Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (49): 8488-8497.doi: 10.3969/j.issn.2095-4344.2013.49.005

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Mobilization of autologous bone marrow stem cells is involved in cell apoptosis and proliferation following renal ischemia-reperfusion injuries

Bi Ling-yun1, Yang Da-sheng1, Zhao De-an1, Liang Bin1, Zhang Rui-xia1, Bai Hai-tao2   

  1. 1Department of Pediatrics, the First Affiliated Hospital of Xinxiang Medical University, Weihui  453100, Henan Province, China
    2Department of Pediatrics, the First Affiliated Hospital of Xiamen University, Xiamen  361003, Fujian Province, China
  • Revised:2013-09-20 Online:2013-12-03 Published:2013-12-03
  • Contact: Yang Da-sheng, Professor, Chief physician, Department of Pediatrics, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan Province, China yds0811@126.com
  • About author:Bi Ling-yun☆, M.D., Lecturer, Attending physician, Department of Pediatrics, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan Province, China woailtt2006@163.com
  • Supported by:

     the Medical Technology Tackle Key Project of Henan Province in 2006, No. 89*; Open Topics of Provincial Key Disciplines in Xinxiang Medical College in 2009 (7th Batch), No. ZD200909*

Abstract:

BACKGROUND: Bone marrow stem cells are defined by their multi-potential ability, and can be differentiated into intrinsic cells in the kidney.
OBJECTIVE: To study the effects of mobilizing autologous bone marrow stem cells by granulocyte colony-stimulating factor plus stem cell factor on cell apoptosis and proliferation of rats with renal ischemia-reperfusion injury.  
METHODS: Totally 160 male Sprague-Dawley rats were randomly divided into four groups: control group, model group, cytokine treatment group, cytokine control group. Rat models of unilateral renal ischemia-reperfusion injury were established in the model and cytokine treatment groups. Rats in the cytokine treatment group and cytokine control group received subcutaneous injection of granulocyte colony-stimulating factor (50 μg/kg) and stem cell factor (200 μg/kg), once a day, for 5 continuous days. Rats in the model and control groups had no treatment. Apoptotic cells were detected by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling method, and the expression of CD34-positive cells, Caspase-3, Bcl-2, proliferating cell nuclear antigen in the kidney were measured using immunohistochemistry staining.
RESULTS AND CONCLUSION: The number of CD34-positive cells in renal tissue of the cytokine treatment group was significantly higher than that of the control group and model group (P < 0.05). The apoptotic index and expression of Capase-3 in the model group and cytokine treatment group were higher than those in the control group and cytokine control group (P < 0.05). The apoptotic index and expression of Capase-3 in the cytokine treatment group were lower than that in the model group (P < 0.05). The expression of Bcl-2 in the model group and cytokine treatment group was higher than that in the control group and cytokine control group (P < 0.05). The expression of Bcl-2 in the cytokine treatment group was higher than that in the model group (P < 0.05); however, as time went on, Bcl-2 expression was obviously decreased. Proliferating cell nuclear antigen expressed both in the model group and in the cytokine treatment group. Additionally, the proliferative index reached peak at 24 days in the model group, and then decreased gradually; while in the cytokine treatment group, it reached the peak at 10 days, maintained a high level until the 17th day, and then decreased gradually. Mobilization of autologous bone marrow stem cells by combination of granulocyte colony-stimulating factor and stem cell factor can increase proliferation and decrease apoptosis of renal tubular epithelial cells after renal ischemia-reperfusion injury, and thus, promote the recovery from renal tubular injury.


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: stem cells, kidney, ischemia-reperfusion injury, reperfusion injury, stem cell factor, granulocyte colony-stimulating factor

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