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Ferro AP, de Jesus Guirro RR, Orellana MD, de Santis GC, Farina Junior JA, de Oliveira Guirro EC. Photobiomodulation with laser and led on mesenchymal stem cells viability and wound closure in vitro. Lasers Med Sci 2024; 39:205. [PMID: 39088075 DOI: 10.1007/s10103-024-04159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 07/25/2024] [Indexed: 08/02/2024]
Abstract
Mesenchymal stem cells can differentiate into specific cell lineages in the tissue repair process. Photobiomodulation with laser and LED is used to treat several comorbidities, can interfere in cell proliferation and viability, in addition to promoting responses related to the physical parameters adopted. Evaluate and compare the effects of laser and LED on mesenchymal cells, with different energy doses and different wavelengths, in addition to viability and wound closure. Mesenchymal stem cells derived from human adipocytes were irradiated with laser (energy of 0.5 J, 2 J and 4 J, wavelength of 660 nm and 830 nm), and LED (energy of 0.5 J, 2 J and 4 J, where lengths are 630 nm and 850 nm). The wound closure process was evaluated through monitoring the reduction of the lesion area in vitro. Viability was determined by analysis with Hoechst and Propidium Iodide markers, and quantification of viable and non-viable cells respectively Data distributions were analyzed using the Shapiro-Wilk test. Homogeneity was analyzed using Levene's test. The comparison between the parameters used was analyzed using the Two-way ANOVA test. The T test was applied to data relating to viability and lesion area. For LED photobiomodulation, only the 630 nm wavelength obtained a significant result in 24, 48 and 72 h (p = 0,027; p = 0,024; p = 0,009). The results related to the in vitro wound closure test indicate that both photobiomodulation with laser and LED demonstrated significant results considering the time it takes to approach the edges (p < 0.05). Considering the in vitro experimental conditions of the study, it is possible to conclude that the physical parameters of photobiomodulation, such as energy and wavelength, with laser or LED in mesenchymal stem cells, can play a potential role in cell viability and wound closure.
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Affiliation(s)
- Ana Paula Ferro
- Department of Health Sciences, Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, Bandeirantes Avenue, 3900, Monte Alegre, CEP 14049-900, Ribeirão Preto, São Paulo, Brazil.
| | - Rinaldo Roberto de Jesus Guirro
- Department of Health Sciences, Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, Bandeirantes Avenue, 3900, Monte Alegre, CEP 14049-900, Ribeirão Preto, São Paulo, Brazil
| | - Maristela Delgado Orellana
- Cell Biology Laboratory, Ribeirão Preto Blood Center Foundation, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Gil Cunha de Santis
- Cell Therapy Laboratory, Regional Blood Center of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Jayme Adriano Farina Junior
- Department of Surgery, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Elaine Caldeira de Oliveira Guirro
- Department of Health Sciences, Postgraduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, Bandeirantes Avenue, 3900, Monte Alegre, CEP 14049-900, Ribeirão Preto, São Paulo, Brazil
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Furtado GS, Martin V, Araújo R, Gomes PS, Lago ADN. Osteoinductive activity of photobiomodulation in an organotypic bone model. Photodiagnosis Photodyn Ther 2024; 45:103936. [PMID: 38104705 DOI: 10.1016/j.pdpdt.2023.103936] [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] [Received: 11/03/2023] [Revised: 12/08/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Photobiomodulation (PBM) is a technique that harnesses non-ionizing light at specific wavelengths, triggering the modulation of metabolic pathways, engendering favourable biological outcomes that reduce inflammation and foster enhanced tissue healing and regeneration. PBM holds significant promise for bone tissue applications due to its non-invasive nature and ability to stimulate cellular activity and vascularization within the healing framework. Notwithstanding, the impact of PBM on bone functionality remains largely undisclosed, particularly in the absence of influencing factors such as pathologies or regenerative therapies. This study aims to investigate the potential effects of PBM using red (660 nm) (RED) and near-infrared (808 nm) (NIR) wavelengths within an ex vivo bone culture system - the organotypic embryonic chicken femur model. A continuous irradiation mode was used, administering a total energy dose of 1.0 J, at an intensity of 100 mW for 10 s, which was repeated four times over the course of the 11-day culture period. The primary focus is on characterizing the expression of pivotal osteoblastic genes, the maturation and deposition of collagen, and the formation of bone mineral. Exposing femora to both RED and NIR wavelengths led to a notable increase in the expression of osteochondrogenic transcription factors (i.e., SOX9 and RUNX2), correlating with enhanced mineralization. Notably, NIR irradiation further elevated the expression of bone matrix-related genes and fostered enhanced deposition and maturation of fibrillar collagen. This study demonstrates that PBM has the potential to enhance osteogenic functionality within a translational organotypic bone culture system, with the NIR wavelength showing remarkable capabilities in augmenting the formation and maturation of the collagenous matrix.
