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Lama SBC, Pérez-González LA, Kosoglu MA, Dennis R, Ortega-Quijano D. Physical Treatments and Therapies for Androgenetic Alopecia. J Clin Med 2024; 13:4534. [PMID: 39124800 PMCID: PMC11313483 DOI: 10.3390/jcm13154534] [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: 05/26/2024] [Revised: 07/25/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
Androgenetic alopecia, the most common cause of hair loss affecting both men and women, is typically treated using pharmaceutical options, such as minoxidil and finasteride. While these medications work for many individuals, they are not suitable options for all. To date, the only non-pharmaceutical option that the United States Food and Drug Administration has cleared as a treatment for androgenetic alopecia is low-level laser therapy (LLLT). Numerous clinical trials utilizing LLLT devices of various types are available. However, a myriad of other physical treatments for this form of hair loss have been reported in the literature. This review evaluated the effectiveness of microneedling, pulsed electromagnetic field (PEMF) therapy, low-level laser therapy (LLLT), fractional laser therapy, and nonablative laser therapy for the treatment of androgenetic alopecia (AGA). It also explores the potential of multimodal treatments combining these physical therapies. The majority of evidence in the literature supports LLLT as a physical therapy for androgenetic alopecia. However, other physical treatments, such as nonablative laser treatments, and multimodal approaches, such as PEMF-LLLT, seem to have the potential to be equally or more promising and merit further exploration.
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Affiliation(s)
| | | | | | - Robert Dennis
- Biomedical Engineering Departments, UNC Chapel Hill and NC State University, Raleigh, NC 27695, USA;
| | - Daniel Ortega-Quijano
- Dermatology Department, University Hospital Ramón y Cajal, 28034 Madrid, Spain; (L.A.P.-G.); (D.O.-Q.)
- Hair Disorders Unit, Grupo Pedro Jaén, 28006 Madrid, Spain
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Balbinot G, Schuch CP, do Nascimento PS, Lanferdini FJ, Casanova M, Baroni BM, Vaz MA. Photobiomodulation Therapy Partially Restores Cartilage Integrity and Reduces Chronic Pain Behavior in a Rat Model of Osteoarthritis: Involvement of Spinal Glial Modulation. Cartilage 2021; 13:1309S-1321S. [PMID: 31569995 PMCID: PMC8804719 DOI: 10.1177/1947603519876338] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Chronic pain associated with osteoarthritis (OA) often leads to reduced function and engagement in activities of daily living. Current pharmacological treatments remain relatively ineffective. This study investigated the efficacy of photobiomodulation therapy (PBMT) on cartilage integrity and central pain biomarkers in adult male Wistar rats. DESIGN We evaluated the cartilage degradation and spinal cord sensitization using the monoiodoacetate (MIA) model of OA following 2 weeks of delayed PBMT treatment (i.e., 15 days post-MIA). Multiple behavioral tests and knee joint histology were used to assess deficits related to OA. Immunohistochemistry was performed to assess chronic pain sensitization in spinal cord dorsal horn regions. Furthermore, we analyzed the principal components related to pain-like behavior and cartilage integrity. RESULTS MIA induced chronic pain-like behavior with respective cartilage degradation. PBMT had no effects on overall locomotor activity, but positive effects on weight support (P = 0.001; effect size [ES] = 1.01) and mechanical allodynia (P = 0.032; ES = 0.51). Greater optical densitometry of PBMT-treated cartilage was evident in superficial layers (P = 0.020; ES = 1.34), likely reflecting the increase of proteoglycan and chondrocyte contents. In addition, PBMT effects were associated to decreased contribution of spinal glial cells to pain-like behavior (P = 0.001; ES = 0.38). CONCLUSION PBMT during the chronic phase of MIA-induced OA promoted cartilage recovery and reduced the progression or maintenance of spinal cord sensitization. Our data suggest a potential role of PBMT in reducing cartilage degradation and long-term central sensitization associated with chronic OA.
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Affiliation(s)
- Gustavo Balbinot
- Neuroscience Graduate Program,
Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da
Saúde, Porto Alegre, RS, Brazil,Brain Institute, Universidade Federal do
Rio Grande do Norte (UFRN), Natal, RN, Brazil,Gustavo Balbinot, Federal University of Rio
Grande do Norte, Av. Nascimento de Castro, 2155 - 59056-450 Natal, RN, Brazil.
| | - Clarissa Pedrini Schuch
- Graduate Program in Rehabilitation
Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto
Alegre, RS, Brazil
| | - Patricia Severo do Nascimento
- Neuroscience Graduate Program,
Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da
Saúde, Porto Alegre, RS, Brazil,Universidade Federal de Santa Maria
(UFSM), Santa Maria, RS, Brazil
| | - Fabio Juner Lanferdini
- Exercise Research Laboratory,
Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Mayra Casanova
- Exercise Research Laboratory,
Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Bruno Manfredini Baroni
- Graduate Program in Rehabilitation
Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto
Alegre, RS, Brazil
| | - Marco Aurélio Vaz
- Exercise Research Laboratory,
Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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Theodoro LH, Marcantonio RAC, Wainwright M, Garcia VG. LASER in periodontal treatment: is it an effective treatment or science fiction? Braz Oral Res 2021; 35:e099. [PMID: 34586213 DOI: 10.1590/1807-3107bor-2021.vol35.0099] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/31/2021] [Indexed: 12/29/2022] Open
Abstract
There are several studies that evaluate the use of lasers in periodontal treatment in non-surgical or surgical therapy. However, while several studies showed clinically beneficial effects of some lasers in periodontal treatment, there are few clinical reports of additional advantages of lasers as adjunctive treatments in periodontology. The aim of this paper is to demonstrate and critically analyze the level of scientific evidence of effects of low-level lasers and high-power lasers in periodontology. A narrative review of the studies was carried out in each topic and type of laser or periodontal treatment. In nonsurgical periodontal therapy the results showed that there is an additional clinical benefit when using a diode laser (DL) associated with scaling and root planing (SRP) in patients with moderate to severe periodontitis. The Er:YAG laser seems to be the most suitable for nonsurgical periodontal therapy and promotes the same clinical effects as conventional therapy. In periodontal surgery vaporization of the gingival or mucosal tissue can be carried out with DL, CO2, Nd:YAG, Er:YAG and Er,Cr:YSGG lasers. Photobiomodulation (PBM), mediated by low-level lasers associated with non-surgical periodontal therapy, promotes additional benefits in the short term and accelerates the bone and gingival tissue repair process and also reduces postoperative symptoms of periodontal surgery. The effect of antimicrobial Photodynamic Therapy is relevant in the initial reevaluation periods. Studies have shown controversial results of the use of lasers in periodontics, and this fact may be due to the lack of standard parameters of irradiation in each clinical application.
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Affiliation(s)
- Letícia Helena Theodoro
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Diagnostic and Surgery, Araçatuba, SP, Brazil
| | | | - Mark Wainwright
- Liverpool John Moores University, School of Pharmacy & Biomolecular Sciences, Liverpool, UK
| | - Valdir Gouveia Garcia
- Latin American Institute of Dental Research and Education - Ilapeo, Curitiba, PR, Brazil
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de Almeida JM, Matheus HR, Fiorin LG, Furquim EMA, Gusman DJR. Influence of immunosuppression on the progression of experimental periodontitis and on healthy periodontal tissue: A rat in vivo study. J Dent Res Dent Clin Dent Prospects 2021; 15:94-99. [PMID: 34386179 PMCID: PMC8346707 DOI: 10.34172/joddd.2021.016] [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: 09/30/2020] [Accepted: 12/05/2020] [Indexed: 12/17/2022] Open
Abstract
Background. The potent anti-inflammatory and immunosuppressive properties of glucocorticoids (GCs) might influence the progression of some disorders, such as periodontitis. Hence, this study aimed to investigate the influence of dexamethasone (DEX) on the alveolar bone loss (ABL) of healthy and periodontally compromised molars in rats. Methods. Thirty male rats were randomly assigned to two groups: physiological saline solution (PSS) and DEX. The animals received subcutaneous injections of either 0.5 mL of PSS) (group PSS) or 2 mg/kg of DEX (group DEX) from one day before experimental periodontitis (EP) induction until euthanasia. EP was induced through ligature placement around the mandibular lower first molars at day 0. Contralateral molars remained unligated. Ten animals per period were euthanized on days 3, 7, and 14. Morphometric analysis was performed to access the ABL. Data were statistically analyzed with ANOVA followed by post hoc Tukey tests (P ≤ 0.05). Results. Higher ABL was observed in both groups on days 7 and 14 than on day 3 (P ≤ 0.05). Concerning periodontitis, higher ABL was observed in group DEX on days 3, 7, and 14 days than group PSS at the same time intervals (P ≤ 0.05). Also, even in the contralateral unligated molars, group DEX exhibited higher ABL on days 3, 7, and 14 days than group PSS at the same time intervals (P ≤ 0.05). Conclusions. Collectively, it can be concluded that DEX aggravates EP and induces spontaneous ABL in the healthy periodontium.
