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Yao M, Zhang YQ. [Clinical application of photobiomodulation in trauma repair and medical aesthetics]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:307-313. [PMID: 38664024 DOI: 10.3760/cma.j.cn501225-20240203-00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
In recent years, with the deepening of researches on the molecular biological mechanisms of photobiomodulation (PBM), PBM has gradually been applied in clinical practice, providing effective treatment methods and approaches for various diseases. Compared with traditional photothermal therapy, PBM has the characteristics of good therapeutic effect, almost no adverse reaction, and simple operation, and its clinical efficacy is becoming increasingly significant. This article provides a detailed explanation on the mechanism of PBM, its application characteristics and development trends in trauma repair and medical aesthetics, in order to provide a theoretical basis for the extensively clinical application of this therapy.
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Affiliation(s)
- M Yao
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Y Q Zhang
- Department of Plastic and Reconstructive Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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Sales AFS, Dos Santos Jorge Sousa K, de Souza A, Bonifacio M, Araújo TAT, de Almeida Cruz M, Costa MB, Ribeiro DA, Assis L, Martignago CCS, Rennó AC. Association of a Skin Dressing Made With the Organic Part of Marine Sponges and Photobiomodulation on the Wound Healing in an Animal Model. Mar Biotechnol (NY) 2024; 26:276-287. [PMID: 38441733 DOI: 10.1007/s10126-024-10295-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/02/2024] [Indexed: 04/25/2024]
Abstract
The present study aims to characterize and to evaluate the biological effects of a skin dressing manufactured with the organic part of the Chondrilla caribensis marine sponge (called spongin-like collagen (SC)) associated or not to photobiomodulation (PBM) on the skin wound healing of rats. Skin dressings were manufactured with SC and it was characterized using scanning electron microscopy (SEM) and a tensile assay. In order to evaluate its biological effects, an experimental model of cutaneous wounds was surgically performed. Eighteen rats were randomly distributed into three experimental groups: control group (CG): animals with skin wounds but without any treatment; marine collagen dressing group (DG): animals with skin wounds treated with marine collagen dressing; and the marine collagen dressing + PBM group (DPG): animals with skin wounds treated with marine collagen dressing and PBM. Histopathological, histomorphometric, and immunohistochemical evaluations (qualitative and semiquantitative) of COX2, TGFβ, FGF, and VEGF were done. SEM demonstrates that the marine collagen dressing presented pores and interconnected fibers and adequate mechanical strength. Furthermore, in the microscopic analysis, an incomplete reepithelialization and the presence of granulation tissue with inflammatory infiltrate were observed in all experimental groups. In addition, foreign body was identified in the DG and DPG. COX2, TGFβ, FGF, and VEGF immunostaining was observed predominantly in the wound area of all experimental groups, with a statistically significant difference for FGF immunostaining score of DPG in relation to CG. The marine collagen dressing presented adequate physical characteristics and its association with PBM presented favorable biological effects to the skin repair process.
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Affiliation(s)
- Abdias Fernando Simon Sales
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Karolyne Dos Santos Jorge Sousa
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Amanda de Souza
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Mirian Bonifacio
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Tiago Akira Tashiro Araújo
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Matheus de Almeida Cruz
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Márcia Busanello Costa
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Daniel Araki Ribeiro
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Lívia Assis
- Scientific Institute and Technological Department, University Brazil, São Paulo-Itaquera, SP, Brazil
| | - Cintia Cristina Santi Martignago
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil
| | - Ana Cláudia Rennó
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Lab 342, Rua Silva Jardim 136, Vila Matias, 136 Silva Jardim Street, Santos, SP, 11015020, Brazil.
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Torkaman G, Hoseini-Sanati M, Hedayati M, Mofid M, Iranparvar Alamdari M. Effects of Photobiomodulation Therapy on the Expression of Hypoxic Inducible Factor, Vascular Endothelial Growth Factor, and Its Specific Receptor: A Randomized Control Trial in Patients with Diabetic Foot Ulcer. Photobiomodul Photomed Laser Surg 2024; 42:275-284. [PMID: 38536106 DOI: 10.1089/photob.2023.0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
Abstract
Background: Impaired angiogenesis is a significant factor contributing to delayed healing in diabetic foot ulcers (DFUs) due to inadequate oxygenation. Objective: This study aimed to investigate the impact of photobiomodulation (PBM) using a Ga-As laser on the release of serum hypoxia-inducible factor 1-α (HIF-1α), vascular endothelial growth factor (VEGF), vascular endothelial growth factor receptor-2, and nitric oxide (NO) in diabetic patients with DFUs. Materials and methods: In this double-blind RCT, a total of 30 patients with grade II DFUs were enrolled. The patients were randomly divided into two groups: the PBM (n = 15) and the placebo (n = 15). In the PBM group, a Ga-As laser (904 nm, 2 J/cm2, 90 W) was given for 3 days/week for 4 weeks (11 sessions). In the placebo group, the power was turned off. Both groups received similar standard wound care. Before and after interventions, the levels of serum HIF-1α, VEGF, NO, and sVEGFR-2 were measured. In addition, the percentage decrease in the wound surface area (%DWSA) was measured. Results: Following the intervention, the results revealed that the PBM group had significantly lower levels of VEGF than the placebo group (p = 0.005). The %DWSA was significantly higher in the PBM group compared to the placebo group (p = 0.003). Moreover, VEGF showed a significant negative correlation with %DWSA (p < 0.001). Conclusions: The observed decrease in serum levels of VEGF and an increase in %DWSA, compared to the placebo group, suggests that PBM effectively improves angiogenesis. Furthermore, the significant correlation found between VEGF levels and %DWSA emphasizes the importance of evaluating wound surface in patients as a dependable indicator of enhanced wound angiogenesis. Clinical Trial Registration: NCT02452086.
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Affiliation(s)
- Giti Torkaman
- Physical Therapy Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mahsa Hoseini-Sanati
- Physical Therapy Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mehdi Hedayati
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Mofid
- School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
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Sharma AK, Kalonia A, Kumar R, Kirti, Shaw P, Yashvarddhan MH, Vibhuti A, Shukla SK. Alleviation of radiation combined skin injury in rat model by topical application of ascorbate formulation. Int J Radiat Biol 2024; 100:689-708. [PMID: 38306495 DOI: 10.1080/09553002.2024.2310016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 01/22/2024] [Indexed: 02/04/2024]
Abstract
PURPOSE This research endeavor was undertaken to elucidate the impact of an innovative ascorbate formulation on the regeneration process of full-thickness excision wounds in a rat model exposed to whole-body gamma irradiation, replicating conditions akin to combat or radiation emergency scenarios. MATERIALS AND METHODS We established a comprehensive rat model by optimizing whole body γ-radiation doses (5-9 Gy) and full-thickness excision wound sizes (1-3 cm2) to mimic radiation combined injury (RCI). The developed RCI model was used to explore the healing potential of ascorbate formulation. The study includes various treatment groups (i.e., sham control, radiation alone, wound alone, radiation + wound, and radiation + wound + formulation). The ascorbate formulation was applied twice daily, with a 12-hour gap between each application, starting 1 hour after the initiation of the wound. The healing potential of the formulation in the RCI context was evaluated over 14 days through hematological, molecular, and histological parameters. RESULTS The combination of a 5 Gy radiation dose and a 1 cm2 wound was identified as the optimal setting to develop the RCI model for subsequent studies. The formulation was used topically immediately following RCI, and then twice daily until complete healing. Treatment with the ascorbate formulation yielded noteworthy outcomes and led to a substantial reduction (p < .05) in the wound area, accelerated epithelialization periods, and an increased wound contraction rate. The formulation's localized healing response improved organ weights, normalized blood parameters, and enhanced hematopoietic and immune systems. A gene expression study revealed the treatment up-regulated TGF-β and FGF, and down-regulated PDGF-α, TNF-α, IL-1β, IL-6, MIP-1α, and MCP-1 (p < .05). Histopathological assessments supported the formulation's effectiveness in restoring cellular architecture and promoting tissue regeneration. CONCLUSION Topical application of the ascorbate formulation in RCI resulted in a significant improvement in delayed wound healing, leading to accelerated wound closure by mitigating the expression of inflammatory responses.
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Affiliation(s)
- Ajay Kumar Sharma
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - Aman Kalonia
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - Rishav Kumar
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - Kirti
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - Priyanka Shaw
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - M H Yashvarddhan
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
| | - Arpana Vibhuti
- Department of Biotechnology, SRM University, Sonipat, Haryana, India
| | - Sandeep Kumar Shukla
- Defence Research and Development Organization, Institute of Nuclear Medicine and Allied Sciences, Timarpur, New Delhi, India
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Ribeiro M, Santos KC, Macedo MR, de Souza GA, Neto FIDA, Araujo GHM, Cavalcante DR, Costa FF, de Sá Ferreira G, Peixoto LA, de Miranda Moraes J, Vulcani VAS. Use of adipose derived stem cells accelerates the healing process in third-degree burns. Burns 2024; 50:132-145. [PMID: 37741785 DOI: 10.1016/j.burns.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/25/2023] [Accepted: 08/20/2023] [Indexed: 09/25/2023]
Abstract
INTRODUCTION Burns are defined as a traumatic injury, usually of thermal origin, that affects the epithelial and adjacent tissue and is classified according to the depth reached. Tissue repair involved in this type of injury is often a challenge both due to its severity and the multiplicity of complications. Regenerative medicine has focused on the use of low-level laser photobiomodulation therapy (LLLT) and adipose-derived stem cells (ADSC), especially in the early stages of the process, to promote better healing and shorten repair time. Therefore, aim of this study was to evaluate the action of LLLT (660 nm) and ADSC in the repair process of burned skin tissue and investigate the association of the techniques (LLLT and ADSC). MATERIALS AND METHODS An in vivo study was carried out using 96 rats (Wister) with a scald burn model at a temperature of 95ºC, exposing the animal's back for 14 s. Animals were randomized into seven groups and three periods, five, 14 and 21 days. The groups included GC: Control group, ADSC-: Group treated with CD49d negative cells, ADSC+ : Group treated with positive CD49d cells, CULT: Group treated with conventional isolation cells, LLLT: Group treated only with LLLT Low Power Laser, ADSC-LLLT: Group treated with CD49d negative cells and LLLT. ADSC+LLLT: Group treated with positive CD49d cells and LLLT. The groups treated with LLLT (660 nm; 5 J/cm2) received irradiation three times a week, on alternate days for five, 14 and 21 days, according to the time of biopsy. ADSC-treated groups received one to three applications of the cells in a total volume of 1000 μL starting soon after the surgical debridement of the burn. Photographic monitoring was carried out at 5, 14 and 21 days after the beginning of the experiment to assess the degree of lesion contraction. Macroscopic, morphometric and histopathological analyzes were performed. RESULTS We showed significant re-epithelialization as well as an improvement in the healing process in the ADSC+, LLLT and ADSC+LLLT groups. We observed effects in the reduction of the inflammatory phase, increase in angiogenesis, decrease in oedema, greater collagen deposition, and better organization of the extracellular matrix compared to the other treatments. Moreover, the immunomagnetic separation of ADSC cells through the expression of the CD49d protein proved to be a useful means to obtain a more homogeneous population of cells with a role in tissue regeneration compared to the ADSC- and CULT groups. CONCLUSION In conclusion, the association of ADSC+ with LLLT was effective in accelerating the burn repair process, stimulating cell proliferation and formation of more normal skin tissue.
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Affiliation(s)
- Maisa Ribeiro
- Medicine Course, University Center of Mineiros, Mineiros, Goiás, Brazil; School of Veterinary and Zootechnics, Federal University of Goiás, Goiânia, Goiás, Brazil.
| | | | - Mathias Rezende Macedo
- Medicine Course, Health Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
| | | | | | | | | | - Flavia Ferreira Costa
- Medicine Course, Health Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
| | - Gabriel de Sá Ferreira
- Medicine Course, Health Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
| | - Larissa Alves Peixoto
- Medicine Course, Health Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
| | - Júlia de Miranda Moraes
- Medicine Course, Health Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
| | - Valcinir Aloísio Scalla Vulcani
- School of Veterinary and Zootechnics, Federal University of Goiás, Goiânia, Goiás, Brazil; Veterinary Medicine Course, Agricultural Sciences Academic Unit, Federal University of Jataí, Jataí, Goiás, Brazil
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Lee YI, Lee SG, Ham S, Jung I, Suk J, Lee JH. Exploring the Safety and Efficacy of Organic Light-Emitting Diode in Skin Rejuvenation and Wound Healing. Yonsei Med J 2024; 65:98-107. [PMID: 38288650 PMCID: PMC10827635 DOI: 10.3349/ymj.2023.0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 09/11/2023] [Accepted: 10/16/2023] [Indexed: 02/01/2024] Open
Abstract
PURPOSE Photobiomodulation (PBM), encompassing low-energy laser treatment and light-emitting diode (LED) phototherapy, has demonstrated positive impacts on skin rejuvenation and wound healing. Organic light-emitting diodes (OLEDs) present a promising advancement as wearable light sources for PBM. However, the biological and biochemical substantiation of their skin rejuvenation and wound healing effects remains limited. This study aimed to ascertain the safety and efficacy of OLEDs as a next-generation PBM modality through comprehensive in vitro and in vivo investigations. MATERIALS AND METHODS Cell viability assays and human ex vivo skin analyses were performed after exposure to OLED and LED irradiation to examine their safety. Subsequent evaluations examined expression levels and wound healing effects in human dermal fibroblasts (HDFs) using quantitative reverse transcription-polymerase chain reaction, enzyme-linked immunosorbent assay, and wound healing assays post-irradiation. Additionally, an in vivo study was conducted using a ultra violet (UV)-irradiated animal skin model to explore the impact of OLED exposure on dermal collagen density and wrinkles, employing skin replica and tissue staining techniques. RESULTS OLED irradiation had no significant morphological effects on human skin tissue, but caused a considerably higher expression of collagen than the control and LED-treated groups. Moreover, OLED irradiation reduced the expression levels of matrix metalloproteinases (MMPs) more effectively than did LED on HDFs. OLED irradiation group in HDFs had significantly higher expression levels of growth factors compared to the control group, but similar to those in the LED irradiation group. In addition, OLED irradiation on photo-aged animal skin model resulted in increased collagen fiber density in the dermis while reducing ultra violet radiation-mediated skin wrinkles and roughness, as shown in the skin replica. CONCLUSION This study established comparable effectiveness between OLED and LED irradiation in upregulating collagen and growth factor expression levels while downregulating MMP levels in vitro. In the UV-irradiated animal skin model, OLED exposure post UV radiation correlated with reduced skin wrinkles and augmented dermal collagen density. Accelerated wound recovery and demonstrated safety further underscore OLEDs' potential as a future PBM modality alongside LEDs, offering promise in the realms of skin rejuvenation and wound healing.
