癌变·畸变·突变 ›› 2007, Vol. 19 ›› Issue (6): 491-493.doi: 10.3969/j.issn.1004-616x.2007.06.017

• 论著 • 上一篇    下一篇

辐射致急性小鼠衰老模型的建立

杨薛康/ 海春旭/ 梁 欣/ 赵海龙/ 柏 桦   

  1. 第四军医大学军事预防医学系毒理学教研室,陕西 西安 710033
  • 收稿日期:2006-11-22 修回日期:2007-03-20 出版日期:2007-11-30 发布日期:2007-11-30
  • 通讯作者: 海春旭

Establishment of an Acute Aging Model in Mice Induced by γ-ray Irradiation

YANG Xue-kang, HAI Chun-xu, LIANG Xin, ZHAO Hai-long, BAI Hua   

  1. Department of Toxicology,the Fourth Military Medical University,Xi'an 710033,China
  • Received:2006-11-22 Revised:2007-03-20 Online:2007-11-30 Published:2007-11-30
  • Contact: HAI Chun-xu

摘要: 背景与目的: 探讨一种简便的γ射线照射致小鼠衰老模型。 材料与方法: 将45 只小鼠随机分成3组:对照组和2个模型组,对照组正常饲养,2个模型组分别给予不同剂量的γ射线照射。50 d后观察血常规、胸腺指数、脾脏指数、超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、脂褐素含量、β-半乳糖苷酶染色结果。 结果: 与对照组相比,2个模型组的血常规相关指标、胸腺指数和脾脏指数和SOD活性均降低(P<0.05);MDA含量和脂褐素含量升高(P<0.05);β-半乳糖苷酶染色呈阳性改变。 结论: 采用γ射线照射建立急性小鼠衰老模型的方法可行。

关键词: 衰老, 自由基, 模型

Abstract: BACKGROUND & AIM: To establish a convenient acute aging model by γ-ray irradiation. MATERIALS AND METHODS: 45 mice were divided into 3 groups:the control group,the model 1 group irradiated by 3 Gy×8 times and the model 2 group irradiated by 6 Gy×4 times. Complete blood count, thymus weight index,spleen weight index, activity of SOD,the contents of MDA and lipofuscin were determined.The expression of β-galactosidase was evaluated by staining at the end of 50 days experiment. RESULTS: Compared with control group, the complete blood count,thymus weight index and spleen weight index all decreased(P<0.05),the activity of SOD also decreased(P<0.05),but the contents of MDA and lipofuscin were increased(P<0.05).The β-galactosidase activity of hepatic cells was enhanced in the aging mice model.CONCLUSION:The acute aging model by γ-ray irradiation was successfully established, and it was a feasible method.

Key words: aging, free radical, model

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