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Affiliation(s)
- Juliano Milanezi de Almeida
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Henrique Rinaldi Matheus
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Luiz Guilherme Fiorin
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Elisa Mara Abreu Furquim
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
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Banerjee K, Madhyastha R, Nakajima Y, Maruyama M, Madhyastha H. Nanoceutical Adjuvants as Wound Healing Material: Precepts and Prospects. Int J Mol Sci 2021; 22:4748. [PMID: 33947121 PMCID: PMC8124138 DOI: 10.3390/ijms22094748] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023] Open
Abstract
Dermal wound healing describes the progressive repair and recalcitrant mechanism of 12 damaged skin, and eventually, reformatting and reshaping the skin. Many probiotics, nutritional supplements, metal nanoparticles, composites, skin constructs, polymers, and so forth have been associated with the improved healing process of wounds. The exact mechanism of material-cellular interaction is a point of immense importance, particularly in pathological conditions such as diabetes. Bioengineered alternative agents will likely continue to dominate the outpatient and perioperative management of chronic, recalcitrant wounds as new products continue to cut costs and improve the wound healing process. This review article provides an update on the various remedies with confirmed wound healing activities of metal-based nanoceutical adjuvanted agents and also other nano-based counterparts from previous experiments conducted by various researchers.
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Affiliation(s)
- Kaushita Banerjee
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, India;
| | - Radha Madhyastha
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan; (R.M.); (Y.N.); (M.M.)
| | - Yuichi Nakajima
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan; (R.M.); (Y.N.); (M.M.)
| | - Masugi Maruyama
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan; (R.M.); (Y.N.); (M.M.)
| | - Harishkumar Madhyastha
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, Miyazaki 8891692, Japan; (R.M.); (Y.N.); (M.M.)
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Mahran HG. Comparison Of The Efficacy Of Two Laser Types In Healing Of Full-Thickness Wound: An Experimental Study. RUSSIAN OPEN MEDICAL JOURNAL 2020. [DOI: 10.15275/rusomj.2020.0418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The aim of the study ― To investigate the effectiveness of pulsed laser with high intensity and laser with low intensity on a full-thickness wound in rats and to compare the effects of both laser types. Material and Methods ― Forty-five adult male rats were utilized in the present study. After anesthesia, wound of five cm2 was produced on dorsal aspect in each rat; then, the rats were randomly classified into three groups as follows: high power pulsating laser group (A) which received Nd: YAG laser with 1064 nm wavelength, low power laser group (B) which received GaAlAs laser with 830 nm wavelength, and control group (C) which received no treatment. Laser lights in groups (A) and (B) were introduced at an intensity of five joules per cm2 with a total energy of 25 joules for each wound area through the use of a scanning method and at a rate of 3 sessions per week for three weeks. Results ― At the end of treatment, better wound healing in form of more wound contraction and higher healing rate was elicited in both laser groups in comparison to wound healing in the control group, and there were no significantly different effects between both laser types. Conclusion ― At the intensity of five joules/cm2, both low-intensity and pulsating high-intensity lasers speed up the healing of the wound in rats, and there are no significant differences between their effects.
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Chao LL, Barlow C, Karimpoor M, Lim L. Changes in Brain Function and Structure After Self-Administered Home Photobiomodulation Treatment in a Concussion Case. Front Neurol 2020; 11:952. [PMID: 33013635 PMCID: PMC7509409 DOI: 10.3389/fneur.2020.00952] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury (TBI) is a common neurological disorder among athletes. Although there are no widely accepted treatments for TBI, new investigational approaches, such as photobiomodulation (PBM), are being tested. PBM is a light therapy that uses red to near-infrared (NIR) light to stimulate, heal, and protect tissue that has been injured or is at risk of dying. Benefits following transcranial PBM treatments in animal models of acute TBI and a small number of chronic TBI patients have been reported. However, the human PBM TBI studies published to date have been based on behavioral assessments. This report describes changes in behavioral and neuroimaging measures after 8 weeks of PBM treatments. The subject was a 23-year professional hockey player with a history of concussions, presumed to have caused his symptoms of headaches, mild anxiety, and difficulty concentrating. He treated himself at home with commercially available, low-risk PBM devices that used light-emitting diodes (LEDs) to emit 810-nm light pulsing at 10 or 40 Hz delivered by an intranasal and four transcranial modules that targeted nodes of the default mode network (DMN) with a maximum power density of 100 mW/cm2. After 8 weeks of PBM treatments, increased brain volumes, improved functional connectivity, and increased cerebral perfusion and improvements on neuropsychological test scores were observed. Although this is a single, sport-related case with a history of concussions, these positive findings encourage replication studies that could provide further validation for this non-invasive, non-pharmacological modality as a viable treatment option for TBI.
