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Thammasart S, Namchaiw P, Pasuwat K, Tonsomboon K, Khantachawana A. Neuroprotective Potential of Photobiomodulation Therapy: Mitigating Amyloid-Beta Accumulation and Modulating Acetylcholine Levels in an In Vitro Model of Alzheimer's Disease. Photobiomodul Photomed Laser Surg 2024; 42:524-533. [PMID: 39058735 DOI: 10.1089/pho.2024.0042] [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: 07/28/2024] Open
Abstract
Objective: To investigate the effects of photobiomodulation therapy (PBMT) at 660 and 810 nm on amyloid-beta (Aβ)42-induced toxicity in differentiated SH-SY5Y cells and to assess its impact on Aβ42 accumulation and cholinergic neurotransmission. Background: Alzheimer's disease (AD) is characterized by the accumulation of Aβ peptides, leading to neurodegeneration, cholinergic deficit, and cognitive decline. PBMT has emerged as a potential therapeutic approach to mitigate Aβ-induced toxicity and enhance cholinergic function. Methods: Differentiated neurons were treated with 1 μM Aβ42 for 1 day, followed by daily PBMT at wavelengths of 660 and 810 nm for 7 days. Treatments used LEDs emitting continuous wave light at a power density of 5 mW/cm2 for 10 min daily to achieve an energy density of 3 J/cm2. Results: Differentiated SH-SY5Y cells exhibited increased Aβ42 aggregation, neurite retraction, and reduced cell viability. PBMT at 810 nm significantly mitigated the Aβ42-induced toxicity in these cells, as evidenced by reduced Aβ42 aggregation, neurite retraction, and improved cell viability and neuronal morphology. Notably, this treatment also restored acetylcholine levels in the neurons exposed to Aβ42. Conclusions: PBMT at 810 nm effectively reduces Aβ42-induced toxicity and supports neuronal survival, highlighting its neuroprotective effects on cholinergic neurons. By shedding light on the impact of low-level light therapy on Aβ42 accumulation and cellular processes. These findings advocate for further research to elucidate the mechanisms of PBMT and validate its clinical relevance in AD management.
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Affiliation(s)
- Siriluk Thammasart
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
| | - Poommaree Namchaiw
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
- Neuroscience Center for Research and Innovation, Learning Institute, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
| | - Kwanchanok Pasuwat
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
- Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
| | - Khaow Tonsomboon
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Anak Khantachawana
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
- Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok, Thailand
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da Rocha RB, Araújo DD, Machado FDS, Cardoso VS, Araújo AJ, Marinho-Filho JDB. The role of light emitting diode in wound healing: A systematic review of experimental studies. Cell Biochem Funct 2024; 42:e4086. [PMID: 38956862 DOI: 10.1002/cbf.4086] [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: 03/19/2024] [Revised: 05/17/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Wounds represent a growing global issue demanding increased attention. To expedite wound healing, technologies are under development, and light emitting diode (LED) devices of varying wavelengths are being explored for their stimulating influence on the healing process. This article presents a systematic literature review aiming to compile, organize, and analyze the impacts of LED devices on wound healing. This review is registered on the PROSPERO platform [CRD42023403870]. Two blinded authors conducted searches in the Pubmed, Web of Science, Scopus, Embase, and ScienceDirect databases. In vitro and in vivo experimental studies assessing LED utilization in the wound healing process were included. The search yielded 1010 studies, of which 27 were included in the review. It was identified that LED stimulates different healing pathways, promoting enhanced cell proliferation and migration, angiogenesis stimulation, increased collagen deposition, and modulation of the inflammatory response. Thus, it can be concluded that the LED stimulates cellular and molecular processes contingent on the utilized parameters. The effects depend on the standards used. Cell migration and proliferation were better influenced by green and red LED. The extracellular matrix components and angiogenesis were regulated by all wavelengths and the modulation of inflammation was mediated by green, red, and infrared LEDs.
