舒洛地特对糖尿病大鼠肾脏的保护作用及抗氧化反应机制

目的 探讨舒洛地特对糖尿病大鼠肾脏的保护作用及其相关机制.方法 将33只SpragueDawley大鼠随机分为正常对照组、糖尿病组和舒洛地特组,每组11只.造模后12周终止实验处死大鼠.取血、尿和肾脏标本,测定尿量、体质量、肾脏质量/体质量、血糖、糖化血红蛋白;测定血液和肾脏组织的丙二醛(MDA)和超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱苷肽过氧化物酶(GSH-PX)的活性;通过电镜观察肾脏超微结构的变化.结果 12周终止实验时糖尿病各组大鼠的尿量、肾脏质量/体质量、血糖、HbAlc、血清和肾脏组织的MDA水平均明显高于正常组,而体质量、血清和肾脏组织的SOD、CAT、GSH-PX活性明显低于正常组(P<0.05);舒洛地特组大鼠的血清和肾脏组织的MDA水平明显低于糖尿病组,而SOD、CAT、GSH.PX的活性高于糖尿病组(P<0.05).电镜显示模型组大鼠肾基底膜增厚,厚薄不均,上皮细胞内线粒体空化,舒洛地特组大鼠的肾脏组织超微结构损伤明显减轻.结论 舒洛地特有效降低糖尿病大鼠尿微量白蛋白含量、改善肾脏超微结构、防止基底膜增厚、保护肾小球滤过屏障,减轻糖尿病大鼠肾脏损害的进展,其机制可能与舒洛地特抑制糖尿病大鼠过氧化反应和提高抗氧化能力有关.

Renal protective effects of sulodexide in diabetic rats and its anti-oxidative mechanism

Objective To investigate the renal protective effects of sulodexide and its anti-oxidative stress mechanism in diabetic rats. Methods Thirty male SD rats were randomized into 3 equal groups, namely the control group, diabetic group, and sulodexide treatment group. Twelve weeks after establishment of rat diabetic models and administration of sulodexide, the rats were sacrificed for measurement of the urine volume, body mass, kidney mass/body weight ratio, plasma glucose, and glycosylated hemoglobin (HbA1c). ...