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Morgan RM, Wheeler TD, Poolman MA, Haugen ENJ, LeMire SD, Fitzgerald JS. Effects of Photobiomodulation on Pain and Return to Play of Injured Athletes: A Systematic Review and Meta-analysis. J Strength Cond Res 2024; 38:e310-e319. [PMID: 38781474 DOI: 10.1519/jsc.0000000000004752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
ABSTRACT Morgan, RM, Wheeler, TD, Poolman, MA, Haugen, ENJ, LeMire, SD, and Fitzgerald, JS. Effects of photobiomodulation on pain and return to play of injured athletes: A systematic review and meta-analysis. J Strength Cond Res 38(6): e310-e319, 2024-The aims of this systematic review and meta-analysis were to evaluate the effect of photobiomodulation (PBM) on musculoskeletal pain in injured athletes and to determine if the effects of PBM allowed injured athletes to return to play faster. Electronic databases (MEDLINE Complete, CINAHL, and SPORTDiscus, PubMed, Web of Science, and Embase) were systematically searched (up to and including November 7, 2023) for peer-reviewed randomized controlled trials (RCTs) meeting criteria. Six RCTs, representing 205 competitive and recreational athletes with a mean age of 24 years, were included in the analysis. There were 6 intervention groups using standard physical therapy (n = 1), placebo PBM (n = 4), and aloe gel (n = 1) lasting between 10 minutes and 8 weeks in duration. The level of significance set for the study was p < 0.05. Overall, the use of PBM indicated a positive effect on pain reduction for PBM vs. control groups, standardized mean differences = 1.03, SE = 0.22, 95% confidence intervals = [0.43-1.63], p = 0.0089, but the 2 RCTs found evaluating the effect of PBM on time to return to play after injury in athletes do not support a benefit. Allied healthcare professionals may use PBM to reduce pain, thus allowing an athlete to return to their normal biomechanical movement faster; however, limited evidence suggests that PBM does not reduce time to return to play after an injury.
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Affiliation(s)
- Richard M Morgan
- Department of Physical Therapy, University of North Dakota, Grand Forks, North Dakota
| | - Tyler D Wheeler
- Department of Athletic Training, Training HAUS, Eagan, Minnesota
| | - Mark A Poolman
- Department of Sports Medicine, University of North Dakota, Grand Forks, North Dakota
| | - Erin N J Haugen
- Department of Clinical and Sport Psychology, Assessment and Therapy Associates of Grand Forks, PLLC, Grand Forks, North Dakota
| | - Steven D LeMire
- Department of Educational Foundations and Research, University of North Dakota, Grand Forks, North Dakota; and
| | - John S Fitzgerald
- Department of Education, Health and Behavior Studies, University of North Dakota, Grand Forks, North Dakota
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Hu J, Dong X, Lv Y, Hu D, Fei D, Dong H, Liu B, Li H, Yin H. Biphasic photobiomodulation of inflammation in mouse models of common wounds, infected wounds, and diabetic wounds. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 252:112868. [PMID: 38387147 DOI: 10.1016/j.jphotobiol.2024.112868] [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: 12/01/2023] [Revised: 01/30/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
Bidirectional photobiomodulation (PBM) therapy is an active research area. However, most studies have focused on its dependence on optical parameters rather than on its tissue-dependent effects. We constructed mouse models of wounds in three inflammatory states (normal, low, and high levels of inflammations) to assess the bidirectional regulatory effect of PBM on inflammation. Mice were divided into three groups to prepare common wounds, diabetic wounds, and bacteria-infected wounds. The same PBM protocol was used to regularly irradiate the wounds over a 14 d period. PBM promoted healing of all three kinds of wounds, but the inflammatory manifestations in each were significantly different. In common wounds, PBM slightly increased the aggregation of inflammatory cells and expression of IL-6 but had no effect on the inflammatory score. For wounds in a high level of inflammation caused by infection, PBM significantly increased TNF-α expression in the first 3 d of treatment but quickly eliminated inflammation after the acute phase. For the diabetic wounds in a low level of inflammation, PBM intervention significantly increased inflammation scores and prevented neutrophils from falling below baseline levels at the end of the 14 d observation period. Under fixed optical conditions, PBM has a bidirectional (pro- or anti-inflammatory) effect on inflammation, depending on the immune state of the target organism and the presence of inflammatory stimulants. Our results provide a basis for the formulation of clinical guidelines for PBM application.