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Affiliation(s)
- Linda L Chao
- Departments of Radiology & Biomedical Imaging and Psychiatry & Behavioral Sciences, University of California, San Francisco, San Francisco, CA, United States.,VA Advanced Imaging Research Center, San Francisco VA Health Care System, San Francisco, CA, United States
| | - Cody Barlow
- VA Advanced Imaging Research Center, San Francisco VA Health Care System, San Francisco, CA, United States
| | | | - Lew Lim
- Vielight Inc., Toronto, ON, Canada
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Keshri GK, Yadav A, Verma S, Kumar B, Gupta A. Effects of Pulsed 810 nm Al-Ga-As Diode Laser on Wound Healing Under Immunosuppression: A Molecular Insight. Lasers Surg Med 2019; 52:424-436. [PMID: 31483061 DOI: 10.1002/lsm.23156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2019] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND OBJECTIVES Dysregulated inflammation is one of the major contributing factors for the prevalence of non-healing chronic wound in immunosuppressed subjects. Photobiomodulation (PBM) has emerged as a potential non-thermal, light-based therapeutic healing intervention for the treatment of impaired wounds. STUDY DESIGN/MATERIALS AND METHODS The present study delineates the underlying molecular mechanisms of PBM 810 nm laser-induced full-thickness cutaneous wound repair in immunosuppressed rats at continuous and pulsed wave-mode with power-density of 40 mW/cm 2 , fluence 22.6 J/cm 2 for 10 minutes daily for 7 post-wounding days. Molecular markers were assessed using biochemical, enzyme-linked immunosorbent assay quantification, enzyme kinetics and immunoblots analyses pertaining to inflammation, oxidative stress, cell survival, calcium signaling, and proliferation cascades. RESULTS Results distinctly revealed that pulsed 810 nm (10 Hz) PBM potentially influenced the cell survival and proliferation signaling pathway by significantly upregulated phospho-protein kinase B(phospho-Akt), phospho-extracellular-signal-regulated kinase 1 (ERK1), transient receptor potential vanilloid-3 (TRPV3), Ca2+ , calmodulin, transforming growth factor-β1 (TGF-β1), TGF-βR3, and Na + /K + -ATPase pump levels. PBM treatment resulted in reduction of exaggerated inflammatory responses evident by significantly repressed levels of interleukin-1β (IL-1β), IL-6, cyclooxygenase 2 (COX-2), and substance-P receptor (SPR), as well as inhibited apoptotic cell death by decreasing p53, cytochrome C, and caspase 3 levels (P < 0.05), which, in turn, effectively augment the wound repair in immunosuppressed rats. PBM treatment also lowered 4-hydroxynoneal (HNE) adduct level and NADP/NADPH ratio and upregulated the GRP78 expression, which might culminate into reduced oxidative stress and maintained the redox homeostasis. CONCLUSIONS Taken together, these findings would be helpful in better understanding of the molecular aspects involved in pulsed 810 nm laser-mediated dermal wound healing in immunosuppressed rats through regulation of cell survival and proliferation via Ca2+ -calmodulin, Akt, ERK, and redox signaling. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Gaurav K Keshri
- Pharmacology Devision, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110 054, India
| | - Anju Yadav
- Pharmacology Devision, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110 054, India
| | - Saurabh Verma
- Pharmacology Devision, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110 054, India
| | - Bhuvnesh Kumar
- Pharmacology Devision, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110 054, India
| | - Asheesh Gupta
- Pharmacology Devision, Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110 054, India
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Alberton Nuernberg MA, Janjacomo Miessi DM, Ivanaga CA, Bocalon Olivo M, Ervolino E, Gouveia Garcia V, Wainwright M, Theodoro LH. Influence of antimicrobial photodynamic therapy as an adjunctive to scaling and root planing on alveolar bone loss: A systematic review and meta-analysis of animal studies. Photodiagnosis Photodyn Ther 2019; 25:354-363. [DOI: 10.1016/j.pdpdt.2019.01.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 01/08/2019] [Accepted: 01/14/2019] [Indexed: 12/25/2022]
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Ribeiro GH, Minamisako MC, Rath IBDS, Santos AMB, Simões A, Pereira KCR, Grando LJ. Osteoradionecrosis of the jaws: case series treated with adjuvant low-level laser therapy and antimicrobial photodynamic therapy. J Appl Oral Sci 2018; 26:e20170172. [PMID: 29791570 PMCID: PMC5953563 DOI: 10.1590/1678-7757-2017-0172] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 12/13/2017] [Indexed: 11/22/2022] Open
Abstract
Background: Osteoradionecrosis of the jaw (ORNJ) is the most severe and complex sequel of head and neck radiotherapy (RT) because of the bone involved, it may cause pain, paresthesia, foul odor, fistulae with suppuration, need for extra oral communication and pathological fracture. We treated twenty lesions of ORNJ using low-level laser therapy (LLLT) and antimicrobial photodynamic therapy (aPDT). The objective of this study was to stimulate the affected area to homeostasis and to promote the healing of the oral mucosa. Methods: We performed aPDT on the exposed bone, while LLLT was performed around the bone exposure (red spectrum) and on the affected jaw (infrared spectrum). Monitoring and clinical intervention occurred weekly or biweekly for 2 years. Results: 100% of the sample presented clinical improvement, and 80% presented complete covering of the bone exposure by intact oral mucosa. Conclusion: LLLT and aPDT showed positive results as an adjuvant therapy to treat ORNJ.
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Affiliation(s)
- Guilherme Henrique Ribeiro
- Núcleo de Odontologia Hospitalar do Hospital Universitário, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | | | - Inês Beatriz da Silva Rath
- Núcleo de Odontologia Hospitalar do Hospital Universitário, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - Aira Maria Bonfim Santos
- Núcleo de Odontologia Hospitalar do Hospital Universitário, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - Alyne Simões
- Departamento de Biomateriais e Biologia Oral, Universidade de São Paulo, São Paulo, SP, Brasil
| | | | - Liliane Janete Grando
- Núcleo de Odontologia Hospitalar do Hospital Universitário, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
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Kim EJ, Kim SH. Anti-inflammatory effects of low-level laser in burn wound models in rats. ACTA ACUST UNITED AC 2017. [DOI: 10.14474/ptrs.2017.6.4.170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Eun-Jeong Kim
- Department of Physical Therapy, College of Public Health and Welfare, Dongshin University, Naju, Republic of Korea
| | - Se-Hun Kim
- Department of Physical Therapy, College of Public Health and Welfare, Dongshin University, Naju, Republic of Korea
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Tomazoni SS, Leal-Junior ECP, Frigo L, Pallotta RC, Teixeira S, de Almeida P, Bjordal JM, Lopes-Martins RÁB. Isolated and combined effects of photobiomodulation therapy, topical nonsteroidal anti-inflammatory drugs, and physical activity in the treatment of osteoarthritis induced by papain. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:108001. [PMID: 27752702 DOI: 10.1117/1.jbo.21.10.108001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 09/19/2016] [Indexed: 06/06/2023]
Abstract
Osteoarthritis (OA) is a chronic inflammatory disease and is characterized as a degenerative process. This study aimed to evaluate and compare the effects of a topical nonsteroidal anti-inflammatory drug (NSAID), physical activity, and photobiomodulation therapy (PBMT) applied alone and/or in combination between them in an experimental model of knee OA. OA was induced by injection of papain in the knees of rats. After 21 days, the animals started to be treated with the above treatment. Histological analysis shows that the experimental model of OA induction causes morphological changes consistent with the disease, and among treatments, the PBMT is the most effective for reducing these changes. Moreover, the results demonstrate that PBMT and NSAID reduce the total number of cells in the inflammatory infiltrate (p<0.05) and PBMT was the most effective for reducing the activity of myeloperoxidase (p<0.05). Finally, we observed that both NSAID and PBMT were effective for reducing the gene expression of MMP-3 (p<0.05), but in relation to the gene expression of MMP-13, PBMT was the most effective treatment (p<0.05). The results of this study indicate that PBMT is the most effective therapy in stopping disease progression, and improving inflammatory conditions observed in OA.
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Affiliation(s)
- Shaiane Silva Tomazoni
- University of São Paulo (USP), Laboratory of Pharmacology and Experimental Therapeutics, Department of Pharmacology, Institute of Biomedical Sciences, Avenida Lineu Prestes 1524, Butantan, São Paulo 05508-900, Brazil
| | - Ernesto Cesar Pinto Leal-Junior
- Nove de Julho University (UNINOVE), Post Graduate Program in Biophotonics Applied to Health Sciences and Post Graduate Program in Rehabilitation Sciences, Rua Vergueiro 235, São Paulo 01504-001, Brazil
| | - Lúcio Frigo
- Cruzeiro do Sul University (UNICSUL), Biological Sciences and Health Center, Avenida Doutor Ussiel Cirilo 225, São Paulo 08060-070, Brazil
| | - Rodney Capp Pallotta
- University of São Paulo (USP), Laboratory of Pharmacology and Experimental Therapeutics, Department of Pharmacology, Institute of Biomedical Sciences, Avenida Lineu Prestes 1524, Butantan, São Paulo 05508-900, Brazil
| | - Simone Teixeira
- University of São Paulo (USP), Laboratory of Pharmacology and Experimental Therapeutics, Department of Pharmacology, Institute of Biomedical Sciences, Avenida Lineu Prestes 1524, Butantan, São Paulo 05508-900, Brazil
| | - Patricia de Almeida
- University of São Paulo (USP), Laboratory of Pharmacology and Experimental Therapeutics, Department of Pharmacology, Institute of Biomedical Sciences, Avenida Lineu Prestes 1524, Butantan, São Paulo 05508-900, Brazil
| | - Jan Magnus Bjordal
- University of Bergen, Department of Global Public Health, Physiotherapy Research Group, PO Box 7804, Bergen, Norway
| | - Rodrigo Álvaro Brandão Lopes-Martins
- Universidade de Mogi das Cruzes (UMC), Biomedical Engineering Research and Post-Graduate Center, Avenida Doutor Cândido Xavier de Almeida e Souza, 200 Mogi das Cruzes, São Paulo 08780-911, BrazilfUniversidade Camilo Castelo Branco, Faculty of Medicine, Avenida dos Expedicionários Brasileiros, 781, Fernandópolis, São Paulo 15600-000, Brazil
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Silveira PCL, Scheffer DDL, Glaser V, Remor AP, Pinho RA, Aguiar Junior AS, Latini A. Low-level laser therapy attenuates the acute inflammatory response induced by muscle traumatic injury. Free Radic Res 2016; 50:503-13. [PMID: 26983894 DOI: 10.3109/10715762.2016.1147649] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The purpose of this work was to investigate the effect of early and long-term low-level laser therapy (LLLT) on oxidative stress and inflammatory biomarkers after acute-traumatic muscle injury in Wistar rats. Animals were randomly divided into the following four groups: control group (CG), muscle injury group (IG), CG + LLLT, and IG + LLLT: laser treatment with doses of 3 and 5 J/cm(2). Muscle traumatic injury was induced by a single-impact blunt trauma in the rat gastrocnemius. Irradiation for 3 or 5 J/cm(2) was initiated 2, 12, and 24 h after muscle trauma induction, and the treatment was continued for five consecutive days. All the oxidant markers investigated. namely thiobarbituric acid-reactive substance, carbonyl, superoxide dismutase, glutathione peroxidase, and catalase, were increased as soon as 2 h after muscle injury and remained increased up to 24 h. These alterations were prevented by LLLT at a 3 J/cm(2) dose given 2 h after the trauma. Similarly, LLLT prevented the trauma-induced proinflammatory state characterized by IL-6 and IL-10. In parallel, trauma-induced reduction in BDNF and VEGF, vascular remodeling and fiber-proliferating markers, was prevented by laser irradiation. In order to test whether the preventive effect of LLLT was also reflected in muscle functionality, we tested the locomotor activity, by measuring distance traveled and the number of rearings in the open field test. LLLT was effective in recovering the normal locomotion, indicating that the irradiation induced biostimulatory effects that accelerated or resolved the acute inflammatory response as well as the oxidant state elicited by the muscle trauma.
