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Liu H, Ding S, Lin X, Wang S, Wang Y, Feng Z, Song J. Bone Fracture Healing under the Intervention of a Stretchable Ultrasound Array. ACS NANO 2024. [PMID: 39008625 DOI: 10.1021/acsnano.4c02426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Ultrasound treatment has been recognized as an effective and noninvasive approach to promote fracture healing. However, traditional rigid ultrasound probe is bulky, requiring cumbersome manual operations and inducing unfavorable side effects when functioning, which precludes the wide application of ultrasound in bone fracture healing. Here, we report a stretchable ultrasound array for bone fracture healing, which features high-performance 1-3 piezoelectric composites as transducers, stretchable multilayered serpentine metal films in a bridge-island pattern as electrical interconnects, soft elastomeric membranes as encapsulations, and polydimethylsiloxane (PDMS) with low curing agent ratio as adhesive layers. The resulting ultrasound array offers the benefits of large stretchability for easy skin integration and effective affecting region for simple skin alignment with good electromechanical performance. Experimental investigations of the stretchable ultrasound array on the delayed union model in femoral shafts of rats show that the callus growth is more active in the second week of treatment and the fracture site is completely osseous healed in the sixth week of treatment. Various bone quality indicators (e.g., bone modulus, bone mineral density, bone tissue/total tissue volume, and trabecular bone thickness) could be enhanced with the intervention of a stretchable ultrasound array. Histological and immunohistochemical examinations indicate that ultrasound promotes osteoblast differentiation, bone formation, and remodeling by promoting the expression of osteopontin (OPN) and runt-related transcription factor 2 (RUNX2). This work provides an effective tool for bone fracture healing in a simple and convenient manner and creates engineering opportunities for applying ultrasound in medical applications.
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Affiliation(s)
- Hang Liu
- Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou 310027, China
| | - Shuchen Ding
- Center of Orthopedics, The 903rd Hospital of People's Liberation Army, Hangzhou Zhejiang 310003, China
| | - Xinyi Lin
- Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou 310027, China
| | - Suhao Wang
- Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou 310027, China
| | - Yue Wang
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Zhiyun Feng
- Spine Lab, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Jizhou Song
- Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou 310027, China
- Department of Rehabilitation Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
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2
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Shiraishi T, Sato K. Real-time imaging of intracellular deformation dynamics in vibrated adherent cell cultures. Biotechnol Bioeng 2024. [PMID: 38961714 DOI: 10.1002/bit.28793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 06/21/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024]
Abstract
Mechanical vibration has been shown to regulate cell proliferation and differentiation in vitro and in vivo. However, the mechanism of its cellular mechanotransduction remains unclear. Although the measurement of intracellular deformation dynamics under mechanical vibration could reveal more detailed mechanisms, corroborating experimental evidence is lacking due to technical difficulties. In this study, we aimed to propose a real-time imaging method of intracellular structure deformation dynamics in vibrated adherent cell cultures and investigate whether organelles such as actin filaments connected to a nucleus and the nucleus itself show deformation under horizontal mechanical vibration. The proposed real-time imaging was achieved by conducting vibration isolation and making design improvements to the experimental setup; using a high-speed and high-sensitivity camera with a global shutter; and reducing image blur using a stroboscope technique. Using our system, we successfully produced the first experimental report on the existence of the deformation of organelles connected to a nucleus and the nucleus itself under horizontal mechanical vibration. Furthermore, the intracellular deformation difference between HeLa and MC3T3-E1 cells measured under horizontal mechanical vibration agrees with the prediction of their intracellular structure based on the mechanical vibration theory. These results provide new findings about the cellular mechanotransduction mechanism under mechanical vibration.
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Affiliation(s)
- Toshihiko Shiraishi
- Division of Artificial Environment and Information, Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
| | - Katsuya Sato
- Division of Artificial Environment and Information, Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
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Setoguchi F, Sena K, Noguchi K. Low-Intensity Pulsed Ultrasound Promotes BMP9 Induced Osteoblastic Differentiation in Rat Dedifferentiated Fat Cells. Int J Stem Cells 2023; 16:406-414. [PMID: 37385636 PMCID: PMC10686803 DOI: 10.15283/ijsc23027] [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: 03/11/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 07/01/2023] Open
Abstract
Dedifferentiated fat cells (DFATs) isolated from mature adipocytes have a multilineage differentiation capacity similar to mesenchymal stem cells and are considered as promising source of cells for tissue engineering. Bone morphogenetic protein 9 (BMP9) and low-intensity pulsed ultrasound (LIPUS) have been reported to stimulate bone formation both in vitro and in vivo. However, the combined effect of BMP9 and LIPUS on osteoblastic differentiation of DFATs has not been studied. After preparing DFATs from mature adipose tissue from rats, DFATs were treated with different doses of BMP9 and/or LIPUS. The effects on osteoblastic differentiation were assessed by changes in alkaline phosphatase (ALP) activity, mineralization/calcium deposition, and expression of bone related genes; Runx2, osterix, osteopontin. No significant differences for ALP activity, mineralization deposition, as well as expression for bone related genes were observed by LIPUS treatment alone while treatment with BMP9 induced osteoblastic differentiation of DFATs in a dose dependent manner. Further, co-treatment with BMP9 and LIPUS significantly increased osteoblastic differentiation of DFATs compared to those treated with BMP9 alone. In addition, upregulation for BMP9-receptor genes was observed by LIPUS treatment. Indomethacin, an inhibitor of prostaglandin synthesis, significantly inhibited the synergistic effect of BMP9 and LIPUS co-stimulation on osteoblastic differentiation of DFATs. LIPUS promotes BMP9 induced osteoblastic differentiation of DFATs in vitro and prostaglandins may be involved in this mechanism.
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Affiliation(s)
- Fumiaki Setoguchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Kotaro Sena
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
- Division of Preventive Dentistry, Department of Community Social Dentistry, Graduate School of Dentistry, Tohoku University, Miyagi, Japan
| | - Kazuyuki Noguchi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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da Silva ANG, de Oliveira JRS, Madureira ÁNDM, Lima WA, Lima VLDM. Biochemical and Physiological Events Involved in Responses to the Ultrasound Used in Physiotherapy: A Review. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:2417-2429. [PMID: 36115728 DOI: 10.1016/j.ultrasmedbio.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Therapeutic ultrasound (TUS) is the ultrasound modality widely used in physical therapy for the treatment of acute and chronic injuries of various biological tissues. Its thermal and mechanical effects modify the permeability of the plasma membrane, the flow of ions and molecules and cell signaling and, in this way, promote the cascade of physiological events that culminate in the repair of injuries. This article is a review of the biochemical and physiological effects of TUS with parameters commonly used by physical therapists. Integrins can translate the mechanical signal of the TUS into a cellular biochemical signal for protein synthesis and modification of the active site of enzymes, so cell function and metabolism are modified. TUS also alters the permeability of the plasma membrane, allowing the influx of ions and molecules that modulate the cellular electrochemical signaling pathways. With biochemical and electrochemical signals tampered with, the cellular response to damage is then modified or enhanced. Greater release of pro-inflammatory factors, cytokines and growth factors, increased blood flow and activation of protein kinases also seem to be involved in the therapeutic response of TUS. Although a vast number of publications describe the mechanisms by which TUS can interact with the biological system, little is known about the metabolic possibilities of TUS because of the lack of standardization in its application.
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Affiliation(s)
- Ayala Nathaly Gomes da Silva
- Laboratório de Lipídios e Aplicaçães de Biomoléculas em Doenças Prevalentes e Negligenciadas, Universidade Federal de Pernambuco, Recife, Brazil
| | - João Ricardhis Saturnino de Oliveira
- Laboratório de Lipídios e Aplicaçães de Biomoléculas em Doenças Prevalentes e Negligenciadas, Universidade Federal de Pernambuco, Recife, Brazil
| | - Álvaro Nóbrega de Melo Madureira
- Laboratório de Lipídios e Aplicaçães de Biomoléculas em Doenças Prevalentes e Negligenciadas, Universidade Federal de Pernambuco, Recife, Brazil
| | - Wildberg Alencar Lima
- Laboratório de Lipídios e Aplicaçães de Biomoléculas em Doenças Prevalentes e Negligenciadas, Universidade Federal de Pernambuco, Recife, Brazil
| | - Vera Lúcia de Menezes Lima
- Laboratório de Lipídios e Aplicaçães de Biomoléculas em Doenças Prevalentes e Negligenciadas, Universidade Federal de Pernambuco, Recife, Brazil.
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Gupta D, Savva J, Li X, Chandler JH, Shelton RM, Scheven BA, Mulvana H, Valdastri P, Lucas M, Walmsley AD. Traditional Multiwell Plates and Petri Dishes Limit the Evaluation of the Effects of Ultrasound on Cells In Vitro. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:1745-1761. [PMID: 35760602 DOI: 10.1016/j.ultrasmedbio.2022.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Ultrasound accelerates healing in fractured bone; however, the mechanisms responsible are poorly understood. Experimental setups and ultrasound exposures vary or are not adequately characterized across studies, resulting in inter-study variation and difficulty in concluding biological effects. This study investigated experimental variability introduced through the cell culture platform used. Continuous wave ultrasound (45 kHz; 10, 25 or 75 mW/cm2, 5 min/d) was applied, using a Duoson device, to Saos-2 cells seeded in multiwell plates or Petri dishes. Pressure field and vibration quantification and finite-element modelling suggested formation of complex interference patterns, resulting in localized displacement and velocity gradients, more pronounced in multiwell plates. Cell experiments revealed lower metabolic activities in both culture platforms at higher ultrasound intensities and absence of mineralization in certain regions of multiwell plates but not in Petri dishes. Thus, the same transducer produced variable results in different cell culture platforms. Analysis on Petri dishes further revealed that higher intensities reduced vinculin expression and distorted cell morphology, while causing mitochondrial and endoplasmic reticulum damage and accumulation of cells in sub-G1 phase, leading to cell death. More defined experimental setups and reproducible ultrasound exposure systems are required to study the real effect of ultrasound on cells for development of effective ultrasound-based therapies not just limited to bone repair and regeneration.
