Effect and mechanism of umbilical cord blood stem cells in the treatment of stroke / 中国组织工程研究

ABSTRACT

BACKGROUND: Studies have confirmed that umbilical cord blood stem cells can improve the neurologicalfunction after stroke, but the mechanism of umbilical cord blood stem cells in the treatment of stroke is unclear.OBJECTIVE: To review the effect and mechanism of umbilical cord blood stem cells in the treatment of stroke.METHODS: The first author searched PubMed and CNKI databases for relevant articles published from January2005 to December 2015 using key words of umbilical cord blood stem cells, stroke in English and Chinese,respectively. RESULTS AND CONCLUSION: With the further research on the neural differentiation of umbilical cord blood stem cells,umbilical cord blood stem cells have become a hot research topic in the field of neural system disease therapy. Atpresent, some experimental studies on cell transplantation for stroke have achieved ideal curative effects. However, themechanism of umbilical cord blood stem cells in the treatment of stroke is not clear. Known therapeutic mechanismsinclude the recombination of blood vessels, nerve loops and other damage tissue structures, secretion of variousnutritional factors to reduce endogenous apoptosis, promotion of endogenous blood vessels and nerve regeneration, etc.But the following problems need to be further studied, including whether the transplanted cells can be fully filled toreplace necrotic nerve cells and promote recovery of nerve function; how these survived stem cells establish the neuralconnections; how these transplanted cells reduce the apoptosis and necrosis of the host cells to restore the cell function.