1
|
Rahmati A, Abbasi R, Najafi R, Asnaashari M, Behroozi R, Rezaei-Soufi L, Karkehabadi H. Effect of Low-Level Diode Laser and Red Light-Emitting Diode on Survival and Osteogenic/Odontogenic Differentiation of Human Dental Pulp Stem Cells. Photobiomodul Photomed Laser Surg 2024; 42:306-313. [PMID: 38546858 DOI: 10.1089/photob.2023.0127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024] Open
Abstract
Background: This investigation set out to compare the impacts of low-level diode laser (LLDL) and red light-emitting diode (LED) on the survival of human dental pulp stem cells (hDPSCs) and osteogenic/odontogenic differentiation. Methods and materials: In this ex vivo experimental study, the experimental groups underwent the irradiation of LLDL (4 J/cm2 energy density) and red LED in the osteogenic medium. Survival of hDPSCs was assessed after 24 and 48 h (n = 9) using the methyl thiazolyl tetrazolium (MTT) assay. The assessment of osteogenic/odontogenic differentiation was conducted using alizarin red staining (ARS; three repetitions). The investigation of osteogenic and odontogenic gene expression was performed at two time points, specifically 24 and 48 h (n = 12). This analysis was performed utilizing real-time reverse-transcription polymerase chain reaction (RT-PCR). The groups were compared at each time point using SPSS version 24. To analyze the data, the Mann-Whitney U test, analysis of variance, Tukey's test, and t-test were utilized. Results: The MTT assay showed that LLDL significantly decreased the survival of hDPSCs after 48 h, compared with other groups (p < 0.05). The qualitative results of ARS revealed that LLDL and red LED increased the osteogenic differentiation of hDPSCs. LLDL and red LED both upregulated the expression of osteogenic/odontogenic genes, including bone sialoprotein (BSP), alkaline phosphatase (ALP), dentin matrix protein 1 (DMP1), and dentin sialophosphoprotein (DSPP), in hDPSCs. The LLDL group exhibited a higher level of gene upregulation (p < 0.0001). Conclusions: The cell survival of hDPSCs was reduced, despite an increase in osteogenic/odontogenic activity. Clinical relevance: Introduction of noninvasive methods in regenerative endodontic treatments.
Collapse
Affiliation(s)
- Afsaneh Rahmati
- Department of Endodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Roshanak Abbasi
- Department of Endodontics, School of Dentistry, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Rezvan Najafi
- Department of Medical Molecular & Genetics, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Asnaashari
- Laser Application in Medical Sciences Research Center, Department of Endodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Loghman Rezaei-Soufi
- Department of Operative Dentistry, Dental Research Center, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Hamed Karkehabadi
- Department of Endodontics, Dental Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| |
Collapse
|
2
|
Zaki Ewiss MA, Mahmoud MA, Steiner R. Effect of femtosecond laser interaction with human fibroblasts: a preliminary study. Lasers Med Sci 2023; 38:83. [PMID: 36867297 PMCID: PMC9984333 DOI: 10.1007/s10103-023-03740-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 02/18/2023] [Indexed: 03/04/2023]
Abstract
In in vitro methods and cell culture models, femtosecond (fs) laser interaction has been employed to assess its effect on the proliferation and morphology of human skin fibroblasts. We cultured a primary human skin fibroblast cell line on a glass plate, passages 17-23. The cells were irradiated with a 90-fs laser at a wavelength of 800 nm and a repetition rate of 82 MHz. The target received an average power of 320 mW for 5, 20, and 100 s, corresponding to the radiation exposures of 22.6, 90.6, and 452.9 J/cm2, respectively. Using a laser scanning microscopy technique, the photon densities were measured to be 6.4 × 1018, 2.6 × 1019, and 1.3 × 1020 photons/cm2 in a spot area of 0.07 cm2; the recorded spectra were obtained from the laser interaction after 0.00, 1.00, 25.00, and 45.00 h. The cell count and morphological changes showed that the cultured cells were affected by laser irradiation under photon stress; some fibroblasts were killed, while others were injured and survived. We discovered evidence of the formation of several coenzyme compounds, such as flavin (500-600 nm), lipopigments (600-750 nm), and porphyrin (500-700 nm). This study is motivated by the future development of a novel, ultra-short fs laser system and the need to develop a basic in vitro understanding of photon-human cell interaction. The cell proliferation indicated that cells are partly killed or wounded. The exposure of fibroblasts to fs laser fluence up to 450 J/cm2 accelerates cell growth of the viable residual cell.
Collapse
Affiliation(s)
- M A Zaki Ewiss
- Department of Physics, Faculty of Science, Cairo University, Giza, 12630, Egypt.
| | - M A Mahmoud
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - R Steiner
- Institute of Laser Technologies in Medicine and Metrology at the University of Ulm, 89081, Ulm, Germany
| |
Collapse
|
3
|
Rahmati A, Abbasi R, Najafi R, Rezaei-soufi L, Karkehabadi H. Effect of diode low level laser and red light emitting diode irradiation on cell proliferation and osteogenic/odontogenic differentiation of stem cells from the apical papilla. BMC Oral Health 2022; 22:543. [PMID: 36434589 PMCID: PMC9701043 DOI: 10.1186/s12903-022-02574-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/08/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND This experimental study aimed to assess the effect of irradiation of red light-emitting diode (LED) and Diode low-level laser (LLL) on osteogenic/odontogenic differentiation of stem cells from the apical papilla (SCAPs). MATERIALS AND METHODS SCAPs were isolated from the human tooth root. The experimental groups were subjected to 4 J/cm2 diode low level laser and red LED irradiation in osteogenic medium. The control group did not receive any irradiation. Cell viability/proliferation of SCAPs was assessed by the methyl thiazolyl tetrazolium (MTT) assay on days 1 and 2 (n = 9). Osteogenic differentiation was evaluated by alizarin red staining (ARS) (n = 3), and expression of osteogenic genes by real-time polymerase chain reaction (RT-PCR) (n = 12) on days 1 and 2. SPSS version 18 was used for data evaluation. The Kruskal-Wallis and Mann-Whitney tests were used to compare the groups at each time point. RESULTS The MTT assay showed no significant difference in cell viability/proliferation of SCAPs in the low level laser, red LED, and control groups at 24 or 48 h (P < 0.001). The ARS assessment showed that low level laser and red LED irradiation enhanced osteogenic differentiation of SCAPs. low level laser and red LED irradiation both induced over-expression of osteogenic/dentinogenic genes including alkaline phosphatase (ALP), dentin sialophosphoprotein (DSPP), dentin matrix protein 1 (DMP-1), and bone sialoprotein (BSP) in SCAPs. Up-regulation of genes was significantly greater in low level laser irradiation group than red LED group (P < 0.001). CONCLUSION Diode low level laser irradiation with 4 J/cm2 energy density and red LED irradiation enhanced osteogenic differentiation of SCAPs without adversely affecting cell viability.
