实用医学杂志 ›› 2021, Vol. 37 ›› Issue (23): 2971-2976.doi: 10.3969/j.issn.1006⁃5725.2021.23.003

• 基础研究 • 上一篇    下一篇

脂肪干细胞联合右旋美托咪定对大鼠急性肾缺血再灌注损伤的保护作用

张建波1 林楚妍1 万丽1 徐世元2   

  1. 1 广州医科大学附属第二医院疼痛科(广州 510260);2 南方医科大学珠江医院麻醉科(广州 520280)

  • 出版日期:2021-12-10 发布日期:2021-12-10
  • 通讯作者: 徐世元 E⁃mail:xsy998@smu.edu.cn
  • 基金资助:
    国家自然科学基金面上项目(编号:81771182);广东省自然科学基金面上项目(编号:2016A030313599);广州医科大学附属第二医院临床研究项目(编号:020Q055031)

Protective effect of adipose⁃derived mesenchymal stem cells combined with dexmedetomidine for acute isch⁃ emia ⁃reperfusion injury in rats

ZHANG Jianbo*,LIN Chuyan,WAN Li,XU Shiyuan.   

  1. Department of Pain the Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510260China
  • Online:2021-12-10 Published:2021-12-10
  • Contact: XU Shiyuan E⁃mail:xsy998@smu.edu.cn

摘要:

目的 评估脂肪干细胞联合右旋美托咪定对大鼠急性肾缺血再灌注损伤的保护作用。 方法 雄性 SD 大鼠 40 只,随机分为五组:Sham 组、肾缺血再灌注损伤组(IR 组)、右旋美托咪定处理组 (IR + DEX 组)、脂肪干细胞处理组(IR + ADSCs 组)和联合处理组(IR + DEX + ADSCs 组)。分离培养脂肪 干细胞,建立大鼠肾缺血再灌注模型,按分组给予尾静脉注射 ADSCs(1 × 106)或及腹腔注射右旋美托咪定 (25 μg/kg)。分别于 0、24、96 h 采血检测肾功能指标:血肌酐(Scr)、尿素氮(BUN)水平,同时检测尿蛋白 (UP)及尿肌酐(UC)的含量,并计算其比值(UP/UC);于 96 h 麻醉下处死大鼠,取肾组织行 HE 染色及组织 病理损伤评分。结果 与 IR 组比较,IR+DEX 组或 IR+ADSCs 组 Scr、BUN 及 UP/UC 降低(< 0.05),同时肾组织病理损伤评分显著改善(< 0.05);与 IR+DEX 组或 IR+ADSCs 组比较,IR+DEX+ADSCs 组上述指标 进一步降低(< 0.05)。结论 在大鼠急性肾缺血再灌注损伤模型中,与单独使用 ADSCs 或右旋美托咪 定比较,两者联合使用具有更好的肾脏保护作用。

关键词:

肾脏缺血再灌注, 右旋美托咪定, 脂肪干细胞, 肾功能

Abstract:

Objective To assess the protective effect of adipose⁃derived mesenchymal stem cells(ADSCs combined with dexmedetomidine on acute ischemia⁃reperfusion injury(IRI)in rats. Methods Fortyadult healthy SD male rats were randomly divided into sham⁃operated group,ischemia reperfusion injury group(IR group), dexmedetomidine⁃treated group(IR+DEX group),ADSCs⁃treated group(IR+ADSCs group)and dexmedetomidine combined with ADSCs⁃treated group(IR+DEX+ADSCs group). Isolated ADSCs were cultured in suitable incuba⁃ tion conditions and the IRI model in rats was established. The rats received cell suspension of ADSCs(1 × 106 through tail vein or/and received intraperitoneal injection of dexmedetomidine 25 μ g/kg in different groups. The plasma samples of each group were harvested for determining the level of serum creatinine(Scr)and blood urea nitrogen(BUN)at 0,24 h and 96 h. Urine samples of rats of each group were collected at the same time for detecting urine protein(UP)and urine creatinine(UC),and calculating the ratio of urine protein/ creatinine (UP/UC). The rats were euthanized after anesthetization and kidney specimens were collected for HE staining at 96 h after the experimental treatment,and the histopathology injury of kidney were scored. Results When compared with that in IR group,the level of Scr,BUN and UP/UC decreased significantly in IR+DEX group and IR+ADSCs group(P < 0.05),meanwhile the injury of kidney was also significantly reduced in two groups. When compared with that in IR+DEX group and IR+ADSCs group,the above indicators in IR+DEX+ADSCs group further decreased and was statistically significant(P < 0.05). Conclusion In rat model of acute renal ischemia⁃reperfusion injury the combination of ADSCs with dexmedetomidine has better renal protection effect when compared with single ADSCs or dexmedetomidine treatment. 

Key words:

kidney ischechemia?reperfusion, dexmedetomidine, adiposed?derived mesenchymal stem cells, renal function