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Wiegand C, Dirksen A, Tittelbach J. Treatment with a red-laser-based wound therapy device exerts positive effects in models of delayed keratinocyte and fibroblast wound healing. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2024; 40:e12926. [PMID: 37957888 DOI: 10.1111/phpp.12926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/21/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023]
Abstract
BACKGROUND Light therapy is widely used in medicine. Specifically, photobiomodulation has been shown to exert beneficial effects in wound healing disorders, which present a major challenge in health care. The study's aim was providing information on the effect of a novel, red-laser-based wound therapy device (WTD) on keratinocytes and fibroblasts during wound healing under optimal and non-optimal conditions. METHODS The scratch wound assay was employed as a wound healing model for mechanical damage with readjustment of specific cell milieus, explicitly chronic TH1 inflammation and TH2-dominant conditions. Furthermore, gene expression analysis of pro-inflammatory cytokines (IL1A, IL6, CXCL8), growth factors (TGFB1, PDGFC), transcription factors (NFKB1, TP53) and heat shock proteins (HSP90AA1, HSPA1A, HSPD1) as well as desmogleins (DSG1, DSG3) in keratinocytes and collagen (COL1A1, COL3A1) in fibroblasts was performed after WTD treatment. RESULTS It was shown that WTD treatment is biocompatible and supports scratch wound closure under non-optimal conditions. A distinct enhancement of desmoglein and collagen gene expression as well as induction of early growth factor gene expression was observed under chronic inflammatory conditions. Moreover, WTD increased HSPD1 transcript levels in keratinocytes and augmented collagen expression in fibroblasts during wound healing under TH2 conditions. WTD treatment also alleviated the inflammatory response in keratinocytes and induced early growth factor gene expression in fibroblasts under physiological conditions. CONCLUSION Positive effects described for wound treatment with WTD could be replicated in vitro and seem to be to be conferred by a direct influence on cellular processes taking place in keratinocytes and fibroblasts during wound healing.
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Affiliation(s)
- Cornelia Wiegand
- Department of Dermatology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | | | - Jörg Tittelbach
- Department of Dermatology, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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2
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Taha MM, El-Nagar MM, Elrefaey BH, Elkholy RM, Ali OI, Alkhamees N, Felaya ESEES. Effect of Polarized Light Therapy (Bioptron) on Wound Healing and Microbiota in Diabetic Foot Ulcer: A Randomized Controlled Trial. Photobiomodul Photomed Laser Surg 2022; 40:792-799. [PMID: 36315226 DOI: 10.1089/photob.2021.0175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background: Diabetic foot ulcer (DFU) complications are the most common cause of morbidity in diabetic patients. Bioptron light therapy is a new adjuvant therapy for wound healing. This study aimed to investigate the effect of polarized light therapy on the healing and microbial nature of DFUs. Methods: Forty type 2 diabetic patients with Wagner grade 1 or 2 DFUs were randomly assigned to one of two groups: the light therapy group, which received Bioptron light therapy using the Bioptron lamp for 12 min three times per week, plus standard wound care, or the control group, which received standard wound care only. Both interventions were given over a 2-month period. Wound surface area, volume, and ulcer microbial cultures were all measured before and after the study period. Results: There was a significant reduction in ulcer surface area between groups in favor of the light therapy group, with a relative ulcer size reduction of 51.44% ± 23.76% compared with 24.5% ± 9.6% in the control group (p < 0.001). Besides, a significant difference was observed between groups in the microbial cultures (p = 0.02); by the end of the 8th week, the number of patients with negative ulcer culture was 12 (60%) in the light therapy group compared with 3 (15%) in the control group. Conclusions: Bioptron light therapy seems to be an effective therapeutic intervention combined with standard care in decreasing wound size and reducing ulcer microbiota for DFUs. It reduces ulcer bacterial infection and speeds up ulcer healing. Trial registration: ClinicalTrials.gov: NCT04446767.
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Affiliation(s)
- Mona Mohamed Taha
- Department of Rehabilitation, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mai M El-Nagar
- Department of Epidemiology, Internal and Geriatric Ganzour Hospital, Shebin El-Kom, Egypt
| | - Basant Hamdy Elrefaey
- Department of Physical Therapy for Internal Medicine, Faculty of Physical Therapy, Cairo University, Giza, Egypt.,Department of Medical Rehabilitation Sciences, College of Applied Medicine, King Khaled University, Abha, Kingdom of Saudi Arabia
| | - Reem Mohsen Elkholy
- Department of Clinical Pathology, Faculty of Medicine, Menoufia University, Shebin El-Kom, Egypt
| | - Olfat Ibrahim Ali
- Department of Basic Science for Physical Therapy, Faculty of Physical Therapy, Cairo University, Giza, Egypt.,Physical Therapy Program, Batterjee Medical College, Jeddah, Saudi Arabia
| | - Nouf Alkhamees
- Department of Rehabilitation, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
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Chen J, Sang Y, Li J, Zhao T, Liu B, Xie S, Sun W. Low-level controllable blue LEDs irradiation enhances human dental pulp stem cells osteogenic differentiation via transient receptor potential vanilloid 1. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 233:112472. [PMID: 35660312 DOI: 10.1016/j.jphotobiol.2022.112472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/04/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Human dental pulp stem cells (hDPSCs) have attracted tremendous attention in tissue regeneration engineering due to their excellent multidirectional differentiation potential. Photobiomodulation (PBM) using low-level light-emitting diodes (LEDs) or lasers has been proved to promote the osteogenesis of mesenchymal stem cells. However, the effect of LEDs on osteogenic differentiation of hDPSCs has little published data. In this work, the effect of blue LEDs with different energy densities of 2, 4, 6, 8, 10 J/cm2 on osteogenic differentiation of hDPSCs was examined by using in vitro ALP staining, ALP activity, mineralization, and real-time PCR. The results showed that compared with the control group, osteogenic differentiation was significantly enhanced in blue LEDs treated groups. As the energy density increased, the level of osteogenesis initially increased and then decreased reaching the highest level at 6 J/cm2. Transient receptor potential vanilloid 1 (TRPV1), a Ca2+ ion channel, was believed to be a potential player in osteogenesis by photobiomodulation. By immunofluorescence assay, calcium influx assay, PCR, and ALP staining, it was shown that blue LEDs irradiation can increase the activity of TRPV1 and intracellular calcium levels similarly to the agonist of TRPV1 capsaicin. Additionally, pretreatment with capsazepine, a selective TRPV1 inhibitor, was able to abrogate the osteogenic effect of blue LEDs. In conclusion, these findings proposed that blue LEDs can promote the osteogenesis of hDPSCs within the appropriate range (4-8 J/cm2) during culture of osteogenic medium, and TRPV1/Ca2+ may be an essential signaling pathway involved in blue LEDs-induced osteogenesis, providing new insights for the use of hDPSCs in tissue regeneration engineering.
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Affiliation(s)
- Jiaqi Chen
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Yimeng Sang
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Jiaying Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Tian Zhao
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Bin Liu
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Sijing Xie
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China.
| | - Weibin Sun
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China.
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Huang HH, Stillman TJ, Branham LA, Williams SC. The Effects of Photobiomodulation Therapy on Porcine Islet Insulin Secretion. Photobiomodul Photomed Laser Surg 2022; 40:395-401. [DOI: 10.1089/photob.2022.0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Han-Hung Huang
- Department of Physical Therapy, Angelo State University, Member, Texas Tech University System, San Angelo, Texas, USA
| | - Tori J. Stillman
- Department of Agriculture, and Angelo State University, Member, Texas Tech University System, San Angelo, Texas, USA
| | - Loree A. Branham
- Department of Agriculture, and Angelo State University, Member, Texas Tech University System, San Angelo, Texas, USA
| | - Scott C. Williams
- Department of Physics and Geosciences, Angelo State University, Member, Texas Tech University System, San Angelo, Texas, USA
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Wang J, Wang T, Zhang F, Zhang Y, Guo Y, Jiang X, Yang B. Roles of circular RNAs in osteogenic differentiation of bone marrow mesenchymal stem cells (Review). Mol Med Rep 2022; 26:227. [PMID: 35593273 PMCID: PMC9178710 DOI: 10.3892/mmr.2022.12743] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/10/2022] [Indexed: 11/06/2022] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) can differentiate into osteoblasts, chondrocytes, adipocytes and even myoblasts, and are therefore defined as pluripotent cells. BMSCs have become extremely important seed cells in gene therapy, tissue engineering, cell replacement therapy and regenerative medicine due to their potential in multilineage differentiation, self‑renewal, immune regulation and other fields. Circular RNAs (circRNAs) are a class of non‑coding RNAs that are widely present in eukaryotic cells. Unlike standard linear RNAs, circRNAs form covalently closed continuous loops with no 5' or 3' polarity. circRNAs are abundantly expressed in cells and tissues, and are highly conserved and relatively stable during evolution. Numerous studies have shown that circRNAs play an important role in the osteogenic differentiation of BMSCs. Further studies on the role of circRNAs in the osteogenic differentiation of BMSCs can provide a new theoretical and experimental basis for bone tissue engineering and clinical treatment.
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Affiliation(s)
- Jicheng Wang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Tengyun Wang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Fujie Zhang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Yangyang Zhang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Yongzhi Guo
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Xin Jiang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
| | - Bo Yang
- Department of Joint Surgery, Weifang People's Hospital, Weifang, Shandong 261000, P.R. China
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Coris JGF, Rahal SC, Fonseca-Alves CE, Mamprim MJ, Inamassu LR, Sampaio ABDA, Kano WT, Mesquita LDR, Silva Junior JIDS. Effect of low-level laser therapy on the membrane induced by the Masquelet technique at an orthotopic site in rabbits. Acta Cir Bras 2021; 36:e361003. [PMID: 34817024 PMCID: PMC8610207 DOI: 10.1590/acb361003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/20/2021] [Indexed: 01/22/2023] Open
Abstract
Purpose: To evaluate the low-level laser therapy (LLLT) on the membrane induced by the Masquelet technique in rabbits. Methods: Twelve Norfolk rabbits at approximately 3 months of age were used. A 1-cm segmental defect was induced in both radii, which were filled with polymethylmethacrylate cylinder. LLLT was used postoperatively in the bone defect of one of the forelimbs every 48 hours for 15 days. Six rabbits were euthanatized on third and sixth postoperative weeks. Results: In both forelimbs, radiographs showed new bone growth from radius cut ends on the third postoperative week and more advanced stage on the sixth postoperative week. Ultrasound showed induced membrane one week after the surgery. Histologically, there were no significant differences in the semi-quantitative score of inflammation intensity, total number of blood vessels, bone metaplasia, and collagen. The average thicknesses were 2,050.17 and 1,451.96 μm for control membranes and 2,724.26 and 2,081.03 μm for irradiated membranes, respectively, on third and sixth postoperative weeks. Vascular endothelial growth factor A (VEGF-A) and platelet derived growth factor (PDGF) expression were present in the induced membranes of control and irradiated forelimbs, but there was no significant difference. Conclusions: Based on assessment methods, it was not possible to demonstrate the effect of LLLT on the induced membrane.
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Huang SJ, Lee SY, Teng YH, Lee SD, Cheng YJ. Photobiomodulation Therapy to Promote Angiogenesis in Diabetic Mice with Hindlimb Ischemia. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2021; 39:453-462. [PMID: 34264768 DOI: 10.1089/photob.2020.4896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Objective: To assess whether photobiomodulation therapy (PBMT) induces angiogenesis in diabetic mice with hindlimb ischemia (HLI). Background: Patients with diabetes mellitus (DM) are at high risk of developing peripheral arterial disease (PAD) in the lower extremities. PBMT has been shown to promote angiogenesis both in vitro and in vivo and could be a treatment for DM patients with PAD. Methods: Femoral artery ligation/excision in mice was performed to induce HLI as an animal model of PAD. PBMT at a dose of 660 nm and 1.91 J/cm2 was delivered for 10 min on 5 consecutive days after the HLI surgery. Control mice received HLI only. Mice in the DM group were injected with streptozocin to induce diabetes before HLI surgery. Mice in the laser and DM+ laser groups received both HLI and PBMT, and the latter group had induced DM. After the laser treatment, lower limb blood flow was evaluated by laser Doppler. The capillary density and CD31 were analyzed by immunofluorescence staining, and protein levels of vascular endothelial growth factor (VEGF)-A, hypoxia-inducible factor-1α (HIF-1α), inducible nitric oxide synthase (iNOS), endothelial nitric oxide synthase (eNOS), and extracellular signal-regulated kinases (ERK) were measured by Western blotting of tissue samples. Results: Compared with the control and DM mice, the laser and DM+ laser groups had more than double the capillary density and blood perfusion rate. Levels of CD31 and VEGF-A proteins in groups that received laser were increased by 1.9- to 3.2-fold compared with groups that did not undergo laser treatment. Animals treated with PBMT exhibited significantly increased HIF-1α expression and ERK phosphorylation compared with animals that did not receive this treatment, and the amount of phospho-eNOS and iNOS increased and decreased, respectively. Conclusions: PBMT can induce therapeutic angiogenesis, indicating that low intensity laser could be a novel treatment for PAD patients.
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Affiliation(s)
- Shi-Jie Huang
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Shin-Yi Lee
- General Education Center, China Medical University, Taichung, Taiwan
| | - Yi-Hsien Teng
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Shin-Da Lee
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan
| | - Yu-Jung Cheng
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan.,Department of Rehabilitation, China Medical University Hospital, Taichung, Taiwan
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Naudin T, Thorel D, Tétart F, Muraine M, Gueudry J. [Combined Intense Pulsed Light and low-level light therapy in the treatment of Meibomian gland dysfunction]. J Fr Ophtalmol 2021; 44:1021-1028. [PMID: 34172298 DOI: 10.1016/j.jfo.2020.09.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/27/2020] [Accepted: 09/03/2020] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Meibomian gland dysfunction (MGD) is the most common cause of dry eye syndrome. The goal of this study was to evaluate the efficacy of combined intense pulsed light (IPL) and low-level light therapy (LLLT) in symptomatic MGD. MATERIALS AND METHODS This retrospective study analyzed data from 30 patients with MGD causing dry eye symptoms not relieved by medical therapy and managed with combined IPL and LLLT. The primary endpoint was the Ocular Score Disease Index (OSDI) score at 1 month and 1 year. Secondary endpoints were visual acuity, intraocular pressure, tear film break-up time, Schirmer's test, Oxford score, and infrared meibographic score at 1 month after the conclusion of treatment. RESULTS The mean OSDI score decreased from 43±19 to 17±12 (1 month; p<0.0001) and then to 29±11 (12 months; p=0.013); 63% of patients were meibographic grade 2 before versus 7% after treatment (range, 1-4) (p=0.009); 75% of patients were Oxford grade 1 before versus 41% after treatment (p=0.004) (range, 1-3). No significant difference in the other secondary endpoints was noted. CONCLUSION Over time, IPL therapy in combination with LLLT appears to improve patients with symptomatic MGD resistant to medical therapy.
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Affiliation(s)
- T Naudin
- Service d'ophtalmologie, hôpital Charles-Nicolle, CHU Rouen, 76000 Rouen, France
| | - D Thorel
- Service d'ophtalmologie, hôpital Charles-Nicolle, CHU Rouen, 76000 Rouen, France
| | - F Tétart
- Service de dermatologie, hôpital Charles-Nicolle, CHU Rouen, 76000 Rouen, France
| | - M Muraine
- Service d'ophtalmologie, hôpital Charles-Nicolle, CHU Rouen, 76000 Rouen, France
| | - J Gueudry
- Service d'ophtalmologie, hôpital Charles-Nicolle, CHU Rouen, 76000 Rouen, France.
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Haze A, Gavish L, Elishoov O, Shorka D, Tsohar T, Gellman YN, Liebergall M. Treatment of diabetic foot ulcers in a frail population with severe co-morbidities using at-home photobiomodulation laser therapy: a double-blind, randomized, sham-controlled pilot clinical study. Lasers Med Sci 2021; 37:919-928. [PMID: 34052927 DOI: 10.1007/s10103-021-03335-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/03/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE To evaluate the safety and efficacy of an at-home photobiomodulation (PBM) device for the treatment of diabetic foot ulcers (DFUs) in a frail population with severe comorbidities. METHODS Prospective, randomized, double-blind, sham-controlled pilot study. Patients (age = 63 ± 11 years, male:female 13:7) with insulin-dependent diabetes type 2, neuropathy, peripheral artery disease, significant co-morbidities, and large osteomyelitis-associated DFUs (University of Texas grade ≥ III) were randomized to receive active (n = 10) or sham (n = 10) at-home daily PBM treatments (pulsed near-infrared 808 nm Ga-Al-As laser, 250 mW, 8.8 J/cm2) for up to 12 weeks in addition to standard care. The primary outcome was the %wound size reduction. The secondary was adverse events. RESULTS With the numbers available, PBM-treated group had significantly greater %reduction compared to sham (area [cm2], baseline vs endpoint: PBM 10[20.3] cm2 vs 0.2[2.4] cm2; sham, 7.9 [12.0] cm2 vs 4.6 [13.8] cm2, p = 0.018 by Mann-Whitney U test). Wound closure > 90% occurred in 7 of 10 PBM-treated patients but in only 1 of 10 sham patients (p = 0.006). No adverse device effects were observed. CONCLUSIONS Photobiomodulation at home, in addition to standard care, may be effective for the treatment of severe DFUs in frail patients with co-morbidities and is particularly relevant at these times of social distancing. Our preliminary results justify the conduction of a larger clinical trial. ClinicalTrials.gov: NCT01493895.