Collapse
Affiliation(s)
- Afsaneh Rahmati
- grid.411950.80000 0004 0611 9280Endodontic Department, School of Dentistry, Hamadan University of Medical Science, Hamadan, Iran
| | - Roshanak Abbasi
- grid.411950.80000 0004 0611 9280Endodontic Department, School of Dentistry, Hamadan University of Medical Science, Hamadan, Iran ,grid.411950.80000 0004 0611 9280Department of Medical Molecular & Genetics, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rezvan Najafi
- grid.411950.80000 0004 0611 9280Department of Medical Molecular & Genetics, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran ,grid.411950.80000 0004 0611 9280Dental Research Center, Department of Operative Dentistry, School of dentistry, Hamadan University of Medical Science, Hamadan, Iran
| | - Loghman Rezaei-soufi
- grid.411950.80000 0004 0611 9280Dental Research Center, Department of Operative Dentistry, School of dentistry, Hamadan University of Medical Science, Hamadan, Iran
| | - Hamed Karkehabadi
- grid.411950.80000 0004 0611 9280Endodontic Department, School of Dentistry, Hamadan University of Medical Science, Hamadan, Iran
| |
Collapse
|
4
|
Sleep SL, Skelly D, Love RM, George R. Bioenergetics of photobiomodulated osteoblast mitochondrial cells derived from human pulp stem cells: systematic review. Lasers Med Sci 2021; 37:1843-1853. [PMID: 34806122 DOI: 10.1007/s10103-021-03439-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 10/06/2021] [Indexed: 01/17/2023]
Abstract
Dental pulp cells are a source of multipotent mesenchymal stem cells with a high proliferation rate and multilineage differentiation potential. This study investigated the photobiomodulated bioenergetic effects of mitochondria in osteoblasts that differentiated from human pulp stem cells. The systematic review followed PRISMA guidelines. The PICO question was formulated. Criteria for inclusion and exclusion were established prior to searches being performed on the PubMed/MEDLINE, Embase, and Scopus. Articles were identified and included if published in English within last 10 years; photobiomodulation or low-level laser therapy were discussed; the delivery parameters for dose and time were included and the studies focused on bioenergetics of osteoblast mitochondria. Studies excluded were non-human dental pulp tissue and in vivo studies. A total number of 110 articles were collated, 106 were excluded leaving a total of 4 articles. These studies demonstrated that in vitro use of photobiomodulation was performed using different laser and LED types; InGaAlP; InGaN; and InGaAsP with average wavelengths of 630 to 940 nm. Primary human osteoblastic STRO-1 and mesenchymal stem cell lineages were studied. Three out of four articles confirmed positive bioenergetic effects of photobiomodulation on mitochondria of osteoblasts derived from human pulp cells. This systematic review demonstrated a lack of adequate reporting of bioenergetics of osteoblast mitochondria after photobiomodulation treatment.
Collapse
Affiliation(s)
- Simone L Sleep
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia
| | - Deanne Skelly
- Environmental Futures Research Institute, Griffith University, Nathan, QLD, Australia.,School of Environment and Science, Griffith University, Nathan, QLD, Australia.,Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Robert M Love
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia
| | - Roy George
- School of Medicine and Dentistry, Griffith University, Gold Coast, Australia.
| |
Collapse
|
5
|
The effects of photobiomodulation on human dermal fibroblasts in vitro: A systematic review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 214:112100. [DOI: 10.1016/j.jphotobiol.2020.112100] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/28/2020] [Accepted: 11/30/2020] [Indexed: 12/16/2022]
|
6
|
Chaudary S, Karner L, Weidinger A, Meixner B, Rieger S, Metzger M, Zipperle J, Dungel P. In vitro effects of 635 nm photobiomodulation under hypoxia/reoxygenation culture conditions. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 209:111935. [PMID: 32622295 DOI: 10.1016/j.jphotobiol.2020.111935] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/15/2020] [Accepted: 06/10/2020] [Indexed: 12/18/2022]
Abstract
Photobiomodulation (PBM), especially in the red wavelength range, has been demonstrated to be an effective treatment option for superficial and chronic wounds. However, ischemia and subsequent reperfusion can further challenge wound healing. Therefore, we investigated the effect of pulsed red LED light at 635 nm on cellular function in an in-vitro model of hypoxia/reoxygenation (H/R) challenge. Mouse myoblasts and fibroblasts were incubated in oxygen-deprived starvation medium (hypoxia) for 3 h after which the media was changed to oxygenated, fully supplemented media to simulate reperfusion. Cells were then treated with pulsed red LED light at a wavelength of 635 nm at 40 mW/cm2. Mitochondrial respiratory activity, ATP production and ROS levels were analysed immediately post-illumination. The effects on cellular metabolic activity and proliferation were measured at 6 h and 24 h and apoptosis/necrosis was measured at 24 h post-illumination. Our results show that both cell types reacted differently to H/R challenge and PBM. PBM of H/R-challenged cells enhanced mitochondrial activity and rescued decreased ATP levels, with significant effects in fibroblasts. This was associated with increased cell proliferation rates in both cell types. The increase was again more pronounced in fibroblasts. Our study concluded that PBM with red LED light significantly restored ATP levels during H/R and effectively promoted cell growth under both normoxic and H/R conditions. In clinical applications, PBM has been repeatedly reported to resolve difficult clinical situations in which ischemia/reperfusion injuries are a major issue. Our study confirms the beneficial effects of PBM especially in H/R-challenged cells.
Collapse
Affiliation(s)
- Sidrah Chaudary
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Lisa Karner
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Adelheid Weidinger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Barbara Meixner
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Stefan Rieger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Magdalena Metzger
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Johannes Zipperle
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Peter Dungel
- Ludwig Boltzmann institute for experimental and clinical traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria.
