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Sammons T, Shanks S. Efficacy of red low-level laser for postoperative pain management: A review of literature. J Perioper Pract 2023; 33:350-357. [PMID: 36394302 DOI: 10.1177/17504589221124757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Many patients who undergo surgical procedures experience acute postoperative pain, with less than half receiving adequate pain relief. Recent advancements in postoperative pain management include the market clearance by the US Food and Drug Administration for the utilisation of red low-level laser therapy in providing postoperative pain relief. The Food and Drug Administration market clearance was based on clinical data from randomised controlled trials that supported the safety and effectiveness of visible red laser therapy across various surgical procedures. This review of literature aims to evaluate the mechanisms of action, the dose-response curves and clinical outcomes of red low-level laser for postoperative pain management. A literature search was limited to randomised controlled trials that evaluated the use of red low-level laser therapy on postoperative pain. The results from the literature search found that seven studies met the search qualifications. The literature review findings demonstrated that red low-level laser therapy is a safe and effective treatment alternative for postoperative pain management. In addition to postoperative pain reduction, the findings of the literature revealed that red low-level laser therapy may promote healing and reduce the consumption of postoperative prescription analgesic drugs.
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Wada Y, Suzuki A, Ishiguro H, Murakashi E, Numabe Y. Chronological Gene Expression of Human Gingival Fibroblasts with Low Reactive Level Laser (LLL) Irradiation. J Clin Med 2021; 10:jcm10091952. [PMID: 34062904 PMCID: PMC8125544 DOI: 10.3390/jcm10091952] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 01/06/2023] Open
Abstract
Though previously studies have reported that Low reactive Level Laser Therapy (LLLT) promotes wound healing, molecular level evidence was uncleared. The purpose of this study is to examine the temporal molecular processes of human immortalized gingival fibroblasts (HGF) by LLLT by the comprehensive analysis of gene expression. HGF was seeded, cultured for 24 h, and then irradiated with a Nd: YAG laser at 0.5 W for 30 s. After that, gene differential expression analysis and functional analysis were performed with DNA microarray at 1, 3, 6 and 12 h after the irradiation. The number of genes with up- and downregulated differentially expression genes (DEGs) compared to the nonirradiated group was large at 6 and 12 h after the irradiation. From the functional analysis results of DEGs, Biological Process (BP) based Gene Ontology (GO), BP ‘the defense response’ is considered to be an important process with DAVID. Additionally, the results of PPI analysis of DEGs involved in the defense response with STRING, we found that the upregulated DEGs such as CXCL8 and NFKB1, and the downregulated DEGs such as NFKBIA and STAT1 were correlated with multiple genes. We estimate that these genes are key genes on the defense response after LLLT.
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Affiliation(s)
- Yuki Wada
- Department of Periodontology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan; (Y.W.); (H.I.); (E.M.); (Y.N.)
| | - Asami Suzuki
- Division of General Dentistry, The Nippon Dental University Hospital, 2-3-16 Fujimi, Chiyoda-ku, Tokyo 102-8158, Japan
- Correspondence: ; Tel.: +81-3-3261-5511
| | - Hitomi Ishiguro
- Department of Periodontology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan; (Y.W.); (H.I.); (E.M.); (Y.N.)
- Dental Education Support Center, School of Life Dentistry, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan
| | - Etsuko Murakashi
- Department of Periodontology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan; (Y.W.); (H.I.); (E.M.); (Y.N.)
| | - Yukihiro Numabe
- Department of Periodontology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan; (Y.W.); (H.I.); (E.M.); (Y.N.)