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Affiliation(s)
- Paulo Cesar Lock Silveira
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil ;,b Laboratório de Fisiologia e Bioquímica do Exercício - LaFiBe , Universidade do Extremo Sul Catarinense , Criciúma , Brazil
| | - Debora da Luz Scheffer
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Viviane Glaser
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Aline Pertile Remor
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Ricardo Aurino Pinho
- b Laboratório de Fisiologia e Bioquímica do Exercício - LaFiBe , Universidade do Extremo Sul Catarinense , Criciúma , Brazil
| | - Aderbal Silva Aguiar Junior
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
| | - Alexandra Latini
- a Laboratório de Bioenergética e Estresse Oxidativo - LABOX, Departamento de Bioquímica , Universidade Federal de Santa Catarina , Florianópolis , Brazil
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Kikuchi T, Mogi M, Okabe I, Okada K, Goto H, Sasaki Y, Fujimura T, Fukuda M, Mitani A. Adjunctive Application of Antimicrobial Photodynamic Therapy in Nonsurgical Periodontal Treatment: A Review of Literature. Int J Mol Sci 2015; 16:24111-26. [PMID: 26473843 PMCID: PMC4632741 DOI: 10.3390/ijms161024111] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/26/2015] [Accepted: 10/08/2015] [Indexed: 12/14/2022] Open
Abstract
Periodontal disease is caused by dental plaque biofilms, and the removal of these biofilms from the root surface of teeth plays a central part in its treatment. The conventional treatment for periodontal disease fails to remove periodontal infection in a subset of cases, such as those with complicated root morphology. Adjunctive antimicrobial photodynamic therapy (aPDT) has been proposed as an additional treatment for this infectious disease. Many periodontal pathogenic bacteria are susceptible to low-power lasers in the presence of dyes, such as methylene blue, toluidine blue O, malachite green, and indocyanine green. aPDT uses these light-activated photosensitizer that is incorporated selectively by bacteria and absorbs a low-power laser/light with an appropriate wavelength to induce singlet oxygen and free radicals, which are toxic to bacteria. While this technique has been evaluated by many clinical studies, some systematic reviews and meta-analyses have reported controversial results about the benefits of aPDT for periodontal treatment. In the light of these previous reports, the aim of this review is to provide comprehensive information about aPDT and help extend knowledge of advanced laser therapy.
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Affiliation(s)
- Takeshi Kikuchi
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Makio Mogi
- Department of Medicinal Biochemistry, School of Pharmacy, Aichi Gakuin University, Nagoya, Aichi 464-8650, Japan.
| | - Iichiro Okabe
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Kosuke Okada
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Hisashi Goto
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Yasuyuki Sasaki
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Takeki Fujimura
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Mitsuo Fukuda
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
| | - Akio Mitani
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Nagoya, Aichi 464-8651, Japan.
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Bjordal J, Baxter D, Leal JE, Cheing G, Laakso L. Evidence based use of electrophysical agents for managing musculoskeletal pain. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Passanezi E, Damante CA, de Rezende MLR, Greghi SLA. Lasers in periodontal therapy. Periodontol 2000 2014; 67:268-91. [DOI: 10.1111/prd.12067] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2014] [Indexed: 12/12/2022]
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Effect of LLLT on autogenous bone grafts in the repair of critical size defects in the calvaria of immunosuppressed rats. J Craniomaxillofac Surg 2014; 42:1196-202. [DOI: 10.1016/j.jcms.2014.02.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 02/12/2014] [Accepted: 02/13/2014] [Indexed: 12/21/2022] Open
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Arora S, Lamba AK, Faraz F, Tandon S, Chawla K, Yadav N. Treatment of Oral Fibroma of the Tongue Using Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser: Report of Two Cases. Clin Adv Periodontics 2014. [DOI: 10.1902/cap.2012.120069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Naghdi S, Ansari NN, Fathali M, Bartley J, Varedi M, Honarpishe R. A pilot study into the effect of low-level laser therapy in patients with chronic rhinosinusitis. Physiother Theory Pract 2013; 29:596-603. [PMID: 23521568 DOI: 10.3109/09593985.2013.775204] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chronic rhinosinusitis (CRS) is a common inflammatory disease of the nose and paranasal sinuses that has a significant impact on patients' quality of life. No study has examined the effectiveness of applying low-level laser therapy (LLLT) locally over the sinuses in patients with CRS. The aim of this study was to evaluate the effect of LLLT in patients with CRS. Fifteen adult patients with CRS participated in this pilot pretest-posttest clinical study. Patients were treated with a 830-nm Ga-Al-As laser in continuous-wave mode at a power output of 30 mW and energy dose of 1 J. Laser irradiation was delivered on six points over each maxillary or frontal sinus with 33 sec irradiation for each point and a total treatment duration of 198 sec for each sinus. Patients were given LLLT three times per week for ten treatment sessions. Patients were asked to score their symptoms in accordance with a four-point scale (0-3), and a total symptom score (TSS) for each patient was calculated. Percentage improvement of TSS was considered as the primary outcome measure. TSS was calculated at baseline (T0), at 2 weeks (T1) and at 4 weeks (T2). The TSS was improved significantly at T1 (39%) and at T2 (46.34%). A large effect size for LLLT was found (ηp(2) ηp(2) = 0.63). The therapeutic effect was sustained for a mean of 5 months. This pilot study indicates that LLLT applied for 4 weeks improves symptoms in patients with CRS.
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Affiliation(s)
- Soofia Naghdi
- Assistant Professor, Department of Physiotherapy, School of Rehabilitation , Tehran University of Medical Sciences , Tehran , Iran
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Prindeze NJ, Moffatt LT, Shupp JW. Mechanisms of action for light therapy: a review of molecular interactions. Exp Biol Med (Maywood) 2013; 237:1241-8. [PMID: 23239434 DOI: 10.1258/ebm.2012.012180] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Five decades after the first documented use of a laser for wound healing, research in light therapy has yet to elucidate the underlying biochemical pathways causing its effects. The aim of this review is to summarize the current research into the biochemical mechanisms of light therapy in order to better direct future studies. The implication of cytochrome c oxidase as the photoacceptor modulating light therapy is reviewed, as are the predominant hypotheses of the biochemical pathways involved in the stimulation of wound healing, cellular proliferation, production of transcription factors and other reported stimulatory effects.