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Affiliation(s)
- Amir Haze
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
| | - Lilach Gavish
- Institute for Research in Military Medicine (IRMM) of the Faculty of Medicine, The Hebrew University of Jerusalem, POB 12272, Jerusalem, 9112001, Israel.
| | - Ofer Elishoov
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
| | - Dorit Shorka
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
| | - Tamir Tsohar
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
| | - Yechiel N Gellman
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
| | - Meir Liebergall
- Orthopedic Department, Hadassah-Hebrew University Medical Center, POB 12000, 9112001, Jerusalem, Israel
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Yin Q, Chang H, Shen Q, Xing D. Photobiomodulation therapy promotes the ATP-binding cassette transporter A1-dependent cholesterol efflux in macrophage to ameliorate atherosclerosis. J Cell Mol Med 2021; 25:5238-5249. [PMID: 33951300 PMCID: PMC8178257 DOI: 10.1111/jcmm.16531] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 02/15/2021] [Accepted: 03/05/2021] [Indexed: 01/21/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory disease related to a massive accumulation of cholesterol in the artery wall. Photobiomodulation therapy (PBMT) has been reported to possess cardioprotective effects but has no consensus on the underlying mechanisms. Here, we aimed to investigate whether PBMT could ameliorate atherosclerosis and explore the potential molecular mechanisms. The Apolipoprotein E (ApoE)−/− mice were fed with western diet (WD) for 18 weeks and treated with PBMT once a day in the last 10 weeks. Quantification based on Oil red O‐stained aortas showed that the average plaque area decreased 8.306 ± 2.012% after PBMT (P < .05). Meanwhile, we observed that high‐density lipoprotein cholesterol level in WD + PBMT mice increased from 0.309 ± 0.037 to 0.472 ± 0.038 nmol/L (P < .05) compared with WD mice. The further results suggested that PBMT could promote cholesterol efflux from lipid‐loaded primary peritoneal macrophages and inhibit foam cells formation via up‐regulating the ATP‐binding cassette transporters A1 expression. A contributing mechanism involved in activating the phosphatidylinositol 3‐kinases/protein kinase C zeta/specificity protein 1 signalling cascade. Our study outlines that PBMT has a protective role on atherosclerosis by promoting macrophages cholesterol efflux and provides a new strategy for treating atherosclerosis.
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Affiliation(s)
- Qianxia Yin
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Haocai Chang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Qi Shen
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
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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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Liu N, Lu W, Qu X, Zhu C. LLLI promotes BMSC proliferation through circRNA_0001052/miR-124-3p. Lasers Med Sci 2021; 37:849-856. [PMID: 33884524 DOI: 10.1007/s10103-021-03322-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/11/2021] [Indexed: 12/13/2022]
Abstract
Osteoporosis (OP) is a multifactorial bone disease that occurs worldwide. The treatment of OP is still unsatisfactory. Bone mesenchymal stem cell (BMSC) differentiation is a key process in OP pathogenesis. Low-level laser irradiation (LLLI) has been reported to regulate BMSC proliferation, but the role of circRNAs in the LLLI-based promotion of BMSC proliferation remains unclear. CircRNAs are essential molecular regulators that participate in numerous biological processes and have therapeutic potential. miR-124-3p is an essential microRNA (miRNA), and its expression changes are related to BMSC proliferation ability. In the present study, gain-loss function of experiments demonstrated that circRNA_0001052 could regulate the proliferation of BMSCs by acting as a miR-124-3p sponge through the Wnt4/β-catenin pathway. The results of this study strongly suggest that circRNA_0001052 plays an essential role in BMSC proliferation in response to LLLI treatment, which is a potential therapeutic manipulation with clinical applications.
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Affiliation(s)
- Na Liu
- Department of Anesthesiology, The First People's Hospital of Yunnan Province, Kunming, 650032, China.,The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China.,Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Weiwei Lu
- Medical school, Kunming University of Science and Technology, Kunming, 650500, China
| | - Xiaowen Qu
- Laser Medical Center, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, No. 157 JinBi Road, Kunming, China.,The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China
| | - Chongtao Zhu
- Laser Medical Center, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, No. 157 JinBi Road, Kunming, China. .,The Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China.
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13
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Colombo E, Signore A, Aicardi S, Zekiy A, Utyuzh A, Benedicenti S, Amaroli A. Experimental and Clinical Applications of Red and Near-Infrared Photobiomodulation on Endothelial Dysfunction: A Review. Biomedicines 2021; 9:biomedicines9030274. [PMID: 33803396 PMCID: PMC7998572 DOI: 10.3390/biomedicines9030274] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Under physiological conditions, endothelial cells are the main regulator of arterial tone homeostasis and vascular growth, sensing and transducing signals between tissue and blood. Disease risk factors can lead to their unbalanced homeostasis, known as endothelial dysfunction. Red and near-infrared light can interact with animal cells and modulate their metabolism upon interaction with mitochondria's cytochromes, which leads to increased oxygen consumption, ATP production and ROS, as well as to regulate NO release and intracellular Ca2+ concentration. This medical subject is known as photobiomodulation (PBM). We present a review of the literature on the in vitro and in vivo effects of PBM on endothelial dysfunction. METHODS A search strategy was developed consistent with the PRISMA statement. The PubMed, Scopus, Cochrane, and Scholar electronic databases were consulted to search for in vitro and in vivo studies. RESULTS Fifty out of >12,000 articles were selected. CONCLUSIONS The PBM can modulate endothelial dysfunction, improving inflammation, angiogenesis, and vasodilatation. Among the studies, 808 nm and 18 J (0.2 W, 2.05 cm2) intracoronary irradiation can prevent restenosis as well as 645 nm and 20 J (0.25 W, 2 cm2) can stimulate angiogenesis. PBM can also support hypertension cure. However, more extensive randomised controlled trials are necessary.
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Affiliation(s)
- Esteban Colombo
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, 16132 Genoa, Italy; (E.C.); (A.S.); (S.B.)
| | - Antonio Signore
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, 16132 Genoa, Italy; (E.C.); (A.S.); (S.B.)
- Department of Therapeutic Dentistry, Faculty of Dentistry, First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Stefano Aicardi
- Department for the Earth, Environment and Life Sciences, University of Genoa, 16132 Genoa, Italy;
| | - Angelina Zekiy
- Department of Orthopaedic Dentistry, Faculty of Dentistry, First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (A.Z.); (A.U.)
| | - Anatoliy Utyuzh
- Department of Orthopaedic Dentistry, Faculty of Dentistry, First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (A.Z.); (A.U.)
| | - Stefano Benedicenti
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, 16132 Genoa, Italy; (E.C.); (A.S.); (S.B.)
| | - Andrea Amaroli
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences, University of Genoa, 16132 Genoa, Italy; (E.C.); (A.S.); (S.B.)
- Department of Orthopaedic Dentistry, Faculty of Dentistry, First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia; (A.Z.); (A.U.)
- Correspondence: ; Tel.: +39-010-3537309
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14
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Kim YJ, Jeon HR, Kim SW, Kim YH, Im GB, Im J, Um SH, Cho SM, Lee JR, Kim HY, Joung YK, Kim DI, Bhang SH. Lightwave-reinforced stem cells with enhanced wound healing efficacy. J Tissue Eng 2021; 12:20417314211067004. [PMID: 34987748 PMCID: PMC8721371 DOI: 10.1177/20417314211067004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/29/2021] [Indexed: 12/20/2022] Open
Abstract
Comprehensive research has led to significant preclinical outcomes in modified human adipose-derived mesenchymal stem cells (hADSCs). Photobiomodulation (PBM), a technique to enhance the cellular capacity of stem cells, has attracted considerable attention owing to its effectiveness and safety. Here, we suggest a red organic light-emitting diode (OLED)-based PBM strategy to augment the therapeutic efficacy of hADSCs. In vitro assessments revealed that hADSCs basked in red OLED light exhibited enhanced angiogenesis, cell adhesion, and migration compared to naïve hADSCs. We demonstrated that the enhancement of cellular capacity was due to an increased level of intracellular reactive oxygen species. Furthermore, accelerated healing and regulated inflammatory response was observed in mice transplanted with red light-basked hADSCs. Overall, our findings suggest that OLED-based PBM may be an easily accessible and attractive approach for tissue regeneration that can be applied to various clinical stem cell therapies.
