红参中精氨酸双糖苷对小鼠的抗疲劳作用

目的：观察小鼠强迫性游泳诱发的疲劳现象，探讨红参中非皂苷类物质——精氨酸双糖苷（AFG）对小鼠的抗疲劳作用及其初步机制。方法：从红参中分离出AFG提取物，将80只ICR小鼠分为空白对照组，低、中和高剂量（100、200和400 mg·kg^-1） AFG组，每组20只，连续灌胃给药28 d后对小鼠进行强迫性游泳实验，检测各组小鼠体质量，脏器指数，强迫性游泳时间，乳酸（LD）、尿素氮（BUN）、肝糖原（Gly）水平及腓肠肌中PGC-1α基因表达水平。结果：与空白对照组比较，低、中和高剂量AFG组小鼠的体质量和脏器指数差异无统计学意义（P > 0.05）；与空白对照组比较，低、中和高剂量AFG组小鼠强迫性游泳时间、Gly水平和PGC-1αmRNA基因表达水平均明显增加（P < 0.05或P < 0.01），且呈剂量依赖性；与空白对照组比较，低、中和高剂量AFG组小鼠血清中的LD和BUN水平明显降低（P < 0.01）。结论：AFG对小鼠有抗疲劳作用，其机制可能与能量代谢有关。

Anti-fatigue effect of arginyl fructosyl glucose from red ginseng in mice

Objective:To investigate the anti-fatigue phenomenon induced by forced swimming in the mice,and to explore the anti-fatigue effect of argininyl fructoyl glucose (AFG) from red ginseng in the mice and its mechanism.Methods:The AFG was extracted from red ginseng.The ICR mice were divided into blank control group,low dose of AFG group (100 mg · kg-1),middle dose of AFG group (200 mg · kg-1) and high dose of AFG group (400 mg · kg-1) (n=20).The mice mere given a forced swimming test after continuous gavage for 28 d.The weights,organ indexes,time of forced swimming,contents of lactic acid (LD),blood urea nitrogen (BUN),hepatic glycogen (Gly) and expressing levels of PGC-1α in gastrocnemius of the mice in various groups were detected.Results:Compared with blank control group,the weights and organ indexes of the mice in low,middle and high doses of AFG groups had no significant differences (P＞ 0.05).Compared with blank control group,the time of forced swimming,contents of Gly and expressing levels of PGC-1α of the mice in low,middle and high doses of AFG groups were significantly increased (P＜0.05 or P＜0.01) in a dose-dependent manner.Compared with blank control group,The contents of LD and BUN in serum of the mice in low,middle and high doses of AFG groups were significantly decreased (P＜0.01).Conclusion:AFG has anti-fatigue effect in mice,and its mechanism may be related to energy metabolism.