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Ding J, Mellergaard M, Zhu Z, Kwan P, Edge D, Ma Z, Hebert L, Alrobaiea S, Iwasaki T, Nielsen MCE, Tredget EE. Fluorescent light energy modulates healing in skin grafted mouse model. Open Med (Wars) 2021; 16:1240-1255. [PMID: 34522783 PMCID: PMC8402934 DOI: 10.1515/med-2021-0329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/11/2021] [Accepted: 07/07/2021] [Indexed: 12/25/2022] Open
Abstract
Skin grafting is often the only treatment for skin trauma when large areas of tissue are affected. This surgical intervention damages the deeper dermal layers of the skin with implications for wound healing and a risk of scar development. Photobiomodulation (PBM) therapy modulates biological processes in different tissues, with a positive effect on many cell types and pathways essential for wound healing. This study investigated the effect of fluorescent light energy (FLE) therapy, a novel type of PBM, on healing after skin grafting in a dermal fibrotic mouse model. Split-thickness human skin grafts were transplanted onto full-thickness excisional wounds on nude mice. Treated wounds were monitored, and excised xenografts were examined to assess healing and pathophysiological processes essential for developing chronic wounds or scarring. Results demonstrated that FLE treatment initially accelerated re-epithelialization and rete ridge formation, while later reduced neovascularization, collagen deposition, myofibroblast and mast cell accumulation, and connective tissue growth factor expression. While there was no visible difference in gross morphology, we found that FLE treatment promoted a balanced collagen remodeling. Collectively, these findings suggest that FLE has a conceivable effect at balancing healing after skin grafting, which reduces the risk of infections, chronic wound development, and fibrotic scarring.
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Affiliation(s)
- Jie Ding
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Maiken Mellergaard
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Department of Research and Development, Klox Technologies Europe Ltd, Dublin, Ireland
| | - Zhensen Zhu
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Peter Kwan
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Deirdre Edge
- Department of Research and Development, Klox Technologies Europe Ltd, Dublin, Ireland
| | - Zengshuan Ma
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Lise Hebert
- Department of Research and Development, Klox Technologies Inc., Laval, Canada
| | - Saad Alrobaiea
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Takashi Iwasaki
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Michael Canova Engelbrecht Nielsen
- Department of Research and Development, Klox R&D Center, Guangdong Klox Biomedical Group Co., Ltd, Room 603, 6/F, Building 8, No. 6, Nanjiang Second Road, Zhujiang Street, Nansha District, Guangzhou, China
| | - Edward E. Tredget
- Divisions of Plastic and Reconstructive Surgery and Critical Care, 2D2.28 Walter C MacKenzie Health Sciences Centre & Wound Healing Research Group, 161 HMRC, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
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Mellergaard M, Fauverghe S, Scarpa C, Pozner VL, Skov S, Hebert L, Nielsen M, Bassetto F, Téot L. Evaluation of Fluorescent Light Energy for the Treatment of Acute Second-degree Burns. Mil Med 2021; 186:416-423. [PMID: 33499452 DOI: 10.1093/milmed/usaa299] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/20/2020] [Accepted: 12/08/2020] [Indexed: 11/14/2022] Open
Abstract
INTRODUCTION The use of photobiomodulation has been proposed to improve wound healing for the last two decades. Recent development in photobiomodulation has led to the development of a novel biophotonic platform that utilizes fluorescent light energy (FLE) within the visible spectrum of light for healing of skin inflammation and wounds. MATERIALS AND METHODS In this article, FLE was used in preliminary analysis on 18 case studies of acute second-degree burns and in a pilot study using an ex vivo human skin model. Efficacy of FLE on wound healing and tissue remodeling was evaluated by monitoring improvements in the treated tissues, assessing pain for the patients, and by performing human genome microarray analysis of FLE-treated human skin samples. RESULTS Healing was reported for all 18 patients treated with FLE for acute second-degree burns without reported adverse effects or development of infections. Furthermore, preliminary ex vivo skin model data suggest that FLE impacts different cellular pathways including essential immune-modulatory mechanisms. CONCLUSIONS The results presented in this article are encouraging and suggest that FLE balances different stages of wound healing, which opens the door to initiating randomized controlled clinical trials for establishing the efficacy of FLE treatment in different phases of wound healing of second-degree burns.
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Affiliation(s)
- Maiken Mellergaard
- Klox Technologies, 2750 Ballerup, Denmark.,Immunology, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg C, Denmark
| | | | - Carlotta Scarpa
- Clinic of Plastic and Reconstructive Surgery, Padova University-Hospital, 35121 Padova, Italy
| | - Vladimir Luca Pozner
- Plastic Surgery Department, Burn Unit, University-Hospital Montpellier, 34295 Montpellier, France
| | - Søren Skov
- Immunology, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg C, Denmark
| | - Lise Hebert
- Klox Technologies, Inc., Laval, Quebec H7V 4A7, Canada
| | | | - Franco Bassetto
- Clinic of Plastic and Reconstructive Surgery, Padova University-Hospital, 35121 Padova, Italy
| | - Luc Téot
- Plastic Surgery Department, Burn Unit, University-Hospital Montpellier, 34295 Montpellier, France
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Russo A, Mellergaard M, Pellacani G, Nisticò S, Nielsen MCE. Fluorescent light energy combined with systemic isotretinoin: A 52-week follow-up evaluating efficacy and safety in treatment of moderate-severe acne. Clin Case Rep 2021; 9:2057-2068. [PMID: 33936640 PMCID: PMC8077247 DOI: 10.1002/ccr3.3944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 01/22/2021] [Accepted: 02/02/2021] [Indexed: 12/04/2022] Open
Abstract
Fluorescent light energy therapy combined with low-dose isotretinoin or tetracycline show remarkable clinical effect on 12 cases of moderate-to-severe acne. Treatment was considered safe, well-tolerated, and highly efficacious.
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Affiliation(s)
- Antonio Russo
- Department of MedicalSurgical and Neuro SciencesDermatological SectionUniversity of SienaSienaItaly
| | - Maiken Mellergaard
- ImmunologyFaculty of Health and Medical SciencesUniversity of CopenhagenFrederiksberg CDenmark
- Klox Technologies EuropeDublinIreland
| | - Giovanni Pellacani
- Department of DermatologyUniversity of Modena and Reggio EmiliaModenaItaly
| | - Steven Nisticò
- Department of Health Sciences, Unit of DermatologyMagna Graecia UniversityCatanzaroItaly
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Scarcella G, Gerber PA, Edge D, Nielsen MCE. Effective removal of solar lentigines by combination of pre- And post-fluorescent light energy treatment with picosecond laser treatment. Clin Case Rep 2020; 8:1429-1432. [PMID: 32884768 PMCID: PMC7455422 DOI: 10.1002/ccr3.2839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/22/2020] [Accepted: 03/20/2020] [Indexed: 01/02/2023] Open
Abstract
We present a novel treatment for removal of SL that is efficient and enables removal or lesions not immediately visible. Kleresca® FLE technology combined with picosecond laser treatment removes SL lesions and improves skin quality and appearance.
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Affiliation(s)
| | - Peter Arne Gerber
- Department of DermatologyMedical FacultyHeinrich‐Heine University, & Dermatologie am LuegplatzDüsseldorfGermany
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