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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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
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Chen J, Sang Y, Li J, Zhao T, Liu B, Xie S, Sun W. Low-level controllable blue LEDs irradiation enhances human dental pulp stem cells osteogenic differentiation via transient receptor potential vanilloid 1. J Photochem Photobiol B 2022; 233:112472. [PMID: 35660312 DOI: 10.1016/j.jphotobiol.2022.112472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/04/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Human dental pulp stem cells (hDPSCs) have attracted tremendous attention in tissue regeneration engineering due to their excellent multidirectional differentiation potential. Photobiomodulation (PBM) using low-level light-emitting diodes (LEDs) or lasers has been proved to promote the osteogenesis of mesenchymal stem cells. However, the effect of LEDs on osteogenic differentiation of hDPSCs has little published data. In this work, the effect of blue LEDs with different energy densities of 2, 4, 6, 8, 10 J/cm2 on osteogenic differentiation of hDPSCs was examined by using in vitro ALP staining, ALP activity, mineralization, and real-time PCR. The results showed that compared with the control group, osteogenic differentiation was significantly enhanced in blue LEDs treated groups. As the energy density increased, the level of osteogenesis initially increased and then decreased reaching the highest level at 6 J/cm2. Transient receptor potential vanilloid 1 (TRPV1), a Ca2+ ion channel, was believed to be a potential player in osteogenesis by photobiomodulation. By immunofluorescence assay, calcium influx assay, PCR, and ALP staining, it was shown that blue LEDs irradiation can increase the activity of TRPV1 and intracellular calcium levels similarly to the agonist of TRPV1 capsaicin. Additionally, pretreatment with capsazepine, a selective TRPV1 inhibitor, was able to abrogate the osteogenic effect of blue LEDs. In conclusion, these findings proposed that blue LEDs can promote the osteogenesis of hDPSCs within the appropriate range (4-8 J/cm2) during culture of osteogenic medium, and TRPV1/Ca2+ may be an essential signaling pathway involved in blue LEDs-induced osteogenesis, providing new insights for the use of hDPSCs in tissue regeneration engineering.
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Affiliation(s)
- Jiaqi Chen
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Yimeng Sang
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Jiaying Li
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Tian Zhao
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China; Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China
| | - Bin Liu
- Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Sijing Xie
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China.
| | - Weibin Sun
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, China.
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Nakashima Y, Akaike M, Kounoura M, Hayashi K, Morita K, Oki Y, Nakanishi Y. Evaluation of osteoblastic cell behavior upon culture on titanium substrates photo-functionalized by vacuum ultra-violet treatment. Exp Cell Res 2022; 410:112944. [PMID: 34822810 DOI: 10.1016/j.yexcr.2021.112944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/15/2021] [Accepted: 11/20/2021] [Indexed: 11/20/2022]
Abstract
Photo-functionalization of titanium orthopedic/prosthetic implants using ultraviolet illumination is known to improve osteogenesis. Therefore, in this study, we aimed to examine the influence of vacuum ultraviolet (VUV)-treated titanium surfaces on osteoblast cell adhesion, activity, and differentiation. Osteoblastic cells were cultured on titanium substrates treated with various VUV treatment conditions (0, 6.2, 18.7, and 37.4 J/cm2) and their behavior was evaluated. The results revealed that cell adhesion was increased whereas cell activity and differentiation ability were decreased upon cell culture on VUV-treated substrates. In particular, cell activity and differentiation ability were dramatically suppressed with 18.7 J/cm2 VUV irradiation. Within the limitations of this cell-based experiment, we clarified the VUV treatment conditions in which cell adhesion was improved but cell activity and differentiation ability were suppressed. These results indicate that VUV-treatment can be used to influence cell growth properties and can be used to accelerate or suppress cell differentiation on implant substrates.
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Affiliation(s)
- Yuta Nakashima
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami Chuo-ku, Kumamoto, 860-8555, Japan; International Research Organization for Advanced Science & Technology, Kumamoto University, 2-39-1 Kurokami Chuo-ku, Kumamoto, 860-8555, Japan; Institute of Industrial Nanomaterials, 2-39-1 Kurokami Chuo-ku, Kumamoto, 860-8555, Japan.
| | - Mami Akaike
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masaki Kounoura
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Keita Hayashi
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Kinichi Morita
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuji Oki
- Department of I&E Visionaries, Kyusyu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yoshitaka Nakanishi
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami Chuo-ku, Kumamoto, 860-8555, Japan; Institute of Industrial Nanomaterials, 2-39-1 Kurokami Chuo-ku, Kumamoto, 860-8555, Japan
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Kim HN, Richardson KK, Krager KJ, Ling W, Simmons P, Allen AR, Aykin-Burns N. Simulated Galactic Cosmic Rays Modify Mitochondrial Metabolism in Osteoclasts, Increase Osteoclastogenesis and Cause Trabecular Bone Loss in Mice. Int J Mol Sci 2021; 22:11711. [PMID: 34769141 PMCID: PMC8583929 DOI: 10.3390/ijms222111711] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 11/24/2022] Open
Abstract
Space is a high-stress environment. One major risk factor for the astronauts when they leave the Earth's magnetic field is exposure to ionizing radiation from galactic cosmic rays (GCR). Several adverse changes occur in mammalian anatomy and physiology in space, including bone loss. In this study, we assessed the effects of simplified GCR exposure on skeletal health in vivo. Three months following exposure to 0.5 Gy total body simulated GCR, blood, bone marrow and tissue were collected from 9 months old male mice. The key findings from our cell and tissue analysis are (1) GCR induced femoral trabecular bone loss in adult mice but had no effect on spinal trabecular bone. (2) GCR increased circulating osteoclast differentiation markers and osteoclast formation but did not alter new bone formation or osteoblast differentiation. (3) Steady-state levels of mitochondrial reactive oxygen species, mitochondrial and non-mitochondrial respiration were increased without any changes in mitochondrial mass in pre-osteoclasts after GCR exposure. (4) Alterations in substrate utilization following GCR exposure in pre-osteoclasts suggested a metabolic rewiring of mitochondria. Taken together, targeting radiation-mediated mitochondrial metabolic reprogramming of osteoclasts could be speculated as a viable therapeutic strategy for space travel induced bone loss.
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Affiliation(s)
- Ha-Neui Kim
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Kimberly K. Richardson
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Kimberly J. Krager
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Wen Ling
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Pilar Simmons
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Antino R. Allen
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Nukhet Aykin-Burns
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
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Fu J, Li Y, Zhang Y, Liang Y, Zheng Y, Li Z, Zhu S, Li C, Cui Z, Wu S. An Engineered Pseudo-Macrophage for Rapid Treatment of Bacteria-Infected Osteomyelitis via Microwave-Excited Anti-Infection and Immunoregulation. Adv Mater 2021; 33:e2102926. [PMID: 34396595 DOI: 10.1002/adma.202102926] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/10/2021] [Indexed: 05/11/2023]
Abstract
Preventing deep bacterial infection and simultaneously enhancing osteogenic differentiation are in great demand for osteomyelitis. Microwave (MW) dynamic therapy is attracting attention due to its excellent penetration ability, but the mechanism of MW-induced reactive oxygen species (ROS) is still unknown. Herein, MW-responsive engineered pseudo-macrophages (M-Fe3 O4 /Au nanoparticles (NPs)) are fabricated to clear Staphylococcus aureus infections and induce M2 polarization of macrophages to improve osteogenic differentiation of bone marrow mesenchymal stem cells (MSCs) under MW irradiation. Fe3 O4 /Au NPs can generate ·O2 - and heat under MW irradiation in a saline solution, and the mechanism is put forward via finite element modeling and density functional theory calculations. Due to the gap plasmon, electromagnetic hotspots are produced at Fe3 O4 -Au interface at 2.45 GHz. Because of these induced electromagnetic hotspots, the sodium species is field-ionized and subsequently reacts with oxygen to produce ·O2 - . Meanwhile, the Fe3 O4 /Au NPs have a stronger ability than Fe3 O4 NPs to fix oxygen, favoring the production of ROS. Additionally, MW-treated macrophages diminish to secrete inflammatory cytokines, resulting in the decrease of ROS production in MSCs and thus enhancing their osteogenic differentiation. These engineered pseudo-macrophages will be promising for effectively treating bacterial infections and promoting osteoblast differentiation simultaneously in deep tissues under MW irradiation.
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Affiliation(s)
- Jieni Fu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Yuan Li
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Yu Zhang
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Yanqin Liang
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Yufeng Zheng
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
- State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Zhaoyang Li
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Shengli Zhu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Changyi Li
- Stomatological Hospital, Tianjin Medical University, No. 12, Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Zhenduo Cui
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
| | - Shuilin Wu
- School of Materials Science & Engineering, the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, P. R. China
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6
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Hollenberg AM, Huber A, Smith CO, Eliseev RA. Electromagnetic stimulation increases mitochondrial function in osteogenic cells and promotes bone fracture repair. Sci Rep 2021; 11:19114. [PMID: 34580378 PMCID: PMC8476611 DOI: 10.1038/s41598-021-98625-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Bone fracture is a growing public health burden and there is a clinical need for non-invasive therapies to aid in the fracture healing process. Previous studies have demonstrated the utility of electromagnetic (EM) fields in promoting bone repair; however, its underlying mechanism of action is unclear. Interestingly, there is a growing body of literature describing positive effects of an EM field on mitochondria. In our own work, we have previously demonstrated that differentiation of osteoprogenitors into osteoblasts involves activation of mitochondrial oxidative phosphorylation (OxPhos). Therefore, it was reasonable to propose that EM field therapy exerts bone anabolic effects via stimulation of mitochondrial OxPhos. In this study, we show that application of a low intensity constant EM field source on osteogenic cells in vitro resulted in increased mitochondrial membrane potential and respiratory complex I activity and induced osteogenic differentiation. In the presence of mitochondrial inhibitor antimycin A, the osteoinductive effect was reversed, confirming that this effect was mediated via increased OxPhos activity. Using a mouse tibial bone fracture model in vivo, we show that application of a low intensity constant EM field source enhanced fracture repair via improved biomechanical properties and increased callus bone mineralization. Overall, this study provides supporting evidence that EM field therapy promotes bone fracture repair through mitochondrial OxPhos activation.
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Affiliation(s)
- Alex M Hollenberg
- Center for Musculoskeletal Research, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Aric Huber
- Center for Musculoskeletal Research, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Charles O Smith
- Center for Musculoskeletal Research, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Roman A Eliseev
- Center for Musculoskeletal Research, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA.
- University of Rochester Medical Center, 601 Elmwood Ave, Rm 1-8541, Rochester, NY, 14642, USA.
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Caliogna L, Medetti M, Bina V, Brancato AM, Castelli A, Jannelli E, Ivone A, Gastaldi G, Annunziata S, Mosconi M, Pasta G. Pulsed Electromagnetic Fields in Bone Healing: Molecular Pathways and Clinical Applications. Int J Mol Sci 2021; 22:ijms22147403. [PMID: 34299021 PMCID: PMC8303968 DOI: 10.3390/ijms22147403] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 02/05/2023] Open
Abstract
In this article, we provide an extensive review of the recent literature of the signaling pathways modulated by Pulsed Electromagnetic Fields (PEMFs) and PEMFs clinical application. A review of the literature was performed on two medical electronic databases (PubMed and Embase) from 3 to 5 March 2021. Three authors performed the evaluation of the studies and the data extraction. All studies for this review were selected following these inclusion criteria: studies written in English, studies available in full text and studies published in peer-reviewed journal. Molecular biology, identifying cell membrane receptors and pathways involved in bone healing, and studying PEMFs target of action are giving a solid basis for clinical applications of PEMFs. However, further biology studies and clinical trials with clear and standardized parameters (intensity, frequency, dose, duration, type of coil) are required to clarify the precise dose-response relationship and to understand the real applications in clinical practice of PEMFs.
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Affiliation(s)
- Laura Caliogna
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Marta Medetti
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Valentina Bina
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy;
- Correspondence:
| | - Alice Maria Brancato
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Alberto Castelli
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Eugenio Jannelli
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Alessandro Ivone
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Giulia Gastaldi
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy;
- Centre for Health Technologies, University of Pavia, 27100 Pavia, Italy
| | - Salvatore Annunziata
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Mario Mosconi
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
| | - Gianluigi Pasta
- Orthopedics and Traumatology Clinic, IRCCS Policlinico San Matteo Foundation, 27100 Pavia, Italy; (L.C.); (M.M.); (A.M.B.); (A.C.); (E.J.); (A.I.); (S.A.); (M.M.); (G.P.)
