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Liu D, Luo X, Jing Y, Wu T, Chen F. The Application of PBM Therapy in Patients Subjected to Oral GVHD: A Review. Photobiomodul Photomed Laser Surg 2024; 42:439-448. [PMID: 38900719 DOI: 10.1089/pho.2023.0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024] Open
Abstract
Background: Oral graft-versus-host disease (GVHD) is characterized by mucosal lesions, salivary gland dysfunction etc., accompanied by pain and oral dysfunction. The efficacy of photobiomodulation (PBM) in managing pain and inflammation has been demonstrated. PBM has been applied in oral GVHD and is regarded as a potent adjunctive therapy. Objective: To review the application of PBM for oral GVHD and summarize its biological mechanisms and recommended parameters. Materials and Methods: The article provides an overview of the therapeutic effects of PBM in oral GVHD cases. It analyzes the biological mechanisms from different aspects and explores the potential prospects of PBM, and appropriate parameters and frequency for GVHD are recommended. Conclusions: The efficacy of PBM in oral GVHD has been demonstrated through symptom alleviation and function improvement. It is recommended as an adjuvant therapy for oral GVHD. However, further research is required to explore optimal devices, parameters, and potential complications associated with using PBM in oral GVHD.
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Affiliation(s)
- Dongqi Liu
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Chongqing, China
| | - Xiao Luo
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Chongqing, China
| | - Yin Jing
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Chongqing, China
| | - Tingting Wu
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Chongqing, China
| | - Fangchun Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering, Chongqing, China
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Meisgeier A, Heymann P, Ziebart T, Braun A, Neff A. Wound healing after therapy of oral potentially malignant disorders with a 445-nm semiconductor laser: a randomized clinical trial. Clin Oral Investig 2023; 28:26. [PMID: 38147181 PMCID: PMC10751250 DOI: 10.1007/s00784-023-05438-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/18/2023] [Indexed: 12/27/2023]
Abstract
OBJECTIVES Oral potentially malignant disorders (OPMDs) are the most clinically relevant precursor lesions of the oral squamous cell carcinoma (OSCC). OSCC is one of the 15 most common cancers worldwide. OSCC is with its high rate of mortality an important cause of death worldwide. The diagnosis and therapy of clinically relevant precursor lesions of the OSCC is one of the main parts of prevention of this malignant disease. Targeted therapy is one of the main challenges concerning an oncologically safe tissue removal without overwhelming functional and aesthetic impairment. MATERIALS AND METHODS In this randomized controlled trial, a newly introduced intraoral 445-nm semiconductor laser (2W; cw-mode; SIROLaser Blue, Dentsply Sirona, Bensheim, Germany) was used in the therapy of OPMDs. Duration and course of wound healing, pain, and scar tissue formation were compared to classical cold blade removal with primary suture by measuring remaining wound area, tissue colorimetry, and visual analogue scale. The study includes 40 patients randomized using a random spreadsheet sequence in two groups (n1 = 20; n2 = 20). RESULTS This comparative analysis revealed a significantly reduced remaining wound area after 1, 2, and 4 weeks in the laser group compared to the cold blade group (p < 0.05). In the laser group, a significantly reduced postoperative pain after 1 week was measured (p < 0.05). CONCLUSION Laser coagulation of OPMDs with the investigated 445-nm semiconductor laser is a safe, gentle, and predictable surgical procedure with beneficial wound healing and reduced postoperative discomfort. CLINICAL RELEVANCE Compared to the more invasive and bloody cold blade removal with scalpel, the 445-nm semiconductor laser could be a new functional less traumatic tool in the therapy of OPMDs. The method should be further investigated with regard to the identification of further possible indications. TRAIL REGISTRATION German Clinical Trials Register No: DRKS00032626.
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Affiliation(s)
- Axel Meisgeier
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, Giessen/Marburg, Germany.
- Faculty of Medicine, Philipps-University, Marburg, 35043, Marburg, Germany.
| | - Paul Heymann
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, Giessen/Marburg, Germany
- Faculty of Medicine, Philipps-University, Marburg, 35043, Marburg, Germany
| | - Thomas Ziebart
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, Giessen/Marburg, Germany
- Faculty of Medicine, Philipps-University, Marburg, 35043, Marburg, Germany
| | - Andreas Braun
- Department of Operative Dentistry, Periodontology and Preventive Dentistry, RWTH University Aachen, Aachen, Germany
| | - Andreas Neff
- Department of Oral and Craniomaxillofacial Surgery, UKGM GmbH, University Hospital Marburg, Giessen/Marburg, Germany
- Faculty of Medicine, Philipps-University, Marburg, 35043, Marburg, Germany
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Wang X, Liu J, Wang Z, Guo C, Lan H, Feng S, Liu H, Gao X, Zhang D, Zhu L, Jin H, Wang J. Unraveling the parameters and biological mechanisms of CO 2 laser therapy for acute pain relief. Front Neurol 2023; 14:1271655. [PMID: 37928139 PMCID: PMC10624176 DOI: 10.3389/fneur.2023.1271655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/09/2023] [Indexed: 11/07/2023] Open
Abstract
Acute pain-related pathology is a significant challenge in clinical practice, and the limitations of traditional pain-relief drugs have made it necessary to explore alternative approaches. Photobiomodulation (PBM) therapy using CO2 laser has emerged as a promising option. In this study, we aimed to identify the optimal parameters of CO2 laser irradiation for acute pain relief through in vivo and in vitro experiments. First, we validated the laser intensity used in this study through bone marrow mesenchymal stem cells (BMSCs) experiments to ensure it will not adversely affect stem cell viability and morphology. Then we conducted a detailed evaluation of the duty cycle and frequency of CO2 laser by the hot plate and formalin test. Results showed a duty cycle of 3% and a frequency of 25 kHz produced the best outcomes. Additionally, we investigated the potential mechanisms underlying the effects of CO2 laser by immunohistochemical staining, and found evidence to suggest that the opioid receptor may be involved in its analgesic effect. In conclusion, this study provides insights into the optimal parameters and underlying mechanisms of CO2 laser therapy for effective pain relief, thereby paving the way for future clinical applications.
