中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (32): 5146-5151.doi: 10.3969/j.issn.2095-4344.2014.32.011

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

内皮祖细胞修复缺血再灌注大鼠肾损伤

周丽娜1,王玉新1,方  林2,武  挺1,余  毅3   

  1. 1厦门市第二医院肾内科,福建省厦门市   361021;2厦门大学附属中山医院泌尿外科,福建省厦门市  361004;3解放军南京军区福州总医院血液净化室,福建省福州市   350025
  • 收稿日期:2014-06-20 出版日期:2014-08-06 发布日期:2014-09-18
  • 通讯作者: 方林,硕士,副主任医师,厦门大学附属中山医院泌尿外科,福建省厦门市 361004
  • 作者简介:周丽娜,女,1982年生,福建省厦门市人,汉族,2008年福建医科大学毕业,硕士,主治医师,主要从事肾脏病学的研究。

Endothelial progenitor cells repair ischemia-reperfusion injury in rats

Zhou Li-na1, Wang Yu-xin1, Fang Lin2, Wu Ting1, Yu Yi3   

  1. 1Department of Nephrology, Second Hospital of Xiamen City, Xiamen 361021, Fujian Province, China; 2Department of Urinary Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, Fujian Province, China; 3Department of Hemopurification, Fuzhou General Hospital of Nanjing Military Command of Chinese PLA, Fuzhou 350025, Fujian Province, China
  • Received:2014-06-20 Online:2014-08-06 Published:2014-09-18
  • Contact: Fang Lin, Master, Associate chief physician, Department of Urinary Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, Fujian Province, China
  • About author:Zhou Li-na, Master, Attending physician, Department of Nephrology, Second Hospital of Xiamen City, Xiamen 361021, Fujian Province, China

摘要:

背景:内皮祖细胞在损伤信号的诱导刺激下能被招募到血管损伤局部,分化为成熟内皮细胞,参与血管新生和内皮修复。
目的:验证内皮祖细胞能否促进缺血再灌注大鼠肾损伤的修复。
方法:抽取大鼠外周血,采用密度梯度离心的方法分离、培养内皮祖细胞。22只雄性SD大鼠随机分为3组,缺血再灌注组采用右肾摘除左肾蒂夹闭左肾动脉、静脉40 min后松开制备缺血再灌注模型;正常对照组除未给予左肾动静脉夹闭外,余操作同缺血再灌注组模型组;内皮祖细胞组动物同样制备缺血再灌注模型,夹闭40 min后从左肾动脉移植内皮祖细胞(5×109 L-1,共1 mL)至左肾,缺血再灌注组予注射同等剂量的细胞培养液。于术后第1天收获3组大鼠肾脏和血标本。流式细胞仪及细胞免疫荧光鉴定内皮祖细胞表面标志(CD34/血管内皮生长因子受体2);测定血尿素氮和肌酐;行免疫组织化学观察各组CD34表达情况。
结果与结论:与正常对照组比较,缺血再灌注组大鼠的尿素氮、肌酐均明显升高,肾组织CD34表达减少(P < 0.05);给予内皮祖细胞治疗后,缺血再灌注组大鼠的尿素氮、肌酐较治疗前明显下降,肾组织血管内皮细胞标志物CD34的表达较治疗前明显增加(P < 0.05)。结果证实内皮祖细胞移植可促进缺血再灌注大鼠肾脏损伤的修复。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

关键词: 干细胞, 移植, 内皮祖细胞, 外周血, 缺血再灌注损伤, 内皮细胞, 肾脏, 尿素氮, 肌酐, CD34

Abstract:

BACKGROUND: Endothelial progenitor cells are recruited into local vascular injury under the injury-induced stimulation, and then differentiate into mature endothelial cells that are thereby involved in angiogenesis and endothelial repair.
OBJECTIVE: To investigate whether endothelial progenitor cells can alleviate renal injury and improve renal function of ischemia/reperfusion injury (I/R) rats.
METHODS: Peripheral blood samples extracted from Sprague-Dawley rats were used to isolate and culture endothelial progenitor cells using density gradient centrifugation. Twenty-two male Sprague-Dawley rats were randomized to three groups: I/R group, normal control group, and endothelial progenitor cells group. In the I/R and endothelial progenitor cells groups, the right kidney was removed and the renal artery and vein of the left kidney were occluded for 40 minutes to establish I/R models in the rats, and then endothelial progenitor cells (5×109/L, totally 1 mL) or solvent was transplanted via the artery of the left kidney into the left kidney. In the normal control group, the experimental procedure was same as that in the I/R group except for occlusion of the  
artery and vein of the left kidney. Renal and blood samples from three groups were collected at day 1 after operation. Peripheral blood CD34 and vascular endoethelial growth factor receptor 2 expressions were determined using flow cytometry and immunofluorescence methods, serum creatinine and urea nitrogen were tested, and immunohistochemistry observation was used for CD34 observation.
RESULTS AND CONCLUSION: Compared with the normal control group, serum creatinine and urea nitrogen levels were significantly increased, and tubulointerstitial CD34 expression was decreased in the I/R group (P < 0.05). Endothelial progenitor cells treatment largely decreased the levels of serum creatinine and urea nitrogen, and increased CD34 expression (P < 0.05). These findings indicate that transplantation of endothelial progenitor cells contributes to renal protection in I/R rats.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: endothelial cells, reperfusion injury, kidney, blood urea nitrogen

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