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Affiliation(s)
- Dhanak Gupta
- School of Dentistry, University of Birmingham, Birmingham, UK.
| | - Jill Savva
- Centre for Medical & Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, UK
| | - Xuan Li
- Centre for Medical & Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, UK
| | - James H Chandler
- Science and Technology of Robotics in Medicine (STORM) Laboratory UK, School of Electronic and Electrical Engineering, University of Leeds, Leeds, UK
| | | | - Ben A Scheven
- School of Dentistry, University of Birmingham, Birmingham, UK
| | - Helen Mulvana
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | - Pietro Valdastri
- Science and Technology of Robotics in Medicine (STORM) Laboratory UK, School of Electronic and Electrical Engineering, University of Leeds, Leeds, UK
| | - Margaret Lucas
- Centre for Medical & Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, UK
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Ma C, Du T, Niu X, Fan Y. Biomechanics and mechanobiology of the bone matrix. Bone Res 2022; 10:59. [PMID: 36042209 PMCID: PMC9427992 DOI: 10.1038/s41413-022-00223-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 05/13/2022] [Accepted: 05/27/2022] [Indexed: 11/23/2022] Open
Abstract
The bone matrix plays an indispensable role in the human body, and its unique biomechanical and mechanobiological properties have received much attention. The bone matrix has unique mechanical anisotropy and exhibits both strong toughness and high strength. These mechanical properties are closely associated with human life activities and correspond to the function of bone in the human body. None of the mechanical properties exhibited by the bone matrix is independent of its composition and structure. Studies on the biomechanics of the bone matrix can provide a reference for the preparation of more applicable bone substitute implants, bone biomimetic materials and scaffolds for bone tissue repair in humans, as well as for biomimetic applications in other fields. In providing mechanical support to the human body, bone is constantly exposed to mechanical stimuli. Through the study of the mechanobiology of the bone matrix, the response mechanism of the bone matrix to its surrounding mechanical environment can be elucidated and used for the health maintenance of bone tissue and defect regeneration. This paper summarizes the biomechanical properties of the bone matrix and their biological significance, discusses the compositional and structural basis by which the bone matrix is capable of exhibiting these mechanical properties, and studies the effects of mechanical stimuli, especially fluid shear stress, on the components of the bone matrix, cells and their interactions. The problems that occur with regard to the biomechanics and mechanobiology of the bone matrix and the corresponding challenges that may need to be faced in the future are also described.
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Affiliation(s)
- Chunyang Ma
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Tianming Du
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China
| | - Xufeng Niu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,Research Institute of Beihang University in Shenzhen, Shenzhen, 518057, China.
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China. .,School of Engineering Medicine, Beihang University, Beijing, 100083, China.
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Palanisamy P, Alam M, Li S, Chow SKH, Zheng Y. Low-Intensity Pulsed Ultrasound Stimulation for Bone Fractures Healing: A Review. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2022; 41:547-563. [PMID: 33949710 PMCID: PMC9290611 DOI: 10.1002/jum.15738] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 04/04/2021] [Accepted: 04/18/2021] [Indexed: 05/17/2023]
Abstract
Low-intensity pulsed ultrasound (LIPUS) is a developing technology, which has been proven to improve fracture healing process with minimal thermal effects. This noninvasive treatment accelerates bone formation through various molecular, biological, and biomechanical interactions with tissues and cells. Although LIPUS treatment has shown beneficial effects on different bone fracture locations, only very few studies have examined its effects on deeper bones. This study provides an overview on therapeutic ultrasound for fractured bones, possible mechanisms of action, clinical evidences, current limitations, and its future prospects.
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Affiliation(s)
- Poornima Palanisamy
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongS.A.RChina
| | - Monzurul Alam
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongS.A.RChina
| | - Shuai Li
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongS.A.RChina
| | - Simon K. H. Chow
- Department of Orthopaedics and TraumatologyThe Chinese University of Hong KongHong KongS.A.RChina
| | - Yong‐Ping Zheng
- Department of Biomedical EngineeringThe Hong Kong Polytechnic UniversityHong KongS.A.RChina
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Hadaegh Y, Uludag H, Dederich D, El-Bialy TH. The effect of low intensity pulsed ultrasound on mandibular condylar growth in young adult rats. Bone Rep 2021; 15:101122. [PMID: 34527791 PMCID: PMC8433121 DOI: 10.1016/j.bonr.2021.101122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/19/2021] [Accepted: 08/25/2021] [Indexed: 11/30/2022] Open
Abstract
There is a need for more effective methods to enhance mandibular growth in young adults with mandibular deficiency. Previous studies suggest that low intensity pulsed ultrasound (LIPUS) can enhance mandibular growth in growing individuals. This study aimed to evaluate the potential growth changes of the mandible following 4-week LIPUS application in young adult rats. Nineteen ≈120-day-old female rats were allocated to experimental (n = 10) and control (n = 9) groups. The animals in the experimental group were treated with LIPUS to their temporomandibular joints (TMJs) bilaterally, 20 min each day for 28 consecutive days. Animals were then euthanized; gross morphological evaluation was performed on 2D photographs and 3D virtual models of hemi-mandibles, and microstructural assessment was done for the mandibular condyle (MC). Evaluation of mineralization and microarchitecture properties of subchondral cancellous bone was performed by micro-computed tomography (μCT) scanning. Qualitative and histomorphometric analysis was done on condylar cartilage and subchondral bone following Alcian Blue/PAS and Goldner's Trichrome staining. Vital flourochrome (calcein green) labeling was also utilized to determine the amount of endochondral bone growth. Gross morphological evaluations showed a slight statistically non-significant increase especially in the main condylar growth direction in the LIPUS group. Moreover, 3D evaluation depicted an enhanced periosteal bone apposition at the site of LIPUS application. Microstructural analysis revealed that LIPUS stimulates both chondrogenesis and osteogenesis and enhances endochondral bone formation in young adult rat MC. Furthermore, the effect of LIPUS on osteogenic cells of subchondral cancellous bone was notable. To conclude, LIPUS can enhance young adult rats' MC residual growth potential.
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Affiliation(s)
- Yasamin Hadaegh
- School of Dentistry, University of Alberta, Edmonton, Canada
| | - Hasan Uludag
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada
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Lyu W, Ma Y, Chen S, Li H, Wang P, Chen Y, Feng X. Flexible Ultrasonic Patch for Accelerating Chronic Wound Healing. Adv Healthc Mater 2021; 10:e2100785. [PMID: 34212532 DOI: 10.1002/adhm.202100785] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/28/2021] [Indexed: 12/20/2022]
Abstract
Ultrasound treatment is an effective method for accelerating chronic wound healing. However, it is not widely used because traditional ultrasonic probes cannot be conformal to the wound surface, which leads to limitations of use and unstable treatment effects. In addition, the use of liquid coupling agent increases the chance of wound infection. A strategy is proposed to design and fabricate a flexible ultrasonic patch for treating chronic wounds effectively. The piezoelectric ceramic in the patch is discretized into several linearly arranged units, which are integrated on a flexible circuit substrate. A thin hydrogel patch is used as both encapsulation and coupling layer to avoid wound infection and ensure the penetration of ultrasound. The ultrasonic patch is soft, light, and can completely conform to the treatment area. Bending of the patch focuses the sound beams on the center of the bending circle, which achieves control of the target treatment area. Ultrasound treatment experiments are carried out on some type-II diabetic rats. Immunohistochemical (IHC) results indicate that ultrasound accelerates wound healing by activating Rac1 in both dermal and epidermal layers. Treatment results show that wound treated with the ultrasound heals faster than wounds without. The healing time is shortened by ≈40%.
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Affiliation(s)
- Wenhan Lyu
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
| | - Yinji Ma
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
| | - Siyu Chen
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
| | - Haibo Li
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
| | - Peng Wang
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
| | - Ying Chen
- Institute of Flexible Electronics Technology THU Jiaxing 314000 China
- Qiantang Science and Technology Innovation Center Hangzhou 310016 China
| | - Xue Feng
- AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China
- Center for Flexible Electronics Technology Tsinghua University Beijing 100084 China
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Biostimulatory Effects of Low-Intensity Pulsed Ultrasound on Rate of Orthodontic Tooth Movement and Associated Pain, Applied at 3-Week Intervals: A Split-Mouth Study. Pain Res Manag 2021; 2021:6624723. [PMID: 34035871 PMCID: PMC8118727 DOI: 10.1155/2021/6624723] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/12/2021] [Accepted: 04/26/2021] [Indexed: 11/17/2022]
Abstract
Objective Low-intensity pulsed ultrasound (LIPUS) is a noninvasive modality to stimulate bone remodeling (BR) and the healing of hard and soft tissues. This research evaluates the biostimulatory effect of LIPUS on the rate of orthodontic tooth movement (OTM) and associated pain, when applied at 3-week intervals. Methods Twenty-two patients (11 males and 11 females; mean age 19.18 ± 2.00 years) having Angle's Class II division 1 malocclusion needing bilateral extractions of maxillary first bicuspids were recruited for this split-mouth randomized clinical trial. After the initial stage of alignment and leveling with contemporary edgewise MBT (McLaughlin-Bennett-Trevisi) prescription brackets (Ortho Organizers, Carlsbad, Calif) of 22 mil, followed by extractions of premolars bilaterally, 6 mm nickel-titanium spring was used to retract the canines separately by applying 150 g force on 0.019 × 0.025-in stainless steel working archwires. LIPUS (1.1 MHz frequency and 30 mW/cm2 intensity output) was applied for 20 minutes extraorally and reapplied after 3 weeks for 2 more successive visits over the root of maxillary canine on the experimental side whereas the other side was placebo. A numerical rating scale- (NRS-) based questionnaire was given to the patients on each visit to record their weekly pain experience. Impressions were also made at each visit before the application of LIPUS (T1, T2, and T3). Models were scanned with a CAD/CAM scanner (Planmeca, Helsinki, Finland). Mann-Whitney U test was applied for comparison of canine movement and pain intensity between both the groups. Results No significant difference in the rate of canine movement was found among the experimental (0.90 mm ± 0.33 mm) and placebo groups (0.81 mm ± 0.32 mm). There was no difference in pain reduction between experimental and placebo groups (p > 0.05). Conclusion Single-dose application of LIPUS at 3-week intervals is ineffective in stimulating the OTM and reducing associated treatment pain.
