葡萄籽原花青素对学习记忆的影响

目的　研究葡萄籽原花青素对学习记忆和对血液、脑组织过氧化脂质的影响。方法　通过对小鼠scD 半乳糖 6周 ,制备小鼠衰老模型 ,同时 po葡萄籽原花青素 ,分别采用跳台法、Y型迷宫法测试小鼠的学习记忆能力 ,并测定小鼠血液和脑组织的过氧化脂质 ;正常小鼠 po给予葡萄籽原花青素 ,连续 19d ,采用Morris水迷宫法测试小鼠的学习记忆能力。结果　葡萄籽原花青素对D 半乳糖处理小鼠在跳台法的测试中 ,延长潜伏期 ,减少 5min内错误总数 ;在Y型迷路的测试中 ,能减少错误反应次数 ;并能降低小鼠血液和脑组织中过氧化脂质 ;葡萄籽原花青素对正常小鼠在Morris水迷宫法测试中 ,对小鼠定位航行SPL无明显影响 ,对休息30d后的小鼠空间搜索的CPT和CPP均有提高作用。结论　葡萄籽原花青素能改善D 半乳糖所致衰老小鼠的学习记忆能力 ;能明显增强正常小鼠信息的保持和再现能力。作用机制可能与其能降低血液和脑组织中过氧化脂质有关。

Effects of GSP on learning and memory in mice

Aim To study effects of grape seed proanthocyanidin (GSP) on learning and memory in mice. Methods After po GSP 10,20,40 mg·kg -1 respectively and contemporaneously sc D-galactose 1.25 g·kg -1 for 6 weeks, step down test and Y-type electric maze were used to examine the efficacy of GSE on learning and memory of mice first. Then lipoperoxide(LPO) level in blood and brain of these mice was measured. After po GSP 10,20,40 mg·kg -1 respectively for 2 weeks, the ability of learning and memory was measured by Morris Water Maze task. Results GSP significantly prolonged step-down latency in the mice and decreased number of errors in 5 minutes in step down test; and significantly decreased number of errors of these mice in Y-type electric maze test. LPO level in blood and brain of these mice was lower than that of model group. GSP also increased crossing platform times(CPT) and crossing platform percentages(CPP) in normal mice rested for 30 days in morris water maze test. Conclusion GSP can elevate the ability of learning and memory in mice treated with D-galactose, also improve memory retrieval at the spatial probe trials in normal mice. Mechanisms of these actions may probably be attributable antioxidative activity of GSP.