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Affiliation(s)
- Xianggang Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Jiaqi Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Zhonghan Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Chunming Guo
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Hongjia Lan
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Shibin Feng
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Xun Gao
- School of Physics, Changchun University of Science and Technology, Changchun, China
| | - Dongming Zhang
- Academy of Chinese Medical Sciences of Jilin Province, Changchun, China
| | - Lintao Zhu
- Changchun Ideal Medical Technology Co., Ltd., Changchun, China
| | - Hui Jin
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China
- Orthopaedic Research Institute of Jilin Province, Changchun, China
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Bunch J. Photobiomodulation (Therapeutic Lasers): An Update and Review of Current Literature. Vet Clin North Am Small Anim Pract 2023; 53:783-799. [PMID: 36964028 DOI: 10.1016/j.cvsm.2023.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
Photobiomodulation therapy, also commonly known as laser therapy, continues to grow in popularity in veterinary medicine. It is the use of red and near-infrared light to simulate healing, relieve pain, and reduce inflammation. The potential variety of conditions for which it can be used as an adjunctive, non-invasive modality has propelled its use in both veterinary rehabilitation, sports medicine, and general practice. In the last decade, clinical research has grown with increasing evidence for efficacy for some conditions but mixed to limited in others and many conditions not represented.
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Affiliation(s)
- Jessica Bunch
- Integrative Veterinary Medicine and Rehabilitation, College of Veterinary Medicine, Washington State University, 205 Ott Road, Pullman, WA 99164-7060, USA.
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High-Intensity Laser Therapy for Musculoskeletal Disorders: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. J Clin Med 2023; 12:jcm12041479. [PMID: 36836014 PMCID: PMC9963402 DOI: 10.3390/jcm12041479] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/30/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
High-intensity laser therapy (HILT) is one of the therapeutic approaches used in the treatment of musculoskeletal disorders (MSD). The main objective of this study was to examine the effectiveness of HILT for reducing pain and improving functionality in people with MSD. Ten databases were systematically searched for randomized trials published up to 28 February 2022. Randomized clinical trials (RCTs) assessing the effectiveness of HILT on MSD were included. The main outcome measures were pain and functionality. In total, 48 RCTs were included in the qualitative synthesis and 44 RCTs in the quantitative analysis. HILT showed a decrease on the pain VAS (mean difference (MD) = -1.3 cm; confidence interval (CI) 95%: -1.6 to -1.0) and an improvement in functionality (standardized mean difference (SMD) = -1.0; CI95%: -1.4 to -0.7), with low and moderate quality of evidence, respectively. A greater effect was observed when compared with control than with other conservative treatments, both on pain (χ2 = 20.6; p < 0.001) and functionality (χ2 = 5.1; p = 0.02). Differences in the effectiveness of HILT were found depending on the location (χ2 = 40.1 p < 0.001), with further improved functionality in MSD of the knee and shoulder. HILT is an effective treatment for improving pain, functionality, range of motion, and quality of life in people with MSD, although these findings must be treated with caution due to the high risk of bias in the studies. Further clinical trials should be well designed to lower the risk of bias.
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Nie F, Hao S, Ji Y, Zhang Y, Sun H, Will M, Han W, Ding Y. Biphasic dose response in the anti-inflammation experiment of PBM. Lasers Med Sci 2023; 38:66. [PMID: 36749428 DOI: 10.1007/s10103-022-03664-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 10/22/2022] [Indexed: 02/08/2023]
Abstract
Non-invasive laser irradiation can induce photobiomodulation (PBM) effects in cells and tissues, which can help reduce inflammation and pain in several clinical scenarios. The purpose of this study is to review the current literature to verify whether PBM can produce dose effects in anti-inflammatory experiments by summarizing the clinical and experimental effects of different laser parameters of several diseases. The so-called Arndt-Schulz curve is often used to describe two-phase dose reactions, assuming small doses of therapeutic stimulation, medium doses of inhibition, and large doses of killing. In the past decade, more and more attention has been paid to the clinical application of PBM, especially in the field of anti-inflammation, because it represents a non-invasive strategy with few contraindications. Although there are different types of lasers available, their use is adjusted by different parameters. In general, the parameters involved are wavelength, energy density, power output, and radiation time. However, due to the biphasic effect, the scientific and medical communities remain puzzled by the ways in which the application of PBM must be modified depending on its clinical application. This article will discuss these parameter adjustments and will then also briefly introduce two controversial theories of the molecular and cellular mechanisms of PBM. A better understanding of the extent of dualistic dose response in low-intensity laser therapy is necessary to optimize clinical treatment. It also allows us to explore the most dependable mechanism for PBM use and, ultimately, standardize treatment for patients with various diseases.
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Affiliation(s)
- Fang Nie
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Shaolong Hao
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yu Ji
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yan Zhang
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Hao Sun
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Melissa Will
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Wei Han
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
| | - YuChuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
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Teng C, Egger S, Blinman PL, Vardy JL. Evaluating laser photobiomodulation for chemotherapy-induced peripheral neuropathy: a randomised phase II trial. Support Care Cancer 2023; 31:52. [PMID: 36526802 PMCID: PMC9758032 DOI: 10.1007/s00520-022-07463-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022]
Abstract
PURPOSE This study aims to evaluate the efficacy and safety of laser photobiomodulation (PBM) for treatment of established chemotherapy-induced peripheral neuropathy (CIPN) in cancer survivors. METHODS We conducted a randomised phase II, non-comparative, sham-controlled, single-blinded clinical trial in 44 cancer survivors reporting CIPN symptoms at least 3 months following completion of neurotoxic chemotherapy. Participants were randomised 2:1 to either PBM laser or sham control delivered twice weekly for 12 sessions. Assessments were conducted at baseline, the end of intervention (6 weeks), and 6 weeks post intervention (12 weeks). Participants completed neuropathy, quality of life and function questionnaires, and a clinical neurological assessment. The primary outcome was proportion of participants with CIPN response, defined as either symptom resolution or reduction of minimally clinically important difference. RESULTS In the laser and control groups, CIPN response rates were - 48% and 53% at 6 weeks and 45% and 33% at 12 weeks, respectively. The null hypothesis that the true response rate is 5% in the laser arm was rejected at both 6 and 12 weeks (p < 0.001 for both). Compared to baseline, patient-reported CIPN improved in both laser and control groups after the intervention. At 12 weeks, improvement was sustained in the laser group and approaching baseline in the control group. Clinical signs, quality of life, and function remained stable in both groups. Low-grade "side-effects" were observed in both arms. CONCLUSION PBM may offer clinically meaningful symptom benefit in cancer survivors with established CIPN with improvement potentially continuing beyond completion of the intervention. A larger study is warranted to evaluate this further.
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Affiliation(s)
- Christina Teng
- Concord Cancer Centre, Concord, NSW Australia ,Faculty of Medicine and Health, University of Sydney, Camperdown, NSW Australia ,Central Coast Cancer Centre, Gosford, NSW Australia
| | - Sam Egger
- The Daffodil Centre — a joint venture with Cancer Council NSW and the University of Sydney, Kings Cross, NSW Australia
| | - Prunella L. Blinman
- Concord Cancer Centre, Concord, NSW Australia ,Faculty of Medicine and Health, University of Sydney, Camperdown, NSW Australia
| | - Janette L. Vardy
- Concord Cancer Centre, Concord, NSW Australia ,Faculty of Medicine and Health, University of Sydney, Camperdown, NSW Australia
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Quero IB, Faraoni JJ, Corsini Fernandes AL, Reis Derceli JD, Palma-Dibb RG. Influence of diode laser treatment and casein phosphopeptide-amorphous calcium phosphate paste on eroded root dentin. J Conserv Dent 2022; 25:616-620. [PMID: 36591576 PMCID: PMC9795693 DOI: 10.4103/jcd.jcd_257_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/16/2022] [Accepted: 07/27/2022] [Indexed: 01/03/2023] Open
Abstract
Introduction It is still unclear whether the pretreatment for dentin hypersensitivity can interfere with the adhesive-dentin bonding strength. This study aimed to evaluate in vitro the effect of pretreatment with a casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) paste and diode laser on the shear bond strength of the etch-and-rinse adhesive system in the adhesive-dentin interface. Materials and Methods Seventy-five bovine root specimens were randomly divided into five experimental groups (n = 15). Samples were eroded by six cycles of immersion in hydrochloric acid solution (0.01M; pH = 1.2) for 20 s each, at 45 min intervals, and treated with: G2 - no treatment, G3 - CPP-ACP, G4 - diode laser (970 nm), and G5 - CPP-ACP + Diode laser. After treatments, the morphology of the specimens was analyzed. Results The fracture mode of each group was evaluated after restoration with composite resins in the treated area. Data were analyzed by the one-way ANOVA and Tukey's test (P < 0.05). G3 showed the highest values for shear bond strength; there was no significant difference among G1, G3, and G5 (P > 0.05). The adhesive fracture was predominant for all groups. Conclusion The use of desensitizers containing CPP-ACP, associated or not with a diode laser, increased the bond strength of the etch-and-rinse adhesive system on eroded root dentin.