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Affiliation(s)
- Young In Lee
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul, Korea
| | - Sang Gyu Lee
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seoyoon Ham
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Inhee Jung
- Global Medical Research Center, Seoul, Korea
| | - Jangmi Suk
- Global Medical Research Center, Seoul, Korea
| | - Ju Hee Lee
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
- Scar Laser and Plastic Surgery Center, Yonsei Cancer Hospital, Seoul, Korea.
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Wen J, Pan J, Ma J, Ge X, Xu Z, Wang X, Lv Z. Advances in far-infrared research: therapeutic mechanisms of disease and application in cancer detection. Lasers Med Sci 2024; 39:41. [PMID: 38240851 DOI: 10.1007/s10103-024-03994-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
Far infrared (FIR) irradiation is commonly used as a convenient, non-contact, non-invasive treatment for diseases such as myocardial ischemia, diabetes, and chronic kidney disease. In this review, we focus on reviewing the potential therapeutic mechanisms of FIR and its cutting-edge applications in cancer detection. Firstly, we searched the relevant literature in the last decade for systematic screening and briefly summarized the biophysical properties of FIR. We then focused on the possible mechanisms of FIR in wound healing, cardiovascular diseases, and other chronic diseases. In addition, we review recent applications of FIR in cancer detection, where Fourier transform infrared spectroscopy and infrared thermography provide additional diagnostic methods for the medical diagnosis of cancer. Finally, we conclude and look into the future development of FIR for disease treatment and cancer detection. As a high-frequency non-ionizing wave, FIR has the advantages of safety, convenience, and low cost. We hope that this review can provide biological information reference and relevant data support for those who are interested in FIR and related high-frequency non-ionizing waves, to promote the further application of FIR in the biomedical field.
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Affiliation(s)
- Jianming Wen
- College of Mathematical Medicine, Zhejiang Normal University, Jinhua, China
- The Institute of Precision Machinery and Smart Structure, College of Engineering, Zhejiang Normal University, Jinhua, China
| | - Junrun Pan
- College of Physics and Electronic Information Engineering, Zhejiang Normal University, Jinhua, China
| | - Jijie Ma
- The Institute of Precision Machinery and Smart Structure, College of Engineering, Zhejiang Normal University, Jinhua, China
| | - Xinyang Ge
- College of Mathematical Medicine, Zhejiang Normal University, Jinhua, China
| | - Zisheng Xu
- Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua, China
| | - Xiaolin Wang
- College of Mathematical Medicine, Zhejiang Normal University, Jinhua, China.
- Affiliated Dongyang Hospital of Wenzhou Medical University, Jinhua, China.
| | - Zhong Lv
- Affiliated Dongyang Hospital of Wenzhou Medical University, Jinhua, China.
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Denzinger M, Nüssler AK, Medved F, Krauß S, Daigeler A, Held M, Illg C. The Impact of Blue Light Irradiation on Keratinocytes in Vitro. Acta Dermatovenerol Croat 2023; 31:64-71. [PMID: 38006365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
BACKGROUND This study examined the effects of irradiation with blue light on HaCaT keratinocytes. As irradiation with blue light is known to be antimicrobial, it offers a promising alternative therapy for contaminated wounds. There is evidence that red light promotes wound healing, but the potential benefits of irradiation with blue light have not yet been adequately investigated. METHODS The rate of wound closure in sterile and contaminated cells was measured using an in vitro scratch assay wound-healing model. Additionally, cell viability after treatment was determined using a Sulforhodamine B (SRB) assay. RESULTS In both the sterile and contaminated groups, treated cells showed delayed wound closure when compared with cells not irradiated with blue light. Additionally, treatment with blue light resulted in poorer viability in the treatment groups. CONCLUSION Although irradiation with blue light may offer a promising alternative therapy for reducing bacterial colonization, our data indicate that re-epithelization may be negatively influenced by blue light. Further research is needed to clarify possible wound healing applications.
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Affiliation(s)
- Markus Denzinger
- Markus Denzinger, Department of Pediatric Surgery Klinik St. Hedwig, University Medical Center Regensburg, 93049 Regensburg, Germany;
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Giannakopoulos E, Katopodi A, Rallis M, Politopoulos K, Alexandratou E. The effects of low power laser light at 661 nm on wound healing in a scratch assay fibroblast model. Lasers Med Sci 2022; 38:27. [PMID: 36574084 PMCID: PMC9794538 DOI: 10.1007/s10103-022-03670-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 10/12/2022] [Indexed: 12/28/2022]
Abstract
Wound treatment, especially for chronic and infected wounds, has been a permanent socio-economical challenge. This study aimed to investigate the ability of red light at 661 nm to accelerate wound healing an in vitro wound model using 3T3 fibroblasts. The purpose is further specified in clarifying the mechanisms of wound closure by means of intracellular ROS production, proliferation and migration of cells, and cellular orientation. Illumination effects of red light from a diode laser (661 nm) at different doses on 3T3 cell viability was assessed via MTT assay and tested in a scratch wound model. Wound closure rates were calculated by image analysis at 0, 24, and 48 h after laser treatment. ROS production was monitored and quantified immediately and 24 h after the treatment by fluorescence microscopy. Cellular orientation was quantified by image analysis. No phototoxic energy doses used and increased cell viability in most of the groups. Scratch assay revealed an energy interval of 3 - 4.5 J/cm2 that promote higher wound healing rate 24 h post treatment. An increase in ROS production was also observed 24 h post irradiation higher in the group with the highest wound healing rate. Also, cellular orientation toward the margin of the wound was observed and quantified after irradiation. Low power laser light at 661 nm activated both the migration and proliferation in the in vitro model used, providing evidence that it could also accelerate wound healing in vivo. Also, ROS production and cellular orientation seem to play an important role in wound healing process.
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Affiliation(s)
- Efstathios Giannakopoulos
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece.
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupoli, Zografou Campus, 15771, Athens, Greece.
| | - Annita Katopodi
- Laboratory of Organic Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece
| | - Michail Rallis
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupoli, Zografou Campus, 15771, Athens, Greece
| | - Konstantinos Politopoulos
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece
| | - Eleni Alexandratou
- Laboratory of Biomedical Optics and Applied Biophysics, School of Electrical and Computer Engineering, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece
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Caliskan E, Botsali A. Combination of Full-Field and Fractional Erbium: YAG Laser for Nonhealing Wounds. Dermatol Surg 2022; 48:114-119. [PMID: 34772834 DOI: 10.1097/dss.0000000000003292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND To evaluate the outcomes of a heterogeneous group of patients with chronic ulcer receiving a combination regimen of full-field and fractional erbium-doped yttrium aluminum garnet (erbium: YAG) laser applications. METHODS Enrolled in this study were patients with chronic ulcer who had received at least 2 erbium: YAG laser sessions. Fractional applications followed the initial full-field application for debridement. The therapeutic outcomes were evaluated by serial photographs. The primary outcome measure was the proportion of patients achieving complete re-epithelialization at the first year. RESULTS Forty-three treatment regions from 23 patients between 40 and 90 years (F: M = 11:12; age: 60.3 ± 15.5 years, mean ± SD) were eligible. The ulcers' median duration was 24 months (min-max: 2-240 months). The median number of laser sessions was 5 (min-max: 2-12). Of arterial (n = 13), immunologic (n = 9), venous (n = 8), diabetic (n = 8), and mechanical ulcers (n = 5), the primary outcome measure was achieved in 69%, 77.7%, 75%, 88.8%, and 100% of the groups, respectively. CONCLUSION Full-field erbium: YAG laser applications preserve the vascular architecture and enable delicate debridement. Ongoing maintenance fractional laser sessions promote wound healing. Similar to the previous reports of erbium: YAG laser in venous and diabetic ulcers, arterial ulcers, and ulcers of immunologic origin demonstrated an objective treatment response along with different adjuvant approaches.
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Affiliation(s)
- Ercan Caliskan
- Both authors are affiliated with the Department of Dermatology, Gülhane Faculty of Medicine, University of Health Sciences, Keçiören, Turkey
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Adachi T, Zhao W, Minami K, Yokoyama Y, Okuzaki D, Kondo R, Takahashi Y, Tamari K, Seo Y, Isohashi F, Yamamoto H, Koizumi M, Ogawa K. Chk1 suppression leads to a reduction in the enhanced radiation-induced invasive capability on breast cancer cells. J Radiat Res 2021; 62:764-772. [PMID: 34124754 PMCID: PMC8438270 DOI: 10.1093/jrr/rrab049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/10/2021] [Indexed: 05/29/2023]
Abstract
Radiation therapy is generally effective for treating breast cancers. However, approximately 30% of patients with breast cancer experience occasional post-treatment local and distant metastasis. Low-dose (0.5 Gy) irradiation is a risk factor that promotes the invasiveness of breast cancers. Although an inhibitor of checkpoint kinase 1 (Chk1) suppresses the growth and motility of breast cancer cell lines, no study has investigated the effects of the combined use of a Chk1 inhibitor and radiation on cancer metastasis. Here, we addressed this question by treating the human breast cancer cell line MDA-MB-231 (in vitro) and mouse mammary tumor cell line 4 T1 (in vitro and in vivo) with γ-irradiation and the Chk1 inhibitor PD407824. Low-dose γ-irradiation promoted invasiveness, which was suppressed by PD407824. Comprehensive gene expression analysis revealed that low-dose γ-irradiation upregulated the mRNA and protein levels of S100A4, the both of which were downregulated by PD407824. We conclude that PD407824 suppresses the expression of S100A4. As the result, γ-irradiation-induced cell invasiveness were inhibited.
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MESH Headings
- Animals
- Breast Neoplasms/drug therapy
- Breast Neoplasms/pathology
- Carbazoles/pharmacology
- Carbazoles/therapeutic use
- Cell Line, Tumor
- Checkpoint Kinase 1/antagonists & inhibitors
- Checkpoint Kinase 1/physiology
- Dose-Response Relationship, Radiation
- Female
- Gamma Rays/adverse effects
- Humans
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Neoplasm Invasiveness/prevention & control
- Neoplasm Metastasis/prevention & control
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- RNA Interference
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- RNA, Neoplasm/biosynthesis
- RNA, Neoplasm/genetics
- RNA, Small Interfering/genetics
- S100 Calcium-Binding Protein A4/biosynthesis
- S100 Calcium-Binding Protein A4/genetics
- Wound Healing/drug effects
- Wound Healing/radiation effects
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Affiliation(s)
| | | | - Kazumasa Minami
- Corresponding author. Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka Suita, Osaka 565-0871, Japan. Tel: +81-6-6879-3482; Fax: +81-6-6879-3489; E-mail:
| | - Yuhki Yokoyama
- Department of Molecular Pathology, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University Graduate School of Medicine, 3 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Rika Kondo
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yutaka Takahashi
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Keisuke Tamari
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuji Seo
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Fumiaki Isohashi
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hirofumi Yamamoto
- Department of Molecular Pathology, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masahiko Koizumi
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazuhiko Ogawa
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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12
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Santos CMD, Rocha RBD, Hazime FA, Cardoso VS. A Systematic Review and Meta-Analysis of the Effects of Low-Level Laser Therapy in the Treatment of Diabetic Foot Ulcers. INT J LOW EXTR WOUND 2021; 20:198-207. [PMID: 32394760 DOI: 10.1177/1534734620914439] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Diabetic foot ulcers (DFUs) are considered one of the most aggressive and expensive complications of diabetes. Low-level laser therapy (LLLT) has been highlighted as a potential modality of treatment to accelerate the healing of ulcers. This systematic review and meta-analysis aimed to investigate the efficacy of LLLT in the treatment of DFU and identify the LLLT application parameters recommended for the treatment of DFU over the past 10 years. A systematic search was conducted in PubMed, BVS, PEDro, Scopus, Web of Science, and CINAHL up to March 31, 2019. Following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines, randomized controlled trials (RCTs) that assessed the effect of LLLT on the treatment of DFU were included. Thirteen RCTs with a total of 361 participants were included in this review. Three RCTs reported a reduction in the percentage size of the ulcers and were included in the meta-analysis. The meta-analysis of the percentage size difference demonstrated a significant reduction in ulcer size in the LLLT group compared with controls (22.96 [95% confidence interval = 18.22-27.69; z = 9.51, P < .0001]). Treatment with 632.8 to 685 nm, 50 mW/cm2, 3 to 6 J/cm2, and irradiation for 30 to 80 seconds, 3 times weekly for a month is of benefit to patients with DFU. LLLT is effective and safe for the treatment of DFU. Additionally, well-designed, high-quality studies are needed to allow its ideal parameterization for clinical practice.