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Affiliation(s)
- Nicholas J Prindeze
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, MedStar Health, Research Institute, Washington, DC 20010, USA
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Kara C, Demir T, Özbek E. Evaluation of low-level laser therapy in rabbit oral mucosa after soft tissue graft application: A pilot study. J COSMET LASER THER 2013; 15:326-9. [DOI: 10.3109/14764172.2012.748197] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Gavish L, Rubinstein C, Berlatzky Y, Gavish LY, Beeri R, Gilon D, Bulut A, Harlev M, Reissman P, Gertz SD. Low level laser arrests abdominal aortic aneurysm by collagen matrix reinforcement in apolipoprotein E-deficient mice. Lasers Surg Med 2012; 44:664-74. [DOI: 10.1002/lsm.22068] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2012] [Indexed: 12/20/2022]
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Alberti LR, Vasconcellos LDS, Petroianu A. Influence of local or systemic corticosteroids on skin wound healing resistance. Acta Cir Bras 2012; 27:295-9. [DOI: 10.1590/s0102-86502012000400003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 02/14/2012] [Indexed: 11/21/2022] Open
Abstract
PURPOSE: To compare the resistance of skin wound healing of mice submitted to local or systemic hydrocortisone administration, in different postoperative periods. METHODS: An incision and suture was performed on the thoracic skin of 130 male mice: Group 1 (n = 10) resistance of the integer skin; Group 2 (n = 30) submitted only to skin incision and suture; Group 3 (n = 30) skin incision and suture followed by administration of saline fluid; Group 4 (n = 30) skin incision and suture followed by administration of local hydrocortisone; Group 5 (n = 30) skin incision and suture followed by administration of systemic hydrocortisone. The resistance of the wound healing and the weight of the animals were studied on the seventh, 14th and 21st postoperative days. Histological examination was also performed. RESULTS: The mice that received corticoid (groups 4 and 5) presented significant decreasing on their weight (p = 0.02). The Groups 3, 4 and 5 showed lower scar resistance than Group 2 on the seventh postoperative day (p < 0.05). On the 14th and 21st days, there was no difference on the skin would healing resistance (p > 0.05). CONCLUSION: Administration of hydrocortisone in mice is responsible for weight decreasing and reduction of the skin wound healing resistance during the first postoperative week.
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da Rosa AS, dos Santos AF, da Silva MM, Facco GG, Perreira DM, Alves ACA, Leal Junior ECP, de Carvalho PDTC. Effects of Low-level Laser Therapy at Wavelengths of 660 and 808 nm in Experimental Model of Osteoarthritis. Photochem Photobiol 2011; 88:161-6. [DOI: 10.1111/j.1751-1097.2011.01032.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Vescovi P, Manfredi M, Merigo E, Guidotti R, Meleti M, Pedrazzi G, Fornaini C, Bonanini M, Ferri T, Nammour S. Early surgical laser-assisted management of bisphosphonate-related osteonecrosis of the jaws (BRONJ): a retrospective analysis of 101 treated sites with long-term follow-up. Photomed Laser Surg 2011; 30:5-13. [PMID: 22054203 DOI: 10.1089/pho.2010.2955] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND DATA The management of bisphosphonate-related osteonecrosis of the jaws (BRONJ) is still controversial. OBJECTIVE The purpose of this study was to compare surgical and nonsurgical approaches to the treatment of BRONJ and the possible usefulness of Nd:YAG and Er:YAG lasers. METHODS One hundred and twenty-eight patients (33 males, 95 females; 52 with diagnosis of multiple myeloma, 53 with diagnosis of bone metastasis, and 23 with diagnosis of osteoporosis) affected by BRONJ were evaluated at the Unit of Oral Pathology and Medicine and Laser-Assisted Surgery of the University of Parma, Italy, between January 2004 and July 2009. Overall number of BRONJ sites was 151, and number of treated sites was 101. In order to assess the efficacy of different treatments, sites were subclassified as follows: Group 1 (G1): 12 sites treated with medical therapy; Group 2 (G2): 27 sites treated with medical therapy associated with low level laser therapy (LLLT); Group 3 (G3): 17 sites treated with a combination of medical and surgical therapy; Group 4 (G4): 45 sites treated with a combination of medical therapy, surgical (including laser-assisted) therapy, and LLLT. Outcome of treatment was assessed using the staging system proposed by Ruggiero et al. Transition from a higher stage to a lower one for at least 6 months was considered as clinical improvement and suggestive of a successful treatment. RESULTS Clinical improvement was achieved in 3 out of 12 (25%) BRONJ sites in G1. Sites if G2 with an improvement were 18 out of 27 (66%). Nine out 17 BRONJ sites (53%) in G3 had a transition to a lower stage after treatment. For sites in G4, a clinical improvement was recorded in 40 out of 45 cases (89%). CONCLUSIONS In our experience, the percentage of success obtained with a combined approach based on medical therapy, surgical (including laser-assisted) therapy, and LLLT (G4) is significantly higher than the percentage of improvement obtained in G1, G2, and G3.
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Affiliation(s)
- Paolo Vescovi
- Oral Medicine, Pathology and Laser-Assisted Surgery Unit, University of Parma, Parma, Italy
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Low-Level Laser Therapy (LLLT) at 830 nm Positively Modulates Healing of Tracheal Incisions in Rats: A Preliminary Histological Investigation. Photomed Laser Surg 2011; 29:613-8. [DOI: 10.1089/pho.2010.2950] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Garcia VG, Macarini VC, de Almeida JM, Bosco AF, Nagata MJH, Okamoto T, Longo M, Theodoro LH. Influence of low-level laser therapy on wound healing in nicotine-treated animals. Lasers Med Sci 2011; 27:437-43. [DOI: 10.1007/s10103-011-0956-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 06/24/2011] [Indexed: 12/17/2022]
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Bottura P, Milanezi J, Fernandes L, Caldas H, Abbud-Filho M, Garcia V, Baptista M. Nonsurgical Periodontal Therapy Combined with Laser and Photodynamic Therapies for Periodontal Disease in Immunosuppressed Rats. Transplant Proc 2011; 43:2009-16. [DOI: 10.1016/j.transproceed.2011.03.083] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 03/29/2011] [Indexed: 11/16/2022]
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Santuzzi CH, Buss HF, Pedrosa DF, Freire MOVM, Nogueira BV, Gonçalves WLS. Uso combinado da laserterapia de baixa potência e da inibição da ciclooxigenase-2 na reepitelização de ferida incisional em pele de camundongos: um estudo pré-clínico. An Bras Dermatol 2011; 86:278-83. [DOI: 10.1590/s0365-05962011000200011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Accepted: 06/24/2010] [Indexed: 11/21/2022] Open
Abstract
FUNDAMENTOS: A laserterapia de baixa potência e os inibidores seletivos da ciclooxigenase-2 (ICOX2) vem sendo muito utilizados para modular a resposta inflamatória, entretanto, os seus efeitos na reepitelização de feridas não são bem compreendidos. OBJETIVO: Avaliar os efeitos isolados e combinados da laserterapia de baixa potência e da ICOX2 na reepitelização de ferida incisional na pele de camundongos. MÉTODO: Foi induzida uma ferida de 1 cm no dorso de cada camundongo, que foram divididos em quatro grupos (N=20): Controle, Laserterapia, Tratados com celecoxib e Terapia conjugada. Os animais dos grupos celecoxib e Terapia conjugada foram tratados com celecoxib por 10 dias antes da incisão cutânea. As feridas experimentais foram irradiadas com laserterapia de baixa potência He-Ne (632nm, dose: 4J/cm2) em varredura, por 12 segundos durante três dias consecutivos nos grupos Laserterapia e Terapia conjugada. Os animais foram sacrificados no 3º dia de pós-operatório. Amostras das feridas foram coletadas e coradas (Tricromio de Masson) para análise histomorfométrica. RESULTADOS: Tanto o grupo Laserterapia, quanto o grupo celecoxib, mostrou aumento da reepitelização cutânea em relação ao grupo Controle, entretanto, o grupo Terapia conjugada não apresentou diferenças. Quanto à queratinização o grupo Laserterapia e Terapia conjugada apresentaram redução dos queratinócitos, comparados com o grupo Controle. CONCLUSÕES: Os resultados mostram que o uso da laserterapia de baixa potência e da ICOX2 isoladamente aumentam as células epiteliais, mas somente a laserterapia de baixa potência reduziu os queratinócitos cutâneos. O tratamento conjugado restabelece a reepitelização inata e dimunui a queratinização, embora ocorra uma acelerada contração da ferida com melhora na organização da ferida na pele de camundongos.
