ALLERGENIC ACTIVITY OF NON-CALCINATED EGG SHELL CALCIUM

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  • 卵殻未焼成カルシウムのアレルゲン性について
  • ランカク ミショウセイ カルシウム ノ アレルゲンセイ ニ ツイテ

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Abstract

Background : There is few data to prove the safety of egg shell calcium as allergen. Especially , noncalcinated egg shell calcium is not allowed to use without the description of origin of egg on food labels in Japan. Method : We evaluated the possibly contaminated egg allergens in commercial non-calcinated egg shell calcium made from egg by in vitro methodologies (SDS-PAGE, western blotting, inhibition ELISA and sandwich ELISA) and by single-blind oral non-calcinated egg shell calcium challenge on 6 egg hypersensitivity patients. Resuts : The allergenic activity of non-calcinated egg shell calcium was almost negligible compared to egg white by all in vitro methods. Furthermore, six patients with egg hypersensitivity were unresponsive to oral non-calcinated egg shell calcium challenge test. Conclusion : These results indicate that there is little contamination of egg white in non-calcinated egg shell calcium, and that the allergenic activity of non-calcinated egg shell calcium is equivalent to that of calcinated egg shell calcium.

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