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Affiliation(s)
- Jiashen Hu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xiaoxi Dong
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Yue Lv
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Dian Hu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Duheng Fei
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Huajiang Dong
- Logistics University of People's Armed Police Force, Tianjin 300309, China
| | - Bin Liu
- Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin 300162, China.
| | - Hongxiao Li
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China.
| | - Huijuan Yin
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China.
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de Brito Sousa K, Dos Santos Malavazzi TC, Rodrigues MFSD, Silva T, Andreo L, Deana AM, Nunes FD, Bussadori SK, Mesquita-Ferrari RA, Fernandes KPS. Effects of amber LED on inflammatory and regulatory monocytes and lymphocytes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 251:112848. [PMID: 38266361 DOI: 10.1016/j.jphotobiol.2024.112848] [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: 09/12/2023] [Revised: 12/28/2023] [Accepted: 01/16/2024] [Indexed: 01/26/2024]
Abstract
The primary objective of the present study was to assess the impact of amber LED photobiomodulation (PBM) on human monocytes and lymphocytes that were polarized into proinflammatory and regulatory/reparative phenotypes. Human leukocytes were polarized with LPS or LPS + IL-4 for 2 h and irradiated after 2 and 6 h with amber LED (590 nm). Cell absorbance spectrum and gene and protein expression of IL-1β, IL-6, IL-10, IL-17, TNF-α and IFNγ determined after 24 h. The results showed that irradiation did not significantly alter absorbance of non-polarized monocytes, whereas irradiated polarized monocytes presented reduction in absorbance in 625-850 nm region. Irradiated monocytes polarized with LPS + IL-4 presented reduction in absorbance in 600-725 nm region compared to non-irradiated group. Irradiated non-polarized lymphocytes presented absorbance peaks between 650 and 820 nm not seen in non-irradiated group. No difference was found in absorbance pattern of polarized lymphocytes after irradiation. Irradiation led to reduction in protein synthesis of IL-6 and TNFα in monocytes polarized to proinflammatory phenotype and increase in production of IL-17 in lymphocytes. Irradiation reduced production of IL-10 in monocytes and lymphocytes polarized to immunoregulatory phenotype. In conclusion, amber LED modulates light absorbance and expression of important cytokines in inflammatory/repair processes in monocytes and lymphocytes.
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Affiliation(s)
- Kaline de Brito Sousa
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil
| | - Tainá Caroline Dos Santos Malavazzi
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil
| | | | - Tamiris Silva
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil
| | - Lucas Andreo
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil
| | - Alessandro Melo Deana
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil
| | - Fabio Daumas Nunes
- Department of Stomatology, Discipline of Oral and Maxillofacial Pathology, School of Dentistry, University of São Paulo (FOUSP), São Paulo, SP 05508-000 Brazil
| | - Sandra Kalil Bussadori
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil; Postgraduate Program in Rehabilitation Sciences, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, Sao Paulo, SP 01504-001, Brazil
| | - Raquel Agnelli Mesquita-Ferrari
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil; Postgraduate Program in Rehabilitation Sciences, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, Sao Paulo, SP 01504-001, Brazil
| | - Kristianne Porta Santos Fernandes
- Postgraduate Program in Medicine-Biophotonics, Nove de Julho University (UNINOVE), 235/249 Vergueiro Street, Liberdade, São Paulo, SP 01504-001, Brazil.
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Goo H, Lee YJ, Lee S, Hong N. The Anti-Inflammatory Effect of Multi-Wavelength Light-Emitting Diode Irradiation Attenuates Dry Eye Symptoms in a Scopolamine-Induced Mouse Model of Dry Eye. Int J Mol Sci 2023; 24:17493. [PMID: 38139321 PMCID: PMC10744116 DOI: 10.3390/ijms242417493] [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: 10/10/2023] [Revised: 11/28/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Dry eye disease is a common condition in patients of all ages, causing discomfort and potential visual problems. Current treatments, including artificial tears and anti-inflammatory drugs, have certain limitations, encouraging research into alternative therapies. We investigated the therapeutic potential of multi-wavelength light-emitting diode (LED) irradiation of mice with dry eye. First, we showed that multi-wavelength LED irradiation was non-toxic to human corneal epithelial cells and improved cell viability. We then used a scopolamine-induced mouse model of dry eye to assess the effects of multi-wavelength LED irradiation on various clinical parameters. This treatment increased the tear volume and reduced corneal irregularity, thus improving dry eye. Histological analysis revealed that multi-wavelength LED irradiation protected against corneal epithelial damage and the associated reduction in epithelial thickness and would thus improve the corneal health of dry eye patients. Multi-wavelength LED irradiation significantly reduced the corneal levels of pro-inflammatory cytokines IL-6, IL-1β, and TNF-α; the treatment was thus anti-inflammatory. Our results suggest that multi-wavelength LED irradiation may serve as a safe and effective treatment for dry eye, alleviating symptoms, reducing inflammation, and promoting corneal health.