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Sperandio FF, Simões A, Aranha ACC, Corrêa L, Orsini Machado de Sousa SC. Photodynamic therapy mediated by methylene blue dye in wound healing. Photomed Laser Surg 2011; 28:581-7. [PMID: 20961226 DOI: 10.1089/pho.2009.2601] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE We sought to investigate the wound-healing process after photodynamic therapy (PDT) mediated by methylene blue dye (MB). BACKGROUND DATA Few scientific studies show the PDT roles in wound healing. MATERIALS AND METHODS One hundred rats were given a circular wound on the back, inflicted with a 6-mm-diameter punch. The animals were divided into four groups: control (no treatment); dye (topical application of MB); laser (InGaAlP, 117.85 J/cm(2), 100 mW, 660 nm, single point); and PDT (topical application of MB followed by laser irradiation). After 1, 3, 5, 7, and 14 days, the cutaneous wounds were photographed and assessed with histopathologic examination by using light microscope. Changes seen in edema, necrosis, inflammation, granulation tissue, re-epithelialization, and number of young fibroblasts were semiquantitatively evaluated. The wound-area changes were measured with special software and submitted to statistical analysis. RESULTS The laser group demonstrated the smallest wound area at 14 days after the surgical procedure (p < 0.01). Concerning complete re-epithelialization, the laser group showed it at 5-7 days after surgery, whereas the PDT and the other groups showed it at 14 days. CONCLUSIONS Laser interaction with tissue is somehow changed when exposed to the MB. PDT mediated by MB was not prejudicial to wound healing, as no delay occurred compared with the control group.
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Fernandes LA, Martins TM, de Almeida JM, Theodoro LH, Garcia VG. Radiographic assessment of photodynamic therapy as an adjunctive treatment on induced periodontitis in immunosuppressed rats. J Appl Oral Sci 2010; 18:237-43. [PMID: 20857000 PMCID: PMC5349045 DOI: 10.1590/s1678-77572010000300007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2008] [Accepted: 02/16/2010] [Indexed: 12/13/2022] Open
Abstract
Objective The aim of this study was to assess radiographically the effect of photodynamic
therapy (PDT) as an adjunctive treatment to scaling and root planing (SRP) on
induced periodontitis in dexamethasone-induced immunosuppressed rats. Material and Methods The animals were divided into 2 groups: ND group (n=60): saline treatment; D group
(n=60): dexamethasone treatment. In both ND and D groups, periodontal disease was
induced by the placement of a ligature in the left first mandibular molar. After 7
days, ligature was removed and all animals received SRP, being divided according
to the following treatments: SRP: saline and PDT: phenothiazinium dye (TBO) plus
laser irradiation. Ten animals per treatment were killed at 7, 15 and 30 days. The
distance between the cementoenamel junction and the height of the alveolar bone
crest in the mesial surface of the mandibular left first molars was determined in
millimeters in each radiograph. The radiographic values were analyzed
statistically by ANOVA and Tukey's test at a p value <0.05. Results Intragroup radiographic assessment (ND and D groups) showed that there was
statistically significant less bone loss in the animals treated with PDT in all
experimental periods compared to those submitted to SRP. Intergroup radiographic
analysis (ND and D groups) demonstrated that there was greater bone loss in the ND
group treated with SRP compared to the D group treated with PDT at 7 and 30
days. Conclusion PDT was an effective adjunctive treatment to SRP on induced periodontitis in
dexamethasone-induced immunosuppressed rats.
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Affiliation(s)
- Leandro Araújo Fernandes
- Department of Surgery and Integrated Clinic, Araçatuba Dental School, São Paulo State University, Araçatuba, SP, Brazil.
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Silveira PCL, Silva LA, Freitas TP, Latini A, Pinho RA. Effects of low-power laser irradiation (LPLI) at different wavelengths and doses on oxidative stress and fibrogenesis parameters in an animal model of wound healing. Lasers Med Sci 2010; 26:125-31. [DOI: 10.1007/s10103-010-0839-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Accepted: 09/12/2010] [Indexed: 12/21/2022]
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Santos NR, dos Santos JN, dos Reis JA, Oliveira PC, de Sousa APC, de Carvalho CM, Soares LG, Marques AM, Pinheiro ALB. Influence of the Use of Laser Phototherapy (λ660 or 790 nm) on the Survival of Cutaneous Flaps on Diabetic Rats. Photomed Laser Surg 2010; 28:483-8. [DOI: 10.1089/pho.2009.2500] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Nicole R.S. Santos
- School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Jean N. dos Santos
- Oral Pathology, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | - João A. dos Reis
- School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | | | | | - Luiz G.P. Soares
- School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Antonio Luiz B. Pinheiro
- School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
- Universidade Camilo Castelo Branco, São José dos Campos, Paulo, Brazil
- Instituto Nacional de Óptica e Fotônica, São Carlos, Brazil
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Peplow PV, Chung TY, Baxter GD. Laser Photobiomodulation of Wound Healing: A Review of Experimental Studies in Mouse and Rat Animal Models. Photomed Laser Surg 2010; 28:291-325. [DOI: 10.1089/pho.2008.2446] [Citation(s) in RCA: 149] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Philip V. Peplow
- Department of Anatomy & Structural Biology, University of Otago, Dunedin, New Zealand
| | - Tzu-Yun Chung
- Department of Anatomy & Structural Biology, University of Otago, Dunedin, New Zealand
| | - G. David Baxter
- Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
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Effects of equal daily doses delivered by different power densities of low-level laser therapy at 670 nm on open skin wound healing in normal and corticosteroid-treated rats: a brief report. Lasers Med Sci 2010; 25:761-6. [DOI: 10.1007/s10103-010-0791-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Indexed: 10/19/2022]
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36
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Demir T, Kara C, Özbek E, Kalkan Y. Evaluation of Neodymium-Doped Yttrium Aluminium Garnet Laser, Scalpel Incision Wounds, and Low-Level Laser Therapy for Wound Healing in Rabbit Oral Mucosa: A Pilot Study. Photomed Laser Surg 2010; 28:31-7. [DOI: 10.1089/pho.2008.2449] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Turgut Demir
- Department of Periodontology, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Cankat Kara
- Department of Periodontology, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Elvan Özbek
- Department of Histology and Embryology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Yıldıray Kalkan
- Department of Histology and Embryology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
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Li B, Chu X, Gao M, Li W. Apoptotic mechanism of MCF-7 breast cells in vivo and in vitro induced by photodynamic therapy with C-phycocyanin. Acta Biochim Biophys Sin (Shanghai) 2010; 42:80-9. [PMID: 20043050 DOI: 10.1093/abbs/gmp104] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The aim of this study was to investigate the pro-apoptotic mechanism of C-phycocyanin (C-PC)-mediated photodynamic therapy (PDT) in a murine tumor model and cultured MCF-7 cells. The mice were divided into four groups: control, He-Ne laser radiation, C-PC treatment, and C-PC treatment + He-Ne laser radiation. The effects of C-PC and/or laser on immune organs, immunocyte proliferation, tumor genesis, and apoptosis-related proteins expressions were investigated by immunohistochemistry, in situ hybridization, MTT, electron microscope, western blot, and immunofluorescence assay. The results showed that He-Ne laser treatment alone showed marginal effects. In C-PC-treated mice, the weight of immune organs, proliferation of immunocytes, and expression of pro-apoptotic Fas protein were increased, whereas the tumor weight and the expressions of anti-apoptotic proteins (NF-kappaB and P53) and CD44 mRNA were comparatively decreased. In vitro, C-PC was able to inhibit MCF-7 cell proliferation and cause ultrastructural changes including microvilli loss, formation of membrane blebs, and chromatin condensation. Moreover, C-PC treatment could activate caspase-9 expression, induce cytochrome c release, and downregulate Bcl-2 expression. When combined with He-Ne laser irradiation, the effects of C-PC treatment were further enhanced. Facilitating the apoptosis signals transduction and finally leading to the apoptosis of MCF-7 cells may be the mechanism of the anti-tumor activities of C-PC-mediated PDT.
