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地红方通过miR-133b/DUSP1/JNK通路干预糖尿病肾病氧化应激损伤

2024-05-21林姿何卫东杜思哲

云南中医中药杂志 2024年5期
关键词:氧化应激剂量血清

林姿 何卫东 杜思哲

*基金项目:福建省自然科学基金(2021J01896);福建省卫生健康青年科研课题(2021QNA054)

第一作者简介:林姿(1987-),女,主治医师,研究方向:糖尿病及其并发症中医药防治。

摘要:目的  研究地红方对糖尿病肾病细胞模型氧化应激损伤的影响。方法  地红方含药血清制备,小鼠肾小球系膜细胞常规培养、传代。按以下分组:对照组(5.5mmol/L葡萄糖+正常血清)、高糖组(30mmol/L葡萄糖+正常血清)、地红方低剂量组(30mmol/L葡萄糖+5%地红方含药血清)、地红方中剂量组(30mmol/L葡萄糖+10%地红方含药血清)、地红方高剂量组(30mmol/L葡萄糖+20%地红方含药血清)。采用实时荧光定量PCR检测miR-133b、DUSP1 mRNA表达。Western blotting检测DUSP1、p-JNK、Drp1、Fis1蛋白表达。Elisa检测SOD、MDA表达。结果  与高糖组比较,地红方组miR-133b、MDA、p-JNK、Drp1、Fis1表达明显下降(P<0.05),而DUSP1、SOD表达显著升高(P<0.05)。结论  地红方可通过miR-133b/DUSP1/JNK通路调控线粒体分裂改善糖尿病肾病氧化应激损伤。

关键词:地红方;糖尿病肾病;miR-133b;DUSP1;JNK;氧化应激

中图分类号:R587.1    文献标志码:A    文章编号:1007-2349(2024)05-0080-05

Study on the Intervention of Didong Decoction on Oxidative Stress Injuryof Diabetic Nephropathy through miR-133b/DUSP1/JNK Pathway

LIN Zi, HE Wei-dong, DU Si-zhe

(The Peoples Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350004, China)

【Abstract】Objective: To study the effect of Dihong Decoction on oxidative stress injury of diabetic nephropathy cell model. Methods: The serum containing Dihong Decoction was prepared, and mouse mesangial cells were cultured and passed through routine. Groups were divided as follows, control group (5.5mmol/L glucose+normal serum), high glucose group (30mmol/L glucose+normal serum), low dose Dihong Decoction group (30mmol/L glucose+5% Dihong Decoction containing serum), medium dose Dihong Decoction group (30mmol/L glucose+10% Dihong Decoction containing serum), and high dose Dihong Decoction group (30mm ol/L glucose +20% Dihong Decoction containing serum). Real-time fluorescent quantitative PCR was used to detect the mRNA expression of miR-133b and DUSP1. Western blotting to detect the expression of DUSP1, p-JNK, Drp1 and Fis1 proteins. The expressions of SOD and MDA were detected by Elisa. Results: Compared with that of the high glucose group, the expressions of miR-133b, MDA, P-JNK, Drp1 and Fis1 in Dihong Decoction groups were significantly decreased (P<0.05), while the expressions of DUSP1 and SOD were significantly increased (P<0.05). Conclusion: Dihong Decoction can regulate mitochondrial division through miR-133b/DUSP1/JNK pathway to improve oxidative stress injury in diabetic nephropathy.

【Key words】Dihong Decoction; Diabetic Nephropathy; miR-133b; DUSP1; JNK; Oxidative Stress

糖尿病腎病(diabetic nephropathy,DN)是由糖尿病(diabetes mellitus,DM)所致的慢性肾脏病(chronic kidney disease,CKD),已成为 CKD 和终末期肾病的主要病因,增加了 DM 的死亡率[1-2],因此及时防治对于延缓 DN具有极其重大意义。地红方(滋阴活血调糖饮)是我院多年来用于防治 DN 验方,临床效果显著。地红方由六味地黄汤、桃红四物汤化裁而来,滋阴活血之力强,可作为 DN 滋阴活血的代表方。我们团队在前期临床研究中表明地红方可改善DM患者氧化应激指标及炎症因子[3],发现地红方能够改善DM血管内皮细胞氧化应激损伤[4]。在前期研究的基础上,本研究探讨地红方基于miR-133b/双特异性磷酸酶1(dual specificity phosphatase 1,DUSP1)/c-Jun氨基端激酶(c-Jun N-terminal kinase,JNK)通路调控线粒体分裂改善DN氧化应激损伤的机制。

1  材料与方法

1.1  实验动物  SPF 级雄性SD大鼠14只,体质量(180±20)g,适应性喂养1周后,分笼饲养。……

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