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Kobayashi-Sun J, Kobayashi I, Kashima M, Hirayama J, Kakikawa M, Yamada S, Suzuki N. Extremely low-frequency electromagnetic fields facilitate both osteoblast and osteoclast activity through Wnt/β-catenin signaling in the zebrafish scale. Front Cell Dev Biol 2024; 12:1340089. [PMID: 38385024 PMCID: PMC10879286 DOI: 10.3389/fcell.2024.1340089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/26/2024] [Indexed: 02/23/2024] Open
Abstract
Electromagnetic fields (EMFs) have received widespread attention as effective, noninvasive, and safe therapies across a range of clinical applications for bone disorders. However, due to the various frequencies of devices, their effects on tissues/cells are vary, which has been a bottleneck in understanding the effects of EMFs on bone tissue. Here, we developed an in vivo model system using zebrafish scales to investigate the effects of extremely low-frequency EMFs (ELF-EMFs) on fracture healing. Exposure to 10 millitesla (mT) of ELF-EMFs at 60 Hz increased the number of both osteoblasts and osteoclasts in the fractured scale, whereas 3 or 30 mT did not. Gene expression analysis revealed that exposure to 10 mT ELF-EMFs upregulated wnt10b and Wnt target genes in the fractured scale. Moreover, β-catenin expression was enhanced by ELF-EMFs predominantly at the fracture site of the zebrafish scale. Inhibition of Wnt/β-catenin signaling by IWR-1-endo treatment reduced both osteoblasts and osteoclasts in the fractured scale exposed to ELF-EMFs. These results suggest that ELF-EMFs promote both osteoblast and osteoclast activity through activation of Wnt/β-catenin signaling in fracture healing. Our data provide in vivo evidence that ELF-EMFs generated with a widely used commercial AC power supply have a facilitative effect on fracture healing.
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Affiliation(s)
- Jingjing Kobayashi-Sun
- Department of Clinical Engineering, Faculty of Health Science, Komatsu University, Komatsu, Ishikawa, Japan
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Isao Kobayashi
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Makoto Kashima
- Department of Biomolecular Science, Faculty of Science, Toho University, Funabashi, Chiba, Japan
| | - Jun Hirayama
- Department of Clinical Engineering, Faculty of Health Science, Komatsu University, Komatsu, Ishikawa, Japan
| | - Makiko Kakikawa
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Sotoshi Yamada
- Department of Production System Engineering and Sciences, Faculty of Production System Engineering and Sciences, Komatsu University, Komatsu, Ishikawa, Japan
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
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Popović T, Matavulj M, Nežić L, Radulović TN, Škrbić R. Pulsed electromagnetic field attenuates bone fragility in estrogen-deficient osteoporosis in rats. Technol Health Care 2023:THC220642. [PMID: 36641696 DOI: 10.3233/thc-220642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND The pulsed electromagnetic fields (PEMFs) seem effective in increasing bone mineral density and promoting osteogenesis and bone healing. OBJECTIVE To examine the effect of two different modalities of PEMFs therapy in comparison with the recommended pharmacological treatment on experimental osteoporosis in rats. METHODS The experimental model of estrogen-deficient osteoporosis induced by ovariectomy was used in this study. The animals were exposed to PEMFs of various frequencies (40 Hz and 25 Hzk), intensities (10 mT and 36.4 μT), lengths of exposure, and the effects were compared with the standard treatment with pamidronate, vitamin D, and calcium supplementation. RESULTS The application of PEMF40Hz, significantly reduced the osteoporotic bone loss in female rats that were confirmed with biochemical, biomechanical, and histological analyses. These effects were more pronounced than in osteoporotic animals treated with pamidronate, vitamin D, and calcium supplementation. On the contrary, the exposure to PEMF25Hz did not show restorative effects but led to further progression of osteoporosis. CONCLUSION The exposure to PEMF40Hz, significantly restored osteoporosis and attenuated bone fragility in comparison to the rats exposed to PEMF25Hz or those treated with pamidronate, vitamin D, and calcium supplementation.
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Affiliation(s)
- Tamara Popović
- Institute for Physical Medicine and Rehabilitation "Dr. Miroslav Zotović", Banja Luka, Bosnia and Herzegovina
| | - Milica Matavulj
- Department of Histology and Embryology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Lana Nežić
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - Tatjana Nožica Radulović
- Institute for Physical Medicine and Rehabilitation "Dr. Miroslav Zotović", Banja Luka, Bosnia and Herzegovina
| | - Ranko Škrbić
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
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Jadidi T, Asadian N, Jadidi M, Ali Vafaei A. EMF promote BMSCs differentiation and functional recovery in hemiparkinsonian rats. Neurosci Lett 2022; 784:136765. [PMID: 35777611 DOI: 10.1016/j.neulet.2022.136765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 10/17/2022]
Abstract
Bone marrow mesenchymal stem cells (BMSCs) have self-renewal ability while maintaining the proliferation facility. The BMSCs reproducing ability could affect by electromagnetic fields (EMFs) as a physical inducing factor. We focused on the EMF (400 µT, 75 Hz) exposed multi-potential BMSCs which differentiated and successfully implanted in the substantia nigra pars compacta (SNpc) of Parkinson's disease rat model. The purified BMSCs are exposed to sinusoidal and square waveform EMF (1h/1 week or 7h/1 day) then injected into the left SNpc of Parkinson's rats. To evaluate the morphology of EMF exposed BMSCs, the cresyl violet staining labeled the Nissl bodies. After evaluation of the rat's activity by behavioral tests (open-field and rotarod tests), the brains were obtained for the preparation of SNpc blocks and carry out the cresyl violet staining. Cell morphology proved most cell differentiation to neurons in the sinusoidal EMF groups. In the sinusoidal EMF exposure groups, large and small neurons were seen with apparent synapses. Although in the square EMF exposed groups some neurons were seen, most of the differentiated cells were astrocytes, microglia, and oligodendrocyte. The results confirmed an improvement in locomotors' activity of BMSC alone and sinusoidal EMF exposed groups. We presented a low-frequency EMF (75 Hz) to promote the capability of BMSC proliferation, differentiation to neurons and glial cells, and motor coordination activity in the treatment of hemiparkinsonian rats.
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Affiliation(s)
- Taha Jadidi
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran.
| | - Nader Asadian
- Department of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran
| | - Majid Jadidi
- Department of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Physiology Research Center, Semnan University of Medical Sciences, Semnan, Iran
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Improved osteogenic differentiation by extremely low electromagnetic field exposure: possible application for bone engineering. Histochem Cell Biol 2022; 158:369-381. [PMID: 35751679 PMCID: PMC9512759 DOI: 10.1007/s00418-022-02126-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2022] [Indexed: 11/21/2022]
Abstract
Human periodontal ligament mesenchymal stem cells (hPDLSCs) are a promising cell type model for regenerative medicine applications due to their anti-inflammatory, immunomodulatory and non-tumorigenic potentials. Extremely low-frequency electromagnetic fields (ELF-EMF) are reported to affect biological properties such as cell proliferation and differentiation and modulate gene expression profile. In this study, we investigated the effects of an intermittent ELF-EMF exposure (6 h/day) for the standard differentiation period (28 days) and for 10 days in hPDLSCs in the presence or not of osteogenic differentiation medium (OM). We evaluated cell proliferation, de novo calcium deposition and osteogenic differentiation marker expression in sham and ELF-EMF-exposed cells. After ELF-EMF exposure, compared with sham-exposed, an increase in cell proliferation rate (p < 0.001) and de novo calcium deposition (p < 0.001) was observed after 10 days of exposure. Real-time PCR and Western blot results showed that COL1A1 and RUNX-2 gene expression and COL1A1, RUNX-2 and OPN protein expression were upregulated respectively in the cells exposed to ELF-EMF exposure along with or without OM for 10 days. Altogether, these results suggested that the promotion of osteogenic differentiation is more efficient in ELF-EMF-exposed hPDLSCs. Moreover, our analyses indicated that there is an early induction of hPDLSC differentiation after ELF-EMF application.
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Osteogenesis Modulation: Induction of Mandibular Bone Growth in Adults by Electrical Field for Aesthetic Purposes. Aesthetic Plast Surg 2022; 46:197-206. [PMID: 34622330 PMCID: PMC8831273 DOI: 10.1007/s00266-021-02600-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 09/12/2021] [Indexed: 10/25/2022]
Abstract
BACKGROUND A new technique in plastic surgery termed Osteogenesis Modulation is described. This technique uses a surgically implanted, battery-operated medical device to deliver customized electrical pulses to produce mandibular bone growth. This device was designed to be a temporary, nonpermanent implant. The purpose of this study was to review both the safety and efficacy of Osteogenesis Modulation. METHODS This study comprises two phases. Phase I involved experimental technology development and animal experiments. Phase II included technology development for clinical use and a clinical trial. In Phase II, four patients with a diagnosis of mandibular hypoplasia and microgenia underwent surgical implantation of the novel medical device over the chin bone. Once a satisfactory change of contour of mandibular bone was achieved, the devices were removed. In all patients, the devices were left in place for 12 months, then surgically removed under local anesthesia. Preoperative and long-term postoperative cephalometric controls were done. RESULTS In all patients, symmetrical mandibular bone growth was observed with good-to-excellent aesthetic results. The overall follow-up period was 39 months. Cephalometric controls taken 3 to 6 months after the device removal showed an average increase in mandible length of 5.26mm (range, 2.83-7.60mm) CONCLUSIONS: Preliminary clinical results suggest that Osteogenesis Modulation is a safe, minimally invasive, and effective alternative treatment for the correction of mandibular hypoplasia in selected cases. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Calabrese EJ. Hormesis and bone marrow stem cells: Enhancing cell proliferation, differentiation and resilience to inflammatory stress. Chem Biol Interact 2021; 351:109730. [PMID: 34728189 DOI: 10.1016/j.cbi.2021.109730] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/13/2021] [Accepted: 10/27/2021] [Indexed: 12/21/2022]
Abstract
This paper identifies and provides the first detailed assessment of hormetic dose responses by bone marrow stem cells (BMSCs) from a broad range of animal models and humans with particular emphasis on cell renewal (proliferation), cell differentiation and enhancing resilience to inflammatory stress. Such hormetic dose responses are commonly reported, being induced by a broad range of chemicals, including pharmaceuticals (e.g., caffeine, dexamethasone, nicotine), dietary supplements (e.g., curcumin, Ginkgo biloba, green tea extracts. resveratrol, sulforaphane), endogenous agents (e.g., hydrogen sulfide, interleukin 10), environmental contaminants (e.g., arsenic, PFOS) and physical stressor agents (e.g., EMF, shockwaves). Hormetic dose responses reported here for BMSCs are similar to those induced with other stem cell types [e.g., adipose-derived stem cells (ADSCs), dental pulp stem cells (DPSCs), periodontal ligament stem cells (PDLSCs), neuro stem cells (NSCs), embryonic stem cells (ESCs)], indicating a substantial degree of generality for hormetic responses in stem cells. The paper assesses both the underlying mechanistic foundations of BMSC hormetic responses and their potential therapeutic implications.
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Affiliation(s)
- Edward J Calabrese
- Professor of Toxicology, Environmental Health Sciences, School of Public Health and Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, USA.
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Zhou J, Gao YH, Zhu BY, He WF, Wang G, Xian CJ, Chen KM. The frequency window effect of sinusoidal electromagnetic fields in promoting osteogenic differentiation and bone formation involves extension of osteoblastic primary cilia and activation of protein kinase A. Cell Biol Int 2021; 45:1685-1697. [PMID: 33811714 DOI: 10.1002/cbin.11606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 03/19/2021] [Accepted: 04/01/2021] [Indexed: 01/27/2023]
Abstract
Electromagnetic fields (EMFs) have emerged as a versatile means for osteoporosis treatment and prevention. However, its optimal application parameters are still elusive. Here, we optimized the frequency parameter first by cell culture screening and then by animal experiment validation. Osteoblasts isolated from newborn rats (ROBs) were exposed 90 min/day to 1.8 mT SEMFs at different frequencies (ranging from 10 to 100 Hz, interval of 10 Hz). SEMFs of 1.8 mT inhibited ROB proliferation at 30, 40, 50, 60 Hz, but increased proliferation at 10, 70, 80 Hz. SEMFs of 10, 50, and 70 Hz promoted ROB osteogenic differentiation and mineralization as shown by alkaline phosphatase (ALP) activity, calcium content, and osteogenesis-related molecule expression analyses, with 50 Hz showing greater effects than 10 and 70 Hz. Treatment of young rats with 1.8 mT SEMFs at 10, 50, or 100 Hz for 2 months significantly increased whole-body bone mineral density (BMD) and femur microarchitecture, with the 50 Hz group showing the greatest effect. Furthermore, 1.8 mT SEMFs extended primary cilia lengths of ROBs and increased protein kinase A (PKA) activation also in a frequency-dependent manner, again with 50 Hz SEMFs showing the greatest effect. Pretreatment of ROBs with the PKA inhibitor KT5720 abolished the effects of SEMFs to increase primary cilia length and promote osteogenic differentiation/mineralization. These results indicate that 1.8 mT SEMFs have a frequency window effect in promoting osteogenic differentiation/mineralization in ROBs and bone formation in growing rats, which involve osteoblast primary cilia length extension and PKA activation.
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Affiliation(s)
- Jian Zhou
- Precise Genome Engineering Center, School of Life Sciences, Guangzhou University, Guangzhou, China.,Institute of Orthopaedics, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, China
| | - Yu Hai Gao
- Institute of Orthopaedics, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, China
| | - Bao Ying Zhu
- Institute of Orthopaedics, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, China
| | - Wen Fang He
- Institute of Orthopaedics, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, China
| | - Gang Wang
- Precise Genome Engineering Center, School of Life Sciences, Guangzhou University, Guangzhou, China
| | - Cory J Xian
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia, Australia
| | - Ke Ming Chen
- Institute of Orthopaedics, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, China
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Ye M, Liu W, Yan L, Cheng S, Li X, Qiao S. 3D‑printed Ti6Al4V scaffolds combined with pulse electromagnetic fields enhance osseointegration in osteoporosis. Mol Med Rep 2021; 23:410. [PMID: 33786622 PMCID: PMC8025457 DOI: 10.3892/mmr.2021.12049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 03/08/2021] [Indexed: 12/14/2022] Open
Abstract
The loosening and displacement of prostheses after dental implantation and arthroplasty is a substantial medical burden due to the complex correction surgery. Three-dimensional (3D)-printed porous titanium (pTi) alloy scaffolds are characterized by low stiffness, are beneficial to bone ingrowth, and may be used in orthopedic applications. However, for the bio-inert nature between host bone and implants, titanium alloy remains poorly compatible with osseointegration, especially in disease conditions, such as osteoporosis. In the present study, 3D-printed pTi scaffolds with ideal pore size and porosity matching the bone tissue, were combined with pulse electromagnetic fields (PEMF), an exogenous osteogenic induction stimulation, to evaluate osseointegration in osteoporosis. In vitro, external PEMF significantly improved osteoporosis-derived bone marrow mesenchymal stem cell proliferation and osteogenic differentiation on the surface of pTi scaffolds by enhancing the expression of alkaline phosphatase, runt-related transcription factor-2, osteocalcin, and bone morphogenetic protein-2. In vivo, Microcomputed tomography analysis and histological evaluation indicated the external PEMF markedly enhanced bone regeneration and osseointegration. This novel therapeutic strategy has potential to promote osseointegration of dental implants or artificial prostheses for patients with osteoporosis.
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Affiliation(s)
- Mingfu Ye
- Department of Oral Implantology, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Stomatological Hospital of Xiamen Medical College, Xiamen, Fujian 361008, P.R. China
| | - Wenjun Liu
- Department of Oral Implantology, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Stomatological Hospital of Xiamen Medical College, Xiamen, Fujian 361008, P.R. China
| | - Lihui Yan
- Department of Oral Implantology, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Stomatological Hospital of Xiamen Medical College, Xiamen, Fujian 361008, P.R. China
| | - Shaolong Cheng
- Department of Oral Implantology, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Stomatological Hospital of Xiamen Medical College, Xiamen, Fujian 361008, P.R. China
| | - Xiaoxiong Li
- Department of Pain, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201112, P.R. China
| | - Shichong Qiao
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
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Hao M, Xiong M, Liu Y, Tan WS, Cai H. Magnetic-driven dynamic culture promotes osteogenesis of mesenchymal stem cell. BIORESOUR BIOPROCESS 2021; 8:15. [PMID: 38650266 PMCID: PMC10992147 DOI: 10.1186/s40643-021-00368-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/03/2021] [Indexed: 01/03/2023] Open
Abstract
Effective nutrient transport and appropriate mechanical stimulation play important roles in production of tissue-engineered bone grafts. In this study, an experimental set-up for magnetic-driven dynamic culture of cells was designed to mimic the microenvironment of the bone tissue. Here, its ability to contribute to osteogenic differentiation was investigated by inoculating human umbilical cord mesenchymal stem cells (HUMSCs) on magnetic scaffolds. The cytocompatibility of the developed magnetic scaffolds was verified for HUMSCs. Magnetic scaffolds seeded with HUMSCs were exposed to magnetic fields. The results showed that magnetic fields did not affect cell activity and promoted HUMSCs osteogenic differentiation. The magnetic scaffolds were magnetically driven for dynamic culture in the experimental set-up to evaluate the influence of HUMSCs osteoblast differentiation. The results indicated that magnetic-driven dynamic culture increased cell alkaline phosphatase (ALP) activity (p < 0.05) and calcium release (p < 0.05) compared with static culture. The effect was demonstrated in the expression of bone-associated genes. Overall, this study showed that magnetic-driven dynamic culture is a promising tool for regenerative bone engineering.
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Affiliation(s)
- Mengyang Hao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, P. O. Box 309#, Shanghai, 200237, People's Republic of China
| | - Minghao Xiong
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, P. O. Box 309#, Shanghai, 200237, People's Republic of China
| | - Yangyang Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, P. O. Box 309#, Shanghai, 200237, People's Republic of China
| | - Wen-Song Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, P. O. Box 309#, Shanghai, 200237, People's Republic of China
| | - Haibo Cai
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, P. O. Box 309#, Shanghai, 200237, People's Republic of China.
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Asadian N, Jadidi M, Safari M, Jadidi T, Gholami M. EMF frequency dependent differentiation of rat bone marrow mesenchymal stem cells to astrocyte cells. Neurosci Lett 2020; 744:135587. [PMID: 33373676 DOI: 10.1016/j.neulet.2020.135587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 11/23/2020] [Accepted: 12/16/2020] [Indexed: 10/22/2022]
Abstract
The numerous factors regulate the bone marrow mesenchymal stem cell (BMMSC) self-renewal and differentiation response. We aimed to analyze the influence of electromagnetic field (EMF) as an external inducing factor on rat BMMSC differentiation and proliferation to neuron and astrocyte cells. BMMSCs extracted from the rats femurs and tibias and incubated in a cell-cultured CO2 incubator. After the third passages, the plates selected randomly and then divided into seven groups (Sham exposed, three groups of square, and three groups of sinusoidal waveform EMF (25, 50, and 75 Hz, 400 μT, 1 h/day). The BMMSCs exposed to EMF at the middle of a Helmholtz coil for 7 days. The viable cell counting and proliferation performed by the MTT test and BMMSC differentiation into the neuron and the astrocyte cell was studied by immunocytochemistry staining. The results confirmed BMMSC viability and proliferation rate reduction in sinusoidal 25 Hz, square 50 Hz and sinusoidal 75 Hz EMF groups compare to sham. The maximum BMMSC differentiation to neuron was considered in sinusoidal 50 Hz and 75 Hz EMF groups. The increase of BMMSC differentiation to astrocyte cell was frequency dependent and the most differentiation was shown in square 75 Hz, and sinusoidal 75 Hz EMF groups. In conclusion, the results suggest that both square and sinusoidal EMF could affect BMMSC development and differentiation to neuron and astrocyte cells. Further studies for the consequence of EMF with wider flux density and frequency on BMMSC are recommended.
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Affiliation(s)
- Nader Asadian
- Department of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran
| | - Majid Jadidi
- Department of Medical Physics, Semnan University of Medical Sciences, Semnan, Iran.
| | - Manouchehr Safari
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Taha Jadidi
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Mahbobeh Gholami
- Department of Biochemistry, Semnan University of Medical Sciences, Semnan, Iran
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Bone Morphogenetic Protein-2 Signaling in the Osteogenic Differentiation of Human Bone Marrow Mesenchymal Stem Cells Induced by Pulsed Electromagnetic Fields. Int J Mol Sci 2020; 21:ijms21062104. [PMID: 32204349 PMCID: PMC7139765 DOI: 10.3390/ijms21062104] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 12/12/2022] Open
Abstract
Pulsed electromagnetic fields (PEMFs) are clinically used with beneficial effects in the treatment of bone fracture healing. This is due to PEMF ability to favor the osteogenic differentiation of mesenchymal stem cells (MSCs). Previous studies suggest that PEMFs enhance the osteogenic activity of bone morphogenetic protein-2 (BMP2) which is used in various therapeutic interventions. This study investigated the molecular events associated to the synergistic activity of PEMFs and BMP2 on osteogenic differentiation. To this aim, human MSCs (hMSCs) were exposed to PEMFs (75 Hz, 1.5 mT) in combination with BMP2, upon detection of the minimal dose able to induce differentiation. Changes in the expression of BMP signaling pathway genes including receptors and ligands, as well as in the phosphorylation of BMP downstream signaling proteins, such as SMAD1/5/8 and MAPK, were analyzed. Results showed the synergistic activity of PEMFs and BMP2 on osteogenic differentiation transcription factors and markers. The PEMF effects were associated to the increase in BMP2, BMP6, and BMP type I receptor gene expression, as well as SMAD1/5/8 and p38 MAPK activation. These results increase knowledge concerning the molecular events involved in PEMF stimulation showing that PEMFs favor hMSCs osteogenic differentiation by the modulation of BMP signaling components.
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Chen J, Tu C, Tang X, Li H, Yan J, Ma Y, Wu H, Liu C. The combinatory effect of sinusoidal electromagnetic field and VEGF promotes osteogenesis and angiogenesis of mesenchymal stem cell-laden PCL/HA implants in a rat subcritical cranial defect. Stem Cell Res Ther 2019; 10:379. [PMID: 31842985 PMCID: PMC6915868 DOI: 10.1186/s13287-019-1464-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/13/2019] [Accepted: 10/21/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Restoration of massive bone defects remains a huge challenge for orthopedic surgeons. Insufficient vascularization and slow bone regeneration limited the application of tissue engineering in bone defect. The effect of electromagnetic field (EMF) on bone defect has been reported for many years. However, sinusoidal EMF (SEMF) combined with tissue engineering in bone regeneration remains poorly investigated. METHODS In the present study, we investigated the effect of SEMF and vascular endothelial growth factor (VEGF) on osteogenic and vasculogenic differentiation of rat bone marrow-derived mesenchymal stem cells (rBMSCs). Furthermore, pretreated rBMSC- laden polycaprolactone-hydroxyapatite (PCL/HA) scaffold was constructed and implanted into the subcritical cranial defect of rats. The bone formation and vascularization were evaluated 4 and 12 weeks after implantation. RESULTS It was shown that SEMF and VEGF could enhance the protein and mRNA expression levels of osteoblast- and endothelial cell-related markers, respectively. The combinatory effect of SEMF and VEGF slightly promoted the angiogenic differentiation of rBMSCs. The proteins of Wnt1, low-density lipoprotein receptor-related protein 6 (LRP-6), and β-catenin increased in all inducted groups, especially in SEMF + VEGF group. The results indicated that Wnt/β-catenin pathway might participate in the osteogenic and angiogenic differentiation of rBMSCs. Histological evaluation and reconstructed 3D graphs revealed that tissue-engineered constructs significantly promoted the new bone formation and angiogenesis compared to other groups. CONCLUSION The combinatory effect of SEMF and VEGF raised an efficient approach to enhance the osteogenesis and vascularization of tissue-engineered constructs, which provided a useful guide for regeneration of bone defects.
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Affiliation(s)
- Jingyuan Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Chang Tu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Xiangyu Tang
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Hao Li
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Jiyuan Yan
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Yongzhuang Ma
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China
| | - Hua Wu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China.
| | - Chaoxu Liu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Avenue 1095, Wuhan, 430030, China.
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Liang H, Liu X, Pi Y, Yu Q, Yin Y, Li X, Yang Y, Tian J. 3D-Printed β-Tricalcium Phosphate Scaffold Combined with a Pulse Electromagnetic Field Promotes the Repair of Skull Defects in Rats. ACS Biomater Sci Eng 2019; 5:5359-5367. [PMID: 33464077 DOI: 10.1021/acsbiomaterials.9b00858] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Trauma, infection, cancer, and congenital diseases can lead to bone defects. The combination of 3D printing with biomaterials is of great significance in the treatment of bone defects. In addition, pulse electromagnetic fields (PEMFs) can promote bone regeneration. The main purpose of this study was to evaluate the effects of 3D-printed scaffolds using β-tricalcium phosphate (β-TCP) as the raw material combined with a PEMF on the proliferation and differentiation of rat adipose stem cells (rADSCs) and on the repair of critical defects of the rat skull. The Cell Counting Kit-8 assay was performed to assess the proliferation of rADSCs. Alkaline phosphatase (ALP) activity, ALP staining, and the detection of osteogenic-related gene expression were performed to assess the differentiation of rADSCs. Micro-computed tomography and hematoxylin-eosin staining were used to assess the repair of rat skull defects. The results showed that the combination of the scaffold and PEMF could significantly promote the proliferation and differentiation of rADSCs and the repair of a critical defect in the rat skull. Therefore, the combination of β-TCP and PEMF with 3D printing technology can provide better treatment of clinical bone defect patients.
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Affiliation(s)
- Haifeng Liang
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Xiao Liu
- School of Materials Science and Engineering, South China University of Technology, Wushan, Guangzhou 510640, People's Republic of China
| | - Ying Pi
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Qiang Yu
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Yukun Yin
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Xian Li
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Yipei Yang
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
| | - Jing Tian
- Department of Orthopedics, Zhujiang Hospital, Southern Medical University, No. 253 Industrial Avenue, Haizhu, Guangzhou 510280, People's Republic of China
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Průcha J, Skopalik J, Socha V, Hanáková L, Knopfová L, Hána K. Two types of high inductive electromagnetic stimulation and their different effects on endothelial cells. Physiol Res 2019; 68:611-622. [DOI: 10.33549/physiolres.933998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Effects of low-frequency electromagnetic fields (LF EMF) on the activation of different tissue recovery processes have not yet been fully understood. The detailed quantification of LF EMF effects on the angiogenesis were analysed in our experiments by using cultured human and mouse endothelial cells. Two types of fields were used in the tests as follows: the LF EMF with rectangular pulses, 340-microsecond mode at a frequency of 72 Hz and peak intensity 4 mT, and the LF EMF with sinusoidal alternating waveform 5 000 Hz, amplitude-modulated by means of a special interference spectrum mode set to a frequency linear sweep from 1 to 100 Hz for 6 s and from 100 Hz to 1 Hz return also for 6 s, swing period of 12 second. Basic parameters of cultured cells measured after the LF EMF stimulus were viability and proliferation acceleration. Both types of endothelial cells (mouse and human ones) displayed significant changes in the proliferation after the application of the LF EMF under conditions of a rectangular pulse mode. Based on the results, another test of the stimulation on a more complex endothelial-fibroblast coculture model will be the future step of the investigation.