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11
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Deering J, Presas A, Yu B, Valentin D, Heiss C, Bosbach WA, Grandfield K. Implant resonance and the mechanostat theory: Applications of therapeutic ultrasound for porous metallic scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 125:112070. [PMID: 33965119 DOI: 10.1016/j.msec.2021.112070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/28/2021] [Accepted: 03/07/2021] [Indexed: 11/18/2022]
Abstract
The development of treatment strategies for improving secondary stability at the bone-implant interface is a challenge. Porous implants are one solution for improving long-term implant stability, but the osteoconduction process of implants into the bone can be slow. Strain-driven osteogenesis from the mechanostat theory offers insight into pathways for post-operative treatment but mechanisms to deliver strain to the bone-implant interface need refinement. In this work, the use of therapeutic ultrasound is simulated to induce resonance into a porous implant structure. Local strains through the scaffold are measured by varying systemic variables such as damping ratio, applied vibrational force, primary bone-implant stability, and input frequency. At the natural frequency of the system with applied forces of 0.5 N and a damping ratio of 0.5%, roughly half of the nodes in the simulated environment exceed the microstrain threshold of 1000 με required for new bone formation. A high degree of sensitivity was noted upon changing input frequency, with minor sensitivities arising from damping ratio and applied vibrational force. These findings suggest that the application of therapeutic resonance to improve osseointegration of the bone-implant interface may be viable for applications including dental implants or segmental bone defects.
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Affiliation(s)
- Joseph Deering
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, Canada.
| | - Alexandre Presas
- Center for Industrial Diagnostics and Fluid Dynamics (CDIF), Polytechnic University of Catalonia (UPC), Barcelona, Spain
| | - Bosco Yu
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, Canada
| | - David Valentin
- Center for Industrial Diagnostics and Fluid Dynamics (CDIF), Polytechnic University of Catalonia (UPC), Barcelona, Spain
| | - Christian Heiss
- Experimental Trauma Surgery, Justus-Liebig-University of Giessen, Germany; Department of Trauma, Hand, and Reconstructive Surgery, University Hospital of Giessen, Germany
| | - Wolfram A Bosbach
- Experimental Trauma Surgery, Justus-Liebig-University of Giessen, Germany; Department of Trauma, Hand, and Reconstructive Surgery, University Hospital of Giessen, Germany
| | - Kathryn Grandfield
- Department of Materials Science and Engineering, McMaster University, Hamilton, ON, Canada; School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada.
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Tabuchi Y, Hasegawa H, Suzuki N, Furusawa Y, Hirano T, Nagaoka R, Hirayama J, Hoshi N, Mochizuki T. Genetic response to low‑intensity ultrasound on mouse ST2 bone marrow stromal cells. Mol Med Rep 2021; 23:173. [PMID: 33398373 PMCID: PMC7821223 DOI: 10.3892/mmr.2020.11812] [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: 09/13/2020] [Accepted: 10/27/2020] [Indexed: 11/05/2022] Open
Abstract
Although low‑intensity ultrasound (LIUS) is a clinically established procedure, the early cellular effect of LIUS on a genetic level has not yet been studied. The current study investigated the early response genes elicited by LIUS in bone marrow stromal cells (BMSCs) using global‑scale microarrays and computational gene expression analysis tools. Mouse ST2 BMSCs were treated with LIUS [ISATA, 25 mW/cm2 for 20 min with a frequency of 1.11 MHz in a pulsed‑wave mode (0.2‑s burst sine waves repeated at 1 kHz)], then cultured for 0.5, 1 and 3 h at 37˚C. The time course of changes in gene expression was evaluated using GeneChip® high‑density oligonucleotide microarrays and Ingenuity® Pathway Analysis tools. The results were verified by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR). A single exposure of LIUS did not affect cell morphology, cell growth or alkaline phosphatase activity. However, 61 upregulated and 103 downregulated genes were identified from 0.5 to 3 h after LIUS treatment. Two significant gene networks, labeled E and H, were identified from the upregulated genes, while a third network, labeled T, was identified from the downregulated genes. Gene network E or H containing the immediate‑early genes FBJ osteosarcoma oncogene and early growth response 1 or the heat shock proteins heat shock protein 1a/b was associated mainly with the biological functions of bone physiology and protein folding or apoptosis, respectively. Gene network T containing transcription factors fos‑like antigen 1 and serum response factor was also associated with the biological functions of the gene expression. RT‑qPCR indicated that the expression of several genes in the gene networks E and H were elevated in LIUS‑treated cells. LIUS was demonstrated to induce gene expression after short application in mouse ST2 BMSCs. The results of the present study provide a basis for the elucidation of the detailed molecular mechanisms underlying the cellular effects of LIUS.
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Affiliation(s)
- Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan
| | - Hideyuki Hasegawa
- Graduate School of Science and Engineering, University of Toyama, Toyama 930‑8555, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Ishikawa 927‑0553, Japan
| | - Yukihiro Furusawa
- Department of Liberal Arts and Sciences, Toyama Prefectural University, Toyama 939-0398, Japan
| | - Tetsushi Hirano
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama 930-0194, Japan
| | - Ryo Nagaoka
- Graduate School of Science and Engineering, University of Toyama, Toyama 930‑8555, Japan
| | - Jun Hirayama
- Department of Clinical Engineering, Faculty of Health Sciences, Komatsu University, Komatsu 923‑0961, Japan
| | - Nobuhiko Hoshi
- Laboratory of Animal Molecular Morphology, Department of Animal Science, Graduate School of Agricultural Science, Kobe University, Kobe 657‑8501, Japan
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Liao YH, Chen WS, Jee SH. The additive efficacy of therapeutic low-intensity pulsed ultrasound in the treatment of vitiligo: A randomized, left-right comparison clinical trial. Dermatol Ther 2020; 34:e14648. [PMID: 33296553 DOI: 10.1111/dth.14648] [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: 10/07/2020] [Revised: 11/19/2020] [Accepted: 12/01/2020] [Indexed: 11/28/2022]
Abstract
Repigmentation of vitiligo relies on the proliferation and migration of melanoblasts from hair follicles to the epidermis to replenish epidermal melanin. Our previous study has demonstrated low-intensity pulsed ultrasound (LIPUS) can stimulate melanoblast migration in vitro. We sought to evaluate the potential additive efficacy and safety of LIPUS for repigmentation of vitiligo. Twenty-seven adult patients with stable generalized vitiligo on the face or trunk were recruited in this randomized, open, left-right comparison study. In each patient, two symmetric lesional sites were randomly selected; one was assigned as the target lesion, which was treated with add-on LIPUS twice weekly for 24 weeks, and the other as the control lesion, which was administrated with sham sonification. The primary outcome was the difference of repigmentation degree between the target and control lesions at week 24, based on the 7-point physician global assessment score. At the end of study, 23 patients with vitiligo on the face (n = 10) or trunk (n = 13) completed the 24-week treatment course. Enhanced repigmentation for vitiligo receiving LIPUS as compared to sham sonification was observed in 38.5% (5/13) of the patients with truncal vitiligo, but none of those with facial vitiligo. Truncal vitiligo (P = .046) and higher intensity of LIPUS administered (P = .01) were statistically significantly associated with the effectiveness of additive LIPUS treatment. The LIPUS treatment was well-tolerated without remarkable adverse effects. This pilot study showed that LIPUS could provide therapeutic benefits and could be considered as a treatment adjunct for truncal vitiligo.
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Affiliation(s)
- Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Shiang Chen
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shiou-Hwa Jee
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Dermatology, Cathay General Hospital, Taipei, Taiwan
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Alshihah N, Alhadlaq A, El-Bialy T, Aldahmash A, Bello IO. The effect of low intensity pulsed ultrasound on dentoalveolar structures during orthodontic force application in diabetic ex-vivo model. Arch Oral Biol 2020; 119:104883. [PMID: 32932147 DOI: 10.1016/j.archoralbio.2020.104883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE This study aimed to investigate the effect of the low intensity pulsed ultrasound (LIPUS) on the dentoalveolar structures during orthodontic force application in ex-vivo model using mandible slice organ culture (MSOC) of diabetic rats. DESIGN 18 male Wistar rats with a mean weight (275 g) were randomly divided into three main groups: 1) normal rats, 2) Insulin treated diabetic rats, and 3) diabetic rats. Diabetes mellitus (DM) was induced by streptozotocin. Four weeks later, rats were euthanized, mandibles were dissected, divided into 1.5-mm slices creating mandible slice organ cultures (MSOCs). MSOCs were cultured at 37 °C in air with 5 % CO2. The following day, orthodontic spring delivering a 50-g of force was applied to each slice. In each group, rats were randomly assigned to 2 subgroups; one received 10 min of LIPUS daily and the other was the control. Culture continued for 7 days, and then the sections were prepared for histological and histomorphometric analysis. RESULTS For all study groups (Normal, Insulin Treated Diabetic and Diabetic), LIPUS treatment significantly increased the thickness of predentin, cementum, and improved bone remodeling on the tension side and increased odontoblast, sub-odontoblast, and periodontal ligaments cell counts and bone resorption lacunae number on the compression side. CONCLUSIONS Application of LIPUS treatment for 10 min daily for a week enhanced bone remodeling and repair of cementum and dentin in normal as well as diabetic MSOCs.