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13
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Holsapple JS, Cooper B, Berry SH, Staniszewska A, Dickson BM, Taylor JA, Bachoo P, Wilson HM. Low Intensity Shockwave Treatment Modulates Macrophage Functions Beneficial to Healing Chronic Wounds. Int J Mol Sci 2021; 22:ijms22157844. [PMID: 34360610 PMCID: PMC8346032 DOI: 10.3390/ijms22157844] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 12/21/2022] Open
Abstract
Extracorporeal Shock Wave Therapy (ESWT) is used clinically in various disorders including chronic wounds for its pro-angiogenic, proliferative, and anti-inflammatory effects. However, the underlying cellular and molecular mechanisms driving therapeutic effects are not well characterized. Macrophages play a key role in all aspects of healing and their dysfunction results in failure to resolve chronic wounds. We investigated the role of ESWT on macrophage activity in chronic wound punch biopsies from patients with non-healing venous ulcers prior to, and two weeks post-ESWT, and in macrophage cultures treated with clinical shockwave intensities (150–500 impulses, 5 Hz, 0.1 mJ/mm2). Using wound area measurements and histological/immunohistochemical analysis of wound biopsies, we show ESWT enhanced healing of chronic ulcers associated with improved wound angiogenesis (CD31 staining), significantly decreased CD68-positive macrophages per biopsy area and generally increased macrophage activation. Shockwave treatment of macrophages in culture significantly boosted uptake of apoptotic cells, healing-associated cytokine and growth factor gene expressions and modulated macrophage morphology suggestive of macrophage activation, all of which contribute to wound resolution. Macrophage ERK activity was enhanced, suggesting one mechanotransduction pathway driving events. Collectively, these in vitro and in vivo findings reveal shockwaves as important regulators of macrophage functions linked with wound healing. This immunomodulation represents an underappreciated role of clinically applied shockwaves, which could be exploited for other macrophage-mediated disorders.
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Affiliation(s)
- Jason S. Holsapple
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
| | - Ben Cooper
- Department of Vascular Surgery, NHS Grampian, Foresterhill Road, Aberdeen AB25 2ZN, UK; (B.C.); (P.B.)
| | - Susan H. Berry
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
| | - Aleksandra Staniszewska
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
| | - Bruce M. Dickson
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
| | - Julie A. Taylor
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
| | - Paul Bachoo
- Department of Vascular Surgery, NHS Grampian, Foresterhill Road, Aberdeen AB25 2ZN, UK; (B.C.); (P.B.)
| | - Heather M. Wilson
- School of Medicine, Medical Sciences & Dentistry, Institute of Medical Sciences, University of Aberdeen, Foresterhill Road, Aberdeen AB25 2ZD, UK; (J.S.H.); (A.S.); (S.H.B.); (B.M.D.); (J.A.T.)
- Correspondence:
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14
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Sahu S, Sridhar D, Abnave P, Kosaka N, Dattani A, Thompson JM, Hill MA, Aboobaker A. Ongoing repair of migration-coupled DNA damage allows planarian adult stem cells to reach wound sites. eLife 2021; 10:e63779. [PMID: 33890575 PMCID: PMC8104965 DOI: 10.7554/elife.63779] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/22/2021] [Indexed: 12/21/2022] Open
Abstract
Mechanical stress during cell migration may be a previously unappreciated source of genome instability, but the extent to which this happens in any animal in vivo remains unknown. We consider an in vivo system where the adult stem cells of planarian flatworms are required to migrate to a distal wound site. We observe a relationship between adult stem cell migration and ongoing DNA damage and repair during tissue regeneration. Migrating planarian stem cells undergo changes in nuclear shape and exhibit increased levels of DNA damage. Increased DNA damage levels reduce once stem cells reach the wound site. Stem cells in which DNA damage is induced prior to wounding take longer to initiate migration and migrating stem cell populations are more sensitive to further DNA damage than stationary stem cells. RNAi-mediated knockdown of DNA repair pathway components blocks normal stem cell migration, confirming that active DNA repair pathways are required to allow successful migration to a distal wound site. Together these findings provide evidence that levels of migration-coupled-DNA-damage are significant in adult stem cells and that ongoing migration requires DNA repair mechanisms. Our findings reveal that migration of normal stem cells in vivo represents an unappreciated source of damage, which could be a significant source of mutations in animals during development or during long-term tissue homeostasis.
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Affiliation(s)
- Sounak Sahu
- Department of Zoology, University of OxfordOxfordUnited Kingdom
| | - Divya Sridhar
- Department of Zoology, University of OxfordOxfordUnited Kingdom
| | - Prasad Abnave
- Department of Zoology, University of OxfordOxfordUnited Kingdom
| | | | - Anish Dattani
- Department of Zoology, University of OxfordOxfordUnited Kingdom
| | - James M Thompson
- CRUK/MRC Oxford Institute for Radiation Oncology, ORCRB Roosevelt Drive, University of OxfordOxfordUnited Kingdom
| | - Mark A Hill
- CRUK/MRC Oxford Institute for Radiation Oncology, ORCRB Roosevelt Drive, University of OxfordOxfordUnited Kingdom
| | - Aziz Aboobaker
- Department of Zoology, University of OxfordOxfordUnited Kingdom
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15
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Soleimani H, Amini A, Abdollahifar MA, Norouzian M, Kouhkheil R, Mostafavinia A, Ghoreishi SK, Bayat S, Chien S, Bayat M. Combined effects of photobiomodulation and curcumin on mast cells and wound strength in wound healing of streptozotocin-induced diabetes in rats. Lasers Med Sci 2021; 36:375-386. [PMID: 32696423 DOI: 10.1007/s10103-020-03053-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 06/02/2020] [Indexed: 12/24/2022]
Abstract
We investigated the probable involvement of mast cell degranulation and their numbers in the remodeling step of wound healing in a diabetic ischemic skin wound model treated with photobiomodulation plus curcumin. A total of 108 adult male Wistar rats were randomized into one healthy control and five diabetic groups. Type I diabetes was inflicted in 90 of the 108 rats. After 1 month, an excisional wound was generated in each of the 108 rats. There were one healthy group (group 1) and five diabetic groups as follows: group 2 was the untreated diabetic control group and group 3 rats were treated with sesame oil. Rats in group 4 were treated with photobiomodulation (890 nm, 890 ± 10 nm, 80 Hz, 0.2 J/cm2) and those in group 5 received curcumin dissolved in sesame oil. Group 6 rats were treated with photobiomodulation and curcumin. We conducted stereological and tensiometric tests on days 4, 7, and 15 after treatment. The results indicated that photobiomodulation significantly improved wound strength in the diabetic rats and significantly decreased the total numbers of mast cells. The diabetic control group had significantly reduced tensiometric properties of the healing wounds and a significant increase in the total numbers of mast cells. Photobiomodulation significantly improved the healing process in diabetic animals and significantly decreased the total number of mast cells. The increased numbers of mast cells in the diabetic control group negatively affected tensiometric properties of the ischemic skin wound.
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Affiliation(s)
- Hasan Soleimani
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abdollah Amini
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Norouzian
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Kouhkheil
- Department of Anatomical Sciences, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Atarodsadat Mostafavinia
- Department of Anatomy, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Sahar Bayat
- Illinois Institute of Technology, Chicago, IL, USA
| | - Sufan Chien
- Price Institute of Surgical Research, University of Louisville, Louisville, KY, USA.
- Noveratech LLC of Louisville, Louisville, KY, USA.
| | - Mohammad Bayat
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Price Institute of Surgical Research, University of Louisville, Louisville, KY, USA.
- Noveratech LLC of Louisville, Louisville, KY, USA.
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16
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de Lucas B, Pérez LM, Bernal A, Gálvez BG. Application of low-intensity pulsed therapeutic ultrasound on mesenchymal precursors does not affect their cell properties. PLoS One 2021; 16:e0246261. [PMID: 33571276 PMCID: PMC7877602 DOI: 10.1371/journal.pone.0246261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 01/15/2021] [Indexed: 12/13/2022] Open
Abstract
Ultrasound is considered a safe and non-invasive tool in regenerative medicine and has been used in the clinic for more than twenty years for applications in bone healing after the approval of the Exogen device, also known as low-intensity pulsed ultrasound (LIPUS). Beyond its effects on bone health, LIPUS has also been investigated for wound healing of soft tissues, with positive results for various cell processes including cell proliferation, migration and angiogenesis. As LIPUS has the potential to treat chronic skin wounds, we sought to evaluate the effects produced by a conventional therapeutic ultrasound device at low intensities (also considered LIPUS) on the migration capacity of mouse and human skin mesenchymal precursors (s-MPs). Cells were stimulated for 3 days (20 minutes per day) using a traditional ultrasound device with the following parameters: 100 mW/cm2 with 20% duty cycle and frequency of 3 MHz. At the parameters used, ultrasound failed to affect s-MP proliferation, with no evident changes in morphology or cell groupings, and no changes at the cytoskeletal level. Further, the migration and invasion ability of s-MPs were unaffected by the ultrasound protocol, and no major changes were detected in the gene/protein expression of ROCK1, integrin β1, laminin β1, type I collagen and transforming growth factor β1. Finally, RNA-seq analysis revealed that only 10 genes were differentially expressed after ultrasound stimulation. Among them, 5 encode for small nuclear RNAs and 2 encode for proteins belonging to the nuclear pore complex. Considering the results overall, while the viability of s-MPs was not affected by ultrasound stimulation and no changes were detected in proliferation/migration, RNA-seq analysis would suggest that s-MPs do respond to ultrasound. The use of 100 mW/cm2 intensity or conventional therapeutic ultrasound devices might not be optimal for the stimulation the properties of cell populations. Future studies should investigate the potential application of ultrasound using variations of the tested parameters.
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Affiliation(s)
- Beatriz de Lucas
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid, Spain
| | - Laura M. Pérez
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid, Spain
| | - Aurora Bernal
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Beatriz G. Gálvez
- Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid, Spain
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17
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Weigelt MA, McNamara SA, Sanchez D, Hirt PA, Kirsner RS. Evidence-Based Review of Antibiofilm Agents for Wound Care. Adv Wound Care (New Rochelle) 2021; 10:13-23. [PMID: 32496980 PMCID: PMC7698998 DOI: 10.1089/wound.2020.1193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/14/2020] [Indexed: 02/06/2023] Open
Abstract
Significance: Biofilms in vivo are small densely packed aggregations of microbes that are highly resistant to host immune responses and treatment. They attach to each other and to nearby surfaces. Biofilms are difficult to study and identify in a clinical setting as their quantification necessitates the use of advanced microscopy techniques such as confocal laser scanning microscopy. Nonetheless, it is likely that biofilms contribute to the pathophysiology of chronic skin wounds. Reducing, removing, or preventing biofilms is thus a logical approach to help clinicians heal chronic wounds. Recent Advances: Wound care products have demonstrated varying degrees of efficacy in destroying biofilms in in vitro and preclinical models, as well as in some clinical studies. Critical Issues: Controlled studies exploring the beneficial role of biofilm eradication and its relationship to healing in patients with chronic wounds are limited. This review aims to discuss the mode of action and clinical significance of currently available antibiofilm products, including surfactants, dressings, and others, with a focus on levels of evidence for efficacy in disrupting biofilms and ability to improve wound healing outcomes. Future Directions: Few available products have good evidence to support antibiofilm activity and wound healing benefits. Novel therapeutic strategies are on the horizon. More high-quality clinical studies are needed. The development of noninvasive techniques to quantify biofilms will facilitate increased ease of research about biofilms in wounds and how to combat them.
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Affiliation(s)
- Maximillian A. Weigelt
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Stephanie A. McNamara
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Daniela Sanchez
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - Penelope A. Hirt
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Robert S. Kirsner
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
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18
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Brugger MS, Baumgartner K, Mauritz SCF, Gerlach SC, Röder F, Schlosser C, Fluhrer R, Wixforth A, Westerhausen C. Vibration enhanced cell growth induced by surface acoustic waves as in vitro wound-healing model. Proc Natl Acad Sci U S A 2020; 117:31603-31613. [PMID: 33257581 PMCID: PMC7749343 DOI: 10.1073/pnas.2005203117] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
We report on in vitro wound-healing and cell-growth studies under the influence of radio-frequency (rf) cell stimuli. These stimuli are supplied either by piezoactive surface acoustic waves (SAWs) or by microelectrode-generated electric fields, both at frequencies around 100 MHz. Employing live-cell imaging, we studied the time- and power-dependent healing of artificial wounds on a piezoelectric chip for different cell lines. If the cell stimulation is mediated by piezomechanical SAWs, we observe a pronounced, significant maximum of the cell-growth rate at a specific SAW amplitude, resulting in an increase of the wound-healing speed of up to 135 ± 85% as compared to an internal reference. In contrast, cells being stimulated only by electrical fields of the same magnitude as the ones exposed to SAWs exhibit no significant effect. In this study, we investigate this effect for different wavelengths, amplitude modulation of the applied electrical rf signal, and different wave modes. Furthermore, to obtain insight into the biological response to the stimulus, we also determined both the cell-proliferation rate and the cellular stress levels. While the proliferation rate is significantly increased for a wide power range, cell stress remains low and within the normal range. Our findings demonstrate that SAW-based vibrational cell stimulation bears the potential for an alternative method to conventional ultrasound treatment, overcoming some of its limitations.