- Dental Education Support Center, School of Life Dentistry, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8159, Japan
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Santamaria MP, Fernandes-Dias SB, Araújo CF, Lucas da Silva Neves F, Mathias IF, Rebelato Bechara Andere NM, Neves Jardini MA. 2-Year Assessment of Tissue Biostimulation With Low-Level Laser on the Outcomes of Connective Tissue Graft in the Treatment of Single Gingival Recession: A Randomized Clinical Trial. J Periodontol 2017; 88:320-328. [DOI: 10.1902/jop.2016.160391] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mauro Pedrine Santamaria
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University - UNESP, São José dos Campos, Brazil
| | - Stephanie Botti Fernandes-Dias
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University - UNESP, São José dos Campos, Brazil
| | - Cassia Fernandes Araújo
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University - UNESP, São José dos Campos, Brazil
| | - Felipe Lucas da Silva Neves
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University - UNESP, São José dos Campos, Brazil
| | | | | | - Maria Aparecida Neves Jardini
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University - UNESP, São José dos Campos, Brazil
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Khan MS, Bhaisare ML, Gopal J, Wu HF. Highly efficient gold nanorods assisted laser phototherapy for rapid treatment on mice wound infected by pathogenic bacteria. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2015.12.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Blatt A, Elbaz-Greener GA, Tuby H, Maltz L, Siman-Tov Y, Ben-Aharon G, Copel L, Eisenberg I, Efrati S, Jonas M, Vered Z, Tal S, Goitein O, Oron U. Low-Level Laser Therapy to the Bone Marrow Reduces Scarring and Improves Heart Function Post-Acute Myocardial Infarction in the Pig. Photomed Laser Surg 2016; 34:516-524. [PMID: 26741110 DOI: 10.1089/pho.2015.3988] [Citation(s) in RCA: 267] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Cell therapy for myocardial repair is one of the most intensely investigated strategies for treating acute myocardial infarction (MI). The aim of the present study was to determine whether low-level laser therapy (LLLT) application to stem cells in the bone marrow (BM) could affect the infarcted porcine heart and reduce scarring following MI. METHODS MI was induced in farm pigs by percutaneous balloon inflation in the left coronary artery for 90 min. Laser was applied to the tibia and iliac bones 30 min, and 2 and 7 days post-induction of MI. Pigs were euthanized 90 days post-MI. The extent of scarring was analyzed by histology and MRI, and heart function was analyzed by echocardiography. RESULTS The number of c-kit+ cells (stem cells) in the circulating blood of the laser-treated (LT) pigs was 2.62- and 2.4-fold higher than in the non-laser-treated (NLT) pigs 24 and 48 h post-MI, respectively. The infarct size [% of scar tissue out of the left ventricle (LV) volume as measured from histology] in the LT pigs was 3.2 ± 0.82%, significantly lower, 68% (p < 0.05), than that (16.6 ± 3.7%) in the NLT pigs. The mean density of small blood vessels in the infarcted area was significantly higher [6.5-fold (p < 0.025)], in the LT pigs than in the NLT ones. Echocardiography (ECHO) analysis for heart function revealed the left ventricular ejection fraction in the LT pigs to be significantly higher than in the NLT ones. CONCLUSIONS LLLT application to BM in the porcine model for MI caused a significant reduction in scarring, enhanced angiogenesis and functional improvement both in the acute and long term phase post-MI.
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Affiliation(s)
- Alex Blatt
- 1 Cardiology Division, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Gabby A Elbaz-Greener
- 1 Cardiology Division, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Hana Tuby
- 3 Deprtment of Zoology, Faculty of Life Sciences, Tel-Aviv University , Tel Aviv, Israel
| | - Lidya Maltz
- 3 Deprtment of Zoology, Faculty of Life Sciences, Tel-Aviv University , Tel Aviv, Israel
| | - Yariv Siman-Tov
- 4 Preclinical Unit, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Gad Ben-Aharon
- 4 Preclinical Unit, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Laurian Copel
- 5 Department of Radiology, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Itzhak Eisenberg
- 6 School of Veterinary Medicine, Hebrew University , Jerusalem, Israel
| | - Shai Efrati
- 4 Preclinical Unit, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Michael Jonas
- 7 Heart Institute, Kaplan Medical Center , Rehovot, Israel
| | - Zvi Vered
- 1 Cardiology Division, Assaf Harofeh Medical Center , Zerifin, Israel .,2 Sackler School of Medicine, Tel Aviv University , Tel Aviv, Israel
| | - Sigal Tal
- 5 Department of Radiology, Assaf Harofeh Medical Center , Zerifin, Israel
| | - Orly Goitein
- 8 Cardiac MRI Unit, Shiba Medical Center , Ramat-Gan, Israel
| | - Uri Oron
- 3 Deprtment of Zoology, Faculty of Life Sciences, Tel-Aviv University , Tel Aviv, Israel
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Low Reactive Level Laser Therapy for Mesenchymal Stromal Cells Therapies. Stem Cells Int 2015; 2015:974864. [PMID: 26273309 PMCID: PMC4529981 DOI: 10.1155/2015/974864] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 03/14/2015] [Indexed: 12/24/2022] Open
Abstract
Low reactive level laser therapy (LLLT) is mainly focused on the activation of intracellular or extracellular chromophore and the initiation of cellular signaling by using low power lasers. Over the past forty years, it was realized that the laser therapy had the potential to improve wound healing and reduce pain and inflammation. In recent years, the term LLLT has become widely recognized in the field of regenerative medicine. In this review, we will describe the mechanisms of action of LLLT at a cellular level and introduce the application to mesenchymal stem cells and mesenchymal stromal cells (MSCs) therapies. Finally, our recent research results that LLLT enhanced the MSCs differentiation to osteoblast will also be described.
