实验动物与比较医学 ›› 2020, Vol. 40 ›› Issue (6): 519-522.DOI: 10.3969/j.issn.1674-5817.2020.06.009

• 裸鼹鼠研究专题 • 上一篇    下一篇

60Co γ射线辐射对裸鼹鼠脾脏的影响

杨蓉1, 赵懿宁2, 杨文静1, 赵善民1, 柴宇静2, 张成财1, 袁征3#, 崔淑芳1#   

  1. 1.海军军医大学基础医学院实验动物学教研室,上海 200433;
    2.上海市杨浦区精神卫生中心医技科,上海 200090;
    3.军事科学院军事医学研究院实验动物中心,北京 100071
  • 收稿日期:2020-10-10 出版日期:2020-12-25 发布日期:2020-12-30
  • 作者简介:杨 蓉(1990-), 女, 硕士, 助理实验师, 主要从 事实验动物学教学及研究工作.E-mail: 664710222@qq.com
  • 基金资助:
    国家青年自然科学基金(31700923); 上海市“科技创新行动计划”实验动物研究领域项目 (20140900100)

Effect of 60Co γ-ray Radiation on Spleen of Naked Mole Rats

YANG Rong1, ZHAO Yining2, YANG Wenjing1, ZHAO Shanming1, CHAI Yujing2, ZHANG Chengcai1, YUAN Zheng3#, CUI Shufang1#   

  1. 1. Department of Laboratory Animal Science, School of Basic Medical Sciences,Naval Medical University, Shanghai 200433, China;
    2. Department of Medical Technology,Yangpu District Mental Health Center, Shanghai 200090, China;
    3. Laboratory Animal Center,Academy of Military Medical Sciences, Beijing 100071, China
  • Received:2020-10-10 Online:2020-12-25 Published:2020-12-30

摘要: 目的 观察60Co γ-射线辐射后裸鼹鼠脾脏免疫系统及组织生物化学指标的变化,初步了解裸鼹鼠脾脏辐射耐受特性。方法 用辐照剂量率为1.163 Gy/min,总剂量为10 Gy的60Coγ-射线对裸鼹鼠全身一次性辐射。采集正常对照及辐照后7 d、14 d和21 d的裸鼹鼠脾脏,流式细胞术检测脾脏B淋巴细胞和巨噬细胞比例。采用动物组织生化检测试剂盒检测脾脏组织丙二醛(MDA)、总抗氧化能力(T-AOC)、谷胱甘肽(GSH)和氧化型谷胱甘肽(GSSG)等指标。结果 流式细胞术检测结果显示,辐照后B淋巴细胞比例及巨噬细胞比例均明显升高(P< 0.01)。生化检测结果显示,辐照后脾脏MDA水平明显升高(P<0.05);GSH和GSSH逐渐明显降低(P<0.05);辐照后 T-AOC水平明显降低(P<0.01),但辐照后21 d有所上升,明显高于辐照后7 d和14 d(均P<0.01)。结论 裸鼹鼠脾脏对60Co γ-射线具有一定程度的耐受能力,但其耐受机制尚未明确。

关键词: 裸鼹鼠, 辐射耐受性, 脾脏, 免疫, 60Co ?射线

Abstract: Objective To observe the changes of immune system and tissue biochemical indexes in the spleen of naked mole rats exposed to 60Co γ-ray radiation, for probing the radiation tolerance characteristics of the spleen of naked mole rats. Methods The whole body of naked mole rats was irradiated with a radiation dose rate of 1.163 Gy/min and a total dose of 10 Gy 60Co γ-rays. The spleens of the normal control and the exposed naked mole rats after 7 d, 14 d, and 21 d of irradiation were collected. The proportions of B lymphocytes and macrophages in the spleens were measured by flow cytometry. Malondialdehyde (MDA), total antioxidative capacity (T-AOC), glutathione (GSH) and oxidative glutathione (GSSG) in the spleen tissues were measured with corresponding biochemical assay kits. Results Flow cytometry results showed that the numbers of both B lymphocyte and macrophages increased significantly after irradiation (P<0.001). Biochemical examination results showed that the MDA level in spleen was significantly increased (P<0.05) after irradiation, the GSH and GSSH levels were significantly decreased (P<0.05), the T-AOC level was first significantly decreased (P<0.01) and then raised 21 days after irradiation, which was significantly higher than the indexes 7 days and 14 days after irradiation (P<0.01). Conclusion The spleens of naked mole rats can tolerate 60Co γ-ray radiation to some extent, but the mechanism of tolerance is not clear.

Key words: Naked mole rats, Radiation tolerance, Spleen, Immunology, 60Co ?-rays

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