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Affiliation(s)
- Nada Alshihah
- Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Adel Alhadlaq
- Division of Orthodontics, Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
| | - Tarek El-Bialy
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
| | - Abdullah Aldahmash
- Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
| | - Ibrahim Olajide Bello
- Department of Oral Medicine and Diagnostic Science, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
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Santana-Rodríguez N, Clavo B, Llontop P, Fiuza MD, Calatayud-Gastardi J, López D, López-Fernández D, Aguiar-Santana IA, Ayub A, Alshehri K, Jordi NA, Zubeldia J, Bröering DC. Pulsed Ultrasounds Reduce Pain and Disability, Increasing Rib Fracture Healing, in a Randomized Controlled Trial. PAIN MEDICINE 2020; 20:1980-1988. [PMID: 30496510 DOI: 10.1093/pm/pny224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Rib fractures are an important health issue worldwide, with significant, pain, morbidity, and disability for which only symptomatic treatment exists. OBJECTIVES Based on our previous experimental model, the objective of the current study was to assess for the first time whether pulsed ultrasound (PUS) application could have beneficial effects on humans. METHODS Prospective, double-blinded, randomized, controlled trial of 51 patients. Four were excluded, and 47 were randomized into the control group (N = 23) or PUS group (N = 24). The control group received a PUS procedure without emission, and the PUS group received 1 Mhz, 0.5 W/cm2 for 1 min/cm2. Pain level, bone callus healing rate, physical and work activity, pain medication intake, and adverse events were blindly evaluated at baseline and one, three, and six months. RESULTS There were no significant differences at baseline between groups. PUS treatment significantly decreased pain by month 1 (P = 0.004), month 3 (P = 0.005), and month 6 (P = 0.025), significantly accelerated callus healing by month 1 (P = 0.013) and month 3 (P < 0.001), accelerated return to physical activity by month 3 (P = 0.036) and work activity (P = 0.001) by month 1, and considerably reduced pain medication intake by month 1 (P = 0.057) and month 3 (P = 0.017). No related adverse events were found in the PUS group. CONCLUSIONS This study is the first evidence that PUS treatment is capable of improving rib fracture outcome, significantly accelerating bone callus healing, and decreasing pain, time off due to both physical activity and convalescence period, and pain medication intake. It is a safe, efficient, and low-cost therapy that may become a new treatment for patients with stable rib fractures.
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Affiliation(s)
- Norberto Santana-Rodríguez
- Section of Thoracic Surgery, Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.,Department of Surgery, College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia.,Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Bernardino Clavo
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain.,Chronic Pain Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain.,Department of Radiation Oncology, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Pedro Llontop
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain.,Experimental Medicine and Surgery Unit of Hospital Gregorio Marañón and the Health Research Institute of Hospital Gregorio Marañón IiSGM, Madrid, Spain
| | - María D Fiuza
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | | | - Daniel López
- Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Daniel López-Fernández
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Ione A Aguiar-Santana
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias IUIBS-BioPharm Group, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Adil Ayub
- Department of Surgery, University of Texas Medical Branch Galveston, Galveston, Texas, USA
| | - Khalid Alshehri
- Section of Thoracic Surgery, Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Nagib A Jordi
- Department of Orthopedic Surgery and Upper Extremity Unit, Healthpoint Hospital, Abu Dhabi, UAE
| | - José Zubeldia
- Experimental Surgery Group, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Dieter C Bröering
- Section of Thoracic Surgery, Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Kingdom of Saudi Arabia.,Department of Surgery, College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia
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Mengi A, Ozdolap S, Koksal T, Kokturk F, Can M, Sarikaya S. Effects of Therapeutic Ultrasound Applied to the Lumbar Region on Renal Function: A Randomized Controlled Prospective Trial. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2020; 39:1327-1333. [PMID: 31971279 DOI: 10.1002/jum.15225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/30/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
OBJECTIVES Therapeutic ultrasound (TUS) is one of the most commonly used modalities in low back pain treatment. The objective of this study was to determine whether TUS applied to the low back region in patients with chronic low back pain had any effect on renal function. METHODS Forty patients with chronic low back pain were randomized to 2 groups by a block randomization method. Thirty-seven patients completed the final evaluation. All patients were treated for 5 sessions per week for 3 weeks with the same physiotherapy modalities (superficial heating and transcutaneous electrical nerve stimulation) and exercise therapy; in addition to these treatments, the second group was treated with TUS for 10 minutes (frequency, 1 MHz; intensity, 1.5 W/cm2 ; and effective irradiation area of the transducer head, 5 cm2 ). The serum creatinine, serum cystatin C, 24-hour urine creatinine, creatinine clearance, 24-hour urine microalbumin and microprotein, urine volume, and glomerular filtration rate were measured. The patients were evaluated at baseline (day 0) and the end of the treatment (day 21). RESULTS The serum cystatin C levels were increased in both groups, but this increase was not significant (P > .05). There was no difference between the groups in the percent change in all outcome measures (P > .05). CONCLUSIONS This showed that TUS applied to the low back region does not affect renal function.
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Affiliation(s)
- Alper Mengi
- Department of Physical Medicine and Rehabilitation, Bagcilar Training and Research Hospital, Bagcilar, Istanbul, Turkey
| | - Senay Ozdolap
- Department of Physical Medicine and Rehabilitation, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Tugce Koksal
- Department of Physical Medicine and Rehabilitation, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Furuzan Kokturk
- Department of Biostatistics, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Murat Can
- Department of Biochemistry, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Selda Sarikaya
- Department of Physical Medicine and Rehabilitation, Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
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Response of Saos-2 osteoblast-like cells to kilohertz-resonance excitation in porous metallic scaffolds. J Mech Behav Biomed Mater 2020; 106:103726. [DOI: 10.1016/j.jmbbm.2020.103726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/10/2020] [Accepted: 03/10/2020] [Indexed: 12/13/2022]
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Wu S, Zheng T, Du J, Yuan Y, Shi Q, Wang Z, Liu D, Liu J, Wang X, Liu L. Neuroprotective effect of low-intensity transcranial ultrasound stimulation in endothelin-1-induced middle cerebral artery occlusion in rats. Brain Res Bull 2020; 161:127-135. [PMID: 32439337 DOI: 10.1016/j.brainresbull.2020.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ischemic stroke is one of the leading causes of death and disability worldwide. Low-intensity transcranial ultrasound stimulation (LITUS) is a promising neuroprotective treatment for ischemic stroke. Diffusion-weighted imaging (DWI) can be highly sensitive in the detection of ischemic brain injury. Relative apparent diffusion coefficient (rADC) values can be used to evaluate the effect of LITUS on ischemic stroke. PURPOSE The aim of this study was to determine the neuroprotective effect of LITUS at different time points using endothelin-1-induced middle cerebral artery occlusion in rats as a model of ischemic stroke. METHODS Endothelin-1 (ET-1) was injected into the cerebral parenchyma near the middle cerebral artery, which induced focal, reversible, low-flow ischemia in rats. After occlusion of the middle cerebral artery for 30 min, 120 min, and 240 min, LITUS stimulation was used respectively. DWI was performed at 1, 3, 6, 12, 18, 24, 48, and 72 h after ischemia using a 3 T scanner. The rADC values were calculated, and functional outcomes assessed using neurobehavioral scores after ischemia. Nissl staining and estimation of Na+-K+-ATPase activity were used to assess the neuropathology after completing the last Magnetic Resonance Imaging (MRI) examination. RESULTS Endothelin-1-induced occlusion of the middle cerebral artery resulted in significant dysfunction and neuronal damage in rats. Rats that received LITUS exhibited reduced damage of the affected brain tissue after cerebral ischemia. The greatest protective effect was found when LITUS stimulation occurred 30 min after cerebral ischemia. CONCLUSIONS Imaging, behavioral, and histological results suggested that LITUS stimulation after an ischemic stroke produced significant neuroprotective effects.
