中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (36): 5813-5818.doi: 10.3969/j.issn.2095-4344.2014.36.013

• 器官移植动物模型 organ transplantation and animal model • 上一篇    下一篇

虎纹捕鸟蛛毒素对脑缺血模型大鼠海马肿瘤坏死因子凋亡通路的影响

王一蓉1,2,毛海峰1,3,陈嘉勤1   

  1. 1湖南师范大学体育学院,湖南省长沙市  410012
    2湖南体育职业学院,湖南省长沙市  410019
    3江西宜春学院,江西省宜春市  336000
  • 修回日期:2014-06-19 出版日期:2014-08-30 发布日期:2014-08-30
  • 通讯作者: 陈嘉勤,教授,湖南师范大学体育学院,湖南省长沙市 410012
  • 作者简介:王一蓉,女,1982年生,湖南省长沙市人,汉族,2007年湖南师范大学毕业,硕士,主要从事运动生物化学的研究。
  • 基金资助:

    国家自然科学基金(30671085);湖南省科技厅(27040236)共同资助课题

Effects of huwentoxin on tumor necrosis factor apoptotic pathway in the hippocampus of a rat model of cerebral ischemia

Wang Yi-rong1, 2, Mao Hai-feng1, 3, Chen Jia-qin1   

  1. 1Institute of Physical Education, Hunan Normal University, Changsha 410012, Hunan Province, China
    2Hunan Sports Vocational College, Changsha 410019, Hunan Province, China
    3Yichun University, Yichun 336000, Jiangxi Province, China
  • Revised:2014-06-19 Online:2014-08-30 Published:2014-08-30
  • Contact: Chen Jia-qin, Professor, Institute of Physical Education, Hunan Normal University, Changsha 410012, Hunan Province, China
  • About author:Wang Yi-rong, Master, Institute of Physical Education, Hunan Normal University, Changsha 410012, Hunan Province, China; Hunan Sports Vocational College, Changsha 410019, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30671085; the Hunan Provincial Science and Technology Department Project, No. 27040236

摘要:

背景:虎纹捕鸟蛛毒素经离子通道分析技术证明是一种作用于突触前膜的N型钙离子通道阻断剂。
目的:观察新型钙通道拮抗剂虎纹捕鸟蛛毒素对全脑缺血再灌注损伤模型大鼠海马组织肿瘤坏死因子凋亡通路中肿瘤坏死因子α、肿瘤坏死因子受体Ⅰ、肿瘤坏死因子受体相关死亡结构域、Fas相关死亡结构域蛋白、Caspase 8表达的影响。
方法:采用Pulsinelli“四血管阻断法”构建全脑缺血结合蛛网膜下腔置管大鼠模型,通过留置的PE10管注入虎纹捕鸟蛛毒素或生理盐水。应用电镜、RT-PCR实验技术检测全脑缺血再灌注损伤大鼠海马CA1区锥体细胞超微结构和胞内线粒体形态变化及对海马组织中肿瘤坏死因子α、肿瘤坏死因子受体Ⅰ、肿瘤坏死因子受体相关死亡结构域、Fas相关死亡结构域蛋白、Caspase 8等肿瘤坏死因子凋亡通路相关因子基因表达。
结果与结论:虎纹捕鸟蛛毒素能维持全脑缺血再灌注脑损伤大鼠线粒体基本形态且能不同程度降低肿瘤坏死因子凋亡通路中促凋亡因子肿瘤坏死因子α、肿瘤坏死因子受体Ⅰ、肿瘤坏死因子受体相关死亡结构域、Fas相关死亡结构域蛋白、Caspase 8 mRNA表达。提示天然活性多肽虎纹捕鸟蛛毒素作为一种新型N-型电压依赖性钙通道阻断剂,能有效阻断胞外Ca2+的大量内流,使细胞内游离钙降低,减少由于细胞内钙超载而引起的一系列病理损害,从而保护神经细胞,减轻缺血缺氧海马神经细胞的损伤。



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

关键词: 实验动物, 组织构建, 虎纹捕鸟蛛毒素, 全脑缺血再灌注, 脑缺血模型大鼠, 肿瘤坏死因子α, 肿瘤坏死因子受体Ⅰ, 肿瘤坏死因子受体相关死亡结构域, Fas相关死亡结构域蛋白, Caspase 8, 国家自然科学基金

Abstract:

BACKGROUND: Ion channel analytical technique has verified that huwentoxin is an N-type Ca2+ channel blocker affecting on presynaptic membrane.
OBJECTIVE: To observe the effects of N-type Ca2+ channel blocker huwentoxin on expressions of tumor necrosis factor α, tumor necrosis factor receptor I, tumor necrosis factor receptor-related death domain, Fas-related death domain protein and Caspase 8 in the hippocampi of rat models of global cerebral ischemia reperfusion injury.
METHODS: Rat models of global cerebral ischemia and subarachnoid catheter were established using Pulsinelli 4-vessel occlusion and then received infusion of huwentoxin or normal saline via a PE10 tube. Morphological changes in the mitochondria and ultrastructure of pyramidal neurons in the hippocampal CA1 region of rats with global cerebral ischemia reperfusion injury were observed using electron microscope. The expressions of tumor necrosis factor α, tumor necrosis factor receptor I, tumor necrosis factor receptor-related death domain, Fas-related death domain protein and Caspase 8 were measured using RT-PCR.
RESULTS AND CONCLUSION: Huwentoxin could maintain the basic morphology of mitochondria of rats with global cerebral ischemia reperfusion injury and decrease the expressions of tumor necrosis factor α, tumor necrosis factor receptor I, tumor necrosis factor receptor-related death domain, Fas-related death domain protein and Caspase 8 mRNA. Results suggested that huwentoxin as a novel N-type Ca2+ channel blocker could block extracellular Ca2+ influx, reduce intracellular Ca2+ concentration, diminish a series of pathological lesion induced by intracellular Ca2+ overload, protect nerve cells, and lessen the injury to nerve cells of hippocampus after ischemia and hypoxia.



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

Key words: reperfusion injury, tumor necrosis factor-alpha, receptor, tumor necrosis factor, type I, caspase 8

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