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Dong Y, Suryani L, Zhou X, Muthukumaran P, Rakshit M, Yang F, Wen F, Hassanbhai AM, Parida K, Simon DT, Iandolo D, Lee PS, Ng KW, Teoh SH. Synergistic Effect of PVDF-Coated PCL-TCP Scaffolds and Pulsed Electromagnetic Field on Osteogenesis. Int J Mol Sci 2021; 22:6438. [PMID: 34208563 PMCID: PMC8234164 DOI: 10.3390/ijms22126438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/02/2021] [Accepted: 06/12/2021] [Indexed: 01/15/2023] Open
Abstract
Bone exhibits piezoelectric properties. Thus, electrical stimulations such as pulsed electromagnetic fields (PEMFs) and stimuli-responsive piezoelectric properties of scaffolds have been investigated separately to evaluate their efficacy in supporting osteogenesis. However, current understanding of cells responding under the combined influence of PEMF and piezoelectric properties in scaffolds is still lacking. Therefore, in this study, we fabricated piezoelectric scaffolds by functionalization of polycaprolactone-tricalcium phosphate (PCL-TCP) films with a polyvinylidene fluoride (PVDF) coating that is self-polarized by a modified breath-figure technique. The osteoinductive properties of these PVDF-coated PCL-TCP films on MC3T3-E1 cells were studied under the stimulation of PEMF. Piezoelectric and ferroelectric characterization demonstrated that scaffolds with piezoelectric coefficient d33 = -1.2 pC/N were obtained at a powder dissolution temperature of 100 °C and coating relative humidity (RH) of 56%. DNA quantification showed that cell proliferation was significantly enhanced by PEMF as low as 0.6 mT and 50 Hz. Hydroxyapatite staining showed that cell mineralization was significantly enhanced by incorporation of PVDF coating. Gene expression study showed that the combination of PEMF and PVDF coating promoted late osteogenic gene expression marker most significantly. Collectively, our results suggest that the synergistic effects of PEMF and piezoelectric scaffolds on osteogenesis provide a promising alternative strategy for electrically augmented osteoinduction. The piezoelectric response of PVDF by PEMF, which could provide mechanical strain, is particularly interesting as it could deliver local mechanical stimulation to osteogenic cells using PEMF.
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Affiliation(s)
- Yibing Dong
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
| | - Luvita Suryani
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
| | - Xinran Zhou
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
| | - Padmalosini Muthukumaran
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
| | - Moumita Rakshit
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
| | - Fengrui Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
| | - Feng Wen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
| | - Ammar Mansoor Hassanbhai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
| | - Kaushik Parida
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
| | - Daniel T. Simon
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden; (D.T.S.); (D.I.)
| | - Donata Iandolo
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 601 74 Norrköping, Sweden; (D.T.S.); (D.I.)
- Mines-Saint-Étienne, Campus Santé Innovations, 10 rue de la Marandière, 42270 Saint-Priest-en-Jarez, France
| | - Pooi See Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
| | - Kee Woei Ng
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (Y.D.); (X.Z.); (M.R.); (K.P.); (P.S.L.)
- Center for Nanotechnology and Nanotoxicology, Harvard T.H. Chan School of Public Health, Harvard University, 677 Huntington Avenue, Boston, MA 02115, USA
- Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore
| | - Swee Hin Teoh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore; (L.S.); (P.M.); (F.Y.); (F.W.); (A.M.H.)
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
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9
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Shao X, Yang Y, Tan Z, Ding Y, Luo E, Jing D, Cai J. Amelioration of bone fragility by pulsed electromagnetic fields in type 2 diabetic KK-Ay mice involving Wnt/β-catenin signaling. Am J Physiol Endocrinol Metab 2021; 320:E951-E966. [PMID: 33719588 DOI: 10.1152/ajpendo.00655.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Type 2 diabetes mellitus (T2DM) results in compromised bone microstructure and quality, and subsequently increased risks of fractures. However, it still lacks safe and effective approaches resisting T2DM bone fragility. Pulsed electromagnetic fields (PEMFs) exposure has proven to be effective in accelerating fracture healing and attenuating osteopenia/osteoporosis induced by estrogen deficiency. Nevertheless, whether and how PEMFs resist T2DM-associated bone deterioration remain not fully identified. The KK-Ay mouse was used as the T2DM model. We found that PEMF stimulation with 2 h/day for 8 wk remarkably improved trabecular bone microarchitecture, decreased cortical bone porosity, and promoted trabecular and cortical bone material properties in KK-Ay mice. PEMF stimulated bone formation in KK-Ay mice, as evidenced by increased serum levels of bone formation (osteocalcin and P1NP), enhanced bone formation rate, and increased osteoblast number. PEMF significantly suppressed osteocytic apoptosis and sclerostin expression in KK-Ay mice. PEMF exerted beneficial effects on osteoblast- and osteocyte-related gene expression in the skeleton of KK-Ay mice. Nevertheless, PEMF exerted no effect on serum biomarkers of bone resorption (TRAcP5b and CTX-1), osteoclast number, or osteoclast-specific gene expression (TRAP and cathepsin K). PEMF upregulated gene expression of canonical Wnt ligands (including Wnt1, Wnt3a, and Wnt10b), but not noncanonical Wnt5a. PEMF also upregulated skeletal protein expression of downstream p-GSK-3β and β-catenin in KK-Ay mice. Moreover, PEMF-induced improvement in bone microstructure, mechanical strength, and bone formation in KK-Ay mice was abolished after intragastric administration with the Wnt antagonist ETC-159. Together, our results suggest that PEMF can improve bone microarchitecture and quality by enhancing the biological activities of osteoblasts and osteocytes, which are associated with the activation of the Wnt/β-catenin signaling pathway. PEMF might become an effective countermeasure against T2DM-induced bone deterioration.NEW & NOTEWORTHY PEMF improved trabecular bone microarchitecture and suppressed cortical bone porosity in T2DM KK-Ay mice. It attenuated T2DM-induced detrimental consequence on trabecular and cortical bone material properties. PEMF resisted bone deterioration in KK-Ay mice by enhancing osteoblast-mediated bone formation. PEMF also significantly suppressed osteocytic apoptosis and sclerostin expression in KK-Ay mice. The therapeutic potential of PEMF on T2DM-induced bone deterioration was associated with the activation of Wnt/ß-catenin signaling.
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MESH Headings
- Animals
- Bone Diseases, Metabolic/etiology
- Bone Diseases, Metabolic/genetics
- Bone Diseases, Metabolic/metabolism
- Bone Diseases, Metabolic/therapy
- Bone and Bones/metabolism
- Bone and Bones/radiation effects
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/therapy
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/therapy
- Electromagnetic Fields
- Glucose/metabolism
- Magnetic Field Therapy/methods
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Osteogenesis/physiology
- Osteogenesis/radiation effects
- Osteoporosis/etiology
- Osteoporosis/genetics
- Osteoporosis/metabolism
- Osteoporosis/therapy
- Wnt Signaling Pathway/radiation effects
- beta Catenin/metabolism
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Affiliation(s)
- Xi Shao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yongqing Yang
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Zhifen Tan
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
- College of Medical technology, Shaanxi University of Chinese Medicine, Xianyang, People's Republic of China
| | - Yuanjun Ding
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Erping Luo
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Da Jing
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jing Cai
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, People's Republic of China
- College of Basic Medicine, Shaanxi University of Chinese Medicine, Xianyang, People's Republic of China
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10
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Benya PD, Kavanaugh A, Zakarian M, Söderlind P, Jashashvili T, Zhang N, Waldorff EI, Ryaby JT, Billi F. Pulsed electromagnetic field (PEMF) transiently stimulates the rate of mineralization in a 3-dimensional ring culture model of osteogenesis. PLoS One 2021; 16:e0244223. [PMID: 33539401 PMCID: PMC7861434 DOI: 10.1371/journal.pone.0244223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/04/2020] [Indexed: 11/25/2022] Open
Abstract
Pulsed Electromagnetic Field (PEMF) has shown efficacy in bone repair and yet the optimum characteristics of this modality and its molecular mechanism remain unclear. To determine the effects of timing of PEMF treatment, we present a novel three-dimensional culture model of osteogenesis that demonstrates strong de novo generation of collagen and mineral matrix and exhibits stimulation by PEMF in multiple stages over 62 days of culture. Mouse postnatal day 2 calvarial pre-osteoblasts were cast within and around Teflon rings by polymerization of fibrinogen and cultured suspended without contact with tissue culture plastic. Ring constructs were exposed to PEMF for 4h/day for the entire culture (Daily), or just during Day1-Day10, Day11-Day 27, or Day28-Day63 and cultured without PEMF for the preceding or remaining days, and compared to no-PEMF controls. PEMF was conducted as HF Physio, 40.85 kHz frequency with a 67 ms burst period and an amplitude of 1.19 mT. Osteogenesis was kinetically monitored by repeated fluorescence measurements of continuously present Alizarin Red S (ARS) and periodically confirmed by micro-CT. PEMF treatment induced early-onset and statistically significant transient stimulation (~4-fold) of the mineralization rate when PEMF was applied Daily, or during D1-D10 and D11-D27. Stimulation was apparent but not significant between D28-D63 by ARS but was significant at D63 by micro-CT. PEMF also shifted the micro-CT density profiles to higher densities in each PEMF treatment group. Ring culture generated tissue with a mineral:matrix ratio of 2.0 by thermogravimetric analysis (80% of the calvaria control), and the deposited crystal structure was 50% hydroxyapatite by X-ray diffraction (63% of the calvaria and femur controls), independent of PEMF. These results were consistent with backscatter, secondary electron, and elemental analysis by scanning electron microscopy. Thus, in a defined, strong osteogenic environment, PEMF applied at different times was capable of further stimulation of osteogenesis with the potential to enhance bone repair.
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Affiliation(s)
- Paul D. Benya
- Department of Orthopaedic Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Aaron Kavanaugh
- Department of Orthopaedic Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Martin Zakarian
- Department of Orthopaedic Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Philip Söderlind
- Department of Architecture and Urban Design, University of California Los Angeles, Los Angeles, California, United States of America
| | - Tea Jashashvili
- Department of Radiology, Molecular Imaging Center, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Nianli Zhang
- Orthofix Medical Inc., Lewisville, Texas, United States of America
| | - Erik I. Waldorff
- Orthofix Medical Inc., Lewisville, Texas, United States of America
| | - James T. Ryaby
- Orthofix Medical Inc., Lewisville, Texas, United States of America
| | - Fabrizio Billi
- Department of Orthopaedic Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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11
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Abd Rabou MA. Effect of Bone Marrow Transplantation on the Fetal Skeleton of Maternally Irradiated Pregnant Rats. Pak J Biol Sci 2021; 24:207-218. [PMID: 33683050 DOI: 10.3923/pjbs.2021.207.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Prenatal exposure to ionizing radiation can interfere with embryonic and fetal growth depending on the dose and gestational age. The present study was completed to evaluate the effect of transplanted bone marrow on the fetal skeleton of pregnant rats exposed to gamma radiation. MATERIALS AND METHODS Experimental animals were separated into 5 groups: C group, R7 group, R7+BM group, R14 group and R14+BM group. All pregnant rats were sacrificed on day 20 days of gestation and the skeletal systems of the fetuses were examined and photographed. This study focused on skull, upper and lower jaw, occipital region, sacral and caudal region, fore and hind limbs. RESULTS Gamma rays caused any disturbance in the ossification process of the skull bones, upper and lower jaws, occipital bones, it caused the loss of some ossification centers in metacarpal bones, metatarsal bones but bone marrow transplantation greatly reduced the injury that happened because of γ-radiation. CONCLUSION This study showed that transplantation of bone marrow post-irradiation in pregnant rats could reduce the hazards of gamma-irradiation in the different regions of the fetal skeleton.
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12
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Careta O, Salicio-Paz A, Pellicer E, Ibáñez E, Fornell J, García-Lecina E, Sort J, Nogués C. Electroless Palladium-Coated Polymer Scaffolds for Electrical Stimulation of Osteoblast-Like Saos-2 Cells. Int J Mol Sci 2021; 22:E528. [PMID: 33430266 PMCID: PMC7825691 DOI: 10.3390/ijms22020528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 12/29/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional porous scaffolds offer some advantages over conventional treatments for bone tissue engineering. Amongst all non-bioresorbable scaffolds, biocompatible metallic scaffolds are preferred over ceramic and polymeric scaffolds, as they can be used as electrodes with different electric field intensities (or voltages) for electric stimulation (ES). In the present work we have used a palladium-coated polymeric scaffold, generated by electroless deposition, as a bipolar electrode to electrically stimulate human osteoblast-like Saos-2 cells. Cells grown on palladium-coated polyurethane foams under ES presented higher proliferation than cells grown on foams without ES for up to 14 days. In addition, cells grown in both conditions were well adhered, with a flat appearance and a typical actin cytoskeleton distribution. However, after 28 days in culture, cells without ES were filling the entire structure, while cells under ES appeared rounded and not well adhered, a sign of cell death onset. Regarding osteoblast differentiation, ES seems to enhance the expression of early expressed genes. The results suggest that palladium-coated polyurethane foams may be good candidates for osteoblast scaffolds and demonstrate that ES enhances osteoblast proliferation up to 14 days and upregulate expression genes related to extracellular matrix formation.
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Affiliation(s)
- Oriol Careta
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (O.C.); (E.I.)
| | - Asier Salicio-Paz
- CIDETEC, Basque Research and Technology Alliance (BRTA), Paseo Miramón 196, E-20014 Donostia-San Sebastián, Spain; (A.S.-P.); (E.G.-L.)
| | - Eva Pellicer
- Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (E.P.); (J.S.)
| | - Elena Ibáñez
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (O.C.); (E.I.)
| | - Jordina Fornell
- Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (E.P.); (J.S.)
| | - Eva García-Lecina
- CIDETEC, Basque Research and Technology Alliance (BRTA), Paseo Miramón 196, E-20014 Donostia-San Sebastián, Spain; (A.S.-P.); (E.G.-L.)
| | - Jordi Sort
- Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (E.P.); (J.S.)
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, E-08180 Barcelona, Spain
| | - Carme Nogués
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; (O.C.); (E.I.)
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13
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Liu C, Sun M, Wang Y, Zhu T, Ye G, You D, Dong L, Zhao W, Cheng K, Weng W, Zhang YS, Yu M, Wang H. Ultraviolet Radiant Energy-Dependent Functionalization Regulates Cellular Behavior on Titanium Dioxide Nanodots. ACS Appl Mater Interfaces 2020; 12:31793-31803. [PMID: 32485098 DOI: 10.1021/acsami.0c07761] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Titanium dioxide (TiO2) photofunctionalization has been demonstrated as an effective surface modification method for the osseointegration of implants. However, the insufficient understanding of the mechanism underlying photofunctionalization limits its clinical applications. Here, we report an ultraviolet (UV) radiant energy-dependent functionalization on TiO2 nanodots (TN) surfaces. We found the cell adhesion, proliferation, and osteogenic differentiation gradually increased with the accumulation of UV radiant energy (URE). The optimal functionalizing treatment energy was found to be 2000 mJ/cm2, which could regulate cell-specific behaviors on TN surfaces. The enhanced cell behaviors were regulated by the adsorption and functional site exposure of the extracellular matrix (ECM) proteins, which were the result of the surface physicochemical changes induced by the URE. The correlation between the URE and the reconstruction of surface hydroxyl groups was considered as an alternative mechanism of this energy-dependent functionalization. We also demonstrated the synergistic effects of FAK-RHOA and ERK1/2 signaling pathways on mediating the URE-dependent cell behaviors. Overall, this study provides a novel insight into the mechanisms of photofunctionalization, guiding the design of implants and the clinical practice of photofunctionalization.
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Affiliation(s)
- Chao Liu
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Mouyuan Sun
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Yu Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Tianer Zhu
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Guanchen Ye
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Dongqi You
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Lingqing Dong
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wenquan Zhao
- The First Affiliated Hospital of Medical College, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Kui Cheng
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Wenjian Weng
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
| | - Mengfei Yu
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
| | - Huiming Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310003, China
- The First Affiliated Hospital of Medical College, Zhejiang University School of Medicine, Hangzhou 310003, China
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14
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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15
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Magri AMP, Fernandes KR, Kido HW, Fernandes GS, Fermino SDS, Gabbai-Armelin PR, Braga FJC, Góes CP, Prado JLDS, Neves Granito R, Rennó ACM. Bioglass/PLGA associated to photobiomodulation: effects on the healing process in an experimental model of calvarial bone defect. J Mater Sci Mater Med 2019; 30:105. [PMID: 31494718 DOI: 10.1007/s10856-019-6307-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
Bioactive glasses (BG) are known for their ability to bond to bone tissue. However, in critical situations, even the osteogenic properties of BG may be not enough to induce bone consolidation. Thus, the enrichment of BG with polymers such as Poly (D, L-lactic-co-glycolic) acid (PLGA) and associated to photobiomodulation (PBM) may be a promising strategy to promote bone tissue healing. The aim of the present study was to investigate the in vivo performance of PLGA supplemented BG, associated to PBM therapy, using an experimental model of cranial bone defect in rats. Rats were distributed in 4 different groups (Bioglass, Bioglass/PBM, Bioglas/PLGA and BG/PLGA/PBM). After the surgical procedure to induce cranial bone defects, the pre-set samples were implanted and PBM treatment (low-level laser therapy) started (808 nm, 100 mW, 30 J/cm2). After 2 and 6 weeks, animals were euthanized, and the samples were retrieved for the histopathological, histomorphometric, picrosirius red staining and immunohistochemistry analysis. At 2 weeks post-surgery, it was observed granulation tissue and areas of newly formed bone in all experimental groups. At 6 weeks post-surgery, BG/PLGA (with or without PBM) more mature tissue around the biomaterial particles. Furthermore, there was a higher deposition of collagen for BG/PLGA in comparison with BG/PLGA/PBM, at second time-point. Histomorphometric analysis demonstrated higher values of BM.V/TV for BG compared to BG/PLGA (2 weeks post-surgery) and N.Ob/T.Ar for BG/PLGA compared to BG and BG/PBM (6 weeks post-surgery). This current study concluded that the use of BG/PLGA composites, associated or not to PBM, is a promising strategy for bone tissue engineering.
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Affiliation(s)
- Angela Maria Paiva Magri
- Federal University of São Paulo (UNIFESP), Rua Silva Jardim, 136, Santos, SP, 11015020, Brazil.
- University Center of the Guaxupé Educational Foundation (UNIFEG), Avenida Dona Floriana, Guaxupé, MG, 37800000, Brazil.
| | | | - Hueliton Wilian Kido
- Federal University of São Paulo (UNIFESP), Rua Silva Jardim, 136, Santos, SP, 11015020, Brazil
| | | | | | | | | | - Cíntia Pereirade Góes
- Federal University of São Paulo (UNIFESP), Rua Silva Jardim, 136, Santos, SP, 11015020, Brazil
| | | | - Renata Neves Granito
- Federal University of São Paulo (UNIFESP), Rua Silva Jardim, 136, Santos, SP, 11015020, Brazil
| | - Ana Claudia Muniz Rennó
- Federal University of São Paulo (UNIFESP), Rua Silva Jardim, 136, Santos, SP, 11015020, Brazil
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16
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Naito Y, Yamada S, Jinno Y, Arai K, Galli S, Ichikawa T, Jimbo R. Bone-Forming Effect of a Static Magnetic Field in Rabbit Femurs. INT J PERIODONT REST 2019; 39:259-264. [PMID: 30794262 DOI: 10.11607/prd.3220] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study investigated the level of magnetic energy around implants possessing a static magnetic field (SMF) and assessed the in vivo influence of SMF on bone regeneration. Implants possessing a sintered neodymium magnet internally were placed in a rabbit femur. An implant without SMF was placed as control. After 12 weeks of healing in vivo, the bone samples were subjected to histologic/histomorphometric evaluation. The bone-to-implant contact for the test group and the control group were 32.4 ± 13.6% and 17.1 ± 4.5%, respectively, and the differences were statistically significant (P < .05). The results suggested that the SMF promoted new bone apposition.
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17
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Wang H, Tang X, Li W, Chen J, Li H, Yan J, Yuan X, Wu H, Liu C. Enhanced osteogenesis of bone marrow stem cells cultured on hydroxyapatite/collagen I scaffold in the presence of low-frequency magnetic field. J Mater Sci Mater Med 2019; 30:89. [PMID: 31342178 DOI: 10.1007/s10856-019-6289-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 01/29/2019] [Indexed: 06/10/2023]
Abstract
As a non-invasive biophysical therapy, electromagnetic fields (EMF) have been widely used to promote the healing of fractures. In the present study, hydroxyapatite/collagen I (HAC) loaded with rabbit bone marrow mesenchymal stem cells (MSCs) were cultured in a dynamic perfusion bioreactor and exposed to EMF of 15 Hz/1mT. Osteogenic differentiation of the seeded cells was analyzed through the evaluation of ALP activity and osteogenesis-related genes expression in vitro. The in vivo osteogenesis efficacy of the cell laden HAC constructs treated with/without EMF was evaluated through a rabbit femur condyle defect model. The results showed that EMF of 15 Hz/1mT could enhance the osteogenic differentiation of the cells seeded on HAC scaffold. Furthermore, the in vivo experiments demonstrated that EMF exposure could promote bone regeneration within the defect and bone integration between the graft and host bone. Taking together, the MSCs seeded HAC scaffold combined with EMF exposure could be a promising approach for bone tissue engineering.
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Affiliation(s)
- Huaixi Wang
- Department of Spine and Spinal Cord Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 Weiwu road, 450003, Zhengzhou, P. R. China
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Xiangyu Tang
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Wenkai Li
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Jingyuan Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Hao Li
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Jiyuan Yan
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Xuefeng Yuan
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China
| | - Hua Wu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China.
| | - Chaoxu Liu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, 430030, Wuhan, P. R. China.
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Wang YY, Pu XY, Shi WG, Fang QQ, Chen XR, Xi HR, Gao YH, Zhou J, Xian CJ, Chen KM. Pulsed electromagnetic fields promote bone formation by activating the sAC-cAMP-PKA-CREB signaling pathway. J Cell Physiol 2019; 234:2807-2821. [PMID: 30067871 DOI: 10.1002/jcp.27098] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023]
Abstract
The application of pulsed electromagnetic fields (PEMFs) in the prevention and treatment of osteoporosis has long been an area of interest. However, the clinical application of PEMFs remains limited because of the poor understanding of the PEMF action mechanism. Here, we report that PEMFs promote bone formation by activating soluble adenylyl cyclase (sAC), cyclic adenosine monophosphate (cAMP), protein kinase A (PKA), and cAMP response element-binding protein (CREB) signaling pathways. First, it was found that 50 Hz 0.6 millitesla (mT) PEMFs promoted osteogenic differentiation of rat calvarial osteoblasts (ROBs), and that PEMFs activated cAMP-PKA-CREB signaling by increasing intracellular cAMP levels, facilitating phosphorylation of PKA and CREB, and inducing nuclear translocation of phosphorylated (p)-CREB. Blocking the signaling by adenylate cyclase (AC) and PKA inhibitors both abolished the osteogenic effect of PEMFs. Second, expression of sAC isoform was found to be increased significantly by PEMF treatment. Blocking sAC using sAC-specific inhibitor KH7 dramatically inhibited the osteogenic differentiation of ROBs. Finally, the peak bone mass of growing rats was significantly increased after 2 months of PEMF treatment with 90 min/day. The serum cAMP content, p-PKA, and p-CREB as well as the sAC protein expression levels were all increased significantly in femurs of treated rats. The current study indicated that PEMFs promote bone formation in vitro and in vivo by activating sAC-cAMP-PKA-CREB signaling pathway of osteoblasts directly or indirectly.
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Affiliation(s)
- Yuan-Yuan Wang
- Department of Bioengineering, School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Xiu-Ying Pu
- Department of Bioengineering, School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, China
| | - Wen-Gui Shi
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Qing-Qing Fang
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Xin-Ru Chen
- Department of Biology, College of Life Sciences, Northwest A & F University, Yanglin, China
| | - Hui-Rong Xi
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Yu-Hai Gao
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Jian Zhou
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
| | - Cory J Xian
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Ke-Ming Chen
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China
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Zhang J, Zheng L, Wang Z, Pei H, Hu W, Nie J, Shang P, Li B, Hei TK, Zhou G. Lowering iron level protects against bone loss in focally irradiated and contralateral femurs through distinct mechanisms. Bone 2019; 120:50-60. [PMID: 30304704 DOI: 10.1016/j.bone.2018.10.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 09/21/2018] [Accepted: 10/06/2018] [Indexed: 12/20/2022]
Abstract
Radiation therapy leads to increased risk of late-onset fragility and bone fracture due to the loss of bone mass. On the other hand, iron overloading causes osteoporosis by enhancing bone resorption. It has been shown that total body irradiation increases iron level, but whether the systemic bone loss is related to the changes in iron level and hepcidin regulation following bone irradiation remains unknown. To investigate the potential link between them, we first created an animal model of radiation-induced systemic bone loss by targeting the mid-shaft femur with a single 2 Gy dose of X-rays. We found that mid-shaft femur focal irradiation led to structural deterioration in the distal region of the trabecular bone with increased osteoclasts surface and expressions of bone resorption markers in both irradiated and contralateral femurs relative to non-irradiated controls. Following irradiation, reduced hepcidin activity of the liver contributed to elevated iron levels in the serum and liver. By injecting hepcidin or deferoxamine (an iron chelator) to reduce iron level, deterioration of trabecular bone microarchitecture in irradiated mice was abrogated. The ability of iron chelation to inhibit radiation-induced osteoclast differentiation was observed in vitro as well. We further showed that ionizing radiation (IR) directly stimulated osteoclast differentiation and bone resorption in bone marrow cells isolated not from contralateral femurs but from directly irradiated femurs. These results suggest that increased iron levels after focal radiation is at least one of the main reasons for systemic bone loss. Furthermore, bone loss in directly irradiated bones is not only due to the elevated iron level, but also from increased osteoclast differentiation. In contrast, the bone loss in the contralateral femurs is mainly due to the elevated iron level induced by IR alone. These novel findings provide proof-of-principle evidence for the use of iron chelation or hepcidin as therapeutic treatments for IR-induced osteoporosis.
