A 90-day Safety Study (Repeated-Dose Oral Toxicity Study) of Genetically Modified ${\beta}$-Carotene Biofortified rice in Sprague-Dawley Rats

SD 랫드에서 베타카로틴강화미의 90일 반복투여 경구독성시험

  • Park, Soo-Jin (Agro-Material Safety Evaluating Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Jeong, Mi-Hye (Agro-Material Safety Evaluating Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Si-Myoung (Biosafety Division, Department of Agricultural Biotechnology, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Mi-Kyoung (Agro-Material Safety Evaluating Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Kyung-Hun (Agro-Material Safety Evaluating Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Jae-Yup (Agro-Material Safety Evaluating Division, Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration)
  • 박수진 (농촌진흥청 국립농업과학원 농산물안전성부 농자재평가과) ;
  • 정미혜 (농촌진흥청 국립농업과학원 농산물안전성부 농자재평가과) ;
  • 이시명 (농촌진흥청 국립농업과학원 농업생명자원부 생물안전성과) ;
  • 김미경 (농촌진흥청 국립농업과학원 농산물안전성부 농자재평가과) ;
  • 박경훈 (농촌진흥청 국립농업과학원 농산물안전성부 농자재평가과) ;
  • 박재읍 (농촌진흥청 국립농업과학원 농산물안전성부 농자재평가과)
  • Received : 2011.08.19
  • Accepted : 2011.09.06
  • Published : 2011.09.30

Abstract

This study was conducted to evaluate the safety of ${\beta}$-carotene biofortified rice, a genetically modified organism (GMO) developed by Rural Development Administration. ${\beta}$-carotene biofortified rice were exposed on Sprague-Dawley rats for 13 weeks. All rats survived until the end of the exposure period. There were no biologically significant differences in body weight, feed and water consumption, weight gains and feed efficiency. There were no clinical signs of toxicity attributable to exposure to GM rice. Mild decreases in AST, ALT, TG levels were observed in Group II (25% GM rice (w/w) and Group III (50% GM rice (w/w), both in females and males. Results of histopathological changes treated with the ${\beta}$-carotene biofortified rice had no significant differences between the control and treatment groups. Based on these results, we deemed that genetically modified ${\beta}$-carotene biofortified rice was as safe as conventional rice.

본 연구는 농촌진흥청에서 개발된 베타카로틴강화미를 Sprague-Dawley rats에 13주동안 투여하여 안전성을 입증 하기 위해 수행되었다. 그 결과, 투여기간동안 모든 동물이 생존했다. 체중, 식이 음수 섭취량 및 식이섭취량에서 대조군과 큰 차이를 보이지 않았다. 베타카로틴강화미의 투여가 독성에 기인하는 임상증상 또한 나타나지 않았다. AST, ALT, TG함량이 베타카로틴강화미 25%투여군과 베타카로틴강화미 50%투여군 암 수컷에서 다소 감소하였다. 또한, 대조군과 베타카로틴강화미 투여군에서 병리조직학적 변화를 나타내지 않았다. 따라서, 베타카로틴강화미는 일반미와 마찬가지로 안전하다고 판단된다.

Keywords

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