中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (14): 2139-2145.doi: 10.12307/2023.117

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

芸香苷改善大鼠椎间盘退变的机制

许大勇,李云朋,魏景梅,刘汝银   

  1. 河南省中医院脊柱外科,河南省郑州市  450000
  • 收稿日期:2022-02-24 接受日期:2022-04-29 出版日期:2023-05-18 发布日期:2022-09-30
  • 作者简介:许大勇,男,1973年生,河南省人,汉族,2006年河南省中医药大学毕业,硕士,副主任医师,主要从事脊柱脊髓疾病的诊治研究。
  • 基金资助:
    河南省中医药拔尖人才培养项目资助课题(2019ZYBJ18),项目负责人:刘汝银

Rutin attenuates the progression of intervertebral disc degeneration in rats

Xu Dayong, Li Yunpeng, Wei Jingmei, Liu Ruyin   

  1. Department of Spine Surgery, Henan Hospital of Traditional Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Received:2022-02-24 Accepted:2022-04-29 Online:2023-05-18 Published:2022-09-30
  • About author:Xu Dayong, Master, Associate chief physician, Department of Spine Surgery, Henan Hospital of Traditional Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Supported by:
    the Henan Provincial Project for Traditional Chinese Medicine Top-notch Talents Training, No. 2019ZYBJ18 (to LRY)

摘要:

文题释义:
椎间盘退变:椎间盘退变的发病过程较为复杂,涉及多个生物学过程,如衰老、过度的机械负荷、发生炎症等。炎症是退行性级联反应中的传递信使,与正常椎间盘相比,退变的组织中会产生大量的炎症因子。
芸香苷:研究显示类黄酮还具有阻断细胞周期、诱导细胞凋亡、破坏有丝分裂纺锤体形成的能力,使其在药物开发领域具有广阔的应用前景。芸香苷(Rutin),又名芦丁,是类黄酮的一种,广泛存在于荞麦、茶叶、苹果等植物中,具有抗氧化、抗炎、抗细胞凋亡、血管保护、神经保护和心脏保护等药理活性,可用于治疗癌症、糖尿病、高血压和高胆固醇血症等多种疾病。

背景:芸香苷具有抗氧化、抗炎、抗细胞凋亡、血管保护、神经保护和心脏保护等药理活性,可用于治疗癌症、糖尿病、高血压和高胆固醇血症等多种疾病,但其在椎间盘退变性疾病中的研究较少。
目的:探究芸香苷对大鼠椎间盘退变的调控和作用机制。
方法:①从大鼠髓核组织中分离获得髓核细胞,之后用芸香苷(10,50,100,200,400 μmol/L)和白细胞介素1β(10 μg/L)处理髓核细胞,检测细胞活性、炎症因子和氧化应激因子的表达以及细胞代谢酶的生成、基质降解和细胞凋亡的情况;之后加入WNT/β-catenin 通路激活剂R-spondin1处理髓核细胞,检测β-catenin、c-Myc和Cyclin D1表达。②36只SD大鼠随机选取其中26只,用针刺纤维环构建椎间盘退变模型,1周后通过磁共振成像(MRI)进行评估,其余10只为假手术组做对照。建模成功的大鼠随机分为椎间盘退变模型组和芸香苷组,芸香苷组大鼠使用40 mg/kg芸香苷灌胃处理8周,模型组和假手术组大鼠用等量的生理盐水处理。Pfirrmann分级系统评定椎间盘退变程度;ELISA检测各组大鼠血清中白细胞介素6,胶原Ⅱ浓度和caspase-3活性;Western blotting检测各组大鼠髓核组织中聚集蛋白聚糖和诱导型一氧化氮合酶的蛋白表达水平。
结果与结论:①细胞实验:100 μmol/L芸香苷能够完全缓解白细胞介素1β造成的髓核细胞毒性,抑制白细胞介素6、肿瘤坏死因子α、环氧化酶2、诱导型一氧化氮合酶、基质金属蛋白酶3、13和ADAMTS-5表达,抑制胶原Ⅱ、聚集蛋白聚糖降解和细胞凋亡,R-spondin1能逆转芸香苷的作用;②体内研究发现,与椎间盘退变模型组相比,芸香苷组的大鼠血清中白细胞介素6 质量浓度降低,胶原Ⅱ质量浓度升高,caspase-3活性降低,髓核组织中诱导型一氧化氮合酶蛋白水平下调,聚集蛋白聚糖蛋白水平升高,椎间盘退变有明显的改善;③结果说明,芸香苷通过抗炎、抗氧化和抑制基质降解改善大鼠的椎间盘退变。

https://orcid.org/0000-0002-7172-508X(许大勇)

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

关键词: 椎间盘退变, 芸香苷, 抗氧化, 抗炎, WNT/β-catenin信号通路

Abstract: BACKGROUND: Rutin has various pharmacological activities including anti-oxidant, anti-inflammatory, anti-apoptotic, vasoprotective, neuroprotective, and cardioprotective properties, which can be used to treat diseases such as cancer, diabetes, hypertension, and hypercholesterolemia. However, it has been less studied in the treatment of intervertebral disc degenerative diseases. 
OBJECTIVE: To investigate the regulatory effect of rutin on intervertebral disc degeneration in rats and its mechanism.
METHODS: Nucleus pulposus cells were isolated from the postnatal rat nucleus pulposus tissue and then treated with rutin (10, 50, 100, 200, or 400 μmol/L) and interleukin-1β (10 μg/L). Cell viability and expression of inflammatory factor and oxidative stress factors were detected. Production of cellular metabolic enzymes, matrix degradation, and cell apoptosis were also observed. Furthermore, treatment of nucleus pulposus cells with R-spondin1, a WNT/β-catenin pathway activator, and the expression of β-catenin, c-Myc, and Cyclin D1 were detected. The 26 out of 36 Sprague-Dawley rats were randomly selected, to construct animal models of intervertebral disc degeneration using a needle fiber loop. One week later, the model was evaluated by magnetic resonance imaging. The rest 10 rats were used as controls. Rats with successful modeling were randomly divided into a model group and a rutin group. Rats in the rutin group were intragastrically treated with 40 mg/kg rutin for 8 weeks, while those in the model group were treated with an equal volume of normal saline. The Pfirrmann grading system was used to grade the degree of intervertebral disc degeneration. The serum levels of interleukin-6, type II collagen and caspase-3 were detected using ELISA. The protein levels of Aggrecan and inducible nitric oxide synthase in rat nucleus pulposus tissue were measured using western blot assay. 
RESULTS AND CONCLUSION: (1) Cell experiment: 100 μmol/L rutin completely alleviated the toxicity of interleukin-1β to nucleus pulposus cells, decreased the expression of interleukin-6, tumor necrosis factor-α, cyclooxyganese-2, inducible nitric oxide synthase, matrix metalloproteinases-3, 9, 13, and ADAMTS-5, inhibited the degradation of type II collagen and Aggrecan, and reduced apoptosis in nucleus pulposus cells. Whereas, treatment with R-spondin1 could reverse the effects of rutin. (2) In vivo experiments showed that compared with the model group, treatment with rutin decreased interleukin-6 level, increased type II collagen level, decreased caspase-3 activity, downregulated inducible nitric oxide synthase level in nucleus pulposus tissue, and upregulated Aggrecan level, indicating an obvious improvement in intervertebral disc degeneration. To conclude, rutin could improve intervertebral disc degeneration in rats through anti-inflammation, anti-oxidation, and inhibition of matrix degradation. 

Key words: intervertebral disc degeneration, rutin, anti-oxidation, anti-inflammation, the WNT/β-catenin pathway

中图分类号: