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Published in: Lasers in Medical Science 6/2009

01-11-2009 | Original Article

Effect of laser phototherapy on the release of fibroblast growth factors by human gingival fibroblasts

Authors: Carla Andreotti Damante, Giorgio De Micheli, Sueli Patrícia Harumi Miyagi, Ilíria Salomão Feist, Márcia Martins Marques

Published in: Lasers in Medical Science | Issue 6/2009

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Abstract

The effects of laser phototherapy on the release of growth factors by human gingival fibroblasts were studied in vitro. Cells from a primary culture were irradiated twice (6 h interval), with continuous diode laser [gallium–aluminum–arsenium (GaAlAs), 780 nm, or indium–gallium–aluminum–phosphide (InGaAlP),_660 nm] in punctual and contact mode, 40 mW, spot size 0.042 cm2, 3 J/cm2 and 5 J/cm2 (3 s and 5 s, respectively). Positive [10% fetal bovine serum (FBS)] and negative (1%FBS) controls were not irradiated. Production of keratinocyte growth factor (KGF) and basic fibroblast growth factor (bFGF) was quantified by enzyme-linked immunosorbent assay (ELISA). The data were statistically compared by analysis of variance (ANOVA) followed by Tukey’s test (P ≤ 0.05). The characterization of the cell line indicated a mesenchymal nature. KGF release was similar in all groups, while that of bFGF was significantly greater (1.49-times) in groups treated with infra-red laser. It was concluded that increased production of bFGF could be one of the mechanisms by which infra-red laser stimulates wound healing.
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Metadata
Title
Effect of laser phototherapy on the release of fibroblast growth factors by human gingival fibroblasts
Authors
Carla Andreotti Damante
Giorgio De Micheli
Sueli Patrícia Harumi Miyagi
Ilíria Salomão Feist
Márcia Martins Marques
Publication date
01-11-2009
Publisher
Springer-Verlag
Published in
Lasers in Medical Science / Issue 6/2009
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-008-0582-y

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