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Affiliation(s)
| | | | | | - L. Hanáková
- Department of Information and Communication Technologies in Medicine, Faculty of Biomedical Engineering, Czech Technical University in Prague, Kladno, Czech Republic.
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15
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Galli C, Colangelo M, Pedrazzi G, Guizzardi S. The Response of Osteoblasts and Bone to Sinusoidal Electromagnetic Fields: Insights from the Literature. Calcif Tissue Int 2019; 105:127-147. [PMID: 30997574 DOI: 10.1007/s00223-019-00554-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 04/11/2019] [Indexed: 12/23/2022]
Abstract
Electromagnetic fields (EMFs) have been proposed as a tool to ameliorate bone formation and healing. Despite their promising results, however, they have failed to enter routine clinical protocols to treat bone conditions where higher bone mass has to be achieved. This is no doubt also due to a fundamental lack of knowledge and understanding on their effects and the optimal settings for attaining the desired therapeutic effects. This review analysed the available in vitro and in vivo studies that assessed the effects of sinusoidal EMFs (SEMFs) on bone and bone cells, comparing the results and investigating possible mechanisms of action by which SEMFs interact with tissues and cells. The effects of SEMFs on bone have not been as thoroughly investigated as pulsed EMFs; however, abundant evidence shows that SEMFs affect the proliferation and differentiation of osteoblastic cells, acting on multiple cellular mechanisms. SEMFs have also proven to increase bone mass in rodents under normal conditions and in osteoporotic animals.
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Affiliation(s)
- C Galli
- Department of Medicine and Surgery, University of Parma, Parma, Italy.
| | - M Colangelo
- Department of Medicine and Surgery, Histology and Embryology Lab, University of Parma, Parma, Italy
| | - G Pedrazzi
- Department of Medicine and Surgery, Neuroscience Unit, University of Parma, Via Volturno 39, 43126, Parma, Italy
| | - S Guizzardi
- Department of Medicine and Surgery, Histology and Embryology Lab, University of Parma, Parma, Italy
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16
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Xie S, Jiang X, Wang R, Xie S, Hua Y, Zhou S, Yang Y, Zhang J. Low-intensity pulsed ultrasound promotes the proliferation of human bone mesenchymal stem cells by activating PI3K/AKt signaling pathways. J Cell Biochem 2019; 120:15823-15833. [PMID: 31090943 DOI: 10.1002/jcb.28853] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/17/2019] [Accepted: 02/28/2019] [Indexed: 12/27/2022]
Abstract
Low-intensity pulsed ultrasound (LIPUS) is a promising therapy that is widely used in clinical applications and fundamental research. Previous research has shown that LIPUS exposure has a positive effect on stem cell proliferation. However, the impact of LIPUS exposure on human bone marrow mesenchymal stem cells (hBMSCs) remains unknown. In our study, the effect and mechanism of LIPUS exposure on the proliferation of hBMSCs were investigated, and the optimal parameters of LIPUS were determined. hBMSCs were obtained and identified by flow cytometry, and the proliferation of hBMSCs was measured using the Cell Counting Kit-8 assay to determine cell cycle and cell count. Expression levels of the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKt) pathway proteins and cyclin D1 were determined by western blot analysis. Next, hBMSCs were successfully cultured and identified as multipotent mesenchymal stem cells. We found that LIPUS could promote the proliferation of hBMSCs when the exposure time was 5 or 10 minutes per day. Furthermore, 50 or 60 mW/cm2 LIPUS had a more significant effect on cell proliferation, but if cells were irradiated by LIPUS for 20 minutes once a day, an intensity of at least 50 mW/cm2 could markedly inhibit cell growth. Cell cycle analysis demonstrated that LIPUS treatment drives cells to enter S and G2/M phases from the G0/G1 phase. LIPUS exposure increased phosphorylation of PI3K/AKt and significantly upregulated expression of cyclin D1. However, these effects were inhibited when cells were treated with PI3K inhibitor (LY294002), which in turn reduced LIPUS-mediated proliferation of hBMSCs. These results suggest that LIPUS exposure may be involved in the proliferation of hBMSCs via activation of the PI3K/AKt signaling pathway and high expression of cyclin D1, and the intensity of 50 or 60 mW/cm2 and exposure time of 5 minutes were determined to be the optimal parameters for LIPUS exposure.
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Affiliation(s)
- Shucai Xie
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Xili Jiang
- Department of Radiology, The Second People's Hospital of Hunan Province/Brain Hospital of Hunan Province, Changsha, Hunan, People's Republic of China
| | - Rui Wang
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Shaowei Xie
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Yongyong Hua
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Shuai Zhou
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Yijun Yang
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
| | - Jianquan Zhang
- Department of Hepatobiliary Surgery, Haikou People's Hospital/Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, Hainan, People's Republic of China
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17
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Costantini E, Sinjari B, D'Angelo C, Murmura G, Reale M, Caputi S. Human Gingival Fibroblasts Exposed to Extremely Low-Frequency Electromagnetic Fields: In Vitro Model of Wound-Healing Improvement. Int J Mol Sci 2019; 20:ijms20092108. [PMID: 31035654 PMCID: PMC6540598 DOI: 10.3390/ijms20092108] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/23/2019] [Accepted: 04/25/2019] [Indexed: 01/24/2023] Open
Abstract
Several clinical studies have suggested the impact of sinusoidal and pulsed electromagnetic fields in quickening wound repair processes and tissue regeneration. The clinical use of extremely low-frequency electromagnetic fields could represent a novel frontier in tissue repair and oral health, with an interesting clinical perspective. The present study aimed to evaluate the effect of an extremely low-frequency sinusoidal electromagnetic field (SEMF) and an extremely low-frequency pulsed electromagnetic field (PEMF) with flux densities of 1 mT on a model of oral healing process using gingival fibroblasts. An in vitro mechanical injury was produced to evaluate wound healing, migration, viability, metabolism, and the expression of selected cytokines and protease genes in fibroblasts exposed to or not exposed to the SEMF and the PEMF. Interleukin 6 (IL-6), transforming growth factor beta 1 (TGF-β), metalloproteinase 2 (MMP-2), monocyte chemoattractant protein 1 (MCP-1), inducible nitric oxide synthase (iNOS), and heme oxygenase 1 (HO-1) are involved in wound healing and tissue regeneration, favoring fibroblast proliferation, chemotaxis, and activation. Our results show that the exposure to each type of electromagnetic field increases the early expression of IL-6, TGF-β, and iNOS, driving a shift from an inflammatory to a proliferative phase of wound repair. Additionally, a later induction of MMP-2, MCP-1, and HO-1 was observed after electromagnetic field exposure, which quickened the wound-healing process. Moreover, electromagnetic field exposure influenced the proliferation, migration, and metabolism of human gingival fibroblasts compared to sham-exposed cells. This study suggests that exposure to SEMF and PEMF could be an interesting new non-invasive treatment option for wound healing. However, additional studies are needed to elucidate the best exposure conditions to provide the desired in vivo treatment efficacy.
