摘要
目的探讨齐墩果酸(OA)对T2DM大鼠肾脏保护作用及可能机制。方法35只SD大鼠随机选取25只构建T2DM大鼠模型,建模后剩余20只,分为T2DM组(n=6)、低剂量OA组(LOA,n=6)、高剂量OA组(HOA,n=8),另外10只为正常对照(NC)组。比较各组生化指标、24 h尿量及UAlb,油红O染色观察肾脏脂质沉积情况,Western blot法检测肾脏腺苷酸活化蛋白激酶(AMPK)、p-AMPK和过氧化物酶体增殖激活受体γ共激活因子1α(PGC-1α)蛋白表达。结果与NC组比较,T2DM组24 h尿量、FPG、TG、TC、LDL-C、血肌酐(Scr)、血尿酸(SUA)、24 hUAlb升高(P<0.05),体重、HDL-C、p-AMPK、PGC-1α蛋白表达降低(P<0.05)。与T2DM组比较,LOA、HOA组HDL-C、p-AMPK、PGC-1α蛋白表达升高(P<0.05),24 h尿量、FPG、TG、TC、LDL-C、Scr、SUA、24 hUAlb降低(P<0.05)。与LOA组比较,HOA组HDL-C、p-AMPK、PGC-1α蛋白表达升高(P<0.05),24 h尿量、FPG、TG、TC、LDL-C、Scr、SUA、24 hUAlb降低(P<0.05)。与NC组比较,T2DM组肾小管上皮细胞内可见大量红色染色的脂滴沉积。与T2DM组比较,LOA、HOA组脂滴沉积均减少,HOA组改善更显著。结论OA能减轻T2DM大鼠肾脏损伤,可能与激活AMPK/PGC-1α通路相关。
Objective To investigate the protective effect and mechanism of oleanolic acid(OA)on kidneys in rats with type 2 diabetes mellitus(T2DM).Methods A total of 35 Sprague-Dawley(SD)rats were enrolled in this study.25 SD rats were randomly selected to establish T2DM model,after modeling,20 rats remained and divided into T2DM group(n=6),low-dose oleanolic acid group(LOA,n=6)and high-dose oleanolic acid group(HOA,n=8).And ten rats were selected as normal control group(NC,n=10).The biochemical indicators,24 h urine volume and 24 h urinary microalbumin(UAlb)were compared among the four groups.Renal lipid deposition was evaluated by Oil red O staining.The protein expressions of Adenosine 5'-monophosphate-activated protein kinase(AMPK),p-AMPK and peroxisome proliferator-activated receptorγcoactivator-1α(PGC-1α)were detected by Western blot.Results Compared with the NC group,the levels of 24 h urine volume,fasting blood glucose(FPG),serum total cholesterol(TC),triglyceride(TG),low density lipoprotein cholesterol(LDL-C),serum creatinine(Scr),serum uric acid(SUA)and 24 hUAlb were increased(P<0.05),while the body weight,high density lipoprotein cholesterol(HDL-C),p-AMPK and PGC-1αwere decrease in the T2DM group(P<0.05).Compared with the T2DM group,the expressions of HDL-C,p-AMPK and PGC-1αwere increased(P<0.05),while the levels of 24 h urine volume,FPG,TG,TC and LDL-C,Scr,SUA and 24 hUAlb were decreased in the LOA and HOA groups(P<0.05).Compared with LOA group,the expressions of HDL-C,p-AMPK and PGC-1αwere increased(P<0.05),while the levels of 24 h urine volume,FPG,TG,TC,LDL-C,Scr,SUA and 24 h UAlb were decreased in the HOA group(P<0.05).Compared with the NC group,a large number of red-stained lipid droplets were deposited in the renal tubular epithelial cells in the T2DM group.Compared with the T2DM group,the lipid droplet deposition was reduced in the LOA and HOA groups,and the improvement was more significant in the HOA group.Conclusion OA can alleviate renal injury in T2DM rats,which may be linked to activation of AMPK/PGC-1αpathway.
作者
刘宇
胡志娟
邢邯英
康林
陈杏
刘冰
牛凯
LIU Yu;HU Zhijuan;XING Hanying(Graduate School of Hebei Medical University,Shijiazhuang 050017,China)
出处
《中国糖尿病杂志》
CAS
CSCD
北大核心
2024年第3期210-214,共5页
Chinese Journal of Diabetes
关键词
糖尿病肾脏疾病
齐墩果酸
糖尿病
2型
脂质代谢
Diabetic kidney disease
Oleanolic acid
Diabetes mellitus,type 2
Lipid metabolism
作者简介
通信作者:胡志娟,Email:huzhijuan1972@163.com。
