Conclusion
Combining Secretome-hypoxia MSCs with RC healing may help rats with rotator cuff tears.
Methods
A total of thirty 10-weeks-old male Sprague-Dawley rats were separated into five groups randomly, RC on week 0, lesion treated with a rotator cuff repair and saline (RC + NaCl group, n = 6) for 2 and 8 weeks, and lesion treated with a rotator cuff repair and secretome-hMSCs (RC + secretome-hMSC group, n = 6) for 2 and 8 weeks. The supraspinatus and infraspinatus muscle-tendon units were obtained for histological and biomechanical investigation at 0, 2 and 8 weeks following injury.
Results
The findings showed that, in comparison with the RC + NaCl group, secretome-hMSCs significantly improved tendon repair by upregulating TNMD and RUNX2 expression and histology score.