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Affiliation(s)
- Shuo Wu
- Graduate School of Hebei Medical University, China
| | - Tao Zheng
- Qinhuangdao Municipal No. 1 Hospital, China
| | - Juan Du
- Qinhuangdao Municipal No. 1 Hospital, China
| | - Yi Yuan
- Institute of Electrical Engineering, Yanshan University, China
| | - Qinglei Shi
- Scientific Clinical Specialist, Siemens Ltd., China
| | | | - Defeng Liu
- Qinhuangdao Municipal No. 1 Hospital, China
| | - Jian Liu
- Northeastern University, School of Information Science and Engineering, China
| | - Xiaohan Wang
- Graduate School of Chengde Medical University, China
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Zheng T, Du J, Yuan Y, Wu S, Jin Y, Wang Z, Liu D, Shi Q, Wang X, Liu L. Neuroprotective Effect of Low-Intensity Transcranial Ultrasound Stimulation in Moderate Traumatic Brain Injury Rats. Front Neurosci 2020; 14:172. [PMID: 32218720 PMCID: PMC7078644 DOI: 10.3389/fnins.2020.00172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/17/2020] [Indexed: 01/30/2023] Open
Abstract
Traumatic brain injury (TBI) is a kind of severe brain injury characterized with a high incidence rate and a high disability rate. Low-intensity transcranial ultrasound stimulation (LITUS) is a promising neuroprotective method for improving the functional prognosis of TBI. The fractional anisotropy (FA) value and mean diffusivity (MD) value can be sensitive to abnormal brain structure and function and can thus be used to evaluate the effect of LITUS on TBI. Our purpose was to evaluate the therapeutic effect of LITUS in a moderate TBI rat model with FA and MD values. For our method, we used 45 male Sprague Dawley rats (15 sham normal, 15 TBI, and 15 LITUS treatment rats). We used single-shot spin echo echo-planar imaging sequences at 3.0T to obtain the DTI parameters. Parameters of FA and MD on the treated side of the injury cortex were measured to evaluate the therapeutic effect of LITUS in a TBI rat model. For FA and MD values, groups were compared by using a two-way analysis of variance for repeated measures, and this was followed by Tukey's post hoc test. Differences were considered significant at P < 0.05. The results were that the FA value in the LITUS treatment group at 1 day after TBI was significantly higher than that in the control group (adjusted P = 0.0422) and significantly lower than that in the TBI group at 14, 21, and 35 days after TBI (adjusted P = 0.0015, 0.0064, and 0.0173, respectively). At the end of the scan time point, the differences between the two groups were not significant (adjusted P = 0.3242). The MD values in the LITUS treatment group were significantly higher in the early stage than that in the TBI group (adjusted P = 0.0167) and significantly lower at the following time points than in the TBI group. In conclusion, daily treatment with LITUS for 10 min effectively improved the brain damage in the Controlled Cortical Impact (CCI)-caused TBI model. FA and MD values can serve as evaluation indicators for the neuro-protective effect of LITUS.
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Affiliation(s)
- Tao Zheng
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | - Juan Du
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | - Yi Yuan
- Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China
| | - Shuo Wu
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | - Yinglan Jin
- Peking University Health Science Center, Beijing, China
| | - Zhanqiu Wang
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | - Defeng Liu
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | | | - Xiaohan Wang
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
| | - Lanxiang Liu
- Department of Magnetic Resonance Imaging, Qinhuangdao Municipal No. 1 Hospital, Qinhuangdao, China
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Tabuchi Y, Hasegawa H, Suzuki N, Furusawa Y, Hirano T, Nagaoka R, Takeuchi SI, Shiiba M, Mochizuki T. Low-intensity pulsed ultrasound promotes the expression of immediate-early genes in mouse ST2 bone marrow stromal cells. J Med Ultrason (2001) 2020; 47:193-201. [PMID: 32026128 DOI: 10.1007/s10396-020-01007-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 12/26/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE The effects of low-intensity pulsed ultrasound (LIPUS) on the expression of immediate-early genes (IEGs) in bone marrow stromal cells (BMSCs) were evaluated to elucidate the early cellular response to LIPUS. METHODS Mouse ST2 BMSCs were treated with LIPUS (ISATA, 12-34 mW/cm2 for 20 min), then cultured at 37 °C. The expression levels of four IEGs (Fos, Egr1, Jun, and Ptgs2) and ERK1/2, a mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK), were assessed using real-time quantitative PCR and Western blot analyses, respectively. RESULTS A single exposure of LIPUS at an intensity of 25 mW/cm2 significantly and transiently increased the expression levels of all four IEGs, and the peak expression was detected at 30-60 min after LIPUS stimulation. LIPUS exposure also significantly increased the phosphorylation level of ERK1/2. U0126, an inhibitor of MAPK/ERK, significantly prevented LIPUS-induced expression of Fos and Egr1, but not that of Jun and Ptgs2. On the other hand, treatment of the cells with LIPUS did not affect cell growth or alkaline phosphatase activity, a marker of osteoblast differentiation. CONCLUSION These results suggest that LIPUS exposure significantly induces expression of IEGs such as Fos and Egr1 via the MAPK/ERK pathway in ST2 BMSCs.
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Affiliation(s)
- Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. .,Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan.
| | - Hideyuki Hasegawa
- Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Ishikawa, Japan
| | - Yukihiro Furusawa
- Department of Liberal Arts and Sciences, Toyama Prefectural University, Toyama, Japan
| | - Tetsushi Hirano
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Ryo Nagaoka
- Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
| | - Shin-Ichi Takeuchi
- Graduate School of Biomedical Engineering, Toin University of Yokohama, Yokohama, Japan
| | - Michihisa Shiiba
- Faculty of Health Sciences, Nihon Institute of Medical Science, Saitama, Japan
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Arai C, Kawai N, Nomura Y, Tsuge A, Nakamura Y, Tanaka E. Low-intensity pulsed ultrasound enhances the rate of lateral tooth movement and compensatory bone formation in rats. Am J Orthod Dentofacial Orthop 2020; 157:59-66. [PMID: 31901282 DOI: 10.1016/j.ajodo.2019.01.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 11/01/2018] [Accepted: 01/01/2019] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Because mechanical stimulation of the periodontal ligament by low-intensity pulsed ultrasound (LIPUS) has been shown to increase the speed of bone remodeling, this study aimed to examine the effects of LIPUS stimulation on the rate of tooth movement and bone remodeling during lateral tooth movement. METHODS Twelve-week-old Wistar rats were divided into 2 groups. The LIPUS group received experimental tooth movement with LIPUS stimulation, and the tooth movement (TM) group were provided experimental tooth movement without LIPUS. For each group, the upper right first molars were moved buccally with fixed appliances. LIPUS exposure was placed in the region corresponding to the right maxillary first molar. Three days after tooth movement, tartrate-resistant acid phosphatase was examined. Fourteen days after tooth movement, the intermolar width, bone mineral content, and bone volume fraction were analyzed by micro-computed tomography, and newly formed bone was measured histomorphometrically. RESULTS The number of TRAP-positive cells in the compressed region was higher in the LIPUS group. The intermolar width was significantly higher in the LIPUS group than in the TM group. The alveolar bone around the maxillary first molar showed no differences in bone mineral content and bone volume fraction between the LIPUS and TM groups. The LIPUS group exhibited a more significant amount of newly formed alveolar bone than the TM group. CONCLUSIONS The present study provides evidence of the beneficial effects of LIPUS on the lateral tooth movement.
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Affiliation(s)
- Chihiro Arai
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan.
| | - Nobuhiko Kawai
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshiaki Nomura
- Department of Translation Research, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Atsushi Tsuge
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Yoshiki Nakamura
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
| | - Eiji Tanaka
- Department of Orthodontics, Faculty of Dentistry, King Abdul Aziz University, Jeddah, Kingdom of Saudi Arabia
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Doll J, Moghaddam A, Daniel V, Biglari B, Heller R, Schmidmaier G, Raven TF. LIPUS vs. reaming in non-union treatment: Cytokine expression course as a tool for evaluation and differentiation of non-union therapy. J Orthop 2020; 17:208-214. [PMID: 31889743 DOI: 10.1016/j.jor.2019.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 08/11/2019] [Indexed: 11/26/2022] Open
Affiliation(s)
- Julian Doll
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, D-69118, Heidelberg, Germany
| | - Arash Moghaddam
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, D-69118, Heidelberg, Germany.,ATORG - Aschaffenburg Trauma and Orthopaedic Research Group, Center of Trauma & Orthopaedic Surgery, Sports Medicine, Aschaffenburg-Alzenau, Am Hasenkopf 1, D-63739, Aschaffenburg, Germany
| | - Volker Daniel
- Institute of Immunology, University of Heidelberg, Im Neuenheimer Feld 305, D-69120, Heidelberg, Germany
| | - Bahram Biglari
- BG Trauma Center Ludwigshafen, Ludwig-Guttmann-Straße 13, D-67071, Ludwigshafen, Germany
| | - Raban Heller
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, D-69118, Heidelberg, Germany
| | - Gerhard Schmidmaier
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, D-69118, Heidelberg, Germany
| | - Tim Friedrich Raven
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg University Hospital, D-69118, Heidelberg, Germany.,ATORG - Aschaffenburg Trauma and Orthopaedic Research Group, Center of Trauma & Orthopaedic Surgery, Sports Medicine, Aschaffenburg-Alzenau, Am Hasenkopf 1, D-63739, Aschaffenburg, Germany
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Miyamoto H, Sawaji Y, Iwaki T, Masaoka T, Fukada E, Date M, Yamamoto K. Intermittent pulsed electromagnetic field stimulation activates the mTOR pathway and stimulates the proliferation of osteoblast‐like cells. Bioelectromagnetics 2019; 40:412-421. [DOI: 10.1002/bem.22207] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 06/26/2019] [Indexed: 02/04/2023]
Affiliation(s)
- Hironori Miyamoto
- Department of Orthopedic SurgeryTokyo Medical University Tokyo Japan
| | - Yasunobu Sawaji
- Department of Orthopedic SurgeryTokyo Medical University Tokyo Japan
| | - Takahiro Iwaki
- Department of Orthopedic SurgeryTokyo Medical University Tokyo Japan
| | - Toshinori Masaoka
- Department of Orthopedic SurgeryTokyo Medical University Tokyo Japan
| | - Eiichi Fukada
- Laboratory of PiezoelectricityKobayasi Institute of Physical Research Tokyo Japan
| | - Munehiro Date
- Laboratory of PiezoelectricityKobayasi Institute of Physical Research Tokyo Japan
| | - Kengo Yamamoto
- Department of Orthopedic SurgeryTokyo Medical University Tokyo Japan
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Hidaka K, Mikuni-Takagaki Y, Wada-Takahashi S, Saita M, Kawamata R, Sato T, Kawata A, Miyamoto C, Maehata Y, Watabe H, Tani-Ishii N, Hamada N, Takahashi SS, Deguchi S, Takeuchi R. Low-Intensity Pulsed Ultrasound Prevents Development of Bisphosphonate-Related Osteonecrosis of the Jaw-Like Pathophysiology in a Rat Model. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:1721-1732. [PMID: 31006496 DOI: 10.1016/j.ultrasmedbio.2019.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/21/2018] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
We developed a rat model of bisphosphonate-related osteonecrosis of the jaw (BRONJ) by removing a maxillary molar tooth (M1) from ovariectomized rats after treatment with alendronate. To mimic periodontitis, some of the rats were administered Porphyromonas gingivalis (p. gingivalis) at the M1 site every 2 to 3 d for 2 wk. Rats pretreated with alendronate plus p. gingivalis showed delayed healing of socket epithelia, periosteal reaction of alveolar bone formation and lower bone mineral density in the alveolus above adjacent M2 teeth. These abnormalities were prevented by tooth socket exposure to 20 min/d low-intensity pulsed ultrasound (LIPUS), which restored diminished expression of RANKL, Bcl-2, IL-6, Hsp70, NF-κB and TNF-α messenger ribonucleic acids in remote bone marrow, suggesting LIPUS prevented development of BRONJ-like pathophysiology in rat by inducing systemic responses for regeneration, in addition to accelerating local healing. Non-invasive treatment by LIPUS, as well as low-level laser therapy, may be useful for medication-related osteonecrosis of the jaw patients.
