Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Genotoxicity Study of Litsea japonica Fruit Flesh Extract

까마귀쪽나무열매추출물의 유전독성 평가

  • Received : 2017.11.01
  • Accepted : 2018.05.08
  • Published : 2018.06.30
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Abstract

This study aimed to evaluate the genotoxicity of Litsea japonica fruit-hexane extract (LJF-HE). In order to examine the genotoxicity, we carried out bacterial reverse mutation assay, chromosome aberration assay, and a micronucleus induction (MN) test according to the OECD and the Korea Ministry of Food and Drug Safety (MFDS) toxicity test guidelines. In the bacterial reverse mutation assay, no significant increase in revertant colonies, nor bacterial toxicity, was observed in the LJF-HE treatment group, regardless of the absence or presence of metabolic activation by the S9 mixture. However, in the positive control group, revertant colony counts were shown to be more than twice that of the negative control group. The chromosome aberration test showed that the repetition rate of abnormal chromosome aberration was less than 5%, regardless of the treatment time, and with or without the S9 mixture. No significant change was observed when (p < 0.05) compared with the negative control group. The micronucleated polychromatic erythrocytes (MNPCE) repetition rate of the polychromatic erythrocytes (PCE) showed no significant changes when compared with the negative control group (p < 0.05). The PCE portion of total erythrocytes also showed no significant changes (p < 0.05). These results showed that LJF-HE had no significant genotoxic effects.

본 연구는 까마귀쪽나무열매추출물(LJF-HE)의 유전독성을 평가하고자 하였다. 유전독성연구는 OECD와 MFDS(Korea Ministry of Food and Drug Safety) 지침에 따라 복귀돌연변이시험, 염색체이상시험, 마우스 골수세포를 이용한 소핵시험을 실시하였다. 세균을 이용한 복귀돌연변이시험은 까마귀쪽나무열매추출물(LJF-HE) 처리군에서 S9 mix 존재유무에 상관없이 복귀돌연변이 콜로니 수는 음성 대조군과 비교하였을 때 증가 양상을 나타내지 않은 반면에 양성 대조물질에서 유발된 복귀돌연변이 콜로니 수는 대사활성계 미적용(S9-) 및 적용(S9+)의 모든 시험 균주에 대하여 음성(용매)대조 값의 2배를 넘어 증가한 것으로 나타났다. 염색체 이상 시험에서 까마귀쪽나무열매추출물(LJF-HE) 처리군에서 모든 세포주의 처리시간 및 S9 mix 존재유무에 상관없이 5%미만의 비정상적인 염색체이상을 나타내었으나, 음성대조군에 비해 유의적인 변화는 없었다. 소핵시험은 까마귀쪽나무열매추출물(LJF-HE) 처리군에서 음성 대조군과 비교하여 소핵을 가진 다염성 적혈구의 증가는 볼 수 없었으며 통계학적인 유의성도 나타나지 않았다. 상기의 결과를 종합하면 까마귀쪽나무열매추출물(LJF-HE)은 유전독성을 유발하지 않는 것으로 판단되어진다.

Keywords

References

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