1064nm Nd:YAG laser promotes chondrocytes regeneration and cartilage
reshaping by upregulating local estrogen levels
Abstract
Cartilage is frequently used as scaffolds for repairing and
reconstructing body surface organs. However, after successful plastic
surgery, transplanted cartilage scaffolds often exhibit deformation and
absorption over time. To enhance the shapping stability of cartilage
scaffolds and improve patients’ satisfaction after reconstructions, we
employed the ear folding models in New Zealand rabbit to confirm whether
the 1064nm Nd:YAG laser could promote cartilage reshapping. There was an
increase in collagen and aromatase (Cyp19) expression within the ear
cartilage after laser treatment. Moreover, we have discovered that the
Cyp19 inhibitor can suppress the shaping effect of the laser on
cartilage, as well as the expression of collagen and Cyp19. The overall
findings suggest that treatment with 1064nm Nd:YAG laser irradiation can
enhance estrogen levels in local cartilage tissues by upregulating Cyp19
expression in chondrocytes through photobiomodulation, thereby promoting
the proliferation and collagen secretion of chondrocytes to improve
cartilage reshaping and stability.