| |
Collapse
|
7
|
Mokoena DR, Houreld NN, Dhilip Kumar SS, Abrahamse H. Photobiomodulation at 660 nm Stimulates Fibroblast Differentiation. Lasers Surg Med 2019; 52:671-681. [DOI: 10.1002/lsm.23204] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Dimakatso R. Mokoena
- Laser Research Centre, Faculty of Health SciencesUniversity of Johannesburg P.O. Box 17011 Doornfontein 2028 South Africa
| | - Nicolette N. Houreld
- Laser Research Centre, Faculty of Health SciencesUniversity of Johannesburg P.O. Box 17011 Doornfontein 2028 South Africa
| | - Sathish S. Dhilip Kumar
- Laser Research Centre, Faculty of Health SciencesUniversity of Johannesburg P.O. Box 17011 Doornfontein 2028 South Africa
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health SciencesUniversity of Johannesburg P.O. Box 17011 Doornfontein 2028 South Africa
| |
Collapse
|
8
|
Ravera S, Ferrando S, Agas D, De Angelis N, Raffetto M, Sabbieti MG, Signore A, Benedicenti S, Amaroli A. 1064 nm Nd:YAG laser light affects transmembrane mitochondria respiratory chain complexes. JOURNAL OF BIOPHOTONICS 2019; 12:e201900101. [PMID: 31033186 DOI: 10.1002/jbio.201900101] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/23/2019] [Accepted: 04/26/2019] [Indexed: 06/09/2023]
Abstract
Photobiomodulation (PBM) is a non-plant-cell manipulation through a transfer of energy by means of light sources at the non-ablative or thermal intensity. Authors showed that cytochrome-c-oxidase (complex IV) is the specific chromophore's target of PBM at the red (600-700 nm) and NIR (760-900 nm) wavelength regions. Recently, it was suggested that the infrared region of the spectrum could influence other chromospheres, despite the interaction by wavelengths higher than 900 nm with mitochondrial chromophores was not clearly demonstrated. We characterized the interaction between mitochondria respiratory chain, malate dehydrogenase, a key enzyme of Krebs cycle, and 3-hydroxyacyl-CoA dehydrogenase, an enzyme involved in the β-oxidation (two mitochondrial matrix enzymes) with the 1064 nm Nd:YAG (100mps and 10 Hz frequency mode) irradiated at the average power density of 0.50, 0.75, 1.00, 1.25 and 1.50 W/cm2 to generate the respective fluences of 30, 45, 60, 75 and 90 J/cm2 . Our results show the effect of laser light on the transmembrane mitochondrial complexes I, III, IV and V (adenosine triphosphate synthase) (window effects), but not on the extrinsic mitochondrial membrane complex II and mitochondria matrix enzymes. The effect is not due to macroscopical thermal change. An interaction of this wavelength with the Fe-S proteins and Cu-centers of respiratory complexes and with the water molecules could be supposed.
Collapse
Affiliation(s)
- Silvia Ravera
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Sara Ferrando
- Laboratory of New Model Organism (NeMo LAB), Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy
| | - Dimitrios Agas
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino (Macerata), Italy
| | - Nicola De Angelis
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genoa, Genoa, Italy
- Department of Dentistry, University of Technology MARA, Sungai Buloh, Malaysia
| | - Mirco Raffetto
- Department of Electrical, Electronic, Telecommunications Engineering and Naval Architecture, University of Genoa, Genoa, Italy
| | - Maria G Sabbieti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino (Macerata), Italy
| | - Antonio Signore
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genoa, Genoa, Italy
- Faculty of Therapeutic Stomatology, Institute of Dentistry, I. M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Stefano Benedicenti
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genoa, Genoa, Italy
| | - Andrea Amaroli
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genoa, Genoa, Italy
| |
Collapse
|
9
|
Rascalou A, Lamartine J, Poydenot P, Demarne F, Bechetoille N. Mitochondrial damage and cytoskeleton reorganization in human dermal fibroblasts exposed to artificial visible light similar to screen-emitted light. J Dermatol Sci 2018; 91:S0923-1811(18)30213-5. [PMID: 29764717 DOI: 10.1016/j.jdermsci.2018.04.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/24/2018] [Accepted: 04/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Artificial visible light is everywhere in modern life. Social communication confronts us with screens of all kinds, and their use is on the rise. We are therefore increasingly exposed to artificial visible light, the effects of which on skin are poorly known. OBJECTIVE The purpose of this study was to model the artificial visible light emitted by electronic devices and assess its effect on normal human fibroblasts. METHODS The spectral irradiance emitted by electronic devices was optically measured and equipment was developed to accurately reproduce such artificial visible light. Effects on normal human fibroblasts were analyzed on human genome microarray-based gene expression analysis. At cellular level, visualization and image analysis were performed on the mitochondrial network and F-actin cytoskeleton. Cell proliferation, ATP release and type I procollagen secretion were also measured. RESULTS We developed a device consisting of 36 LEDs simultaneously emitting blue, green and red light at distinct wavelengths (450 nm, 525 nm and 625 nm) with narrow spectra and equivalent radiant power for the three colors. A dose of 99 J/cm2 artificial visible light was selected so as not to induce cell mortality following exposure. Microarray analysis revealed 2984 light-modulated transcripts. Functional annotation of light-responsive genes revealed several enriched functions including, amongst others, the "mitochondria" and "integrin signaling" categories. Selected results were confirmed by real-time quantitative PCR, analyzing 24 genes representing these two categories. Analysis of micro-patterned culture plates showed marked fragmentation of the mitochondrial network and disorganization of the F-actin cytoskeleton following exposure. Functionally, there was considerable impairment of cell growth and spread, ATP release and type I procollagen secretion in exposed fibroblasts. CONCLUSION Artificial visible light induces drastic molecular and cellular changes in normal human fibroblasts. This may impede normal cellular functions and contribute to premature skin aging. The present results extend our knowledge of the effects of the low-energy wavelengths that are increasingly used to treat skin disorders.
Collapse
Affiliation(s)
| | - Jérôme Lamartine
- CNRS UMR 5305/LBTI, 7 Passage du Vercors, FR-69367, Lyon, France
| | - Pauline Poydenot
- CYTOO, Minatec - BHT Bât. 52, 7 Parvis Louis Néel, FR-38040, Grenoble, France
| | | | | |
Collapse
|
10
|
Amaroli A, Benedicenti A, Ravera S, Parker S, Selting W, Panfoli I, Benedicenti S. Short-pulse neodymium:yttrium–aluminium garnet (Nd:YAG 1064 nm) laser irradiation photobiomodulates mitochondria activity and cellular multiplication of Paramecium primaurelia (Protozoa). Eur J Protistol 2017; 61:294-304. [DOI: 10.1016/j.ejop.2017.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 06/07/2017] [Accepted: 06/07/2017] [Indexed: 11/26/2022]
|
11
|
de Souza Faria ALB, Conrado LAL, Vanzela LS, Villaverde AB, Munin E. Application of phototherapy for the healing of the navels of neonatal dairy calves. Lasers Med Sci 2017; 32:1579-1586. [PMID: 28717890 DOI: 10.1007/s10103-017-2283-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 07/05/2017] [Indexed: 11/30/2022]
Abstract
The present work evaluated the effects of LED light irradiation on the healing of the navels of neonatal dairy calves. Fifty-seven neonatal calves were divided into two groups. Animals had their umbilical stumps immersed in 10% iodine tincture for 60 s, and this process was repeated every 24 h for three consecutive days. The 29 animals in the first group did not receive LED therapy. The 28 animals in the second group received LED light irradiation at 640 nm with 300 mW power, 46.8 J/cm2 energy density, 60 s irradiation time, and 0.385 cm2 spot size. The animals were irradiated at four points (46.8 J/cm2 per point) evenly distributed around the insertion site of the umbilical stump every 24 h for three consecutive days. Irradiation with LED light was applied before the umbilical stumps were immersed in the iodine solution. The time after birth at which the umbilical stump fell off of each calf was noted. The umbilical stumps of all animals fell off by the 25th day of age. After the umbilical stump fell off, the healing of the remnant wound was followed up to the 30th day after birth. The area of the wound was measured on the 15th, 20th, and 25th day after birth using digital photographs and computer-assisted area measurements. A two-tailed unpaired t test was applied to analyze the falling off the umbilical stump, whereas a Kruskal-Wallis one-way ANOVA test with a Dunn's multiple comparison test was used for the wound size evolution. GraphPad Prisma 5.0® and GraphPad StatMate 2.00® were used for the statistical analysis. The results revealed that phototherapy hastened the falling off the umbilical stump, accelerated navel healing, and reduced the mortality rate in newborn calves. Therefore, this study introduced a preventive and adjuvant after birth treatment that proved to be effective in reducing the incidences of omphalitis and newborn mortality.