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Affiliation(s)
- Yu-Jin Kim
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Hye Ran Jeon
- Department of Health Sciences and
Technology, SAIHST, Sungkyunkwan University, Gangnam-gu, Seoul, Republic of
Korea
- Division of Vascular Surgery,
Samsung Medical Center, Sungkyunkwan University School of Medicine,
Gangnam-gu, Seoul, Republic of Korea
| | - Sung-Won Kim
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Yeong Hwan Kim
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Gwang-Bum Im
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Jisoo Im
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Sung Min Cho
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
| | - Ju-Ro Lee
- Center for Biomaterials,
Biomedical Research Institute, Korea Institute of Science and Technology,
Seoungbuk-gu, Seoul, Republic of Korea
| | - Han Young Kim
- Department of Biomedical-Chemical
Engineering, The Catholic University of Korea, Bucheon, Gyeonggi, Republic
of Korea
| | - Yoon Ki Joung
- Center for Biomaterials,
Biomedical Research Institute, Korea Institute of Science and Technology,
Seoungbuk-gu, Seoul, Republic of Korea
- Division of Bio-Medical Science
& Technology, University of Science and Technology, Yuseong-gu, Daejeon,
Republic of Korea
| | - Dong-Ik Kim
- Department of Health Sciences and
Technology, SAIHST, Sungkyunkwan University, Gangnam-gu, Seoul, Republic of
Korea
- Division of Vascular Surgery,
Samsung Medical Center, Sungkyunkwan University School of Medicine,
Gangnam-gu, Seoul, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering,
Sungkyunkwan University, Suwon, Gyeonggi-do, Republic of Korea
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15
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Effects of photo-stimulation with laser or LED on the composition of Xanthan gum produced in media containing distilled water or dialyzed or not produced water by means of Raman spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 213:112057. [DOI: 10.1016/j.jphotobiol.2020.112057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/07/2020] [Accepted: 10/15/2020] [Indexed: 12/29/2022]
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16
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Porrini M, Garagiola U, Rossi M, Bosotti M, Marino S, Giannì AB, Runza L, Spadari F. Photobiomodulation and Miescher's cheilitis granulomatosa: case report. Maxillofac Plast Reconstr Surg 2020; 42:35. [PMID: 33102396 PMCID: PMC7575664 DOI: 10.1186/s40902-020-00279-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/04/2020] [Indexed: 11/10/2022] Open
Abstract
Background Miescher's cheilitis granulomatosa (MCG) is a rare chronic inflammatory disease and is known as the monosymptomatic clinical form of Melkersson-Rosenthal syndrome (MRS). It is characterised by swelling of one or both lips and more frequently affects the upper lip. Histopathological findings show the presence of numerous inflammatory infiltrates and granuloma formations. Pharmacological treatments and surgery have provided results that are positive yet insufficiently stable in the long term. The clinical case described is of a 68-year-old female patient with a diagnosis of MCG of the upper lip. Case presentation The patient was diagnosed and treated at the Oral Medicine and Oral Pathology outpatient clinic of Maxillofacial and Odontostomatology Unit, Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico. The patient was recommended localised treatments of photobiomodulation (PBM) using a diode laser with a 635 nm and 980 nm dual-wavelength (λ) approach, a 600-micron fibre, and a handpiece with a 1-cm-diameter lens at 300 mW. Three treatments a week were administered for four weeks for a total of 12 treatment sessions (T 1-T 12). After that, the patient had a long follow-up period of about 2 years. The therapeutic results were clear from the initial stages of treatment. There was an immediate, gradual, and consistent reduction in labial swelling. A reduction in the size of the lip by about 35% at T 10-T 12 was observed, returning the size and volume of the upper lip within the normal clinical range. The painful symptoms subsided after the seventh treatment (T 7). The histopathological check at 3 months and the follow-up in particular confirmed the disease was in remission with satisfactorily stable treatment results. Moreover, the patient did not use any other treatments on the area from the early laser treatments through to the end of the follow-up period. Conclusions Our experience describes a clinical case of MCG treated with PBM and effectively resolved with a reduction of the lip swelling. The real success of the treatment emerged over time, showing that the tissue healing was stable. In absence of any collateral phenomena, this confirms the effective and documented therapeutic potential of PBM for chronic inflammatory infiltrates.
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Affiliation(s)
- Massimo Porrini
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Umberto Garagiola
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Margherita Rossi
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Moreno Bosotti
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Sonia Marino
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Aldo Bruno Giannì
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
| | - Letterio Runza
- Division of Pathology, Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, Milan, Italy
| | - Francesco Spadari
- Department of Biomedical, Surgical and Dental Sciences-Maxillo-Facial and Odontostomatology Unit-Ospedale Maggiore Policlinico, Fondazione IRCCS Ca' Granda, University of Milan, via della Commenda 10, Milan, Italy
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17
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Chaudary S, Karner L, Weidinger A, Meixner B, Rieger S, Metzger M, Zipperle J, Dungel P. In vitro effects of 635 nm photobiomodulation under hypoxia/reoxygenation culture conditions. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111935. [PMID: 32622295 DOI: 10.1016/j.jphotobiol.2020.111935] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/15/2020] [Accepted: 06/10/2020] [Indexed: 12/18/2022]
Abstract
Photobiomodulation (PBM), especially in the red wavelength range, has been demonstrated to be an effective treatment option for superficial and chronic wounds. However, ischemia and subsequent reperfusion can further challenge wound healing. Therefore, we investigated the effect of pulsed red LED light at 635 nm on cellular function in an in-vitro model of hypoxia/reoxygenation (H/R) challenge. Mouse myoblasts and fibroblasts were incubated in oxygen-deprived starvation medium (hypoxia) for 3 h after which the media was changed to oxygenated, fully supplemented media to simulate reperfusion. Cells were then treated with pulsed red LED light at a wavelength of 635 nm at 40 mW/cm2. Mitochondrial respiratory activity, ATP production and ROS levels were analysed immediately post-illumination. The effects on cellular metabolic activity and proliferation were measured at 6 h and 24 h and apoptosis/necrosis was measured at 24 h post-illumination. Our results show that both cell types reacted differently to H/R challenge and PBM. PBM of H/R-challenged cells enhanced mitochondrial activity and rescued decreased ATP levels, with significant effects in fibroblasts. This was associated with increased cell proliferation rates in both cell types. The increase was again more pronounced in fibroblasts. Our study concluded that PBM with red LED light significantly restored ATP levels during H/R and effectively promoted cell growth under both normoxic and H/R conditions. In clinical applications, PBM has been repeatedly reported to resolve difficult clinical situations in which ischemia/reperfusion injuries are a major issue. Our study confirms the beneficial effects of PBM especially in H/R-challenged cells.
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Affiliation(s)
- Sidrah Chaudary
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Lisa Karner
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Adelheid Weidinger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Barbara Meixner
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Stefan Rieger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Magdalena Metzger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Johannes Zipperle
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Peter Dungel
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria.
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18
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RUMÃO WL, VALDRIGHI HC, FURLETTI VF, GOUVÊA GR, SANTAMARIA-JR M. Influence of photobiomodulation on pain perception during initial orthodontic tooth movement. REVISTA DE ODONTOLOGIA DA UNESP 2020. [DOI: 10.1590/1807-2577.00320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Abstract Introduction Laser in low intensity (LLI) has been used to reduce the discomfort and pain that is triggered by the forces applied during orthodontic treatment. Objective To evaluate the effect of LLI application in the pain perception of periodontal ligament initial compression, during orthodontic tooth movement; and to compare the effect of this therapy between men and women. Material and method The sample consisted of 30 volunteers, who needed orthodontic band placement on mandibular first molars. After insertion of the elastic separators, LLI was applied to the mesial and distal apical region (wavelength 808nm, energy 2J, time 20s and fluency of 8.32J/cm2) and at three points on the root region (wavelength 808nm, energy 1J, time 10s and fluency of 4.16J/cm2) of the first molar (irradiated side) and compared to the contralateral first molar (non-irradiated side), in three time intervals: 0hs, 24hs and 48hs. Pain perception was evaluated by the Visual Analog Scale (VAS), at 0hs, 24hs and 48hs after insertion, with significance of 5%. Result The pain level was observed to be significantly lower (p<0.05) on the irradiated side, irrespective of gender and time. Women presented a significantly higher pain level (p<0.05) than men, irrespective of time and side. There were no significant differences between the time intervals (p>0.05). Conclusion It was concluded that LLI reduced the perception of initial pain in patients in whom compression of the periodontal ligament was promoted by elastic separation, and that women had a greater perception of pain sensitivity in the time intervals studied.
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19
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Lueangarun S, Tempark T. Successful Treatment of Digital Ischemia Following a Carbon Dioxide Laser and Tourniquet for a Digital Procedure With Adjuvant Low-Level Laser Therapy. J Lasers Med Sci 2019; 10:254-256. [PMID: 31749955 DOI: 10.15171/jlms.2019.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A digital tourniquet with/without epinephrine is commonly used in local anesthetics when operating on digits. However, such a complication as digital ischemia could occur following tourniquet application. We reported an elderly patient with atherosclerotic risk factors and she subsequently underwent a digital tourniquet, partial nail plate removal, and a carbon dioxide laser treatment for subungual wart with digital gangrene development. The successful treatment consisted of wound-dressing, medication, and adjuvant low-level light therapy (LLLT) to enhance the wound healing process, thereby resulting in almost complete recovery of skin color and function of the digit in 3 months. In conclusion, the digital tourniquet should be cautiously applied, especially in elderly patients with atherothrombosis, under minimal pressure and appropriate length of time. Moreover, LLLT could be an effective adjuvant treatment to prevent the vascular complications of the digit.
