scholarly journals Electrophysiological Effects of Single Point Transcutaneous 650 and 808 nm Laser Irradiation of Rat Sciatic Nerve: A Study of Relevance for Low-Level Laser Therapy and Laser Acupuncture

2012 ◽  
Vol 30 (9) ◽  
pp. 530-535 ◽  
Author(s):  
Roberta Chow ◽  
Weixing Yan ◽  
Patricia Armati
Keyword(s):  
Sciatic Nerve ◽  
Laser Irradiation ◽  
Laser Therapy ◽  
Single Point ◽  
Low Level Laser Therapy ◽  
Laser Acupuncture ◽  
Rat Sciatic Nerve ◽  
Low Level Laser ◽  
Level Laser ◽  
Electrophysiological Effects

scholarly journals Effects of 660 nm Low Level Laser Therapy on Neuropathic Pain Relief Following Chronic Constriction Injury in Rat Sciatic Nerve

2013 ◽  
Vol 1 (2) ◽  
pp. 76-81 ◽  
Author(s):  
Masoume Masoumipoor ◽  
Seyed Behnam Jameie ◽  
Atusa Janzadeh ◽  
Farinaz Nasirinezhad ◽  
Mahdie Kerdari ◽  
...  
Keyword(s):  
Neuropathic Pain ◽  
Pain Relief ◽  
Sciatic Nerve ◽  
Laser Therapy ◽  
Chronic Constriction Injury ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Rat Sciatic Nerve ◽  
Low Level Laser ◽  
Level Laser

Effect of Low-Level Laser Therapy (LLLT) on Acute Neural Recovery and Inflammation-Related Gene Expression After Crush Injury in Rat Sciatic Nerve

2013 ◽  
Vol 45 (4) ◽  
pp. 246-252 ◽  
Author(s):  
Carolina C. Alcântara ◽  
Davilene Gigo-Benato ◽  
Tania F. Salvini ◽  
Alexandre L. R. Oliveira ◽  
Juanita J. Anders ◽  
...  
Keyword(s):  
Gene Expression ◽  
Sciatic Nerve ◽  
Laser Therapy ◽  
Crush Injury ◽  
Low Level Laser Therapy ◽  
Related Gene ◽  
Low Level ◽  
Rat Sciatic Nerve ◽  
Low Level Laser ◽  
Level Laser

Effects of 660 and 780 nm low-level laser therapy on neuromuscular recovery after crush injury in rat sciatic nerve

2010 ◽  
Vol 42 (9) ◽  
pp. 833-842 ◽  
Author(s):  
Davilene Gigo-Benato ◽  
Thiago Luiz Russo ◽  
Erika Harumi Tanaka ◽  
Lívia Assis ◽  
Tania Fátima Salvini ◽  
...  
Keyword(s):  
Sciatic Nerve ◽  
Laser Therapy ◽  
Crush Injury ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Rat Sciatic Nerve ◽  
Low Level Laser ◽  
Level Laser

scholarly journals Effects of Low Level Laser Therapy on Ovalbumin-Induced Mouse Model of Allergic Rhinitis

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Binhye Choi ◽  
Mun Seog Chang ◽  
Ha Young Kim ◽  
Jae-Woo Park ◽  
Bongha Ryu ◽  
...  
Keyword(s):  
Allergic Rhinitis ◽  
Laser Irradiation ◽  
Laser Therapy ◽  
Low Dose ◽  
Low Level Laser Therapy ◽  
High Dose ◽  
Low Level ◽  
Low Level Laser ◽  
Dose Irradiation ◽  
Level Laser

Introduction. This study was designed to investigate the effects of low level laser therapy (LLLT) on experimental allergic rhinitis (AR) models induced by ovalbumin.Materials and Methods. AR was induced by 1% ovalbumin in mice. Twenty-four mice were divided into 4 groups: normal, control, low, and high dose irradiation. Low and high dose LLLT were irradiated once a day for 7 days. Total IgE, cytokines concentrations (IL-4 and IFN-γ), and thymus and activation regulated chemokine (TARC) were measured. Histological changes in the nasal mucosal tissue by laser irradiation were examined.Results. LLLT significantly inhibited total IgE, IL-4, and TARC expression in ovalbumin-induced mice at low dose irradiation. The protein expression level of IL-4 in spleen was inhibited in low dose irradiation significantly. IL-4 expression in EL-4 cells was inhibited in a dose dependent manner. Histological damages of the epithelium in the nasal septum were improved by laser irradiation with marked improvement at low dose irradiation.Conclusion. These results suggest that LLLT might serve as a new therapeutic tool in the treatment of AR with more effectiveness at low dose irradiation. To determine the optimal dose of laser irradiation and action mechanisms of laser therapy, further studies will be needed.