Collapse
Affiliation(s)
| | - Luis Augusto Lupato Conrado
- Universidade Camilo Castelo Branco (UNICASTELO), Rua Carolina Fonseca 584, Itaquera, São Paulo, SP, 08230-030, Brazil
| | - Luiz Sergio Vanzela
- Universidade Camilo Castelo Branco (UNICASTELO), Estrada Projetada F-1, s/n, Fazenda Santa Rita, Fernandópolis, SP, 15600-000, Brazil
| | - Antonio Balbin Villaverde
- Universidade Anhembi Morumbi (UAM), Rua Casa do Ator, 294 - 7° andar - Unidade 5 - Campus Vila Olímpia, São Paulo, SP, 04546-001, Brazil. .,Centro de Inovação, Tecnologia e Educação - CITE, Estrada Dr. Altino Bondensan, 500 Distrito de Eugênio de Melo, São José dos Campos, SP, 12247-016, Brazil.
| | - Egberto Munin
- Universidade Anhembi Morumbi (UAM), Rua Casa do Ator, 294 - 7° andar - Unidade 5 - Campus Vila Olímpia, São Paulo, SP, 04546-001, Brazil.,Centro de Inovação, Tecnologia e Educação - CITE, Estrada Dr. Altino Bondensan, 500 Distrito de Eugênio de Melo, São José dos Campos, SP, 12247-016, Brazil
| |
Collapse
|
12
|
Shingyochi Y, Kanazawa S, Tajima S, Tanaka R, Mizuno H, Tobita M. A Low-Level Carbon Dioxide Laser Promotes Fibroblast Proliferation and Migration through Activation of Akt, ERK, and JNK. PLoS One 2017; 12:e0168937. [PMID: 28045948 PMCID: PMC5207507 DOI: 10.1371/journal.pone.0168937] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 12/08/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Low-level laser therapy (LLLT) with various types of lasers promotes fibroblast proliferation and migration during the process of wound healing. Although LLLT with a carbon dioxide (CO2) laser was also reported to promote wound healing, the underlying mechanisms at the cellular level have not been previously described. Herein, we investigated the effect of LLLT with a CO2 laser on fibroblast proliferation and migration. MATERIALS AND METHODS Cultured human dermal fibroblasts were prepared. MTS and cell migration assays were performed with fibroblasts after LLLT with a CO2 laser at various doses (0.1, 0.5, 1.0, 2.0, or 5.0 J/cm2) to observe the effects of LLLT with a CO2 laser on the proliferation and migration of fibroblasts. The non-irradiated group served as the control. Moreover, western blot analysis was performed using fibroblasts after LLLT with a CO2 laser to analyze changes in the activities of Akt, extracellular signal-regulated kinase (ERK), and Jun N-terminal kinase (JNK), which are signaling molecules associated with cell proliferation and migration. Finally, the MTS assay, a cell migration assay, and western blot analysis were performed using fibroblasts treated with inhibitors of Akt, ERK, or JNK before LLLT with a CO2 laser. RESULTS In MTS and cell migration assays, fibroblast proliferation and migration were promoted after LLLT with a CO2 laser at 1.0 J/cm2. Western blot analysis revealed that Akt, ERK, and JNK activities were promoted in fibroblasts after LLLT with a CO2 laser at 1.0 J/cm2. Moreover, inhibition of Akt, ERK, or JNK significantly blocked fibroblast proliferation and migration. CONCLUSIONS These findings suggested that LLLT with a CO2 laser would accelerate wound healing by promoting the proliferation and migration of fibroblasts. Activation of Akt, ERK, and JNK was essential for CO2 laser-induced proliferation and migration of fibroblasts.
Collapse
Affiliation(s)
- Yoshiaki Shingyochi
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shigeyuki Kanazawa
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Satoshi Tajima
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Morikuni Tobita
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
- * E-mail:
| |
Collapse
|
13
|
Fallahnezhad S, Piryaei A, Tabeie F, Nazarian H, Darbandi H, Amini A, Mostafavinia A, Ghorishi SK, Jalalifirouzkouhi A, Bayat M. Low-level laser therapy with helium-neon laser improved viability of osteoporotic bone marrow-derived mesenchymal stem cells from ovariectomy-induced osteoporotic rats. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:98002. [PMID: 27685702 DOI: 10.1117/1.jbo.21.9.098002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
The purpose of this study was to evaluate the influences of helium–neon (He–Ne) and infrared (IR) lasers on the viability and proliferation rate of healthy and ovariectomy-induced osteoporotic (OVX) bone marrow mesenchymal stem cells (BMMSCs) in vitro. MSCs harvested from the BM of healthy and OVX rats were culture expanded. He–Ne and IR lasers were applied three times at energy densities of 0.6, 1.2, and 2.4??J/cm2 for BMMSCs. BMMSCs viability and proliferation rate were evaluated by MTT assay on days 2, 4, 6, 14, and 21. The results showed that healthy BMMSCs responded optimally to 0.6??J/cm2 using an IR laser after three times of laser radiation. Moreover, it was found that OVX-BMMSCs responded optimally to 0.6??J/cm2 with He–Ne laser and one-time laser radiation. It is concluded that the low-level laser therapy (LLLT) effect depends on the physiological state of the BMMSCs, type of the laser, wavelength, and number of laser sessions. The biostimulation efficiency of LLLT also depends on the delivered energy density. LLLT can enhance the viability and proliferation rate of healthy and especially osteoporotic autologous BMMSCs, which could be very useful in regenerative medicine.
