Study on the effect and mechanism of curculigoside on hippocampal neuron injury in epileptic rats
- VernacularTitle:仙茅苷对癫痫大鼠海马神经元损伤的影响机制研究
- Author:
Mo ZHANG
1
;
Yang SHANG
1
;
Jun-na ZHANG
1
;
Guo-sheng HOU
1
;
Xiao-lan RUAN
1
Author Information
- Publication Type:Journal Article
- Keywords: curculigoside; PI3K/Akt/mTOR signaling pathway; epilepsy; microglia; neuronal injury
- From: Journal of Regional Anatomy and Operative Surgery 2025;34(7):589-594
- CountryChina
- Language:Chinese
- Abstract: Objective To investigate the effect and mechanism of curculigoside(CUR)on hippocampal neuron injury in epileptic rats.Methods Forty-eight rats were selected,and the epileptic rat models were established by induction with 35 mg/kg pentylenetetrazol.The epileptic rats were randomly divided into the epilepsy group,the epilepsy+low-dose CUR group(the epilepsy+CUR-L group),the epilepsy+high-dose CUR group(the epilepsy+CUR-H group),and the epilepsy+CUR-H+PI3K activator 740Y-P group(the epilepsy+CUR-H+740Y-P group),with 12 rats in each group.Another 12 rats that were intraperitoneally injected with the same amount of normal saline were taken as the control group.Four weeks after administration,the behavioral changes of rats in each group were observed.Nissl staining was applied to determine the neuronal changes in hippocampal tissue.Immunohistochemistry was applied to detect the number of microglia in hippocampal tissue.ELISA was applied to detect the levels of interleukin-6(IL-6),IL-1β,and gamma-aminobutyric acid(GABA)in hippocampal tissue.TUNEL staining was applied to analyze the level of neuronal apoptosis in hippocampal tissue.Western blot was applied to detect the phosphorylation levels of PI3K,Akt and mTOR in hippocampal tissue.Results Compared with the control group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy group were obviously increased(P<0.05),while the level of GABA in hippocampal tissue was obviously reduced(P<0.05),and the arrangement of neurons in hippocampal tissue was disordered,with neuronal loss.Compared with the epilepsy group,the Racine score,and the frequency of epileptic seizures in rats,and the number of microglia,levels of IL-6,levels of IL-1β,the apoptosis rates of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-L group and the epilepsy+CUR-H group were significantly decreased(P<0.05),while the levels of GABA in hippocampus tissue were significantly increased(P<0.05),the loss and necrosis of neurons in hippocampus tissue were decreased,and the disorder of cell arrangement was improved.Compared with the epilepsy+CUR-H group,the Racine score and the frequency of epileptic seizures in rats,and the number of microglia,level of IL-6,level of IL-1β,the apoptosis rate of neurons,and levels of p-PI3K/PI3K,p-Akt/Akt,p-mTOR/mTOR in hippocampal tissue in the epilepsy+CUR-H+740Y-P group were significantly increased(P<0.05),while the level of GABA in hippocampus tissue was significantly decreased(P<0.05),the loss and necrosis of hippocampal neurons increased,and the cell arrangement was disordered.Conclusion CUR may reduce hippocampal neuron damage in epileptic rats by downregulating the PI3K/Akt/mTOR signaling pathway.