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Góralczyk K, Szymańska J, Łukowicz M, Drela E, Kotzbach R, Dubiel M, Michalska M, Góralczyk B, Zając A, Rość D. Effect of LLLT on endothelial cells culture. Lasers Med Sci 2014; 30:273-8. [PMID: 25231826 PMCID: PMC4289014 DOI: 10.1007/s10103-014-1650-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 08/29/2014] [Indexed: 02/02/2023]
Abstract
Growth factors as vascular endothelial growth factor (VEGF), produced by the endothelial cells, take an essential part in pathological and physiological angiogenesis. The possibility of angiogenesis modulation by application of laser radiation may contribute to the improvement of its use in this process. Thus, the aim of the study was to investigate the influence of low-level laser therapy (LLLT) on the proliferation of endothelial cells, secretion of VEGF-A and presence of soluble VEGF receptors (sVEGFR-1 and sVEGFR-2) in the medium after in vitro culture. Isolated human umbilical vein endothelial cells (HUVECs) were irradiated using a diode laser at a wavelength of 635 nm and power density of 1,875 mW/cm2. Depending on radiation energy density, the experiment was conducted in four groups: I 0 J/cm2 (control group), II 2 J/cm2, III 4 J/cm2, and IV 8 J/cm2. The use of laser radiation wavelength of 635 nm, was associated with a statistically significant increase in proliferation of endothelial cells (p = 0.0041). Moreover, at 635-nm wavelength, all doses of radiation significantly reduced the concentration of sVEGFR-1 (p = 0.0197).
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Affiliation(s)
- Krzysztof Góralczyk
- Department of Pathophysiology, Collegium Medicum in Bydgoszcz, The Nicolaus Copernicus University in Toruń (NCU), Ul. M. Skłodowskiej-Curie 9, 85-094, Bydgoszcz, Poland,
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Zand N, Fateh M, Ataie-Fashtami L, Djavid GE, Fatemi SM, Shirkavand A. Promoting Wound Healing in Minor Recurrent Aphthous Stomatitis By Non-Thermal, Non-Ablative CO2Laser Therapy: A Pilot Study. Photomed Laser Surg 2012; 30:719-23. [DOI: 10.1089/pho.2012.3301] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Nasrin Zand
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
| | - Mohsen Fateh
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
| | - Leila Ataie-Fashtami
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
| | - Gholamreza Esmaeeli Djavid
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
| | - Seyyed-Mostafa Fatemi
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
| | - Afshan Shirkavand
- Medical Laser Research Center, Iranian Center for Medical Laser (ICML), Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
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Martins MAT, Martins MD, Lascala CA, Curi MM, Migliorati CA, Tenis CA, Marques MM. Association of laser phototherapy with PRP improves healing of bisphosphonate-related osteonecrosis of the jaws in cancer patients: A preliminary study. Oral Oncol 2012; 48:79-84. [DOI: 10.1016/j.oraloncology.2011.08.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 08/16/2011] [Accepted: 08/16/2011] [Indexed: 01/09/2023]
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de Sousa APC, de Aguiar Valença Neto ADAP, Marchionni AMT, de Araújo Ramos M, dos Reis Júnior JA, Pereira MCMC, Cangussú MCT, de Almeida Reis SR, Pinheiro ALB. Effect of LED phototherapy (λ700 ± 20 nm) on TGF-β expression during wound healing: an immunohistochemical study in a rodent model. Photomed Laser Surg 2011; 29:605-11. [PMID: 21595552 DOI: 10.1089/pho.2010.2833] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of the present investigation was to evaluate transforming growth factor β (TGF-β) expression on cutaneous wounds in rodents treated or not treated with LED light. BACKGROUND TGF-β is a multifunctional cytokine that presents a central action during tissue repair. Although several studies both in vitro and in vivo have shown that LED phototherapy influences tissue repair, a full understanding of the mechanisms involved in its usage, such as in the modulation of some growth factors, remains unclear. MATERIALS AND METHODS Under general anesthesia, 24 young adult male Wistar rats weighing 200-250 g had one excisional wound created on the dorsum of each, and were randomly distributed into two groups: G0 (Control) and G1 (LED, λ700 ± 20 nm, 16 mW, SAEF = 5 J/cm(2), Illuminated Area = 2 cm(2), 8 mWcm(2), 626 s) Each group was subdivided into three subgroups according to the animal death timing (2, 4, and 6 days). LED phototherapy started immediately after surgery and was repeated every other day during the experimental time. Following animal death, specimens were removed, routinely processed to wax, cut and immunomarked with polyclonal anti-TGF-β, and underwent histological analysis by light microscopy. The mean area of expression of each group was calculated. The data were statistically analyzed using ANOVA and Tukey's test. RESULTS The area of the expression of TGF-β on LED-irradiated animals was significantly smaller than on controls at day 2 (p = 0.013). No significant difference was found at later times. It is concluded that the use of LED light, at these specific parameters, caused an inhibition of the expression of TGF-β at an early stage of the healing process.
