Effect of Buyang Huanwu Tang on Cerebral Vasospasm After Subarachnoid Hemorrhage in Rats Based on PI3K/Akt/eNOS Signaling Pathway
10.13422/j.cnki.syfjx.20191136
- VernacularTitle: 基于PI3K/Akt/eNOS信号通路探讨补阳还五汤对大鼠蛛网膜下腔出血后脑血管痉挛的影响
- Author:
Ru WANG
1
;
Lei ZHANG
1
;
Wei-pin LI
1
;
Yan-fang SHEN
1
;
Ju-mei DU
1
Author Information
1. The Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang 712000, China
- Publication Type:Research Article
- Keywords:
Buyang Huanwu Tang;
subarachnoid hemorrhage;
cerebral vasospasm;
phosphoinositide 3-kinases;
protein kinase B;
endothelial nitric oxide synthase
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2019;25(13):22-27
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the molecular mechanism of Buyang Huanwu Tang in improving cerebral vasospasm after subarachnoid hemorrhage. Method:Eighty male Sprague-Dawley rats were randomly divided into sham operation group, model group, Buyang Huanwu Tang low and high dose (13, 26 g·kg-1·d-1) group. According to 10 mL·kg-1, the drug was administered twice a day for 7 days. The subarachnoid hemorrhage model was made by double occipital pool injection method. The neurological function scores of rats in each group were evaluated at 1, 3, 5 and 7 days. The diameter of basilar artery was measured by hematoxylin-eosin (HE)staining. The expressions of phosphp-phosphoinositide 3-kinases(p-PI3K), phosphp-protein kinase B(p-Akt),endothelial nitric oxide synthase(eNOS) and neuronal nitric oxide synthase(nNOS) protein in basilar artery brain tissue were detected by Western blot. The expression of nitric oxide(NO) and endothelin-1(ET-1) in rat cerebrospinal fluid was detected by enzyme-linked immunosorbent assay (ELISA). Result:Compared with sham operation group, the neurological function scores of the model group were significantly decreased (P<0.05), the diameter of the basilar artery was significantly reduced (P<0.05), and The expression of p-PI3K, p-Akt, eNOS, nNOS proteins of the basilar artery brain tissue were significantly decreased (P<0.05). The level of NO in the cerebrospinal fluid was significantly decreased (P<0.05), and the ET-1 was significantly increased (P<0.05).Compared with model group, the different doses in Buyang Huanwu Tang group (26,13 g·kg-1·d-1) increased the neurological function scores 3 to 5 days after treatment, and the basilar artery diameter was significant increased (P<0.05).The expression of p-PI3K, p-Akt and eNOS protein was significantly increased (P<0.05).The level of NO was significantly increased (P<0.05), and ET-1 was significantly decreased (P<0.05). Compared with low-dose group, the neurological scores of high-dose group were significantly increased after 7 days of treatment with Buyang Huanwu Tang (P<0.05), and the diameter of the basilar artery was significantly increased (P<0.05), p-PI3K, The expression of p-Akt and eNOS protein was higher (P<0.05), the increase of NO was more obvious (P<0.05), the decrease of ET-1 was more significant (P<0.05). Conclusion:The protective effect of Buyang Huanwu Tang on cerebral vasospasm after subarachnoid hemorrhage may be related to up-regulation of p-PI3K, p-Akt and eNOS expression in PI3K/Akt/eNOS signaling pathway, thereby increasing NO production.