Collapse
Affiliation(s)
- Somaye Fallahnezhad
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Abbas Piryaei
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Faraj Tabeie
- Shahid Beheshti University of Medical Sciences, Physiotherapy Research Centre, School of Rehabilitation Sciences, Department of Basic Sciences, and School of Medicine, Department of Nuclear Medicine, Damavand Street across from Bu Ali Hospital, Tehran, Iran
| | - Hamid Nazarian
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Hasan Darbandi
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Immunology, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Abdoldllah Amini
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Ataroalsadat Mostafavinia
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Seyed Kamran Ghorishi
- Qom University, Department of Statistics, Faculty of Sciences, Old Road of Isfahan, Qom 3716146611, Iran
| | - Ali Jalalifirouzkouhi
- Shahid Beheshti University of Medical Sciences, Cellular and Molecular Biology Research Center, School of Medicine, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| | - Mohammad Bayat
- Shahid Beheshti University of Medical Sciences, School of Medicine, Department of Biology and Anatomical Sciences, Koodakyar Street, Danshjoo Boulevard, Velenjak, Shahid Chamran Highway, PO Box 19395/4719, Tehran 1985717443, Iran
| |
Collapse
|
14
|
Effect of Nd:YAG Low Level Laser Therapy on Human Gingival Fibroblasts. Int J Dent 2015; 2015:258941. [PMID: 26504463 PMCID: PMC4609450 DOI: 10.1155/2015/258941] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/05/2015] [Accepted: 09/09/2015] [Indexed: 11/26/2022] Open
Abstract
Aim. To evaluate the effect of Low Level Laser Therapy (LLLT) on human gingival fibroblasts in terms of proliferation and growth factors' secretion (EGF, bFGF, and VEGF). Materials and Methods. Primary cultures of keratinized mucosa fibroblasts were irradiated by a Nd:YAG laser 1064 nm with the following energy densities: 2.6 J/cm2, 5.3 J/cm2, 7.9 J/cm2, and 15.8 J/cm2. Controls were not irradiated. Cultures were examined for cell proliferation and growth factors' secretion after 24, 48, and 72 hours. All experimental procedures were performed in duplicate. Data were analyzed by Student's t-test (p < 0.05). Results. All laser-irradiation doses applied promoted a higher cell proliferation at 48 hours in a dose-response relationship compared to controls. This difference reached statistical significance for the cultures receiving 15.8 J/cm2 (p = 0.03). Regarding EGF, all laser irradiation doses applied promoted a higher secretion at 48 hours in a reverse dose-response pattern compared to controls. This difference reached statistical significance for the cultures receiving 2.6 J/cm2 (p = 0.04). EGF levels at the other time points, bFGF, and VEGF showed a random variation between the groups. Conclusion. Within the limits of this study, LLLT (Nd:YAG) may induce gingival fibroblasts' proliferation and upregulate the secretion of EGF. Further studies are needed to confirm these results.
Collapse
|
15
|
Zaccara IM, Ginani F, Mota-Filho HG, Henriques ÁCG, Barboza CAG. Effect of low-level laser irradiation on proliferation and viability of human dental pulp stem cells. Lasers Med Sci 2015; 30:2259-64. [DOI: 10.1007/s10103-015-1803-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 08/27/2015] [Indexed: 01/09/2023]
|
16
|
In vitro study on the safety of near infrared laser therapy in its potential application as postmastectomy lymphedema treatment. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 151:285-96. [PMID: 26355716 DOI: 10.1016/j.jphotobiol.2015.08.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 07/29/2015] [Accepted: 08/11/2015] [Indexed: 12/18/2022]
Abstract
Clinical studies demonstrated the effectiveness of laser therapy in the management of postmastectomy lymphedema, a discomforting disease that can arise after surgery/radiotherapy and gets progressively worse and chronic. However, safety issues restrict the possibility to treat cancer patients with laser therapy, since the effects of laser radiation on cancer cell behavior are not completely known and the possibility of activating postmastectomy residual cancer cells must be considered. This paper reports the results of an in vitro study aimed to investigate the effect of a class IV, dual-wavelength (808 nm and 905 nm), NIR laser system on the behavior of two human breast adenocarcinoma cell lines (namely, MCF7 and MDA-MB361 cell lines), using human dermal fibroblasts as normal control. Cell viability, proliferation, apoptosis, cell cycle and ability to form colonies were analyzed in order to perform a cell-based safety testing of the laser treatment in view of its potential application in the management of postmastectomy lymphedema. The results showed that, limited to the laser source, treatment conditions and experimental models used, laser radiation did not significantly affect the behavior of human breast adenocarcinoma cells, including their clonogenic efficiency. Although these results do not show any significant laser-induced modification of cancer cell behavior, further studies are needed to assess the possibility of safely applying NIR laser therapy for the management of postmastectomy lymphedema.
Collapse
|
17
|
Phototherapy improves wound healing in rats subjected to high-fat diet. Lasers Med Sci 2015; 30:1481-8. [PMID: 25862476 DOI: 10.1007/s10103-015-1745-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 03/18/2015] [Indexed: 12/25/2022]
Abstract
This study aimed to compare the phototherapy effects on wound healing in rats submitted to normal and high-fat diets. Thirty-six rats received normal lipidic diet (NL) and 36 high lipidic (HL) diet for 45 days. The nutritional status was measured by body mass, blood glucose, total cholesterol, and triglycerides levels. Four experimental groups were performed according light (L) therapy applied "on" or "off" (660 nm, 100 mW, 70 J/cm(2), 2 J) on 1.5-mm-punched dorsum skin wounds as NLL+, NLL-, HLL+, and HLL-. The wound healing rate (WHR) and oxidative stress markers were analyzed on 2nd, 7th, and 14th days. Despite no difference among body mass, the HL rats presented higher blood glucose, total cholesterol, and triglycerides levels than NL rats. Respectively, on the 2nd and 14th days, the HLL+ group presented the highest WHRs (0.38 ± 0.16/0.97 ± 0.02) among all groups, while the HLL- (-0.002 ± 0.12/0.81 ± 12.1) the lowest WHRs. Hydroxyproline level was lower in HLL- (6.41 ± 1.09 μg/mg) than HLL+ (7.71 ± 0.61 μg/mg) and also NLL+ (9.33 ± 0.84 μg/mg). HLL+ presented oxidative stress markers similar to normal control group (NLL-) during follow up and highest antioxidant defense on 7th day. The results showed phototherapy accelerated the cutaneous wound healing by modulating oxidative stress in rats with metabolic disorders under a high-fat diet.
Collapse
|
18
|
Leite SN, Andrade TAMD, Masson-Meyers DDS, Leite MN, Enwemeka CS, Frade MAC. Phototherapy promotes healing of cutaneous wounds in undernourished rats. An Bras Dermatol 2015; 89:899-904. [PMID: 25387494 PMCID: PMC4230658 DOI: 10.1590/abd1806-4841.20143356] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Accepted: 01/16/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Various studies have shown that phototherapy promotes the healing of cutaneous wounds. OBJECTIVE To investigate the effect of phototherapy on healing of cutaneous wounds in nourished and undernourished rats. METHODS Forty rats, 20 nourished plus 20 others rendered marasmus with undernourishment, were assigned to four equal groups: nourished sham, nourished Light Emitting Diode treated, undernourished sham and undernourished Light Emitting Diode treated. In the two treated groups, two 8-mm punch wounds made on the dorsum of each rat were irradiated three times per week with 3 J/cm2 sq cm of combined 660 and 890 nm light; wounds in the other groups were not irradiated. Wounds were evaluated with digital photography and image analysis, either on day 7 or day 14, with biopsies obtained on day 14 for histological studies. RESULTS Undernourishment retarded the mean healing rate of the undernourished sham wounds (p < 0.01), but not the undernourished Light emission diode treated wounds, which healed significantly faster (p < 0.001) and as fast as the two nourished groups. Histological analysis showed a smaller percentage of collagen in the undernourished sham group compared with the three other groups, thus confirming our photographic image analysis data. CONCLUSION Phototherapy reverses the adverse healing effects of undernourishment. Similar beneficial effects may be achieved in patients with poor nutritional status.
