人参皂苷Rg1对运动性疲劳小鼠脑氨基酸含量的影响

目的:探讨人参皂苷Rg1在运动性中枢疲劳中的作用机制,并研究其剂量效应关系. 方法:健康雄性昆明种小鼠,按体质量随机分为六组:即对照组和人参皂苷Rg1 5、10、20、40和80 ms/kg的5个剂量组,每组20只.每天分别用蒸馏水和5、10、20、40和80 ms/kg的人参皂苷Rg1灌胃.2周后,进行负重力竭游泳实验和无负重游泳90 min实验,测定力竭游泳时间以及无负重游泳后,脑组织中氨基酸含量的变化. 结果:与空白运动对照组相比,5、10和20 ms/kg人参皂苷Rgl组,脑组织中支链氨基酸(BCAA)含量和BCAA/AAA比值显著升高(P<0.01、P<0.01和P<0.05),而5、10、20和40 ms/kg人参皂苷Rg1组,脑组织中芳香族氨基酸(AAA)含量显著降低(P<0.01、P<0.05、P<0.05和P<0.05),其中色氨酸(Trp)含量,各组均显著降低(P<0.01);5和10 mg/kg组谷氨酸(Glu)含量显著降低(P<0.01和P<0.01),而天冬氨酸(Asp)、甘氨酸(Gly)各组间未见显著性差异.各组力竭游泳时间均有延长,其中5 ms/kg组(P<0.01)、10 ms/kg组(P<0.01)、20 ms/kg组(P<0.05),差异均有显著性意义. 结论:人参皂苷Rg1具有抑制中枢性疲劳,提高运动耐力的作用,以中低和低剂量效果最佳.

Effects of ginsenoside Rg1 on free amino acids in brain of sports fatigue-mice

Objective: To study the effect and possible mechanism of Ginsenoside Rg1 in sports CNS fatigue and dose-response relationship.Methods: Kun Ming male mice were divided randomly into 6 groups: control group and five different doses groups(5,10,20,40,80 mg/kg).They were treated orally with Ginsenoside Rg1 for 2 weeks.The levels of amino acids of brain tissue were tested after swimming for 90 min and the exhaustive swimming time were recorded.Results: The levels of BCAA and the ratio of BCAA/AAA in groups 5,10 ...