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Affiliation(s)
- Manuel S Brugger
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
- Stiftung der Deutschen Wirtschaft gGmbH, 10178 Berlin, Germany
| | - Kathrin Baumgartner
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
- Studienstiftung des deutschen Volkes e.V., 53175 Bonn, Germany
| | - Sophie C F Mauritz
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
| | - Stefan C Gerlach
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
- Hans-Seidel-Stiftung e.V., 80636 Munich, Germany
| | - Florian Röder
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
| | - Christine Schlosser
- Biochemistry and Molecular Biology, Institute of Theoretical Medicine, University of Augsburg, 86159 Augsburg, Germany
| | - Regina Fluhrer
- Biochemistry and Molecular Biology, Institute of Theoretical Medicine, University of Augsburg, 86159 Augsburg, Germany
- German Center for Neurodegenerative Diseases (DZNE) e.V., 81377 Munich, Germany
| | - Achim Wixforth
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
- Center for NanoScience, 80799 Munich, Germany
| | - Christoph Westerhausen
- Experimental Physics I, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany;
- Center for NanoScience, 80799 Munich, Germany
- Physiology, Institute of Theoretical Medicine, University of Augsburg, 86159 Augsburg, Germany
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19
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Mehrabi JN, Kelly KM. Ablative Fractional Resurfacing for Chronic Wounds from Traumatic Scarring: A Case Report and Literature Review. J Drugs Dermatol 2020; 19:1112-1115. [PMID: 33196743 DOI: 10.36849/jdd.2020.5444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Ablative fractional resurfacing (AFR) can be utilized to improve scar appearance, texture, pain and associated contractures. Non-healing ulcers can also develop in areas of scarring and, in some cases, AFR can be utilized to heal these chronic wounds. We present a case of scarring with non-healing ulceration refractory to wound care, debridement and hydrotherapy successfully healed in four sessions with AFR using a 2940 nm Er:YAG laser. We review the literature on AFR for wound healing including potential mechanisms. AFR can be considered for non-healing ulcers in areas of scarring, once malignancy and infection are ruled out, and has the potential to provide relief for these suffering patients.J Drugs Dermatol. 2020;19(11): doi:10.36849/JDD.2020.5444.
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20
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Khosravipour A, Amini A, Masteri Farahani R, Zare F, Mostafavinia A, Fallahnezhad S, Akbarzade S, Asgari M, Mohammadbeigi A, Rezaei F, Ghoreishi SK, Chien S, Bayat M. Preconditioning adipose-derived stem cells with photobiomodulation significantly increased bone healing in a critical size femoral defect in rats. Biochem Biophys Res Commun 2020; 531:105-111. [PMID: 32778332 DOI: 10.1016/j.bbrc.2020.07.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/12/2020] [Indexed: 12/23/2022]
Abstract
We assessed the combined impacts of human demineralized bone matrix (hDBM) scaffold, adipose-derived stem cells (hADS), and photobiomodulation (PBM) on bone repair of a critical size femoral defect (CSFD) in 72 rats. The rats were divided into six groups: control (group 1); ADS (group 2 - ADS transplanted into hDBM); PBM (group 3 - PBM-treated CSFDs); ADS + PBM in vivo (group 4 - ADS transplanted into hDBM and the CSFDs were treated with PBM in vivo); ADS + PBM in vitro (group 5 - ADS were treated with PBM in vitro, then seeded into hDBM); and ADS + PBM in vitro+in vivo (group 6 - PBM-treated ADS were seeded into hDBM, and the CSFDs were treated with PBM in vivo. At the anabolic phase (2 weeks after surgery), bone strength parameters of the groups 5, 6, and 4 were statistically greater than the control, ADS, and PBM in vivo groups (all, p = 0.000). Computed tomography (CT) scans during the catabolic phase (6 weeks after surgery) of bone healing revealed that the Hounsfield unit (HU) of CSFD in the groups 2 (p = 0.000) and 5 (p = 0.019) groups were statistically greater than the control group. The groups 5, 4, and 6 had significantly increased bone strength parameters compared with the PBM in vivo, control, and ADS groups (all, p = 0.000). The group 5 was statistically better than the groups 4, and 6 (both, p = 0.000). In vitro preconditioned of hADS with PBM significantly increased bone repair in a rat model of CSFD in vivo.
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Affiliation(s)
- Armin Khosravipour
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abdollah Amini
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Reza Masteri Farahani
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Fatemeh Zare
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Atarodsadat Mostafavinia
- Department of Anatomy, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Somaye Fallahnezhad
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Saman Akbarzade
- Department of Anatomy, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mehrdad Asgari
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Ahmad Mohammadbeigi
- Department of Radiology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Fatemehsadat Rezaei
- University of Kentucky College of Pharmacy 789 South Limestone Lexington, Kentucky, 40536, USA.
| | | | - Sufan Chien
- Price Institute of Surgical Research, University of Louisville, and Noveratech LLC, Louisville, KY, USA.
| | - Mohammad Bayat
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Price Institute of Surgical Research, University of Louisville, and Noveratech LLC, Louisville, KY, USA.
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21
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Vinhas A, Almeida AF, Gonçalves AI, Rodrigues MT, Gomes ME. Magnetic Stimulation Drives Macrophage Polarization in Cell to-Cell Communication with IL-1β Primed Tendon Cells. Int J Mol Sci 2020; 21:E5441. [PMID: 32751697 PMCID: PMC7432806 DOI: 10.3390/ijms21155441] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 01/13/2023] Open
Abstract
Inflammation is part of the natural healing response, but it has been simultaneously associated with tendon disorders, as persistent inflammatory events contribute to physiological changes that compromise tendon functions. The cellular interactions within a niche are extremely important for healing. While human tendon cells (hTDCs) are responsible for the maintenance of tendon matrix and turnover, macrophages regulate healing switching their functional phenotype to environmental stimuli. Thus, insights on the hTDCs and macrophages interactions can provide fundamental contributions on tendon repair mechanisms and on the inflammatory inputs in tendon disorders. We explored the crosstalk between macrophages and hTDCs using co-culture approaches in which hTDCs were previously stimulated with IL-1β. The potential modulatory effect of the pulsed electromagnetic field (PEMF) in macrophage-hTDCs communication was also investigated using the magnetic parameters identified in a previous work. The PEMF influences a macrophage pro-regenerative phenotype and favors the synthesis of anti-inflammatory mediators. These outcomes observed in cell contact co-cultures may be mediated by FAK signaling. The impact of the PEMF overcomes the effect of IL-1β-treated-hTDCs, supporting PEMF immunomodulatory actions on macrophages. This work highlights the relevance of intercellular communication in tendon healing and the beneficial role of the PEMF in guiding inflammatory responses toward regenerative strategies.
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Affiliation(s)
- Adriana Vinhas
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; (A.V.); (A.F.A.); (A.I.G.); (M.T.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Ana F. Almeida
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; (A.V.); (A.F.A.); (A.I.G.); (M.T.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Ana I. Gonçalves
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; (A.V.); (A.F.A.); (A.I.G.); (M.T.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Márcia T. Rodrigues
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; (A.V.); (A.F.A.); (A.I.G.); (M.T.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
| | - Manuela E. Gomes
- 3B’s Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; (A.V.); (A.F.A.); (A.I.G.); (M.T.R.)
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Guimarães, Portugal
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Franchini V, Müller T, Haupt JM, Ostheim P, Majewski M, Lista F, Port M, Abend M. Characterization of Primary Human Dermal Fibroblasts to Ensure for Instance EMF Exposure Experiments under Comparable Cell Culture Condition. Health Phys 2020; 119:118-127. [PMID: 31934933 DOI: 10.1097/hp.0000000000001204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
HDFa (human dermal fibroblasts) are used as cellular models for EMF exposure. To ensure reproducible in vitro experiments, comparable proliferation and differentiation cell conditions must exist, and different donors, passage numbers, culture time, and growth media must be considered. In this study, the authors cultured fibroblasts in DMEM or 106 medium. Growth curves, vitality, morphology, and gene expression of genes coding for proliferation (PCNA, CDKN2A, CDKN1A, SFN), differentiation (PDGFRA, TGM2, ACTA2, PDPN, NTN1, MGP, PPP1R14), and SFN target genes (TP63, MMP1, MMP3) were examined in both media and passage numbers 3-4, 5-6 and >6. At passages 3-4, proliferating cells can be observed in both media. While cells cultured in DMEM proliferate over the passages, from passage 5, cells in 106 medium persisted around the seeded number. TGM2 down-regulation over all passages in both media and cells morphology suggest papillary-type fibroblasts. Downregulation of SFN (negative regulator of mitotic translation and cell differentiation) coincided with proliferating fibroblasts over all examined conditions. Downstream SFN target genes in proliferating cells appeared upregulated (TP63) and downregulated (MMP1/MMP3), suggestive for a status characterized by increased stemnesses (upregulated TP63) and wound healing capacity (downregulated MMP1, MMP3). Resting cells (SFN control values) were associated with control values of TP63 and MMP1/MMP3 expression, suggesting a reduced stemness and wound healing capacity. In conclusion, a set of markers related to proliferation (SFN), differentiation (TGM2), stemnesses (TP63), and wound healing (MMP1/MMP3) allow a culture characterization so that cells under two different conditions can be exposed, thus enabling reproducible EMF experiments or experiments with other exposures.
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Affiliation(s)
- Valeria Franchini
- Bundeswehr Institute of Radiobiology Munich, Neuherbergstr. 11, 80937 Munich, Germany
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Wang ZX, Kim SH. Effect of Photobiomodulation Therapy (660 nm) on Wound Healing of Rat Skin Infected by Staphylococcus. Photobiomodul Photomed Laser Surg 2020; 38:419-424. [PMID: 32466696 DOI: 10.1089/photob.2019.4754] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Objective: To assess the impact of photobiomodulation (PBM) therapy on healing of infected wounds and document the microscopic findings throughout the recovery process. Background: Previous studies have suggested that PBM accelerates wound healing and reduces inflammation and pain. However, the ideal protocol and ultimate value of PBM treatment for infected wounds are controversial. Materials and methods: Eight-month-old male rats were randomly divided into the control group, the nonirradiation group, or the irradiation group. A 1 cm diameter skin excision was made. The wounds of the nonirradiated and irradiated rats were inoculated with a suspension of Staphylococcus aureus. We then performed 7 days of PBM therapy at a wavelength of 660 nm for 35 min/day. On day 8, the rats were sacrificed for histological assessment. Sections were stained with hematoxylin and eosin, Masson trichrome, and a proliferating cell nuclear antigen (PCNA) kit. Defect diameter was calculated using the Visus Image Analysis System. Results: The irradiated group had more epithelial cells and richer granulation tissue compared to those in the other groups. The irradiation group had a significantly smaller defect size than the nonirradiation group (p < 0.01) and the control group (p < 0.05). The amount of collagen was highest in the irradiation group and was graded as 3, 2, and 3+ in the control, nonirradiation, and irradiation groups, respectively. The percentage of PCNA in the control group was significantly lower than that in the other two groups (p < 0.05). Conclusions: PBM therapy (660 nm) promoted cell proliferation and collagen synthesis, thereby improving the wound healing response to an S. aureus infection.
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Affiliation(s)
- Zi-Xuan Wang
- Department of Interventional Radiology, Qingdao Municipal Hospital, Qingdao, Shandong, P.R. China
- Department of Surgery, School of Medicine, Chosun University, Gwangju, Korea
| | - Seong-Hwan Kim
- Department of Surgery, School of Medicine, Chosun University, Gwangju, Korea
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Lou Z, Gong T, Kang J, Xue C, Ulmschneider C, Jiang JJ. The Effects of Photobiomodulation on Vocal Fold Wound Healing: In Vivo and In Vitro Studies. Photobiomodul Photomed Laser Surg 2020; 37:532-538. [PMID: 31503536 DOI: 10.1089/photob.2019.4641] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Background: Photobiomodulation (PBM) is increasingly used in dermatology and dentistry due to its benefit of promoting wound healing and relieving pain; however, there is no corresponding research report on the application of PBM to vocal fold wound healing. Objective: To assess the potential wound-healing effects of PBM on the vocal folds via in vivo and in vitro experiments. Materials and methods: In in vitro study, vocal fold fibroblasts (VFFs) were irradiated under a diode laser with wavelength of 635 nm at energy density of 8 J/cm2. The Cell Counting Kit-8 (CCK-8) assay was used to study the viability of VFFs, and the gene expressions of COL1A2, COL3A1, IL-6, HAS2, and COX-2 were investigated by real-time polymerase chain reaction (RT-PCR). In in vivo study, 15 rabbits were used. Lamina propria of the left vocal folds of 12 rabbits was unilaterally stripped, and 6 of them were treated with PBM. The remaining three rabbits served as normal controls. After 3 months, all animals were sacrificed to obtain histological results. We used laryngoscope to record images of the healing phase. Results: Irradiation with energy density of 8 J/cm2 resulted in a 2.8% increase in cell proliferation (p < 0.05). However, the difference between the experimental and the control group became larger after 48 and 72 h of subsequent irradiation. RT-PCR results showed that the expression of COL1A2, COL3A1, and HAS2 was higher, and the expression of IL-6 and COX-2 was lower. Histological examination showed that, compared with the injury group, hyaluronic acid (HA) increased significantly, collagen deposition decreased, and the configuration of collagen was more organized after PBM treatment. Conclusions: PBM can inhibit inflammatory reaction and promote the secretion of HA to decrease the deposition of collagen and regenerate vocal fold tissue without scar.
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Affiliation(s)
- Zhewei Lou
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China
| | - Ting Gong
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China
| | - Jing Kang
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China
| | - Chao Xue
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China
| | - Christopher Ulmschneider
- Division of Otolaryngology-Head and Neck Surgery, The Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jack J Jiang
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, China
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Braný D, Dvorská D, Halašová E, Škovierová H. Cold Atmospheric Plasma: A Powerful Tool for Modern Medicine. Int J Mol Sci 2020; 21:E2932. [PMID: 32331263 PMCID: PMC7215620 DOI: 10.3390/ijms21082932] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/20/2020] [Accepted: 04/20/2020] [Indexed: 12/15/2022] Open
Abstract
Cold atmospheric plasma use in clinical studies is mainly limited to the treatment of chronic wounds, but its application in a wide range of medical fields is now the goal of many analyses. It is therefore likely that its application spectrum will be expanded in the future. Cold atmospheric plasma has been shown to reduce microbial load without any known significant negative effects on healthy tissues, and this should enhance its possible application to any microbial infection site. It has also been shown to have anti-tumour effects. In addition, it acts proliferatively on stem cells and other cultivated cells, and the highly increased nitric oxide levels have a very important effect on this proliferation. Cold atmospheric plasma use may also have a beneficial effect on immunotherapy in cancer patients. Finally, it is possible that the use of plasma devices will not remain limited to surface structures, because current endeavours to develop sufficiently miniature microplasma devices could very likely lead to its application in subcutaneous and internal structures. This study summarises the available literature on cold plasma action mechanisms and analyses of its current in vivo and in vitro use, primarily in the fields of regenerative and dental medicine and oncology.