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Affiliation(s)
- Jian Zhang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Lijun Zheng
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Ziyang Wang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Hailong Pei
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Wentao Hu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Jing Nie
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Peng Shang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; Research & Development Institute in Shenzhen, Northwestern Polytechnical University, Shenzhen, China
| | - Bingyan Li
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Department of Nutrition and Food Hygiene, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Tom K Hei
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China; Center for Radiological Research, College of Physician and Surgeons, Columbia University, New York, USA.
| | - Guangming Zhou
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
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20
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Grivas KN, Vavva MG, Polyzos D, Carlier A, Geris L, Van Oosterwyck H, Fotiadis DI. Effect of ultrasound on bone fracture healing: A computational mechanobioregulatory model. J Acoust Soc Am 2019; 145:1048. [PMID: 30823826 DOI: 10.1121/1.5089221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 01/12/2019] [Indexed: 06/09/2023]
Abstract
Bone healing process is a complicated phenomenon regulated by biochemical and mechanical signals. Experimental studies have shown that ultrasound (US) accelerates bone ossification and has a multiple influence on cell differentiation and angiogenesis. In a recent work of the authors, a bioregulatory model for providing bone-healing predictions was addressed, taking into account for the first time the salutary effect of US on the involved angiogenesis. In the present work, a mechanobioregulatory model of bone solidification under the US presence incorporating also the mechanical environment on the regeneration process, which is known to affect cellular processes, is presented. An iterative procedure is adopted, where the finite element method is employed to compute the mechanical stimuli at the linear elastic phases of the poroelastic callus region and a coupled system of partial differential equations to simulate the enhancement by the US cell angiogenesis process and thus the oxygen concentration in the fractured area. Numerical simulations with and without the presence of US that illustrate the influence of progenitor cells' origin in the healing pattern and the healing rate and simultaneously demonstrate the salutary effect of US on bone repair are presented and discussed.
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Affiliation(s)
- Konstantinos N Grivas
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500, Patras, Greece
| | - Maria G Vavva
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500, Patras, Greece
| | - Demosthenes Polyzos
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500, Patras, Greece
| | - Aurélie Carlier
- Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300C-PB 2419, B-3001, Leuven, Belgium
| | - Liesbet Geris
- Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300C-PB 2419, B-3001, Leuven, Belgium
| | - Hans Van Oosterwyck
- Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300C-PB 2419, B-3001, Leuven, Belgium
| | - Dimitrios I Fotiadis
- Department of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece
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21
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Fekrazad R, Asefi S, Eslaminejad MB, Taghiar L, Bordbar S, Hamblin MR. Photobiomodulation with single and combination laser wavelengths on bone marrow mesenchymal stem cells: proliferation and differentiation to bone or cartilage. Lasers Med Sci 2019; 34:115-126. [PMID: 30264177 PMCID: PMC6344244 DOI: 10.1007/s10103-018-2620-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/15/2018] [Indexed: 12/21/2022]
Abstract
Tissue engineering aims to take advantage of the ability of undifferentiated stem cells to differentiate into multiple cell types to repair damaged tissue. Photobiomodulation uses either lasers or light-emitting diodes to promote stem cell proliferation and differentiation. The present study aimed to investigate single and dual combinations of laser wavelengths on mesenchymal stem cells (MSCs). MSCs were derived from rabbit iliac bone marrow. One control and eight laser irradiated groups were designated as Infrared (IR, 810 nm), Red (R, 660 nm), Green (G, 532 nm), Blue (B, 485 nm), IR-R, IR-B, R-G, and B-G. Irradiation was repeated daily for 21 days and cell proliferation, osseous, or cartilaginous differentiation was then measured. RT-PCR biomarkers were SOX9, aggrecan, COL 2, and COL 10 expression for cartilage and ALP, COL 1, and osteocalcin expression for bone. Cellular proliferation was increased in all irradiated groups except G. All cartilage markers were significantly increased by IR and IR-B except COL 10 which was suppressed by IR-B combination. ALP expression was highest in R and IR groups during osseous differentiation. ALP was decreased by combinations of IR with B and with R, and also by G alone. R and B-G groups showed stimulated COL 1 expression; however, COL 1 was suppressed in IR-B, IR-R, and G groups. IR significantly increased osteocalcin expression, but in B, B-G, and G groups it was reduced. Cartilage differentiation was stimulated by IR and IR-B laser irradiation. The effects of single or combined laser irradiation were not clear-cut on osseous differentiation. Stimulatory effects on osteogenesis were seen for R and IR lasers, while G laser had inhibitory effects.
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Affiliation(s)
- Reza Fekrazad
- Periodontics Department, Dentistry School, Laser Research Center in Medical Sciences, AJA University of Medical Sciences, Tehran, Iran.
- International Network for Photo Medicine and Photo Dynamic Therapy (INPMPDT), Universal Scientific Education and ResearchNetwork (USERN), Tehran, Iran.
| | - Sohrab Asefi
- Orthodontic Department, Dentistry School, International Campus of Tehran University of Medical Sciences, Tehran, Iran
| | | | - Leila Taghiar
- Department of Stem Cells and Developmental Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Sima Bordbar
- Department of Stem Cells and Developmental Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA.
- Department of Dermatology, Harvard Medical School, Boston, MA, 02115, USA.
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, 02139, USA.
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22
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Nica DF, Heredea ER, Todea DCM. Alveolus soft and bone tissue regeneration after laser biomodulation - a histological study. Rom J Morphol Embryol 2019; 60:1269-1273. [PMID: 32239104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Functional and esthetic recovery of the patient after tooth extraction is a concern in the nowadays-dental medicine. Immediate implant placement in fresh sockets in posterior sides of the jaws is difficult because of the high amount of bone loss and the disparity between the diameter of the alveolus and the implant. The objective is to evaluate the effect of laser biomodulation alveolar socket healing process of healthy patients. A number of 36 molars have been extracted due to advanced caries lesions from the same dental arch but on opposite sites. Laser irradiation was performed on one side after extraction; the other side was used as control. An Epic-X laser diode (Biolase) Indium-Gallium-Arsenide-Phosphorus (In-Ga-As-P) 940 nm was used in a continuous mode, 0.9 W, 36 J for 80 seconds, daily exposure, in the first seven days after extraction. Specimens of soft and hard tissue were surgically incised and removed by a 4.4 mm diameter trepan from the extraction sites, eight weeks after the surgical procedure. The specimens were prepared by use of two staining procedures: Hematoxylin-Eosin (HE) and Mallory's trichrome. The prepared slides were examined under Leica DM750 optical microscope, 5× and 10× magnification. Laser biomodulation therapy accelerates bone formation by increasing osteoblastic activity. The histological study demonstrates early new bone formation, the regeneration effects in fresh intact bony alveolus compared with the soft and bone regeneration level of non-treated fresh alveolus. Laser biomodulation therapy accelerates soft tissue regeneration and bone formation.
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Affiliation(s)
- Diana Florina Nica
- Department of Oral Rehabilitation and Dental Emergencies, Faculty of Dentistry, "Victor Babeş" University of Medicine and Pharmacy, Timişoara, Romania; ,
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Deloch L, Rückert M, Fietkau R, Frey B, Gaipl US. Low-Dose Radiotherapy Has No Harmful Effects on Key Cells of Healthy Non-Inflamed Joints. Int J Mol Sci 2018; 19:ijms19103197. [PMID: 30332826 PMCID: PMC6214021 DOI: 10.3390/ijms19103197] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 02/02/2023] Open
Abstract
Low-dose radiotherapy (LD-RT) for benign inflammatory and/or bone destructive diseases has been used long. Therefore, mechanistic investigations on cells being present in joints are mostly made in an inflammatory setting. This raises the question whether similar effects of LD-RT are also seen in healthy tissue and thus might cause possible harmful effects. We performed examinations on the functionality and phenotype of key cells within the joint, namely on fibroblast-like synoviocytes (FLS), osteoclasts and osteoblasts, as well as on immune cells. Low doses of ionizing radiation showed only a minor impact on cytokine release by healthy FLS as well as on molecules involved in cartilage and bone destruction and had no significant impact on cell death and migration properties. The bone resorbing abilities of healthy osteoclasts was slightly reduced following LD-RT and a positive impact on bone formation of healthy osteoblasts was observed after in particular exposure to 0.5 Gray (Gy). Cell death rates of bone-marrow cells were only marginally increased and immune cell composition of the bone marrow showed a slight shift from CD8+ to CD4+ T cell subsets. Taken together, our results indicate that LD-RT with particularly a single dose of 0.5 Gy has no harmful effects on cells of healthy joints.
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Affiliation(s)
- Lisa Deloch
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Michael Rückert
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Rainer Fietkau
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Benjamin Frey
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Udo S Gaipl
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
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Zaccara IM, Mestieri LB, Moreira MS, Grecca FS, Martins MD, Kopper PMP. Photobiomodulation therapy improves multilineage differentiation of dental pulp stem cells in three-dimensional culture model. J Biomed Opt 2018; 23:1-9. [PMID: 30203632 DOI: 10.1117/1.jbo.23.9.095001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
Photobiomodulation therapy (PBM) has shown positive effects on stem cell differentiation in monolayer cell culture model, but little is known about its effect on three-dimensional (3-D) agarose gel culture. This study evaluated the PBM effect of human dental pulp stem cells (hDPSCs) differentiation and phosphatase alkaline activity (ALP) using an agarose 3-D model under different nutritional conditions. hDPSCs were characterized and seeded on a 0.3% agarose gel layer with different media (osteogenic, adipogenic, chondrogenic) and were assigned into four groups: control 10% fetal bovine serum (FBS), control 5% FBS, PBM 10% FBS, and PBM 5% FBS. Irradiation was performed with continuous-wave InGaAlP laser, 660 nm, 100 mW, 3,3 J / cm2, spot size 0.3 cm2, 10 s of exposure time, and 1 J of energy per point with 6-h interval between sessions. All groups were evaluated at 7 and 14 days. ALP assay was performed to analyze the deposition of mineralized tissue. At 7 days, PBM 5% FBS group presented better stimulation in osteogenic and adipogenic differentiation compared with control. After 14 days, hDPSCs cultured in 3-D exhibited osteogenic, adipogenic, and chondrogenic differentiation; furthermore, compared to control, PBM significantly stimulated all differentiation processes (p < 0.05). It can be concluded that hDPSCs cultured in 3-D agarose associated to PBM could be a promising tool for tissue engineering applications.
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Affiliation(s)
- Ivana Maria Zaccara
- Federal University of Rio Grande do Sul-UFRGS, School of Dentistry, Graduate Program, Department of, Brazil
| | - Letícia Boldrin Mestieri
- Federal University of Rio Grande do Sul-UFRGS, School of Dentistry, Graduate Program, Department of, Brazil
| | | | - Fabiana Soares Grecca
- Federal University of Rio Grande do Sul-UFRGS, School of Dentistry, Graduate Program, Department of, Brazil
| | - Manoela Domingues Martins
- Federal University of Rio Grande do Sul-UFRGS, School of Dentistry, Graduate Program, Department of, Brazil
| | - Patrícia Maria Poli Kopper
- Federal University of Rio Grande do Sul-UFRGS, School of Dentistry, Graduate Program, Department of, Brazil
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25
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Starichenko VI. Hereditary component of variation in 90Sr deposition in inbred mice under exogenous conditions that affect bone formation. Appl Radiat Isot 2018; 140:126-132. [PMID: 30015041 DOI: 10.1016/j.apradiso.2018.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 05/17/2018] [Accepted: 07/05/2018] [Indexed: 11/17/2022]
Abstract
Bone-seeking radionuclides (specifically 90Sr) accumulate in the bone tissue and act as a long-term source of internal irradiation. Their behaviour in the body has been studied in detail, while the impact of inheritance has not been established. On one hand, the genetic determination of both skeletal morphology and calcium metabolism is indirect evidence that the kinetics of deposition of alkaline-earth radioisotopes in the skeleton also have a hereditary component. On the other hand, analysis of 90Sr kinetics in different inbred mouse strains did not reveal any differences between the mice. This study used a classical approach to evaluating the hereditary component of variation in quantitative traits, namely, a variant of familial analysis (the method of twin families). The growth of the skeleton is known to be accompanied by distinct changes in 90Sr accumulation. That is why the hereditary (familial) component of variation in 90Sr kinetics in the bone tissue of CBA mice was analyzed under the influences that modify growth processes Individual parameters of 90Sr accumulation differed between experimental groups by a factor of 2-4.5. At the same time, features of 90Sr accumulation proved to be characteristic of entire families. The results show that the intrafamilial correlation in 90Sr deposition in the skeleton is highly significant (R = 0.542, P ≤ 0.0001) and comparable to that of morphological parameters (R = 0.532-0.546, P ≤ 0.0001). The results confirm the existence of statistically significant intrafamilial correlations of weight and metabolic parameters, which is similarly expressed in different families, thereby providing evidence for hereditary determination of 90Sr metabolism. At the same time, the stability of 90Sr metabolism inheritance to changes in morphophysiology and environmental influences (including those close to pathogenic ones) is shown. This is evidence of its authenticity and significance. The results obtained can be extrapolated to humans instead of directly analyzing the role of hereditary factors in the metabolism of toxic compounds, which are difficult and unethical to perform in human subjects.
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Affiliation(s)
- V I Starichenko
- Institute of Plants and Animal Ecology UB RAS, Vos'mogo Marta St. 202, Yekaterinburg 620144, Russia.