Collapse
|
19
|
Dillenburg CS, Martins MAT, Munerato MC, Marques MM, Carrard VC, Sant'Ana Filho M, Castilho RM, Martins MD. Efficacy of laser phototherapy in comparison to topical clobetasol for the treatment of oral lichen planus: a randomized controlled trial. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:068002. [PMID: 24887747 DOI: 10.1117/1.jbo.19.6.068002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
Oral lichen planus (OLP) is a relatively common chronic mucocutaneous inflammatory disease and a search for novel therapeutic options has been performed. We sought to compare the efficacy of laser phototherapy (LPT) to topical clobetasol propionate 0.05% for the treatment of atrophic and erosive OLP. Forty-two patients with atrophic/erosive OLP were randomly allocated to two groups: clobetasol group (n=21): application of topical clobetasol propionate gel (0.05%) three times a day; LPT group (n=21): application of laser irradiation using InGaAlP diode laser three times a week. Evaluations were performed once a week during treatment (Days 7, 14, 21, and 30) and in four weeks (Day 60) and eight weeks (Day 90) after treatment. At the end of treatment (Day 30), significant reductions in all variables were found in both groups. The LPT group had a higher percentage of complete lesion resolution. At follow-up periods (Days 60 and 90), the LPT group maintained the clinical pattern seen at Day 30, with no recurrence of the lesions, whereas the clobetasol group exhibited worsening for all variables analyzed. These findings suggest that the LPT proved more effective than topical clobetasol 0.05% for the treatment of OLP.
Collapse
Affiliation(s)
- Caroline Siviero Dillenburg
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Pathology, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| | - Marco Antonio Trevizani Martins
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Medicine, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| | - Maria Cristina Munerato
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Medicine, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| | - Márcia Martins Marques
- University of São Paulo, School of Dentistry, Department of Dentistry, São Paulo, São Paulo 05508-000, Brazil
| | - Vinícius Coelho Carrard
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Pathology, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| | - Manoel Sant'Ana Filho
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Pathology, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| | - Rogério Moraes Castilho
- University of Michigan, School of Dentistry, Laboratory of Epithelial Biology, Department of Periodontics and Oral Medicine, Ann Arbor, Michigan 48109-1078
| | - Manoela Domingues Martins
- Universidade Federal do Rio Grande do Sul, School of Dentistry, Department of Oral Pathology, Porto Alegre, Rio Grande do Sul 90035-003, Brazil
| |
Collapse
|
20
|
Fushimi T, Inui S, Nakajima T, Ogasawara M, Hosokawa K, Itami S. Green light emitting diodes accelerate wound healing: characterization of the effect and its molecular basis in vitro and in vivo. Wound Repair Regen 2012; 20:226-35. [PMID: 22380691 DOI: 10.1111/j.1524-475x.2012.00771.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Because light-emitting diodes (LEDs) are low-coherent, quasimonochromatic, and nonthermal, they are an alternative for low level laser therapy, and have photobiostimulative effects on tissue repair. However, the molecular mechanism(s) are unclear, and potential effects of blue and/or green LEDs on wound healing are still unknown. Here, we investigated the effects of red (638 nm), blue (456 nm), and green (518 nm) LEDs on wound healing. In an in vivo study, wound sizes in the skin of ob/ob mice were significantly decreased on day 7 following exposure to green LEDs, and complete reepithelialization was accelerated by red and green LEDs compared with the control mice. To better understand the molecular mechanism(s) involved, we investigated the effects of LEDs on human fibroblasts in vitro by measuring mRNA and protein levels of cytokines secreted by fibroblasts during the process of wound healing and on the migration of HaCat keratinocytes. The results suggest that some cytokines are significantly increased by exposure to LEDs, especially leptin, IL-8, and VEGF, but only by green LEDs. The migration of HaCat keratinocytes was significantly promoted by red or green LEDs. In conclusion, we demonstrate that green LEDs promote wound healing by inducing migratory and proliferative mediators, which suggests that not only red LEDs but also green LEDs can be a new powerful therapeutic strategy for wound healing.
Collapse
Affiliation(s)
- Tomohiro Fushimi
- Department of Regenerative Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
21
|
de Villiers JA, Houreld NN, Abrahamse H. Influence of low intensity laser irradiation on isolated human adipose derived stem cells over 72 hours and their differentiation potential into smooth muscle cells using retinoic acid. Stem Cell Rev Rep 2012; 7:869-82. [PMID: 21373882 DOI: 10.1007/s12015-011-9244-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Human adipose derived stem cells (hADSCs), with their impressive differentiation potential, may be used in autologous cell therapy or grafting to replace damaged tissues. Low intensity laser irradiation (LILI) has been shown to influence the behaviour of various cells, including stem cells. AIMS This study aimed to investigate the effect of LILI on hADSCs 24, 48 or 72 h post-irradiation and their differentiation potential into smooth muscle cells (SMCs). METHODOLOGY hADSCs were exposed to a 636 nm diode laser at a fluence of 5 J/cm(2). hADSCs were differentiated into SMCs using retinoic acid (RA). Morphology was assessed by inverted light and differential interference contrast (DIC) microscopy. Proliferation and viability of hADSCs was assessed by optical density (OD), Trypan blue staining and adenosine triphosphate (ATP) luminescence. Expression of stem cell markers, β1-integrin and Thy-1, and SMC markers, smooth muscle alpha actin (SM-αa), desmin, smooth muscle myosin heavy chain (SM-MHC) and smoothelin, was assessed by immunofluorescent staining and real-time reverse transcriptase polymerase chain reaction (RT-PCR). RESULTS Morphologically, hADSCs did not show any differences and there was an increase in viability and proliferation post-irradiation. Immunofluorescent staining showed expression of β1-integrin and Thy-1 72 h post-irradiation. RT-PCR results showed a down regulation of Thy-1 48 h post-irradiation. Differentiated SMCs were confirmed by morphology and expression of SMC markers. CONCLUSION LILI at a wavelength of 636 nm and a fluence of 5 J/cm(2) does not induce differentiation of isolated hADSCs over a 72 h period, and increases cellular viability and proliferation. hADSCs can be differentiated into SMCs within 14 days using RA.