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Affiliation(s)
| | - Dana Dvorská
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, 036 01 Martin, Slovakia; (D.B.); (E.H.); (H.Š.)
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Kara N, Selamet H, Benkli YA, Beldüz M, Gökmenoğlu C, Kara C. Laser Therapy Induces Increased Viability and Proliferation in Isolated Fibroblast Cells. Wounds 2020; 32:69-73. [PMID: 32163042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Laser therapy (LT), which stimulates natural biological processes in the application region, is frequently used in dental treatments. OBJECTIVE The aim of this study is to evaluate the effects of LT that could increase wound healing on fibroblast cells in vitro. METHODS Twenty-four hours after preparing the fibroblast cell culture plates, laser irradiation was performed 1, 2, and 3 times according to the test groups using an Nd:YAG (neodymium-doped yttrium aluminum garnet) laser with a power output of 0.5 W, 1 W, 2 W, and 3 W. Cell proliferation analysis was performed by MTT (methylthiazole diphenyl tetrazolium) assay at the twenty-fourth hour following the last laser application. RESULTS In terms of the laser irradiation power level, the most proliferation was observed in 1 W and 2 W application groups. Although a statistically significant increase was observed, particularly at 0.5 W, the increase at 1 W was greater than at a power output of 0.5 W. In terms of the number of laser irradiation applications, the most proliferation was observed in 2 and 3 application groups. The highest proliferation value was obtained with 1 W of power for 2 applications, and the lowest was with 3 W of power for 3 applications. CONCLUSIONS The findings of this study show LT increased fibroblast cell proliferation, depending on the power output level of the laser and number of applications. In addition to the proliferation and mitotic activity of the fibroblast cells, the results demonstrate that LT could increase wound healing after oral surgery and periodontal treatments.
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Affiliation(s)
- Nihal Kara
- Department of Pedodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - Hilal Selamet
- Department of Periodontology, Faculty of Dentistry, Okan University, Istanbul, Turkey
| | - Yasin Atakan Benkli
- Department of Orthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - Meral Beldüz
- Department of Biology, Faculty of Science, Karadeniz Technical University, Trabzon, Turkey
| | - Ceren Gökmenoğlu
- Department of Periodontology, Faculty of Dentistry, Ordu University, Ordu, Turkey
| | - Cankat Kara
- Department of Periodontology, Faculty of Dentistry, Ordu University, Ordu, Turkey
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Hu S, Li Z, Cores J, Huang K, Su T, Dinh PU, Cheng K. Needle-Free Injection of Exosomes Derived from Human Dermal Fibroblast Spheroids Ameliorates Skin Photoaging. ACS Nano 2019; 13:11273-11282. [PMID: 31449388 PMCID: PMC7032013 DOI: 10.1021/acsnano.9b04384] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Human dermal fibroblasts (HDFs), the main cell population of the dermis, gradually lose their ability to produce collagen and renew intercellular matrix with aging. One clinical application for the autologous trans-dermis injection of HDFs that has been approved by the Food and Drug Administration aims to refine facial contours and slow down skin aging. However, the autologous HDFs used vary in quality according to the state of patients and due to many passages they undergo during expansion. In this study, factors and exosomes derived from three-dimensional spheroids (3D HDF-XOs) and the monolayer culture of HDFs (2D HDF-XOs) were collected and compared. 3D HDF-XOs expressed a significantly higher level of tissue inhibitor of metalloproteinases-1 (TIMP-1) and differentially expressed miRNA cargos compared with 2D HDF-XOs. Next, the efficacy of 3D HDF-XOs in inducing collagen synthesis and antiaging was demonstrated in vitro and in a nude mouse photoaging model. A needle-free injector was used to administer exosome treatments. 3D HDF-XOs caused increased procollagen type I expression and a significant decrease in MMP-1 expression, mainly through the downregulation of tumor necrosis factor-alpha (TNF-α) and the upregulation of transforming growth factor beta (TGF-β). In addition, the 3D-HDF-XOs group showed a higher level of dermal collagen deposition than bone marrow mesenchymal stem cell-derived exosomes. These results indicate that exosomes from 3D cultured HDF spheroids have anti-skin-aging properties and the potential to prevent and treat cutaneous aging.
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Affiliation(s)
- Shiqi Hu
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Zhenhua Li
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Jhon Cores
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Ke Huang
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
| | - Teng Su
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Phuong-Uyen Dinh
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Ke Cheng
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina 27607, United States
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States, and North Carolina State University, Raleigh, North Carolina 27606, United States
- Corresponding Author
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Zhang Y, Li D, Fang S, Li X, Zhang H, Dai H, Fan H, Li Y, Shen D, Tang W, Yang C, Xing X. Stimulatory effect of engineered three-layer adipose tissue-derived stem cells sheet in atelocollagen matrix on wound healing in a mouse model of radiation-induced skin injury. J Biomater Appl 2019; 34:498-508. [PMID: 31311392 DOI: 10.1177/0885328219862123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yuanzheng Zhang
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Dan Li
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Shuo Fang
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Xueyang Li
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Huojun Zhang
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Haiying Dai
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Hao Fan
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Yingli Li
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Di Shen
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Weiya Tang
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Chao Yang
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - Xin Xing
- Shanghai Changhai Hospital, The Second Military Medical University, Shanghai, China
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Pavone C, Scardueli CR, de Oliveira GJPL, Cerri PS, Marcantonio Junior E, Marcantonio RAC. Effects of an Er,Cr:YSGG Laser on Bone Regeneration in Critical-Sized Calvarial Defects of Rats Exposed to Inhalation of Cigarette Smoke. Photobiomodul Photomed Laser Surg 2019; 37:500-507. [PMID: 31268410 DOI: 10.1089/photob.2018.4546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Objective: To evaluate the effect of the Er,Cr:YSGG laser on healing of critical-sized calvarial defects (CSDs) in rats submitted to inhalation of cigarette smoke. Background: Smoking has been implicated with the delay in the bone healing after osteotomy procedures, then the use of the Er,Cr:YSGG laser for osteotomy in smokers could be an alternative to the conventional drills. Methods: One hundred animals were randomly allocated into four groups: trephine-the CSDs were made with a trephine drill in healthy rats; Er,Cr:YSGG-the CSDs were made with the Er,Cr:YSGG laser in healthy rats; Trephine-S-the CSDs were made with a trephine drill in rats exposed to cigarette smoke; and Er,Cr:YSGG-S-the CSDs were made with the Er,Cr:YSGG laser in rats exposed to cigarette smoke. The inhalation of cigarette smoke started 7 days before the surgical procedure until euthanasia (immediately, 7, 15, 30, or 60 days after the surgical procedure). A histometric analysis and a histological description were performed to evaluate (1) the residual linear lengths and bone formation in the CSDs; (2) the quality of bone healing. Results: The use of Er,Cr:YSGG laser induces more bone formation compared with the trephine in smokers; however, the closure of the CSD was only superior in the Er,Cr:YSGG-S group compared to the Trephine-S group at the 60-day period. Conclusions: The use of the Er,Cr:YSGG laser stimulated the bone repair process after osteotomy procedures in animals submitted to exposure of inhalation of cigarette smoke.
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Affiliation(s)
- Chaine Pavone
- 1School of Dentistry, Unicastelo, Descalvado, Brazil
| | - Cássio Rocha Scardueli
- 2Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sa∼o Paulo State University-Unesp, Araraquara, Brazil
| | | | - Paulo Sérgio Cerri
- 4Department of Pathology and Physiology, School of Dentistry at Araraquara, Sa∼o Paulo State University-Unesp, Araraquara, Brazil
| | - Elcio Marcantonio Junior
- 2Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sa∼o Paulo State University-Unesp, Araraquara, Brazil
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Yarboro D, Millar A, Smith R. The Effects of Ultraviolet C Irradiation in the Treatment of Chronic Wounds: A Retrospective, Descriptive Study. Wound Manag Prev 2019; 65:16-22. [PMID: 31373559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
UNLABELLED Although there is evidence supporting the bactericidal effects of ultraviolet C (UVC) in chronic wounds, clinical studies examining the effects of UVC on wound healing are limited. PURPOSE The objective of this single-center, retrospective, descriptive study was to evaluate the effect of UVC as an adjunct modality to standard wound care. METHODS Data from January 1, 2015, through August 30, 2015, from all patients receiving UVC treatment and wound etiology-appropriate standard care provided twice weekly at a wound care center and lymphedema clinic were extracted from the electronic health records. Demographic (age, gender) and clinical wound data (duration, type, initial and final dimensions, number of UVC treatments, time to healing, healed versus not healed, and adverse events) were extracted, deidentified, and analyzed using descriptive and chi-squared analysis and analysis of variance. Wound type categories with small sample sizes were combined for analysis. RESULTS Among the 127 patients studied (64 women [50.4%], average age 69 ± 15.0 years; and 63 men [49.6 %], average age 61 ± 15.8 years; P = .03), 224 wounds received UVC treatment. Initial average wound area was 24.1 ± 121.8 cm², and the most common type of wound was venous (58, 25.9%), followed by neuropathic/diabetic foot ulcer and traumatic wounds (43 each, 19.2% each). Mean wound duration was 57.7 ± 63 days; overall average patient age was 64.8 ± 15.9 years. Average number of treatments of 11.9 ± 13.4, and average time to healing was 45.2 ± 44.4 days. A total of 127 patients with 161 wounds (71.9%) healed after an average of 45 (range 4-260) days, including 36 venous leg ulcers (62.1%) and 33 neuropathic wounds/diabetic foot ulcers (76.7%). No adverse events were recorded. CONCLUSION UVC may be an effective adjuvant treatment modality when used with standard care in the treatment of chronic wounds. Prospective studies are needed to ascertain the effectiveness and efficacy of UVC in the treatment of chronic wounds.
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Affiliation(s)
| | | | - Robert Smith
- Northern Hospital of Surry County, Mount Airy, NC
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Gurin D, Sultan AA, Berkowitz M, Miniaci-Coxhead SL. Spontaneous Closed Rupture of Achilles Tendon Following Minimally Invasive Ultrasonic Energy Therapy: A Report of Two Cases. Surg Technol Int 2019; 34:483-487. [PMID: 30742702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This paper presents two patients who sustained spontaneous closed Achilles tendon ruptures following minimally invasive ultrasonic energy therapy for non-insertional Achilles tendinopathy. In both cases, the patients underwent minimally invasive ultrasonic energy therapy using a commercially available device. In addition, the current evidence, through available literature, has been reviewed and presented.
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Affiliation(s)
- Danielle Gurin
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Assem A Sultan
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Mark Berkowitz
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
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Abstract
Nanomaterials and nanotechnologies have been expected to provide innovative platforms for addressing antibacterial challenges, with potential to even deal with bacterial infections involving drug-resistance. The current review summarizes recent progress over the last 3 years in the field of antibacterial nanomaterials with a photothermal conversion effect. We classify these photothermal nanomaterials into four functional categories: carbon-based nanoconjugates of graphene derivatives or carbon nanotubes, noble metal nanomaterials mainly from gold and silver, metallic compound nanocomposites such as copper sulfide and molybdenum sulfide, and polymeric as well as other nanostructures. Different categories can be assembled with each other to enhance the photothermal effects and the antibacterial activities. The review describes their fabrication processes, unique properties, antibacterial modes, and potential healthcare applications.
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Affiliation(s)
- Jing-Wei Xu
- Eye Center, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China.
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Costantini E, Sinjari B, D'Angelo C, Murmura G, Reale M, Caputi S. Human Gingival Fibroblasts Exposed to Extremely Low-Frequency Electromagnetic Fields: In Vitro Model of Wound-Healing Improvement. Int J Mol Sci 2019; 20:ijms20092108. [PMID: 31035654 PMCID: PMC6540598 DOI: 10.3390/ijms20092108] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/23/2019] [Accepted: 04/25/2019] [Indexed: 01/24/2023] Open
Abstract
Several clinical studies have suggested the impact of sinusoidal and pulsed electromagnetic fields in quickening wound repair processes and tissue regeneration. The clinical use of extremely low-frequency electromagnetic fields could represent a novel frontier in tissue repair and oral health, with an interesting clinical perspective. The present study aimed to evaluate the effect of an extremely low-frequency sinusoidal electromagnetic field (SEMF) and an extremely low-frequency pulsed electromagnetic field (PEMF) with flux densities of 1 mT on a model of oral healing process using gingival fibroblasts. An in vitro mechanical injury was produced to evaluate wound healing, migration, viability, metabolism, and the expression of selected cytokines and protease genes in fibroblasts exposed to or not exposed to the SEMF and the PEMF. Interleukin 6 (IL-6), transforming growth factor beta 1 (TGF-β), metalloproteinase 2 (MMP-2), monocyte chemoattractant protein 1 (MCP-1), inducible nitric oxide synthase (iNOS), and heme oxygenase 1 (HO-1) are involved in wound healing and tissue regeneration, favoring fibroblast proliferation, chemotaxis, and activation. Our results show that the exposure to each type of electromagnetic field increases the early expression of IL-6, TGF-β, and iNOS, driving a shift from an inflammatory to a proliferative phase of wound repair. Additionally, a later induction of MMP-2, MCP-1, and HO-1 was observed after electromagnetic field exposure, which quickened the wound-healing process. Moreover, electromagnetic field exposure influenced the proliferation, migration, and metabolism of human gingival fibroblasts compared to sham-exposed cells. This study suggests that exposure to SEMF and PEMF could be an interesting new non-invasive treatment option for wound healing. However, additional studies are needed to elucidate the best exposure conditions to provide the desired in vivo treatment efficacy.
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Affiliation(s)
- Erica Costantini
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Bruna Sinjari
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Chiara D'Angelo
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Giovanna Murmura
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Marcella Reale
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Sergio Caputi
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
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de Miranda JR, Choi IGG, Moreira MS, Martins MD, Cortes ARG, Yoshimoto M. Histologic Evaluation of Early Bone Regeneration Treated with Simvastatin Associated with Low-Level Laser Therapy. Int J Oral Maxillofac Implants 2019; 34:658–664. [PMID: 30892287 DOI: 10.11607/jomi.6990] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE This histologic study aimed at assessing bone healing after treatment with simvastatin in association with low-level laser therapy (LLLT). METHODS Twenty-four male rats (Wistar) were submitted to surgery to create a bone defect of 5 mm in diameter in the parietal bone. These rats were randomly and equally divided into four treatment groups (n = 6): control (C), in which no treatment was performed; simvastatin (SIM), in which rats received daily subcutaneous doses of 2.5 mg/kg of simvastatin; LLLT, which was daily applied to the bone defect; and SIM-LLLT, in which both SIM and LLLT were daily applied. All laser irradiations were carried out with a 830-nm infrared diode laser (GaAlAs) with maximum output of 100 mW and a dose of 4 J, totaling 16 J per session. Rats were euthanized on the 12th postoperative day. Formalin-fixed paraffin-embedded bone samples were obtained and stained with hematoxylin-eosin (HE) and toluidine blue for optical microscope analysis. Degree of inflammation, new vascular formation, tissue repair, and osteoblastic activity were assessed. RESULTS Categorical analysis of the histologic slides revealed newly formed bone reaching the center of the surgical wound in two animals from the SIM group, two from the LLLT group, and three from the SIM-LLLT group. Greater new bone formation and a lower degree of inflammation were observed in the animals that had bone neoformation at the center of the defect, especially in the LLLT and SIM-LLLT groups. SIM and C groups presented greater angiogenesis than LLLT and SIM-LLLT. SIMLLLT therapy showed a statistically significant reduction in the degree of inflammation when compared to the control group (P < .05). CONCLUSION Within the limitations of this study, the present results suggest that a combination of simvastatin and low-level laser therapy may stimulate better bone formation.
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Kavyashree M, Harish PV, Mishra SK, Chowdhary R. Cell Phone Radiation Effect on Bone-to-Implant Osseointegration: A Preliminary Histologic Evaluation in Rabbits. Int J Oral Maxillofac Implants 2019; 34:643–650. [PMID: 30892289 DOI: 10.11607/jomi.7024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND AND PURPOSE The increased use of cell phones has raised many questions as to whether their use is safe for patients with dental implants. This study aimed to assess the consequences of cell phone-emitted radiation on bone-to-implant osseointegration during the healing phase. MATERIALS AND METHODS Twelve rabbits were grouped into three groups of four. Group 1 (control) was not exposed to electromagnetic radiation; group 2 (test) was exposed for 8 hours/day in speech mode and 16 hours/day in standby mode; and group 3 (test) was exposed for 24 hours continuously in standby mode for 3 months. Forty-eight implants were placed in tibia and femur bone of rabbits, and after 90 days the rabbits were sacrificed and bone surrounding the implant was retrieved. Histopathologic evaluations of the specimens were done using transmitted light microscope. The differences among the three groups were statistically analyzed with analysis of variance (ANOVA) and pairwise comparisons via Fisher's exact test. RESULTS Significantly less bone-to-implant contact and bone area surrounding implant threads were found in the test groups compared to the control group. There was a significant difference in regular bone formation (P < .001) among the three groups. CONCLUSION Implants exposed to cell phone radiation showed more inflammatory reaction when compared to the nonexposed implants, thus indicating that cellular phone overuse could affect the maturation of bone and thus delay osseointegration.
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Robertson AD, Chiaramonti AM, Nguyen TP, Jaffe DE, Holmes RE, Hanna EL, Rhee JG, Barfield WR, Fourney WB, Stains JP, Pellegrini VD. Failure of Indomethacin and Radiation to Prevent Blast-induced Heterotopic Ossification in a Sprague-Dawley Rat Model. Clin Orthop Relat Res 2019; 477:644-654. [PMID: 30601320 PMCID: PMC6382204 DOI: 10.1097/corr.0000000000000594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 11/13/2018] [Indexed: 01/31/2023]
Abstract
BACKGROUND Although use of nonsteroidal antiinflammatory drugs and low-dose irradiation has demonstrated efficacy in preventing heterotopic ossification (HO) after THA and surgical treatment of acetabular fractures, these modalities have not been assessed after traumatic blast amputations where HO is a common complication that can arise in the residual limb. QUESTIONS/PURPOSES The purpose of this study was to investigate the effectiveness of indomethacin and irradiation in preventing HO induced by high-energy blast trauma in a rat model. METHODS Thirty-six Sprague-Dawley rats underwent hind limb blast amputation with a submerged explosive under water followed by irrigation and primary wound closure. One group (n = 12) received oral indomethacin for 10 days starting on postoperative Day 1. Another group (n = 12) received a single dose of 8 Gy irradiation to the residual limb on postoperative Day 3. A control group (n = 12) did not receive either. Wound healing and clinical course were monitored in all animals until euthanasia at 24 weeks. Serial radiographs were taken immediately postoperatively, at 10 days, and every 4 weeks thereafter to monitor the time course of ectopic bone formation until euthanasia. Five independent graders evaluated the 24-week radiographs to quantitatively assess severity and qualitatively assess the pattern of HO using a modified Potter scale from 0 to 3. Assessment of grading reproducibility yielded a Fleiss statistic of 0.41 and 0.37 for severity and type, respectively. By extrapolation from human clinical trials, a minimum clinically important difference in HO severity was empirically determined to be two full grades or progression of absolute grade to the most severe. RESULTS We found no differences in mean HO severity scores among the three study groups (indomethacin 0.90 ± 0.46 [95% confidence interval {CI}, 0.60-1.19]; radiation 1.34 ± 0.59 [95% CI, 0.95-1.74]; control 0.95 ± 0.55 [95% CI, 0.60-1.30]; p = 0.100). For qualitative HO type scores, the radiation group had a higher HO type than both indomethacin and controls, but indomethacin was no different than controls (indomethacin 1.08 ± 0.66 [95% CI, 0.67-1.50]; radiation 1.89 ± 0.76 [95% CI, 1.38-2.40]; control 1.10 ± 0.62 [95% CI, 0.70-1.50]; p = 0.013). The lower bound of the 95% CI on mean severity in the indomethacin group and the upper bound of the radiation group barely spanned a full grade and involved only numeric grades < 2, suggesting that even if a small difference in severity could be detected, it would be less than our a priori-defined minimum clinically important difference and any differences that might be present are unlikely to be clinically meaningful. CONCLUSIONS This work unexpectedly demonstrated that, compared with controls, indomethacin and irradiation provide no effective prophylaxis against HO in the residual limb after high-energy blast amputation in a rat model. Such an observation is contrary to the civilian experience and may be potentially explained by either a different pathogenesis for blast-induced HO or a stimulus that overwhelms conventional regimens used to prevent HO in the civilian population. CLINICAL RELEVANCE HO in the residual limb after high-energy traumatic blast amputation will likely require novel approaches for prevention and management.
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Affiliation(s)
- Astor D Robertson
- A. D. Robertson, T. P. Nguyen, D. E. Jaffe, J. P. Stains, Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA A. M. Chiaramonti, R. E. Holmes, E. L. Hanna, W. R. Barfield, V. D. Pellegrini, Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC, USA J. G. Rhee, Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA W. B. Fourney, Department of Mechanical Engineering, University of Maryland, College Park, MD, USA
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Yang X, Jeong W, Son D, Ryoo Y, Kim J, Oh Y, Kwon S, Liu D. Establishment of an Uncomplicated Radiation-delayed Wound Healing Model Using Irradiation in Pigs. Wounds 2019; 31:59-64. [PMID: 30485169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Radiation-delayed wounds require diverse therapeutic strategies to achieve effective healing. However, the development of novel therapies with a radiation-delayed wound healing model is hindered by the lack of standardized animal models. OBJECTIVE In this study, the authors propose and verify a procedure to establish a radiation-delayed wound healing model in pigs. MATERIALS AND METHODS Two female pigs received a single 18-Gy dose of a 6-MeV electron beam per 18 cm x 8 cm area. Three areas were treated on the paraspinal dorsal skin surface of each pig, with 2 on the left side of the spine and 1 on the right. Wounds were periodically created on the 2 pigs at 1 of the following time points: (1) 2 weeks post radiation (PR2 group; n = 4), (2) 4 weeks post radiation (PR4 group; n = 4), and (3) 6 weeks post radiation (PR6 group; n = 4). A partial-thickness wound was created by excising the skin, superficial fat layer, and superficial fascia while preserving the deep fat and deep fascia. Wound contraction was evaluated, and histological analysis was performed at 2 and 4 weeks after wounding. RESULTS The control wounds displayed complete reepithelialization at week 4. However, the PR6 group showed delayed wound healing for the entire experimental period. Furthermore, compared with the control group, the PR6 group demonstrated excessive acute and chronic inflammation and exhibited incomplete reepithelialization at week 4. CONCLUSIONS These findings suggest skin wounding 6 weeks after irradiation is most suitable for the induction of a delayed wound healing model. Using this protocol, the authors safely generated a delayed wound healing model without acute complications from irradiation.
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Affiliation(s)
- Xiao Yang
- Department of Plastic and Reconstructive Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Woonhyeok Jeong
- Department of Plastic and Reconstructive Surgery, Institute for Medical Science, Dongsan Medical Center, Keimyung University, Daegu, Republic of Korea
| | - Daegu Son
- Department of Plastic and Reconstructive Surgery, Institute for Medical Science, Dongsan Medical Center, Keimyung University, Daegu, Republic of Korea
| | - Youngwook Ryoo
- Department of Dermatology, Institute for Medical Science, Dongsan Medical Center, Keimyung University
| | - Jinhee Kim
- Department of Radiation Oncology, Dongsan Medical Center, Keimyung University, Daegu, Republic of Korea
| | - Youngkee Oh
- Department of Radiation Oncology, Dongsan Medical Center, Keimyung University, Daegu, Republic of Korea
| | - Sunyoung Kwon
- Department of Pathology, Dongsan Medical Center, Keimyung University, Daegu, Republic of Korea
| | - Dalie Liu
- Department of Plastic and Reconstructive Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Dias FJ, Fazan VPS, Cury DP, de Almeida SRY, Borie E, Fuentes R, Coutinho-Netto J, Watanabe IS. Growth factors expression and ultrastructural morphology after application of low-level laser and natural latex protein on a sciatic nerve crush-type injury. PLoS One 2019; 14:e0210211. [PMID: 30625210 PMCID: PMC6326513 DOI: 10.1371/journal.pone.0210211] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/18/2018] [Indexed: 12/21/2022] Open
Abstract
The effects of low-level laser therapy (LLLT) and natural latex protein (F1, Hevea brasiliensis) were evaluated on crush-type injuries (15kg) to the sciatic nerve in the expressions of nerve growth factor (NGF) and vascular endothelium growth factor (VEGF) and ultrastructural morphology to associate with previous morphometric data using the same protocol of injury and treatment. Thirty-six male rats were allocated into six experimental groups (n = 6): 1-Control; 2-Exposed nerve; 3-Injured nerve; 4-LLLT (15J/cm2, 780nm, 30mW, Continuous Wave) treated injured nerve; 5-F1 (0,1mg) treated injured nerve; and 6-LLLT&F1 treated injured nerve. Four or eight weeks after, sciatic nerve samples were processed for analysis. NGF expression were higher (p<0.05) four weeks after in all injured groups in comparison to Control (Med:0.8; Q1:0; Q3:55.5%area). Among them, the Injured (Med:70.7; Q1:64.4; Q3:77.5%area) showed the highest expression, and F1 (Med:17.3; Q1:14.1; Q3:21.7%area) had the lowest. At week 8, NGF expressions decreased in the injured groups. VEGF was expressed in all groups; its higher expression was observed in the injured groups 4 weeks after (Injured. Med:29.5; F1. Med:17.7 and LLLT&F1. Med:19.4%area). At week 8, a general reduction of VEGF expression was noted, remaining higher in F1 (Med:35.1; Q1.30.6; Q3.39.6%area) and LLLT&F1 (Med:18.5; Q1:16; Q3:25%area). Ultrastructural morphology revealed improvements in the treated groups; 4 weeks after, the F1 group presented greater quantity and diameter of the nerve fibers uniformly distributed. Eight weeks after, the F1 and LLLT&F1 showed similar characteristics to the non-injured groups. In summary, these results and our previous studies indicated that F1 and LLLT may favorably influence the healing of nerve crush injury. Four weeks after nerve injury F1 group showed the best results suggesting recovery acceleration; at 8th week F1 and LLLT&F1 groups presented better features and higher vascularization that could be associated with VEGF maintenance.
