中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (32): 5203-5208.doi: 10.3969/j.issn.2095-4344.0385

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

淫羊藿苷干预自然衰老模型大鼠大脑皮质趋化因子Fractalkine及其受体CX3CR1的表达

张  欣1,康增军2,薛  娟1,张  顺3,刘小青4,刘未华1   

  1. 1河北大学医学院,河北省保定市  071000;河北大学附属医院,2神经内科, 3病理科,河北省保定市  071000;4保定市第一中心医院神经外科,河北省保定市  071000
  • 收稿日期:2018-07-10 出版日期:2018-11-18 发布日期:2018-11-18
  • 通讯作者: 康增军,副主任医师,硕士生导师,河北大学附属医院神经内科,河北省保定市 071000
  • 作者简介:张欣,女,1992年生,甘肃省天水市人,汉族,河北大学医学院在读硕士,主要从事神经药理学研究。 并列第一作者:康增军,男,1979年生,河北省保定市人,汉族,副主任医师,硕士生导师,主要从事脑血管疾病的研究与诊断。
  • 基金资助:


    河北省科技计划项目(132777188);深圳市科技计划项目(JCYJ201504011163247219)

Icariin affects the expression of fractalkine and its receptor CX3CR1 in cerebral cortex of natural aging rat models

Zhang Xin1, Kang Zeng-jun2, Xue Juan1, Zhang Shun3, Liu Xiao-qing4, Liu Wei-hua1   

  1. 1Medical College of Hebei University, Baoding 071000, Hebei Province, China; 2Department of Neurology, 3Department of Pathology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China; 4Department of Neurosurgery, Baoding No.1 Central Hospital, Baoding 071000, Hebei Province, China
  • Received:2018-07-10 Online:2018-11-18 Published:2018-11-18
  • Contact: Kang Zeng-jun, Department of Neurology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China
  • About author:Zhang Xin, Master candidate, Medical College of Hebei University, Baoding 071000, Hebei Province, China Kang Zeng-jun, Associate chief physician, Master’s supervisor, Department of Neurology, Affiliated Hospital of Hebei University, Baoding 071000, Hebei Province, China Zhang Xin and Kang Zeng-jun contributed equally to this work.
  • Supported by:

    the Science and Technology Program of Hebei Province, No. 132777188; the Science and Technology Program of Shenzhen, No. JCYJ201504011163247219

摘要:

文章快速阅读:

文题释义:
淫羊藿苷:为箭叶淫羊藿、柔毛淫羊藿、巫山淫羊藿巫,朝鲜淫羊藿等干燥茎叶提取物。该品呈淡黄色针状结晶粉末,相对分子质量为676.65。淫羊藿苷能增加心脑血管血流量、促进造血功能、免疫功能及骨代谢,还具有补肾壮阳、抗衰老等功效。
趋化因子(chemokines):是指能够吸引白细胞移行到感染部位的一些低相对分子质量(多为8 000-10 000)的蛋白质(如白细胞介素8、MCP-1等),在炎症反应中具有重要作用。趋化因子的主要作用是趋化细胞的迁移,细胞沿着趋化因子浓度增加的信号向趋化因子源处迁徙。有些趋化因子在免疫监视过程中控制免疫细胞趋化,如诱导淋巴细胞到淋巴结,这些淋巴结中的趋化因子通过与这些组织中的抗原提呈细胞相互作用而监视病原体的入侵,被称为稳态趋化因子,其产生无需刺激而分泌。有些趋化因子在发育中起作用,能刺激新血管形成,提供具体的关键信号而促成细胞成熟;其他趋化因子可以因应对细菌感染、病毒感染由多种细胞释放;也可以因非感染性的刺激如二氧化硅吸入,尿路结石等而释放;趋化因子的释放还可刺激释放炎症细胞因子如白细胞介素1,炎性趋化因子的主要作用是趋化白细胞(如单核粒细胞和中性粒细胞)从血循环到感染或组织损伤部位;有的趋化因子也可以促进伤口愈合。
摘要
背景:
趋化因子Fractalkine(FKN)不仅涉及到趋化、黏附和炎症反应,在脑组织中也参与神经细胞的增殖和凋亡。
目的:观察淫羊藿苷对自然衰老大鼠大脑皮质趋化因子Fractalkine及其受体CX3CR1的影响。
方法:选用3月龄雄性SD大鼠80只,随机分为4组:青年组、自然衰老组、淫羊藿苷低剂量组、淫羊藿苷高剂量组。淫羊藿苷组从16月龄开始分别灌胃淫羊藿苷30,60 mg/kg,连续60 d,青年组和自然衰老组灌胃等量生理盐水60 d至取材前。采用苏木精-伊红染色法观察大鼠脑组织形态学变化;β-半乳糖苷酶染色测定脑组织衰老情况;免疫组织化学检测皮质趋化因子Fractalkine和CX3CR1的表达;酶联免疫吸附法检测脑组织中白细胞介素6和肿瘤坏死因子α水平;免疫印迹检测脑组织Caspase-3蛋白表达,比色法检测Caspase-3活性。
结果与结论:①自然衰老组趋化因子Fractalkine表达明显低于青年组,CX3CR1表达、Caspase-3表达及活性、SA-β-gal阳性颗粒数、炎性指标白细胞介素6、肿瘤坏死因子α明显高于青年组;而淫羊藿苷用药后能逆转上述现象,且淫羊藿苷高剂量组好于淫羊藿苷低剂量组;②结果提示淫羊藿苷能够低脑组织中的炎性因子水平,抑制神经细胞凋亡,可能与影响趋化因子Fractalkine及CX3CR1表达有关。

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: 0000-0002-8975-4938(张欣)

关键词: 淫羊藿苷, 自然衰老, 趋化因子Fractalkine, CX3CR1, 白细胞介素6, 肿瘤坏死因子, 组织构建

Abstract:

BACKGROUND: Chemokine fractalkine not only involves chemotaxis, adhesion, and inflammation, but also participates in the proliferation and apoptosis of nerve cells in brain tissue.
OBJECTIVE: To observe the effect of icariin on the expression of fractalkine and its receptor CX3CR1 in cerebral cortex of natural aging rats.
METHODS: Eighty 3-month-old male Sprague-Dawley rats were randomly divided into four groups: young group, natural aging group, low- and high-dose icariin groups. Rats in the young and natural aging groups were intragastrically administered equal amount of normal saline for 60 days. Starting from 16 months old, rats in the drug groups were given 30 and 60 mg/kg icraiin for 60 days. Pathological changes in brain morphology were observed by hematoxylin-eosin staining. Brain senescence was identified by β-galactosidase staining. The expression of fractalkine and CX3CR1 was detected by immunohistochemistry. The levels of interleukin 6 and tumor necrotic factor α were tested by ELISA. The expression and activity of caspase-3 was determined by western blot assay and colorimetry, respectively.
RESULTS AND CONCLUSION: The expression level of fractalkine in the natural aging group was significantly lower than that in the young group. The expression of CX3CR1, the expression and activity of caspase-3, the number of positive particles of SA-β-gal, and the levels of interleukin 6 and tumor necrotic factor α in the natural aging group were significantly higher than those in the young group. After administration of icariin especially at high doses, the above phenomena were reversed. These results suggest that icariin can reduce the levels of inflammatory factors and inhibit apoptosis, which may be via regulating the expression of fractalkine and its receptor CX3CR1.

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: Epimedium, Aging, Chemotactic Factors, Caspase 3, Tissue Engineering

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