Abstract
Purpose: In this study, it was investigated whether commercially produced beer is able to prevent a lymphocyte from radiation induced apoptosis. Materials and Methods: Whole blood samples were acquired from 5 healthy volunteers (male, 26$\sim$38 years old) and the lymphocyte were isolated by density gradient centrifugation. Radiation induced apoptosis of the lymphocyte were investigated by 0.5 Gy, 1.0 Gy, 2.0 Gy, 3.0 Gy to 5.0 Gy irradiation. In some experiments, the donor drunk beer and then blood samples were collected. In other experiments, melatonin or glycine betain was added to lymphocyte culture medium. Treated or untreated lymphocytes were cultured for 60 hours and radiation induced apoptosis of the lymphocyte was analyzed by annexin-V staining through flow cytometery. Results: Relative radiation induced apoptosis ratio of the untreated lymphocytes is 1.22$\pm$1.1, 1.22$\pm$1.1, 1.38$\pm$1.0, 1.47$\pm$1.1, 1.50$\pm$1.2 by radiation dose of 0.5 Gy, 1.0 Gy, 2.0 Gy, 3.0 Gy and 5.0 Gy respectively. Relative radiation induced apoptosis ratio of lymphocytes is isolated from beer drunken donors is 0.97$\pm$1.0, 0.99$\pm$1.0, 1.11$\pm$0.9, 1.29$\pm$1.1, 1.15$\pm$1.1 by radiation doses respectively which are reduced 21.5% compared with untreated lymphocyte. Relative radiation induced apoptosis ratio of the lymphocytes is isolated from non-alcohol beer drunken donors is 1.22$\pm$1.1, 1.17$\pm$1.1, 1.13$\pm$1.3, 1.38$\pm$1.2, 1.32$\pm$1.1 by radiation dose of 0.5 Gy, 1.0 Gy, 2.0 Gy, 3.0 Gy and 5.0 Gy respectively which are reduced 10.8% compared with the untreated lymphocyte. Conclusion: As a result, it is suggested that beer may protect the lymphocyte from radiation damage and inhibit apoptosis.
목 적: 현재 시판되고 있는 맥주(Alcohol 4.5% 이하)를 섭취한 후에 인체가 방사선(X-선)에 노출되었을 경우 방어효과의 가능성여부를 확인하고자 한다. 대상 및 방법: 자원한 건강한 성인남자 5명(26$\sim$38세)으로부터 채취한 8 ml의 말초혈액 임파구세포를 분주하고 선형가속기를 이용하여 0.5 Gy, 1.0 Gy, 2.0 Gy, 3.0 Gy, 5.0 Gy의 방사선을 조사하고 맥주섭취 전과 후, 그리고 미량성분의 첨가후로 나누어 실험하였다. 방사선조사 후 60시간동안 이를 배양하고 세포고사(Apoptosis)된 세포군(Apoptosis group)을 정량적으로 분석하기 위하여 유세포 분석기(Flow cytometry)로 측정하였다. 결 과: 맥주섭취 전에 방사선조사로 유발된 세포고사 세포군(Apoptosis group)과 섭취 후 맥주에 의해서 억제된 세포고사 세포군을 서로 비교하였다. 맥주섭취 전 방사선에 유발된 세포고사(Apoptosis) 세포군(Apoptosis group)비율은 0.5 Gy, 1.0 Gy, 2.0 Gy, 3.0 Gy, 5.0 Gy에서 1.22$\pm$1.1, 1.38$\pm$1.0, 1.47$\pm$1.2, 1.47$\pm$1.1, 1.50$\pm$1.2로 선량에 따라 유의하게 증가하였으며, 맥주섭취 후 세포고사(Apoptosis)가 억제된 세포군(Apoptosis group) 비율은 선량에 따라서 0.97$\pm$1.2, 0.99$\pm$1.0, 1.11$\pm$0.9, 1.29$\pm$1.1, 1.15$\pm$1.1 으로 평균 약 21.4% 감소되었다. 또한 무알콜맥주에서 1.22$\pm$1.1, 1.17$\pm$1.1, 1.13$\pm$1.3, 1.38$\pm$1.2, 1.32$\pm$1.1으로 평균 10.8%로 저하된 것으로 분석되었다. 결 론: 인체가 방사선에 노출되기 전에 적당양의 맥주를 섭취하고 난 뒤에, 방사선에 노출된다면 맥주를 섭취하지 않은 상황에 비하여 방사선(X-선) 대한 방어효과(약 21.4%)가 일어남을 확인하였다.