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26
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Tani A, Chellini F, Giannelli M, Nosi D, Zecchi-Orlandini S, Sassoli C. Red (635 nm), Near-Infrared (808 nm) and Violet-Blue (405 nm) Photobiomodulation Potentiality on Human Osteoblasts and Mesenchymal Stromal Cells: A Morphological and Molecular In Vitro Study. Int J Mol Sci 2018; 19:ijms19071946. [PMID: 29970828 PMCID: PMC6073131 DOI: 10.3390/ijms19071946] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/15/2018] [Accepted: 06/29/2018] [Indexed: 01/08/2023] Open
Abstract
Photobiomodulation (PBM) has been used for bone regenerative purposes in different fields of medicine and dentistry, but contradictory results demand a skeptical look for its potential benefits. This in vitro study compared PBM potentiality by red (635 ± 5 nm) or near-infrared (NIR, 808 ± 10 nm) diode lasers and violet-blue (405 ± 5 nm) light-emitting diode operating in a continuous wave with a 0.4 J/cm2 energy density, on human osteoblast and mesenchymal stromal cell (hMSC) viability, proliferation, adhesion and osteogenic differentiation. PBM treatments did not alter viability (PI/Syto16 and MTS assays). Confocal immunofluorescence and RT-PCR analyses indicated that red PBM (i) on both cell types increased vinculin-rich clusters, osteogenic markers expression (Runx-2, alkaline phosphatase, osteopontin) and mineralized bone-like nodule structure deposition and (ii) on hMSCs induced stress fiber formation and upregulated the expression of proliferation marker Ki67. Interestingly, osteoblast responses to red light were mediated by Akt signaling activation, which seems to positively modulate reactive oxygen species levels. Violet-blue light-irradiated cells behaved essentially as untreated ones and NIR irradiated ones displayed modifications of cytoskeleton assembly, Runx-2 expression and mineralization pattern. Although within the limitations of an in vitro experimentation, this study may suggest PBM with 635 nm laser as potential effective option for promoting/improving bone regeneration.
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Affiliation(s)
- Alessia Tani
- Department of Experimental and Clinical Medicine-Section of Anatomy and Histology, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
| | - Flaminia Chellini
- Department of Experimental and Clinical Medicine-Section of Anatomy and Histology, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
| | - Marco Giannelli
- Odontostomatologic Laser Therapy Center, via dell' Olivuzzo 162, 50143 Florence, Italy.
| | - Daniele Nosi
- Department of Experimental and Clinical Medicine-Section of Anatomy and Histology, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
| | - Sandra Zecchi-Orlandini
- Department of Experimental and Clinical Medicine-Section of Anatomy and Histology, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
| | - Chiara Sassoli
- Department of Experimental and Clinical Medicine-Section of Anatomy and Histology, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
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Zhu BY, Yang ZD, Chen XR, Zhou J, Gao YH, Xian CJ, Chen KM. Exposure Duration Is a Determinant of the Effect of Sinusoidal Electromagnetic Fields on Peak Bone Mass of Young Rats. Calcif Tissue Int 2018; 103:95-106. [PMID: 29362823 DOI: 10.1007/s00223-018-0396-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/17/2018] [Indexed: 11/26/2022]
Abstract
We proposed a three-step strategy to obtain the optimal therapeutic parameters, which is composed of large-scale screening at cellular level, verification in animal experiments, and confirmation by a clinical trial. The objective of the current study was to test the feasibility of our strategy. Newborn rat calvarial osteoblasts were treated by 50 Hz 1.8 mT sinusoidal electromagnetic fields (SEMFs) with 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 h/days, respectively. The osteogenic differentiation and maturation of the osteoblast were assayed and compared to obtain the optimal duration. One-month-old growing rats were then treated by the same SEMFs with 0.5, 1.5, and 2.5 h/days, respectively, and the peak bone mass was analyzed after 2 months. It was found that the optimal exposure duration to promote the osteogenic differentiation and maturation of osteoblasts was 1.5 h/days, judging by the increasing degrees of ALP activity, calcified nodules formed, the gene and protein expression levels of Runx-2, BMP-2, and Col-I, as well as the expression levels of signaling proteins of the BMP-2/Smad1/5/8 pathway. The highest increase of peak bone mass after 2 months was also obtained by 1.5 h/days, judging by the results of X-ray dual-energy absorptiometry, mechanical property analysis, micro-CT scanning, and serum bone turnover marker examinations. The above results indicated that exposure duration is a determinant for the therapeutic effect of EMFs, and the optimal therapeutic effects only can be obtained by the optimal exposure duration.
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Affiliation(s)
- B Y Zhu
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - Z D Yang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China.
| | - X R Chen
- College of Life Sciences, Northwest A & F University, Yanglin, 712100, People's Republic of China
| | - J Zhou
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - Y H Gao
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - C J Xian
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, 5001, Australia
| | - K M Chen
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China.
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Pacifici M. Acquired and congenital forms of heterotopic ossification: new pathogenic insights and therapeutic opportunities. Curr Opin Pharmacol 2018; 40:51-58. [PMID: 29614433 PMCID: PMC6015534 DOI: 10.1016/j.coph.2018.03.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/20/2018] [Indexed: 12/27/2022]
Abstract
Heterotopic ossification (HO) involves the formation and accumulation of extraskeletal bone tissue at the expense of local tissues including muscles and connective tissues. There are common forms of HO that are triggered by extensive trauma, burns and other bodily insults, and there are also rare congenital severe forms of HO that occur in children with Fibrodysplasia Ossificans Progressiva or Progressive Osseous Heteroplasia. Given that HO is often preceded by inflammation, current treatments usually involve anti-inflammatory drugs alone or in combination with local irradiation, but are not very effective. Recent studies have provided novel insights into the pathogenesis of acquired and genetic forms of HO and have used the information to conceive and test new and more specific therapies in animal models. In this review, I provide salient examples of these exciting and promising advances that are undoubtedly paving the way toward resolution of this debilitating and at times fatal disease.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/therapeutic use
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Bone Diseases, Metabolic/diagnosis
- Bone Diseases, Metabolic/genetics
- Bone Diseases, Metabolic/physiopathology
- Bone Diseases, Metabolic/therapy
- Bone and Bones/drug effects
- Bone and Bones/pathology
- Bone and Bones/physiopathology
- Bone and Bones/radiation effects
- Drug Discovery/methods
- Genetic Predisposition to Disease
- Humans
- Molecular Targeted Therapy
- Myositis Ossificans/diagnosis
- Myositis Ossificans/genetics
- Myositis Ossificans/physiopathology
- Myositis Ossificans/therapy
- Ossification, Heterotopic/diagnosis
- Ossification, Heterotopic/genetics
- Ossification, Heterotopic/physiopathology
- Ossification, Heterotopic/therapy
- Osteogenesis/drug effects
- Osteogenesis/genetics
- Osteogenesis/radiation effects
- Phenotype
- Skin Diseases, Genetic/diagnosis
- Skin Diseases, Genetic/genetics
- Skin Diseases, Genetic/physiopathology
- Skin Diseases, Genetic/therapy
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Affiliation(s)
- Maurizio Pacifici
- Translational Research Program in Pediatric Orthopaedics, Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
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de Freitas NR, Guerrini LB, Esper LA, Sbrana MC, Dalben GDS, Soares S, de Almeida ALPF. Evaluation of photobiomodulation therapy associated with guided bone regeneration in critical size defects. In vivo study. J Appl Oral Sci 2018; 26:e20170244. [PMID: 29742256 PMCID: PMC5933825 DOI: 10.1590/1678-7757-2017-0244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/08/2017] [Accepted: 09/18/2017] [Indexed: 03/25/2024] Open
Abstract
The repair of bone defects raises the interest of investigators in several health specialties. Grafting techniques with bone substitutes and laser therapies have been investigated to replace autogenous bone and accelerate the bone healing process. Objective To evaluate the effect of photobiomodulation therapy (PBMT) associated with guided bone regeneration (GBR) in critical size defects. Material and Methods The study was conducted on 80 male rats (Rattus norvegicus albinus, Wistar) submitted to surgical creation of a critical size defect on the calvaria, divided into eight study groups: group C (control - only blood clot); group M (collagen membrane); group PBMT (photobiomodulation therapy); group AB (autogenous bone); group AB+PBMT; group AB+M; group PBMT+M; group AB+PBMT+M. The animals were killed 30 days postoperatively. After tissue processing, bone regeneration was evaluated by histomorphometric analysis and statistical analyses were performed (Tukey test, p<0.05). Results All groups had greater area of newly formed bone compared to group C (9.96±4.49%). The group PBMT+M (achieved the greater quantity of new bone (64.09±7.62%), followed by groups PBMT (47.67±8.66%), M (47.43±15.73%), AB+PBMT (39.15±16.72%) and AB+PBMT+M (35.82±7.68%). After group C, the groups AB (25.10±16.59%) and AB+M (22.72±13.83%) had the smallest quantities of newly formed bone. The area of remaining particles did not have statistically significant difference between groups AB+M (14.93±8.92%) and AB+PBMT+M (14.76±6.58%). Conclusion The PBMT utilization may be effective for bone repair, when associated with bone regeneration techniques.
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Affiliation(s)
- Nicole Rosa de Freitas
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Pós-Graduação em Reabilitação Oral, Bauru, São Paulo, Brasil
| | - Luísa Belluco Guerrini
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Pós-Graduação em Reabilitação Oral, Bauru, São Paulo, Brasil
| | - Luis Augusto Esper
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Periodontia, Bauru, São Paulo, Brasil
| | - Michyele Cristhiane Sbrana
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Periodontia, Bauru, São Paulo, Brasil
| | - Gisele da Silva Dalben
- Universidade de São Paulo, Hospital de Reabilitação de Anomalias Craniofaciais, Seção de Odontopediatria e Saúde Coletiva, Bauru, São Paulo, Brasil
| | - Simone Soares
- Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Prótese e Periodontia, Bauru, São Paulo, Brasil
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30
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Yang Y, Zhen C, Yang B, Yu Y, Pan J. The effect of 580 nm-based-LED mixed light on growth, adipose deposition, skeletal development, and body temperature of chickens. J Photochem Photobiol B 2018; 183:288-292. [PMID: 29751262 DOI: 10.1016/j.jphotobiol.2018.04.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 04/08/2018] [Accepted: 04/26/2018] [Indexed: 01/04/2023]
Abstract
Though previous study indicated that the 580 nm-yellow-LED-light showed an stimulating effect on growth of chickens, the low luminous efficiency of the yellow LED light cannot reflect the advantage of energy saving. In present study, the cool white LED chips and yellow LED chips have been combined to fabricate the white × yellow mixed LED light, with an enhanced luminous efficiency. A total 300 newly hatched chickens were reared under various mixed LED light. The results indicated that the white × yellow mixed LED light had "double-edged sword" effects on bird's body weight, bone development, adipose deposition, and body temperature, depending on variations in ratios of yellow component. Low yellow ratio of mixed LED light (Low group) inhibited body weight, whereas medium and high yellow ratio of mixed LED light (Medium and High groups) promoted body weight, compared with white LED light (White group). A progressive change in yellow component gave rise to consistent changes in body weight over the entire experiment. Moreover, a positive relationship was observed between yellow component and feed conversion ratio. High group-treated birds had greater relative abdominal adipose weight than Medium group-treated birds (P = 0.048), whereas Medium group-treated birds had greater relative abdominal adipose weight than Low group-treated birds (P = 0.044). We found that mixed light improved body weight by enhancing skeletal development (R2 = 0.5023, P = 0.0001) and adipose deposition (R2 = 0.6012, P = 0.0001). Birds in the Medium, High and Yellow groups attained significantly higher surface temperatures compared with the White group (P = 0.010). The results suggest that the application of the mixed light with high level of yellow component can be used successfully to improve growth and productive performance in broilers.
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Affiliation(s)
- Yefeng Yang
- Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China
| | - Chenghuang Zhen
- Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China
| | - Bo Yang
- Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China
| | - Yonghua Yu
- Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China
| | - Jinming Pan
- Department of Biosystems Engineering, Zhejiang University, Hangzhou 310058, China.
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Zhang H, Gan L, Zhu X, Wang J, Han L, Cheng P, Jing D, Zhang X, Shan Q. Moderate-intensity 4mT static magnetic fields prevent bone architectural deterioration and strength reduction by stimulating bone formation in streptozotocin-treated diabetic rats. Bone 2018; 107:36-44. [PMID: 29111170 DOI: 10.1016/j.bone.2017.10.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/25/2017] [Accepted: 10/25/2017] [Indexed: 01/08/2023]
Abstract
Type 1 diabetes mellitus (T1DM) has been associated with deterioration of bone microarchitecture and strength, resulting in increased fracture risk. Substantial studies have revealed the capacity of moderate-intensity static magnetic fields (SMF) on promoting osteoblastogenesis in vitro and stimulating bone growth and bone regeneration in vivo, whereas it is unknown whether SMF can resist T1DM-associated osteopenia/osteoporosis. We herein investigated the potential effects of whole-body SMF exposure with 4mT on bone loss in streptozotocin-induced T1DM rats. We found that SMF exposure for 16weeks inhibited architectural deterioration of trabecular bone and cortical bone and mechanical strength reduction in T1DM rats, as evidenced by the MicroCT and 3-point bending findings. Our serum biochemical, bone histomorphometric and PCR results revealed that SMF induced higher serum osteocalcin, mineral apposition rate and osteoblast number of trabecular bone, and higher skeletal osteocalcin, BMP2 and Runx2 gene expression in T1DM rats, whereas SMF showed no significant alteration in serum CTX, skeletal osteoclast number, or osteoclastogenesis-related RANKL-RANK signaling gene expression. Together, our findings suggest that moderate SMF prevented bone architectural deterioration and strength reduction by inhibiting the reduction of bone formation in T1DM rats, and indicate that SMF might become a promising biophysical countermeasure for T1DM-related osteopenia/osteoporosis.