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Affiliation(s)
- Suparuj Lueangarun
- Division of Dermatology, Chulabhorn International College of Medicine, Thammasat University, Amphur Klongluang, Pathumthani, Thailand 12120
| | - Therdpong Tempark
- Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University,1873 Rama 4 Rd., Pathumwan, Bangkok, Thailand 10330
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20
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Grześk E, Mackiewicz‑Milewska M, Mackiewicz‑Nartowicz H, Wiciński M, Burdziński I, Korsak M, Kopczyńska A, Hagner W, Grześk G. Modulatory effect of laser irradiation on mastoparan‑7‑induced contraction. Biomed Rep 2019; 12:23-29. [DOI: 10.3892/br.2019.1255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 08/20/2019] [Indexed: 11/05/2022] Open
Affiliation(s)
- Elżbieta Grześk
- Department of Pediatrics, Hematology and Oncology, Faculty of Medicine, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Magdalena Mackiewicz‑Milewska
- Department of Rehabilitation, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Hanna Mackiewicz‑Nartowicz
- Department of Phoniatry and Audiology, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Michał Wiciński
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Igor Burdziński
- Second Department of Cardiology, Division of Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Maryia Korsak
- Second Department of Cardiology, Division of Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Anna Kopczyńska
- Second Department of Cardiology, Division of Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Wojciech Hagner
- Department of Rehabilitation, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
| | - Grzegorz Grześk
- Second Department of Cardiology, Division of Clinical Pharmacology, Faculty of Health Sciences, Collegium Medicum, Nicolaus Copernicus University, 85‑094 Bydgoszcz, Poland
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21
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Stonecipher K, Potvin R. Low level light therapy for the treatment of recalcitrant chalazia: a sample case summary. Clin Ophthalmol 2019; 13:1727-1733. [PMID: 31564823 PMCID: PMC6734093 DOI: 10.2147/opth.s225506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/29/2019] [Indexed: 01/30/2023] Open
Abstract
Purpose To evaluate the effects of low-level light therapy (LLLT) on the resolution of recalcitrant chalazia. Patients and Methods This was a single-site retrospective chart review of patients with chalazia, all of whom were unresponsive to previous pharmaceutical therapy or surgical intervention, who received a 15 min LLLT treatment in conjunction with a standard pharmaceutical regimen. A second treatment was applied 24 hrs to as late as 2 months if there was no evidence of progression of resolution in appearance. Results A total of 26 eyes of 22 patients with relevant history and treatment were reviewed, all with a history of prior pharmaceutical treatment for their chalazia. After a single 15 min LLLT treatment, followed by a standard pharmaceutical regimen, 46% of eyes (12/26) showed resolution of their chalazia. Resolution was noted from 3 days to one-month post-treatment. With a second treatment, the chalazia resolved in 92% of eyes (24/26). Only two eyes of the 26 (8%) required incision and curettage after LLLT treatment. Conclusion The use of LLLT for the treatment of recalcitrant chalazia appears to be beneficial in patients who have failed topical and/or systemic therapy, significantly reducing the likelihood of requiring surgical intervention.
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Luca RE, Todea CD, Duma VF, Bradu A, Podoleanu AG. Quantitative assessment of rat bone regeneration using complex master-slave optical coherence tomography. Quant Imaging Med Surg 2019; 9:782-798. [PMID: 31281774 DOI: 10.21037/qims.2019.05.03] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background The need for hard and soft tissues in oral implantology determined the development of methods and techniques to increase bone volume and their quality with different alternative materials used as substituents of patient's natural bone. In addition, laser radiation can be used to accelerate the repair of fractures and to produce an increased volume of formed callus, as well as an increased bone mineral density. Methods The aim of this work is to evaluate the capability of an in-house developed multimodal complex master slave (CMS) enhanced swept source (SS) optical coherence tomography (OCT) imaging instrument to analyze the increase in the quantity and the improvement of the quality of newly-formed bone using low level laser therapy (LLLT). Bone formation is quantitatively assessed in 5 mm cylindrical defects made in the calvaria part of the skull of living rats. Samples are divided in three study groups: A, a negative control group, for which the natural healing process of the defect is investigated; B, a positive control group, for which bovine graft is used to stimulate bone formation, and C, a study group, in which bovine graft is added to the created defects and LLLT is applied throughout the entire healing period. The animals are sacrificed after 14, 21, and 30 days, and the samples are imaged using the multimodal CMS/SS-OCT instrument. Results The method allows for the simultaneous monitoring of the bone tissue via two perpendicular cross-sections and nine en-face images taken at adjustable depths into the sample. A global image with course axial resolution allows for the positioning of the field-of-view of the system on the area of interest on the tissue. The quantitative assessment of the process of bone formation is completed using the differences in brightness between the native bone, the artificial bone graft, and the newly-formed bone. Conclusions Group C is demonstrated to have a higher volume of newly-formed bone than Group B, which is better from this point of view than Group A. By analyzing the evolution of this volume of new bone in time, the most significant difference was after 21 days, therefore approximately after two thirds of the total time interval analyzed. After 30 days, the volumes of bone tend to move closer, as they begin to fill the available gap. The study demonstrates that OCT can assess quantitatively the positive impact of LLLT on bone regeneration.
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Affiliation(s)
- Ruxandra Elena Luca
- School of Dental Medicine, Victor Babeş University of Medicine and Pharmacy, Timisoara, Romania
| | - Carmen Darinca Todea
- School of Dental Medicine, Victor Babeş University of Medicine and Pharmacy, Timisoara, Romania
| | - Virgil-Florin Duma
- 3OM Optomechatronics Group, Faculty of Engineering, Aurel Vlaicu University of Arad, Arad, Romania.,Doctoral School, Polytechnic University of Timisoara, Timisoara, Romania
| | - Adrian Bradu
- School of Physical Sciences, University of Kent, Canterbury, UK
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Irradiation by blue light-emitting diode enhances osteogenic differentiation in gingival mesenchymal stem cells in vitro. Lasers Med Sci 2019; 34:1473-1481. [PMID: 30826951 DOI: 10.1007/s10103-019-02750-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/12/2019] [Indexed: 01/07/2023]
Abstract
The aim of this study was to investigate the effects of blue light irradiation on the process of osteogenic differentiation in stem cells. The cells used in this study were derived from human gingival mesenchymal stem cells (hGMSCs), and were treated with 0 (control group), 1, 2, 4 or 6 J/cm2 blue light using blue light-emitting diodes. Cell growth was assessed by the 3-(4,5-Dimethyl-2-thiazolyl)-2,5-Diphenyl-2H-tetrazolium bromide (MTT) cell proliferation assay and osteogenic differentiation was evaluated by monitoring alkaline phosphatase (ALP) activity, alizarin red staining and real-time PCR (RT-PCR). The results of the MTT assay indicated that blue light inhibited hGMSC proliferation, and the ALP and alizarin red results showed that blue light promoted osteogenesis. The expression levels of the osteogenic genes runt-related transcription factor2 (Runx2), collagen type I (Col1) and osteocalcin (OCN) increased significantly (P < 0.05) when cells were irradiated with 2 or 4 J/cm2 of blue light. In conclusion, irradiation with blue light inhibits the proliferation of hGMSC and promotes osteogenic differentiation.
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Zaniboni E, Bagne L, Camargo T, do Amaral MEC, Felonato M, de Andrade TAM, Dos Santos GMT, Caetano GF, Esquisatto MAM, Santamaria M, Mendonça FAS. Do electrical current and laser therapies improve bone remodeling during an orthodontic treatment with corticotomy? Clin Oral Investig 2019; 23:4083-4097. [PMID: 30771000 DOI: 10.1007/s00784-019-02845-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 02/07/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Evaluate the bone remodeling during orthodontic movement with corticotomy when submitted to low-intensity electrical stimulation application (microcurrent-MC) and low-level laser therapy (LLLT). MATERIAL AND METHODS One hundred and fifty Wistar rats were divided into the following 5 groups: (C) submitted to tooth movement; (Cort) tooth movement/corticotomy; (Cort-L) tooth movement/corticotomy/laser AsGaAl 808 nm (4.96J/50s); (Cort-Mc) tooth movement/corticotomy/microcurrent (10 μA/5 min); (Cort-L-Mc) tooth movement/corticotomy and laser/microcurrent alternated. Inflammation, angiogenesis, and osteogenesis were evaluated in the periodontal ligament (PDL) and alveolar bone on the 7th, 14th, and 21st days of orthodontic movement. RESULTS The quantification of inflammatory infiltrate, angiogenesis and expression of TGF-β1, VEGF, and collagen type I were favorably modulated by the application of therapies such as low-level laser therapy (LLLT), MC, or both combined. However, electrical stimulation increased fibroblasts, osteoclasts and RANK numbers, birefringent collagen fiber organization, and BMP-7 and IL-6 expression. CONCLUSIONS Low-level laser therapy (LLLT) and MC application both improved the process of bone remodeling during orthodontic treatment with corticotomy. Still, electrical current therapy promoted a more effective tooth displacement but presented expected root resorption similar to all experimental treatments. CLINICAL RELEVANCE It is important to know the effects of minimally invasive therapies on cellular and molecular elements involved in the bone remodeling of orthodontic treatment associated with corticotomy surgery, in order to reduce the adverse effects in the use of this technique and to establish a safer clinical routine.