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Affiliation(s)
- Isabela Barbosa Quero
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Juliana Jendiroba Faraoni
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Ana Luísa Corsini Fernandes
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Juliana Dos Reis Derceli
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Regina Guenka Palma-Dibb
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Zhang WW, Wang XY, Chu YX, Wang YQ. Light-emitting diode phototherapy: pain relief and underlying mechanisms. Lasers Med Sci 2022; 37:2343-2352. [DOI: 10.1007/s10103-022-03540-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/01/2022] [Indexed: 12/15/2022]
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Gonçalves MR, da Conceição MS, Jesus CHA, Gasparin AT, Rosa ES, da Cunha JM. Spinal cannabinoid CB1 or CB2 receptors activation attenuates mechanical allodynia in streptozotocin-induced diabetic rats. Behav Pharmacol 2022; 33:158-164. [PMID: 32804775 DOI: 10.1097/fbp.0000000000000580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Diabetes is a chronic disease associated with a high number of complications such as peripheral neuropathy, which causes sensorial disturbances and may lead to the development of diabetic neuropathic pain (DNP). The current treatment for DNP is just palliative and the drugs may cause severe adverse effects, leading to discontinuation of treatment. Thus, new therapeutic targets need to be urgently investigated. Studies have shown that cannabinoids have promising effects in the treatment of several pathological conditions, including chronic pain. Thus, we aimed to investigate the acute effect of the intrathecal injection of CB1 or CB2 cannabinoid receptor agonists N-(2-chloroethyl)-5Z, 8Z, 11Z, 14Z-eicosatetraenamide (ACEA) or JWH 133, respectively (10, 30 or 100 μg/rat) on the mechanical allodynia associated with experimental diabetes induced by streptozotocin (60 mg/kg; intraperitoneal) in rats. Cannabinoid receptor antagonists CB1 AM251 or CB2 AM630 (1 mg/kg) were given before treatment with respective agonists to confirm the involvement of cannabinoid CB1 or CB2 receptors. Rats with diabetes exhibited a significant reduction on the paw mechanical threshold 2 weeks after diabetes induction, having the maximum effect observed 4 weeks after the streptozotocin injection. This mechanical allodynia was significantly improved by intrathecal treatment with ACEA or JWH 133 (only at the higher dose of 100 μg). Pre-treatment with AM251 or AM630 significantly reverted the anti-allodynic effect of the ACEA or JWH 133, respectively. Considering the clinical challenge that the treatment of DPN represents, this study showed for the first time, that the intrathecal cannabinoid receptors agonists may represent an alternative for the treatment of DNP.
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Affiliation(s)
- Maryna Rodrigues Gonçalves
- Department of Pharmacology, Biological Science Sector, Federal University of Parana, Curitiba, Parana, Brazil
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Teixeira MA, Papini JZB, Garcez A, Tofoli GR. Comparative analysis of two laser wavelengths in the stimulation of acupuncture points for analgesic effects in an animal model. JOURNAL OF BIOPHOTONICS 2022; 15:e202100213. [PMID: 34658149 DOI: 10.1002/jbio.202100213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/17/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
This study compares the effectiveness of two laser wavelengths for stimulating acupoints in an experimental model of acute postoperative pain. Forty-five Wistar rats were randomly assigned to receive treatment on their left hind paw, contralateral to a surgical procedure. Laser treatments were performed with Green Laser-GL (532 nm, 70 mW and 7 J/cm2 of energy), Red Laser-RL (660 nm, 100 mW and 7 J/cm2 of energy), or with Laser Off-LO. After each application, the animals were evaluated with a Von Frey analgesiometer to check for painful sensitivity on their right (with surgery) and left (without surgery) hind paws. Neuropeptides and cytokine levels in the incision site tissue of the right paw were measured by ELISA after 1, 6 and 24 hours. It was possible to observe that, in this pain model, both lasers promoted analgesia and that the GL altered the levels of TNF-α and IL-1β.
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Affiliation(s)
| | | | - Aguinaldo Garcez
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Campinas, Brazil
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12
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Canever JB, Barbosa RI, Hendler KG, Neves LMSD, Kuriki HU, Júnior ASA, Fonseca MDCR, Marcolino AM. Effects of photobiomodulation on different application points and different phases of complex regional pain syndrome type I in the experimental model. Korean J Pain 2021; 34:250-261. [PMID: 34193632 PMCID: PMC8255157 DOI: 10.3344/kjp.2021.34.3.250] [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: 01/19/2021] [Revised: 04/17/2021] [Accepted: 04/17/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Complex regional pain syndrome type I (CRPS-I) consists of disorders caused by spontaneous pain or induced by some stimulus. The objective was to verify the effects of photobiomodulation (PBM) using 830 nm wavelength light at the affected paw and involved spinal cord segments during the warm or acute phase. METHODS Fifty-six mice were randomized into seven groups. Group (G) 1 was the placebo group; G2 and G3 were treated with PBM on the paw in the warm and acute phase, respectively; G4 and G5 treated with PBM on involved spinal cord segments in the warm and acute phase, respectively; G6 and G7 treated with PBM on paw and involved spinal cord segments in the warm and acute phase, respectively. Edema degree, thermal and mechanical hyperalgesia, skin temperature, and functional quality of gait (Sciatic Static Index [SSI] and Sciatic Functional Index [SFI]) were evaluated. RESULTS Edema was lower in G3 and G7, and these were the only groups to return to baseline values at the end of treatment. For thermal hyperalgesia only G3 and G5 returned to baseline values. Regarding mechanical hyperalgesia, the groups did not show significant differences. Thermography showed increased temperature in all groups on the seventh day. In SSI and SFI assessment, G3 and G7 showed lower values when compared to G1, respectively. CONCLUSIONS PBM irradiation in the acute phase and in the affected paw showed better results in reducing edema, thermal and mechanical hyperalgesia, and in improving gait quality, demonstrating efficacy in treatment of CRPS-I symptoms.