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Affiliation(s)
- Hao Zhang
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Lu Gan
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Xiaoquan Zhu
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Jun Wang
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Licun Han
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Peng Cheng
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China
| | - Da Jing
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Xiaodong Zhang
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China.
| | - Qingshun Shan
- Department of Orthopedics, The Affiliated Hospital of Air Force Aviation Medicine Research Institute, Beijing 100089, China.
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32
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Eweida A, Fathi I, Eltawila AM, Elsherif AM, Elkerm Y, Harhaus L, Kneser U, Sakr MF. Pattern of Bone Generation after Irradiation in Vascularized Tissue Engineered Constructs. J Reconstr Microsurg 2018; 34:130-137. [PMID: 29084413 DOI: 10.1055/s-0037-1607322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Regenerative medicine modalities provide promising alternatives to conventional reconstruction techniques but are still deficient after malignant tumor excision or irradiation due to defective vascularization. METHODS We investigated the pattern of bone formation in axially vascularized tissue engineering constructs (AVTECs) after irradiation in a study that mimics the clinical scenario after head and neck cancer. Heterotopic bone generation was induced in a subcutaneously implanted AVTEC in the thigh of six male New Zealand rabbits. The tissue construct was made up of Nanobone (Artoss GmbH; Rostock, Germany) granules mixed with autogenous bone marrow and 80 μL of bone morphogenic protein-2 at a concentration of 1.5 μg/μL. An arteriovenous loop was created microsurgically between the saphenous vessels and implanted in the core of the construct to induce axial vascularization. The constructs were subjected to external beam irradiation on postoperative day 20 with a single dose of 15 Gy. The constructs were removed 20 days after irradiation and subjected to histological and immunohistochemical analysis for vascularization, bone formation, apoptosis, and cellular proliferation. RESULTS The vascularized constructs showed homogenous vascularization and bone formation both in their central and peripheral regions. Although vascularity, proliferation, and apoptosis were similar between central and peripheral regions of the constructs, significantly more bone was formed in the central regions of the constructs. CONCLUSION The study shows for the first time the pattern of bone formation in AVTECs after irradiation using doses comparable to those applied after head and neck cancer. Axial vascularization probably enhances the osteoinductive properties in the central regions of AVTECs after irradiation.
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Affiliation(s)
- Ahmad Eweida
- Head, Neck and Endocrine Surgery Unit, Department of Surgery, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Ibrahim Fathi
- Head, Neck and Endocrine Surgery Unit, Department of Surgery, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Ahmed M Eltawila
- Department of Materials Science, Institute of Graduate Studies and Research, University of Alexandria, Alexandria, Egypt
| | - Ahmad M Elsherif
- Head, Neck and Endocrine Surgery Unit, Department of Surgery, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Yasser Elkerm
- Department of Radiation and Clinical Oncology, Medical Research Institute, University of Alexandria, Alexandria, Egypt
| | - Leila Harhaus
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Ulrich Kneser
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Mahmoud F Sakr
- Head, Neck and Endocrine Surgery Unit, Department of Surgery, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
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Heydari Asl S, Hosseinpoor H, Parivar K, Hayati Roodbari N, Hanaee-Ahvaz H. Physical stimulation and scaffold composition efficiently support osteogenic differentiation of mesenchymal stem cells. Tissue Cell 2018. [PMID: 29429509 DOI: 10.1016/j.tice.2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
BACKGROUND Despite significant achievements in the field of tissue engineering, simplification and improvement of the existing protocols are of great importance. The use of complex differentiation media, due to the presence of multiple factors, may have some undesired effects on cell health and functions. Thus, minimizing the number of involved factors, while maintaining the differentiation efficiency, provides less costly and controllable conditions. Adipose-derived Mesenchymal stem cells (ASCs), the adult stem cells present in adipose tissue, can be a suitable source of stem cells due to abundant and ease of access. The aim of this study is to optimize the osteogenic differentiation of ASCs by chemical composition of scaffold, in the first step, and then by electromagnetic treatments. METHODS ASCs were cultured on PVA/PES scaffold and tissue culture polystyrene surfaces (TCPS) and osteogenic differentiation was performed with either osteogenic medium, or electromagnetic field or both. The impact of each treatment on ASCs growth and proliferation was measured by MTT assay. Changes in gene expression levels of osteogenic-specific markers including ALP and RUNX2 were determined by Real Time PCR. Furthermore, alkaline phosphatase activity and calcium deposition were measured. RESULTS The MTT assay showed the significant effects on cell growth and respiration in scaffold-seeded ASCs treated with electromagnetic field, compared to control TCPS plate. Also, the electromagnetic treatment, increased alkaline phosphatase activity and calcium deposition. Finally, Real Time PCR showed higher expression of ALP and RUNX2 genes in electromagnetic field groups compared to control groups. CONCLUSION It can be concluded that PVA/PES scaffold used in this study improved the osteogenic capacity of ASCs. Moreover, the osteogenic potential of ASCs seeded on PVA/PES scaffold could be augmented by electromagnetic field without any chemical stimulation.
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Affiliation(s)
| | | | - Kazem Parivar
- Islamic Azad University, Science and Research Branch, Tehran, Iran
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Khalifeh JM, Zohny Z, MacEwan M, Stephen M, Johnston W, Gamble P, Zeng Y, Yan Y, Ray WZ. Electrical Stimulation and Bone Healing: A Review of Current Technology and Clinical Applications. IEEE Rev Biomed Eng 2018; 11:217-232. [PMID: 29994564 DOI: 10.1109/rbme.2018.2799189] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Pseudarthrosis is an exceedingly common, costly, and morbid complication in the treatment of long bone fractures and after spinal fusion surgery. Electrical bone growth stimulation (EBGS) presents a unique approach to accelerate healing and promote fusion success rates. Over the past three decades, increased experience and widespread use of EBGS devices has led to significant improvements in stimulation paradigms and clinical outcomes. In this paper, we comprehensively review the literature and examine the history, scientific evidence, available technology, and clinical applications for EBGS. We summarize indications, limitations, and provide an overview of cost-effectiveness and future directions of EBGS technology. Various models of electrical stimulation have been proposed and marketed as adjuncts for spinal fusions and long bone fractures. Clinical studies show variable safety and efficacy of EBGS under different conditions and clinical scenarios. While the results of clinical trials do not support indiscriminate EBGS utilization for any bone injury, the evidence does suggest that EBGS is desirable and cost efficient for certain orthopedic indications, especially when used in combination with standard, first-line treatments. This review should serve as a reference to inform practicing clinicians of available treatment options, facilitate evidence-based decision making, and provide a platform for further research.
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35
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Alwood JS, Tran LH, Schreurs AS, Shirazi-Fard Y, Kumar A, Hilton D, Tahimic CGT, Globus RK. Dose- and Ion-Dependent Effects in the Oxidative Stress Response to Space-Like Radiation Exposure in the Skeletal System. Int J Mol Sci 2017; 18:ijms18102117. [PMID: 28994728 PMCID: PMC5666799 DOI: 10.3390/ijms18102117] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/29/2017] [Accepted: 09/30/2017] [Indexed: 12/12/2022] Open
Abstract
Space radiation may pose a risk to skeletal health during subsequent aging. Irradiation acutely stimulates bone remodeling in mice, although the long-term influence of space radiation on bone-forming potential (osteoblastogenesis) and possible adaptive mechanisms are not well understood. We hypothesized that ionizing radiation impairs osteoblastogenesis in an ion-type specific manner, with low doses capable of modulating expression of redox-related genes. 16-weeks old, male, C57BL6/J mice were exposed to low linear-energy-transfer (LET) protons (150 MeV/n) or high-LET 56Fe ions (600 MeV/n) using either low (5 or 10 cGy) or high (50 or 200 cGy) doses at NASA's Space Radiation Lab. Five weeks or one year after irradiation, tissues were harvested and analyzed by microcomputed tomography for cancellous microarchitecture and cortical geometry. Marrow-derived, adherent cells were grown under osteoblastogenic culture conditions. Cell lysates were analyzed by RT-PCR during the proliferative or mineralizing phase of growth, and differentiation was analyzed by imaging mineralized nodules. As expected, a high dose (200 cGy), but not lower doses, of either 56Fe or protons caused a loss of cancellous bone volume/total volume. Marrow cells produced mineralized nodules ex vivo regardless of radiation type or dose; 56Fe (200 cGy) inhibited osteoblastogenesis by more than 90% (5 weeks and 1 year post-IR). After 5 weeks, irradiation (protons or 56Fe) caused few changes in gene expression levels during osteoblastogenesis, although a high dose 56Fe (200 cGy) increased Catalase and Gadd45. The addition of exogenous superoxide dismutase (SOD) protected marrow-derived osteoprogenitors from the damaging effects of exposure to low-LET (137Cs γ) when irradiated in vitro, but had limited protective effects on high-LET 56Fe-exposed cells. In sum, either protons or 56Fe at a relatively high dose (200 cGy) caused persistent bone loss, whereas only high-LET 56Fe increased redox-related gene expression, albeit to a limited extent, and inhibited osteoblastogenesis. Doses below 50 cGy did not elicit widespread responses in any parameter measured. We conclude that high-LET irradiation at 200 cGy impaired osteoblastogenesis and regulated steady-state gene expression of select redox-related genes during osteoblastogenesis, which may contribute to persistent bone loss.
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Affiliation(s)
- Joshua S Alwood
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Luan H Tran
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Ann-Sofie Schreurs
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Yasaman Shirazi-Fard
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Akhilesh Kumar
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Diane Hilton
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Candice G T Tahimic
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
- Wyle Laboratories, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Ruth K Globus
- Bone and Signaling Laboratory, Space BioSciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
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Zhou XY, Wu SY, Zhang ZC, Wang F, Yang YL, Li M, Wei XZ. Low-intensity pulsed ultrasound promotes endothelial cell-mediated osteogenesis in a conditioned medium coculture system with osteoblasts. Medicine (Baltimore) 2017; 96:e8397. [PMID: 29069035 PMCID: PMC5671868 DOI: 10.1097/md.0000000000008397] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Angiogenesis plays an important role during bone regeneration. Low-intensity pulsed ultrasound (LIPUS) has been proven to accelerate the process of bone fracture healing. However, the mechanism of the effect of LIPUS on bone regeneration is still unclear. In the present study, we used human umbilical vein endothelial cell (HUVEC) and human osteosarcoma cell (MG-63) to investigate the effect of LIPUS stimulation in an endothelial cell-osteoblast coculture system. At the same time, we used transwell and in vitro angiogenesis assay to observe how LIPUS affects endothelial cells. The results demonstrated that LIPUS could significantly increase the migratory ability and promote tube formation in angiogenesis of HUVECs. Furthermore, LIPUS could significantly elevate the expression of osteogenesis-related genes on osteoblasts such as Runt-related transcription factor 2, alkaline phosphatase, Osteorix, and Cyclin-D1, indicating the pro-osteogenesis effect of LIPUS in our coculture system. In conclusion, endothelial cell is involved in LIPUS-accelerated bone regeneration, the positive effect of LIPUS may be transferred via endothelial cells surrounding fracture healing site.
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Affiliation(s)
- Xiao-Yi Zhou
- Department of Orthopedic Surgery, Changhai Hospital
| | - Sui-Yi Wu
- Faculty of Naval Medicine, Second Military Medical University, Shanghai, China
| | | | - Fei Wang
- Department of Orthopedic Surgery, Changhai Hospital
| | - Yi-Lin Yang
- Department of Orthopedic Surgery, Changhai Hospital
| | - Ming Li
- Department of Orthopedic Surgery, Changhai Hospital
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Hosokawa A. Investigation of piezoelectric anisotropy of bovine cortical bone at an ultrasound frequency by coupling an experiment and a simulation. J Acoust Soc Am 2017; 142:EL184. [PMID: 28863579 DOI: 10.1121/1.4996909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An investigation of the piezoelectric anisotropy of bovine cortical bone at 1 MHz was attempted by coupling data obtained from an experiment and a simulation. In the experiment, a piezoelectric cell (PE-cell) was used as an ultrasound receiver. In the PE-cell, the cortical bone disk, which was cut in the direction perpendicular to the bone axis, was electrically shielded. The directivity of the PE-cell was measured at 0°-22.5° and was compared to four simulated results using the piezoelectric finite-difference time-domain method. It was shown that the piezoelectric signal in the bone could be generated by a transverse ultrasound wave.
