Effects of Different Fractions from Cortex Eucommiae on Oxidation Resistance and Anti-despondent of Extradiol-induced Kidney-yang Deficiency Mice / 浙江中医药大学学报

ABSTRACT

[Objective] To observe the effects of different fractions from Cortex Eucommiae on oxidation resistance and anti-despondent of Extradiol-induced kidney-yang deficiency mice,and understand the modern scientific connotation of the properties theories about sweet-flavor,warm-nature,meridian tropism in liver and kidney.[Methods] Healthy adult male ICR mice were divided into six groups randomly:normal control group,model control group,positive control group(Guifudihuang),three groups of Cortex Eucommiae(water fraction,n-butanol fraction,and acetoacetate fraction).Kidney-yang deficiency mice model was established with intraperitoneal injection of estradiol benzoate.The determined indexes included oxidation resistance indexes(activity of SOD,GSH-Px,CAT,content of MDA),anti-despondent indexes(tail suspension,activity of MAO),and anti-fatigue ability.[Results] Oxidation resistance indexes:Three fractions of Cortex Eucommiae all could decrease content of MDA,enhance activeness of SOD.The water and n-butanol fraction could enhance activeness of CAT.The water and acetoacetate fraction could enhance activeness of GSH-Px.Anti-despondent indexes:The acetoacetate fraction of Cortex Eucommiae could lengthen the activity time in tail suspension test,and three fractions of Cortex Eucommiae all could decrease activeness of MAO.Three fractions of Cortex Eucommiae all could lengthen the running distance and time.[Conclusion] Cortex Eucommiae could improve aging and depression caused by kidney-yang deficiency.Oxidation resistance and anti-despondent effects could be an important part of the main effective groups about sweet-flavor,warm-nature,meridian tropism in liver and kidney.The effects of water extract and n-butanol extract were closer and stronger,which could be the main substance basis of common effective groups.