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Affiliation(s)
- Jaquelini Betta Canever
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
| | - Rafael Inácio Barbosa
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
- Postgraduate Program in Rehabilitation Sciences, Federal University of Santa Catarina, Araranguá, Brazil
| | - Ketlyn Germann Hendler
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
- Postgraduate Program in Rehabilitation Sciences, Federal University of Santa Catarina, Araranguá, Brazil
| | - Lais Mara Siqueira das Neves
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
- Postgraduate Program in Rehabilitation and Functional Performance of the Departament of Health Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil
| | - Heloyse Uliam Kuriki
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
- Postgraduate Program in Rehabilitation Sciences, Federal University of Santa Catarina, Araranguá, Brazil
| | | | - Marisa de Cassia Registro Fonseca
- Postgraduate Program in Rehabilitation and Functional Performance of the Departament of Health Sciences, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, Brazil
| | - Alexandre Márcio Marcolino
- Laboratory of Assesment and Rehabilitation of the Locomotor Apparatus, Department of Health Sciences, Center Araranguá, Federal University of Santa Catarina, Araranguá, Brazil
- Postgraduate Program in Rehabilitation Sciences, Federal University of Santa Catarina, Araranguá, Brazil
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Small A, Fisher AD, Lee C, Colditz I. Analgesia for Sheep in Commercial Production: Where to Next? Animals (Basel) 2021; 11:ani11041127. [PMID: 33920025 PMCID: PMC8070992 DOI: 10.3390/ani11041127] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Increasing societal and customer pressure to provide animals with ‘a life worth living’ continues to apply pressure on industry to alleviate pain associated with husbandry practices, injury and illness. Although a number of analgesic solutions are now available for sheep, providing some amelioration of the acute pain responses, this review has highlighted a number of potential areas for further research. Abstract Increasing societal and customer pressure to provide animals with ‘a life worth living’ continues to apply pressure on livestock production industries to alleviate pain associated with husbandry practices, injury and illness. Over the past 15–20 years, there has been considerable research effort to understand and develop mitigation strategies for painful husbandry procedures in sheep, leading to the successful launch of analgesic approaches specific to sheep in a number of countries. However, even with multi-modal approaches to analgesia, using both local anaesthetic and non-steroidal anti-inflammatory drugs (NSAID), pain is not obliterated, and the challenge of pain mitigation and phasing out of painful husbandry practices remains. It is timely to review and reflect on progress to date in order to strategically focus on the most important challenges, and the avenues which offer the greatest potential to be incorporated into industry practice in a process of continuous improvement. A structured, systematic literature search was carried out, incorporating peer-reviewed scientific literature in the period 2000–2019. An enormous volume of research is underway, testament to the fact that we have not solved the pain and analgesia challenge for any species, including our own. This review has highlighted a number of potential areas for further research.
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Affiliation(s)
- Alison Small
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
- Correspondence: ; Tel.: +61-2-6776-1435
| | - Andrew David Fisher
- Animal Welfare Science Centre, University of Melbourne, Parkville, VIC 3052, Australia;
| | - Caroline Lee
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
| | - Ian Colditz
- CSIRO Agriculture & Food, Locked Bag 1, Armidale, NSW 2350, Australia; (C.L.); (I.C.)
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Pocai BL, Provensi É, Serighelli F, Rigo G, Artioli DP, de Albuquerque CE, Bertolini GRF. Effect of photobiomodulation in the patellofemoral pain syndrome; randomized clinical trial in young women. J Bodyw Mov Ther 2021; 26:263-267. [PMID: 33992256 DOI: 10.1016/j.jbmt.2021.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/05/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE patellofemoral pain syndrome (PFPS) is one of the most frequent musculoskeletal disorders in the knee joint, affecting mainly physically active adolescents and young adults; its main symptom is pain. Physiotherapy has several therapeutic modalities aimed at pain relief, among which are photobiomodulation (PBM). The aim of the study was to analyze the effects of using PBM in cluster form (Laser + LED) in patients with PFPS. PATIENTS AND METHODS This study is characterized as quantitative, experimental, randomized, composed of 30 women with PFPS, randomized into two groups: Control Group (CG) and PBM Group (PBMG). Both groups underwent three evaluations: pre-intervention, post-intervention, and after one month of follow-up. Participants of the PBMG were presented to the application of the cluster device, three times a week, for four weeks. The intensity of spontaneous pain and movement were evaluated, knee function tests and function questionnaires. The results showed a reduction in pain only for the landing of the jump. As for the other variables there was no interaction of factors; the questionnaires used showed larger effect sizes for PBMG when compared to CG. It is possible to conclude that the use of PBM showed benefit in reducing pain at the time of landing of the jump and functional assessment questionnaires.
