Published: Lasers in Medical Science. 2011; 26: 85–94. doi: 10.1007/s10103-010-0811-z
Keyword: LLLT, tendinitis, inflammatory mediators, RT-PCR, rat
Author(s): "Pires D, Xavier M, Araujo T, Silva JA Jr, Aimbire F, Albertini R"
A rat model of induced tendonitis was used to evaluate the effect of laser therapy on inflammatory signaling. The laser group had significantly lower mRNA for IL-6, COX-2 and TGF-β than control animals in both acute and chronic phases. Laser therapy significantly reduced mRNA TNF-α only at the chronic phase. Laser therapy is effective for the reduction of mRNA expression for pro-inflammatory mediators.