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Gavish L, Rubinstein C, Bulut A, Berlatzky Y, Beeri R, Gilon D, Gavish L, Harlev M, Reissman P, Gertz SD. Low-level laser irradiation inhibits abdominal aortic aneurysm progression in apolipoprotein E-deficient mice. Cardiovasc Res 2009; 83:785-92. [PMID: 19443426 DOI: 10.1093/cvr/cvp149] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS Increased early detection of abdominal aortic aneurysm (AAA) and the severe complications of its current treatment have emphasized the need for alternative therapeutic strategies that target pathogenetic mechanisms of progression and rupture. Recent in vitro studies from our laboratory have shown that low-level laser irradiation (LLLI) (780 nm) modifies cellular processes fundamental to aneurysm progression. The present study was designed to determine whether LLLI retards the progression of suprarenal AAA in vivo. METHODS AND RESULTS High-frequency ultrasonography (0.01 mm resolution) was used to quantify the effect of LLLI on aneurysmatic aortic dilatation from baseline to 4 weeks after subcutaneous infusion of angiotensin II by osmotic minipumps in the apolipoprotein E-deficient mouse. At 4 weeks, seven of 15 non-irradiated, but none of the 13 LLLI, mice had aneurysmal dilatation in the suprarenal aneurysm-prone segments that had progressed to >or=50% increase in maximal cross-sectional diameter (CSD) over baseline (P = 0.005 by Fisher's exact test). The mean CSD of the suprarenal segments (normalized individually to inter-renal control segments) was also significantly lower in irradiated animals (LLLI vs. non-irradiated: 1.32 +/- 0.14 vs. 1.82 +/- 0.39, P = 0.0002 by unpaired, two-tailed t-test) with a 94% reduction in CSD at 4 weeks compared with baseline. M-mode ultrasound data showed that reduced radial wall velocity seen in non-treated was significantly attenuated in the LLLI mice, suggesting a substantial effect on arterial wall elasticity. CONCLUSION These in vivo studies, together with previous in vitro studies from this laboratory, appear to provide strong evidence in support of a role for LLLI in the attenuation of aneurysm progression. Further studies in large animals would appear to be the next step towards testing the applicability of this technology to the human interventional setting.
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Affiliation(s)
- Lilach Gavish
- Department of Anatomy, The Hebrew University-Hadassah Medical School, PO Box 12272, Jerusalem 91120, Israel
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Gao X, Xing D. Molecular mechanisms of cell proliferation induced by low power laser irradiation. J Biomed Sci 2009; 16:4. [PMID: 19272168 PMCID: PMC2644974 DOI: 10.1186/1423-0127-16-4] [Citation(s) in RCA: 301] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Accepted: 01/12/2009] [Indexed: 02/07/2023] Open
Abstract
Low power laser irradiation (LPLI) promotes proliferation of multiple cells, which (especially red and near infrared light) is mainly through the activation of mitochondrial respiratory chain and the initiation of cellular signaling. Recently, the signaling proteins involved in LPLI-induced proliferation merit special attention, some of which are regulated by mitochondrial signaling. Hepatocyte growth factor receptor (c-Met), a member of tyrosine protein kinase receptors (TPKR), is phosphorylated during LPLI-induced proliferation, but tumor necrosis factor alpha (TNF-alpha) receptor has not been affected. Activated TPKR could activate its downstream signaling elements, like Ras/Raf/MEK/ERK, PI3K/Akt/eIF4E, PI3K/Akt/eNOS and PLC-gamma/PKC pathways. Other two pathways, DeltaPsim/ATP/cAMP/JNK/AP-1 and ROS/Src, are also involved in LPLI-induced proliferation. LPLI-induced cell cycle progression can be regulated by the activation or elevated expressions of cell cycle-specific proteins. Furthermore, LPLI induces the synthesis or release of many molecules, like growth factors, interleukins, inflammatory cytokines and others, which are related to promotive effects of LPLI.
