硫化氢对2型糖尿病大鼠胰岛素抵抗和脂代谢的影响  被引量:3

Effects of hydrogen sulfide on insulin resistance and lipid metabolism in type 2 diabetic mellitus rats

在线阅读下载全文

作  者:胡军[1] 朱琳[1] 杨少娟[1] 许腾[1] 高啸[1] 周军[2] 

机构地区:[1]华中科技大学同济医学院附属梨园医院内分泌科,武汉430077 [2]武汉市第一医院心血管内科

出  处:《中华实验外科杂志》2015年第1期54-56,F0004,共4页Chinese Journal of Experimental Surgery

基  金:湖北省自然科学基金资助项目(2012FFB02317)

摘  要:目的 观察硫化氢对2型糖尿病(T2DM)大鼠胰岛素抵抗和脂代谢的影响.方法 65只大鼠采用高糖高脂饮食+腹腔注射链脲佐菌素(STZ)的方法建立T2DM模型,将45只成模大鼠随机分为糖尿病(DM)、DM+硫氢化钠(NaHS)和DM+ DL-炔丙基甘氨酸(PAG)组,每组各15只,另设正常对照组.DM+ NaHS组大鼠腹腔注射NaHS[56 μmol/(kg·d)],DM+ PAG组腹腔注射PAG[50 mg/(kg·d)],对照组和DM组给予相同体积的生理盐水,连续给药2周.给药结束后,测定大鼠空腹血糖(FBG)、胰岛素(FIns)、甘油三酯(TG)、总胆固醇(TC)、游离脂肪酸(FFA),计算胰岛素抵抗指数(HOMA-IR)、胰岛素敏感指数(ISI);测定胰腺组织中硫化氢(H2S)浓度,免疫组织化学方法检测胰腺组织胰岛素表达.结果 与对照组比较,DM组大鼠FBG[(18.22±3.99) mmol/L]、TG[(1.54 ±0.16) mmol/L]、TC[(3.27±0.38) mmol/L]、FFA[(504.68±37.70) μmol/L]水平及HOMA-IR升高(P<0.05),FIns[(41.79±3.43) mU/L]和ISI(-6.57 ±0.37)降低,胰腺组织H2S浓度[(96.98±19.44) μmol/L]升高,胰腺组织胰岛素阳性表达细胞面积(AIEP)和胰岛素阳性染色率(PRSI)降低,差异均有统计学意义(P<0.05);与糖尿病组比较,NaHS干预后,糖尿病大鼠FBG[(25.42 ±0.21) mmol/L]、TG[(2.40 ±0.21) mmol/L]、TC[(4.80 ±0.16) mmol/L]、FFA[(633.96±25.64)μmol/L]水平及HOMA-IR升高更明显,FIns[(29.36±2.65) mU/L]和ISI(-6.58±0.27)降低,胰腺组织H2S浓度[(134.50±12.70)μmol/L]明显升高,AIEP和PRSI降低,差异均有统计学意义(P<0.05);应用PAG后,糖尿病大鼠血浆FBG[(10.83±1.10) mmol/L]、TG[(1.30±0.12) mmol/L]、TC[(2.79 ±0.33) mmol/L]、FFA[(383.39±69.00) μmol/L]水平明显降低,胰岛素抵抗改善,FIns[(51.58±1.49) mU/L]和ISI(-6.32±0.11)明显升高,胰腺组织H2S浓度[(71.48±10.94) μmol/L]明显降低,AIEP和PRSI增加.结论 Objective To investigate the effects of hydrogen sulfide on insulin sensitivity and lipid metabolism in type 2 diabetic rat model.Methods The type 2 diabetes mellitus (T2DM) rat model was established by high-fat and high-glucose diet and low-dose intraperitoneal injection of stretopzin (STZ).The model rats were randomly divided into diabetes(DM) group (n =15),DM + NaHS group (n =15),and DM + DL-propargylglycine(PAG) group (n =15),and the normal control group was set up (n =15).The animals in DM + NaHS group were given NaHS [56 μmol/(kg·d)],those in DM +PAG group given PAG [50 mg/(kg·d)],and those in control and DM groups given the same volume of saline for 2 weeks.Behavioral characteristics were observed in all groups.The serum levels of fasting blood glucose (FBG) and insulin (FIns),triglycerides (TG),total cholesterol (TC),free fatty acid (FFA) and hydrogen sulfide (H2S) concentrations in the diabetic models were measured to calculate HOMA-IR and ISI.H2S concentrations in pancreatic tissue were measured.The expression of insulin was detected by immunohistochemistry in pancreatic tissue.Results The typical symptoms of diabetes were observed in T2DM rats.As compared with control group,plasma FBG [(18.22 ± 3.99) mmol/L],TG [(1.54 ±0.16) mmol/L],TC [(3.27 ± 0.38) mmol/L],FFA [(504.68 ± 37.70) μmol/L] levels and HOMA-IR were significantly increased in DM group; FIns [(41.79 ±3.43) mU/L] and ISI (-6.57 ±0.37) were significantly decreased,H2S concentration [(96.98 ± 19.44) μmol/L] in pancreatic tissue was significantly increased,and the areas of insulin-expression positive cells and positive rate of insulin staining cells were significantly decreased (P 〈 0.05).As compared with DM group,plasma FBG [(25.42±0.21) mmol/L],TG [(2.40 ±0.21) mmol/L],TC [(4.80 ±0.16) mmol/L],FFA [(633.96 ±25.64) μmol/L] levels and HOMA-IR were significantly increased in DM + NaHS group; FIns [(29.36 �

关 键 词:硫化氢 糖尿病 胰岛素抵抗 脂代谢 

分 类 号:R587.1[医药卫生—内分泌]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象