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Affiliation(s)
- Rebeca Barbosa da Rocha
- Laboratório de Cultura de Células do Delta (LCCDelta), Universidade Federal do Delta do Parnaíba-UFDPar, Parnaíba, Piauí, Brazil
| | - Dakson Douglas Araújo
- Laboratório de Cultura de Células do Delta (LCCDelta), Universidade Federal do Delta do Parnaíba-UFDPar, Parnaíba, Piauí, Brazil
| | - Fabrício Dos Santos Machado
- Laboratório de Cultura de Células do Delta (LCCDelta), Universidade Federal do Delta do Parnaíba-UFDPar, Parnaíba, Piauí, Brazil
| | - Vinicius Saura Cardoso
- Laboratório de Estudos e Pesquisas em Sinais Biológicos (Biosignal), Universidade Federal do Delta do Parnaíba-UFDPar, Parnaíba, Piauí, Brazil
| | - Ana Jérsia Araújo
- Laboratório de Cultura de Células do Delta (LCCDelta), Universidade Federal do Delta do Parnaíba-UFDPar, Parnaíba, Piauí, Brazil
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Li S, Yu J, Zhang J, Li X, Yu J. LSD1 interacting with HSP90 promotes skin wound healing by inducing metabolic reprogramming of hair follicle stem cells through the c-MYC/LDHA axis. FASEB J 2023; 37:e23031. [PMID: 37342917 DOI: 10.1096/fj.202202001rr] [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: 11/29/2022] [Revised: 05/11/2023] [Accepted: 06/02/2023] [Indexed: 06/23/2023]
Abstract
It has been demonstrated that hair follicle stem cells (HFSCs) can contribute to wound closure and repair. However, the specific mechanism remains unclear due to the complexity of the wound repair process. Lysine-specific demethylase 1 (LSD1), an important gene for the regulation of stem cell differentiation, has been reported to participate in wound healing regulation. Heat shock protein 90 (HSP90), a chaperone protein, is recently discovered to be a driver gene for wound healing. This study explored the molecular mechanisms by which the binding between LSD1 and HSP90 affects the role of HFSCs during skin wound healing. Following bioinformatics analysis, the key genes acting on HFSCs were identified. The expression of LSD1, HSP90, and c-MYC was found to be upregulated in differentiated HFSCs. Analysis of their binding affinity revealed that LSD1 interacted with HSP90 to enhance the stability of the transcription factor c-MYC. Lactate dehydrogenase A (LDHA) has been documented to be essential for HFSC activation. Therefore, we speculate that LDHA may induce the differentiation of HFSCs through glucose metabolism reprogramming. The results showed that c-MYC activated LDHA activity to promote glycolytic metabolism, proliferation, and differentiation of HFSCs. Finally, in vivo animal experiments further confirmed that LSD1 induced skin wound healing in mice via the HSP90/c-MYC/LDHA axis. From our data, we conclude that LSD1 interacting with HSP90 accelerates skin wound healing by inducing HFSC glycolytic metabolism, proliferation, and differentiation via c-MYC/LDHA axis.