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Affiliation(s)
- Xuejuan Gao
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, PR China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, South China Normal University, Guangzhou 510631, PR China
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Hu WP, Wang JJ, Yu CL, Lan CCE, Chen GS, Yu HS. Helium-neon laser irradiation stimulates cell proliferation through photostimulatory effects in mitochondria. J Invest Dermatol 2007; 127:2048-57. [PMID: 17446900 DOI: 10.1038/sj.jid.5700826] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Previous reports have shown that cellular functions could be influenced by visual light (400-700 nm). Recent evidence indicates that cellular proliferation could be triggered by the interaction of a helium-neon laser (He-Ne laser, 632.8 nm) with the mitochondrial photoacceptor-cytochrome c oxidase. Our previous studies demonstrated that He-Ne irradiation induced an increase in cell proliferation, but not migration, in the melanoma cell line A2058 cell. The aim of this study was to investigate the underlying mechanisms involved in photostimulatory effects induced by an He-Ne laser. Using the A2058 cell as a model for cell proliferation, the photobiologic effects induced by an He-Ne laser were studied. He-Ne irradiation immediately induced an increase in mitochondrial membrane potential (delta psi(mt)), ATP, and cAMP via enhanced cytochrome c oxidase activity and promoted phosphorylation of Jun N-terminal kinase (JNK)/activator protein-1 (AP-1) expressions. He-Ne irradiation-induced A2058 cell proliferation was significantly abrogated by the addition of delta psi(mt) and JNK inhibitors. Moreover, treatment with an He-Ne laser resulted in delayed effects on IL-8 and transforming growth factor-beta1 release from A2058 cells. These results suggest that He-Ne irradiation elicits photostimulatory effects in mitochondria processes, which involve JNK/AP-1 activation and enhanced growth factor release, and ultimately lead to A2058 cell proliferation.
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Affiliation(s)
- Wan-Ping Hu
- Faculty of Biotechnology and Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Gao X, Chen T, Xing D, Wang F, Pei Y, Wei X. Single cell analysis of PKC activation during proliferation and apoptosis induced by laser irradiation. J Cell Physiol 2006; 206:441-8. [PMID: 16155941 DOI: 10.1002/jcp.20484] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Laser irradiation has been shown to trigger cellular proliferation and apoptosis in various cell types. Studying the signaling pathways involved in the laser irradiation is important for understanding these processes. In present study, to monitor the protein kinase Cs (PKCs) activity in living cells in real time, we transfected and screened human lung adenocarcinoma cells (ASTC-a-1) stably expressing C kinase activity reporter (CKAR) constructed based on fluorescence resonance energy transfer (FRET) technique. The CKAR is a specific, reversible reporter of phosphorylation by PKCs and it can monitor the ongoing balance between PKCs and phosphatases. The increasing dynamics of PKCs activity is monitored during cell proliferation induced by low-power laser irradiation (LPLI) (0.8 J/cm2) in serum-starved ASTC-a-1 cells stably expressing CKAR reporter using FRET imaging on laser scanning confocal microscope and using spectrofluorometric analysis on a luminescence spectrometer, respectively. However, the decreasing dynamics of PKCs activity has been monitored in real time using FRET imaging for the cells treated with high fluence LPLI (60 J/cm2), which was previously found to induce cell apoptosis. Taken together, LPLI induces the ASTC-a-1 cell proliferation by specifically activating PKCs. However, PKCs activity decreases during cell apoptosis induced by high fluence LPLI. Our results indicate that PKCs play an important role in the laser irradiation-induced biological effects.