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Affiliation(s)
- Bing Li
- Department of Biology, Medical College of Qingdao University, Qingdao, China.
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38
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Fulop AM, Dhimmer S, Deluca JR, Johanson DD, Lenz RV, Patel KB, Douris PC, Enwemeka CS. A Meta-analysis of the Efficacy of Phototherapy in Tissue Repair. Photomed Laser Surg 2009; 27:695-702. [DOI: 10.1089/pho.2009.2550] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Andras M. Fulop
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - Seema Dhimmer
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - James R. Deluca
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - David D. Johanson
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - Richard V. Lenz
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - Keyuri B. Patel
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - Peter C. Douris
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
| | - Chukuka S. Enwemeka
- Department of Physical Therapy, School of Health Professions, New York Institute of Technology, Old Westbury, New York
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39
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Effect of photodynamic therapy on the healing of cutaneous third-degree-burn: histological study in rats. Lasers Med Sci 2009; 25:221-8. [PMID: 19533211 DOI: 10.1007/s10103-009-0694-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Accepted: 05/26/2009] [Indexed: 01/01/2023]
Abstract
The aim of this study was to conduct a histological assessment of the effect of photodynamic therapy (PDT) on the repairing of third-degree-burn wounds made on the backs of rats with a heated scalpel. Ninety-six rats were divided into groups: G1, control (n = 24), cold scalpel; G2, burned, heated scalpel (n = 24); G3, low-level laser therapy (LLLT) (n = 24), on burns; and G4, photodynamic therapy (PDT) (n = 24), toluidine-O blue (100 microg/ml) and LLLT treatment on burns. The laser (685 nm) was applied in continuous mode, 50 mW, 4.5 J/cm(2), contact mode at nine points (9 s/point). Eight animals in each group were killed at 3 days, 7 days or 14 days after surgery, and tissue specimens containing the whole wounded area were removed and processed for histological analysis; the results were statistically analyzed with Kruskal-Wallis and Dunn's tests (P < 0.05). The results demonstrated significant differences between G2 and G3, and between G2 and G4, at both 3 days and 7 days, with regard to acute inflammation scores; G1 and G2 showed significant differences when compared with G4 at 3 days, with regard to neo-angiogenesis scores; G1 and G2 were statistically different from G3 and G4 at both 3 days and 7 days, with regard to re-epithelization scores; G2 showed statistically significant differences when compared with G3 and G4 with regard to collagen fiber scores at 7 days. LLLT and PDT acted as a biostimulating coadjuvant agent, balancing the undesirable effect of the burn on the wound healing process, acting mainly in the early healing stages, hastening inflammation and increasing collagen deposition.
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40
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Garcia VG, Fernandes LA, de Almeida JM, Bosco ÁF, Nagata MJH, Martins TM, Okamoto T, Theodoro LH. Comparison between laser therapy and non-surgical therapy for periodontitis in rats treated with dexamethasone. Lasers Med Sci 2009; 25:197-206. [DOI: 10.1007/s10103-009-0678-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2008] [Accepted: 04/28/2009] [Indexed: 12/14/2022]
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41
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Freitas TP, Gomes M, Fraga DB, Freitas LS, Rezin GT, Santos PM, Silveira PC, Paula MM, Pinho RA, Streck EL. Effect of therapeutic pulsed ultrasound on lipoperoxidation and fibrogenesis in an animal model of wound healing. J Surg Res 2009; 161:168-71. [PMID: 19577772 DOI: 10.1016/j.jss.2009.04.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 03/30/2009] [Accepted: 04/01/2009] [Indexed: 11/17/2022]
Abstract
Evidence from the literature has shown that the wound healing process is enhanced by ultrasound therapy. In the present study, we measured thiobarbituric acid-reactive substances (TBARS; index of lipoperoxidation) and hydroxyproline (index of collagen synthesis) levels in wounds after therapeutic pulsed ultrasound (TPU) treatment. Male Wistar rats were submitted to skin ulceration, and three doses of TPU (0.4, 0.6, and 0.8W/cm(2)) were used. A circular area of skin was removed with a punch biopsy from the medial dorsal region. After TPU for 10 days, TBARS (Draper and Hadley [21]) and hydroxyproline (Woessner [22]) levels were measured in the tissue around the wound. Results showed that TPU improved wound healing, since the wound size was significantly smaller 5 and 10 days after ulceration in groups submitted to this treatment. Moreover, TBARS levels were decreased in the 0.4, 0.6, and 0.8W/cm(2) TPU groups, and hydroxyproline levels were increased in the 0.6 and 0.8W/cm(2) TPU groups. These findings indicate that TPU presents beneficial effects on the wound healing process, probably by speeding up the inflammatory phase and inducing collagen synthesis.
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Affiliation(s)
- Tiago P Freitas
- Laboratório de Fisiopatologia Experimental, Programa de Pós-graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
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42
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Fernandes LA, de Almeida JM, Theodoro LH, Bosco AF, Nagata MJH, Martins TM, Okamoto T, Garcia VG. Treatment of experimental periodontal disease by photodynamic therapy in immunosuppressed rats. J Clin Periodontol 2009; 36:219-28. [DOI: 10.1111/j.1600-051x.2008.01355.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Dall Agnol MA, Nicolau RA, de Lima CJ, Munin E. Comparative analysis of coherent light action (laser) versus non-coherent light (light-emitting diode) for tissue repair in diabetic rats. Lasers Med Sci 2009; 24:909-16. [DOI: 10.1007/s10103-009-0648-5] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2008] [Accepted: 01/22/2009] [Indexed: 11/28/2022]
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44
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Oliveira PC, Meireles GCS, dos Santos NR, de Carvalho CM, de Souza APC, dos Santos JN, Pinheiro ALB. The use of light photobiomodulation on the treatment of second-degree burns: a histological study of a rodent model. Photomed Laser Surg 2009; 26:289-99. [PMID: 18647088 DOI: 10.1089/pho.2007.2148] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of this investigation was to compare, by light microscopy, the effects of the use of laser photobiomodulation (LPBM) and polarized light (PL) on second-degree burns on rodents. BACKGROUND DATA Burns are severe injuries that result in the loss of tissue fluids, destruction of tissues, infection, and shock. With severe and widespread third-degree burns death may occur. Several light sources have been suggested as being effective for improving wound healing. MATERIALS AND METHODS Forty five rats were used in this study. A second-degree burn was created on the dorsum of each animal, and the animals were divided into four groups: PL (400-2000 nm, 40 mW, 2.4 J/cm(2)/min); LPBM-1 (780 nm, 35/40 mW, theta approximately 2 mm, 4 x 5 J/cm(2)); LPBM-2 (660 nm, 35/40 mW, theta approximately 2 mm, 4 x 5 J/cm(2)); and untreated animals acted as controls. The treatment was started immediately post-burn at four points around the burned area (laser: 5 J/cm(2) per site). The illumination with PL was performed according to the manufacturer's instructions. Treatments were repeated at 24-h intervals for 7 d. The animals were sacrifice at 3, 5, and 7 d post-burn. The specimens were routinely cut and stained and analyzed by light microscopy using hematoxylin and eosin and Sirius red. RESULTS The analysis of the results demonstrated that the damaged tissue was able to efficiently absorb and process the light at all tested wavelengths. LPBM at 660 nm showed better results at early stages of wound healing. However, the use of 780-nm laser light had beneficial effects throughout the experimental period, with the animals growing newly-formed tissue similar to normal dermis. CONCLUSION Despite our findings that the use of both types of light energy improved the healing of second-degree burns at the early stages, long-term assessment is needed to verify if this improvement will influence the final results of treatment.