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Affiliation(s)
- Kouki Hidaka
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan; Department of Oral Interdisciplinary Medicine, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Yuko Mikuni-Takagaki
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan.
| | - Satoko Wada-Takahashi
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Makiko Saita
- Department of Oral Interdisciplinary Medicine, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Ryota Kawamata
- Department of Dentomaxillofacial Diagnosis and Treatment, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Takenori Sato
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Akira Kawata
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Chihiro Miyamoto
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Yojiro Maehata
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Hirotaka Watabe
- Department of Oral Interdisciplinary Medicine, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Nobuyuki Tani-Ishii
- Department of Oral Interdisciplinary Medicine, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Nobushiro Hamada
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Shun-Suke Takahashi
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Shinji Deguchi
- Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Ryohei Takeuchi
- Department of Oral Science, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan; Joint Surgery Center, Kawasaki Saiwai Hospital, Kawasaki, Japan
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Yang B, Li M, Lei H, Xu Y, Li H, Gao Z, Guan R, Xin Z. Low Intensity Pulsed Ultrasound Influences the Myogenic Differentiation of Muscle Satellite Cells in a Stress Urinary Incontinence Rat Model. Urology 2018; 123:297.e1-297.e8. [PMID: 30273612 DOI: 10.1016/j.urology.2018.09.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/08/2018] [Accepted: 09/18/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To investigate the therapeutic effect of low intensity pulsed ultrasound (LIPUS) in a stress urinary incontinence (SUI) rat model and its influence on myogenic satellite cells. METHODS Fifty Sprague-Dawley rats underwent vaginal distension and bilateral ovariectomy mimicking partum injury and menopause to construct SUI models, which were further randomized into 100 mW/cm2 LIPUS, 200 mW/cm2 LIPUS, 300 mW/cm2 LIPUS, and none-treatment control subgroups with 10 rats per subgroup. Ten rats served as mock operation control. Leak point pressure and bladder capacity were recorded 1 week after LIPUS treatment. Immunofluorescence staining and Western blot were performed to examine histological changes, myodifferentiation, and signaling pathway. RESULTS Here,we found the leak point pressure and bladder capacity were restored in 200 mW/cm2 LIPUS and 300 mW/cm2 LIPUS groups, but not in 100 mW/cm2 LIPUS group. More robust striated muscle regeneration was observed in 200 mW/cm2 LIPUS group comparing with the SUI none-treatment group. Moreover, we found LIPUS activated the myodifferentiation of muscle satellite cells, which is correlated to p38 phosphorylation level. CONCLUSION LIPUS restored the leak point pressure and bladder capacity, and activated satellite cell myodifferentiation in SUI rat model.
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Affiliation(s)
- Bicheng Yang
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Meng Li
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Hongen Lei
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Yongde Xu
- Department of Urology, First Hospital Affiliated to Chinese PLA General Hospital, Beijing, China
| | - Huixi Li
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Zhezhu Gao
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Ruili Guan
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China
| | - Zhongcheng Xin
- Molecular Biology Laboratory of Andrology Center, Peking University First Hospital, Peking University, Beijing, China.
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Effects of low-magnitude high-frequency vibration on osteoblasts are dependent on estrogen receptor α signaling and cytoskeletal remodeling. Biochem Biophys Res Commun 2018; 503:2678-2684. [DOI: 10.1016/j.bbrc.2018.08.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 12/19/2022]
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Liu X, Wang B, Ding H, Shi H, Liu J, Sun H. Low-intensity pulsed ultrasound in combination with SonoVue induces cytotoxicity of human renal glomerular endothelial cells via repression of the ERK1/2 signaling pathway. Ren Fail 2018; 40:458-465. [PMID: 30122107 PMCID: PMC6104615 DOI: 10.1080/0886022x.2018.1487868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/30/2022] Open
Abstract
OBJECTIVES Low-intensity pulsed ultrasound (LIPUS) and SonoVue have been used widely for diagnosis and therapeutic treatment. The effects of LIPUS and SonoVue on the microvascular system and underlying molecular mechanisms have not been established. METHODS Cultured human renal glomerular endothelial cells (HRGECs) were treated with 5-min ultrasonic irradiation, 20% SonoVue or the combination of both treatments. Cell proliferation, viablity, and apoptosis were measured by MTT assay, Trypan blue exclusion assay and flow cytometry, respectively. Activation of extracellular regulated protein kinases (ERK) were examined by Western blot. RESULTS We found that LIPUS and SonoVue alone do not induce cytotoxicity of HRGECs; however, the combination of the two treatments reduces cell proliferation and increases cell death. In addition, the combination of LIPUS and SonoVue suppressed the activation of ERK 1/2 in HRGRCs. With pretreatment of the inhibitor of ERK1/2 signaling, PD98059, LIPUS, and SonoVue does not induce additional cell death and inhibition of proliferation. CONCLUSIONS LIPUS combined with SonoVue induces cytotoxicity of HRGECs via repression of the ERK1/2 signaling pathway.
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Affiliation(s)
- Xiu Liu
- a Shandong Provincial Qianfoshan Hospital, Shandong University , Jinan , China.,b Department of Cardiography , Yantai Affiliated Hospital of Binzhou Medical University , Yantai , China
| | - Bei Wang
- c Department of Ultrasonography , Shandong Provincial Qianfoshan Hospital, Shandong University , Jinan , China
| | - Hongyu Ding
- c Department of Ultrasonography , Shandong Provincial Qianfoshan Hospital, Shandong University , Jinan , China
| | - Hao Shi
- d Department of Radiology, Shandong Provincial Qianfoshan Hospital , Shandong University , Jinan , China
| | - Ju Liu
- e Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University , Jinan , China
| | - Hongjun Sun
- e Medical Research Center, Shandong Provincial Qianfoshan Hospital, Shandong University , Jinan , China
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Shuai C, Yang W, Peng S, Gao C, Guo W, Lai Y, Feng P. Physical stimulations and their osteogenesis-inducing mechanisms. Int J Bioprint 2018; 4:138. [PMID: 33102916 PMCID: PMC7581999 DOI: 10.18063/ijb.v4i2.138] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/09/2018] [Indexed: 12/27/2022] Open
Abstract
Physical stimulations such as magnetic, electric and mechanical stimulation could enhance cell activity and promote bone formation in bone repair process via activating signal pathways, modulating ion channels, regulating bonerelated gene expressions, etc. In this paper, bioeffects of physical stimulations on cell activity, tissue growth and bone healing were systematically summarized, which especially focused on their osteogenesis-inducing mechanisms. Detailedly, magnetic stimulation could produce Hall effect which improved the permeability of cell membrane and promoted the migration of ions, especially accelerating the extracellular calcium ions to pass through cell membrane. Electric stimulation could induce inverse piezoelectric effect which generated electric signals, accordingly up-regulating intracellular calcium levels and growth factor synthesis. And mechanical stimulation could produce mechanical signals which were converted into corresponding biochemical signals, thus activating various signaling pathways on cell membrane and inducing a series of gene expressions. Besides, bioeffects of physical stimulations combined with bone scaffolds which fabricated using 3D printing technology on bone cells were discussed. The equipments of physical stimulation system were described. The opportunities and challenges of physical stimulations were also presented from the perspective of bone repair.
