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do Bomfim FRC, Gomes BS, Lanza SZ, Esquisatto MAM, Lopes-Filho GDJ. Photobiomodulation effects on synovial morphology, iNOS gene, and protein expression in a model of acute inflammation. Acta Cir Bras 2024; 39:e392024. [PMID: 38511763 PMCID: PMC10953614 DOI: 10.1590/acb392024] [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: 10/03/2023] [Accepted: 02/05/2024] [Indexed: 03/22/2024] Open
Abstract
PURPOSE To evaluate morphological aspects and inducible nitric oxide synthase (iNOS) gene and protein expression in a model of acute inflammation. METHODS Thirty-six female Wistar rats were assigned into three groups: control (saline, n = 12), sham (arthritis, n = 12), and PBM (arthritis and photobiomodulation, n = 12). Arthritis induction was performed with 200 μg of intra-articular Zymosan in sham and PBM animals. PBM was performed 24 h after induction with a laser device (λ = 808 nm, 25 mW of nominal power, fluence of 20 J/cm2, beam area of 0.02 mm2, time of 33 s, total energy of 0.825 J) with punctual and single dose application. Morphological analysis of joint structure (HE) and immunohistochemistry (anti-iNOS antibody) were performed on knee samples, and synovial tissue was submitted to RNA extraction, cDNA synthesis and gene expression analysis by quantitative polymerase chain reaction. Statistical analyses were performed with p < 0.05. RESULTS It was observed an increase in the thickness of the synovial lining epithelium and inflammatory infiltrate in sham compared to PBM. Gene expression analysis showed higher iNOS expression in PBM, and iNOS protein expression decreased in PBM compared to sham. CONCLUSIONS Photobiomodulation decreased inflammation in PBM animals, upregulated iNOS gene expression, however down egulated protein expression compared to sham.
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Affiliation(s)
- Fernando Russo Costa do Bomfim
- Universidade Federal de São Paulo – Escola Paulista de Medicina – Postgraduate Program in Interdisciplinary Surgical Science – São Paulo (SP), Brazil
- Centro Universitário da Fundação Hermínio Ometto – Araras (SP), Brazil
| | - Bruna Silva Gomes
- Universidade Federal de São Paulo – Escola Paulista de Medicina – Postgraduate Program in Interdisciplinary Surgical Science – São Paulo (SP), Brazil
| | | | | | - Gaspar de Jesus Lopes-Filho
- Universidade Federal de São Paulo – Escola Paulista de Medicina – Postgraduate Program in Interdisciplinary Surgical Science – São Paulo (SP), Brazil
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Gonçalves AB, Bovo JL, Gomes BS, Pigoso AA, Felonato M, Esquisatto MAM, Filho GDJL, do Bomfim FRC. Photobiomodulation (λ=808nm) and Platelet-Rich Plasma (PRP) for the Treatment of Acute Rheumatoid Arthritis in Wistar Rats. J Lasers Med Sci 2021; 12:e60. [PMID: 35155145 PMCID: PMC8837836 DOI: 10.34172/jlms.2021.60] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/18/2021] [Indexed: 12/13/2022]
Abstract
Introduction: Rheumatoid arthritis (RA) causes inflammation, pain, edema, and articular degradation and its treatment can be based on anti-inflammatory drugs, photobiomodulation (PBM) and/or platelet-rich plasma (PRP) that can decrease cell flow and promote local healing. In the present study, we evaluate the effects of PBM and PRP on acute arthritis in Wistar rats through inflammatory and oxidative stress parameters. Methods: Thirty female Wistar rats were assigned to five groups (n=6, each group): Control, Sham, PRP, Laser, and PRP+Laser. For arthritis induction, all animals of groups Sham, PRP, Laser and PRP+Laser received an intraarticular injection of Zymosan® (200µg) in the right knee. Twenty-four hours post-arthritis induction, PRP was prepared and injected (8 × 105 of platelets) in animals of PRP and PRP+Laser groups. PBM was performed in Laser and PRP+Laser groups by single-dose therapy with the GaAlAs laser (λ=808 nm, P=25 mW, fluence=30 J/cm2, beam area=0.02 mm2, t=33 seconds, E=0.825 J, punctual application). After seven days of induction, serum samples were collected and thiobarbituric acid reactive substances (TBARS), nitric oxide (NO) and catalase activity were analysed. Morphological parameters were measured for inflammation areas, cartilage thickness, and C3 protein expression in knee samples. Statistical analysis was performed with an ANOVA test and Tukey's post-hoc test with a significance level of 5% (P<0.05). Results: NO was lower in the treated groups compared to the Sham group, and TBARS did not show any differences, while catalase showed greater activity between PRP+Laser versus PRP (P<0.05). Inflammatory areas and cartilage thickness were lower in the treated groups compared to Sham (P<0.05), while no differences in C3 protein expression was observed. Conclusion: PBM associated with PRP is better for anti-inflammatory and joint preservation by morphological aspects and NO levels that concern a potential clinical application.