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Affiliation(s)
- Shuiqi Li
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P. R. China
| | - Jie Yu
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P. R. China
| | - Jiangan Zhang
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P. R. China
| | - Xiaohong Li
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P. R. China
| | - Jianbin Yu
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, P. R. China
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Wang W, Song Y, Tian Y, Chen B, Liang Y, Liang Y, Li C, Li Y. TCPP/MgO-loaded PLGA microspheres combining photodynamic antibacterial therapy with PBM-assisted fibroblast activation to treat periodontitis. Biomater Sci 2023; 11:2828-2844. [PMID: 36857622 DOI: 10.1039/d2bm01959k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Bacteria eradication and subsequent periodontal tissue reconstruction is the primary task for periodontitis treatment. Commonly used antibiotic therapy suffers from antibiotic resistance. Meanwhile, promoting fibroblast activity is crucial for re-establishing a damaged periodontal structure. In addition to the fibroblast activation property of Mg2+, photobiomodulation (PBM) has recently attracted increasing attention in wound healing. Using the same 635 nm laser resource, PBM could simultaneously work with antibacterial photodynamic therapy (aPDT) to achieve antibacterial function and fibroblast activation effect. Herein, multifunctional microspheres were designed by employing poly (lactic-co-glycolic acid) (PLGA) microspheres to load tetrakis (4-carboxyphenyl) porphyrin (TCPP) and magnesium oxide (MgO) nanoparticles, named as PMT, with sustained Mg2+ release for 20 days. PMT achieved excellent antibacterial photodynamic effect for periodontal pathogens F. nucleatum and P. gingivalis by generating reactive oxygen species, which increases cell membrane permeability and destroys bacteria integrity to cause bacteria death. Meanwhile, PMT itself exhibited improved fibroblast viability and adhesion, with the PMT + light group revealing further activation of fibroblast cells, suggesting the coordinated action of Mg2+ and PBM effects. The underlying molecular mechanism might be the elevated gene expressions of Fibronectin 1, Col1a1, and Vinculin. In addition, the in vivo rat periodontitis model proved the superior therapeutic effects of PMT with laser illumination using micro-computed tomography analysis and histological staining, which presented decreased inflammatory cells, increased collagen production, and higher alveolar bone level in the PMT group. Our study sheds light on a promising strategy to fight periodontitis using versatile microspheres, which combine aPDT and PBM-assisted fibroblast activation functions.
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Affiliation(s)
- Wanmeng Wang
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Yunjia Song
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Yuan Tian
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Bo Chen
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Yunkai Liang
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Yu Liang
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Changyi Li
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
| | - Ying Li
- School of Dentistry, Tianjin Medical University, Tianjin 300070, China.
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Mo S, Kim EY, Kwon YS, Lee MY, Ahn JC. NF-κB-mediated anti-inflammatory effects of an organic light-emitting diode (OLED) device in lipopolysaccharide (LPS)-induced in vitro and in vivo inflammation models. Front Immunol 2022; 13:1050908. [PMID: 36561754 PMCID: PMC9763281 DOI: 10.3389/fimmu.2022.1050908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
Inflammation is the body's physiological response to harmful agents. However, if not regulated properly, inflammation can become pathological. Macrophages are key players in the inflammatory process, and modulate the immune response. Due to the side effects of anti-inflammatory drugs, non-pharmaceutical therapies for inflammatory diseases must be developed. Photobiomodulation is a non-invasive therapeutic approach to treating certain pathological conditions using light energy. Light-emitting diodes (LEDs) are commonly used as light sources for photobiomodulation treatment, but their clinical applications are limited. Organic LEDs (OLEDs) are thin, lightweight and flexible, enabling consistent and even delivery of light energy to target areas; this makes OLED promising components for therapeutic devices. In the present study, we examined the effects of OLED treatment on inflammation in vitro using a lipopolysaccharide (LPS)-induced macrophage RAW264.7 cell model, and in vivo using a pinna skin mouse model. We found that LPS-induced morphological changes and inflammatory cytokine expression were significantly reduced in RAW264.7 cells subjected to OLED treatment compared to the LPS-induced controls. This work provides evidence for the anti-inflammatory effects of OLEDs, demonstrating their potential to be incorporated into medical devices in the future.