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Affiliation(s)
- Priscila Chagas Oliveira
- Laser Center, School of Dentistry, Department of Propedeutica and Clínica Integrada, Federal University of Bahia, Salvador, Brazil
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Evaluation of mitochondrial respiratory chain activity in muscle healing by low-level laser therapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 95:89-92. [PMID: 19232497 DOI: 10.1016/j.jphotobiol.2009.01.004] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 12/10/2008] [Accepted: 01/14/2009] [Indexed: 11/22/2022]
Abstract
BACKGROUND Recent studies demonstrate that low-level laser therapy (LLLT) modulates many biochemical processes, especially the decrease of muscle injures, the increase in mitochondrial respiration and ATP synthesis for accelerating the healing process. OBJECTIVE In this work, we evaluated mitochondrial respiratory chain complexes I, II, III and IV and succinate dehydrogenase activities after traumatic muscular injury. METHODS Male Wistar rats were randomly divided into three groups (n=6): sham (uninjured muscle), muscle injury without treatment, muscle injury with LLLT (AsGa) 5J/cm(2). Gastrocnemius injury was induced by a single blunt-impact trauma. LLLT was used 2, 12, 24, 48, 72, 96, and 120 hours after muscle-trauma. RESULTS Our results showed that the activities of complex II and succinate dehydrogenase after 5days of muscular lesion were significantly increased when compared to the control group. Moreover, our results showed that LLLT significantly increased the activities of complexes I, II, III, IV and succinate dehydrogenase, when compared to the group of injured muscle without treatment. CONCLUSION These results suggest that the treatment with low-level laser may induce an increase in ATP synthesis, and that this may accelerate the muscle healing process.
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Effect of equal daily doses achieved by different power densities of low-level laser therapy at 635 nm on open skin wound healing in normal and corticosteroid-treated rats. Lasers Med Sci 2008; 24:539-47. [DOI: 10.1007/s10103-008-0604-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Accepted: 07/18/2008] [Indexed: 10/21/2022]
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47
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Reis SR, Medrado AP, Marchionni AMT, Figueira C, Fracassi LD, Knop LA. Effect of 670-nm Laser Therapy and Dexamethasone on Tissue Repair: A Histological and Ultrastructural Study. Photomed Laser Surg 2008; 26:307-13. [DOI: 10.1089/pho.2007.2151] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sílvia R.A. Reis
- Department of Propaedeutics and Integrated Clinic, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | | | | | | | - Larissa D. Fracassi
- Department of Propaedeutics and Integrated Clinic, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Luégya A.H. Knop
- Department of Propaedeutics and Integrated Clinic, School of Dentistry, Federal University of Bahia, Salvador, Brazil
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Demidova-Rice TN, Salomatina EV, Yaroslavsky AN, Herman IM, Hamblin MR. Low-level light stimulates excisional wound healing in mice. Lasers Surg Med 2008; 39:706-15. [PMID: 17960752 DOI: 10.1002/lsm.20549] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Low levels of laser or non-coherent light, termed low-level light therapy (LLLT) have been reported to accelerate some phases of wound healing, but its clinical use remains controversial. METHODS A full thickness dorsal excisional wound in mice was treated with a single exposure to light of various wavelengths and fluences 30 minutes after wounding. Wound areas were measured until complete healing and immunofluorescence staining of tissue samples was carried out. RESULTS Wound healing was significantly stimulated in BALB/c and SKH1 hairless mice but not in C57BL/6 mice. Illuminated wounds started to contract while control wounds initially expanded for the first 24 hours. We found a biphasic dose-response curve for fluence of 635-nm light with a maximum positive effect at 2 J/cm(2). Eight hundred twenty nanometer was found to be the best wavelength tested compared to 635, 670, and 720 nm. We found no difference between non-coherent 635+/-15-nm light from a lamp and coherent 633-nm light from a He/Ne laser. LLLT increased the number of alpha-smooth muscle actin (SMA)-positive cells at the wound edge. CONCLUSION LLLT stimulates wound contraction in susceptible mouse strains but the mechanism remains uncertain.
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Affiliation(s)
- Tatiana N Demidova-Rice
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
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Gonçalves WLS, Souza FM, Conti CL, Cirqueira JP, Rocha WA, Pires JGP, Barros LAP, Moysés MR. Influence of He-Ne laser therapy on the dynamics of wound healing in mice treated with anti-inflammatory drugs. Braz J Med Biol Res 2008; 40:877-84. [PMID: 17581688 DOI: 10.1590/s0100-879x2007000600018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Accepted: 03/07/2007] [Indexed: 12/13/2022] Open
Abstract
We determined the effects of helium-neon (He-Ne) laser irradiation on wound healing dynamics in mice treated with steroidal and non-steroidal anti-inflammatory agents. Male albino mice, 28-32 g, were randomized into 6 groups of 6 animals each: control (C), He-Ne laser (L), dexamethasone (D), D + L, celecoxib (X), and X + L. D and X were injected im at doses of 5 and 22 mg/kg, respectively, 24 h before the experiment. A 1-cm long surgical wound was made with a scalpel on the abdomens of the mice. Animals from groups L, D + L and X + L were exposed to 4 J (cm(2))-1 day-1 of He-Ne laser for 12 s and were sacrificed on days 1, 2, or 3 after the procedure, when skin samples were taken for histological examination. A significant increase of collagen synthesis was observed in group L compared with C (168 +/- 20 vs 63 +/- 8 mm(2)). The basal cellularity values on day 1 were: C = 763 +/- 47, L = 1116 +/- 85, D = 376 +/- 24, D + L = 698 +/- 31, X = 453 +/- 29, X + L = 639 +/- 32 U/mm(2). These data show that application of L increases while D and X decrease the inflammatory cellularity compared with C. They also show that L restores the diminished cellularity induced by the anti-inflammatory drugs. We suggest that He-Ne laser promotes collagen formation and restores the baseline cellularity after pharmacological inhibition, indicating new perspectives for laser therapy aiming to increase the healing process when anti-inflammatory drugs are used.
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Affiliation(s)
- W L S Gonçalves
- Departamento de Ciências Fisiológicas, Centro de Ciências da Saúde, Universidade Federal do Espírito Santo
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Bortone F, Santos HA, Albertini R, Pesquero JB, Costa MS, Silva JA. Low level laser therapy modulates kinin receptors mRNA expression in the subplantar muscle of rat paw subjected to carrageenan-induced inflammation. Int Immunopharmacol 2007; 8:206-10. [PMID: 18182228 DOI: 10.1016/j.intimp.2007.09.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2007] [Revised: 08/31/2007] [Accepted: 09/06/2007] [Indexed: 11/19/2022]
Abstract
Low level laser therapy (LLLT) has been used clinically in order to treat inflammatory processes. In this work, we evaluated if LLLT alters kinin receptors mRNA expression in the carrageenan-induced rat paw edema. Experimental groups were designed as followed: A1 (Control-saline), A2 (Carrageenan-only), A3 (Carrageenan+laser 660 nm) and A4 (Carrageenan+laser 684 nm). Edema was measured by a plethysmometer. Subplantar tissue was collected for kinin receptors mRNA quantification by Real time-PCR. LLLT of both 660 and 684 nm wavelengths administrated 1 h after carrageenan injection was able to promote the reduction of edema produced by carrageenan. In the A2 group, B1 receptor expression presented a significantly increase when compared to control group. Kinin B1 receptor mRNA expression significantly decreased after LLLT's 660 or 684 nm wavelength. Kinin B2 receptor mRNA expression also diminished after both laser irradiations. Our results suggest that expression of both kinin receptors is modulated by LLLT, possibly contributing to its anti-inflammatory effect.
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Affiliation(s)
- F Bortone
- Departamento de Ciências da Reabilitação, Centro Universitário Nove de Julho, UNINOVE. Rua Vergueiro, 235 Liberdade, CEP 01504001. São Paulo-SP, Brazil
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