Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (50): 8108-8113.doi: 10.3969/j.issn.2095-4344.2015.50.013

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Ginkgo-damole injection combined with bone marrow mesenchymal stem cell transplantation improves neurologic recovery from cerebral infarction

Yang Chao-yang   

  1. Department of General Internal Medicine, Jiyuan Municipal People’s Hospital, Jiyuan 454000, Henan Province, China
  • Received:2015-10-19 Online:2015-12-03 Published:2015-12-03
  • About author:Yang Chao-yang, Associate chief physician, Department of General Internal Medicine, Jiyuan Municipal People’s Hospital, Jiyuan 454000, Henan Province, China

Abstract:

BACKGROUND: Reconstruction of damaged brain tissue through cell transplantation has become a new way to treat cerebral infarction. In recent years, bone marrow mesenchymal stem cells have become the new darling in cell transplantation therapy.
OBJECTIVE: To investigate the effect of ginkgo-damole injection combined with bone marrow mesenchymal stem cell transplantation to improve the neurological function of acute cerebral infarction rats and its mechanism.
METHODS: Animal models of middle cerebral artery occlusion were made in rats using suture method, and then 60 rat models were randomly divided into control group, cell transplantation group and combination group. The control group was given intravenous injection of PBS via the tail vein; the cell transplantation group was given intravenous injection of bone marrow mesenchymal stem cell suspension (2.5×109/L) via the tail vein; the combination group was given intravenous injection of bone marrow mesenchymal stem cell suspension (2.5×109/L) and ginkgo-damole injection (2 mL/kg, once a day, totally 5 days) via the tail vein. Modified 
neurological severity scores were recorded at 1, 3 days and 1, 2 weeks after transplantation. At 2 weeks after transplantation, expressions of brain-derived neurotrophic factor and growth associated protein 43 in the brain were detected using RT-PCR; cell apoptosis detected using MTT assay; BrdU positive cells counted using immunohistochemistry method.
RESULTS AND CONCLUSION: There were no differences in the modified neurologic severity scores among the three groups at 1, 3 days after transplantation (P > 0.05), but the modified neurological severity scores in the combination group were lower than those in the cell transplantation group and control group at 1, 2 weeks after transplantation (P < 0.05). The expressions of brain-derived neurotrophic factor and growth associated protein 43 in the brain were significantly higher in the combination group than the other two groups at 2 weeks after transplantation (P < 0.05); compared with the other two groups, the number of apoptotic cells was less but the number of BrdU positive cells was higher in the combination group (P < 0.05). These findings indicate that the combination of ginkgo-damole injection and bone marrow mesenchymal stem cell transplantation can increase the expressions of brain-derived neurotrophic factor and growth associated protein 43 in the brain, inhibit cell apoptosis and improve neurological function in rats with cerebral infarction. 
 

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