Collapse
Affiliation(s)
- Jennifer Anne de Villiers
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
| | | | | |
Collapse
|
22
|
Bonatti S, Hochman B, Tucci-Viegas VM, Furtado F, Pinfildi CE, Pedro AC, Ferreira LM. In vitro effect of 470 nm LED (Light Emitting Diode) in keloid fibroblasts. Acta Cir Bras 2011; 26:25-30. [PMID: 21271200 DOI: 10.1590/s0102-86502011000100006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 10/19/2010] [Indexed: 11/21/2022] Open
Abstract
PURPOSE To quantify keloid fibroblasts after irradiation with 470nm blue LED, in vitro. METHODS Fibroblasts from keloid and adjacent skin have been obtained from 6 patients. Cells have been cultivated and maintained in DMEM culture medium. In Petri dishes, they were irradiated with energy doses of 6J, 12J and 18J. After 24 h, counting was done by the average of the triplicates for each sample. RESULTS There were no significant differences in the number of irradiated keloid fibroblasts at the studied doses (p=0.261). In adjacent skin fibroblasts, differences were observed (p=0.025) concerning the doses of 18 J and 6 J (p=0.03). CONCLUSIONS There was a reduction in the number of adjacent skin fibroblasts irradiated with 470nm blue LED at the energy dose of 18 J compared to the ones irradiated at the energy dose of 6 J. There were no changes in keloid fibroblasts counting at any of the doses applied, 24 h after irradiation.
Collapse
|
23
|
Peplow PV, Chung TY, Ryan B, Baxter GD. Laser Photobiomodulation of Gene Expression and Release of Growth Factors and Cytokines from Cells in Culture: A Review of Human and Animal Studies. Photomed Laser Surg 2011; 29:285-304. [DOI: 10.1089/pho.2010.2846] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Philip V. Peplow
- Department of Anatomy & Structural Biology, University of Otago, Dunedin, New Zealand
| | - Tzu-Yun Chung
- Department of Anatomy & Structural Biology, University of Otago, Dunedin, New Zealand
| | - Brigid Ryan
- Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - G. David Baxter
- Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| |
Collapse
|
24
|
Carvalho RLDP, Alcântara PS, Kamamoto F, Cressoni MDC, Casarotto RA. Effects of low-level laser therapy on pain and scar formation after inguinal herniation surgery: a randomized controlled single-blind study. Photomed Laser Surg 2010; 28:417-22. [PMID: 19821701 DOI: 10.1089/pho.2009.2548] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the efficacy of an infrared GaAlAs laser operating with a wavelength of 830 nm in the postsurgical scarring process after inguinal-hernia surgery. BACKGROUND Low-level laser therapy (LLLT) has been shown to be beneficial in the tissue-repair process, as previously demonstrated in tissue culture and animal experiments. However, there is lack of studies on the effects of LLLT on postsurgical scarring of incisions in humans using an infrared 830-nm GaAlAs laser. METHOD Twenty-eight patients who underwent surgery for inguinal hernias were randomly divided into an experimental group (G1) and a control group (G2). G1 received LLLT, with the first application performed 24 h after surgery and then on days 3, 5, and 7. The incisions were irradiated with an 830-nm diode laser operating with a continuous power output of 40 mW, a spot-size aperture of 0.08 cm(2) for 26 s, energy per point of 1.04 J, and an energy density of 13 J/cm(2). Ten points per scar were irradiated. Six months after surgery, both groups were reevaluated using the Vancouver Scar Scale (VSS), the Visual Analog Scale, and measurement of the scar thickness. RESULTS G1 showed significantly better results in the VSS totals (2.14 +/- 1.51) compared with G2 (4.85 +/- 1.87); in the thickness measurements (0.11 cm) compared with G2 (0.19 cm); and in the malleability (0.14) compared with G2 (1.07). The pain score was also around 50% higher in G2. CONCLUSION Infra-red LLLT (830 nm) applied after inguinal-hernia surgery was effective in preventing the formation of keloids. In addition, LLLT resulted in better scar appearance and quality 6 mo postsurgery.
Collapse
|
25
|
Peplow PV, Chung TY, Baxter GD. Laser Photobiomodulation of Proliferation of Cells in Culture: A Review of Human and Animal Studies. Photomed Laser Surg 2010; 28 Suppl 1:S3-40. [DOI: 10.1089/pho.2010.2771] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Philip V. Peplow
- Department of Anatomy & Structural Biology, University of Otago, New Zealand
| | - Tzu-Yun Chung
- Department of Anatomy & Structural Biology, University of Otago, New Zealand
| | - G. David Baxter
- Centre for Physiotherapy Research, School of Physiotherapy, University of Otago, New Zealand
| |
Collapse
|
26
|
Barolet D, Duplay P, Jacomy H, Auclair M. Importance of pulsing illumination parameters in low-level-light therapy. JOURNAL OF BIOMEDICAL OPTICS 2010; 15:048005. [PMID: 20799848 DOI: 10.1117/1.3477186] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The influence of emission parameters in low-level-light therapy on cellular responses is not yet fully understood. This study assessed the impact of various light delivery modes on collagen production in human primary fibroblast cultured in monolayers after three treatments with red light-emitting diode illumination (630 nm, 8 J/cm(2)). Human type I collagen was measured in cell culture supernatants with procollagen type I C-peptide enzyme immunoassay. Results demonstrated that, 72 h post-baseline, specific microsecond pulsing patterns had a more favorable impact on the ability of fibroblasts to produce collagen de novo than comparative conditions of continuous wave, pulsed 50% duty cycle, and millisecond pulsing domains. The cascade of events leading to collagen production by red illumination may be explained by the photodissociation of nitric oxide from cytochrome c oxidase. Short and intermittent light delivery might enhance this cellular event.
Collapse
Affiliation(s)
- Daniel Barolet
- RoseLab Skin Optics Laboratory, Montreal, Quebec, Canada.
| | | | | | | |
Collapse
|
27
|
Evans DH, Abrahamse H. A review of laboratory-based methods to investigate second messengers in low-level laser therapy (LLLT). ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.mla.2009.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
28
|
Skopin MD, Molitor SC. Effects of near-infrared laser exposure in a cellular model of wound healing. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2009; 25:75-80. [PMID: 19292782 DOI: 10.1111/j.1600-0781.2009.00406.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Clinical studies have demonstrated beneficial outcomes for low-level laser therapy (LLLT) using near-infrared (NIR) wavelengths. It has been hypothesized that the benefits of NIR LLLT are due in part to the thermal effects of NIR exposure. However, it is not clear whether photochemical interactions between NIR light and superficial tissues contribute to beneficial outcomes. To investigate the photochemical effects of NIR exposure, the efficacy of 980 nm NIR LLLT on human fibroblast growth rates is investigated using an in vitro model of wound healing. METHODS A small pipette is used to induce a wound in fibroblast cell cultures, which are imaged at specific time intervals over 48 h and exposed to a range of laser doses (1.5-66 J/cm(2)) selected to encompass the range of doses used during other in vivo and in vitro studies. For each image acquired, wound sizes were quantified using a novel application of existing image processing algorithms. RESULTS Cell growth rates were compared across different laser exposure intensities with the same exposure duration, and across different laser exposure durations with the same exposure intensity. Exposure to low- and medium-intensity laser light accelerates cell growth, whereas high-intensity light negated the beneficial effects of laser exposure. Cell growth was accelerated over a wide range of exposure durations using medium-intensity laser light, with no significant inhibition of cell growth at the longest exposure durations used in this study. CONCLUSION Low-level exposure to 980 nm laser light can accelerate wound healing in vitro without measurable temperature increases. However, these results also demonstrate the need for appropriate supervision of laser therapy sessions to prevent overexposure to NIR laser light that may inhibit cell growth rates observed in response to lower intensity laser exposure.