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Affiliation(s)
- Fernando José Dias
- Department of Integral Dentistry, CICO—Research Centre in Dental Sciences, Dental School, Universidad de La Frontera, Temuco, Chile
- * E-mail:
| | - Valéria Paula Sassoli Fazan
- Department of Surgery and Anatomy, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Diego Pulzatto Cury
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | | | - Eduardo Borie
- Department of Integral Dentistry, CICO—Research Centre in Dental Sciences, Dental School, Universidad de La Frontera, Temuco, Chile
| | - Ramón Fuentes
- Department of Integral Dentistry, CICO—Research Centre in Dental Sciences, Dental School, Universidad de La Frontera, Temuco, Chile
| | - Joaquim Coutinho-Netto
- Department of Pharmacology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ii-sei Watanabe
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
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Zhou P, Lin B, Wang P, Pan T, Wang S, Chen W, Cheng S, Liu S. The healing effect of hydrogen-rich water on acute radiation-induced skin injury in rats. J Radiat Res 2019; 60:17-22. [PMID: 30260398 PMCID: PMC6373674 DOI: 10.1093/jrr/rry074] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Indexed: 05/09/2023]
Abstract
This study aimed to determine the healing effect of hydrogen-rich water (HRW) on radiotherapy-induced skin injury. Rats were irradiated with a 6 MeV electron beam from a Varian linear accelerator. After skin wound formation, rats were individually administrated with distilled water, HRW (1.0 ppm) or HRW (2.0 ppm). We measured the healing time and observed the healing rate of the wounded surface. After irradiation, the malondialdehyde (MDA) content and the superoxide dismutase (SOD) activity in the wounded tissues were evaluated, as determined using an MDA and SOD assay kit. Interleukin-6 (IL-6) and epidermal growth factor (EGF) levels were assessed by enzyme-linked immunosorbent assay (ELISA). Models of skin damage were successfully established using a 44 Gy electronic beam. The healing time was shortened in the two HRW-treated groups (P < 0.05). Furthermore, interventions of HRW resulted in a marked reduction in the MDA (P < 0.05) and IL-6 levels (P < 0.01). Additionally, the SOD activity in the two HRW-treated groups was higher than that in the distilled water group at the end of the 1st, 2nd and 3rd weeks (P < 0.001). The EGF level was also significantly increased at the end of the 1st and 2nd weeks (P < 0.05). Compared with the HRW (1.0 ppm) group, the healing rate was higher and the healing time was reduced in the HRW (2.0 ppm) group. A significant decrease was observed in the IL-6 level at the end of the 1st, 3rd and 4th weeks (P < 0.05) and in the EGF content at the end of the 1 week after the HRW administration (P < 0.01). Collectively, our data indicate that HRW accelerates wound healing of radiation-induced skin lesions through anti-oxidative and anti-inflammatory effects, suggesting that HRW has a healing effect on acute radiation-mediated skin injury, and that this is dependent on the concentration of the hydrogen.
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Affiliation(s)
- Ping Zhou
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Bing Lin
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Peng Wang
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Tao Pan
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Shun Wang
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Weisi Chen
- Department of Radiation Physics Center, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Shaowen Cheng
- Department of Trauma Center, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
| | - Sha Liu
- Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou, Hainan Province, PR China
- Corresponding author. Department of Radiotherapy, The First Affiliated Hospital, Hainan Medical University, #33 Longhua Road, Longhua District, Haikou 570000, Hainan Province, PR China. Tel: +86-0898-6652-8040; Fax: +86-0898-6652-8040;
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Tricarico PM, Zupin L, Ottaviani G, Pacor S, Jean-Louis F, Boniotto M, Crovella S. Photobiomodulation therapy promotes in vitro wound healing in nicastrin KO HaCaT cells. J Biophotonics 2018; 11:e201800174. [PMID: 29968387 DOI: 10.1002/jbio.201800174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/01/2018] [Indexed: 06/08/2023]
Abstract
Mutations in NCSTN gene (encoding for nicastrin protein) are associated with hidradenitis suppurativa (HS), a chronic inflammatory disease involving hair follicles. HS is clinically handled with drugs but the most severe cases are treated with surgery. Photobiomodulation (PBM) therapy, already used in the treatment of skin diseases such as acne, herpes virus lesions, ultraviolet damage, vitiligo, hypertrophic scar, keloid, burn, psoriasis and diabetic chronic wounds, could be beneficial as an adjuvant supportive treatment to promote and foster the healing process after skin excision in HS. The effects of PBM therapy in promoting the wound closure are evaluated in a HaCaT cells NCSTN-/-, assessing cell metabolism, migration rate, proliferation and cell cycle progression. In our experimental model, PBM exerts a potent action on metabolism of mutated keratinocytes, incrementing adenosine triphosphate (ATP) production at 2 hours, while after 24 hours an increase of metabolism with a decrement of intracellular ATP levels were recorded. Moreover, PBM speeds up the wound closure, inducing cells' migration without affecting their proliferation.Based on our findings, we suggest the use of PBM in HS patients, who undergo major surgery with large skin excision.
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Affiliation(s)
| | | | | | | | - Francette Jean-Louis
- INSERM U955 Eq.16, Institut Mondor de Recherche Biomédicale and VRI (Vaccine Research Institute), Créteil, France
| | - Michele Boniotto
- INSERM U955 Eq. 16, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France
| | - Sergio Crovella
- University of Trieste, Trieste, Italy
- Institute for Maternal and Child Health "Burlo Garofolo", Trieste, Italy
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Zhang X, Li H, Li Q, Li Y, Li C, Zhu M, Zhao B, Li G. Application of red light phototherapy in the treatment of radioactive dermatitis in patients with head and neck cancer. World J Surg Oncol 2018; 16:222. [PMID: 30419911 PMCID: PMC6233368 DOI: 10.1186/s12957-018-1522-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 10/29/2018] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND To observe the effect of red light phototherapy (RLPT) on radioactive dermatitis (RD) caused by radiotherapy in patients with head and neck cancer (HNC). METHODS Sixty patients with HNC admitted to our hospital were randomly divided into experimental group and control group, 30 patients in each group. The control group received routine daily care during radiotherapy treatment. In the experimental group, in addition to routine daily care during radiotherapy treatment, photon therapy apparatus RLPT was added, 10 min/time, 2 times/day, and lasted until the end of radiotherapy. The pain and conditions of the patients' skin were assessed daily, and the skin pain and dermatitis grades of the two groups were compared. RESULTS In terms of the reaction degree of RD, experimental group was mainly grade 0-2, and control group was mainly grade 2-3, with a significant difference (P < 0.05). In terms of skin pain, according to the pain records at week 2, 3, and 4, the pain degree increased with time. However, the score of wound pain in experimental group was significantly lower than that in control group, and there was a significant difference between the two groups (P < 0.05). CONCLUSIONS The application of RLPT in the treatment of RD can help accelerate wound healing and significantly shorten healing time. It can not only reduce wounds pain of patients, promote inflammation and ulcer healing, but also ensure the smooth progress of patients' radiotherapy and improve their quality of lives, which is worth popularization and application in the clinical practice.
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Affiliation(s)
- Xudong Zhang
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Hongfei Li
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Qian Li
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Ying Li
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Chao Li
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Minmin Zhu
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Bing Zhao
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
| | - Guowen Li
- Radiotherapy inpatient Ward II, The First Affiliated Hospital of Zhengzhou University, No.1 Eastern Jianshe Road, Zhengzhou, 450000 Henan China
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Wang Y, Qiu Y, Li J, Zhao C, Song J. Low-intensity pulsed ultrasound promotes alveolar bone regeneration in a periodontal injury model. Ultrasonics 2018; 90:166-172. [PMID: 30049446 DOI: 10.1016/j.ultras.2018.06.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 12/27/2017] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
Periodontitis is a common oral disease characterized by progressive destruction of periodontal tissue and loss of teeth. However, regeneration of periodontal tissue is a time-consuming process. Low-intensity pulsed ultrasound (LIPUS) is a widely used non-invasive intervention for enhancing bone healing in fractures and non-unions. With the hypothesis that LIPUS may accelerate periodontal regeneration, the effects of LIPUS on periodontal tissue regeneration were investigated both in vitro and in vivo. LIPUS (90 mw/cm2, 20 min/d, 1.5 MHz) was applied to stimulate dog periodontal ligament cells (dPDLCS). The mRNA expression of BSP (P < 0.05), OPN (P < 0.05) and COL3 (P < 0.05) was increased significantly in the LIPUS group. The positive stained mineralized nodules by alizarin red in the LIPUS group were greater than in the control group (P < 0.05). Eight male beagle dogs were divided into 4 groups: guided tissue regeneration (GTR) group (G1), LIPUS + GTR group (G2), LIPUS group (G3), and control group (G4, no treatment). A 4 × 5 mm2 defect was created in the buccal alveolar bone. The modeling areas in the G2 and G3 groups were then exposed to LIPUS. Eight weeks after surgery, histological assessment indicated increased periodontal tissue in the LIPUS + GTR group. Micro computed tomography (micro-CT) showed that the regenerated bone volume (BV) in the G2 was significantly higher than that in the G1, G3 and G4 groups (P < 0.05). The bone surface (BS) trabecular number (Tb.N) and trabecular thickness (Tb.Th) in G2 were markedly higher than in G4 (P < 0.05). It is concluded that LIPUS + GTR can accelerate new alveolar bone formation, with a prospective for promoting periodontal tissue repair.
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Affiliation(s)
- Yunji Wang
- Stomatological Hospital of Chongqing Medical University, North Songshi Road #426, 401147 Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, China, North Songshi Road #426, 401147 Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, North Songshi Road #426, 401147 Chongqing, China
| | - Ye Qiu
- Stomatological Hospital of Chongqing Medical University, North Songshi Road #426, 401147 Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, China, North Songshi Road #426, 401147 Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, North Songshi Road #426, 401147 Chongqing, China
| | - Jie Li
- Stomatological Hospital of Chongqing Medical University, North Songshi Road #426, 401147 Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, China, North Songshi Road #426, 401147 Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, North Songshi Road #426, 401147 Chongqing, China
| | - Chunliang Zhao
- Dept. of Biomedical Engineering, Chongqing Medical University, Medical College Road #1, 400016 Chongqing, China
| | - Jinlin Song
- Stomatological Hospital of Chongqing Medical University, North Songshi Road #426, 401147 Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, China, North Songshi Road #426, 401147 Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, North Songshi Road #426, 401147 Chongqing, China.
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Neves LMG, Parizotto NA, Cominetti MR, Bayat A. Photobiomodulation of a flowable matrix in a human skin ex vivo model demonstrates energy-based enhancement of engraftment integration and remodeling. J Biophotonics 2018; 11:e201800077. [PMID: 29688627 DOI: 10.1002/jbio.201800077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 04/19/2018] [Indexed: 06/08/2023]
Abstract
The use of dermal substitutes to treat skin defects such as ulcers has shown promising results, suggesting a potential role for skin substitutes for treating acute and chronic wounds. One of the main drawbacks with the use of dermal substitutes is the length of time from engraftment to graft take, plus the risk of contamination and failure due to this prolonged integration. Therefore, the use of adjuvant energy-based therapeutic modalities to augment and accelerate the rate of biointegration by dermal substitute engraftments is a desirable outcome. The photobiomodulation (PBM) therapy modulates the repair process, by stimulating cellular proliferation and angiogenesis. Here, we evaluated the effect of PBM on a collagen-glycosaminoglycan flowable wound matrix (FWM) in an ex vivo human skin wound model. PBM resulted in accelerated rate of re-epithelialization and organization of matrix as seen by structural arrangement of collagen fibers, and a subsequent increased expression of alpha-smooth muscle actin (α-SMA) and vascular endothelial growth factor A (VEGF-A) leading to an overall improved healing process. The use of PBM promoted a beneficial effect on the rate of integration and healing of FWM. We therefore propose that the adjuvant use of PBM may have utility in enhancing engraftment and tissue repair and be of value in clinical practice.
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Affiliation(s)
- Lia M G Neves
- Laboratory of Biology of Aging (LABEN), Department of Gerontology, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Nivaldo A Parizotto
- Physical Therapy Department, Federal University of São Carlos, São Carlos, SP, Brazil
- Biotechnology Post-Graduation Program, University of Araraquara, Araraquara, Brazil
- Post-Graduation in Biomedical Engineering, University of Brazil, São Paulo, SP, Brazil
| | - Marcia R Cominetti
- Laboratory of Biology of Aging (LABEN), Department of Gerontology, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Ardeshir Bayat
- School of Biological Sciences and Health/Division of Musculoskeletal and Dermatological Sciences, University of Manchester, Manchester, UK
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Wu X, Li H, Xiao N. Advancement of Near-infrared (NIR) laser interceded surface enactment of proline functionalized graphene oxide with silver nanoparticles for proficient antibacterial, antifungal and wound recuperating therapy in nursing care in hospitals. J Photochem Photobiol B 2018; 187:89-95. [PMID: 30103077 DOI: 10.1016/j.jphotobiol.2018.07.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/14/2018] [Accepted: 07/17/2018] [Indexed: 01/23/2023]
Abstract
Medication obstruction of microscopic organisms has turned into a worldwide medical issue, as it makes the ordinary anti-toxins less effective. It is desperately expected to investigate novel antibacterial materials and create viable treatment techniques to defeat the medication obstruction of anti-infection agents. Herein, we effectively fabricated silver nanoparticles improved proline/graphene oxide nano-flakes (GO-Pro/n-Ag) as novel anti-pathogenic substance through simplistic technique. The property of the silver nanoparticles activated discharge gave amazing antibacterial and antifungal movement against the pathogenic microorganism. Upon supply of NIR, the graphene oxide based biomaterials privately increased the temperature, bringing about the high mortality of pathogenic microorganism. The GO-Pro biocomposite activated n-Ag particles discharging approach for antibacterial, antifungal enables n-Ag to be ensured by proline layout without influencing normal cells. The biocomposites provided antibacterial and antifungal movement against S. aureus, P.aeruginosa, C. albicans and S. cerevisia. Also, the L929 mouse fibroblast cells were utilized for cytocompatibility assessment, and the GO-Pro/n-Ag demonstrated low lethality. Likewise, the GO-Pro/n-Ag and GO-Pro/n-Ag + NIR are set up for in vivo tests and demonstrate incredible antibacterial property in wound model. As the fabricated GO-Pro/n-Ag biocomposite nano-flakes have the benefits of minimal effort and high anti-pathogenic activity, they may be of promising and helpful antibacterial and antifungal specialists for various biomedical applications.
