Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (41): 6620-6627.doi: 10.3969/j.issn.2095-4344.2014.41.011

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Security of heterogeneous umbilical cord mesenchymal stem cells via intramuscular injection in Wistar rats

Zhang Wen-xiang1, Wang Si-ping2, Xi Hong-min3, Li Zi-pu3   

  1. 1PICU, the Women and Children Hospital of Qingdao, Qingdao 266034, Shandong Province, China; 2Department of Pediatrics, People’s Hospital of Tengzhou, Tengzhou 277500, Shandong Province, China; 3Department of Pediatrics, the Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, China
  • Revised:2014-09-07 Online:2014-10-01 Published:2014-10-01
  • Contact: Li Zi-pu, Doctoral supervisor, Professor, Department of Pediatrics, the Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, Shandong Province, China
  • About author:Zhang Wen-xiang, Master, Physician, PICU, the Women and Children Hospital of Qingdao, Qingdao 266034, Shandong Province, China
  • Supported by:

     the Scientific and Technological Plan in the Public Domain of Qingdao City

Abstract:

BACKGROUND: So far, the short-term changes of various organs after injection of umbilical cord mesenchymal stem cells have been reported, but there are few studies on the long-term changes of various organs in healthy rats after repeated intramuscular injection of umbilical cord mesenchymal stem cells.

OBJECTIVE: To observe the security of intramuscular injection of heterogeneous umbilical cord mesenchymal stem cells.
METHODS: Sixty male SPF Wistar rats were divided into six groups randomly: normal group (suspension liquid of umbilical cord mesenchymal stem cells); control group with culture solution; supernatant group (supernatant of human umbilical cord mesenchymal stem cells); low concentration group (0.25×105 human umbilical cord mesenchymal stem cells); moderate concentration group (1.0×105 human umbilical cord mesenchymal stem cells); high concentration group (4.0×105 human umbilical cord mesenchymal stem cells). Each rat was injected 0.8 mL liquid in muscle, 0.2 mL in each limb, twice at weeks 1 and 4. Biochemical tests were conducted before and after injection. At the end of 8 weeks, all the rats were killed and hematoxylin-eosin staining was done with the liver, spleen, lung, kidney, brain and muscle.
RESULTS AND CONCLUSION: There was no abnormal change about biochemical tests and hematoxylin-eosin staining after the intramuscular injection of heterogeneous umbilical cord mesenchymal stem cells. No significant alteration was observed in the liver, spleen, lung, kidney, brain, and muscle of the limb after the injection of heterogeneous umbilical cord mesenchymal stem cells under suitable concentration. These findings indicate intramuscular injection of heterogeneous umbilical cord mesenchymal stem cells at certain concentrations is safe and reliable.

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


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Key words: umbilical cord, mesenchymal stem cell transplantation, injections, intramuscular, safety

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