Collapse
Affiliation(s)
- Mark D Skopin
- Department of Bioengineering, University of Toledo, Toledo, OH 43606-3390, USA
| | | |
Collapse
|
29
|
Iordanou P, Lykoudis EG, Athanasiou A, Koniaris E, Papaevangelou M, Fatsea T, Bellou P. Effect of visible and infrared polarized light on the healing process of full-thickness skin wounds: an experimental study. Photomed Laser Surg 2009; 27:261-7. [PMID: 18687058 DOI: 10.1089/pho.2008.2237] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE AND BACKGROUND DATA Polarized light has already been experimentally and clinically used in an effort to promote wound healing, but the findings have been equivocal. The aim of this study was to evaluate the effect of visible and infrared polarized light of a specific range of wavelength (580-3400 nm) on the secondary healing of full-thickness skin wounds in rats. MATERIALS AND METHODS Forty male Wistar rats were used, divided in two groups of 20 animals each. A standardized open full-thickness skin wound was created on the back of each animal. In the first group the rats were exposed to polarized light (40 mW/cm(2) and 2.4 J/cm(2)) for 7 min on a daily basis (total daily dose = 16.8 J/cm(2)), while the second group acted as controls. Clinical and histological evaluation of wound healing were performed on days 5, 10, 15, and 20 post-wound. The size of the wounds was measured with the use of planimetry, whereas epithelialization, inflammatory response, neovascularization, and collagen formation were histologically assessed. RESULTS According to our findings, the group exposed to light therapy showed statistically significantly faster epithelialization seen on days 10 and 15 post-wound compared to controls, as well as better quality of the healing process (although not statistically significantly) at all time points. CONCLUSION In conclusion, this specific fraction of polarized light seems to have beneficial effects on wound healing, leading to faster epithelialization and qualitatively better wound healing.
Collapse
Affiliation(s)
- Panagiota Iordanou
- Technological Educational Institute of Athens, Ioannina University School of Medicine, Ioannina, Greece
| | | | | | | | | | | | | |
Collapse
|
30
|
Whinfield AL, Aitkenhead I. The light revival: does phototherapy promote wound healing? A review. Foot (Edinb) 2009; 19:117-24. [PMID: 20307462 DOI: 10.1016/j.foot.2009.01.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Revised: 01/09/2009] [Accepted: 01/26/2009] [Indexed: 02/04/2023]
Abstract
BACKGROUND Throughout history, light has been recognised as a potential source of healing. The introduction of lasers made it possible to modify and control light for optimum therapeutic use. AIM This paper reviews recent clinical trials that test phototherapy on human models in order to assess the value of phototherapy in routine wound care. METHOD A literature search was undertaken using a variety of sources including online databases. RESULTS The results of numerous in vitro and animal investigations suggest that phototherapy may stimulate cell activity and promote tissue repair. Reports of human clinical trials are relatively few. There is inconsistency of selected treatment parameters amongst studies testing the effect of phototherapy on wound healing. Clinical trials using human models do not provide sufficient evidence to establish the usefulness of phototherapy as an effective tool in wound care regimes. CONCLUSION Further well designed research trials are required to determine the true value of phototherapy in routine wound care.
Collapse
Affiliation(s)
- A L Whinfield
- Department of General Practice and Primary Care, Kings College London School of Medicine, 5 Lambeth Walk, London, UK.
| | | |
Collapse
|
31
|
Abstract
Light-emitting diode photobiomodulation is the newest category of nonthermal light therapies to find its way to the dermatologic armamentarium. In this article, we briefly review the literature on the development of this technology, its evolution within esthetic and medical dermatology, and provide practical and technical considerations for use in various conditions. This article also focuses on the specific cell-signaling pathways involved and how the mechanisms at play can be put to use to treat a variety of cutaneous problems as a stand-alone application and/or complementary treatment modality or as one of the best photodynamic therapy light source.
Collapse
Affiliation(s)
- Daniel Barolet
- RoseLab Skin Optics Research Laboratory, 3333 Graham Blvd., Montreal, Quebec, Canada.
| |
Collapse
|
32
|
Jankowska A, Wiecek P, Burczynska B. Effect of photodynamic therapy on proliferation and apoptosis of 3T3 fibroblasts and HeLa cells. Photomed Laser Surg 2009; 26:343-7. [PMID: 18647090 DOI: 10.1089/pho.2007.2199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of the study was to test the effect of photodynamic therapy on fibroblast proliferation in vitro using protoporphyrin IX as a photosensitizer. BACKGROUND DATA The abnormal proliferation of synovial tissue serves as a propagator of immune response and tissue damage in rheumatoid arthritis. Since the synovial fibroblasts mediate most relevant pathways of joint destruction, they constitute an important target for novel therapeutic approaches. Photodynamic therapy, which is the clinically applied treatment for various tumors, as well as for some non-oncologic diseases, is based on administration of an exogenous photosensitizer which is used to induce cell death of fibroblast cells. MATERIALS AND METHODS The photosensitizing effects of protoporphyrin IX (PpIX) were studied in the 3T3 cell line that served as a model of fibroblasts and HeLa cells cultured in vitro. RESULTS The number of fibroblasts and HeLa cells treated with photo-activated PpIX decreased significantly. The compound affects the viability of study cells, causing necrosis of 3T3 cells and apoptosis of HeLa cells. CONCLUSIONS The light-activated protoporphyrin affected proliferation of both 3T3 and HeLa cells. No effects of the phototherapy were seen in the form of apoptosis of 3T3 cells, whereas the induction of cell death in HeLa cells was detected.
Collapse
Affiliation(s)
- Anna Jankowska
- Department of Cell Biology, University of Medical Sciences, Rokietnicka, Poznan, Poland.
| | | | | |
Collapse
|
33
|
Mbene AB, Houreld NN, Abrahamse H. DNA damage after phototherapy in wounded fibroblast cells irradiated with 16J/cm2. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 94:131-7. [DOI: 10.1016/j.jphotobiol.2008.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 11/04/2008] [Accepted: 11/12/2008] [Indexed: 11/27/2022]
|