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Affiliation(s)
- A Hosokawa
- Department of Electrical and Computer Engineering, National Institute of Technology, Akashi College, 679-3 Nishioka, Uozumi, Akashi, Hyogo 674-8501, Japan
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Leegwater NC, Bakker AD, Hogervorst JMA, Nolte PA, Klein-Nulend J. Hypothermia reduces VEGF-165 expression, but not osteogenic differentiation of human adipose stem cells under hypoxia. PLoS One 2017; 12:e0171492. [PMID: 28166273 PMCID: PMC5293214 DOI: 10.1371/journal.pone.0171492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/20/2017] [Indexed: 01/01/2023] Open
Abstract
Cryotherapy is successfully used in the clinic to reduce pain and inflammation after musculoskeletal damage, and might prevent secondary tissue damage under the prevalent hypoxic conditions. Whether cryotherapy reduces mesenchymal stem cell (MSC) number and differentiation under hypoxic conditions, causing impaired callus formation is unknown. We aimed to determine whether hypothermia modulates proliferation, apoptosis, nitric oxide production, VEGF gene and protein expression, and osteogenic/chondrogenic differentiation of human MSCs under hypoxia. Human adipose MSCs were cultured under hypoxia (37°C, 1% O2), hypothermia and hypoxia (30°C, 1% O2), or control conditions (37°C, 20% O2). Total DNA, protein, nitric oxide production, alkaline phosphatase activity, gene expression, and VEGF protein concentration were measured up to day 8. Hypoxia enhanced KI67 expression at day 4. The combination of hypothermia and hypoxia further enhanced KI67 gene expression compared to hypoxia alone, but was unable to prevent the 1.2-fold reduction in DNA amount caused by hypoxia at day 4. Addition of hypothermia to hypoxic cells did not alter the effect of hypoxia alone on BAX-to-BCL-2 ratio, alkaline phosphatase activity, gene expression of SOX9, COL1, or osteocalcin, or nitric oxide production. Hypothermia decreased the stimulating effect of hypoxia on VEGF-165 gene expression by 6-fold at day 4 and by 2-fold at day 8. Hypothermia also decreased VEGF protein expression under hypoxia by 2.9-fold at day 8. In conclusion, hypothermia decreased VEGF-165 gene and protein expression, but did not affect differentiation, or apoptosis of MSCs cultured under hypoxia. These in vitro results implicate that hypothermia treatment in vivo, applied to alleviate pain and inflammation, is not likely to harm early stages of callus formation.
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Affiliation(s)
- Nick C. Leegwater
- Department of Orthopaedics, Spaarne Hospital, Hoofddorp, The Netherlands
| | - Astrid D. Bakker
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Jolanda M. A. Hogervorst
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
| | - Peter A. Nolte
- Department of Orthopaedics, Spaarne Hospital, Hoofddorp, The Netherlands
| | - Jenneke Klein-Nulend
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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Lama A, Santoro A, Corrado B, Pirozzi C, Paciello O, Pagano TB, Russo S, Calignano A, Mattace Raso G, Meli R. Extracorporeal shock waves alone or combined with raloxifene promote bone formation and suppress resorption in ovariectomized rats. PLoS One 2017; 12:e0171276. [PMID: 28158228 PMCID: PMC5291474 DOI: 10.1371/journal.pone.0171276] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/17/2017] [Indexed: 12/18/2022] Open
Abstract
Osteoporosis is a metabolic skeletal disease characterized by an imbalance between osteoclast-mediated bone resorption and osteoblast-mediated bone formation. We examined the beneficial effect of shock waves (SW) alone or in combination with raloxifene (RAL) on bone loss in ovariectomized rats (OVX). Sixteen weeks after surgery, OVX were treated for five weeks with SW at the antero-lateral side of the right hind leg, one session weekly, at 3 Hz (EFD of 0.33 mJ/mm2), or with RAL (5 mg/kg/die, per os) or with SW+RAL. Sera, femurs, tibiae and vertebrae were sampled for following biochemical and histological analysis. SW, alone or combined with RAL, prevented femur weight reduction and the deterioration of trabecular microarchitecture both in femur and vertebrae. All treatments increased Speed of Sound (SoS) values, improving bone mineral density, altered by OVX. Serum parameters involved in bone remodeling (alkaline phosphatase, receptor activator of nuclear factor kappa-B ligand, osteoprotegerin) and osteoblast proliferation (PTH), altered by ovariectomy, were restored by SW and RAL alone or in combination. In tibiae, SW+RAL significantly reduced cathepsin k and TNF-α levels, indicating the inhibition of osteoclast activity, while all treatments significantly increased runt-related transcription factor 2 and bone morphogenetic-2 expression, suggesting an increase in osteoblastogenic activity. Finally, in bone marrow from tibiae, SW or RAL reduced PPARγ and adiponectin transcription, indicating a shift of mesenchymal cells toward osteoblastogenesis, without showing a synergistic effect. Our data indicate SW therapy, alone and in combination with raloxifene, as an innovative strategy to limit the hypoestrogenic bone loss, restoring the balance between bone formation and resorption.
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Affiliation(s)
- Adriano Lama
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Anna Santoro
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
- Program in Integrative Cell Signaling and Neurobiology of Metabolism, Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Bruno Corrado
- Department of Public Health, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Claudio Pirozzi
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Teresa Bruna Pagano
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Sergio Russo
- Department of Public Health, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Antonio Calignano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | | | - Rosaria Meli
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
- * E-mail:
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Zhou Y, Gao Y, Zhen P, Chen K. [Effects of 1.8 mT sinusoidal alternating electromagnetic fields of different frequencies on bone biomechanics of young rats]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2016; 45:561-567. [PMID: 28247597 PMCID: PMC10396987 DOI: 10.3785/j.issn.1008-9292.2016.11.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To study the effects of 1.8 mT sinusoidal electromagnetic fields of different frequencies on bone mineral density (BMD) and biomechanical properties in young rats. Methods: A total of 32 female SD rats (6-week-old) were randomly divided into 4 groups (8 in each):control group, 10 Hz group, 25 Hz group and 40 Hz group. The experimental groups were given 1.8 mT sinusoidal electromagnetic field intervention 90 min per day. The whole body BMD of rats was detected with dual-energy X-ray absorptiometry after 4 and 8 weeks of intervention. After 8 weeks of intervention, all rats were sacrificed, and the BMD of femur and lumbar vertebra, the length and diameter of femur, the width between medial and lateral malleolus were measured. Electronic universal material testing machine was used to obtain biomechanical properties of femur and lumbar vertebra, and micro CT scan was performed to observe micro structures of tibial cancellous bone. Results: Compared with the control group, rats in 10 Hz and 40 Hz groups had higher whole body BMD, BMD of femur, maximum load and yield strength of femur, as well as maximum load and elastic modulus of lumbar vertebra (all P<0.05). But no significant differences in the length and diameter of femur, and the width between medial and lateral malleolus were observed between control group and experimental groups (all P>0.05). Micro CT scan showed that the trabecular number and separation degree, bone volume percentage were significantly increased in 10 Hz and 40 Hz groups (all P<0.01). Rats in 25 Hz group also had higher BMD and better in biomechanical properties than control group, but the differences were not statistically significant (all P>0.05). Conclusion: 10 and 40 Hz of 1.8 mT sinusoidal electromagnetic field can significantly improve the bone density, microstructure and biomechanical properties in young rats.
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Affiliation(s)
- Yanfeng Zhou
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Yuhai Gao
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Ping Zhen
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Keming Chen
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China.
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Harrison A, Lin S, Pounder N, Mikuni-Takagaki Y. Mode & mechanism of low intensity pulsed ultrasound (LIPUS) in fracture repair. Ultrasonics 2016; 70:45-52. [PMID: 27130989 DOI: 10.1016/j.ultras.2016.03.016] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 03/22/2016] [Accepted: 03/28/2016] [Indexed: 06/05/2023]
Abstract
It has been 30years since the first level one clinical trial demonstrated low intensity pulsed ultrasound (LIPUS) could accelerate fracture repair. Since 1994 numerous investigations have been performed on the effect of LIPUS. The majority of these studies have used the same signal parameters comprised of an intensity of 30mW/cm(2) SATA, an ultrasound carrier frequency of 1.5MHz, pulsed at 1kHz with an exposure time of 20minutes per day. These studies show that a biological response is stimulated in the cell which produces bioactive molecules. The production of these molecules, linked with observations demonstrating the enhanced effects on mineralization by LIPUS, might be considered the general manner, or mode, of how LIPUS stimulates fractures to heal. We propose a mechanism for how the LIPUS signal can enhance fracture repair by combining the findings of numerous studies. The LIPUS signal is transmitted through tissue to the bone, where cells translate this mechanical signal to a biochemical response via integrin mechano-receptors. The cells enhance the production of cyclo-oxygenese 2 (COX-2) which in turn stimulates molecules to enhance fracture repair. The aim of this review is to present the state of the art data related to LIPUS effects and mechanism.
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Affiliation(s)
| | - Sheldon Lin
- Department of Orthopedics, Rutgers, New Jersey Medical School, USA
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Fang Q, Li Z, Zhou J, Shi W, Yan J, Chen K. [Genic and non-genic regulation of low frequence pulsed electromagnetic fields on osteoblasts differentiation]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2016; 45:568-574. [PMID: 28247598 PMCID: PMC10397034 DOI: 10.3785/j.issn.1008-9292.2016.11.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To study the genic and non-genic regulation of 50 Hz 0.6 mT pulsed electromagnenic fields (PEMF) on rat calvarial osteoblasts (ROB) differentiation. Methods: ROBs were achieved by enzyme digestion, and treated with 50 Hz 0.6 mT PEMFs for 1.5 hours after subculture. The alkaline phosphatase (ALP) activity, mRNA transcription of ALP, Runx2 and OSX and protein expression of Runx2 and OSX were detected at 0, 3, 6, 9 and 12 hours after PEMF treatment. Results: The ALP activity at 3 hours after treatment was significantly higher than that in the control(P<0.01), while the mRNA transcription of ALP began to increase at 6 hours after treatment. The mRNA transcription of Runx2 increased immediately after treatment and regressed at 6 hours, then increased again. The protein expression of it corresponded but with a little lag. The mRNA transcription of OSX also raised instantly after treatment, then returned to the level of control at 6 hours, and lower than control at 12 hours significantly. The protein expression of it also corresponded but with a bit delay. Conclusions: There are genic regulation for the protein expression of Runx2 and OSX, and non-genic regulation for the ALP activity on the process of 50 Hz 0.6 mT PEMFs prompts ROBs differentiation.
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Affiliation(s)
- Qingqing Fang
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Zhizhong Li
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
| | - Jian Zhou
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Wengui Shi
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Juanli Yan
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China
| | - Keming Chen
- Institute of Orthopaedics Center, Lanzhou General Hospital of PLA, Lanzhou 730050, China.
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de Vasconcellos LMR, Barbara MAM, Rovai EDS, de Oliveira França M, Ebrahim ZF, de Vasconcellos LGO, Porto CD, Cairo CAA. Titanium scaffold osteogenesis in healthy and osteoporotic rats is improved by the use of low-level laser therapy (GaAlAs). Lasers Med Sci 2016; 31:899-905. [PMID: 27056701 DOI: 10.1007/s10103-016-1930-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 03/23/2016] [Indexed: 11/25/2022]
Abstract
The present study aimed to assess the effects of low-level laser therapy (GaAlAs) on the bone repair process within titanium scaffolds in the femurs of healthy and osteoporotic rats. Fifty-six rats were divided into four groups: group Sh: SHAM animals that received scaffolds; group LSh: SHAM animals that received scaffolds and were subjected to laser therapy; group OV: ovarietomized (OVX) animals that received scaffolds; and group LOV: OVX animals that received scaffolds and were subjected to laser therapy. Thirty days following ovariectomy or sham surgery, scaffolds were implanted in the left femurs of all animals in the study. Immediately after opening the surgical site, the inner part of the surgical cavity was stimulated with low-level laser (GaAlAs). In addition to this procedure, the laser group was also subjected to sessions of low-level laser therapy (LLLT) at 48-h intervals, with the first session performed immediately after surgery. The rats were sacrificed at 2 and 6 weeks, time in which femur fragments were submitted for histological and histomorphometric examination, and skin tissue above the scaffold was submitted to histological analysis. At the end of the study, greater bone formation was observed in the animals submitted to LLLT. At 2 and 6 weeks, statistically significant differences were observed between LSh and Sh groups (p = 0.009 and 0.0001) and LOV and OV (p = 0.0001 and 0.0001), respectively. No statistical difference was observed when assessing the estrogen variable. On the basis of our methodology and results, we conclude that LLLT improves and accelerates bone repair within titanium scaffolds in both ovariectomized and healthy rats, when compared to animals not subjected to radiation.
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Affiliation(s)
- Luana Marotta Reis de Vasconcellos
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Engenheiro Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000.
| | - Mary Anne Moreira Barbara
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Engenheiro Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000
| | - Emanuel da Silva Rovai
- Department of Stomatology, Division of Periodontics, School of Dentistry, University of São Paulo, USP, Av. Lineu Prestes, 2227, São Paulo, SP, Brazil, CEP 05508-000
| | - Mariana de Oliveira França
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Engenheiro Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000
| | - Zahra Fernandes Ebrahim
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Engenheiro Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000
| | - Luis Gustavo Oliveira de Vasconcellos
- Department of Prosthodontics and Dental Materials, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Eng. Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000
| | - Camila Deco Porto
- Department of Bioscience and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), Av. Engenheiro Francisco José Longo, 777, São José dos Campos, SP, Brazil, CEP 12245-000
| | - Carlos Alberto Alves Cairo
- Division of Materials, Air and Space Institute, CTA, Praça Mal. do Ar Eduardo Gomes 14, São José dos Campos, 12904-000, SP, Brazil
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Gertsen GI, Ostapchuk RM, Lesovoy AV, Zherebchuk VV. [THE BONE DEFECT HEALING UNDER THE INFLUENCE OF RADIAL EXTRACORPOREAL SHOCK-WAVE THERAPY IN EXPERIMENT]. Klin Khir 2016:54-57. [PMID: 27514097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In experiment on 24 rabbits the processes of reparative osteogenesis in perforated defect of proximal tibial metaphysis under the influence of extracorporeal shock-wave therapy were studied. In accordance to data of clinical, roentgenological and morphological investiagations, conducted in terms 5, 15, 30 and 45 days of observation, there was established, that under the influence of extracorporeal shock-wave therapy in the bone marrow in the traumatic region a vasodilatation, as well as the blood cells exit from capillaries and sinusoid vessels with creation of massive regions of osseous endostal regenerate, guaranteeing the tibial integrity restoration, occurs.