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Affiliation(s)
- Erica Costantini
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Bruna Sinjari
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Chiara D'Angelo
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Giovanna Murmura
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Marcella Reale
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
| | - Sergio Caputi
- Department of Medical, Oral and Biotechnological Science, University "G. d'Annunzio" Chieti-Pescara, 66100 Chieti, Italy.
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18
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Galli C, Pedrazzi G, Guizzardi S. The cellular effects of Pulsed Electromagnetic Fields on osteoblasts: A review. Bioelectromagnetics 2019; 40:211-233. [PMID: 30908726 DOI: 10.1002/bem.22187] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 03/08/2019] [Indexed: 12/12/2022]
Abstract
Electromagnetic fields (EMFs) have long been known to interact with living organisms and their cells and to bear the potential for therapeutic use. Among the most extensively investigated applications, the use of Pulsed EMFs (PEMFs) has proven effective to ameliorate bone healing in several studies, although the evidence is still inconclusive. This is due in part to our still-poor understanding of the mechanisms by which PEMFs act on cells and affect their functions and to an ongoing lack of consensus on the most effective parameters for specific clinical applications. The present review has compared in vitro studies on PEMFs on different osteoblast models, which elucidate potential mechanisms of action for PEMFs, up to the most recent insights into the role of primary cilia, and highlight the critical issues underlying at least some of the inconsistent results in the available literature. Bioelectromagnetics. 2019;9999:XX-XX. © 2019 Bioelectromagnetics Society.
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Affiliation(s)
- Carlo Galli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Giuseppe Pedrazzi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Stefano Guizzardi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
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19
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Azadian E, Arjmand B, Khodaii Z, Ardeshirylajimi A. A comprehensive overview on utilizing electromagnetic fields in bone regenerative medicine. Electromagn Biol Med 2019; 38:1-20. [PMID: 30661411 DOI: 10.1080/15368378.2019.1567527] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Stem cells are one of the most important sources to develope a new strategy for repairing bone lesions through tissue engineering. Osteogenic differentiation of stem cells can be affected by various factors such as biological, chemical, physiological, and physical ones. The application of ELF-EMFs has been the subject of many research in bone tissue engineering and evidence suggests that this exogenous physical stimulus can promote osteogenic differentiation in several types of cells. The purpose of this paper is to review the current knowledge on the effects of EMFs on stem cells in bone tissue engineering studies. We recapitulated and analyzed 39 articles that were focused on the application of EMFs for bone tissue engineering purposes. We tabulated scattered information from these articles for easy use and tried to provide an overview of conducted research and identify the knowledge gaps in the field.
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Affiliation(s)
- Esmaeel Azadian
- a Urogenital Stem Cell Research Center , Shahid Beheshti University of Medical Sciences , Tehran , Iran.,b Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine , Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Bahar Arjmand
- a Urogenital Stem Cell Research Center , Shahid Beheshti University of Medical Sciences , Tehran , Iran.,b Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine , Shahid Beheshti University of Medical Sciences , Tehran , Iran
| | - Zohreh Khodaii
- c Dietary supplements and Probiotics research center , Alborz University of Medical Sciences , Karaj , Iran.,d Department of Biochemistry, Genetics and Nutrition, Faculty of Medicine , Alborz University of Medical Sciences , Karaj , Iran
| | - Abdolreza Ardeshirylajimi
- a Urogenital Stem Cell Research Center , Shahid Beheshti University of Medical Sciences , Tehran , Iran.,b Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine , Shahid Beheshti University of Medical Sciences , Tehran , Iran
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20
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The Use of Pulsed Electromagnetic Fields to Promote Bone Responses to Biomaterials In Vitro and In Vivo. Int J Biomater 2018; 2018:8935750. [PMID: 30254677 PMCID: PMC6140132 DOI: 10.1155/2018/8935750] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/09/2018] [Indexed: 12/14/2022] Open
Abstract
Implantable biomaterials are extensively used to promote bone regeneration or support endosseous prosthesis in orthopedics and dentistry. Their use, however, would benefit from additional strategies to improve bone responses. Pulsed Electromagnetic Fields (PEMFs) have long been known to act on osteoblasts and bone, affecting their metabolism, in spite of our poor understanding of the underlying mechanisms. Hence, we have the hypothesis that PEMFs may also ameliorate cell responses to biomaterials, improving their growth, differentiation, and the expression of a mature phenotype and therefore increasing the tissue integration of the implanted devices and their clinical success. A broad range of settings used for PEMFs stimulation still represents a hurdle to better define treatment protocols and extensive research is needed to overcome this issue. The present review includes studies that investigated the effects of PEMFs on the response of bone cells to different classes of biomaterials and the reports that focused on in vivo investigations of biomaterials implanted in bone.
