文章摘要

远志皂苷元对急性脑出血大鼠海马神经元的保护作用

作者: 1胡莉芸, 2谭佳颖, 2朱会耕, 2宫晔, 2祝禾辰, 2吴钢
1 复旦大学附属华山医院护理部,上海 200040
2 复旦大学附属华山医院危重病科,上海 200040
通讯: 吴钢 Email: wugang_med@163.com
DOI: 10.3978/j.issn.2095-6959.2018.06.001

摘要

目的:研究远志皂苷元(Senegenin)对急性脑出血(Intracerebral hemorrhage,ICH)大鼠海马神经元的保护作用及其机制。方法:实验共分为假手术组、模型组、远志皂苷元低剂量组和远志皂苷元高剂量组,向脑组织注入自体动脉血建立急性ICH大鼠模型,分别给予远志皂苷元低、高剂量组6和12 mg/kg远志皂苷元,对各组大鼠进行神经功能缺损评分,称重法测量脑组织的含水量,尼氏染色检测脑血肿周围的海马CA1区神经元细胞大小和细胞堆积密度,Tunel染色检测脑血肿周围的海马CA1区组织细胞凋亡数,Western印迹法检测脑血肿周围海马CA1区组织Bax,Bcl-1,TGF-β1与VEGF蛋白表达水平。结果:与模型组相比,远志皂苷元低、高剂量组大鼠的神经功能缺损评分显著降低;脑组织含水量显著下降;脑血肿周围的海马神经元尼氏体的体积变大,数量减少;脑血肿周围的海马CA1区细胞凋亡数显著减少,Bax蛋白表达水平明显降低,而Bcl-2,TGF-β1与VEGF蛋白表达水平明显增加。结论:远志皂苷元对ICH大鼠海马神经元具有保护作用,可能与减轻脑水肿和调控Bax,Bcl-2,TGF-β1与VEGF蛋白表达水平有关。
关键词: 急性脑出血;远志皂苷元;海马神经元

Protective effects of Senegenin on hippocampal neurons in acute intracerebral hemorrhage rats

Authors: 1HU Liyun, 2TAN Jiaying, 2ZHU Huigeng, 2GONG Ye, 2ZHU Hechen, 2WU Gang
1 Department of Nursing, Huashan Hospital, Fudan University, Shanghai 200040, China
2 Department of Emergency, Huashan Hospital, Fudan University, Shanghai 200040, China

CorrespondingAuthor: WU Gang Email: wugang_med@163.com

DOI: 10.3978/j.issn.2095-6959.2018.06.001

Abstract

Objective: To investigate the protective effects and the possible mechanisms of Senegenin on hippocampal neurons in rats with acute intracerebral hemorrhage (ICH). Methods: Rats were randomly divided into a sham group, a model group, a low dose Senegenin treatment group and a high dose Senegenin treatment group. ICH rat model was established by injection of autologous blood, and ICH rats were administrated with 6 or 12 mg/kg of Senegenin. The impairment of neural function was scored. The water content of brain was measured. The cell size and cell-packing density of hippocampal CA1 region around the hematoma were determined by Nissl’s staining. The apoptosis of hippocampal CA1 region tissue around the hematoma was analyzed by TUNEL staining. The protein expressions of Bax, Bcl-2 TGF-β1 and VEGF of hippocampal CA1 region tissue around the hematoma were detected by Western blot. Results: Compared with the model group, the scores of neural function impairment were significantly decreased and the brain water content after the treatment with low or high dose of Senegenin were decreased, cell apoptosis of hippocampal CA1 region around the hematoma was inhibited, cell-packing density of hippocampal CA1 region around the hematoma was reduced, cell size of hippocampal CA1 region around the hematoma was increased. Furthermore, the protein expression of Bax was obviously decreased, whereas Bcl-2 TGF-β1 and VEGF protein expression were increased in hippocampal CA1 region around the hematoma. Conclusion: Senegenin improves neural function in ICH rats, which may be associated with reducing cerebral edema and regulation of Bax, Bcl-2 TGF-β1 and VEGF protein expression.
Keywords: acute intracerebral hemorrhage; Senegenin; hippocampal neurons

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