OBJECTIVE:To discuss the influence of Sailuotong(塞络通,SLT)on the Neurovascular Unit(NVUs)of amyloid precursor protein(APP)/presenilin-1(PS1)mice and evaluate the role of gas supplementation in activating blood circu...OBJECTIVE:To discuss the influence of Sailuotong(塞络通,SLT)on the Neurovascular Unit(NVUs)of amyloid precursor protein(APP)/presenilin-1(PS1)mice and evaluate the role of gas supplementation in activating blood circulation during the progression of Alzheimer's disease(AD).METHODS:The mice were allocated into the following nine groups:(a)the C57 Black(C57BL)sham-operated group(control group),(b)ischaemic treatment in C57BL mice(the C57 ischaemic group),(c)the APP/PS1 sham surgery group(APP/PS1 model group),(d)ischaemic treatment in APP/PS1 mice(APP/PS1 ischaemic group),(e)C57BL mice treated with aspirin following ischaemic treatment(C57BL ischaemic+aspirin group),(f)C57BL mice treated with SLT following ischaemic treatment(C57BL ischaemic+SLT group),(g)APP/PS1 mice treated with SLT(APP/PS1+SLT group),(h)APP/PS1 mice treated with donepezil hydrochloride following ischaemic treatment(APP/PS1 ischaemic+donepezil hydrochloride group)and(i)APP/PS1 mice treated with SLT following ischaemic treatment(APP/PS1 ischaemic+SLT group).The ischaemic model was established by operating on the bilateral common carotid arteries and creating a microembolism.The Morris water maze and step-down tests were used to detect the spatial behaviour and memory ability of mice.The hippocampus of each mouse was observed by haematoxylin and eosin(HE)and Congo red staining.The ultrastructure of NVUs in each group was observed by electron microscopy,and various biochemical indicators were detected by enzymelinked immunosorbent assay(ELISA).The protein expression level was detected by Western blot.The mRNA expression was detected by quantitative real-time polymerase chain reaction(qRT-PCR).RESULTS:The results of the Morris water maze and step-down tests showed that ischemia reduced learning and memory in the mice,which were restored by SLT.The results of HE staining showed that SLT restored the pathological changes of the NVUs.The Congo red staining results revealed that SLT also improved the scattered orange-red sediments in the upper cortex and hippocampus of the APP/PS1 and APP/PS1 ischaemic mice.Furthermore,SLT significantly reduced the content of Aβ,improved the vascular endothelium and repaired the mitochondrial structures.The ELISA detection,western blot detection and qRT-PCR showed that SLT significantly increased the vascular endothelial growth factor(VEGF),angiopoietin and basic fibroblast growth factor,as well as the levels of gene and protein expression of low-density lipoprotein receptor-related protein-1(LRP-1)and VEGF in brain tissue.CONCLUSIONS:By increasing the expression of VEGF,SLT can promote vascular proliferation,up-regulate the expression of LRP-1,promote the clearance of Aβand improve the cognitive impairment of APP/PS1 mice.These results confirm that SLT can improve AD by promoting vascular proliferation and Aβclearance to protect the function of NVUs.展开更多
目的:从代谢组学角度研究塞络通胶囊治疗急性多发性脑梗死大鼠模型的作用机制。方法:24只SD大鼠随机分为假手术组、模型组和塞络通组(33 mg·kg^-1),通过大鼠颈内动脉注射荧光微球的方法建立急性多发性脑梗死大鼠模型。手术成功后,...目的:从代谢组学角度研究塞络通胶囊治疗急性多发性脑梗死大鼠模型的作用机制。方法:24只SD大鼠随机分为假手术组、模型组和塞络通组(33 mg·kg^-1),通过大鼠颈内动脉注射荧光微球的方法建立急性多发性脑梗死大鼠模型。手术成功后,塞络通组大鼠通过十二指肠注射给药,给药体积2 m L·kg^-1。基于UPLC-Q-TOF-MS分析各组大鼠脑组织中内源性代谢物,应用主成分分析(PCA)和偏最小二乘法-判别分析(PLS-DA)进行模式识别及生物标志物的鉴定。结果:通过模式识别发现假手术组与模型组的代谢轮廓有明显差异,并鉴定了10个与急性脑缺血相关的生物标志物。与假手术组相比,模型组中N-乙酰天门冬氨酸(NAA),延胡索酸,谷胱甘肽,脱氢抗坏血酸,天门冬氨酸以及S-腺苷同型半胱氨酸含量下降,精氨酸、瓜氨酸、酵母氨酸、乙内酰脲-5-丙酸含量升高;而塞络通胶囊则可使上述10个异常变化的生物标志物水平显著回调。结论:塞络通胶囊主要调节的代谢途径有NAA代谢、精氨酸代谢、能量代谢及氧化应激等。展开更多