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Affiliation(s)
- Xin Wu
- Department of Medical Engineering, Linyi People's Hospital, Linyi 276000, Shandong, PR China
| | - Hui Li
- Department of Nursing, Linyi People's Hospital, Linyi 276000, Shandong, PR China
| | - Ning Xiao
- Department of Urology Surgery, Linyi People's Hospital, Linyi 276000, Shandong, PR China.
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Katayama B, Ozawa T, Morimoto K, Awazu K, Ito N, Honda N, Oiso N, Tsuruta D. Enhanced sterilization and healing of cutaneous pseudomonas infection using 5-aminolevulinic acid as a photosensitizer with 410-nm LED light. J Dermatol Sci 2018; 90:323-331. [PMID: 29534858 DOI: 10.1016/j.jdermsci.2018.03.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 02/14/2018] [Accepted: 03/02/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pseudomonas aeruginosa (PA) frequently develops antibiotic-resistant characteristics, which is clinically problematic. The main reason behind the rise of antibiotic-resistant PA is the extensive use of antibiotics. Therefore, a novel technique is needed to treat PA infections. Photodynamic therapy (PDT) is thought to have the potential to be a non-antibiotic treatment for infections. 5-Aminolevulinic acid (ALA), which works as a photosensitizer after being metabolized into protoporphyrin IX (PpIX) in the heme synthetic pathway, is used for PDT. Thus far, the in vivo effectiveness of PDT using ALA against PA is unknown. OBJECTIVE In this study, we investigated PDT using ALA both in vitro and in vivo. METHODS AND RESULTS Although PDT with ALA alone did not show a bactericidal effect on PA, PDT with both ALA and EDTA-2Na had a bactericidal effect in vitro. In in vivo experiments, wounds healed faster in PA-infected mice treated with PDT using both EDTA-2Na and ALA compared to non-PDT. CONCLUSION These results suggest that PDT with EDTA-2Na and ALA is a potential novel treatment option for PA-infected wounds.
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Affiliation(s)
- Bunpei Katayama
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Toshiyuki Ozawa
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | - Kuniyuki Morimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kunio Awazu
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan
| | - Nobuhisa Ito
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan
| | - Norihiro Honda
- Medical Beam Physics Laboratory, Osaka University Graduate School of Engineering, Osaka, Japan; Institute for Academic Initiatives, Osaka University, Osaka, Japan
| | - Naoki Oiso
- Department of Dermatology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka City University Graduate School of Medicine, Osaka, Japan
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de Freitas NR, Guerrini LB, Esper LA, Sbrana MC, Dalben GDS, Soares S, de Almeida ALPF. Evaluation of photobiomodulation therapy associated with guided bone regeneration in critical size defects. In vivo study. J Appl Oral Sci 2018; 26:e20170244. [PMID: 29742256 PMCID: PMC5933825 DOI: 10.1590/1678-7757-2017-0244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/08/2017] [Accepted: 09/18/2017] [Indexed: 03/25/2024] Open
Abstract
The repair of bone defects raises the interest of investigators in several health specialties. Grafting techniques with bone substitutes and laser therapies have been investigated to replace autogenous bone and accelerate the bone healing process. Objective To evaluate the effect of photobiomodulation therapy (PBMT) associated with guided bone regeneration (GBR) in critical size defects. Material and Methods The study was conducted on 80 male rats (Rattus norvegicus albinus, Wistar) submitted to surgical creation of a critical size defect on the calvaria, divided into eight study groups: group C (control - only blood clot); group M (collagen membrane); group PBMT (photobiomodulation therapy); group AB (autogenous bone); group AB+PBMT; group AB+M; group PBMT+M; group AB+PBMT+M. The animals were killed 30 days postoperatively. After tissue processing, bone regeneration was evaluated by histomorphometric analysis and statistical analyses were performed (Tukey test, p<0.05). Results All groups had greater area of newly formed bone compared to group C (9.96±4.49%). The group PBMT+M (achieved the greater quantity of new bone (64.09±7.62%), followed by groups PBMT (47.67±8.66%), M (47.43±15.73%), AB+PBMT (39.15±16.72%) and AB+PBMT+M (35.82±7.68%). After group C, the groups AB (25.10±16.59%) and AB+M (22.72±13.83%) had the smallest quantities of newly formed bone. The area of remaining particles did not have statistically significant difference between groups AB+M (14.93±8.92%) and AB+PBMT+M (14.76±6.58%). Conclusion The PBMT utilization may be effective for bone repair, when associated with bone regeneration techniques.
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Affiliation(s)
- Nicole Rosa de Freitas
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Pós-Graduação em Reabilitação Oral, Bauru, São Paulo, Brasil
| | - Luísa Belluco Guerrini
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Pós-Graduação em Reabilitação Oral, Bauru, São Paulo, Brasil
| | - Luis Augusto Esper
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Periodontia, Bauru, São Paulo, Brasil
| | - Michyele Cristhiane Sbrana
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Periodontia, Bauru, São Paulo, Brasil
| | - Gisele da Silva Dalben
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Odontopediatria e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Simone Soares
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, São Paulo, Brasil
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Amini A, Pouriran R, Abdollahifar MA, Abbaszadeh HA, Ghoreishi SK, Chien S, Bayat M. Stereological and molecular studies on the combined effects of photobiomodulation and human bone marrow mesenchymal stem cell conditioned medium on wound healing in diabetic rats. J Photochem Photobiol B 2018; 182:42-51. [PMID: 29604553 DOI: 10.1016/j.jphotobiol.2018.03.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/27/2018] [Accepted: 03/09/2018] [Indexed: 12/11/2022]
Abstract
We investigated the effects of conditioned medium (CM) from human bone marrow mesenchymal stem cells (h BMMSC)s and pulse wave photobiomodulation (PW PBM), applied alone or in combination, on the stereological parameters and gene expression of some growth factors, during wound healing in a streptozotocin (STZ)-induced rat model of type one diabetes mellitus (T1DM). T1DM was induced in 72 rats and two incisions were made in each animal. The rats were assigned to one of four groups: a control (placebo) group, a Laser group (890 nm, 80 Hz, 0.2 J/cm2); a CM group, and a combined CM + Laser group. On post-surgical days 4, 7, and 15, skin samples were extracted for stereology and reverse transcription PCR (RT-PCR) analyses of gene expression of basic fibroblast growth factor (bFGF), hypoxia-inducible factor (HIF-1α), and stromal cell-derived factor-1α (SDF-1α). The stereological examinations of the proximal and distal wounds revealed significantly enhanced healing in all the treated groups, compared to the control group. The extent of healing was significantly greater in the CM + Laser group than in the other treatment groups. The RT-PCR results also indicated greater gene expression in the CM + Laser and Laser groups than in the CM and control groups. Application of CM and PW PBM, alone or in combination accelerated the process of wound healing in T1DM rats. The results of combined application of CM and PW PBM, indicated a synergistic effect, and the combination treatment was statistically more effective than single applications of CM or PW PBM.
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Affiliation(s)
- Abdollah Amini
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ramin Pouriran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Amin Abdollahifar
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - Hojjat Allah Abbaszadeh
- Hearing Disorder Research Center, Shahid Beheshti University of Medical Science, Tehran, Iran
| | | | - Sufan Chien
- Noveratech LLC of Louisville, KY, Department of Surgery, University of Louisville, Louisville, KY, USA
| | - Mohammad Bayat
- Noveratech LLC of Louisville, KY, Price Institute of Surgical Research, Department of Surgery, University of Louisville, Louisville, KY, USA.
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Abstract
The current study evaluated the photobiomodulatory effect of visible red light on cell proliferation and viability in various fibroblast diabetic models in vitro, namely, unstressed normal (N) and stressed normal wounded (NW), diabetic wounded (DW), hypoxic wounded (HW) and diabetic hypoxic wounded (DHW). Cells were irradiated at a wavelength of 660 nm with a fluence of 5 J/cm2 (11.23 mW/cm2), which related to an irradiation time of 7 min and 25 s. Control cells were not irradiated (0 J/cm2). Cells were incubated for 48 h and cellular proliferation was determined by measuring 5-bromo-2'-deoxyuridine (BrdU) in the S-phase (flow cytometry), while viability was assessed by the Trypan blue exclusion test and Apoptox-glo triplex assay. In comparison with the respective controls, PBM increased viability in N- (P ≤ 0.001), HW- (P ≤ 0.01) and DHW-cells (P ≤ 0.05). HW-cells showed a significant progression in the S-phase (P ≤ 0.05). Also, there was a decrease in the G2M phase in HW- and DHW-cells (P ≤ 0.05 and P ≤ 0.05, respectively). This study concludes that hypoxic wounded and diabetic hypoxic wounded models responded positively to PBM, and PBM does not damage stressed cells but has a stimulatory effect on cell viability and proliferation to promote repair and wound healing. This suggests that the more stressed the cells are the better they responded to photobiomodulation (PBM).
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Affiliation(s)
- S M Ayuk
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
| | - N N Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa.
| | - H Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
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Ayuk SM, Abrahamse H, Houreld NN. Photobiomodulation alters matrix protein activity in stressed fibroblast cells in vitro. J Biophotonics 2018; 11:e201700127. [PMID: 29024528 DOI: 10.1002/jbio.201700127] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 10/10/2017] [Indexed: 05/20/2023]
Abstract
A balance is maintained between matrix synthesis and degradation, and a prolonged increase in matrix metalloproteinases (MMPs) affects healing. Photobiomodulation (PBM) speeds up healing and alters wound environment. The study aimed to determine changes in protein and gene expression of collagen type 1 (Col-I), MMP-3 and -9 and TIMP-1 in fibroblasts irradiated at 660 or 830 nm. Commercially purchased human skin fibroblast cells were modeled into five groups namely, normal, normal wounded, diabetic wounded, hypoxic wounded and diabetic hypoxic wounded. Control cells were sham irradiated. Laser irradiation was conducted at 660 or 830 nm (108/or 94 mW, 9.1 cm2 , 420/or 483 s) with 5 J/cm2 . Forty-eight hours post-irradiation, protein expression of TIMP-1, MMP-3, -9 and Col-I was determined by flow cytometry and immunofluorescence, and gene expression by real-time RT-PCR. There was an increase in TIMP-1 and Col-I, and a decrease in MMP-3 and -9, as well as an alteration in mRNA expression of MMP3, MMP9, TIMP1 and COL1A1 in irradiated cells. Due to the responsiveness of the diabetic hypoxic wounded model, the findings propose this model as appropriate for wound healing studies and suggest that PBM promotes the remodeling phase of wound healing by decreasing matrix degradation and upregulating synthesis.
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Affiliation(s)
- Sandra M Ayuk
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Nicolette N Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
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Qu W, Shang J, Liu L, Xu D, Du P, Liu Z. Comparative study on the incision healing of the palatal mucosa by using Er:YAG laser or traditional scalpel in the SD rats. Lasers Med Sci 2018; 33:1019-1024. [PMID: 29356921 DOI: 10.1007/s10103-018-2450-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 01/15/2018] [Indexed: 11/24/2022]
Abstract
The aim of this study was to compare the histology of wound healing following incisions with the scalpel or the Er:YAG laser in the palatal mucosa of SD rats. Two types of wounds were performed with the stainless steel scalpel or the Er:YAG laser in the palatal mucosa of SD rats, while the adjacent untreated palatal mucosa was chosen as control. Rats were sacrificed on day 1, day 3, day 7, and day 30 post-surgery. Biopsy samples from each wound were examined and the expression of IL-1ß and TGF-ß1 was determined by enzyme-linked immunosorbent assay (ELISA). The early postoperative incision of the scalpel group had obvious bleeding and swelling, while the laser wound mainly covered the surface of white pseudomembrane. The infiltration of neutrophils and lymphocytes in the stroma of the scalpel incision was more than that of the laser group. Compared to the laser group, 1 and 3 days after operation, the TGF-β1 content of the scalpel group were significantly increased (P = 0.032 and 0.019). Seven days after operation, the TGF-β1 content of two groups was decreased. TGF-β1 expression of control group was obviously increased (P > 0.05); 1, 3, and 7 days after operation, the traditional scalpel amount of IL-1β expression was significantly higher than that of control group (P = 0.000, 0.000, and 0.001). Postoperative day 1, IL-1β expression of laser group and control group had no significant difference (P = 0.572). Three days after operation, IL-1β expression of laser incision was increased and was significantly higher than that in control group (P = 0.032), however lower than the scalpel group (P = 0.03). Seven days after operation, the IL-1β expression of two groups had no significant difference (P = 0.333); however, the IL-1β expression of two groups were significantly higher than that of the control group (P = 0.02 and 0.001). Compared to the traditional scalpel, the incision of Er:YAG laser has smaller inflammation reaction, more pseudomembrane coverage, and minimal damage of the mucoperiosteal tissue.
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Affiliation(s)
- Weidong Qu
- Department of Oral and Maxillofacial Surgery, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China
| | - Jiang Shang
- Department of Oral and Maxillofacial Surgery, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China
| | - Li Liu
- Department of Orthodontics, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China
| | - Dapeng Xu
- Department of Oral and Maxillofacial Surgery, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China
| | - Pinggong Du
- Department of Oral and Maxillofacial Surgery, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China
| | - Zhonghao Liu
- Department of Implantology, Yantai Stomatological Hospital, No. 142 North Great Street, Zhifu District, Yantai, 264001, Shandong Province, People's Republic of China.
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