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1.河北大学 中医学院,河北 保定 071051
2.河北中医学院,石家庄 050051
3.华北理工大学 中医学院,河北 唐山 063210
4.河北省中医药科学院,石家庄 050031
5.河北医科大学 第二医院,石家庄 050073
王江红,在读硕士,主治医师,从事中西医结合治疗脑病研究,E-mail:1033539623@qq.com
张少丹,硕士,主任医师,从事儿科危重症急救工作,E-mail:13653115066@163.com
裴林,博士,主任医师,从事中医脑病临床与基础研究,E-mail:13831190309@163.com
收稿日期:2021-04-16,
网络出版日期:2021-06-30,
纸质出版日期:2021-09-05
移动端阅览
王江红,杨佳丽,严少博等.化浊解毒疏肝方对癫痫大鼠学习记忆及PI3K/Akt/GSK-3β信号通路的影响[J].中国实验方剂学杂志,2021,27(17):57-65.
WANG Jiang-hong,YANG Jia-li,YAN Shao-bo,et al.Effect of Huazhuo Jiedu Shugan Prescription on Learning, Memory, and PI3K/Akt/GSK-3β Signaling Pathway in Epileptic Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):57-65.
王江红,杨佳丽,严少博等.化浊解毒疏肝方对癫痫大鼠学习记忆及PI3K/Akt/GSK-3β信号通路的影响[J].中国实验方剂学杂志,2021,27(17):57-65. DOI: 10.13422/j.cnki.syfjx.20211603.
WANG Jiang-hong,YANG Jia-li,YAN Shao-bo,et al.Effect of Huazhuo Jiedu Shugan Prescription on Learning, Memory, and PI3K/Akt/GSK-3β Signaling Pathway in Epileptic Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):57-65. DOI: 10.13422/j.cnki.syfjx.20211603.
目的
2
观察化浊解毒疏肝方对癫痫大鼠学习记忆及磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)/糖原合成酶激酶-3
β
(GSK-3
β
)通路相关蛋白表达的影响,探讨其可能的作用机制。
方法
2
选取SPF级雄性SD大鼠48只,随机分为正常组、模型组、丙戊酸钠组、化浊解毒疏肝方低、中、高剂量组,每组8只。正常组给予0.9%氯化钠溶液腹腔注射(0.035 g·kg
-1
),其余5组给予同等剂量戊四氮(PTZ)腹腔注射制备大鼠慢性癫痫模型,共14次。化浊解毒疏肝方低、中、高剂量组分别灌胃化浊解毒疏肝方2.7,5.4,10.8 g·kg
-1
,丙戊酸钠组灌胃丙戊酸钠0.19 g·kg
-1
,正常组和模型组灌胃同等体积0.9%氯化钠溶液,每天1次,持续28 d。药物干预期间,各造模组大鼠在第7,14,21,28天给予PTZ腹腔注射以维持癫痫模型。应用Morris水迷宫观察大鼠的行为学变化,苏木素-伊红(HE)染色观察大鼠海马神经元病理形态学变化,免疫组化检测磷酸化(p)-Akt,p-GSK-3
β
蛋白的表达,蛋白免疫印迹法(Western blot)检测PI3K,Akt,p-Akt,GSK-3
β,
p-GSK-3
β
蛋白表达情况。
结果
2
与正常组比较,模型组大鼠寻找平台时间延长(
P
<
0.01),穿越平台次数减少(
P
<
0.01),海马CA1区神经元结构损伤,海马CA1区p-Akt,p-GSK-3
β
蛋白表达降低(
P
<
0.05),海马组织PI3K,p-Akt,p-GSK-3
β
相对表达量降低(
P
<
0.01)。与模型组比较,丙戊酸钠组、化浊解毒疏肝方各剂量组大鼠寻找平台时间缩短(
P
<
0.01);丙戊酸钠组、化浊解毒疏肝方高、中剂量组大鼠穿越平台次数升高(
P
<
0.01),各治疗组海马CA1区神经元结构明显改善,化浊解毒疏肝方高、中剂量组、丙戊酸钠组海马CA1区p-Akt,p-GSK-3
β
蛋白表达升高(
P
<
0.05),化浊解毒疏肝方高、中剂量组、丙戊酸钠组PI3K,p-Akt,p-GSK-3
β
相对表达量升高(
P
<
0.01)。
结论
2
化浊解毒疏肝方可改善癫痫大鼠学习记忆能力,可能与激活PI3K/Akt/GSK-3
β
通路相关蛋白有关,从而发挥抗癫痫作用。
Objective
2
To observe the effects of Huazhuo Jiedu Shugan Prescription (HZJDSG) on learning, memory, and the expression of phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/glycogen synthase kinase-3
β
(GSK-3
β
) pathway-related proteins in epileptic rats, and to explore its possible mechanism.
Method
2
Forty-eight SPF male SD rats were randomly divided into a normal group, a model group, a sodium valproate (0.19 g·kg
-1
) group, and low- (2.7 g·kg
-1
), medium- (5.4 g·kg
-1
), and high-dose (10.8 g·kg
-1
) HZJDSG groups, with eight rats in each group. The normal group received 0.9% sodium chloride solution (0.035 g·kg
-1
) by intraperitoneal injection, and the other five groups received pentetrazol (PTZ) at the same dose to induce a chronic epilepsy model for a total of 14 times. The drug groups received corresponding drugs and the normal group and the model group received 0.9% sodium chloride solution at the same volume once a day for 28 days. During the drug intervention period, epilepsy was maintained in each modeling group by intraperitoneal injection of PTZ on day 7, 14, 21, and 28. The behavioral changes of rats were observed by Morris water maze and the pathomorphological changes of rat hippocampal neurons by hematoxylin-eosin (HE) staining. The protein expression of phosphorylation Akt(p-Akt)and p-GSK-3
β
was detected by immunohistochemistry and the protein expression of PI3K, Akt, p-Akt, GSK-3
β
, and p-GSK-3
β
by Western blot.
Result
2
Compared with the normal group, the model group showed prolonged platform finding time (
P
<
0.01), reduced number of platform crossings (
P
<
0.01), structural damage of neurons in the CA1 region of the hippocampus, down-regulated protein expression of p-Akt and p-GSK-3
β
in the CA1 region of the hippocampus (
P
<
0.05), and reduced relative expression of PI3K, p-Akt, and p-GSK-3
β
in the hippocampus (
P
<
0.01). Compared with the model group, the sodium valproate group and the HZJDSG groups showed shortened platform finding time (
P
<
0.01) and improved neuronal structure in the CA1 region of the hippocampus, while the sodium valproate group and the high- and medium-dose HZJDSG groups exhibited increased number of platform crossings (
P
<
0.01), up-regulated protein expression of p-Akt and p-GSK-3
β
in the CA1 region of the hippocampus (
P
<
0.05), and elevated relative expression of PI3K, p-Akt, and p-GSK-3
β
(
P
<
0.01).
Conclusion
2
HZJDSG can improve the learning and memory of epileptic rats, and its antiepileptic effect may be achieved by the activation of PI3K/Akt/GSK-3
β
pathway-related proteins.
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