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Affiliation(s)
- Bruna Lehmkuhl Pocai
- Physiotherapy Academic of the Universidade Estadual Do Oeste Do Paraná (Unioeste), Brazil
| | - Érica Provensi
- Physiotherapy Academic of the Universidade Estadual Do Oeste Do Paraná (Unioeste), Brazil
| | - Fernanda Serighelli
- Physiotherapy Academic of the Universidade Estadual Do Oeste Do Paraná (Unioeste), Brazil
| | - Geórgia Rigo
- Physiotherapy Academic of the Universidade Estadual Do Oeste Do Paraná (Unioeste), Brazil
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Effects of photobiomodulation therapy on the local experimental envenoming by Bothrops leucurus snake. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 214:112087. [PMID: 33234463 DOI: 10.1016/j.jphotobiol.2020.112087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/10/2020] [Accepted: 11/17/2020] [Indexed: 02/03/2023]
Abstract
Bothrops leucurus is the major causative agent of snakebites in Brazil's Northeast. The systemic effects of its venom are effectively neutralized by antivenom therapy, preventing bitten patients' death. However, antivenom fails in neutralizing local effects that include intense pain, edema, bleeding, and myonecrosis. Such effects can lead to irreversible sequels, representing a clinically relevant issue for which there is no current effective treatment. Herein, the effects of photobiomodulation therapy (PBMT) were tested in the local actions induced by B. leucurus venom (BLV) in mice (n = 123 animals in 20 experimental groups). A continuous emission AlGaAs semiconductor diode laser was used in two wavelengths (660 or 780 nm). Mechanical nociceptive thresholds were assessed with the electronic von Frey apparatus. Local edema was determined by measuring the increase in paw thickness. Hemorrhage was quantified by digital measurement of the bleeding area. Myotoxicity was evaluated by serum creatine kinase (CK) activity and histopathological analysis. PBMT promoted anti-hypernociception in BLV-injected mice; irradiation with the 660 nm laser resulted in faster effect onset than the 780 nm laser. Both laser protocols reduced paw edema formation, whether irradiation was performed immediately or half an hour after venom injection. BLV-induced hemorrhage was not altered by PBMT. Laser irradiation delayed, but did not prevent myotoxicity caused by BLV, as shown by a late increase in CK activity and histopathological alterations. PBMT was effective in the control of some of the major local effects of BLV refractory to antivenom. It is a potential complementary therapy that could be used in bothropic envenoming, minimizing the morbidity of these snakebite accidents.
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de Oliveira ME, Da Silva JT, Brioschi ML, Chacur M. Effects of photobiomodulation therapy on neuropathic pain in rats: evaluation of nociceptive mediators and infrared thermography. Lasers Med Sci 2020; 36:1461-1467. [PMID: 33155161 DOI: 10.1007/s10103-020-03187-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/03/2020] [Indexed: 11/26/2022]
Abstract
Nerve injury induces release of peptides and upregulation of receptors such as substance P and transient receptor potential receptor V1 (TRPV1), which contribute to the development and maintenance of chronic pain. Photobiomodulation therapy (PBMT) is a nonpharmacological strategy that promotes tissue repair and reduces pain and inflammation. However, the molecular basis for PBMT effects on neuropathic pain is still unclear. We investigated the effects of PBMT on substance P, TRPV1, and superficial temperature change in a rodent model of neuropathic pain. We evaluated substance P and TRPV1 in dorsal root ganglia (DRG L4 to L6) at baseline, 14 days after chronic constriction injury (CCI) and after PBMT. We also assessed the superficial temperature of tarsal, metatarsal, tibia, and fibula regions before and after PBMT using infrared thermography. Substance P and TRPV1 levels increased in DRG of CCI rats compared to naive and sham rats and decreased after PBMT. Infrared thermography showed increased temperature of tarsal, metatarsal, tibia, and fibula regions in CCI rats, which was decreased after PBMT. There were no statistical differences between CCI rats with PBMT, sham, and naive rats in any assay. PBMT reduces nociceptive mediators and hind paw and leg's temperature in a rodent model of neuropathic pain, suggesting that PBMT may play a modulatory role in thermoregulation, neurogenic inflammation, and thermal sensitivity in peripheral nerve injuries. Therefore, PBMT appears to be a valuable strategy for neuropathic pain treatment in clinical settings.