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21
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Extremely low frequency electromagnetic fields promote mesenchymal stem cell migration by increasing intracellular Ca 2+ and activating the FAK/Rho GTPases signaling pathways in vitro. Stem Cell Res Ther 2018; 9:143. [PMID: 29784011 PMCID: PMC5963142 DOI: 10.1186/s13287-018-0883-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/03/2018] [Accepted: 04/20/2018] [Indexed: 12/11/2022] Open
Abstract
Background The ability of mesenchymal stem cells (MSCs) to migrate to the desired tissues or lesions is crucial for stem cell-based regenerative medicine and tissue engineering. Optimal therapeutics for promoting MSC migration are expected to become an effective means for tissue regeneration. Electromagnetic fields (EMF), as a noninvasive therapy, can cause a lot of biological changes in MSCs. However, whether EMF can promote MSC migration has not yet been reported. Methods We evaluated the effects of EMF on cell migration in human bone marrow-derived MSCs. With the use of Helmholtz coils and an EMF stimulator, 7.5, 15, 30, 50, and 70 Hz/1 mT EMF was generated. Additionally, we employed the l-type calcium channel blocker verapamil and the focal adhesion kinase (FAK) inhibitor PF-573228 to investigate the role of intracellular calcium content, cell adhesion proteins, and the Rho GTPase protein family (RhoA, Rac1, and Cdc42) in EMF-mediated MSC migration. Cell adhesion proteins (FAK, talin, and vinculin) were detected by Western blot analysis. The Rho GTPase protein family activities were assessed by G-LISA, and F-actin levels, which reflect actin cytoskeletal organization, were detected using immunofluorescence. Results All the 7.5, 15, 30, 50, and 70 Hz/1 mT EMF promoted MSC migration. EMF increased MSC migration in an intracellular calcium-dependent manner. Notably, EMF-enhanced migration was mediated by FAK activation, which was critical for the formation of focal contacts, as evidenced by increased talin and vinculin expression. Moreover, RhoA, Rac1, and Cdc42 were activated by FAK to increase cytoskeletal organization, thus promoting cell contraction. Conclusions EMF promoted MSC migration by increasing intracellular calcium and activating the FAK/Rho GTPase signaling pathways. This study provides insights into the mechanisms of MSC migration and will enable the rational design of targeted therapies to improve MSC engraftment. Electronic supplementary material The online version of this article (10.1186/s13287-018-0883-4) contains supplementary material, which is available to authorized users.
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22
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Unraveling the mechanistic effects of electric field stimulation towards directing stem cell fate and function: A tissue engineering perspective. Biomaterials 2017; 150:60-86. [PMID: 29032331 DOI: 10.1016/j.biomaterials.2017.10.003] [Citation(s) in RCA: 194] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/27/2017] [Accepted: 10/02/2017] [Indexed: 02/06/2023]
Abstract
Electric field (EF) stimulation can play a vital role in eliciting appropriate stem cell response. Such an approach is recently being established to guide stem cell differentiation through osteogenesis/neurogenesis/cardiomyogenesis. Despite significant recent efforts, the biophysical mechanisms by which stem cells sense, interpret and transform electrical cues into biochemical and biological signals still remain unclear. The present review critically analyses the variety of EF stimulation approaches that can be employed to evoke appropriate stem cell response and also makes an attempt to summarize the underlying concepts of this notion, placing special emphasis on stem cell based tissue engineering and regenerative medicine. This review also discusses the major signaling pathways and cellular responses that are elicited by electric stimulation, including the participation of reactive oxygen species and heat shock proteins, modulation of intracellular calcium ion concentration, ATP production and numerous other events involving the clustering or reassembling of cell surface receptors, cytoskeletal remodeling and so on. The specific advantages of using external electric stimulation in different modalities to regulate stem cell fate processes are highlighted with explicit examples, in vitro and in vivo.
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23
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Bagheri L, Pellati A, Rizzo P, Aquila G, Massari L, De Mattei M, Ongaro A. Notch pathway is active during osteogenic differentiation of human bone marrow mesenchymal stem cells induced by pulsed electromagnetic fields. J Tissue Eng Regen Med 2017; 12:304-315. [PMID: 28482141 DOI: 10.1002/term.2455] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 01/26/2017] [Accepted: 05/04/2017] [Indexed: 01/16/2023]
Abstract
Pulsed electromagnetic fields (PEMFs) have been used to treat bone diseases, particularly nonunion healing. Although it is known that PEMFs promote the osteogenic differentiation of human mesenchymal stem cells (hMSCs), to date PEMF molecular mechanisms remain not clearly elucidated. The Notch signalling is a highly conserved pathway that regulates cell fate decisions and skeletal development. The aim of this study was to investigate if the known PEMF-induced osteogenic effects may involve the modulation of the Notch pathway. To this purpose, during in vitro osteogenic differentiation of bone marrow hMSCs in the absence and in the presence of PEMFs, osteogenic markers (alkaline phosphatase activity, osteocalcin and matrix mineralization), the messenger ribonucleic acid expression of osteogenic transcription factors (Runx2, Dlx5, Osterix) as well as of Notch receptors (Notch1-4), their ligands (Jagged1, Dll1 and Dll4) and nuclear target genes (Hes1, Hes5, Hey1, Hey2) were investigated. PEMFs stimulated all osteogenic markers and increased the expression of Notch4, Dll4, Hey1, Hes1 and Hes5 in osteogenic medium compared to control. In the presence of DAPT and SAHM1, used as Notch pathway inhibitors, the expression of the osteogenic markers, including Runx2, Dlx5, Osterix, as well as Hes1 and Hes5 were significantly inhibited, both in unexposed and PEMF-exposed hMSCs. These results suggest that activation of Notch pathway is required for PEMFs-stimulated osteogenic differentiation. These new findings may be useful to improve autologous cell-based regeneration of bone defects in orthopaedics.
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Affiliation(s)
- Leila Bagheri
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Agnese Pellati
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Paola Rizzo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Giorgio Aquila
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy.,Maria Cecilia Hospital, GVM Care & Research, E.S. Health Science Foundation, Cotignola, Italy
| | - Leo Massari
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Monica De Mattei
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Alessia Ongaro
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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24
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Liu C, Zhang Y, Fu T, Liu Y, Wei S, Yang Y, Zhao D, Zhao W, Song M, Tang X, Wu H. Effects of electromagnetic fields on bone loss in hyperthyroidism rat model. Bioelectromagnetics 2016; 38:137-150. [PMID: 27973686 DOI: 10.1002/bem.22022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/22/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Chaoxu Liu
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Yingchi Zhang
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Tao Fu
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Yang Liu
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Sheng Wei
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Yong Yang
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Dongming Zhao
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | | | - Mingyu Song
- Department of Gynaecology and Obstetrics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Xiangyu Tang
- Department of Radiology; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - Hua Wu
- Department of Orthopaedics; Tongji Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
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25
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Bique AM, Kaivosoja E, Mikkonen M, Paulasto-Kröckel M. Choice of osteoblast model critical for studying the effects of electromagnetic stimulation on osteogenesis in vitro. Electromagn Biol Med 2016; 35:353-64. [PMID: 27355896 DOI: 10.3109/15368378.2016.1138124] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The clinical benefits of electromagnetic field (EMF) therapy in enhancing osteogenesis have been acknowledged for decades, but agreement regarding the underlying mechanisms continues to be sought. Studies have shown EMFs to promote osteoblast-like cell proliferation, or contrarily, to induce differentiation and enhance mineralization. Typically these disparities have been attributed to methodological differences. The present paper argues the possibility that the chosen osteoblast model impacts stimulation outcome. Phenotypically immature cells, particularly at low seeding densities, appear to be prone to EMF-amplified proliferation. Conversely, mature cells at higher densities seem to be predisposed to earlier onset differentiation and mineralization. This suggests that EMFs augment ongoing processes in cell populations. To test this hypothesis, mature SaOS-2 cells and immature MC3T3-E1 cells at various densities, with or without osteo-induction, were exposed to sinusoidal 50 Hz EMF. The exposure stimulated the proliferation of MC3T3-E1 and inhibited the proliferation of SaOS-2 cells. Baseline alkaline phosphatase (ALP) expression of SaOS-2 cells was high and rapidly further increased with EMF exposure, whereas ALP effects in MC3T3-E1 cells were not seen until the second week. Thus both cell types responded differently to EMF stimulation, corroborating the hypothesis that the phenotypic maturity and culture stage of cells influence stimulation outcome.