scholarly journals Assessment of Functional Recovery of Sciatic Nerve in Rats Submitted to Low-Level Laser Therapy with Different Fluences. An Experimental Study

2016 ◽  
Vol 5 (02) ◽  
pp. 49-53 ◽  
Author(s):  
Alexandre Marcolino ◽  
Rafael Barbosa ◽  
Lais das Neves ◽  
Nilton Mazzer ◽  
Rinaldo de Jesus Guirro ◽  
...  
Keyword(s):  
Experimental Study ◽  
Sciatic Nerve ◽  
Laser Therapy ◽  
Functional Recovery ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser

scholarly journals Application of a Low-Level Laser Therapy and the Purified Protein from Natural Latex (Hevea brasiliensis) in the Controlled Crush Injury of the Sciatic Nerve of Rats: A Morphological, Quantitative, and Ultrastructural Study

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Fernando José Dias ◽  
João Paulo Mardegan Issa ◽  
Mamie Mizusaki Iyomasa ◽  
Joaquim Coutinho-Netto ◽  
Ricardo Alexandre Junqueria Calzzani ◽  
...  
Keyword(s):  
Sciatic Nerve ◽  
Laser Therapy ◽  
Ultrastructural Analysis ◽  
Crush Injury ◽  
Low Level Laser Therapy ◽  
Control Group ◽  
Low Level ◽  
Injured Nerve ◽  
Low Level Laser ◽  
Level Laser

This study analyzed the effects of a low-level laser therapy (LLLT, 15 J/cm2, 780 nm wavelength) and the natural latex protein (P1, 0.1%) in sciatic nerve after crush injury (15 Kgf, axonotmesis) in rats. Sixty rats (male, 250 g) were allocated into the 6 groups (n=10): CG—control group; EG—nerve exposed; IG—injured nerve without treatment; LG—crushed nerve treated with LLLT; PG—injured nerve treated with P1; and LPG—injured nerve treated with LLLT and P1. After 4 or 8 weeks, the nerve samples were processed for morphological, histological quantification and ultrastructural analysis. After 4 weeks, the myelin density and morphological characteristics improved in groups LG, PG, and LPG compared to IG. After 8 weeks, PG, and LPG were similar to CG and the capillary density was higher in the LG, PG, and LPG. In the ultrastructural analysis the PG and LPG had characteristics that were similar to the CG. The application of LLLT and/or P1 improved the recovery from the nerve crush injury, and in the long term, the P1 protein was the better treatment used, since only the application of LLLT has not reached the same results, and these treatments applied together did not potentiate the recovery.

Abstract 423: Low Level Laser Therapy Stimulates Hypoxia-Inducible Factor Expression and Increases MicroRNA 210 Content after Rat Myocardial Infarction

Hypertension ◽  
2014 ◽  
Vol 64 (suppl_1) ◽  
Author(s):  
Jose A Silva ◽  
Regiane S Feliciano ◽  
Andrey J Serra ◽  
Martha T Manchini ◽  
Eduardo T Santana ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Laser Irradiation ◽  
Laser Therapy ◽  
Systolic Dysfunction ◽  
Hypoxia Inducible Factor ◽  
Micro Rna ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser

Low-level laser therapy (LLLT) has been used as an anti-inflammatory alternative treatment in several disease conditions, even when inflammation is a secondary consequence, such as in myocardial infarction (MI). LLLT treatment effectively reduces MI size and attenuates the systolic dysfunction after MI. However, the mechanism by which LLLT is able to protect the remaining myocardium remains unclear. Here, we tested the hypothesis that LLLT might reduce the hypoxia effects generated by MI. To achieve this purpose, we evaluated, after laser irradiation, the modulation of hypoxia-inducible factor (HIF) and microRNA 210 expressions, which are consistently stimulated under hypoxic conditions. We observed that HIF content presented an up-regulation after MI, however, a significant augmented HIF expression was observed after LLLT. Accordingly, micro-RNA 210 expression in the MI remote area increased even further after laser irradiation. Our data suggest that LLLT stimulates HIF expression pathway, increasing hypoxia-induced microRNA 210 content after MI, therefore, highlighting a possible cardioprotective role of LLLT.

scholarly journals Cicatrização de ferida cirúrgica tratada com laser de baixa intensidade: relato de caso

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Matheus Francisco Barros Rodrigues ◽  
Layla Louise de Amorim Rocha ◽  
Iana Maria Gomes Barbosa ◽  
Rodrigo da Franca Acioly ◽  
Daniel do Carmo Carvalho ◽  
...  
Keyword(s):  
Wound Healing ◽  
Low Power ◽  
Laser Irradiation ◽  
Laser Therapy ◽  
Light Therapy ◽  
Low Level Laser Therapy ◽  
Low Level Laser ◽  
Osteoblast Activity ◽  
Level Laser ◽  
Morphogenetic Factors

