2004·International Archives of Allergy and Immunology·Nadine MothesRudolf Valenta
Sep 7, 2016·International Journal of Molecular Sciences·Xiao-Ling ZhangJian-Jun Hu

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