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Affiliation(s)
- Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, China.,Jiangxi University of Science and Technology, Ganzhou, China.,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China
| | - Wenjing Yang
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, China
| | - Shuping Peng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, China
| | - Wang Guo
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, China
| | - Yuxiao Lai
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, China
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha, China
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Cell type-specific suppression of mechanosensitive genes by audible sound stimulation. PLoS One 2018; 13:e0188764. [PMID: 29385174 PMCID: PMC5791945 DOI: 10.1371/journal.pone.0188764] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 11/13/2017] [Indexed: 11/19/2022] Open
Abstract
Audible sound is a ubiquitous environmental factor in nature that transmits oscillatory compressional pressure through the substances. To investigate the property of the sound as a mechanical stimulus for cells, an experimental system was set up using 94.0 dB sound which transmits approximately 10 mPa pressure to the cultured cells. Based on research on mechanotransduction and ultrasound effects on cells, gene responses to the audible sound stimulation were analyzed by varying several sound parameters: frequency, wave form, composition, and exposure time. Real-time quantitative PCR analyses revealed a distinct suppressive effect for several mechanosensitive and ultrasound-sensitive genes that were triggered by sounds. The effect was clearly observed in a wave form- and pressure level-specific manner, rather than the frequency, and persisted for several hours. At least two mechanisms are likely to be involved in this sound response: transcriptional control and RNA degradation. ST2 stromal cells and C2C12 myoblasts exhibited a robust response, whereas NIH3T3 cells were partially and NB2a neuroblastoma cells were completely insensitive, suggesting a cell type-specific response to sound. These findings reveal a cell-level systematic response to audible sound and uncover novel relationships between life and sound.
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Ling L, Feng X, Wei T, Wang Y, Wang Y, Zhang W, He L, Wang Z, Zeng Q, Xiong Z. Effects of low-intensity pulsed ultrasound (LIPUS)-pretreated human amnion-derived mesenchymal stem cell (hAD-MSC) transplantation on primary ovarian insufficiency in rats. Stem Cell Res Ther 2017; 8:283. [PMID: 29258619 PMCID: PMC5735876 DOI: 10.1186/s13287-017-0739-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/26/2017] [Accepted: 11/29/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Human amnion-derived mesenchymal stem cells (hAD-MSCs) have the features of mesenchymal stem cells (MSCs). Low-intensity pulsed ultrasound (LIPUS) can promote the expression of various growth factors and anti-inflammatory molecules that are necessary to keep the follicle growing and to reduce granulosa cell (GC) apoptosis in the ovary. This study aims to explore the effects of LIPUS-pretreated hAD-MSC transplantation on chemotherapy-induced primary ovarian insufficiency (POI) in rats. METHODS The animals were divided into control, POI, hAD-MSC treatment, and LIPUS-pretreated hAD-MSC treatment groups. POI rat models were established by intraperitoneal injection of cyclophosphamide (CTX). The hAD-MSCs isolated from the amnion were exposed to LIPUS or sham irradiation for 5 consecutive days and injected into the tail vein of POI rats. Expression and secretion of growth factors promoted by LIPUS in hAD-MSCs were detected by real-time quantitative polymerase chain reaction (RT-qPCR) and enzyme-linked immunosorbent assay (ELISA) in vitro. Estrous cycle, serum sex hormone levels, follicle counts, ovarian pathological changes, GC apoptosis, Bcl2 and Bax expression, and pro-inflammatory cytokine levels in ovaries were examined. RESULTS Primary hAD-MSCs were successfully isolated from the amnion. LIPUS promoted the expression and secretion of growth factors in hAD-MSCs in vitro. Both hAD-MSC and LIPUS-pretreated hAD-MSC transplantation increased the body and reproductive organ weights, improved ovarian function, and reduced reproductive organ injuries in POI rats. Transplantation of hAD-MSCs increased the Bcl-2/Bax ratio and reduced GC apoptosis and ovarian inflammation induced by chemotherapy in ovaries. These effects could be improved by pretreatment with LIPUS on hAD-MSCs. CONCLUSION Both hAD-MSC transplantation and LIPUS-pretreated hAD-MSC transplantation can repair ovarian injury and improve ovarian function in rats with chemotherapy-induced POI. LIPUS-pretreated hAD-MSC transplantation is more advantageous for reducing inflammation, improving the local microenvironment, and inhibiting GC apoptosis induced by chemotherapy in ovarian tissue of POI rats.
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Affiliation(s)
- Li Ling
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Xiushan Feng
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Tianqin Wei
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Yan Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400010 China
| | - Yaping Wang
- Department of Histology and Embryology, Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, 400010 China
| | - Wenqian Zhang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Lianli He
- Department of Obstetrics and Gynecology, the Third Affiliated Hospital, Zunyi Medical College, Zunyi, 563000 Guizhou China
| | - Ziling Wang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Qianru Zeng
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
| | - Zhengai Xiong
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 400010 China
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Comparison of the in vitro effects of low-level laser therapy and low-intensity pulsed ultrasound therapy on bony cells and stem cells. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2017; 133:36-48. [PMID: 29126668 DOI: 10.1016/j.pbiomolbio.2017.11.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/02/2017] [Accepted: 11/07/2017] [Indexed: 02/06/2023]
Abstract
To compare the in vitro effectiveness of Low-Level Laser Therapy (LLLT) and Low Intensity Pulsed Ultrasound (LIPUS) on bony cells and related stem cells. In this study, we aim to systematically review the published scientific literature which explores the use of LLLT and LIPUS to biostimulate the activity or the proliferation of bony cells or stem cells in vitro. We searched the database PubMed for LLLT or LIPUS, with/without bone, osteoblast, osteocyte, stem cells, the human osteosarcoma cell line (MG63), bone-forming cells, and cell culture (or in vitro). These studies were subdivided into categories exploring the effect of LLLT or LIPUS on bony cells, stem cells, and other related cells. 75 articles were found between 1987 and 2016; these included: 50 full paper articles on LLLT and 25 full papers on LIPUS. These articles met the eligibility criteria and were included in our review. A detailed and concise description of the LLLT and the LIPUS protocols and their individual effects on bony cells or stem cells and their results are presented in five tables. Based on the main results and the conclusions of the reviewed articles in the current work, both, LLLT and LIPUS, apply a biostimulatory effect on osteoblasts, osteocytes, and enhance osteoblast proliferation and differentiation on different bony cell lines used in in vitro studies, and therefore, these may be useful tools for bone regeneration therapy. Moreover, in consideration of future cell therapy protocols, both, LLLT and LIPUS (especially LLLT), enhnce a significant increase in the initial number of SCs before differentiation, thus increasing the number of differentiated cells for tissue engineering, regenerative medicine, and healing. Further studies are necessary to determine the LLLT or the LIPUS parameters, which are optimal for biostimsulating bony cells and SCs for bone healing and regenerative medicine.
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Matsuo T, Sato K, Matsui T, Sawada S, Muramatsu Y, Kawanami K, Deie M. Inhibitory effects of low-intensity pulsed ultrasound sonication on the proliferation of osteosarcoma cells. Oncol Lett 2017; 14:3071-3076. [PMID: 28928844 DOI: 10.3892/ol.2017.6472] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/16/2017] [Indexed: 11/06/2022] Open
Abstract
To date, there is limited data on the biological effects of low-intensity pulsed ultrasound (LIPUS) on primary malignant bone tumors. The purpose of the present study was to investigate the antitumor effects of LIPUS on osteosarcoma cells. The effects of LIPUS on cell viability, induction of apoptosis, mitochondrial membrane potential and intracellular signaling molecules in the LM8 osteosarcoma cell line were investigated. LIPUS inhibited cell viability (P=0.0022) and mitochondrial membrane potential (P=0.0019) in LM8 cells. Flow cytometry analysis and terminal deoxynucleotidyl transferase dUTP nick end labeling staining revealed significantly higher numbers of apoptotic (P<0.0001) and necrotic cells (P=0.0091) compared with cells without treatment. LIPUS treatment significantly increased phosphorylated Akt (P<0.0001) and IκBα (P=0.0001) levels, and reduced phosphorylated mitogen-activated protein kinase 7 (P<0.0001) and phosphorylated checkpoint kinase 1 (P=0.0008) levels. These results suggest that LIPUS is a non-invasive adjuvant therapy that is able to inhibit cellular proliferation in osteosarcoma cells.
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Affiliation(s)
- Toshihiro Matsuo
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Keiji Sato
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Takuya Matsui
- Department of Physiology, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Shigeyuki Sawada
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Yoshitaka Muramatsu
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Katsuhisa Kawanami
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
| | - Masataka Deie
- Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
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Xiao W, Xu Q, Zhu Z, Li L, Chen W. Different performances of CXCR4, integrin-1β and CCR-2 in bone marrow stromal cells (BMSCs) migration by low-intensity pulsed ultrasound stimulation. ACTA ACUST UNITED AC 2017; 62:89-95. [PMID: 27107829 DOI: 10.1515/bmt-2015-0166] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 03/24/2016] [Indexed: 01/04/2023]
Abstract
Low-intensity pulsed ultrasound (LIPUS) is an established therapy for fracture healing where bone marrow stromal cells (BMSCs) migration is crucial to bone regeneration. This work focused on different performances of C-X-C-receptor 4 (CXCR4), integrin-1β and chemokine-chemokine receptor2 (CCR-2) in BMSCs migration by LIPUS stimulation. Single 20-min LIPUS treatment was applied to BMSCs during wound healing assay with or without the inhibitor AMD3100. The migration rate of BMSCs with LIPUS stimulation exhibited a higher closure rate than that of BMSCs without LIPUS stimulation, which was 1.89 μm/h and 1.38 μm/h, respectively. After LIPUS stimulation, significant elevation of the expression of CXCR4, integrin-1β and CCR-2 was observed. When AMD3100 was added, the migration rate of the BMSCs was obviously declined with or without LIPUS treatment. Furthermore, the expression of CXCR4 was significantly down-regulated by AMD3100, while integrin-1β and CCR-2 were less affected. It suggested that the enhancement of the migration of the BMSCs by LIPUS was inhibited by AMD3100. The results confirmed that LIPUS stimulation was able to activate and improve migration of BMSCs. Nevertheless, CXCR4 and both integrin-1β and CCR-2 had different roles in BMSCs migration after LIPUS treatment.
