中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (28): 4518-4524.doi: 10.3969/j.issn.2095-4344.0301

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

深静脉血栓形成模型小鼠沉默信息调节因子1和氧化应激损伤标志物的表达

赵冲宇,王  兵,娄振凯,李兴国,何  卫,赵学凌   

  1. 昆明医科大学第一附属医院,云南省昆明市  650032
  • 收稿日期:2018-02-26 出版日期:2018-10-08 发布日期:2018-10-08
  • 通讯作者: 娄振凯, 博士,主治医师,昆明医科大学第一附属医院,云南省昆明市 650032
  • 作者简介:赵冲宇,男,1992年生,云南省昆明市人,汉族,昆明医科大学在读硕士,主要从事脊柱外科学方面的研究。
  • 基金资助:

    国家自然科学基金项目(81160236,81760029,81760030);云南省卫生科技计划项目(2014NS142,2017NS022,2016NS021,2017NS021);昆明医科大学第一附属医院 博士科研基金项目(2017BS030)

Expression levels of SIRT1 and oxidative stress injury markers in a mouse model of deep venous thrombosis

Zhao Chong-yu, Wang Bing, Lou Zhen-kai, Li Xing-guo, He Wei, Zhao Xue-ling   

  1. First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • Received:2018-02-26 Online:2018-10-08 Published:2018-10-08
  • Contact: Lou Zhen-kai, MD, Attending physician, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • About author:Zhao Chong-yu, Master candidate, First Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81160236, 81760029 and 81760030; the Health Science and Technology Program of Yunnan Province, No. 2014NS142, 2017NS022, 2016NS021 and 2017NS021; the Doctoral Research Project of First Affiliated Hospital of Kunming Medical University, No. 2017BS030

摘要:

文章快速阅读:

文题释义:
沉默信息调节因子1:是生物体的遗传信息单位,经过DNA复制,将遗传信息准确传递至沉默子,是负性调节元件,当与特异蛋白因子结合时,对基因转录起到阻遏作用。文章中沉默信息调节因子1可通过抑制肿瘤坏死因子α 介导的炎性反应改善内皮细胞功能,修复内皮细胞损伤,减少动脉血栓形成。
氧化应激:是指体内氧化与抗氧化作用失衡,倾向于氧化,导致炎症细胞炎性浸润,蛋白酶分泌增加,产生大量氧化中间产物。氧化应激是由自由基在体内产生的一种负面作用,并被认为是导致衰老和疾病的一个重要因素。氧自由基包括超氧阴离子(•O2-)、羟自由基(•OH)和过氧化氢(H2O2)等;RNS包括一氧化氮(•NO)、二氧化氮(•NO2)和过氧化亚硝酸盐(•ONOO-)等。
摘要
背景
:研究表明,沉默信息调节因子1(silent information regulator 1,SIRT1)对氧化应激有抑制作用,降低动脉血栓形成。而SIRT1和氧化应激损伤在静脉血栓中的变化仍不清楚。
目的:进一步分析SIRT1和氧化应激损伤与小鼠深静脉血栓形成的关系。
方法:把90只的C57型小鼠按体质量随机分为3组:空白组(n=30),假手术组(n=30),深静脉血栓形成组(n=30)。深静脉血栓形成组用下腔静脉狭窄法制备深静脉血栓形成动物模型,24 h后获取小鼠下腔静脉组织。苏木精-伊红染色法观察血栓情况;DCFH-DA荧光探针捕获、流式细胞仪检测静脉组织中活性氧的含量。并测得超氧化物歧化酶和丙二醛的量;用Western blot法检测SIRT1蛋白的表达。
结果与结论:①在深静脉血栓形成组里静脉壁中活性氧含量显著多于空白组和假手术组(P < 0.05);②深静脉血栓形成组静脉壁组织超氧化物歧化酶的量显著低于空白组和假手术组,而丙二醛含量显著高于空白组和假手术组(P < 0.05);③深静脉血栓形成组SIRT1表达显著低于空白组和假手术组(P < 0.05);④结果提示:氧化应激损伤能促进深静脉血栓形成的发生发展,深静脉血栓形成中SIRT1的活性被抑制。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0001-9657-4911(赵冲宇)

关键词: 深静脉血栓, 静脉内皮细胞, 氧化应激损伤, 沉默信息调节因子1, 国家自然科学基金

Abstract:

BACKGROUND: Silent information regulator1 (SIRT1) has been shown to inhibit oxidative stress and reduce arterial thrombosis. But changes in SIRT1 expression and oxidative stress in venous thrombosis remain unclear.
OBJECTIVE: To further analyze the correlation of SIRT1 and oxidative stress in deep venous thrombosis.
METHODS: Ninety C57 mice were randomized into three groups based on body mass: control, sham operation and model groups (n=30 per group). The mouse model of deep venous thrombosis was created by inferior vena cava stenosis, and the inferior vena cava tissues were gained at 24 hours after modeling. The thrombosis was observed by hematoxylin-eosin staining; the content of reactive oxygen species was assayed by membrane permeable fluorescent probe DCFH-DA and flow cytometry; contents of superoxide dismutase and malondialdehyde were tested; SIRT1 protein expression was detected by western blot assay.
RESULTS AND CONCLUSION: Compared with the control and sham operation groups, in the modeling group, the contents of reactive oxygen species and malondialdehyde were significantly increased, and the level of superoxide dismutase was significantly decreased (P < 0.05). The expression level of SIRT1 in the modeling group was significantly lower than that in the control and modeling groups (P < 0.05). In summary, oxidative stress plays a significant part in the germination and growth of deep venous thrombosis, and the activity of SITR1 is inhibited during deep venous thrombosis formation.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Venous Thrombosis, Models, Animal, Oxidative Stress, Superoxide Dismutase, Malondialdehyde, Tissue Engineering

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