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Affiliation(s)
- Ewerton Zaniboni
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Leonardo Bagne
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thaís Camargo
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maria Esméria Corezola do Amaral
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maira Felonato
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thiago Antônio Moretti de Andrade
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Gláucia Maria Tech Dos Santos
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Guilherme Ferreira Caetano
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Marcelo Augusto Marreto Esquisatto
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Milton Santamaria
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil. .,Graduate Program of Orthodontics, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil.
| | - Fernanda Aparecida Sampaio Mendonça
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
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Avila R, Tamariz E, Medina-Villalobos N, Andilla J, Marsal M, Loza-Alvarez P. Effects of near infrared focused laser on the fluorescence of labelled cell membrane. Sci Rep 2018; 8:17674. [PMID: 30518772 PMCID: PMC6281678 DOI: 10.1038/s41598-018-36010-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 11/09/2018] [Indexed: 11/12/2022] Open
Abstract
Near infrared (NIR) laser light can have important reactions on live cells. For example, in a macroscopic scale, it is used therapeutically to reduce inflammation and in a single-cell scale, NIR lasers have been experimentally used to guide neuronal growth. However, little is known about how NIR lasers produce such behaviours on cells. In this paper we report effects of focussing a continuous wave 810-nm wavelength laser on in vivo 3T3 cells plasma membrane. Cell membranes were labelled with FM 4-64, a dye that fluoresces when associated to membrane lipids. Confocal microscopy was used to image cell membranes and perform fluorescence recovery after photobleaching (FRAP) experiments. We found that the NIR laser produces an increase of the fluorescence intensity at the location of laser spot. This intensity boost vanishes once the laser is turned off. The mean fluorescence increase, calculated over 75 independent measurements, equals 19%. The experiments reveal that the fluorescence rise is a growing function of the laser power. This dependence is well fitted with a square root function. The FRAP, when the NIR laser is acting on the cell, is twice as large as when the NIR laser is off, and the recovery time is 5 times longer. Based on the experimental evidence and a linear fluorescence model, it is shown that the NIR laser provokes a rise in the number of molecular associations dye-lipid. The results reported here may be a consequence of a combination of induced increments in membrane fluidity and exocytosis.
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Affiliation(s)
- Remy Avila
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México (UNAM), A. P. 1-1010, Juriquilla, 76000, Querétaro, Mexico. .,ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain.
| | - Elisa Tamariz
- Instituto de Ciencias de la Salud, Universidad Veracruzana, Avenicda Luis Castelazo Ayala s/n, Xalapa, 91190, Veracruz, Mexico
| | - Norma Medina-Villalobos
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain.,Instituto de Ciencias de la Salud, Universidad Veracruzana, Avenicda Luis Castelazo Ayala s/n, Xalapa, 91190, Veracruz, Mexico
| | - Jordi Andilla
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain
| | - María Marsal
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain
| | - Pablo Loza-Alvarez
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain
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Photobiological effect of Laser or LED light in a thermophilic microbial consortium. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 181:115-121. [DOI: 10.1016/j.jphotobiol.2018.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/24/2018] [Accepted: 03/05/2018] [Indexed: 11/22/2022]
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Kazemikhoo N, Vaghardoost R, Dahmardehei M, Mokmeli S, Momeni M, Nilforoushzadeh MA, Ansari F, Razagi MR, Razagi Z, Amirkhani MA, Masjedi MR. Evaluation of the Effects of Low Level Laser Therapy on the Healing Process After Skin Graft Surgery in Burned Patients (A Randomized Clinical Trial). J Lasers Med Sci 2018; 9:139-143. [PMID: 30026900 PMCID: PMC6046389 DOI: 10.15171/jlms.2018.26] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Introduction: Skin graft is the standard therapeutic technique in patients with deep ulcers, but like every surgical procedure, it may present some complications. Although several modern dressings are available to enhance comfort of donor site, the use of techniques that accelerate wound healing may enhance patient's satisfaction. Low level laser therapy (LLLT) has been used in several medical fields, especially for wound healing, but it may take several months for large ulcers treated with laser to heal completely. Methods: Nine patients with bilateral similar grade 3 burn ulcers in both hands or both feet were selected as candidates for split-thickness skin graft (STSG). One side was selected for laser irradiation and the other side as control, randomly. Laser was irradiated every day for 7 days with red 655 nm light, 150 mW, 2 J/cm2 at the bed of the ulcer and with infra-red 808 nm light, 200 mW for the margins. Results: The rate of wound dehiscence after skin graft surgery was significantly lower in laser treated group in comparison to control group which received only classic dressing (P=0.019). Conclusion: The results showed LLLT to be a safe effective method which improves graft survival and wound healing process and decreases the rate of wound dehiscence in patients with deep burn ulcers.
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Affiliation(s)
| | - Reza Vaghardoost
- Burn Research Center, Department of Plastic and Reconstructive Surgery, Iran University of Medical Sciences, Tehran, Iran
| | - Mostafa Dahmardehei
- Burn Research Center, Department of Plastic and Reconstructive Surgery, Iran University of Medical Sciences, Tehran, Iran
| | | | - Mahnoush Momeni
- Burn Research Center, Department of Plastic and Reconstructive Surgery, Iran University of Medical Sciences, Tehran, Iran
| | | | - Fereshteh Ansari
- Skin Diseases and Leshmaniasis Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Reza Razagi
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Razagi
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Reza Masjedi
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mackiewicz-Milewska M, Grześk E, Kroszczyński AC, Cisowska-Adamiak M, Mackiewicz-Nartowicz H, Baran L, Szymkuć-Bukowska I, Wiciński M, Hagner W, Grześk G. The influence of low level laser irradiation on vascular reactivity. Adv Med Sci 2018; 63:64-67. [PMID: 28822265 DOI: 10.1016/j.advms.2017.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 04/28/2017] [Accepted: 06/06/2017] [Indexed: 11/26/2022]
Abstract
PURPOSE The mechanism of action of low level laser irradiation on tissues is unclear. Authors of publications present the positive clinical impact of low and medium power laser irradiation on vascular reactivity. The purpose of this study was to analyze the role of vascular endothelium in laser-induced constricted by endothelin-1 and phenylephrine. MATERIALS AND METHODS Experiments were performed on isolated and perfused rat tail arteries of weighing 250-350g male Wistar rats. Contractility of arteries as a response to endothelin-1 and phenylephrine was measured after exposure to laser stimulation (10, 30 and 110mW). RESULTS Laser irradiation inhibits vascular smooth muscle contraction induced by endothelin-1 and an alpha-adrenergic receptor agonist, phenylephrine proportionally to the laser power. Concentration-response curves were shifted to the right with significant reduction in maximal response. Laser irradiation at the power of 10mW, 30mW, and 110mW reduced the maximum response of arteries stimulated with phenylephrine sequentially to 88%, 72%, and 52%. Similar findings were observed during stimulation of endothelin-1. Laser irradiation at the power of 10mW, 30mW and 110mW resulted in maximal response respectively reduced to 94%, 62% and 38%. CONCLUSION Our results strongly suggest that during low level laser irradiation vascular smooth muscle cells reactivity is reduced, this effect is present in arteries with normal endothelium. The mechanism of action of laser biosimulation on tissues is unclear. Authors of publications present the positive clinical impact of low level laser irradiation on vascular reactivity.
