OBJECTIVE:To explore the protective mechanisms of the Traditional Chinese Medicine Bushenhuoxue(BSHX)in a rat model of vascular dementia(VD).METHODS:A rat model of VD was developed using bilateral common carotid arter...OBJECTIVE:To explore the protective mechanisms of the Traditional Chinese Medicine Bushenhuoxue(BSHX)in a rat model of vascular dementia(VD).METHODS:A rat model of VD was developed using bilateral common carotid artery occlusion(BCCAO).Rats were administered BSHX(10.14 or 5.07 g/kg),nimodipine(11.06 mg/kg;positive control),or saline(control)by gavage daily for 30 d post-surgery.Learning and memory abilities were assessed using the Morris water maze.Morphological changes in the hippocampus were observed using light microscopy(hematoxylin and eosin staining)and transmission electron microscopy(TEM).The m RNA and protein expression levels of brain-derived neurotrophic factor(BDNF),tyrosine receptor kinase B(Trk B),phosphatidyl inositol 3-kinase(PI3 K),serine/threonine kinase(AKT),and c AMP response element binding protein(CREB)were measured by real-time polymerase chain reaction(RT-PCR)and Western blot,respectively.RESULTS:Compared with the sham group,rats with BCCAO exhibited impaired learning and memory abilities(Morris water maze)and showed abnormalities in neuronal morphology(light microscopy)and ultrastructure(TEM)in the hippocampus.They also had decreased m RNA and protein expressions of BDNF,Trk B,PI3 K,AKT,and CREB in hippocampal tissue(all P<0.05).In rats with BCCAO,administration of BSHX attenuated deficits in learning and memory,improved the morphology and ultrastructure of hippocampal neurons,and enhanced m RNA and protein expression levels of BDNF,Trk B,PI3 K,AKT,and CREB(all P<0.05).CONCLUSION:BSHX may protect hippocampal neurons and improve learning and memory abilities,at least in part via the activation of BDNF/Trk B/PI3 K/AKT/CREB signaling.展开更多
目的研究血管平滑肌细胞钙化中受体相互作用蛋白激酶3(Ripk3)调控钙磷沉积、细胞骨分化和细胞凋亡的作用。方法采用β磷酸甘油和氯化钙培养大鼠主动脉血管平滑肌细胞诱导钙化。实验随机分为4组:对照组、钙化组、Ripk3^(-/-)组、钙化+Rip...目的研究血管平滑肌细胞钙化中受体相互作用蛋白激酶3(Ripk3)调控钙磷沉积、细胞骨分化和细胞凋亡的作用。方法采用β磷酸甘油和氯化钙培养大鼠主动脉血管平滑肌细胞诱导钙化。实验随机分为4组:对照组、钙化组、Ripk3^(-/-)组、钙化+Ripk3^(-/-)组(联合组)。使用茜素红S染色检测血管平滑肌细胞钙化情况,同时测定细胞内Ca^(2+)含量和碱性磷酸酶活性。Western blot法测定Runt相关转录因子2、骨形态发生蛋白2和半胱氨酸天冬氨酸蛋白酶3表达。结果血管平滑肌细胞钙化3、7 d的Ripk3表达较钙化前明显增加,14 d的Ripk3表达较7 d明显增加,并达到最高值,差异有统计学意义(P<0.05)。与对照组和Ripk3^(-/-)组比较,钙化组Ca^(2+)、碱性磷酸酶活性、Runt相关转录因子2、骨形态发生蛋白2、细胞凋亡率和活化的半胱氨酸天冬氨酸蛋白酶3表达明显增加,差异有统计学意义(P<0.05)。与钙化组比较,联合组Ca^(2+)和碱性磷酸酶活性明显降低[(102.8±12.8)nmol/mg vs(457.1±51.2)nmol/mg,(136.1±15.4)U/mg vs(412.2±46.7)U/mg,P<0.05],Runt相关转录因子2和骨形态发生蛋白2表达明显降低(1.07±0.15 vs 1.84±0.23,1.27±0.14 vs 3.01±0.25,P<0.05)。与钙化组比较,联合组细胞凋亡率和活化的半胱氨酸天冬氨酸蛋白酶3表达明显降低,差异有统计学意义[(15.8±3.9)%vs(31.1±4.2)%,1.19±0.14 vs 2.21±0.23,P<0.05]。结论Ripk3通过促进钙磷沉积、细胞骨分化和细胞凋亡起到加重血管钙化的作用。展开更多
基金Supported by Hebei Province Natural Science Fund(Protection Mechanism Research of Bushenhuoxue on Hippocampal Nerve in Rats with Vascular Dementia Based on BDNF/Trk B Signaling Pathway,No.H2015423057)Hebei Provincial Department of Education Science and Technology Research Key Funding Project(Study on the Mechanism of Regulating the Autophagy and Apoptosis of Hippocampal Neurons in VD Rats by Bushenhuoxue Prescription,No.ZD2018009)Research Capacity Enhancement Project of Hebei University of Chinese Medicine(Improvement of Hippocampal Synaptic Remodeling in Rats with Vascular Dementia by Regulating BDNF/Trk B Signaling Pathway Based on the"renal essence"theory,No.2019-11).
