杜仲叶浸提物对碳离子束致小鼠急性损伤的防护作用

研究杜仲叶浸提物对碳离子束辐照小鼠急性损伤的防护效应及其可能机制。小鼠灌胃不同剂量杜仲叶浸提物7d后,6Gy^12C^6+束全身均匀辐照,照射后12h处死小鼠,取其肝、肺组织,分别用黄嘌呤氧化酶法和硫代巴比妥酸法(TBA法)检测组织中的SOD活性和MDA含量;用中性单细胞凝胶电泳技术(亦称彗星试验)检测组织细胞的DNA损伤;并用流式细胞术检测组织细胞的凋亡率。和单纯辐照组相比,预先灌服不同剂量的杜仲叶浸提物,能有效抑制重离子束辐照引起的小鼠肺和肝组织SOD活性降低和MDA含量提高;同时,还能使辐照小鼠肺和肝组织细胞的拖尾率、拖尾长度和细胞凋亡率显著降低,且有剂量效应关系。杜仲叶浸提物能显著减轻...

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Published in辐射研究与辐射工艺学报 Vol. 31; no. 4; pp. 7 - 12
Main Author 武振华 金雪莲 杨荣 王新宇 刘阳 王小虎 刘斌 王振华 牛炳韬 赵卫平 张红
Format Journal Article
LanguageChinese
Published 甘肃省重离子束辐射医学应用基础重点实验室 兰州730000 2013
中国科学院重离子束辐射生物医学重点实验室 兰州730000
兰州大学 兰州730000
中国科学院近代物理研究所 兰州730000
甘肃省重离子束辐射医学应用基础重点实验室 兰州730000%兰州大学附属第二医院 兰州730000%甘肃省肿瘤医院 兰州730050%兰州大学 兰州730000%中国科学院近代物理研究所 兰州730000
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ISSN1000-3436

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Summary:研究杜仲叶浸提物对碳离子束辐照小鼠急性损伤的防护效应及其可能机制。小鼠灌胃不同剂量杜仲叶浸提物7d后,6Gy^12C^6+束全身均匀辐照,照射后12h处死小鼠,取其肝、肺组织,分别用黄嘌呤氧化酶法和硫代巴比妥酸法(TBA法)检测组织中的SOD活性和MDA含量;用中性单细胞凝胶电泳技术(亦称彗星试验)检测组织细胞的DNA损伤;并用流式细胞术检测组织细胞的凋亡率。和单纯辐照组相比,预先灌服不同剂量的杜仲叶浸提物,能有效抑制重离子束辐照引起的小鼠肺和肝组织SOD活性降低和MDA含量提高;同时,还能使辐照小鼠肺和肝组织细胞的拖尾率、拖尾长度和细胞凋亡率显著降低,且有剂量效应关系。杜仲叶浸提物能显著减轻肝肺细胞DNA损伤和凋亡,推测这与其显著消除自由基作用有关。
Bibliography:Eucommia ulmoides, 12C6+, Radio-resistance, Mice
31-1258/TL
The aim of this study was to explore the protective effects and possible mechanism of Eucommia ulmoides Oliver leaves extraction on acute injury induced by carbon ion beams in mice. The Kun-Ming mice were fed orally with crude extracts of Eucommia ulmoides Oliver leaves in various doses for 7 days, whole bodys were then irradiated with 6Gy 12C6+ ions, the liver and lung tissues of mice were collected at 12 h after irradiation. The activity of superoxide dismutase (SOD) and the content of Malondiadehyde (MDA) in liver and lung tissues were detected by the xanthine oxidase method and the thiobarbituric acid (TBA) reaction chromometry, respectively. Meanwhile, the DNA injury was determined by single cell gel electrophoresis (SCGE, comet assay) and the apoptosis was assayed by flow cytometry method. The results showed that there were dose-related significant decreases in MDA level, percentages of apoptosis cell, tail moment rate of cells and tail length in
ISSN:1000-3436