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쌀과 저항원성 쌀 및 유전자 재조합 쌀의알레르기 항원성의 비교

Wild Rice, Hypoallergenic Rice, andGMO Rice-Immuologic Comparison

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참고문헌

주제분류소아과학

초록

목 적 : 본 연구에서는 국내산 쌀의 산지와 도정의 정도, 유전자 재조합 여부 및 조리의 형태에 따른 항원성의 변화를 관찰하고 일본에서 생산된 여러 가지 저항원성 쌀의 항원성과 비교해 보고자 하였다. 방 법 : 다양한 쌀을 조항원으로 제조하여 SDS-PAGE를 통해 그 단백분포를 비교하고 알레르기 환자를 대상으로 시행한 CAP test를 토대로 쌀 항원에 감작된 환자의 혈청을 수집하여 immunoblot을 시행하여 특이 IgE 결합능을 비교해 보았다.결 과 : 산지와 도정의 정도에 따른 단백의 분포에는 변화가 없었고 조리 후에는 대부분의 단백이 변성되어 그 분포를 관찰할 수 없었으며 IgE immunoblot의 결과 국내산 일반미와 저항원성 일본산 쌀 사이에는 특이한 IgE 결합능의 차이가 없었다. 순수 쌀과 유전자 재조합 쌀의 Ig E immunoblot의 결과 유의한 차이는 관찰되지 않았다.결 론:다양한 형태의 쌀의 알레르기 항원성을 연구한 결과 다중 식품알레르기 환자의 제한식과 영유아 이유식으로 이용되는 조리된 쌀의 경우 그 항원성이 대부분 소실되는 것을 알 수 있었다. 저항원성 쌀 및 유전자 재조합 쌀의 알레르기 유발성 검증을 위해서는 지속적인 쌀 알레르기 혈청의 수집과 임상 연구가 지속되어야 할 것으로 사료된다.

Abstract

Purpose : Rice is the main cereal produced and consumed in large quantities in Asian countries including Korea. Several reports have suggested a role of IgE-mediated hypersensitivity in asthma and eczema associated with ingestion or inhalation of rice. In Japan, hypoallergenic rices are used as substitutes for rice in some atopic patients. We performed this study to identify major the allergens of rice and the different allergenicity in cooked rice and hypoallergenic rices. Methods : We made crude extracts from rice of various origins : polished rice, cooked rice, hypoallergenic rice from Japan and GMO rice, and performed SDS-PAGE. Based on uni, CAP test and skin prick tests we got pooled sera, then IgE immunoblots were undertaken. We performed ELISA inhibition to rule out nonspecific binding. Results : There was no difference of protein distribution between the origins of the various rices, and their “polishment”. After cooking, it was difficult to see any protein distribution of rice. With the results of IgE immunoblots it was impossible to differentiate between wild and hypoallergenic rices by IgE binding itself. Even in hypoallergenic rice, there was still a binding of IgE with remaining allergen. Conclusion : Boiling degenerates almost all protein in rice IgE binding activities remain in hypoallergenic rice produced in Japan was no difference between wild and GMO rice in SDS-PAGE and IgE immunoblot using sensitized pooled sera. Further studies with more sensitive sera are necessary for the identification of major allergens and the development of hypoallergenic rice.

참고문헌 (20)

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