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Affiliation(s)
- SangJoon Mo
- Medical Laser Research Center, Dankook University, Cheonan, South Korea,Department of Otolaryngology-Head & Neck Surgery, College of Medicine, Dankook University, Cheonan, South Korea
| | - Eun Young Kim
- Beckman Laser Institute Korea, Dankook University, Cheonan, South Korea
| | - Yi-Suk Kwon
- Korea Testing Laboratory, Medical Device Evaluation Center, Medical Health Division, Seoul, South Korea
| | - Min Young Lee
- Center for Bio-Medical Engineering Core Facility, Dankook University, Cheonan, South Korea,Beckman Laser Institute Korea, Dankook University, Cheonan, South Korea,*Correspondence: Min Young Lee, ; Jin Chul Ahn,
| | - Jin Chul Ahn
- Medical Laser Research Center, Dankook University, Cheonan, South Korea,Beckman Laser Institute Korea, Dankook University, Cheonan, South Korea,Department of Otolaryngology-Head & Neck Surgery, College of Medicine, Dankook University, Cheonan, South Korea,*Correspondence: Min Young Lee, ; Jin Chul Ahn,
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He Y, Leng J, Li K, Xu K, Lin C, Yuan Z, Zhang R, Wang D, Tao B, Huang TJ, Cai K. A multifunctional hydrogel coating to direct fibroblast activation and infected wound healing via simultaneously controllable photobiomodulation and photodynamic therapies. Biomaterials 2021; 278:121164. [PMID: 34601196 DOI: 10.1016/j.biomaterials.2021.121164] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/09/2021] [Accepted: 09/28/2021] [Indexed: 12/31/2022]
Abstract
Bacterial infection treatment and subsequent tissue rebuilding are the main tasks of biomaterial research. To endow implants with antibacterial activity and biological functions, the material systems are usually very complicated and ineffective. Recently, the concept of photobiomodulation (PBM), or low-level laser therapy (LLLT), has attracted increasing attention in tissue repair applications but still has not obtained wide acceptance. Because of the same laser resource, PBM could simultaneously work with 660 nm laser triggered photodynamic therapy (PDT), which will significantly simplify the material system and achieve the multiple functions of antibacterial activity and biological modulation effects. Herein, we attempt to validate the effectiveness of PBM and combine PBM with a PDT-based material system. A catechol motif-modified methacrylated gelatin containing photosensitizer Chlorin e6-loaded mesoporous polydopamine nanoparticles was fabricated (GelMAc/MPDA@Ce6). This hydrogel could be tightly adhered to titanium surfaces to serve as surface coating materials or directly used as dressings. Because of the 660 nm laser-triggered ROS generation property of Ce6, GelMAc/MPDA@Ce6 exhibited a remarkable and rapid antibacterial activity when the laser power was 1 W cm-2. After bacterial elimination, when the power was adjusted to 100 mW cm-2, daily irradiation brought an excellent PBM effect: the fibroblast activation was realized to accelerate wound repair. According to our in vitro and in vivo results, the fabricated hydrogel coating possessed both antibacterial activity and fibroblast activation ability only by adjusting the power of laser irradiation, which will greatly strengthen the confidence of using PBM in broader fields and give a good example to combine PBM with traditional biomaterial design.
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Affiliation(s)
- Ye He
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China; Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA
| | - Jin Leng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Ke Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Kun Xu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Chuanchuan Lin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Zhang Yuan
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Rui Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Danyang Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Tony Jun Huang
- Thomas Lord Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708, USA
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China; Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, 400715, China.
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Etemadi A, Imani N, Seyed Jafari E, Chiniforush N. In Vitro Effect of Photodynamic Therapy with Indocyanine Green Followed by 660 nm Photobiomodulation Therapy on Fibroblast Viability. Photochem Photobiol 2021; 98:498-503. [PMID: 34553775 DOI: 10.1111/php.13524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/20/2021] [Indexed: 11/29/2022]
Abstract
This in␣vitro study sought to assess the effect of repetitive PBMT on the viability of fibroblasts following aPDT with indocyanine green (ICG). In this in␣vitro experimental study, human gingival fibroblasts (HGFs) were obtained and incubated in a culture medium. After reaching 10 000 cells cm-2 , the cells were divided into five groups of control, aPDT with ICG and 808 nm (energy density of 24 J cm-2 ), PBMT immediately after aPDT, PBMT with 660 nm (energy density of 7.2 J cm-2 ) immediately and 24 h after aPDT and PBMT immediately and 24 and 48 h after aPDT in 48-well plates. Cell viability was evaluated using the methyl thiazolyl tetrazolium (MTT) assay after 1, 4 and 7 days of incubation. Statistical analyses were performed using one-way ANOVA. Cell viability significantly decreased in group 2 (P < 0.002). We observed no significant increase in cell viability at any time point in group 3 (P > 0.05). Cell viability significantly increased in groups 4 and 5 after the first day of incubation (P < 0.000). Emission of 660 nm as PBMT for two and three times along with passage of time would increase the viability of HGFs following aPDT with ICG.