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Affiliation(s)
- Hyeyoon Goo
- Department of Medical Laser, Graduate School of Medicine, Dankook University, Cheonan 31116, Republic of Korea;
- Beckman Laser Institute Korea, Dankook University, Cheonan 31116, Republic of Korea;
| | - Yea-Jin Lee
- Beckman Laser Institute Korea, Dankook University, Cheonan 31116, Republic of Korea;
| | - Sangkeun Lee
- MEDI-IOT Co., Ltd., Seoul 02708, Republic of Korea;
| | - Namgue Hong
- Beckman Laser Institute Korea, Dankook University, Cheonan 31116, Republic of Korea;
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Tian T, Wang Z, Chen L, Xu W, Wu B. Photobiomodulation activates undifferentiated macrophages and promotes M1/M2 macrophage polarization via PI3K/AKT/mTOR signaling pathway. Lasers Med Sci 2023; 38:86. [PMID: 36932298 DOI: 10.1007/s10103-023-03753-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 03/13/2023] [Indexed: 03/19/2023]
Abstract
Macrophages are the main mediators of the inflammatory response and play a major role in the onset and maintenance of periodontitis. Studies revealed that photobiomodulation (PBM) can change the polarization state of macrophages and inflammation reduction, although the cellular mechanisms are not fully elucidated. Here, the present study explored the effect of PBM (980 nm) on undifferentiated and M1-type macrophages and the underlying mechanism. RAW264.7 cells were exposed to laser irradiation under different laser parameters (0.5, 5.0, and 10.0 J/cm2) with or without LY294002 (an inhibitor of PI3K pathway). Then, confocal laser microscopy was used to observe cell differentiation; qPCR was performed to examine the gene expression and western blotting was used to detect the protein in the PI3K/AKT/mTOR pathway and activated macrophage markers. The obtained results revealed that 980 nm PBM increased the mRNA expression of iNOS, Il-10, Arg1, and Il-12 along with the inflammatory cytokines Tnfα, IL-1β, and Il-6 in M0-type macrophages in dose-dependent manner. More interestingly, PBM at 5 J/cm2 decreased the mRNA expression of iNOS, Il-12, Tnfα, IL-1β, and Il-6 and increased the expression of Arg1 and Il-10 by M1-type macrophages, along with the elevated expression of phosphorylation of AKT and mTOR. Moreover, PBM-induced M1-type macrophage polarization was significantly attenuated via LY294002 treatment. These suggest that 980 nm PBM could activate M0-type macrophages and increase M2/M1 ratio via the PI3K/AKT/mTOR pathway.
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Affiliation(s)
- Tian Tian
- Department of Endodontics, Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, 143 Dongzong Road, Pingshan District, Shenzhen, 518118, China
| | - Ziting Wang
- Department of pediatric dentistry, Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, 143 Dongzong Road, Pingshan District, Shenzhen, 518118, China
| | - Leyi Chen
- Department of Endodontics, Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, 143 Dongzong Road, Pingshan District, Shenzhen, 518118, China
- School of Stomatology, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, China
| | - Wenan Xu
- Department of pediatric dentistry, Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, 143 Dongzong Road, Pingshan District, Shenzhen, 518118, China.
- School of Stomatology, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, China.
| | - Buling Wu
- Department of Endodontics, Shenzhen Stomatology Hospital (Pingshan), Southern Medical University, 143 Dongzong Road, Pingshan District, Shenzhen, 518118, China.
- School of Stomatology, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, 510515, China.
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Greben AI, Eremin PS, Kostromina EY, Markov PA, Greben TN, Gilmutdinova IR, Konchugova TV. [Low level laser therapy: molecular mechanisms of anti-inflammatory and regenerative effects]. VOPROSY KURORTOLOGII, FIZIOTERAPII, I LECHEBNOI FIZICHESKOI KULTURY 2023; 100:61-68. [PMID: 37141524 DOI: 10.17116/kurort202310002161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Laser therapy as a physiotherapeutic method has been successfully used for a long time in the treatment of various pathologies, but the action mechanisms of low level laser therapy (LLLT) remain understudied. OBJECTIVE To perform the analysis of published results of LLLT investigations, to describe the physical principles of photobiomodulation, its action mechanisms on various cells and tissues, therapeutic intervention and efficiency of the technique. MATERIAL AND METHODS The search of articles was done for the period from 2014 to 2022. The preference was given to the articles for the last 5 years in the PubMed database depending on keywords: low level laser therapy, photobiomodulation, exosomes, monocytes, macrophages. RESULTS AND DISCUSSION This article represents the current conceptions about the action mechanisms and reproduced effects of low level laser therapy, the photobiomodulation influence on the inflammation and reparative processes in human body by intervention on cells and their signal pathways. The discussion of research results and probable causes of conflicting data are performed, as well as the efficacy assessment of laser irradiation in different conditions and diseases is made. CONCLUSION Laser therapy has certain variety of advantages, among which: non-invasiveness and availability, long-term service of equipment, stable intensity of light radiation and the ability to use in various wavelength ranges. The technique efficacy was proven for a large number of diseases. However, for the successful application of photobiomodulation in clinical practice in current evidence-based medicine, additional investigations are necessary to determine the best dosimetric radiation parameters, as well as further study of action mechanisms on various human cells and tissues.
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Affiliation(s)
- A I Greben
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
- N.I. Pirogov Russian National Research Medical University, Moscow, Russia
| | - P S Eremin
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
| | - E Yu Kostromina
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
| | - P A Markov
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
| | - T N Greben
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
| | - I R Gilmutdinova
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
| | - T V Konchugova
- National Medical Research Center for Rehabilitation and Balneology, Moscow, Russia
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Hepburn J, Williams-Lockhart S, Bensadoun RJ, Hanna R. A Novel Approach of Combining Methylene Blue Photodynamic Inactivation, Photobiomodulation and Oral Ingested Methylene Blue in COVID-19 Management: A Pilot Clinical Study with 12-Month Follow-Up. Antioxidants (Basel) 2022; 11:2211. [PMID: 36358582 PMCID: PMC9686966 DOI: 10.3390/antiox11112211] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 08/26/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 virus was first recognized in late 2019 and remains a significant threat. We therefore assessed the use of local methylene blue photodynamic viral inactivation (MB-PDI) in the oral and nasal cavities, in combination with the systemic anti-viral, anti-inflammatory and antioxidant actions of orally ingested methylene blue (MB) and photobiomodulation (PBM) for COVID-19 disease. The proposed protocol leverages the separate and combined effects of MB and 660nm red light emitted diode (LED) to comprehensively address the pathophysiological sequelae of COVID-19. A total of eight pilot subjects with COVID-19 disease were treated in the Bahamas over the period June 2021-August 2021, using a remote care program that was developed for this purpose. Although not a pre-requisite for inclusion, none of the subjects had received any COVID-19 vaccination prior to commencing the study. Clinical outcome assessment tools included serial cycle threshold measurements as a surrogate estimate of viral load; serial online questionnaires to document symptom response and adverse effects; and a one-year follow-up survey to assess long-term outcomes. All subjects received MB-PDI to target the main sites of viral entry in the nose and mouth. This was the central component of the treatment protocol with the addition of orally ingested MB and/or PBM based on clinical requirements. The mucosal surfaces were irradiated with 660 nm LED in a continuous emission mode at energy density of 49 J/cm2 for PDI and 4.9 J/cm2 for PBM. Although our pilot subjects had significant co-morbidities, extremely high viral loads and moderately severe symptoms during the Delta phase of the pandemic, the response to treatment was highly encouraging. Rapid reductions in viral loads were observed and negative PCR tests were documented within a median of 4 days. These laboratory findings occurred in parallel with significant clinical improvement, mostly within 12-24 h of commencing the treatment protocol. There were no significant adverse effects and none of the subjects who completed the protocol required in-patient hospitalization. The outcomes were similarly encouraging at one-year follow-up with virtual absence of "long COVID" symptoms or of COVID-19 re-infection. Our results indicate that the protocols may be a safe and promising approach to challenging COVID-19 disease. Moreover, due its broad spectrum of activity, this approach has the potential to address the prevailing and future COVID-19 variants and other infections transmitted via the upper respiratory tract. Extensive studies with a large cohort are warranted to validate our results.
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Affiliation(s)
- Juliette Hepburn
- Luminnova Health, 34 Harbour Bay Plaza, East Bay Street, Nassau P.O. Box N-1081, Bahamas
| | | | - René Jean Bensadoun
- Centre De Haute Energie, Department of Oncology Radiology, 10 Boulevard Pasteur, 06000 Nice, France
| | - Reem Hanna
- Department of Surgical Sciences and Integrated Diagnostics, Laser Therapy Centre, University of Genoa, Vaile Benedetto XV, 6, 16132 Genoa, Italy
- Department of Restorative Dental Sciences, UCL-Eastman Dental Institute, Faculty of Medical Sciences, Rockefeller Building, London WC1E 6DE, UK
- Department of Oral Surgery, King’s College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK
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Austin E, Huang A, Wang JY, Cohen M, Heilman E, Maverakis E, Michl J, Jagdeo J. Red Light Phototherapy Using Light-Emitting Diodes Inhibits Melanoma Proliferation and Alters Tumor Microenvironments. Front Oncol 2022; 12:928484. [PMID: 35847848 PMCID: PMC9278815 DOI: 10.3389/fonc.2022.928484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/25/2022] [Indexed: 01/26/2023] Open
Abstract
Background Total annual cancer rates have decreased due to improved treatment and prevention. However, the incidence of melanoma is rising, and not all patients respond to immune and targeted approaches. Therefore, we sought to determine the efficacy of red light (RL) phototherapy in preclinical models of melanoma. Methods Melanoma cells (A375, B16F10, MNT-1) were irradiated with RL. Melanoma proliferation, apoptosis, oxidative stress, and p53 phosphorylation were measured in vitro. In C57BL/6 mice, phototherapy safety, B16F10 tumor growth, and immunocyte infiltration were assessed following RL. Results In vitro, 640 J/cm2 RL decreased cellular proliferation without increasing apoptosis, while 1280 J/cm2 increased apoptosis. RL increased intracellular reactive oxygen species generation and p53 phosphorylation. In animal models, 2560 J/cm2 RL significantly prevented melanoma growth and increased the expression of CD103+ dendritic cells. 1280 and 1920 J/cm2 RL decreased tumor volume, but not significantly. RL did not cause skin inflammation or erythema in normal skin. Conclusion RL represents a potentially safe and effective melanoma therapeutic. RL prevented tumor growth and increased the expression of immune markers, such as CD103, that are associated with favorable melanoma outcomes. Further research is needed to determine the optimal clinical treatment regimen for melanoma using RL.
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Affiliation(s)
- Evan Austin
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States,Department of Dermatology, University of California (UC) Davis Medical Center, Sacramento, CA, United States
| | - Alisen Huang
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States
| | - Jennifer Y. Wang
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States
| | - Marc Cohen
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States
| | - Edward Heilman
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States
| | - Emanual Maverakis
- Department of Dermatology, University of California (UC) Davis Medical Center, Sacramento, CA, United States
| | - Josef Michl
- Department of Pathology, SUNY Downstate Medical Center, Brooklyn, NY, United States
| | - Jared Jagdeo
- Department of Dermatology, State University of New York (SUNY) Downstate Medical Center, Brooklyn, NY, United States,Department of Dermatology, University of California (UC) Davis Medical Center, Sacramento, CA, United States,*Correspondence: Jared Jagdeo,
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9
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Low-power therapeutic lasers on mRNA levels. Lasers Med Sci 2022; 37:2353-2362. [PMID: 35288806 DOI: 10.1007/s10103-022-03541-z] [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: 09/30/2021] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
Abstract
Gene expression evaluation in cells and biological tissues has been crucial for research in biology, medicine, biotechnology, and diagnostic. Messenger ribonucleic acid (mRNA) levels show relationship with gene expression, and they can be measured by real-time quantitative polymerase chain reaction (RT-qPCR) for the quantification of steady-state mRNA levels in cells and biological tissues. Radiations emitted from low-power lasers induce photobiomodulation, which is the base of therapeutic protocols for disease treatment. Despite that the understanding on photobiomodulation has been improved by mRNA level evaluation, laser irradiation parameters and procedures are diversified among studies, harming the comparison of RT-qPCR data. In this systematic review, data from mRNA levels reported in photobiomodulation studies were summarized regarding the process, function, and gene. Literature search was conducted for the assessment of published reports on mRNA levels evaluated by RT-qPCR in cells and biological tissues exposed to low-power lasers. Data showed that mRNA levels have been evaluated by RT-qPCR for a variety of genes related to molecular, cellular, and systemic processes after low-power violet-orange, red, and infrared laser exposure. Results from gene expression have increased the understanding of the mechanisms involved in photobiomodulation, and they can be useful to increase the efficacy and safety of clinical applications based on low-power lasers.
