Effects of high power-pulsed Nd:YAG laser irradiation on the release of transforming growth factor-beta (TGF-) and vascular endothelial growth factor (VEGF) from human gingival fibroblasts


Saglam M., Koseoglu S., Pekbagriyanik T., Savran L., Enhos S.

JOURNAL OF COSMETIC AND LASER THERAPY, vol.19, no.8, pp.469-474, 2017 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 8
  • Publication Date: 2017
  • Doi Number: 10.1080/14764172.2017.1342042
  • Journal Name: JOURNAL OF COSMETIC AND LASER THERAPY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.469-474
  • Keywords: Cellular viability, cultured human gingival fibroblasts, growth factors, Nd:YAG laser, NONSURGICAL PERIODONTAL THERAPY, IN-VITRO, EFFICACY

Abstract

The purpose of this study was to investigate the effect of different high-power energy settings of a neodymium:yttrium-aluminum-garnet (Nd:YAG) laser (1064 nm) on cell viability of human gingival fibroblasts (GFs) and release of transforming growth factor-beta (TGF-) and vascular endothelial growth factor (VEGF) on these cells. GFs were isolated from human gingival connective tissues during the crown lengthening procedure. GFs were irradiated with different laser parameters as follows: group 1: 1 W (100 mJ, 10 Hz) 10 seconds; group 2: 1.5 W (150 mJ, 10 Hz) 10 seconds; group 3: 2 W (200 mJ, 10 Hz) 10 seconds; group 4: 1 W (100 mJ, 10 Hz) 20 seconds; group 5: 1.5 W (150 mJ, 10 Hz) 20 seconds; and group 6: 2 W (200 mJ, 10 Hz) 20 seconds. Cell viability/cell proliferation was analyzed with XTT (tetrazolium salt, cell proliferation kit) staining. The release levels of TGF- and VEGF were analyzed by the enzyme-linked immunosorbent assay. No significant differences were observed in the different laser irradiation groups compared to the control group in terms of cell viability (p > 0.05). The release of TGF- was not affected by different laser irradiation settings (p > 0.05). Only group 6 promoted significantly higher VEGF release from GFs in 24 hours compared to the control group (p ? 0.05). These findings suggest that high-power Nd:YAG laser is probably safe but has a very limited effect for wound healing.