Os lasers de baixa potência são utilizados para fins terapêuticos e bioestimuladores, agindo principalmente como aceleradores em processos cicatriciais, além de possuírem efeitos redutores de dor e anti-inflamatórios. A cicatrização envolve fenômenos biológicos como alterações vasculares e celulares, proliferação epitelial, proliferação de fibroblastos, revascularização e contração da ferida. Em tecidos epiteliais, o laser causa a proliferação, migração de células e ativa os fatores de crescimento. Já em tecido conjuntivo, atua aumentando a síntese de colágeno por fibroblastos, além de aumentar a vascularização ao promover angiogênese. Este artigo tem por objetivo relatar um caso de exposição óssea pós-cirúrgica tratada com terapia a laser de baixa intensidade, demonstrando aspectos clínicos e teóricos, além de analisar os efeitos da laserterapia e sua importância no processo de cicatrização. Em casos de exposição óssea uma alternativa viável é a enxertia de tecido gengival. No entanto, a necessidade de dois procedimentos cirúrgicos na área doadora e da receptora pode apresentar-se como desvantagem na aplicabilidade da técnica. Considera-se que a laserterapia possibilita a regeneração com ausência de procedimentos cirúrgicos, além de promover o aumento do fluxo sanguíneo e controle de processos inflamatórios. Pode-se concluir que a laserterapia de baixa intensidade representa um auxílio no processo de cicatrização e possibilitou a resolução do caso clínico de maneira eficaz.Descritores: Lasers; Odontologia; Cicatrização.ReferênciasCavalcanti TM, Almeida-Barros RQ, Catão MHCV, Feitosa APA, Lins RDAU. Conhecimento das propriedades físicas e da interação do laser com os tecidos biológicos na odontologia. An Bras Dermatol. 2011;86(5):955-60.Saracino S, Mozzati M, Martinasso G, Poi R, Canuto RA, Muzio G. Superpulsed laser irradiation increases osteoblast activity via modulation of bone morphogenetic factors. Lasers Surg Med. 2009;41(4):298-304.Aykol G, Baser U, Maden I, Kazak Z, Onan U et al. The effect of low-level laser therapy as an adjunct to non-surgical periodontal treatment. J Periodontol. 2011;82(3):481-88.Bourguignon-Filho AM, Feitosa ACR, Beltrão GC, Pagnoncelli RM. Utilização do laser de baixa intensidade no processo de cicatrização tecidual. Revisão da literatura. Rev Port Estomatol Med Dent Cir Maxilofac. 2005;46(1):37-43.Chaves MEA, Araújo AR, Piancastelli ACC, Pinotti M. Effects of low-power light therapy on wound healing: LASER x LED. An Bras Dermatol. 2014;89(4):616-23.Assis, VKS, Cardoso FL, Silva BP. Aplicabilidade da laserterapia no cenário odontológico: uma terapêutica em ascensão–revisão de literatura. Anais do Seminário Científico do UNIFACIG 5;2019.Silva Garcez A, Simões Ribeiro M, Núñez SC. Laser de baixa potência: princípios básicos e aplicações clínicas na Odontologia. Rio de Janeiro: Elsevier; 2012.Miloro M. Princípios de cirurgia bucomaxilofacial de Peterson. 2. ed. São Paulo: Santos; 2008.Laureano A, Rodrigues AM. Cicatrização de feridas. Rev. da Soc. Port. Dermatologia e Venereol. 2011;69(3):355-67.Carvalho LMM, Guimarães AAS, Lopes DS. Abordagens cirúrgicas para o tratamento das recessões marginais gengivais. Anais XV Congresso Brasileiro de Estomatologia. São Pedro- SP. 2007.Shibayama R, Fugii WM. Enxerto gengival livre. UNOPAR Cient Ciênc BiolSaúde. 2000;2(1):107-11.Andrade FSS, Clark RMO, Ferreira ML. Efeitos da laserterapia de baixa potência na cicatrização de feridas cutâneas. Rev Col Bras Cir. 2014;41(2):129-33.Rocha JCT. Terapia laser, cicatrização tecidual e angiogênese. Rev Bras Promoção Saúde. 2004;17(1):44-8.

Biochemical changes in injured sciatic nerve of rats after low-level laser therapy (660 nm and 808 nm) evaluated by Raman spectroscopy

2018 ◽  
Vol 34 (3) ◽  
pp. 525-535
Author(s):  
Melissa de Almeida Melo Maciel Mangueira ◽  
Nilton Maciel Mangueira ◽  
Ozimo Pereira Gama Filho ◽  
Márcio Moysés de Oliveira ◽  
Renato Albuquerque Heluy ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Sciatic Nerve ◽  
Laser Therapy ◽  
Biochemical Changes ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser
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