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Affiliation(s)
- Anna-Maria Bique
- a Aalto University Department of Electrical Engineering and Automation , School of Electrical Engineering , Espoo , Finland
| | - Emilia Kaivosoja
- a Aalto University Department of Electrical Engineering and Automation , School of Electrical Engineering , Espoo , Finland
| | - Marko Mikkonen
- a Aalto University Department of Electrical Engineering and Automation , School of Electrical Engineering , Espoo , Finland
| | - Mervi Paulasto-Kröckel
- a Aalto University Department of Electrical Engineering and Automation , School of Electrical Engineering , Espoo , Finland
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Wang W, Li W, Song M, Wei S, Liu C, Yang Y, Wu H. Effects of electromagnetic fields on the metabolism of lubricin of rat chondrocytes. Connect Tissue Res 2015; 57:152-60. [PMID: 26631347 DOI: 10.3109/03008207.2015.1121249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Electromagnetic fields (EMFs) can improve pain, stiffness and physical function in osteoarthritis (OA) patients and have been proposed for the treatment of OA. However, the precise mechanisms involved in this process are still not fully understood. In the present study, we investigated the effects of exposure for different durations with 75 Hz, 2.3 mT sinusoidal EMFs (SEMFs) on the metabolism of lubricin of rat chondrocytes cultured in vitro. Our results showed that SEMFs exposure promoted lubricin synthesis in a time-dependent manner, and the expression of transforming growth factor (TGF)-β1 was also enhanced after SEMFs treatment. The up-regulation effect of the expression of lubricin under SEMF was partly reduced by SB431542, an inhibitor of TGF-RI kinase. The Smad pathway was also investigated in our study. Smad2 synthesis was higher in EMF-exposed condition than in controls, whereas no effects were observed on inhibitory Smads (Smad6 and Smad7) production. Altogether, these data suggest that SEMF exposure can promote lubricin synthesis of rat chondrocytes in a time-dependent manner and that the TGF-β/Smads signaling pathway plays a partial role.
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Affiliation(s)
- Wei Wang
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China.,b Department of Orthopedics, WuHan Orthopedics Hospital/Puai Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Wenkai Li
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Mingyu Song
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Sheng Wei
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Chaoxu Liu
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Yong Yang
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Hua Wu
- a Department of Orthopedics, Tongji Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
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Yan JL, Zhou J, Ma HP, Ma XN, Gao YH, Shi WG, Fang QQ, Ren Q, Xian CJ, Chen KM. Pulsed electromagnetic fields promote osteoblast mineralization and maturation needing the existence of primary cilia. Mol Cell Endocrinol 2015; 404:132-40. [PMID: 25661534 DOI: 10.1016/j.mce.2015.01.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/08/2015] [Accepted: 01/20/2015] [Indexed: 11/30/2022]
Abstract
Although pulsed electromagnetic fields (PEMFs) have been approved as a therapy for osteoporosis, action mechanisms and optimal parameters are elusive. To determine the optimal intensity, exposure effects of 50 Hz PEMFs of 0.6-3.6 mT (0.6 interval at 90 min/day) were investigated on proliferation and osteogenic differentiation of cultured calvarial osteoblasts. All intensity groups stimulated proliferation significantly with the highest effect at 0.6 mT. The 0.6 mT group also obtained the optimal osteogenic effect as demonstrated by the highest ALP activity, ALP(+) CFU-f colony formation, nodule mineralization, and expression of COL-1 and BMP-2. To verify our hypothesis that the primary cilia are the cellular sensors for PEMFs, osteoblasts were also transfected with IFT88 siRNA or scrambled control, and osteogenesis-promoting effects of 0.6 mT PEMFs were found abrogated when primary cilia were inhibited by IFT88 siRNA. Thus primary cilia of osteoblasts play an indispensable role in mediating PEMF osteogenic effect in vitro.
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Affiliation(s)
- Juan-Li Yan
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Jian Zhou
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Hui-Ping Ma
- Department of Pharmacy, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Xiao-Ni Ma
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Yu-Hai Gao
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Wen-Gui Shi
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Qing-Qing Fang
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Qian Ren
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China
| | - Cory J Xian
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5001, Australia
| | - Ke-Ming Chen
- Institute of Orthopaedics,Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou 730050, China.
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Zhou J, Ma XN, Gao YH, Yan JL, Shi WG, Xian CJ, Chen KM. Sinusoidal electromagnetic fields promote bone formation and inhibit bone resorption in rat femoral tissuesin vitro. Electromagn Biol Med 2014; 35:75-83. [DOI: 10.3109/15368378.2014.971958] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Tian H, Guo M, Zhuang Y, Chu J, Zhang S. Enhanced proliferation of bone marrow mesenchymal stem cells by co-culture with TM4 mouse Sertoli cells: involvement of the EGF/PI3K/AKT pathway. Mol Cell Biochem 2014; 393:155-64. [PMID: 24748323 DOI: 10.1007/s11010-014-2055-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 04/03/2014] [Indexed: 01/23/2023]
Abstract
Bone marrow mesenchymal stem cells (BM-MSCs) are considered as a promising option in the field of regenerative medicine and tissue engineering. However, little is known about how TM4 mouse Sertoli cells, which are known to enhance stem cells proliferation in co-culture, may influence the proliferation of BM-MSCs and which signaling pathways are involved in. To address these questions, an in vitro transwell system was used. We found that TM4 cells could produce soluble factors which enhanced the growth of BM-MSCs without inhibiting the multipotency. Furthermore, cell cycle analysis showed that co-culture with the TM4 cells accelerated the progress of BM-MSCs from the G1 to the S phase. The expression of the phospho-akt, mdm2, as well as pho-CDC2, and cyclin D1 were markedly upregulated in co-cultured BM-MSCs. The observed promoting effect was significantly inhibited by the administration of the PI3K/AKT inhibitor, LY294002. Among the various growth factors produced by TM4 cells, the epithelial growth factor (EGF) stimulated the proliferation of the BM-MSCs more significantly compared with the other growth factors examined in this study. Neutralization of EGF via a blocking antibody significantly limited the promoting growth effect in BM-MSCs. These results suggest that TM4 cells provide a favorable in vitro environment for BM-MSCs growth and imply the involvement of the EGF/PI3K/AKT pathway.
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Affiliation(s)
- Huan Tian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, P.O. Box 329, 130 Meilong Rd, Shanghai, 200237, P.R. China
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