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The effect of polarized light on the organization of collagen secreted by fibroblasts. Lasers Med Sci 2017; 33:539-547. [DOI: 10.1007/s10103-017-2398-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
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Laser photobiomodulation in pressure ulcer healing of human diabetic patients: gene expression analysis of inflammatory biochemical markers. Lasers Med Sci 2017; 33:165-171. [PMID: 29181642 DOI: 10.1007/s10103-017-2384-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 11/06/2017] [Indexed: 12/18/2022]
Abstract
Pressure ulcers (PU) are wounds located mainly on bone surfaces where the tissue under pressure suffers ischemia leading to cellular lesion and necrosis , its causes and the healing process depend on several factors. The aim of this study was evaluating the gene expression of inflammatory/reparative factors: IL6, TNF, VEGF, and TGF, which take part in the tissue healing process under effects of low-level laser therapy (LLLT). In order to perform lesion area analysis, PUs were photographed and computer analyzed. Biochemical analysis was performed sa.mpling ulcer border tissue obtained through biopsy before and after laser therapy and quantitative real-time PCR (qRT-PCR) analysis. The study comprised eight individuals, mean age sixty-two years old, and sacroiliac and calcaneous PU, classified as degree III and IV according to the National Pressure Ulcer Advisory Panel (NPUAP). PUs were irradiated with low-level laser (InGaAIP, 100 mW, 660 nm), energy density 2 J/cm2, once a day, with intervals of 24 h, totaling 12 applications. The lesion area analysis revealed averaged improvement of the granulation tissue size up to 50% from pre- to post-treatment. qRT-PCR analysis revealed that IL6 values were not significantly different before and after treatment, TNF gene expression was reduced, and VEFG and TGF-β gene expression increased after treatment. After LLLT, wounds presented improvement in gross appearance, with increase in factors VEFG and TGF-β, and reduction of TNF; despite our promising results, they have to be analyzed carefully as this study did not have a control group.
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Palubinskas G, Žilaitis V, Antanaitis R. Improvement of dairy cow embryo yield with low level laser irradiation. Pol J Vet Sci 2017; 20:307-312. [PMID: 28865223 DOI: 10.1515/pjvs-2017-0037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The goal of this study is to estimate the effects of low-level laser irradiation (LLLI) on the superovulatory response according to the number of corpora lutea (CL), follicles (F) and the embryo yield. In recent years, while searching for new, more efficient and organic methods to improve superovulatory response and embryo yield with respect to the conventional methods, low-level laser irradiation (LLLI) is a more sensitive and less costly technology that can be used to improve animal reproduction, namely, artificial insemination and the embryo production system. The dairy-cow donors were treated for superovulation with Pluset®, at any time during the oestrus cycle, and the total dose per donor was 700 IU. The first group of the donors (n=25), test group (TG), was irradiated on the sacroiliac area for 180 seconds per day, from the 1st to 11th superovulatory treatment (ST) days in a row, with LLLI in the 870-970-nm wavelength, 65.93 J/cm dose, frequencies in the 20-2000 Hz range and pulse durations commonly in the range of about 1 second. For the second control group (CG) (n=25), the ST was performed without LLLI. After the ST, The mean number of CL in the right side ovaries in the TG was 25.43% (p<0.05) greater than in those of the CG. The number of total recovered and transferable embryos was greater in the TG compared with the CG by 28.97% (p<0.05) and 15.8% (p>0.05), respectively. With respect to conventional methods, LLLI can be used to improve the superovulatory response and embryo yield as a supplementary environment and animal-friendly method of treatment.
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Montazeri K, Mahmoudian S, Razaghi Z, Farhadi M. Alterations in Auditory Electrophysiological Responses Associated With Temporary Suppression of Tinnitus Induced by Low-Level Laser Therapy: A Before-After Case Series. J Lasers Med Sci 2017; 8:S38-S45. [PMID: 29071034 DOI: 10.15171/jlms.2017.s8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introduction: Tinnitus is the phantom auditory perception of sound in the absence of an external or internal acoustic stimulus. The treatment is difficult due to multiple etiologies and great psychological influence. The purpose of this study was to determine alterations in auditory physiological and electrophysiological responses associated with temporary suppression of tinnitus induced by low-level laser (LLL) irradiation. Methods: This study was conducted on 20 subjects with subjective tinnitus. All subjects signed the informed consent form and satisfied all the study eligibility criteria. Visual analog scale (VAS) for loudness, loudness matching of tinnitus (LMT), pitch matching of tinnitus (PMT), Persian-tinnitus questionnaire (P-TQ) and Persian-tinnitus handicap inventory (P-THI) were conducted pre- and post-low level laser therapy (LLLT) for all the subjects. Electrocochleography (ECochG) and distortion product otoacoustic emissions (DPOAEs) were recorded in 11 subjects. Continuous wave diode lasers, including red (630 nm) and infra-red (808 nm) were applied, and were both designed by the Canadian Optic and Laser (COL) Center. Twelve sessions of laser therapy were performed, 2 sessions per week for each subject. Total dose was 120 Joule/ ear/session. Results: LLL irradiation could cause a significant decrease in subjective tests scores consisting of VAS for loudness, PMT, P-TQ, P-THI, but did not result in a significant improvement of objective evaluating parameters except for compound action potential (CAP) amplitude. Conclusion: LLLT might be a subjectively effective treatment for short-term improvement of tinnitus. Defining a new protocol for optimizing LLLT parameters may be an option to improve parameters of objective tests.
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Affiliation(s)
- Katayoon Montazeri
- Laboratory for Auditory Neuroscience, ENT and Head & Neck Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Saeid Mahmoudian
- Laboratory for Auditory Neuroscience, ENT and Head & Neck Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Razaghi
- Laser Application in Medical Sciences Research Center (LAMSRC), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Farhadi
- Laboratory for Auditory Neuroscience, ENT and Head & Neck Research Center, Iran University of Medical Sciences, Tehran, Iran
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Enhanced survival of ischemic skin flap by combined treatment with bone marrow-derived stem cells and low-level light irradiation. Lasers Med Sci 2017; 33:1-9. [DOI: 10.1007/s10103-017-2312-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/15/2017] [Indexed: 10/19/2022]
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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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Maldonado Fernández M, Shin J, Scherer RW, Murdin L. Interventions for tinnitus in adults: an overview of systematic reviews. Hippokratia 2017. [DOI: 10.1002/14651858.cd011795.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Jennifer Shin
- Brigham and Women's Hospital, Massachusetts General Hospital; Department of Surgery - Otolaryngology; 75 Francis Street Boston MA USA 02115
| | - Roberta W Scherer
- Johns Hopkins Bloomberg School of Public Health; Department of Epidemiology; Room W6138 615 N. Wolfe St. Baltimore Maryland USA 21205
| | - Louisa Murdin
- Faculty of Brain Sciences, University College London; Ear Institute; London UK
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Laser photobiomodulation (830 and 660 nm) in mast cells, VEGF, FGF, and CD34 of the musculocutaneous flap in rats submitted to nicotine. Lasers Med Sci 2016; 32:335-341. [PMID: 27913969 DOI: 10.1007/s10103-016-2118-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/22/2016] [Indexed: 12/20/2022]
Abstract
The aim of this study was to investigate the effect of laser photobiomodulation (PBM) on the viability of the transverse rectus abdominis musculocutaneous (TRAM) flap in rats subjected to the action of nicotine. We evaluated 60 albino Wistar rats, divided into six groups of ten animals. Group 1 (saline) underwent the surgical technique to obtain a TRAM flap; group 2 (laser 830 nm) underwent the surgical technique and was irradiated with a laser 830 nm; group 3 (laser 660 nm) underwent the surgical technique and was irradiated with a laser 660 nm; group 4 was treated with nicotine subcutaneously (2 mg/kg/2×/day/4 weeks) and underwent surgery; group 5 (nicotine + laser 830 nm) was exposed to nicotine, underwent the surgical technique, and was irradiated with a laser 830 nm; group 6 (nicotine + laser 660 nm) was exposed to nicotine, underwent the surgical technique, and was irradiated with a laser 660 nm. The application of PBM occurred immediately after surgery and on the two following days. The percentage of necrosis was assessed using the AxioVision® software. The number of mast cells (toluidine blue staining) was evaluated, and immunohistochemistry was performed to detect vascular endothelial growth factor expression (anti-VEGF-A), fibroblasts (anti-basic FGF), and neoformed vessels (anti-CD34). PBM with a wavelength of 830 nm increased the viability of the TRAM flap, with a smaller area of necrosis, increased number of mast cells, and higher expression of VEGF and CD34. PBM increases the viability of musculocutaneous flaps treated with to nicotine.