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Affiliation(s)
- Ardavan Etemadi
- Department of Periodontics, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Negar Imani
- Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | | | - Nasim Chiniforush
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Baracho VDS, Chaves MEDA, Huebner R, Oliveira MX, Ferreira PHDC, Lucas TC. Phototherapy (cluster multi-diode 630 nm and 940 nm) on the healing of pressure injury: A pilot study. JOURNAL OF VASCULAR NURSING 2021; 39:67-75. [PMID: 34507703 DOI: 10.1016/j.jvn.2021.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 05/17/2021] [Accepted: 06/20/2021] [Indexed: 02/03/2023]
Abstract
The therapeutic benefits of LED in wound care have been reported since the 1990s. Nevertheless, studies directly related to the effects of LED phototherapy on the venous and arterial circulation and the healing process of pressure injuries are scarce in literature. Thus, the aim of this study was to evaluate the efficacy of a LED phototherapy prototype in participants with pressure injuries. In this pilot study 15 participants were randomized into three therapeutic groups. The experimental groups received applications of 630 and 940 nm LED three times a week for 8 weeks, with a dose of 6 J/cm2 in Group I. In group II, a dose of 8 J/cm2 in addition to the standard treatment. Group III (control group) received only daily standard treatment which consisted of cleaning the lesioned area with physiological solution, followed by application of an alginate hydrogel dressing over a period of 8 weeks. Pressure injuries were photographed and the area was measured by the Quantikov® image analyzer software. There was no statistically significant difference (p > 0.05) between the three groups when assessing the initial lesion area. At the end of 2 months, the median and interquartile ranges of the injuries were 5.90 (0.79-9.5) cm2 for group I, 0.54 (0.47-1.16) cm2 for group II and 26.76 (17.25-41.05) for group III. There was a statistically significant difference between treatment types (I x III and II x III) for pressure injuries over the 21 sessions. However, there was no significant difference between groups I x II that received different doses of LED phototherapy. The initial hypothesis was supported given that the combination of two wavelengths in the LED phototherapy with different doses may be helpful in accelerating the healing of pressure injuries.
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Affiliation(s)
- Valéria da Silva Baracho
- Department of Nursing from Santa Casa de Caridade de Diamantina/MG, Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais, Brazil
| | - Maria Emília de Abreu Chaves
- Department of Mechanical Engineering, Laboratory of Bioengineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Rudolf Huebner
- Department of Mechanical Engineering, Laboratory of Bioengineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Murilo Xavier Oliveira
- Department of Physiotherapy, Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais, Brazil
| | - Paulo Henrique da Cruz Ferreira
- Department of Nursing from Santa Casa de Caridade de Diamantina/MG, Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais, Brazil
| | - Thabata Coaglio Lucas
- Department of Nursing, Federal University of the Valleys of Jequitinhonha and Mucuri, Diamantina, Minas Gerais, Brazil. Laboratory of Bioengineering, Federal University of Minas Gerais, Belo Horizonte,Minas Gerais, Brazil.
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Rhee CK, Chang SY. Combination photobiomodulation/N-acetyl-L-cysteine treatment appears to mitigate hair cell loss associated with noise-induced hearing loss in rats. Lasers Med Sci 2021; 36:1941-1947. [PMID: 33822307 DOI: 10.1007/s10103-021-03304-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 03/22/2021] [Indexed: 11/25/2022]
Abstract
Sensorineural hearing loss is an intractable disease. Acoustic overstimulation creates hearing loss; many patients exhibit social and emotional dysfunctions. In a model of noise-induced hearing loss (NIHL), low-level laser photobiomodulation (PBM) at a near-infrared wavelength significantly improved auditory brainstem response (ABR) thresholds. In addition, both N-acetyl-L-cysteine (NAC) and acetyl-L-carnitine (ALCAR) attenuated NIHL, reducing the effects of noise trauma in the cochlea and the central auditory system. Here, we combined PBM with antioxidants to explore hearing threshold recovery and morphological hair cell changes after rats were exposed to noise. The average auditory brainstem response thresholds after PBM/NAC combination treatment were reduced from the apex to the basal turn at all of 8, 16, and 32 kHz compared to the noise-only group. The PBM/NAC combination treated group exhibited intact outer hair cells in all turns, and significantly greater hair cell numbers in the middle and basal cochlear turns, than did controls. Thus, PBM/NAC treatment may prevent hearing dysfunction caused by NIHL.