文摘OBJECTIVE:To explore the protective mechanisms of the Traditional Chinese Medicine Bushenhuoxue(BSHX)in a rat model of vascular dementia(VD).METHODS:A rat model of VD was developed using bilateral common carotid artery occlusion(BCCAO).Rats were administered BSHX(10.14 or 5.07 g/kg),nimodipine(11.06 mg/kg;positive control),or saline(control)by gavage daily for 30 d post-surgery.Learning and memory abilities were assessed using the Morris water maze.Morphological changes in the hippocampus were observed using light microscopy(hematoxylin and eosin staining)and transmission electron microscopy(TEM).The m RNA and protein expression levels of brain-derived neurotrophic factor(BDNF),tyrosine receptor kinase B(Trk B),phosphatidyl inositol 3-kinase(PI3 K),serine/threonine kinase(AKT),and c AMP response element binding protein(CREB)were measured by real-time polymerase chain reaction(RT-PCR)and Western blot,respectively.RESULTS:Compared with the sham group,rats with BCCAO exhibited impaired learning and memory abilities(Morris water maze)and showed abnormalities in neuronal morphology(light microscopy)and ultrastructure(TEM)in the hippocampus.They also had decreased m RNA and protein expressions of BDNF,Trk B,PI3 K,AKT,and CREB in hippocampal tissue(all P<0.05).In rats with BCCAO,administration of BSHX attenuated deficits in learning and memory,improved the morphology and ultrastructure of hippocampal neurons,and enhanced m RNA and protein expression levels of BDNF,Trk B,PI3 K,AKT,and CREB(all P<0.05).CONCLUSION:BSHX may protect hippocampal neurons and improve learning and memory abilities,at least in part via the activation of BDNF/Trk B/PI3 K/AKT/CREB signaling.
文摘目的研究血管平滑肌细胞钙化中受体相互作用蛋白激酶3(Ripk3)调控钙磷沉积、细胞骨分化和细胞凋亡的作用。方法采用β磷酸甘油和氯化钙培养大鼠主动脉血管平滑肌细胞诱导钙化。实验随机分为4组:对照组、钙化组、Ripk3^(-/-)组、钙化+Ripk3^(-/-)组(联合组)。使用茜素红S染色检测血管平滑肌细胞钙化情况,同时测定细胞内Ca^(2+)含量和碱性磷酸酶活性。Western blot法测定Runt相关转录因子2、骨形态发生蛋白2和半胱氨酸天冬氨酸蛋白酶3表达。结果血管平滑肌细胞钙化3、7 d的Ripk3表达较钙化前明显增加,14 d的Ripk3表达较7 d明显增加,并达到最高值,差异有统计学意义(P<0.05)。与对照组和Ripk3^(-/-)组比较,钙化组Ca^(2+)、碱性磷酸酶活性、Runt相关转录因子2、骨形态发生蛋白2、细胞凋亡率和活化的半胱氨酸天冬氨酸蛋白酶3表达明显增加,差异有统计学意义(P<0.05)。与钙化组比较,联合组Ca^(2+)和碱性磷酸酶活性明显降低[(102.8±12.8)nmol/mg vs(457.1±51.2)nmol/mg,(136.1±15.4)U/mg vs(412.2±46.7)U/mg,P<0.05],Runt相关转录因子2和骨形态发生蛋白2表达明显降低(1.07±0.15 vs 1.84±0.23,1.27±0.14 vs 3.01±0.25,P<0.05)。与钙化组比较,联合组细胞凋亡率和活化的半胱氨酸天冬氨酸蛋白酶3表达明显降低,差异有统计学意义[(15.8±3.9)%vs(31.1±4.2)%,1.19±0.14 vs 2.21±0.23,P<0.05]。结论Ripk3通过促进钙磷沉积、细胞骨分化和细胞凋亡起到加重血管钙化的作用。