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Effectiveness of antimicrobial photodynamic therapy (AmPDT) on Staphylococcus aureus using phenothiazine compound with red laser. Lasers Med Sci 2016; 32:29-34. [DOI: 10.1007/s10103-016-2079-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 09/12/2016] [Indexed: 01/22/2023]
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Derkacz A, Protasiewicz M, Rola P, Podgorska K, Szymczyszyn A, Gutherc R, Poręba R, Doroszko A. Effects of intravascular low-level laser therapy during coronary intervention on selected growth factors levels. Photomed Laser Surg 2016; 32:582-7. [PMID: 25302462 DOI: 10.1089/pho.2013.3700] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE The objective of this study was to evaluate the effect of intravascular low-level laser therapy (LLLT) on selected growth factor levels in subjects undergoing percutaneous coronary interventions (PCI). BACKGROUND DATA Restenosis remains the main problem with the long-term efficacy of PCI, and growth factors are postulated to play a crucial role in the restenosis cascade. MATERIALS AND METHODS In a randomized prospective study, an 808 nm LLLT (100 mW/cm2, continuous wave laser, 9 J/cm2, illuminated area 1.6-2.5 cm2) was delivered intracoronarily to patients during PCI. Fifty-two patients underwent irradiation with laser light, and 49 constituted the control group. In all individuals, serum levels of insulin-like growth factor-1 (IGF-1), vascular endothelial growth factor (VEGF), transforming growth factor-β1 (TGF-β1), and fibroblast growth factor-2 (FGF-2) were measured before angioplasty, then 6 and 12 h and 1 month after the procedure. In all patients, a control angiography was performed 6 months later. RESULTS There were no significant differences in IGF-1 and VEGF levels between the groups. While evaluating FGF-2, we observed its significantly lower levels in the irradiated patients during each examination. There was a significant increase in TGF-β1 level in control group after 12 h of observation. In the irradiated individuals, control angiography revealed smaller late lumen loss and smaller late lumen loss index as compared with the control group. The restenosis rate was 15.0% in the treated group, and 32.4% in the control group, respectively. CONCLUSIONS LLLT decreases levels of TGF-β1 and FGF-2 in patients undergoing coronary intervention, which may explain smaller neointima formation.
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Affiliation(s)
- Arkadiusz Derkacz
- 1 Department of Internal Medicine and Hypertension, Wroclaw Medical University , Wroclaw, Poland
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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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Bisphosphonate-related osteonecrosis of the jaw: a review of the potential efficacy of low-level laser therapy. Support Care Cancer 2016; 24:3687-93. [DOI: 10.1007/s00520-016-3139-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 02/22/2016] [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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Effect of Nd:YAG Low Level Laser Therapy on Human Gingival Fibroblasts. Int J Dent 2015; 2015:258941. [PMID: 26504463 PMCID: PMC4609450 DOI: 10.1155/2015/258941] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/05/2015] [Accepted: 09/09/2015] [Indexed: 11/26/2022] Open
Abstract
Aim. To evaluate the effect of Low Level Laser Therapy (LLLT) on human gingival fibroblasts in terms of proliferation and growth factors' secretion (EGF, bFGF, and VEGF). Materials and Methods. Primary cultures of keratinized mucosa fibroblasts were irradiated by a Nd:YAG laser 1064 nm with the following energy densities: 2.6 J/cm2, 5.3 J/cm2, 7.9 J/cm2, and 15.8 J/cm2. Controls were not irradiated. Cultures were examined for cell proliferation and growth factors' secretion after 24, 48, and 72 hours. All experimental procedures were performed in duplicate. Data were analyzed by Student's t-test (p < 0.05). Results. All laser-irradiation doses applied promoted a higher cell proliferation at 48 hours in a dose-response relationship compared to controls. This difference reached statistical significance for the cultures receiving 15.8 J/cm2 (p = 0.03). Regarding EGF, all laser irradiation doses applied promoted a higher secretion at 48 hours in a reverse dose-response pattern compared to controls. This difference reached statistical significance for the cultures receiving 2.6 J/cm2 (p = 0.04). EGF levels at the other time points, bFGF, and VEGF showed a random variation between the groups. Conclusion. Within the limits of this study, LLLT (Nd:YAG) may induce gingival fibroblasts' proliferation and upregulate the secretion of EGF. Further studies are needed to confirm these results.
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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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Maldonado Fernández M, Shin J, Scherer RW, Murdin L. Interventions for tinnitus in adults: an overview of systematic reviews. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2015. [DOI: 10.1002/14651858.cd011795] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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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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Are the mitochondrial respiratory complexes blocked by NO the targets for the laser and LED therapy? Lasers Med Sci 2014; 30:173-80. [PMID: 25118663 DOI: 10.1007/s10103-014-1639-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 07/30/2014] [Indexed: 10/24/2022]
Abstract
Effects of laser (442 and 532 nm) and light-emitting diode (LED) (650 nm) radiation on mitochondrial respiration and mitochondrial electron transport rate (complexes II-III and IV) in the presence of nitric oxide (NO) were investigated. It was found that nitric oxide (300 nM-10 μM) suppresses mitochondrial respiration. Laser irradiation of mitochondria (442 nm, 3 J cm(-2)) partly restored mitochondrial respiration (approximately by 70 %). Irradiation with green laser (532 nm) or red LED (650 nm) in the same dose had no reliable effect. Evaluation of mitochondrial electron transport rate in complexes II-III and IV and effects of nitric oxide demonstrated almost similar sensitivity of complex II-III and IV to NO, with approximately 50 % inhibition at NO concentration of 3 μM. Subsequent laser or LED irradiation (3 J cm(-2)) showed partial recovery of electron transport only in complex IV and only under irradiation with blue light (442 nm). Our results support the hypothesis of the crucial role of cytochrome c oxidase (complex IV) in photoreactivation of mitochondrial respiration suppressed by NO.
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de Castro JFL, Abreu EGF, Correia AVL, da Mota Vasconcelos Brasil C, da Cruz Perez DE, de Paula Ramos Pedrosa F. Low-Level Laser in Prevention and Treatment of Oral Mucositis in Pediatric Patients with Acute Lymphoblastic Leukemia. Photomed Laser Surg 2013; 31:613-8. [DOI: 10.1089/pho.2012.3327] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
| | | | - Andreza Veruska Lira Correia
- Postgraduate Program in Dentistry, Oral Pathology Unit, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Danyel Elias da Cruz Perez
- Postgraduate Program in Dentistry, Oral Pathology Unit, Federal University of Pernambuco, Recife, Pernambuco, Brazil
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Cury V, Moretti AIS, Assis L, Bossini P, Crusca JDS, Neto CB, Fangel R, de Souza HP, Hamblin MR, Parizotto NA. Low level laser therapy increases angiogenesis in a model of ischemic skin flap in rats mediated by VEGF, HIF-1α and MMP-2. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 125:164-70. [PMID: 23831843 DOI: 10.1016/j.jphotobiol.2013.06.004] [Citation(s) in RCA: 352] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 05/10/2013] [Accepted: 06/10/2013] [Indexed: 11/24/2022]
Abstract
It is known that low level laser therapy is able to improve skin flap viability by increasing angiogenesis. However, the mechanism for new blood vessel formation is not completely understood. Here, we investigated the effects of 660 nm and 780 nm lasers at fluences of 30 and 40 J/cm(2) on three important mediators activated during angiogenesis. Sixty male Wistar rats were used and randomly divided into five groups with twelve animals each. Groups were distributed as follows: skin flap surgery non-irradiated group as a control; skin flap surgery irradiated with 660 nm laser at a fluence of 30 or 40 J/cm(2) and skin flap surgery irradiated with 780 nm laser at a fluence of 30 or 40 J/cm(2). The random skin flap was performed measuring 10×4 cm, with a plastic sheet interposed between the flap and the donor site. Laser irradiation was performed on 24 points covering the flap and surrounding skin immediately after the surgery and for 7 consecutive days thereafter. Tissues were collected, and the number of vessels, angiogenesis markers (vascular endothelial growth factor, VEGF and hypoxia inducible factor, HIF-1α) and a tissue remodeling marker (matrix metalloproteinase, MMP-2) were analyzed. LLLT increased an angiogenesis, HIF-1α and VEGF expression and decrease MMP-2 activity. These phenomena were dependent on the fluences, and wavelengths used. In this study we showed that LLLT may improve the healing of skin flaps by enhancing the amount of new vessels formed in the tissue. Both 660 nm and 780 nm lasers were able to modulate VEGF secretion, MMP-2 activity and HIF-1α expression in a dose dependent manner.
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Affiliation(s)
- Vivian Cury
- Department of Physiotherapy, Federal University of São Carlos, São Carlos, São Paulo, Brazil
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Peplow PV, Baxter GD. Testing Infrared Laser Phototherapy (810 nm) to Ameliorate Diabetes: Irradiation on Body Parts of Diabetic Mice. Lasers Surg Med 2013; 45:240-5. [DOI: 10.1002/lsm.22130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2013] [Indexed: 12/24/2022]
Affiliation(s)
- Philip V. Peplow
- Department of Anatomy; University of Otago; Dunedin 9010 New Zealand
| | - G. David Baxter
- Centre for Physiotherapy Research, School of Physiotherapy, University of Otago; Dunedin 9010 New Zealand
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Khalaf MM, Hassan MA, Ibrahim ZM. Helium Neon laser therapy for post mastectomy lymphedema and shoulder mobility. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2013. [DOI: 10.1016/j.ejmhg.2012.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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