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Affiliation(s)
- Chung-Ku Rhee
- Department of Otolaryngology-Head & Neck Surgery, College of Medicine, Dankook University, 119 Dandae-ro, Cheonan, 31116, Republic of Korea
| | - So-Young Chang
- Beckman Laser Institute Korea, Dankook University, 119 Dandae-ro, Cheonan, 31116, Republic of Korea.
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Kim YM, Ko SH, Shin YI, Kim Y, Kim T, Jung J, Lee SY, Kim NG, Park KJ, Ryu JH. Light-emitting diode irradiation induces AKT/mTOR-mediated apoptosis in human pancreatic cancer cells and xenograft mouse model. J Cell Physiol 2020; 236:1362-1374. [PMID: 32749680 DOI: 10.1002/jcp.29943] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/24/2020] [Accepted: 07/02/2020] [Indexed: 01/22/2023]
Abstract
The beneficial effects of light-emitting diode (LED) irradiation have been reported in various pathologies, including cancer. However, its effect in pancreatic cancer cells remains unclear. Herein, we demonstrated that blue LED of 460 nm regulated pancreatic cancer cell proliferation and apoptosis by suppressing the expression of apoptosis-related factors, such as mutant p53 and B-cell lymphoma 2 (Bcl-2), and decreasing the expression of RAC-β serine/threonine kinase 2 (AKT2), the phosphorylation of protein kinase B (AKT), and mammalian target of rapamycin (mTOR). Blue LED irradiation also increased the levels of cleaved poly-(ADP-ribose) polymerase (PARP) and caspase-3 in pancreatic cancer cells, while it suppressed AKT2 expression and inhibited tumor growth in xenograft tumor tissues. In conclusion, blue LED irradiation suppressed pancreatic cancer cell and tumor growth by regulating AKT/mTOR signaling. Our findings indicated that blue LEDs could be used as a nonpharmacological treatment for pancreatic cancer.
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Affiliation(s)
- Young Mi Kim
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Sung-Hwa Ko
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.,Department of Rehabilitation Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Yong-Il Shin
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.,Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Yeonye Kim
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Taehyung Kim
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Jaehoon Jung
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Sang-Yull Lee
- Department of Biochemistry, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Nam Gyun Kim
- Medical Research Center of Color Seven, Seoul, Republic of Korea
| | - Kyoung-Jun Park
- Medical Research Center of Color Seven, Seoul, Republic of Korea
| | - Ji Hyeon Ryu
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
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Contreras A, Raxworthy MJ, Wood S, Tronci G. Hydrolytic Degradability, Cell Tolerance and On-Demand Antibacterial Effect of Electrospun Photodynamically Active Fibres. Pharmaceutics 2020; 12:E711. [PMID: 32751391 PMCID: PMC7465204 DOI: 10.3390/pharmaceutics12080711] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 01/17/2023] Open
Abstract
Photodynamically active fibres (PAFs) are a novel class of stimulus-sensitive systems capable of triggering antibiotic-free antibacterial effect on-demand when exposed to light. Despite their relevance in infection control, however, the broad clinical applicability of PAFs has not yet been fully realised due to the limited control in fibrous microstructure, cell tolerance and antibacterial activity in the physiologic environment. We addressed this challenge by creating semicrystalline electrospun fibres with varying content of poly[(l-lactide)-co-(glycolide)] (PLGA), poly(ε-caprolactone) (PCL) and methylene blue (MB), whereby the effect of polymer morphology, fibre composition and photosensitiser (PS) uptake on wet state fibre behaviour and functions was studied. The presence of crystalline domains and PS-polymer secondary interactions proved key to accomplishing long-lasting fibrous microstructure, controlled mass loss and controlled MB release profiles (37 °C, pH 7.4, 8 weeks). PAFs with equivalent PLGA:PCL weight ratio successfully promoted attachment and proliferation of L929 cells over a 7-day culture with and without light activation, while triggering up to 2.5 and 4 log reduction in E. coli and S. mutans viability, respectively. These results support the therapeutic applicability of PAFs for frequently encountered bacterial infections, opening up new opportunities in photodynamic fibrous systems with integrated wound healing and infection control capabilities.
