补肾健脾开心方对AD大鼠自噬及凋亡相关蛋白的影响
作者:
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湖北中医药大学基础医学院

基金项目:

国家重点研发计划“中医药现代化研究”重点专项(2019YFC1708502)


Effect of Bushen Jianpi Kaixin formula on autophagy and apoptosis in AD rats
Author:
Affiliation:

College of Basic Medical Sciences, Hubei University of Chinese Medicine

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    摘要:

    目的 观察补肾健脾开心方对阿尔茨海默症(Alzheimer’s disease, AD)大鼠学习记忆能力、认知功能及脑皮质区自噬及凋亡的影响,探讨其作用机制。方法 60只SD大鼠随机分为空白组、模型组、补肾组(3.6g/kg·d)、健脾组(4.05g/kg·d)、开心组(2.34g/kg·d)、补肾健脾开心组(9.99g/kg·d),每组10只。采用D-gal注射制备AD大鼠模型,补肾组、健脾组、开心组、补肾健脾开心组分别以相应药物灌胃,空白组、模型组给予等量生理盐水,每日1次。给药4周后,Morris水迷宫实验检测大鼠学习记忆能力,旷场实验检测大鼠认知功能,Western blot检测脑皮质组织LC3-I、LC3-II、Beclin的表达,免疫组化法检测脑皮质组织Bax、Bcl-2的表达,RT-PCR检测脑皮质组织Beclin、P62、Bax、Bcl-2基因水平的表达。结果 与空白组比较,模型组大鼠空间学习记忆能力、认知功能明显下降(P<0.01),Beclin、LC3-I/LC3-II比值显著下调(P<0.01),P62、Bax增多(P<0.01),Bcl-2及Bcl-2/Bax比值明显降低(P<0.01);经补肾健脾开心方治疗后,与模型组比较,补肾健脾开心组大鼠空间学习记忆能力、认知功能改善(P<0.01),Beclin、LC3-I/LC3-II比值显著上调(P<0.01),P62、Bax减少(P<0.01),Bcl-2及Bcl-2/Bax比值明显升高(P<0.01)。结论 补肾健脾开心方可以改善AD大鼠认知障碍,其作用机制可能与调控自噬及凋亡有关。

    Abstract:

    Objective To investigate the effects of Bushen Jianpi Kaixin Formula (BSJPKXF) on the learning and memory ability of Alzheimer s disease (AD) model rats and the related autophagy and apoptosis in cortex of AD model rats, and exploring the underlying mechanism of BSJPKXS. Method The 60 eligible rats were randomly divided into six groups (n = 10): control group, AD group, Bushen group (BS, 3.6g/kg·d), Jianpi group (JP, 4.05g/kg·d), Kaixin group (KX, 2.34g/kg·d) and Bushen Jianpi Kaixin group (BSJPKX, 9.99g/kg·d). AD mouse model was established by intraperitoneal injection of D-gal. The rats in BS group, JP group, KX group and BSJPKX group were gavaged with corresponding drugs once a day. The rats in control group and AD group were treated with equal amount of normal saline one time per day. After four weeks, the learning and memory ability was tested by Morris water maze. The open-field test was used for detecting the cognitive function in rats. The expression of LC3-I, LC3-II and Beclin in cerebral cortical tissues were detected by western bolt. The expression of Bax and Bcl-2 in cerebral cortical tissues were detected by immunohistochemistry. The related mRNA level of Beclin 1, P62, Bax and Bcl-2 in cerebral cortical tissues were detected by RT-PCR. Result Compared with the control group, D-gal significantly decreased the spatial learning and memory ability of rats in the AD group (P < 0.01), decreased the expression of Beclin, LC3-I/LC3-II, Bcl-2 and Bcl-2/Bax, increased the mRNA level of P62 and the expression of Bax (P < 0.01). After treatment, related to the AD model group, Bushen Jianpi Kaixin formula improved the spatial learning memory ability of rats in the BSJPKX group (P < 0.01), increased the expression of Beclin, LC3-I/LC3-II, Bcl-2 and Bcl-2/Bax, decreased the mRNA level of P62 and the expression of Bax (P < 0.01). Conclusion Bushen Jianpi Kaixin formula can improve cognitive impairment in AD rats. The mechanism is presumedly related to the reduction of neural autophagy and apoptosis.

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  • 收稿日期:2022-10-24
  • 最后修改日期:2023-02-21
  • 录用日期:2023-09-05
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