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Affiliation(s)
- Guilherme Silva Furtado
- Graduate Student in the Postgraduate Program in Dentistry at the Federal University of Maranhão, Av. dos Portugueses, 1966, Bacanga, São Luís 65080-805, Brazil
| | - Victor Martin
- DDS, MSc and Graduate student at Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, Porto 4200-393, Portugal; REQUIMTE/LAQV, University of Porto, Praça Coronel Pacheco, 15, Porto 4050-453, Portugal
| | - Rita Araújo
- DDS, MSc and Graduate student at Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, Porto 4200-393, Portugal; REQUIMTE/LAQV, University of Porto, Praça Coronel Pacheco, 15, Porto 4050-453, Portugal
| | - Pedro Sousa Gomes
- REQUIMTE/LAQV, University of Porto, Praça Coronel Pacheco, 15, Porto 4050-453, Portugal; DDS, MSc, PhD Full Professor at Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Porto, Portugal.
| | - Andréa Dias Neves Lago
- DDS, MSc, PhD, Associate Professor of the Postgraduate Program in Dentistry at the Federal University of Maranhão, São Luís, Maranhão, Av. dos Portugueses, 1966, Bacanga, São Luís 65080-805, Brazil
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Garzón J, Baldion PA, Grajales M, Escobar LM. Response of osteoblastic cells to low-level laser treatment: a systematic review. Lasers Med Sci 2022; 37:3031-3049. [PMID: 35751706 DOI: 10.1007/s10103-022-03587-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/31/2022] [Indexed: 12/11/2022]
Abstract
Low-level laser therapy (LLLT)-induced photobiomodulation (PBM) stimulates bone tissue regeneration by inducing osteoblast differentiation and mitochondrial activation. However, the role of reactive oxygen species (ROS) in this process remains controversial. The aim of this systematic review was to collect and analyze the available literature on the cellular and molecular effects of LLLT on osteoblasts and the role of ROS in this process. A search was conducted in PubMed, ScienceDirect, Scopus, and Web of Science. Studies published in English over the past 15 years were selected. Fourteen articles were included with moderate (n = 9) and low risk of bias (n = 5). Thirteen studies reported the use of diode lasers with wavelengths (λ) between 635 and 980 nm. One study used an Nd:YAG laser (λ1064 nm). The most commonly used λ values were 808 and 635 nm. The energy densities ranged from 0.378 to 78.75 J/cm2, and irradiation times from 1.5 to 300 s. Most studies found increases in proliferation, ATP synthesis, mitochondrial activity, and osteoblastic differentiation related to moderate and dose-dependent increases in intracellular ROS levels. Only two studies reported no significant changes. The data presented heterogeneity owing to the variety of LLLT protocols. Although several studies have shown a positive role of ROS in the induction of proliferation, migration, and differentiation of different cell types, further research is required to determine the specific role of ROS in the osteoblastic cell response and the molecular mechanisms involved in triggering previously reported cellular events.
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Affiliation(s)
- Juliana Garzón
- Grupo de Investigaciones Básicas Y Aplicadas en Odontología (IBAPO), Departamento de Salud Oral, Facultad de Odontología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Paula Alejandra Baldion
- Departamento de Salud Oral Facultad de Odontología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Marggie Grajales
- Departamento de Salud Oral Facultad de Odontología, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Lina M Escobar
- Grupo de Investigaciones Básicas Y Aplicadas en Odontología (IBAPO), Departamento de Salud Oral, Facultad de Odontología, Universidad Nacional de Colombia, Bogotá, Colombia.
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