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A Narrative Review on Oral and Periodontal Bacteria Microbiota Photobiomodulation, through Visible and Near-Infrared Light: From the Origins to Modern Therapies. Int J Mol Sci 2022; 23:ijms23031372. [PMID: 35163296 PMCID: PMC8836253 DOI: 10.3390/ijms23031372] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 12/13/2022] Open
Abstract
Photobiomodulation (PBM) consists of a photon energy transfer to the cell, employing non-ionizing light sources belonging to the visible and infrared spectrum. PBM acts on some intrinsic properties of molecules, energizing them through specific light wavelengths. During the evolution of life, semiconducting minerals were energized by sun radiation. The molecules that followed became photoacceptors and were expressed into the first proto-cells and prokaryote membranes. Afterward, the components of the mitochondria electron transport chain influenced the eukaryotic cell physiology. Therefore, although many organisms have not utilized light as an energy source, many of the molecules involved in their physiology have retained their primordial photoacceptive properties. Thus, in this review, we discuss how PBM can affect the oral microbiota through photo-energization and the non-thermal effect of light on photoacceptors (i.e., cytochromes, flavins, and iron-proteins). Sometimes, the interaction of photons with pigments of an endogenous nature is followed by thermal or photodynamic-like effects. However, the preliminary data do not allow determining reliable therapies but stress the need for further knowledge on light-bacteria interactions and microbiota management in the health and illness of patients through PBM.
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Antifungal Activity of a Neodymium-Doped Yttrium Aluminum Garnet 1,064-Nanometer Laser against Sporothrix globosa by Inducing Apoptosis and Pyroptosis via the NLRP3/Caspase-1 Signaling Pathway: In Vitro and In Vivo Study. Microbiol Spectr 2021; 9:e0136421. [PMID: 34908455 PMCID: PMC8672895 DOI: 10.1128/spectrum.01364-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Sporotrichosis is a deep fungal infection caused by Sporothrix species. Currently, itraconazole is the main treatment, but fungal resistance, adverse effects, and drug interactions remain major concerns, especially in patients with immune dysfunction. Therefore, an alternative treatment is greatly in demand. This animal study aimed to investigate the inhibitory effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) 1,064-nm laser treatment on Sporothrix globosa and to explore whether it happens through regulation of the Nod-like receptor thermoprotein domain-related protein 3 (NLRP3)/caspase-1 pyroptosis and apoptosis pathway. After laser irradiation, a series of studies, including assays of viability (using the cell counting kit-8 [CCK-8]), morphological structure changes, reactive oxygen species (ROS) accumulation, mitochondrial membrane potential, oxidative stress, cell cycle progression, and metacaspase activation, were conducted to estimate the effect of Nd:YAG 1,064-nm laser treatment on Sporothrix globosa cell apoptosis in vitro. For in vivo studies, mice were infected with S. globosa and then treated with laser or itraconazole, and their footpad skin lesions and the changes in the histology of tissue samples were compared. In addition, changes in the levels of NLRP3, caspase-1, and caspase-3 were assessed by immunohistochemistry, while the levels of interleukin 17 (IL-17), interferon gamma (IFN-γ), and transforming growth factor β1 (TGF-β1) in peripheral blood were tested by enzyme-linked immunosorbent assay (ELISA). The in vitro growth of S. globosa was inhibited and apoptosis was observed after laser treatment. According to the in vivo studies, the efficacy of the laser treatment was similar to that of itraconazole. Moreover, the NLRP3/caspase-1 pyroptosis pathway was activated, with a Th1/Th17 cell response, and the expression of caspase-3 was also upregulated. Nd:YAG 1,064-nm laser treatment can effectively inhibit the growth of S. globosa by activating fungal apoptosis and pyroptosis through the NLRP3/caspase-1 pathway. Therefore, Nd:YAG 1,064-nm laser irradiation is an alternative for sporotrichosis therapy. IMPORTANCE Nd:YAG 1,064-nm laser irradiation is a useful alternative for the treatment of sporotrichosis, especially in patients with liver dysfunction, pregnant women, and children, for whom the administration of antifungal drugs is not suitable. It may improve the overall treatment effect by shortening the duration of antifungal treatment and reducing tissue inflammation.
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