2007
DOI: 10.1089/pho.2007.2055
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The Effects of Laser Irradiation on Osteoblast and Osteosarcoma Cell Proliferation and Differentiation in Vitro

Abstract: Based on the conditions of this study, we conclude that each cell line responds differently to specific wavelength and dose combinations. Further investigations are required to investigate the physiological mechanisms responsible for the contrasting outcomes obtained when using laser irradiation on cultured normal and malignant bone cells.

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Cited by 171 publications
(126 citation statements)
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“…The GaAlAs laser with an 830-nm wavelength was selected on the basis of successful results obtained on fibroblasts and also on osteoblasts, both in vitro and in vivo by different authors [15][16][17][33][34][35][36][37][38][39][40][41][42][43][44][45]. The infrared lasers are known to have a greater depth of tissue penetration in comparison to red or blue light [46], thus, the osteoblasts cells could better absorb the laser energy because of the low water absorption at that wavelength [33,36,45].…”
Section: Discussionmentioning
confidence: 99%
“…The GaAlAs laser with an 830-nm wavelength was selected on the basis of successful results obtained on fibroblasts and also on osteoblasts, both in vitro and in vivo by different authors [15][16][17][33][34][35][36][37][38][39][40][41][42][43][44][45]. The infrared lasers are known to have a greater depth of tissue penetration in comparison to red or blue light [46], thus, the osteoblasts cells could better absorb the laser energy because of the low water absorption at that wavelength [33,36,45].…”
Section: Discussionmentioning
confidence: 99%
“…Esta mudança resulta num aumento da produção de oxigênio molecular e ATP, o qual estimula a atividade do DNA e RNA para síntese de proteínas reguladoras do ciclo celular e assim a velocidade de mitose pode ser aumentada [26][27][28] .…”
Section: Proliferaçãounclassified
“…Numerosos estudos experimentais in vitro já foram realizados 7,10,12,13,31,26,27,28 concordando com a hipótese de que a laserterapia seja capaz de influenciar os processos metabólicos celulares, ao aumentar a proliferação de várias células, como os fibroblastos, osteoblastos, queratinócitos, células tronco e células oriundas de tumores malignos.…”
Section: Discussão Discussão Discussão Discussão Discussãounclassified
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“…72 De maneira interessante, o uso da LLLT em células neoplásicas leva a efeitos que estimulam ou inibem a viabilidade destas células (210) . Além disso, é apontado o fato de que células irradiadas em cultura não refletem a realidade biológica tão complexa que um câncer mantém com seu hospedeiro (211,212,232) . Isto acontece porque existem outros fatores que podem influenciar o crescimento de um tumor e que podem ser modulados pela LLLT (202) .…”
Section: Discussionunclassified