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Affiliation(s)
- Mara Evany de Oliveira
- Laboratório de Neuroanatomia Funcional da dor, Departamento de Anatomia, Instituto de Ciências Biomedicas, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2415, São Paulo, SP, 05508-900, Brazil
| | - Joyce Teixeira Da Silva
- Department of Neural and Pain Sciences, University of Maryland Baltimore, Baltimore, MD, USA
- Department of Psychiatry, Johns Hopkins University, Baltimore, MD, USA
| | - Marcos Leal Brioschi
- Divisao de Neurologia, Hospital das Clinicas, Escola de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Marucia Chacur
- Laboratório de Neuroanatomia Funcional da dor, Departamento de Anatomia, Instituto de Ciências Biomedicas, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2415, São Paulo, SP, 05508-900, Brazil.
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Xiang A, Liu H, Qu X, Liu S, Shen X. Approach Behavior Induced by 10.6-μm Laser Stimulation at Acupoint ST36 in a Rat Model of Incisional Pain. Photobiomodul Photomed Laser Surg 2020; 38:385-391. [DOI: 10.1089/photob.2019.4762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Anfeng Xiang
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hui Liu
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoyi Qu
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Sheng Liu
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xueyong Shen
- School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Pigatto GR, Quinteiro MH, Nunes‐de‐Souza RL, Coimbra NC, Parizotto NA. Low‐Intensity Photobiomodulation Decreases Neuropathic Pain in Paw Ischemia‐Reperfusion and Spared Nervus Ischiadicus Injury Experimental Models. Pain Pract 2020; 20:371-386. [DOI: 10.1111/papr.12862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/14/2019] [Accepted: 11/25/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Glauce R. Pigatto
- Laboratory of Regenerative Medicine University of Araraquara (UNIARA) Araraquara Brazil
| | - Maiara H.S. Quinteiro
- Laboratory of Regenerative Medicine University of Araraquara (UNIARA) Araraquara Brazil
| | - Ricardo L. Nunes‐de‐Souza
- Laboratory of Neuropsychopharmacology School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Norberto C. Coimbra
- Laboratory of Neuroanatomy & Neuropsychobiology Department of Pharmacology Ribeirão Preto Medical School of the University of São Paulo (FMRP‐USP) Ribeirão Preto Brazil
| | - Nivaldo A. Parizotto
- Laboratory of Regenerative Medicine University of Araraquara (UNIARA) Araraquara Brazil
- Department of Physical Therapy Federal University of São Carlos (UFSCar) São Carlos Brazil
- Biomedical Engineering Program University of Brasil (UNIBRASIL) São Paulo Brazil
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Abstract
This paper is the fortieth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2017 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, CUNY, 65-30 Kissena Blvd., Flushing, NY, 11367, United States.
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Vieira WF, de Magalhães SF, Farias FH, de Thomaz AA, Parada CA. Raman spectroscopy of dorsal root ganglia from streptozotocin-induced diabetic neuropathic rats submitted to photobiomodulation therapy. JOURNAL OF BIOPHOTONICS 2019; 12:e201900135. [PMID: 31265175 DOI: 10.1002/jbio.201900135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/29/2019] [Accepted: 07/01/2019] [Indexed: 06/09/2023]
Abstract
In this study, we used Raman spectroscopy as a new tool to investigate pathological conditions at the level of chemical bond alterations in biological tissues. Currently, there have been no reports on the spectroscopic alterations caused by diabetic neuropathy in the dorsal root ganglia (DRG). DRG are a target for the treatment of neuropathic pain, and the need for more effective therapies is increasing. Photobiomodulation therapy (PBMT) through infrared low-level laser irradiation (904 nm) has shown analgesic effects on the treatment of neuropathy. Thus, the aim of this study was to use Raman spectroscopy to characterize the spectral DRG identities of streptozotocin (STZ)-induced diabetic neuropathic (hyperalgesic) rats and to study the influence of PBMT over such spectra. Characteristic DRG peaks were identified at 2704, 2850, 2885, 2940, 3061 and 3160 cm-1 , whose assignments are CH2 /CH3 symmetric/asymmetric stretches, and C─H vibrations of lipids and proteins. DRG from hyperalgesic rats showed an increased normalized intensity of 2704, 2850, 2885 and 3160 cm-1 . These same peaks had their normalized intensity reduced after PBMT treatment, accompanied by an anti-hyperalgesic effect. Raman spectroscopy was able to diagnose spectral alterations in DRG of hyperalgesic rats and the PBMT reduced the intensity of hyperalgesia and the altered Raman spectra.
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Affiliation(s)
- Willians F Vieira
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Silviane F de Magalhães
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Felipe H Farias
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - André A de Thomaz
- Department of Quantum Electronics, Institute of Physics Gleb Wataghin, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Carlos A Parada
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
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Flaherty MJ. Rehabilitation Therapy in Perioperative Pain Management. Vet Clin North Am Small Anim Pract 2019; 49:1143-1156. [PMID: 31473030 DOI: 10.1016/j.cvsm.2019.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Physical agent modalities can be effective in the perioperative period for controlling pain and inflammation. This article presents research-based evidence to support the use of these modalities in pain management and to reduce the use of pain medications, including opioids. The mechanism of action, applications, contraindications, and adverse effects of cryotherapy, pulsed electromagnetic field therapy, transcutaneous electrical nerve stimulation, and laser therapy are reviewed. Incorporation of 1 or more of these therapies in anesthesia pain management protocols can improve outcomes and reduce potential drug side effects.
