中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (11): 1741-1746.doi: 10.12307/2022.360

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

微创清除术联合二甲双胍对家兔脑出血炎症反应的影响

徐  林1,齐宏顺2,葛汝村1,李培培1,甄丽晓1,冯肖亚2   

  1. 山东省立第三医院,1转化医学研究中心,2神经内科,山东省济南市   250031
  • 收稿日期:2021-03-24 修回日期:2021-03-30 接受日期:2021-05-28 出版日期:2022-04-18 发布日期:2021-12-11
  • 通讯作者: 冯肖亚,硕士,副主任医师,山东省立第三医院,山东省济南市 250031
  • 作者简介:徐林,女,1982年生,山东省新泰市人,汉族,2010年山东第一医科大学(山东省医学科学院)毕业,硕士,主要从事动物实验基础研究。
  • 基金资助:
    山东省医药卫生科技发展计划项目(2017WS204),项目负责人:冯肖亚

Effects of minimally invasive surgery combined with metformin on inflammatory responses in rabbits with intracerebral hemorrhage

Xu Lin1, Qi Hongshun2, Ge Rucun1, Li Peipei1, Zhen Lixiao1, Feng Xiaoya2   

  1. 1Translational Medicine Research Center, 2Department of Neurology, Shandong Provincial Third Hospital, Jinan 250031, Shandong Province, China 
  • Received:2021-03-24 Revised:2021-03-30 Accepted:2021-05-28 Online:2022-04-18 Published:2021-12-11
  • Contact: Feng Xiaoya, Master, Associate chief physician, Department of Neurology, Shandong Provincial Third Hospital, Jinan 250031, Shandong Province, China
  • About author:Xu Lin, Master, Translational Medicine Research Center, Shandong Provincial Third Hospital, Jinan 250031, Shandong Province, China
  • Supported by:
    Shandong Provincial Medicine and Health Science and Technology Development Project, No. 2017WS204 (to FXY)

摘要:

文题释义:
脑出血:是指非创伤性脑实质内血管破裂引起的出血。脑出血的症状与出血的部位、出血量、出血速度、血肿大小以及患者的一般情况等有关,早期死亡率很高,幸存者中多数留有不同程度的运动障碍、认知障碍、言语吞咽障碍等后遗症。
炎症反应:是机体对各种致炎因素引起损害而产生的一种基本病理过程,也是许多疾病的重要组成部分。炎症时局部有红、肿、热、痛和功能障碍,同时常伴有发热、白细胞增多等全身反应。以上变化和症状的出现与炎症时体内神经、体液和组织因素的改变有关,特别与炎症化学递质和炎症细胞有关。

背景:课题组前期研究结果表明微创清除术联合二甲双胍能够减轻脑出血后继发性损害,改善预后,但其具体机制尚不明确。
目的:观察微创清除术联合二甲双胍对脑出血模型家兔血肿周围脑组织炎症反应的影响,并探讨其具体作用机制。
方法:将48只雄性新西兰兔随机分成假手术组、脑出血组、微创清除术组、微创清除+二甲双胍治疗组。除假手术组外,其余各组兔按照参考文献Sawyer定位法制作脑出血模型。脑出血组兔进行假性血肿清除;微创清除术组和微创清除+二甲双胍治疗组兔在造模成功后6 h进行微创清除,后者并于清创术后给予二甲双胍灌胃(50 mg/kg),每日1次;其余各组给予等量生理盐水灌胃,连续灌胃3 d。于治疗后第3天对各组兔进行神经功能缺损(Purdy)评分;检测脑含水量;血脑屏障通透性检测伊文思蓝含量;ELISA检测血清肿瘤坏死因子α、白细胞介素1β水平;免疫组化和Western Blot检测脑组织Toll样受体4、 基质金属蛋白酶9和核因子κB蛋白的表达。实验方案经山东省立第三医院实验动物伦理委员会批准(批准号为DWKYLL-2017001)。
结果与结论:①与脑出血组相比,微创清除术组和微创清除+二甲双胍治疗组家兔Purdy评分、脑含水量、伊文思蓝含量均明显降低(P < 0.05),血清肿瘤坏死因子α、白细胞介素1β水平均降低(P < 0.05),脑组织Toll样受体4、基质金属蛋白酶9和核因子κB蛋白的表达均明显减少(P < 0.05);微创清除+二甲双胍治疗组家兔上述指标降低更明显;②结果表明,微创清除术联合二甲双胍可能通过抑制Toll样受体4/核因子κB信号通路减轻脑出血家兔的炎症反应,改善脑出血家兔的神经功能。
缩略语:Toll样受体4:Toll-like receptor 4,TLR4

https://orcid.org/0000-0002-3656-6845 (徐林) 

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: 微创清除术, 二甲双胍, 脑出血, 炎症反应, toll样受体4, 核转录因子κB

Abstract: BACKGROUND: Our preliminary results have shown that minimally invasive surgery combined with metformin can reduce secondary damage after cerebral hemorrhage and improve the prognosis. However the specific mechanism is still unclear.
OBJECTIVE: To observe the effect of minimally invasive surgery combined with metformin on the inflammatory responses of brain tissue around hematoma in a rabbit model of intracerebral hemorrhage, and to explore its specific mechanism.
METHODS: Forty-eight male New Zealand rabbits were randomly divided into sham operation group (sham group), intracerebral hemorrhage group (ICH group), minimally invasive surgery group (MIS group), and minimally invasive surgery combined with metformin treatment group (MIS+MET group). Animal models of intracerebral hemorrhage were established using Sawyer’s method in the latter three groups. Pseudohematoma removal surgery was performed in the ICH group, and minimal invasive surgery was performed in the MIS group and MIS+MET group 6 hours after successful modeling. Metformin (50 mg/kg) was administered by gavage to the rabbits in the MIS+MET group once a day for 3 continuous days, and the rabbits in the MIS and ICH groups were given the same amount of normal saline. Neurological deficit (Purdy) score was performed 3 days after treatment. The content of brain water and Evans blue were detected. The expression of tumor necrosis factor-α and interleukin-1β in serum was detected by ELISA. The expressions of Toll-like receptor 4, matrix metalloproteinase 9 and nuclear factor κB proteins in brain tissue were detected by immunohistochemistry and western blot. An ethical approval was obtained from the Experimental Animal Ethics Committee of Shandong Provincial Third Hospital (approval No. DWKYLL-2017001). 
RESULTS AND CONCLUSION: Compared with the ICH group, Purdy score, brain water content and Evans blue content were significantly decreased in the MIS group and MIS+Met group (P < 0.05), the expression levels of tumor necrosis factor-α and interleukin-1β in serum were decreased (P < 0.05), and the expression of Toll-like receptor 4, matrix metalloproteinase 9 and nuclear factor κB proteins in brain tissue were significantly decreased (P < 0.05). The above indexes were decreased more obviously in the MIS+MET group. These findings indicate that minimally invasive surgery combined with metformin could reduce the inflammatory response and improve the neurological function of rabbits with intracerebral hemorrhage by inhibiting Toll-like receptor 4/nuclear factor κB signaling pathway.

Key words: minimally invasive surgery, metformin, intracerebral hemorrhage, inflammatory response, Toll-like receptor 4, nuclear factor κB

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