ACTA2 and disease of the tendon: As shown in the results comparing the healthy and tendinopathy samples, the relative mRNA expressions of COL3A1, COX2, SCX, MMP1, and ACTA2 were increased by 1.4, 1.8, 2.7, 1.3, and 1.6 times in the SP-treated samples compared to the PBS-controls (p < 0.05 in all), respectively.