Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (10): 1597-1602.doi: 10.3969/j.issn.2095-4344.2014.10.019

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Limb ischemic postconditioning promotes the proliferation of endogenous neural stem cells in rats with cerebral ischemia injury

Du Guo-jia 1,2, Dang Mu-ren2, Tan Ze-ming1, Su Ri-qing2, Shen Qian3, Fang Jia-sheng1   

  1. 1 Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China; 2 Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 3 Department of Neurosurgery, the Fourth Affiliated Hospital of Xinjiang Medical University, Urumqi 834000, Xinjiang Uygur Autonomous Region, China
  • Online:2014-03-05 Published:2014-03-05
  • Contact: Fang Jia-sheng, M.D., Chief physician, Doctoral supervisor, Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China
  • About author:Du Guo-jia, Studying for doctorate, Attending physician, Department of Neurosurgery, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China; Department of Neurosurgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Youth Science Foundation of Xinjiang Uygur Autonomous Region, No. 2011211B31

Abstract:

BACKGROUND: There are a few reports addressing application of limb ischemic preconditioning in cerebral ischemia-reperfusion injury, but few reports have addressed limb ischemic postconditioning applied in this field.
OBJECTIVE: To explore the effects of limb ischemic postconditioning on the proliferation of neural stem cells of rats after cerebral ischemia.
METHODS: Focal stroke models were established in rats, and then 30 rat models were randomly divided into experimental group (n=15) and control group (n=15). Remote limb ischemic postconditioning was applied in the experimental group, but not in the control group. 5-Bromo-2-deoxyuridine (BrdU; 50 mg/kg) was injected intraperitoneally into rat models three times a day, and then the rat brains were respectively obtained at days 5, 10 and 15 days in two groups. The amount of BrdU-positive cells was measured by immunohistochemistry method in two groups.
RESULTS AND CONCLUSION: Compared with the control group, the experimental group was significantly  decreased in the severity of injury and behavior scores (P < 0.05). At various time points, the number of BrdU-positive cells was obviously greater in the experimental group than the control group (P < 0.05). Results have indicated that limb ischemic postconditioning can improve behavior of rats and promote the proliferation of neural stem cells, thereby showing neuroprotective effects against cerebral ischemia 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, neural stem cells, ischemic postconditioning, brain injuries, cell proliferation, bromodeoxyuridine

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