目的:研究山茱萸多糖对血管性痴呆(VD)模型大鼠学习记忆能力的影响及其机制。方法:将30只大鼠随机均分为假手术(生理盐水)组、模型(生理盐水)组和山茱萸多糖(0.28 g/kg)组。除假手术组外,其余各组大鼠均复制VD模型,并同时ig相应药物,每...目的:研究山茱萸多糖对血管性痴呆(VD)模型大鼠学习记忆能力的影响及其机制。方法:将30只大鼠随机均分为假手术(生理盐水)组、模型(生理盐水)组和山茱萸多糖(0.28 g/kg)组。除假手术组外,其余各组大鼠均复制VD模型,并同时ig相应药物,每天1次。4周后,测定各组大鼠跨越原平台位置次数、水迷宫平均逃避潜伏期、平台滞留时间、平均游泳路程,测定各组大鼠海马组织中脑源性神经生长因子(BDNF)、凋亡相关基因Bcl-2 m RNA及其蛋白的表达。结果:与假手术组比较,模型组大鼠的学习记忆能力下降,表现为跨越原平台位置次数减少、水迷宫平均逃避潜伏期延长、平台滞留时间缩短、平均游泳路程变长(P<0.05),海马组织中BDNF、Bcl-2 m RNA及其蛋白表达明显减弱(P<0.05);与模型组比较,山茱萸多糖组大鼠的学习记忆能力增强,表现为跨越原平台位置次数增加、水迷宫平均逃避潜伏期缩短、平台滞留时间延长、平均游泳路程变短(P<0.05),海马组织中BDNF、Bcl-2 m RNA及其蛋白表达明显增强(P<0.05)。结论:山茱萸多糖能够改善VD大鼠的学习记忆能力,其机制可能与上调海马组织中BDNF、Bcl-2的表达有关。展开更多
Objective: To investigate effects of Cornus officinalis Total Glycosides (COTG) and Cornus Polysaccharide (CP) on myocardial protection and on expression of mitochondria biogenesis related gene of acute myocardial inf...Objective: To investigate effects of Cornus officinalis Total Glycosides (COTG) and Cornus Polysaccharide (CP) on myocardial protection and on expression of mitochondria biogenesis related gene of acute myocardial infarction (AMI) rats, Materials and Methods: Ninety-six SD rats of SPF level were randomly divided into 5 groups: sham operation group, model group, preventive treatment group, COTG treatment group, CP treatment group, and there were 12 cases in each one. By legating the left anterior descending branch of coronary artery method, acute myocardial infarction model was established. The rat of sham operation group and model group was intragastric administered with physiological saline;other groups were given with corresponding drugs. The cardiac function, the myocardial infarct area, the expression of mitochondrial biogenesis genes such as PGC-1α, PGC-1β, NRF-1mRNA and GSK-3β mRNA, GSK-3β Protein Expression were analyzed. Results: The results revealed that compared with model group, myocardial infarction size, LVDs, LVDd, LVESV, LVEDP, and -dp/dt decreased;LVSP increased in preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05);LVEDV increased in preventive treatment group (p < 0.05), PGC 1 alpha, and PGC 1 beta;the NRF-1 mRNA expression increased in preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05). Compared with CP and COTG treatment group, PGClpha, beta PGC 1, the NRF-1 mRNA expression increased in preventive treatment group (p < 0.05). Compared with the sham operation group, GSK-3 beta mRNA and protein expression increased in model group, preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05). Compared with model group, GSK-3 beta mRNA expression reduced in preventive treatment group, COTG treatment group, and CP treatment group (p Cornus officinalis total glycosides and Cornus polysaccharides can effectively protect myocardial mitochondria of acute myocardial infarction rats by activating GSK-3β signaling 展开更多
文摘目的:研究山茱萸多糖对血管性痴呆(VD)模型大鼠学习记忆能力的影响及其机制。方法:将30只大鼠随机均分为假手术(生理盐水)组、模型(生理盐水)组和山茱萸多糖(0.28 g/kg)组。除假手术组外,其余各组大鼠均复制VD模型,并同时ig相应药物,每天1次。4周后,测定各组大鼠跨越原平台位置次数、水迷宫平均逃避潜伏期、平台滞留时间、平均游泳路程,测定各组大鼠海马组织中脑源性神经生长因子(BDNF)、凋亡相关基因Bcl-2 m RNA及其蛋白的表达。结果:与假手术组比较,模型组大鼠的学习记忆能力下降,表现为跨越原平台位置次数减少、水迷宫平均逃避潜伏期延长、平台滞留时间缩短、平均游泳路程变长(P<0.05),海马组织中BDNF、Bcl-2 m RNA及其蛋白表达明显减弱(P<0.05);与模型组比较,山茱萸多糖组大鼠的学习记忆能力增强,表现为跨越原平台位置次数增加、水迷宫平均逃避潜伏期缩短、平台滞留时间延长、平均游泳路程变短(P<0.05),海马组织中BDNF、Bcl-2 m RNA及其蛋白表达明显增强(P<0.05)。结论:山茱萸多糖能够改善VD大鼠的学习记忆能力,其机制可能与上调海马组织中BDNF、Bcl-2的表达有关。
文摘Objective: To investigate effects of Cornus officinalis Total Glycosides (COTG) and Cornus Polysaccharide (CP) on myocardial protection and on expression of mitochondria biogenesis related gene of acute myocardial infarction (AMI) rats, Materials and Methods: Ninety-six SD rats of SPF level were randomly divided into 5 groups: sham operation group, model group, preventive treatment group, COTG treatment group, CP treatment group, and there were 12 cases in each one. By legating the left anterior descending branch of coronary artery method, acute myocardial infarction model was established. The rat of sham operation group and model group was intragastric administered with physiological saline;other groups were given with corresponding drugs. The cardiac function, the myocardial infarct area, the expression of mitochondrial biogenesis genes such as PGC-1α, PGC-1β, NRF-1mRNA and GSK-3β mRNA, GSK-3β Protein Expression were analyzed. Results: The results revealed that compared with model group, myocardial infarction size, LVDs, LVDd, LVESV, LVEDP, and -dp/dt decreased;LVSP increased in preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05);LVEDV increased in preventive treatment group (p < 0.05), PGC 1 alpha, and PGC 1 beta;the NRF-1 mRNA expression increased in preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05). Compared with CP and COTG treatment group, PGClpha, beta PGC 1, the NRF-1 mRNA expression increased in preventive treatment group (p < 0.05). Compared with the sham operation group, GSK-3 beta mRNA and protein expression increased in model group, preventive treatment group, COTG treatment group, and CP treatment group (p < 0.05). Compared with model group, GSK-3 beta mRNA expression reduced in preventive treatment group, COTG treatment group, and CP treatment group (p Cornus officinalis total glycosides and Cornus polysaccharides can effectively protect myocardial mitochondria of acute myocardial infarction rats by activating GSK-3β signaling
