Salveanolic acid B promotes the mobilization and adhesion of endothelial progenitor cells

Zhao Xian-feng; Xu Yu

doi:10.3969/j.issn.2095-4344.2017.21.012

Abstract：BACKGROUND:Vascular endothelial injury usually appears following atherosclerosis, hypertension, diabetes mellitus and other diseases, which can be repaired by endothelial progenitor cells (EPCs) in the systemic circulation. OBJECTIVE:To study the effect of salveanolic acid B on the mobilization and adhesion of EPCs in mice. METHODS:Thirty C57BL/6 mice were selected and randomly divided into surgical and non-surgical groups, (n=15 per group). Common carotid arteries of mice in the surgical group were injured by iron wire, then were subdivided into three groups (n=5 per group), and were given the injection of 5% of glucose (control group), 100 g/L salveanolic acid B and 10 μmol/L vascular endothelial growth factor, respectively. Meanwhile, the mice in the non-surgical group received the same assignment and treatment, but the common carotid arteries were not injured. After consecutive 7-day administration, the EPCs in the peripheral blood of the mice were isolated, and the EPCs adhesion was tested by flow chamber experiment. The serum levels of stromal cell-derived factor-1 and interleukin-8 were detected by ELISA kits. RESULTS AND CONCLUSION:The proportion of EPCs in the surgical group was significantly increased compared with the non-surgical group (P < 0.05). After 7-day administration, the proportion of EPCs in the salveanolic acid B and vascular endothelial growth factor subgroups of the surgical group was significantly higher than that in the control subgroup (P < 0.05); the proportion of EPCs in the vascular endothelial growth factor subgroup of the non-surgical group was significantly higher than that in the control and salveanolic acid B subgroups (P < 0.05). Flow chamber experiment revealed that the number of EPCs in the salveanolic acid B subgroup was significantly more than that in the control subgroup (P < 0.05). In the surgical group, the serum levels of stromal cell-derived factor-1 and interleukin-8 in the in the salveanolic acid B and vascular endothelial growth factor subgroups were significantly higher than those in the control subgroup (P < 0.05); in the non-surgical group, the serum levels of stromal cell-derived factor-1 and interleukin-8 in the in the vascular endothelial growth factor subgroup were significantly higher than those in the control subgroup (P < 0.05). To conclude, salveanolic acid B can increase the efficiency of the EPCs mobilization in bone marrowin vivo, help the EPCs adhere to the collagen surface, and upregulate the serum levels of stromal cell-derived factor-1 and interleukin-8.