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脑震宁颗粒调节三重脑震荡大鼠线粒体能量代谢的机制研究
Δ
高 丽 ,赵 乐,魏楠楠,武立雅,王恬恬,张唯依,王永辉(山西中医药大学基础医学院,山西 晋中 030619)
*
#
中图分类号 R965;R285.5 文献标志码 A 文章编号 1001-0408(2024)09-1050-07
DOI 10.6039/j.issn.1001-0408.2024.09.05
摘 要 目的 探究脑震宁颗粒调节三重脑震荡(MCC)模型大鼠海马组织线粒体能量代谢的作用机制。方法 取SPF级Wistar大
鼠,通过“自由落体撞击法”制备MCC模型。将造模成功的大鼠分为模型组、吡拉西坦组和脑震宁颗粒低、中、高剂量组,另设正常
组,每组8只。各给药组大鼠按吡拉西坦组0.324 g/kg,脑震宁颗粒低、中、高剂量组2.25、4.5、9 g/kg的剂量灌服相应药物,正常组
和模型组给予等体积生理盐水,每天 1 次,连续 14 d。检测大鼠运动探索能力和学习记忆能力;检测大鼠海马组织三磷酸腺苷
(ATP)含量;观察大鼠海马组织线粒体结构变化;检测大鼠海马组织线粒体动力蛋白相关蛋白 1(Drp1)、线粒体裂变蛋白1(Fis1)、
线粒体融合蛋白1(Mfn1)、视神经萎缩蛋白1(Opa1)的荧光强度;检测大鼠海马组织过氧化物酶体增殖物激活受体γ共激活因子
1α(PGC-1α)、核呼吸因子1(NRF-1)、线粒体转录因子A(TFAM)、Wnt-3a、β-连环蛋白(β-catenin)的蛋白表达水平。结果 与正常
组比较,模型组大鼠的运动总路程、中央格进入次数、直立次数,新物体识别指数,海马组织线粒体ATP含量,Mfn1、Opa1的荧光强
度及PGC-1α、NRF-1、TFAM、Wnt-3a、β-catenin蛋白表达水平均显著降低(P<0.01),静止时间和海马组织Drp1、Fis1的荧光强度
均显著升高(P<0.01);透射电镜结果显示,海马组织线粒体明显肿胀,嵴大量断裂、减少,部分线粒体膜内髓样变。与模型组比
较,各给药组大鼠以上指标水平/含量均有不同程度的逆转,大部分差异有统计学意义(P<0.05或P<0.01);透射电镜结果显示,
海马组织线粒体肿胀程度减轻,嵴少量断裂、减少,粗面内质网局部区域模糊断裂。结论 脑震宁颗粒可以提高MCC模型大鼠的
运动探索和学习记忆能力,修复神经元损伤,发挥神经保护作用;其机制可能与激活Wnt/β-catenin信号通路,维持线粒体融合分裂
平衡,促进线粒体生物合成相关。
关键词 脑震宁颗粒;三重脑震荡;线粒体;Wnt/β-catenin信号通路;海马组织;神经保护
Mechanism of Naozhenning granules in regulating mitochondrial energy metabolism in multiple cerebral
concussion rats
GAO Li,ZHAO Le,WEI Nannan,WU Liya,WANG Tiantian,ZHANG Weiyi,WANG Yonghui(Basic Medical
College, Shanxi University of Chinese Medicine, Shanxi Jinzhong 030619, China)
ABSTRACT OBJECTIVE To explore the mechanism of Naozhenning granules in regulating mitochondrial energy metabolism in
hippocampal tissue of multiple cerebral concussion (MCC) model rats. METHODS SPF grade Wistar rats were used to prepare
MCC models using the “free fall impact method”. The successfully modeled rats were divided into model group, piracetam group,
and Naozhenning granule low-dose, medium-dose and high-dose groups, and a normal group was also set up, with 8 rats in each
group. Rats in each treatment group orally administered corresponding drugs at doses of 0.324 g/kg for the piracetam group and
2.25, 4.5 and 9 g/kg for the Naozhenning granule low-dose, medium-dose and high-dose groups; the normal group and model
group were given equal volumes of normal saline; once a day, for 14 consecutive days. The motor exploration ability, learning and
memory ability of rats were tested; the adenosine triphosphate (ATP) content in the hippocampal tissue of rat was detected; the
changes in the mitochondrial structure of hippocampal tissue was observed; the fluorescence intensity of mitochondrial dynamin-
related protein 1 (Drp1), mitochondrial fission protein 1 (Fis1), mitochondrial fusion 1 (Mfn1), and optic atrophy protein 1
(Opa1) were detected in the hippocampal tissue of rat; the protein expression levels of peroxisome proliferator activated
receptor gamma coactivator-1α(PGC-1α), nuclear respiratory factor-1(NRF-1),mitochondrial transcription factor A(TFAM),
Wnt-3a,β-catenin in hippocampal tissue of rat were detected.
Δ 基金项目 国家自然科学基金项目(No.82104972);山西省卫生
RESULTS Compared with the normal group, the total
健康委员会中医药重点研究室建设项目(No.zyyyjs2024023);山西省
中医药管理局科研课题(No.2022ZYYC267);山西中医药大学博士科 exercise distance, number of central grid entries, number of
研启动基金项目(No.2022BK19);山西中医药大学科技创新能力培育 upright positions, new object recognition index, mitochondrial
计划(No.2023PY-YS-03) ATP content, fluorescence intensity of Mfn1 and Opa1, the
*第一作者 副教授,硕士生导师,博士。研究方向:方剂的现代药
protein expression levels of PGC-1α、NRF-1、TFAM、Wnt-3a、
理作用及其物质基础。E-mail:342014263@qq.com
# 通信作者 教授,硕士生导师,博士。研究方向:方剂的现代药理 β-catenin in the model group were significantly reduced (P<
作用及其物质基础。E-mail:wyh766188@sina.com 0.01), while the rest time and fluorescence intensity of Drp1
· 1050 · China Pharmacy 2024 Vol. 35 No. 9 中国药房 2024年第35卷第9期