石菖蒲及其活性成分-5-羟甲基糠醛对疲劳运动大鼠学习记忆的影响及其机制*

doi:10.12047/j.cjap.5779.2019.078

摘要/Abstract

摘要： 目的:研究石菖蒲及5-羟甲基糠醛(HMF)对疲劳运动大鼠学习记忆和海马ERK/CREB信号的影响。方法:将SD大鼠随机分为:正常组(A)、运动组( B )、运动+HMF低、中、高剂量组(C、D、E)、运动+石菖蒲低、中、高剂量组( F、G、H ),每组10只。并在疲劳运动开始前2 h分别以0.10、1.00和3.00 mg. kg^-1. wt^-1HMF,灌胃C、D、E组,以0.12、1.20和4.80 g. kg^-1. wt^-1石菖蒲提取物,灌胃 F、G、H组。实验结束后采用水迷宫实验进行学习记忆检测,用免疫印迹法测定海马p-ERK1/2和p-CREB表达。结果:E和H组大鼠逃避潜伏期低于B、C、D、F和G组;穿越平台次数、p-ERK1/2、p-CREB蛋白表达高于B、C、D、F和G组(P均＜0.01);除E组p-ERK2蛋白表达低于A、H组(P＜0.05)外,上述各指标A、E、H组比较,差异均无显著性(P均＞0.05)。结论:石菖蒲及HMF能明显改善运动疲劳大鼠学习记忆,其机制与上调海马ERK/CREB信号有关。

关键词: 石菖蒲, 5-羟甲基糠醛, 运动, 学习记忆, 细胞外信号调节激酶, cAMP 反应元件结合蛋白, 大鼠

Abstract: Objective: To investigate the effects of Acorus tatarinowii Schott and its active component 5- hydroxymethyl furfural (HMF) on learning and memory and ERK/CREB signal in hippocampus of rats with exercise-induced fatigue. Methods: SD rats were randomly divided into normal group (A), exercise group (B), exercise + HMF low, middle and high dose treatment group (C, D, E), exercise + acorus tatarinowii Schott low, middle and high dose treatment group (F, G, H), with ten rats in each group. The rats in group C, D and E were treated with HMF at the doses of 0.10, 1.00 and 3.00 mg. kg^-1 by ig. The rats in group F, G and H were treated with the extracts of Acorus tatarinowii Schott at the doses of 0.12, 1.20 and 4.80 g. kg^-1 by ig. Learning and memory of rats were tested by the method of water maze experiment, and the expression levels of p-ERK1/2 and p-CREB protein in hippocampus of rats were tested by the method of Western blot in the end of the experiment. Results: The escape latencies of E and H groups were lower than those of groups B, C, D, F and G; and the numbers of plateau crossing were more than those of groups B, C, D, F and G and the expression levels of p-ERK1/2, p-CREB protein were higher than those of groups B, C, D, F and G , respectively(P ＜ 0.01). There was no significant difference in the above indexes among groups A, E and H(P＞0.05) except that the expression levels of p-ERK2 protein in group E were lower than those in group A and H (P＜0.05). Conclusion: Acorus tatarinowii and its active component- HMF can improve the learning and memory of rats with exercise-induced fatigue, and the mechanism is related to the up-regulation of ERK / CREB signal in hippocampus of rats with exercise-induced fatigue.

Key words: acorus tatarinowii Schott, 5-hydroxymethylfurfural, exercise, learning and memory, extracellular signal-regulated kinase, cAMP-responsive element-binding protein, rat

陈惠花, 朱梅菊, 朱洪竹, 丁孝民, 王卉, 毛泽华. 石菖蒲及其活性成分-5-羟甲基糠醛对疲劳运动大鼠学习记忆的影响及其机制^*[J]. 中国应用生理学杂志, 2019, 35(4): 366-370.

CHEN Hui-hua, ZHU Mei-ju, ZHU Hong-zhu, DING Xiao-min, WANG Hui, MAO Ze-hua. Effects of Acorus tatarinowii Schott and its active component -5- hydroxymethylfurfural on ERK/CREB signal in hippocampus of exercise-induced fatigue rats[J]. CJAP, 2019, 35(4): 366-370.

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石菖蒲及其活性成分-5-羟甲基糠醛对疲劳运动大鼠学习记忆的影响及其机制^*

Effects of Acorus tatarinowii Schott and its active component -5- hydroxymethylfurfural on ERK/CREB signal in hippocampus of exercise-induced fatigue rats

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