实验动物科学 ›› 2023, Vol. 40 ›› Issue (1): 50-54.DOI: 10. 3969 / j. issn. 1006-6179. 2023. 01. 009

• 论著 • 上一篇    下一篇

衰老对裸鼹鼠肝组织的影响

  

  1. (海军军医大学基础医学院实验动物学教研室,上海 200433)
  • 收稿日期:2022-02-21 出版日期:2023-02-28 发布日期:2023-03-15
  • 通讯作者: 崔淑芳( 1968—) ,女, 教授,研究方向: 实验动物资源开发与疾病动物模型研究. E-mail: youngstar_sf@ 163. com
  • 作者简介:张成财( 1992—) ,男,硕士研究生,研究方向:动物学. E-mail: zhangchengcai_06@ 163. com
  • 基金资助:
    上海市“科技创新行动计划”实验动物研究领域项目( 20140900100) 

Effects of Aging on Liver Tissue in Naked Mole Rats

  1. (Department of Laboratory Animal Science, School of Basic Medical Sciences, Naval Medical University, Shanghai 200433, China)
  • Received:2022-02-21 Online:2023-02-28 Published:2023-03-15

摘要: 目的 通过选取不同年龄段的裸鼹鼠,比较肝组织在衰老进程中的变化。 方法 选取幼年裸鼹鼠( 2 年龄) 、中年裸鼹鼠(10 年龄) 、老年裸鼹鼠(20 年龄) ,采集血液,分离血清,检测肝功能 4 项。 采集肝,测定肝指数。 制作石蜡切片,经 HE 染色和 Masson 染色后,光学显微镜下观察肝组织形态结构。 采用动物组织生化检测试剂盒检测肝组织丙二醛(MDA) 、总抗氧化能力( T-AOC)和氧化型谷胱甘肽(GSSG)水平。 结果 与幼年组裸鼹鼠比较,中年组和老年组裸鼹鼠肝指数、血清天冬氨酸氨基转移酶(AST) 、丙氨酸氨基转移酶(ALT) 、碱性磷酸酶(ALP) 和白蛋白(ALB)水平均无显著差异(P>0. 05) 。 HE 染色及 Masson 染色结果均显示各组裸鼹鼠肝组织结构完整,无病理变化。 中年组裸鼹鼠肝组织中的 MDA、T-AOC 水平无显著差异(P>0. 05) ,老年组裸鼹鼠肝组织中的 MDA、T-AOC 水平显著升高(P<0. 05) ,两组裸鼹鼠肝组织 GSSG 水平均无显著差异( P> 0. 05) 。 结论 裸鼹鼠肝组织在衰老进程中表现出一定程度的抗衰老能力,具体抗衰老机制有待深一步研究。

关键词: 裸鼹鼠, 肝, 衰老

Abstract: Objective To compare the changes of liver tissue in the aging process of naked mole rats at different ages. Method Young naked mole rats (2 years old) , middle-aged naked mole rats (10 years old) and old naked mole rats ( 20 years old ) were selected. Blood was collected, serum was separated and liver function was measured. The liver was collected and the liver index was measured. Paraffin sections were prepared, and the liver tissue was observed under light microscope after HE staining and Masson staining. The levels of malondialdehyde (MDA) , total antioxidant capacity ( T-AOC) and oxidized glutathione (GSSG) in liver tissues were detected by animal tissue biochemical assay kit. Result There were no significant differences in liver index, serum levels of aspartate aminotransferase ( AST) , alanine aminotransferase ( ALT) , alkaline phosphatase ( ALP ) and albumin (ALB) between the middle-aged group and the old group compared with the young group (P>0. 05) . The result of HE staining and Masson staining showed that the liver tissue structure of naked mole rats in each group was intact without pathological changes. The levels of MDA and T-AOC in liver tissue of naked mole rats in middle age group had no significant difference (P>0. 05) , but the levels of MDA and T-AOC in liver tissue of naked mole rats in old age group were significantly increased (P<0. 05) , and the levels of GSSG in liver tissue of naked mole rats in two groups had no significant difference (P>0. 05) . Conclusion The liver tissue of naked mole rats shows anti-aging ability to a certain extent, and the specific anti-aging mechanism needs to be further studied.

Key words: naked mole rats, liver, aging

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