基金National Natural Science Foundation of China(81503450):Experimental study on the treatment of transgenic mice with Alzheimer's disease by protecting neurovascular unit by supplementing Qi and activating blood circulation investigate。
文摘OBJECTIVE:To discuss the influence of Sailuotong(塞络通,SLT)on the Neurovascular Unit(NVUs)of amyloid precursor protein(APP)/presenilin-1(PS1)mice and evaluate the role of gas supplementation in activating blood circulation during the progression of Alzheimer's disease(AD).METHODS:The mice were allocated into the following nine groups:(a)the C57 Black(C57BL)sham-operated group(control group),(b)ischaemic treatment in C57BL mice(the C57 ischaemic group),(c)the APP/PS1 sham surgery group(APP/PS1 model group),(d)ischaemic treatment in APP/PS1 mice(APP/PS1 ischaemic group),(e)C57BL mice treated with aspirin following ischaemic treatment(C57BL ischaemic+aspirin group),(f)C57BL mice treated with SLT following ischaemic treatment(C57BL ischaemic+SLT group),(g)APP/PS1 mice treated with SLT(APP/PS1+SLT group),(h)APP/PS1 mice treated with donepezil hydrochloride following ischaemic treatment(APP/PS1 ischaemic+donepezil hydrochloride group)and(i)APP/PS1 mice treated with SLT following ischaemic treatment(APP/PS1 ischaemic+SLT group).The ischaemic model was established by operating on the bilateral common carotid arteries and creating a microembolism.The Morris water maze and step-down tests were used to detect the spatial behaviour and memory ability of mice.The hippocampus of each mouse was observed by haematoxylin and eosin(HE)and Congo red staining.The ultrastructure of NVUs in each group was observed by electron microscopy,and various biochemical indicators were detected by enzymelinked immunosorbent assay(ELISA).The protein expression level was detected by Western blot.The mRNA expression was detected by quantitative real-time polymerase chain reaction(qRT-PCR).RESULTS:The results of the Morris water maze and step-down tests showed that ischemia reduced learning and memory in the mice,which were restored by SLT.The results of HE staining showed that SLT restored the pathological changes of the NVUs.The Congo red staining results revealed that SLT also improved the scattered orange-red sediments in the upper cortex and hippocampus of the APP/PS1 and APP/PS1 ischaemic mice.Furthermore,SLT significantly reduced the content of Aβ,improved the vascular endothelium and repaired the mitochondrial structures.The ELISA detection,western blot detection and qRT-PCR showed that SLT significantly increased the vascular endothelial growth factor(VEGF),angiopoietin and basic fibroblast growth factor,as well as the levels of gene and protein expression of low-density lipoprotein receptor-related protein-1(LRP-1)and VEGF in brain tissue.CONCLUSIONS:By increasing the expression of VEGF,SLT can promote vascular proliferation,up-regulate the expression of LRP-1,promote the clearance of Aβand improve the cognitive impairment of APP/PS1 mice.These results confirm that SLT can improve AD by promoting vascular proliferation and Aβclearance to protect the function of NVUs.
文摘目的:从代谢组学角度研究塞络通胶囊治疗急性多发性脑梗死大鼠模型的作用机制。方法:24只SD大鼠随机分为假手术组、模型组和塞络通组(33 mg·kg^-1),通过大鼠颈内动脉注射荧光微球的方法建立急性多发性脑梗死大鼠模型。手术成功后,塞络通组大鼠通过十二指肠注射给药,给药体积2 m L·kg^-1。基于UPLC-Q-TOF-MS分析各组大鼠脑组织中内源性代谢物,应用主成分分析(PCA)和偏最小二乘法-判别分析(PLS-DA)进行模式识别及生物标志物的鉴定。结果:通过模式识别发现假手术组与模型组的代谢轮廓有明显差异,并鉴定了10个与急性脑缺血相关的生物标志物。与假手术组相比,模型组中N-乙酰天门冬氨酸(NAA),延胡索酸,谷胱甘肽,脱氢抗坏血酸,天门冬氨酸以及S-腺苷同型半胱氨酸含量下降,精氨酸、瓜氨酸、酵母氨酸、乙内酰脲-5-丙酸含量升高;而塞络通胶囊则可使上述10个异常变化的生物标志物水平显著回调。结论:塞络通胶囊主要调节的代谢途径有NAA代谢、精氨酸代谢、能量代谢及氧化应激等。
