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Paracrine effects of mesenchymal stem cells (MSCs) have been suggested play an important role in thetreatment of ischemic diseases. Dental pulp Stem cells (DPSCs) share many properties with MSCs. However, thebeneficial effects of DPSCs on ischemic diseases remain to be elucidated. The present study, we found that DPSCssecreted higher levels angiogenic factors of VEGF, SDF-1, MCP-1 and PDGF-BB compared with AD-MSCs. Wethen investigated whether DP-CM can induce the migration of vascular smooth muscle cells (VSMCs) and humanumbilical venous endothelial cells (HUVECs) in vitro. Under hypoxia, the apoptosis of HUVECs was inhibitedwhile survival was improved by treatment of DP-CM. In a H2O2-induced cell death assay, DP-CM also significantlyreduced HUVECs oxidative stress compare to control group. The tube formation assay demonstrated that the DPCMgroup had a greater angiogenic potential than control medium. Results in the mouse model showed both thelaser Doppler perfusion index and the relative number of CD31 positive microvessels to be significantly higher inthe DP-CM group than in the control group [(77%±11%) vs. (45%±6%), and (6.2±1.1)/HPF vs. (2.3±0.3)/HPF]. Inthis way, the use of DP-CM may be a suitable means of treating ischemic diseases.

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