实用临床医药杂志2023，Vol.27Issue(22)：37-43,7.DOI:10.7619/jcmp.20232286
蒙药额日敦·乌日勒对急性脊髓损伤大鼠神经元凋亡的影响及机制研究
Mechanism and effect of Mongolian medicine Eridun·Wurile on neuronal apoptosis in rats with acute spinal cord injury
摘要
Abstract
Objective To explore the effects and possible mechanism of Mongolian medicine Eridun ·Wurile(EW)on neuronal apoptosis in rats with acute spinal cord injury(SCI).Methods The male SD rats were randomly divided into sham-operated group(sham group),SCI group,EW low-dose group,EW medium-dose group,EW high-dose group and EW high dose+AG490 group,with 15 rats in each group,and the SCI model of rats was established by Allen's method.EW low-dose group,EW medium-dose group and EW high-dose group were given EW suspension at a dosage of 0.32,0.63 and 1.26 g/kg for gavage after surgery,respectively;the EW high-dose+AG490 group was given Janus kinase 2(JAK2)inhibitor AG490(5 mg/kg)by gavage before surgery and EW(1.26 g/kg)by ga-vage after surgery;and the sham and SCI groups were given equal volume of distilled water,twice a day for 2 weeks.The hind limb motor function of each group was assessed by BBB grading score at 1 day,3,7 and 14 days postoperatively;the rats were executed 12 h after the last administration and the spinal cord water content was examined;the histopathological changes were observed by Hematoxy-lin-Eosin(HE)staining in the spinal cord of each group;the apoptosis of spinal neurons was detec-ted by in situ notch end labeling(TUNEL).The expression of Cleaved caspase-3,B-lymphoblas-toma-2(Bcl-2),Bcl-2 associated X protein(Bax),phosphorylated(p)-JAK2,and p-signal transduction and transcriptional activator 3(STAT3)proteins in spinal cord were detected by West-ern blot.Results Compared with the sham group,the BBB scores of rats in the SCI group were significantly lower,spinal cord edema and pathological structural damage were severe,the number of apoptotic cells and the expression of Cleaved caspase-3,Bax,p-JAK2 and p-STAT3 proteins in the spinal cord were significantly increased,while the expression of Bcl-2 was decreased(P＜0.05 or P＜0.01);compared with the SCI group,the BBB scores of EW low-dose group,EW medium-dose group and EW high-dose group gradually increased,the pathological injury degree of spinal cord tissue was relieved,and the number of apoptotic cells in spinal cord tissue was reduced,Cleaved caspase-3,Bax,p-JAK2,and p-STAT3 protein expressions were gradually down-regulated,while Bcl-2 protein expression was gradually up-regulated(P＜0.05 or P＜0.01);compared with EW high-dose group,the expression of P-JAK2,p-STAT3,Bax,Cleaved caspase-3 proteins down-regulated in the spinal cord tissue of EW high dose+AG490 group,and Bcl-2 protein were up-regu-lated,and the differences were statistically significant(P＜0.01).Conclusion EW plays a neu-roprotective role via inhibiting JAK2/STAT3 signaling pathway and reducing apoptosis in acute spi-nal cord injury rats.关键词
蒙药/额日敦·乌日勒/急性脊髓损伤/凋亡/JAK2/STAT3信号通路Key words
Mongolian medicine/Eridun·Wurile/acute spinal cord injury/apoptosis/JAK2/STAT3 signaling pathway分类
医药卫生引用本文复制引用
飞翔,哈斯巴拉,道日娜,郝建彬..蒙药额日敦·乌日勒对急性脊髓损伤大鼠神经元凋亡的影响及机制研究[J].实用临床医药杂志,2023,27(22):37-43,7.基金项目
内蒙古自治区卫生健康科技计划项目(202202369) （202202369）
