連翹酯苷對東莨菪堿模型小鼠學(xué)習(xí)記憶的影響及其機(jī)制研究
[Abstract]:Aim: to study the effect of phillyrin on learning and memory of scopolamine model mice and to explore its mechanism, so as to provide data support for the study of forsythyl glycoside against Alzheimer's disease. Methods: Kunming mice were randomly divided into 4 groups: normal group, scopolamine model group, donepezil group (3 mg kg-1) and forsythrin (200 mg kg-1) group, with 12 mice in each group. Each group was given continuously for 14 days. On the 14th day of administration, scopolamine model group, Donepazil group and forsythyl glycoside group were given scopolamine (3 mg kg-1). After 20 min injection, the platform test was carried out. At the same time, the effects of phillyrin on acetylcholinesterase (Ach E) and cyclic adenosine monophosphate extracellular signal-regulated kinase pathway were observed. In addition, Kunming mice were divided into four groups: normal group, scopolamine model group, vitamin E group (100 mg kg-1) and forsythol glycoside (200 mg kg-1) group. After 14 days of administration, the animals were decapitated and the effects of forsythyl glycosides on (SOD), malondialdehyde (MDA), monoamine oxidase (MAO) in scopolamine model were detected. Results: compared with the normal group, the safe period time ratio of scopolamine model group decreased significantly (P 0.05), and forsythyl glycoside significantly increased the safety period time ratio (P 0.05). Phillyrin significantly decreased Ach E activity in cerebral cortex and hippocampus of scopolamine model mice (P 0.05). Phillyrin significantly increased the content of P-ERK in hippocampus of scopolamine model mice, which was significantly different from that of scopolamine group (P 0.05). At the same time, compared with the normal group, scopolamine group significantly decreased SOD activity, increased MDA content and increased MAO activity in cerebral cortex and hippocampus of mice (P 0.05). Phillyrin significantly increased SOD activity and decreased MDA content and MAO activity in cerebral cortex and hippocampus of mice, which were significantly different from those in scopolamine group (P 0.05). Conclusion: phillyrin can improve the learning and memory ability of scopolamine model mice, and its mechanism may be related to the inhibition of Ach E activity in cerebral cortex of model mice, the promotion of cyclic adenosine monophosphate (c AMP) expression, the activation of extracellular signal-regulated kinase (ERK) and antioxidant activity.
【作者單位】: 山東中醫(yī)藥大學(xué)附屬醫(yī)院;北京協(xié)和醫(yī)學(xué)院比較醫(yī)學(xué)中心中國醫(yī)學(xué)科學(xué)院醫(yī)學(xué)實(shí)驗(yàn)動物研究所衛(wèi)生部人類疾病比較醫(yī)學(xué)重點(diǎn)實(shí)驗(yàn)室國家中醫(yī)藥管理局人類動物模型三級實(shí)驗(yàn)室;中國醫(yī)學(xué)科學(xué)院藥用植物研究所北京協(xié)和醫(yī)學(xué)院藥理毒理中心;
【基金】:全軍醫(yī)學(xué)科技“十二五”科研項(xiàng)目(BWS11J052) 對歐科技合作專項(xiàng)-保健品風(fēng)險(xiǎn)效益評估合作研究項(xiàng)目(1108)
【分類號】:R285.5;R-332
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