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Affiliation(s)
- Amy Contreras
- Institute of Medical and Biological Engineering, University of Leeds, Leeds LS2 9JT, UK; (A.C.); (M.J.R.)
| | - Michael J. Raxworthy
- Institute of Medical and Biological Engineering, University of Leeds, Leeds LS2 9JT, UK; (A.C.); (M.J.R.)
- Neotherix Ltd., The Hiscox Building, Peasholme Green, York YO1 7PR, UK
| | - Simon Wood
- School of Dentistry, St. James’s University Hospital, University of Leeds, Leeds LS9 7TF, UK;
| | - Giuseppe Tronci
- School of Dentistry, St. James’s University Hospital, University of Leeds, Leeds LS9 7TF, UK;
- Clothworkers Centre for Textile Materials Innovation for Healthcare, School of Design, University of Leeds, Leeds LS2 9JT, UK
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Chang B, Qiu H, Zhao H, Yang X, Wang Y, Ji T, Zhang Y, Quan Q, Li Y, Zeng J, Meng H, Gu Y. The Effects of Photobiomodulation on MC3T3-E1 Cells via 630 nm and 810 nm Light-Emitting Diode. Med Sci Monit 2019; 25:8744-8752. [PMID: 31743330 PMCID: PMC6880645 DOI: 10.12659/msm.920396] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 11/05/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Photobiomodulation (PBM) has been explored as a promising therapeutic strategy to regulate bone cell growth; however, the effects of PBM on osteoblast cell lines remains poorly understood. In addition, as a light source of PBM, the light uniformity of light-emitting diode (LED) devices has not been given enough attention. MATERIAL AND METHODS Here, we sought to investigate the effects of PBM on MC3T3-E1 cells via 630 nm and 810 nm light from a newly designed LED with high uniformity of light. Cell proliferation, flow cytometric analysis, alkaline phosphatase (ALP) staining, ALP activity, Alizarin Red S staining, and quantitative real-time polymerase chain reaction (qRT-PCR) were carried out to assess treatment response. MC3T3-E1 cells were irradiated with LED devices (630±5 nm and 810±10 nm, continuous wave) for 200 seconds at a power density of 5 mW/cm² once daily. RESULTS Increases in cell proliferation and decreases in cell apoptosis were evident following irradiation. ALP staining intensity and activity were also significantly increased following irradiation. Level of mineralization was obviously enhanced in irradiated groups compared with non-irradiated controls. qRT-PCR also showed significant increases in mRNA expression of osteocalcin (OCN) and osteoprotegerin (OPG) in the irradiated groups. CONCLUSIONS Our results showed that LED PBM could promote the proliferation, ALP staining intensity and activity, level of mineralization, gene expression of OCN and OPG of MC3T3-E1 cells, with no significant difference between the 630 nm- and 810 nm-irradiated groups.
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Affiliation(s)
- Biao Chang
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Haixia Qiu
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Hongyou Zhao
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Xi Yang
- State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, P.R. China
- General Hospital of Xinjiang Military Command, Urumqi, Xinjiang, P.R. China
| | - Ying Wang
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Tengda Ji
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Yuxuan Zhang
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Qi Quan
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Yunqi Li
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Jing Zeng
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
| | - Haoye Meng
- Institute of Orthopedics, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
- Beijing Key Laboratory of Regenerative Medicine in Orthopedics, Beijing, P.R. China
- Key Laboratory of Musculoskeletal Trauma and War Injuries, People’s Liberation Army, Beijing, P.R. China
| | - Ying Gu
- Department of Laser Medicine, Chinese People’s Liberation Army General Hospital, Beijing, P.R. China
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