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Affiliation(s)
- Molly J Flaherty
- Department of Clinical Science, Ryan Veterinary Hospital of the University of Pennsylvania, 3900 Delancey Street, Philadelphia, PA 19104, USA.
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Cannabidiol attenuates mechanical allodynia in streptozotocin-induced diabetic rats via serotonergic system activation through 5-HT1A receptors. Brain Res 2019; 1715:156-164. [DOI: 10.1016/j.brainres.2019.03.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 02/05/2019] [Accepted: 03/16/2019] [Indexed: 12/30/2022]
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Vasconcelos AB, Nampo FK, Molina JC, Silva MB, Oliveira AS, de Angelis TR, Hasuda AL, Camargo EA, Ramos SP. Modulation of exercise-induced muscular damage and hyperalgesia by different 630 nm doses of light-emitting diode therapy (LEDT) in rats. Lasers Med Sci 2018; 34:749-758. [PMID: 30328526 DOI: 10.1007/s10103-018-2655-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 09/30/2018] [Indexed: 11/29/2022]
Abstract
We compared the acute effects of different doses of 630 nm light-emitting diode therapy (LEDT) on skeletal muscle inflammation and hyperalgesia in rats submitted to exercise-induced muscle damage (EIMD). Wistar rats were divided into five experimental groups (n = 5-8/group): sedentary control (CON); exercise + passive recovery (PR); and exercise + LEDT (1.2 J/cm2, 1.8 J; 4.2 J/cm2, 6.3 J; 10.0 J/cm2, 15 J). After 100 min of swimming, the rats in the LEDT groups were exposed to phototherapy on the triceps surae muscle. For mechanical hyperalgesia evaluation, paw withdrawal threshold was assessed before and 24 h after swimming. Immediately after hyperalgesia tests, blood samples were collected to analyze creatine kinase (CK) activity and the soleus muscle was removed for histological and tumor necrosis factor (TNF)-α immunohistological analyses. In all LEDT groups, plasma CK activity was reduced to levels similar to those measured in the CON group. Paw withdrawal threshold decreased in the PR group (- 11.9 ± 1.9 g) when compared to the CON group (2.2 ± 1.5 g; p < 0.01) and it was attenuated in the group LEDT 4.2 J/cm2 (- 3.3 ± 2.4 g, p < 0.05). Less leukocyte infiltration and edema and fewer necrotic areas were found in histological sections of soleus muscle in LEDT (4.2 J/cm2) and LEDT (10.0 J/cm2) groups compared to the PR group. Also, LEDT (4.2 J/cm2) and LEDT (10.0 J/cm2) groups showed less immunostaining for TNF-α in macrophages or areas with necrosis of muscle fibers compared to the PR group. LEDT (4.2 J/cm2, 6.3 J)-reduced muscle inflammation and nociception in animals submitted to EIMD.
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Affiliation(s)
- Alan B Vasconcelos
- Department of Physiology, Federal University of Sergipe, Marechal Rondon Av., São Cristóvão, SE, CEP 49100-000, Brazil
| | - Fernando K Nampo
- Latin American Institute of Life and Natural Sciences, Federal University of Latin American Integration, Foz do Iguaçu, PR, Brazil
| | - Júlio C Molina
- Department of Histology, State University of Londrina, Londrina, PR, Brazil
| | - Miriam B Silva
- Department of Physiology, Federal University of Sergipe, Marechal Rondon Av., São Cristóvão, SE, CEP 49100-000, Brazil
| | - Alan S Oliveira
- Department of Physiology, Federal University of Sergipe, Marechal Rondon Av., São Cristóvão, SE, CEP 49100-000, Brazil
| | | | - Amanda L Hasuda
- Department of Histology, State University of Londrina, Londrina, PR, Brazil
| | - Enilton A Camargo
- Department of Physiology, Federal University of Sergipe, Marechal Rondon Av., São Cristóvão, SE, CEP 49100-000, Brazil.
| | - Solange P Ramos
- Department of Histology, State University of Londrina, Londrina, PR, Brazil
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Shanks S, Leisman G. Perspective on Broad-Acting Clinical Physiological Effects of Photobiomodulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1096:41-52. [PMID: 29572678 DOI: 10.1007/5584_2018_188] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Research into photobiomodulation reveals beneficial effects of light therapy for a rapidly expanding list of medical conditions and illnesses. Although it has become more widely accepted by the mainstream medicine, the effects and mechanisms of action appear to be poorly understood. The therapeutic benefits of photobiomodulation using low-energy red lasers extend far beyond superficial applications, with a well-described physics allowing an understanding of how red lasers of certain optimum intensities may cross the cranium. We now have a model for explaining potential therapeusis for applications in functional neurology that include stroke, traumatic brain injury, and neurodegenerative conditions in addition to the currently approved functions in lipolysis, in onychomycosis treatment, and in pain management.
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Affiliation(s)
| | - Gerry Leisman
- Faculty of Health Sciences, University of Haifa, Haifa, Israel. .,National Institute for Brain & Rehabilitation Sciences, Nazareth, Israel.
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