Journal of Radiation Protection and Research
- Volume 23 Issue 2
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- Pages.83-88
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- 1998
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- 2508-1888(pISSN)
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- 2466-2461(eISSN)
The Distribution of $^{14}C-chitosan$ by Different Molecular Weight in Mice
마우스에서 $^{14}C-chitosan$ 분자량별 체내 분포에 관한 연구
- Kim, Kwang-Yoon (Department of Nuclear Medicine, Chonnam University Hospital) ;
- Kim, Young-Ho (Department of Nuclear Medicine, Chonnam University Hospital) ;
- Kim, Hee-Kyung (Department of Food Science and Technology, Pukyong University) ;
- Bom, Hee-Seung (Department of Nuclear Medicine, Chonnam University Hospital) ;
- Kim, Ji-Yeul (Department of Nuclear Medicine, Chonnam University Hospital) ;
- Roh, Young-Bok (Department of Biology, College of Natural Sciences, Chosun University) ;
- Nishimura, Yoshikazu (Department or Environmental Health, National Institute of Radiological Sciences)
- 김광윤 (전남대학교병원 핵의학과) ;
- 김영호 (전남대학교병원 핵의학과) ;
- 김희경 (부경대학교 식품공학과) ;
- 범희승 (전남대학교병원 핵의학과) ;
- 김지열 (전남대학교병원 핵의학과) ;
- 노영복 (조선대학교 생물학과) ;
- 요시카즈 니시무라 (일본방사선의학총합연구소)
- Published : 1998.06.30
Abstract
Chitosan is a nontoxic natural chealtor which was made by chitin, and reduced a contamination of radiostrontium in animals. In this experiment, A different molecular weight of C-14 chitosan was intravenously administered to mice, and then the distribution of C-14 chitosan in the body was observed. Male mice (8 to 10 weeks, body weight of 30 to 35g) of ICR strain were used. C-14 chitosan was diluted with saline and then given intravenously in mice. After the administration of C-14 chitosan, mice was sacrificed at the 6th hour, 1st, 3rd, 5th, and 7th day. Beta radioactivities in the blood, liver, kidney, liver, muscle, testis, and urine was measured using a liquid scintillation analyzer. Most of the C-14 chitosan was excreted through urine within 6 hours. Biodistribution of C-14 chitosan was similar despite the difference of moleclar weight. Higher distributions of radioactivities were found in the liver, kidney, spleen. The relative concentration in tissue increased for the 6 hours and then decreased. In conclusion, most of C-14 chitosan was excreted through urine despite the difference of molecular weight. and, low molecular weight of C-14 chitosan showed higher distribution than high molecular weight of C-14 chitosan in tissues.
키토산은 키틴의 탈아세틸화반응을 통해서 얻어진 유전적 독성이 없는 천연착화제로써 방사성동위원소 혹은 중금속 이온의 제거제 및 체내 흡수 억제제로 알려져 왔다. 본 연구에서는 분자량이 다른 C-14 chitosan을 정맥투여 한 후 C-14 chitosan 분자량별 마우스 체내 대사과정을 알아보고자 하였다 ICR계 웅성 마우스(8-10주령, 체중 30-35g)를 사용하였다. C-14 chitosan은 증류수로 희석한 다음, 꼬리정맥을 통해 정맥 투여하였다. C-14 chitosan 투여후 6시간, 1일, 3일, 5일, 7일째 마우스를 희생시켜 혈액, 간, 신장, 비장, 폐, 근육, 고환, 오줌을 채취하였으며, 각각의