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Affiliation(s)
- Amanda Bezerra Gonçalves
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
| | - Júlia Leme Bovo
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
| | - Bruna Silva Gomes
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
| | - Acácio Antonio Pigoso
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
| | - Maíra Felonato
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
| | | | - Gaspar de Jesus Lopes Filho
- Postgraduate Program in Interdisciplinary Surgical Science, Universidade Federal de São Paulo, UNIFESP-EPM, São Paulo, Brazil
| | - Fernando Russo Costa do Bomfim
- Postgraduate Program in Biomedical Sciences of Centro Universitário da Fundação Hermínio Ometto, Araras, Brazil
- Postgraduate Program in Interdisciplinary Surgical Science, Universidade Federal de São Paulo, UNIFESP-EPM, São Paulo, Brazil
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Sabino VG, Ginani F, da Silva TN, Cabral AA, Mota-Filho HG, Freire MCLC, de Souza Furtado P, Assumpção PWMC, Cabral LM, Moura CE, Rocha HAO, de Souza Picciani PH, Barboza CAG. Laser therapy increases the proliferation of preosteoblastic MC3T3-E1 cells cultured on poly(lactic acid) films. J Tissue Eng Regen Med 2020; 14:1792-1803. [PMID: 33010118 DOI: 10.1002/term.3134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/31/2020] [Accepted: 09/09/2020] [Indexed: 11/06/2022]
Abstract
This study aimed to verify the efficacy of low-level laser irradiation (LLLI) on the proliferation of MC3T3-E1 preosteoblasts cultured on poly(lactic acid) (PLA) films. The produced films were characterized by contact angle tests, scanning electron microscopy (SEM), atomic force microscopy, differential scanning calorimetry, and X-ray diffraction. The MC3T3-E1 cells were cultured as three different groups: Control-cultured on polystyrene plastic surfaces; PLA-cultured on PLA films; and PLA + Laser-cultured on PLA films and submitted to laser irradiation (660 nm; 30 mW; 4 J/cm2 ). Cell proliferation was analyzed by Trypan blue and Alamar blue assays at 24, 48, and 72 h after irradiation. Cell viability was assessed by Live/Dead assay, apoptosis-related events were evaluated by Annexin V/propidium iodide (PI) expression, and cell cycle events were analyzed by flow cytometry. Cell morphology on the surface of films was assessed by SEM. Cell counting and biochemical assay results indicate that the PLA + Laser group exhibited higher proliferation (p < 0.01) when compared with the Control and PLA groups. The Live/Dead and Annexin/PI assays indicate increased cell viability in the PLA + Laser group that also presented a higher percentage of cells in the proliferative cell cycle phases (S and G2/M). These findings were also confirmed by the higher cell density observed in the irradiated group through SEM images. The evidence from this study supports the idea that LLLI increases the proliferation of MC3T3-E1 cells on PLA surfaces, suggesting that it can be potentially applied in bone tissue engineering.
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Affiliation(s)
| | - Fernanda Ginani
- Department of Morphology, Federal University of Rio Grande do Norte, Natal, Brazil
| | | | | | | | | | | | | | - Lucio Mendes Cabral
- Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Eduardo Moura
- Department of Animal Sciences, Federal Rural University of Semiarid Region, Mossoró, Brazil
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Krueger GF, de Oliveira MC, Gassen HT, Sganzerla JT, Simon D, Grivicich I, Hernández PAG, Miguens-Jr SAQ. Evaluation of Aquaporins 1 and 5 Expression in Rat Parotid Glands After Volumetric Modulated Arc Radiotherapy and Use of Low-Level Laser Therapy at Different Times. J Lasers Med Sci 2020; 11:262-267. [PMID: 32802285 DOI: 10.34172/jlms.2020.44] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Introduction: This experimental study investigated the mRNA expression of aquaporins (AQPs) 1 and 5 in the parotid glands of rats irradiated with volumetric modulated arc therapy (VMAT) and subjected to low-level laser therapy (LLLT) at different time points. Methods: The sample consisted of 30 Wistar rats (Rattus norvegicus) divided into the following groups: control, LLLT alone (LG), radiotherapy alone (RG), and experimental groups that received LLLT at 24 hours (early experimental group [EEG], n=12) and 120 hours (late experimental group [LEG], n=12) after radiotherapy. VMAT was delivered at a single dose (12 Gy) and LLLT was performed with an aluminium-gallium-arsenide diode laser (660 nm, 100 mW), spot area of 0.0028 cm2, energy of 2 J/cm2 applied to 3 spots in the region corresponding to the right parotid gland, for 10 consecutive days. The right parotid gland was resected and prepared for RNA extraction. The gene expression of AQPs was evaluated by quantitative polymerase chain reaction (qPCR) using specific TaqMan probes, with the HPRT gene as an internal control. Results: The lowest AQP1 gene expression was 0.83 (0.27) with the use of LLLT 24 hours after radiotherapy (EEG), and the highest was 1.56 (0.80) with the use of LLLT alone (LG). Likewise, the lowest AQP5 gene expression was found in the EEG (mean = 0.88; SD = 0.49) and the highest in the LG (mean = 1.29; SD = 0.33). Conclusion: The use of LLLT after radiotherapy may contribute to the maintenance and an increase of these proteins, even when used at a later time point after radiotherapy.
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Affiliation(s)
- Gabriel Francisco Krueger
- Department of Oral Medicine, Graduate Program in Dentistry, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | | | - Humberto Thomazi Gassen
- Department of Oral Medicine, Graduate Program in Dentistry, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Juliana Tomaz Sganzerla
- Department of Oral Medicine, Graduate Program in Dentistry, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Daniel Simon
- Graduate Program in Cellular and Molecular Biology Applied to Health, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Ivana Grivicich
- Graduate Program in Cellular and Molecular Biology Applied to Health, Universidade Luterana do Brasil, Canoas, RS, Brazil
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