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Hu J, Liao H, Ma Z, Chen H, Huang Z, Zhang Y, Yu M, Chen Y, Xu J. Focal Adhesion Kinase Signaling Mediated the Enhancement of Osteogenesis of Human Mesenchymal Stem Cells Induced by Extracorporeal Shockwave. Sci Rep 2016; 6:20875. [PMID: 26863924 PMCID: PMC4750003 DOI: 10.1038/srep20875] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 01/11/2016] [Indexed: 02/05/2023] Open
Abstract
Extracorporeal shockwave (ESW) has been shown of great potential in promoting the osteogenesis of bone marrow mesenchymal stem cells (BMSCs), but it is unknown whether this osteogenic promotion effect can also be achieved in other MSCs (i.e., tendon-derived stem cells (TDSCs) and adipose-derived stem cells (ADSCs)). In the current study, we aimed not only to compare the osteogenic effects of BMSCs induced by ESW to those of TDSCs and ADSCs; but also to investigate the underlying mechanisms. We show here that ESW (0.16 mj/mm(2)) significantly promoted the osteogenic differentiation in all the tested types of MSCs, accompanied with the downregulation of miR-138, but the activation of FAK, ERK1/2, and RUNX2. The enhancement of osteogenesis in these MSCs was consistently abolished when the cells were pretreated with one of the following conditions: overexpression of miR-138, FAK knockdown using specific siRNA, and U0126, implying that all of these elements are indispensable for mediating the effect of ESW. Moreover, our study provides converging genetic and molecular evidence that the miR-138-FAK-ERK1/2-RUNX2 machinery can be generally activated in ESW-preconditioned MSCs, suggesting that ESW may be a promising therapeutic strategy for the enhancement of osteogenesis of MSCs, regardless of their origins.
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Affiliation(s)
- Jun Hu
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Haojie Liao
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Zebin Ma
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Hongjiang Chen
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Zhonglian Huang
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Yuantao Zhang
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Menglei Yu
- The Sun-Yat-Sen Memorial Hospital, Sun-Yat-Sen University, Guangdong Province, China
| | - Youbin Chen
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
| | - Jiankun Xu
- Department of Orthopaedics, the First Affiliated Hospital, Shantou University Medical College, Guangdong Province, China
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
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Shirazi-Fard Y, Alwood JS, Schreurs AS, Castillo AB, Globus RK. Mechanical loading causes site-specific anabolic effects on bone following exposure to ionizing radiation. Bone 2015; 81:260-269. [PMID: 26191778 DOI: 10.1016/j.bone.2015.07.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 07/03/2015] [Accepted: 07/15/2015] [Indexed: 12/17/2022]
Abstract
During spaceflight, astronauts will be exposed to a complex mixture of ionizing radiation that poses a risk to their health. Exposure of rodents to ionizing radiation on Earth causes bone loss and increases osteoclasts in cancellous tissue, but also may cause persistent damage to stem cells and osteoprogenitors. We hypothesized that ionizing radiation damages skeletal tissue despite a prolonged recovery period, and depletes the ability of cells in the osteoblast lineage to respond at a later time. The goal of the current study was to test if irradiation prevents bone accrual and bone formation induced by an anabolic mechanical stimulus. Tibial axial compression was used as an anabolic stimulus after irradiation with heavy ions. Mice (male, C57BL/6J, 16 weeks) were exposed to high atomic number, high energy (HZE) iron ions ((56)Fe, 2 Gy, 600 MeV/ion) (IR, n=5) or sham-irradiated (Sham, n=5). In vivo axial loading was initiated 5 months post-irradiation; right tibiae in anesthetized mice were subjected to an established protocol known to stimulate bone formation (cyclic 9N compressive pulse, 60 cycles/day, 3 day/wk for 4 weeks). In vivo data showed no difference due to irradiation in the apparent stiffness of the lower limb at the initiation of the axial loading regimen. Axial loading increased cancellous bone volume by microcomputed tomography and bone formation rate by histomorphometry in both sham and irradiated animals, with a main effect of axial loading determined by two-factor ANOVA with repeated measure. There were no effects of radiation in cancellous bone microarchitecture and indices of bone formation. At the tibia diaphysis, results also revealed a main effect of axial loading on structure. Furthermore, irradiation prevented axial loading-induced stimulation of bone formation rate at the periosteal surface of cortical tissue. In summary, axial loading stimulated the net accrual of cancellous and cortical mass and increased cancellous bone formation rate despite prior exposure to ionizing radiation, in this case, HZE particles. Our findings suggest that mechanical stimuli may prove an effective treatment to improve skeletal structure following exposure to ionizing radiation.
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Affiliation(s)
- Yasaman Shirazi-Fard
- Bone and Signaling Laboratory, Space Biosciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Joshua S Alwood
- Bone and Signaling Laboratory, Space Biosciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Ann-Sofie Schreurs
- Bone and Signaling Laboratory, Space Biosciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
| | - Alesha B Castillo
- Department of Mechanical and Aerospace Engineering, New York University, New York, NY, USA.
| | - Ruth K Globus
- Bone and Signaling Laboratory, Space Biosciences Division, NASA Ames Research Center, Mail-Stop 236-7, Moffett Field, CA 94035, USA.
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Han K, Yin WN, Fan JX, Cao FY, Zhang XZ. Photo-Activatable Substrates for Site-Specific Differentiation of Stem Cells. ACS Appl Mater Interfaces 2015; 7:23679-23684. [PMID: 26452046 DOI: 10.1021/acsami.5b07455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this report, a UV sensitive, PEGylated PFSSTKTC (Pro-Phe-Ser-Ser-Thr-Lys-Thr-Cys) peptide was modified on quartz substrate to investigate the spatial controlled differentiation of stem cells. This substrate could restrict the cell adhesion due to the steric hindrance of PEG shell. With UV irradiation, PFSSTKTC became exposed owing to the breakage of o-nitrobenzyl group with the detachment of PEG shell. The irradiation boundary on substrate was stable in the long term. The in vitro osteogenic differentiation results revealed that under the site-specific irradiation, the mesenchymal stem cells (MSCs) could specifically differentiate into osteoblast under the induction of PFSSTKTC peptide. This photoactivatable biomaterial shows great potential for region controllable and precise MSCs differentiation.
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Affiliation(s)
- Kai Han
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan 430072, China
- College of Science, Huazhong Agricultural University , Wuhan 430070, China
| | - Wei-Na Yin
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan 430072, China
| | - Jin-Xuan Fan
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan 430072, China
| | - Feng-Yi Cao
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan 430072, China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University , Wuhan 430072, China
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Iryanov YM, Kiryanov NA. [Reparative Osteogenesis and Angiogenesis in Low Intensity Electromagnetic Radiation of Ultra-High Frequency]. ACTA ACUST UNITED AC 2015:334-40. [PMID: 26495722 DOI: 10.15690/vramn.v70i3.1330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Non-drug correction of reparative bone tissue regeneration in different pathological states - one of the most actual problems of modern medicine. OBJECTIVE Our aim was to conduct morphological analysis of the influence of electromagnetic radiation of ultra-high frequency and low intensity on reparative osteogenesis and angiogenesis in fracture treatment under transosseous osteosynthesis. METHODS A controlled nonrandomized study was carried out. In the experiment conducted on rats we modeled tibial fracture with reposition and fixation of the bone fragments both in control and experimental groups. In the animals of the experimental group the fracture zone was exposed to low intensity electromagnetic radiation of ultra-high frequency. Exposure simulation was performed in the control group. The operated bones were examined using radiography, light and electronic microscopy, X-ray electronic probe microanalysis. RESULTS It has been established that electromagnetic radiation of ultra-high frequency sessions in fracture treatment stimulate secretory activity and degranulation of mast cells, produce microcirculatory bed vascular permeability increase, endotheliocyte migration phenotype expression, provide endovascular endothelial outgrowth formation, activate reparative osteogenesis and angiogenesis while fracture reparation becomes the one of the primary type. The full periosteal, intermediary and intraosteal bone union was defined in 28 days. CONCLUSION Among the therapeutic benefits of electromagnetic radiation of ultra-high frequency in fracture treatment we can detect mast cell secretorv activity stimulation and endovascular anziozenesis activation.
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Ballini A, Mastrangelo F, Gastaldi G, Tettamanti L, Bukvic N, Cantore S, Cocco T, Saini R, Desiate A, Gherlone E, Scacco S. Osteogenic differentiation and gene expression of dental pulp stem cells under low-level laser irradiation: a good promise for tissue engineering. J BIOL REG HOMEOS AG 2015; 29:813-22. [PMID: 26753641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effects of low-level laser therapy (LLLT) has been the focus of recent studies as being assumed responsible for promoting photostimulatory and photobiomodulatory effects in vivo and in vitro, increasing cell metabolism, improving cell regeneration and invoking an anti-inflammatory response. A positive effect of LLLT on the bone proliferation of some cell types has been observed, but little is known about its effect on dental pulp stem cells (DPSCs). Here, we accurately describe the technical procedure to isolate mesenchymal DPSCs, and assay their osteogenic capacity when irradiated with an LLLT source. These preliminary results show that LLLT irradiation influences the in vitro proliferation of DPSCs and increases the expression of essential proteins for bone formation, although it is necessary to carry out further experiments on other cell types and to uniform the methodological designs.
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Affiliation(s)
- A Ballini
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro Bari, Italy
| | - F Mastrangelo
- Unit of Dentistry, IRCCS San Raffaele Scientific Institute, Vita e Salute San Raffaele University, Milano, Italy
| | - G Gastaldi
- Unit of Dentistry, IRCCS San Raffaele Scientific Institute, Vita e Salute San Raffaele University, Milano, Italy
| | - L Tettamanti
- Department of Periodontology and Oral Implantology, Rural Dental College Loni Maharashtra, India
| | - N Bukvic
- University Hospital Bari-Policlinics, Medical Genetics Unit Bari, Italy
| | - S Cantore
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro Bari, Italy
| | - T Cocco
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro Bari, Italy
| | - R Saini
- Department of Oral Science, Insubria University of Varese, Varese, Italy
| | - A Desiate
- Department of Interdisciplinary Medicine, University of Bari Aldo Moro Bari, Italy
| | - E Gherlone
- Unit of Dentistry, IRCCS San Raffaele Scientific Institute, Vita e Salute San Raffaele University, Milano, Italy
| | - S Scacco
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro Bari, Italy
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Kook SH, Kim KA, Ji H, Lee D, Lee JC. Irradiation inhibits the maturation and mineralization of osteoblasts via the activation of Nrf2/HO-1 pathway. Mol Cell Biochem 2015; 410:255-66. [PMID: 26346162 DOI: 10.1007/s11010-015-2559-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/03/2015] [Indexed: 01/18/2023]
Abstract
Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) regulates the induction of antioxidant gene expression and protects cells against oxidative injury. However, there are controversial findings regarding the roles of Nrf2 on bone metabolism under oxidative stress. The role of Nrf2 on the differentiation of radiation-exposed osteoblasts is also unclear. We investigated whether Nrf2 negatively or positively affects osteoblast differentiation in response to irradiation. Irradiation inhibited osteoblast differentiation of MC3T3-E1 cells in a dose-dependent manner. This inhibition was evidenced by the irradiation-mediated decreases in bone-like nodule formation, alkaline phosphatase (ALP) activity, calcium accumulation, and expression of osteoblast markers, such as ALP, osteocalcin, osteopontin, bone sialoprotein, osterix, and Runx2. These reductions were accompanied by increased induction of Nrf2 and heme oxygenase-1 (HO-1), accumulation of cellular oxidants, and depletion of antioxidant defense enzymes. siRNA-mediated silencing of Nrf2 markedly reversed the negative effect of irradiation on osteoblast differentiation of the cells, leading to a decrease in HO-1 and an increase in Runx2 levels. Irradiation-mediated decreases in the levels of Runx2 and osteocalcin mRNA, but not of Nrf2 protein, were also significantly inhibited by HO-1 inhibitor, zinc protoporphyrin IX. Furthermore, N-acetyl cysteine restored all of the changes induced by irradiation to near-normal levels in the cells. These results demonstrate that irradiation inhibits osteoblast differentiation and mineralization of MC3T3-E1 cells through the oxidative stress-mediated activation of Nrf2/HO-1 pathway.
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Affiliation(s)
- Sung-Ho Kook
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 561-756, South Korea
- Research Center of Bioactive Materials and Institute of Molecular Biology and Genetics, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Kyoung-A Kim
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 561-756, South Korea
- Department of Oral and Maxillofacial Radiology and Research Institute of Clinical Medicine, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Hyeok Ji
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Daewoo Lee
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Jeong-Chae Lee
- Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, 561-756, South Korea.
- Research Center of Bioactive Materials and Institute of Molecular Biology and Genetics, Chonbuk National University, Jeonju, 561-756, South Korea.
- Department of Orthodontics and Institute of Oral Biosciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju, 561-756, South Korea.
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