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Affiliation(s)
- Xuejuan Gao
- Institute of Laser Life Science, South China Normal University, Guangzhou, China, and Wellman Laboratories of Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA
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Byrnes KR, Wu X, Waynant RW, Ilev IK, Anders JJ. Low power laser irradiation alters gene expression of olfactory ensheathing cells in vitro. Lasers Surg Med 2005; 37:161-71. [PMID: 16037971 DOI: 10.1002/lsm.20202] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND AND OBJECTIVES Both photobiomodulation (PBM) and olfactory ensheathing cells (OECs) transplantation improve recovery following spinal cord injury. However, neither the combination of these two therapies nor the effect of light on OECs has been reported. The purpose of this study was to determine the effect of light on OEC activity in vitro. MATERIALS AND METHODS OECs were purified from adult rat olfactory bulbs and exposed to 810 nm light (150 mW; 0, 0.2, or 68 J/cm(2)). After 7-21 days in vitro, cells underwent immunocytochemistry or RNA extraction and RT-PCR. RESULTS Analysis of immunolabeling revealed a significant decrease in fibronectin expression in the cultures receiving 68 J/cm(2). Analysis of gene expression revealed a significant (P < 0.05) increase in brain derived neurotrophic factor (BDNF), glial derived neurotrophic factor (GDNF), and collagen expression in the 0.2 J/cm(2) group in comparison to the non-irradiated and 68 J/cm(2) groups. OEC proliferation was also found to significantly increase in both light treated groups in comparison to the control group (P < 0.001). CONCLUSIONS These results demonstrate that low and high dosages of PBM alter OEC activity, including upregulation of a number of neurotrophic growth factors and extracellular matrix proteins known to support neurite outgrowth. Therefore, the application of PBM in conjunction with OEC transplantation warrants consideration as a potential combination therapy for spinal cord injury.
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Affiliation(s)
- Kimberly R Byrnes
- Department of Neuroscience, Georgetown University, 3970 Reservoir Road NW, Washington, DC 20057, USA.
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Kipshidze N, Nikolaychik V, Keelan MH, Shankar LR, Khanna A, Kornowski R, Leon M, Moses J. Low-power helium: neon laser irradiation enhances production of vascular endothelial growth factor and promotes growth of endothelial cells in vitro. Lasers Surg Med 2001; 28:355-64. [PMID: 11344517 DOI: 10.1002/lsm.1062] [Citation(s) in RCA: 152] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND AND OBJECTIVE Numerous reports suggest that low-power laser irradiation (LPLI) is capable of affecting cellular processes in the absence of significant thermal effect. The objective of the present study was to determine the effect of LPLI on secretion of vascular endothelial growth factor (VEGF) and proliferation of human endothelial cells (EC) in vitro. STUDY DESIGN/MATERIALS AND METHODS Cell cultures were irradiated with single different doses of LPLI (Laser irradiance from 0.10 to 6.3 J/cm(2)) by using a He:Ne continuous wave laser (632 nm). VEGF secretion by smooth muscle cells (SMC) and fibroblasts was quantified by sandwich enzyme immunoassay technique. The endothelial cell proliferation was measured by Alamar Blue assay. VEGF and transforming growth factor beta (TGF-beta) expression by cardiomyocytes was studied by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS We observed that (1) LPLI of vascular and cardiac cells results in a statistically significant increase of VEGF secretion in culture (1.6-fold for SMC and fibroblasts and 7-fold for cardiomyocytes) and is dose dependent (maximal effect was observed with LPLI irradiance of 0.5 J/cm(2) for SMC, 2.1 J/cm(2) for fibroblasts and 1.05 J/cm(2) for cardiomyocytes). (2) Significant stimulation of endothelial cell growth was obtained with LPLI-treated conditioned medium of SMC (maximal increase was observed with LPLI conditioned medium with irradiance of 1.05 J/cm(2) for SMC and 2.1 J/cm(2) for fibroblasts. CONCLUSIONS Our studies demonstrate that low-power laser irradiation increases production of VEGF by SMC, fibroblasts, and cardiac myocytes and stimulates EC growth in culture. These data may have significant importance leading to the establishment of new methods for endoluminal postangioplasty vascular repair and myocardial photoangiogenesis.
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Affiliation(s)
- N Kipshidze
- Lenox Hill Heart and Vascular Institute and Cardiovascular Research Foundation, New York, New York 10021, USA
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