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Abstract
Ultrasound is an inaudible form of acoustic sound wave at 20 kHz or above that is widely used in the medical field with applications including medical imaging and therapeutic stimulation. In therapeutic ultrasound, low-intensity pulsed ultrasound (LIPUS) is the most widely used and studied form that generally uses acoustic waves at an intensity of 30 mW/cm2, with 200 ms pulses and 1.5 MHz. In orthopaedic applications, it is used as a biophysical stimulus for musculoskeletal tissue repair to enhance tissue regeneration. LIPUS has been shown to enhance fracture healing by shortening the time to heal and reestablishment of mechanical properties through enhancing different phases of the healing process, including the inflammatory phase, callus formation, and callus remodelling phase. Reports from in vitro studies reveal insights in the mechanism through which acoustic stimulations activate cell surface integrins that, in turn, activate various mechanical transduction pathways including FAK (focal adhesion kinase), ERK (extracellular signal-regulated kinase), PI3K, and Akt. It is then followed by the production of cyclooxygenase 2 and prostaglandin E2 to stimulate further downstream angiogenic, osteogenic, and chondrogenic cytokines, explaining the different enhancements observed in animal and clinical studies. Furthermore, LIPUS has also been shown to have remarkable effects on mesenchymal stem cells (MSCs) in musculoskeletal injuries and tissue regeneration. The recruitment of MSCs to injury sites by LIPUS requires the SDF-1 (stromal cell derived factor-1)/CXCR-4 signalling axis. MSCs would then differentiate differently, and this is regulated by the presence of different cytokines, which determines their fates. Other musculoskeletal applications including bone–tendon junction healing, and distraction osteogenesis are also explored, and the results are promising. However, the use of LIPUS is controversial in treating osteoporosis, with negative findings in clinical settings, which may be attributable to the absence of an injury entry point for the acoustic signal to propagate, strong attenuation effect of cortical bone and the insufficient intensity for penetration, whereas in some animal studies it has proven effective.
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Affiliation(s)
- Ning Zhang
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Simon Kwoon-Ho Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China.,The Chinese University of Hong Kong - Astronaut Center of China (CUHK-ACC) Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Kwok-Sui Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Wing-Hoi Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China.,The Chinese University of Hong Kong - Astronaut Center of China (CUHK-ACC) Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, China
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Kaur H, Uludağ H, Dederich DN, El-Bialy T. Effect of Increasing Low-Intensity Pulsed Ultrasound and a Functional Appliance on the Mandibular Condyle in Growing Rats. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2017; 36:109-120. [PMID: 27925675 DOI: 10.7863/ultra.15.06063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 04/07/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES Functional appliances are used for treatment of lower-jaw deficiencies in growing individuals; however, their effectiveness is debatable. Low-intensity pulsed ultrasound (US) is a noninvasive method, which has been shown to stimulate cartilage and bone formation with 20 minutes of application. This study was designed to test the hypothesis that increasing low-intensity pulsed US application from 20 to 40 min/d will enhance mandibular condylar growth in growing rats, especially when combined with a functional appliance. METHODS Fifty-four Sprague Dawley rats were divided into 6 groups (n = 9): control, low-intensity pulsed US for 20 minutes, low-intensity pulsed US for 40 minutes, the functional appliance, the functional appliance plus low-intensity pulsed US for 20 minutes, and the functional appliance plus low-intensity pulsed US for 40 minutes. Low-intensity pulsed US was applied for 28 days. All rats were then euthanized, and their mandibles were dissected for morphometric, histomorphometric, and micro-computed tomographic analyses. RESULTS Among all study groups, the 20-minute US group showed significant increases in most of the measured variables (P < .05) except for condylar process length (P = .18), whereas the functional appliance-plus-40-min US group showed the least favorable results. The 20-minute US group showed increases in proliferative and hypertrophic cell counts and widths and enhanced microarchitecture of trabecular bone compared with the 40-minute US group. The functional appliance-plus-20-minute US group showed better results compared with the functional appliance-alone and functional appliance-plus-40-minute US groups. CONCLUSIONS A daily application of low-intensity pulsed US for 20 minutes in growing rats affects mandibular growth, either alone or in combination with a functional appliance. Further study with a longer observation period is required to study the long-term effects and stability of newly formed bone.
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Affiliation(s)
- Harmanpreet Kaur
- Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Medical Science Graduate Program, University of Alberta, Edmonton, Alberta, Canada
| | - Hasan Uludağ
- Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Douglas N Dederich
- Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Tarek El-Bialy
- Departments of Dentistry and Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada
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Chen Y, Xu J, Liao H, Ma Z, Zhang Y, Chen H, Huang Z, Hu J. Prostaglandin E2 and Connexin 43 crosstalk in the osteogenesis induced by extracorporeal shockwave. Med Hypotheses 2016; 94:123-5. [PMID: 27515217 DOI: 10.1016/j.mehy.2016.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 07/12/2016] [Accepted: 07/18/2016] [Indexed: 02/05/2023]
Abstract
As a type of mechanical stimulation, extracorporeal shockwave (ESW) has been widely used in the clinic to treat bone fracture delayed union and non-unions. A large number of studies have shown beneficial effects of ESW in promoting fracture healing by inducing bone regeneration; however, the underlying mechanisms remain unclear. ESW has been shown to induce the production of prostaglandin E2 (PGE2), which is essential for gap junction intercellular communication in response to mechanical stress. Among the 19 known gap junction subunits, connexin43 (Cx43) is the most prevalent for mediating the response of mechanical stress. However, to our knowledge, the effect of ESW on Cx43 expression has not been reported before. Herein, we propose that a crosstalk between PGE2 and Cx43 is involved in the enhancement of osteogenesis induced by ESW. We review the currently available data to propose an unrevealed, but important mechanism via which ESW treatment affects osteogenic differentiation of bone marrow stromal cells.
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Affiliation(s)
- Youbin Chen
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Jiankun Xu
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China; Department of Orthopedics and Traumatology, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Haojie Liao
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Zebin Ma
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Yuantao Zhang
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Hongjiang Chen
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Zhonglian Huang
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Jun Hu
- Department of Orthopedics, the First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, 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] [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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Kim HB, Swanberg KM, Han HS, Kim JC, Kim JW, Lee S, Lee CJ, Maeng S, Kim TS, Park JH. Prolonged stimulation with low-intensity ultrasound induces delayed increases in spontaneous hippocampal culture spiking activity. J Neurosci Res 2016; 95:885-896. [PMID: 27465511 DOI: 10.1002/jnr.23845] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Revised: 06/03/2016] [Accepted: 07/03/2016] [Indexed: 11/07/2022]
Abstract
Ultrasound is a promising neural stimulation modality, but an incomplete understanding of its range and mechanism of effect limits its therapeutic application. We investigated the modulation of spontaneous hippocampal spike activity by ultrasound at a lower acoustic intensity and longer time scale than has been previously attempted, hypothesizing that spiking would change conditionally upon the availability of glutamate receptors. Using a 60-channel multielectrode array (MEA), we measured spontaneous spiking across organotypic rat hippocampal slice cultures (N = 28) for 3 min each before, during, and after stimulation with low-intensity unfocused pulsed or sham ultrasound (spatial-peak pulse average intensity 780 μW/cm2 ) preperfused with artificial cerebrospinal fluid, 300 μM kynurenic acid (KA), or 0.5 μM tetrodotoxin (TTX) at 3 ml/min. Spike rates were normalized and compared across stimulation type and period, subregion, threshold level, and/or perfusion condition using repeated-measures ANOVA and generalized linear mixed models. Normalized 3-min spike counts for large but not midsized, small, or total spikes increased after but not during ultrasound relative to sham stimulation. This result was recapitulated in subregions CA1 and dentate gyrus and replicated in a separate experiment for all spike size groups in slices pretreated with aCSF but not KA or TTX. Increases in normalized 18-sec total, midsized, and large spike counts peaked predominantly 1.5 min following ultrasound stimulation. Our low-intensity ultrasound setup exerted delayed glutamate receptor-dependent, amplitude- and possibly region-specific influences on spontaneous spike rates across the hippocampus, expanding the range of known parameters at which ultrasound may be used for neural activity modulation. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Hyun-Bum Kim
- Department of East-West Medical Science, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Republic of Korea
| | - Kelley M Swanberg
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Republic of Korea
| | - Hee-Sok Han
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Jung-Chae Kim
- Biometrics Team, CTO Future IT Laboratory, LG Electronics Umyeon R&D Campus, Seocho-gu, Republic of Korea
| | - Jun-Woo Kim
- Division of Polar Logistics, Korea Polar Research Institute, Incheon, Republic of Korea
| | - Sungon Lee
- School of Electrical Engineering, Hanyang University, Ansan, Republic of Korea
| | - C Justin Lee
- Center for Neuroscience and Functional Connectomics, Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Sungho Maeng
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Republic of Korea
| | - Tae-Seong Kim
- Department of Biomedical Engineering, Kyung Hee University, Yongin, Republic of Korea
| | - Ji-Ho Park
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Republic of Korea
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Moghaddam A, Yildirim TM, Westhauser F, Danner W, Swing T, Bruckner T, Biglari B. Low intensity pulsed ultrasound in the treatment of long bone nonunions: Evaluation of cytokine expression as a tool for objectifying nonunion therapy. J Orthop 2016; 13:306-12. [PMID: 27408510 DOI: 10.1016/j.jor.2016.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 06/17/2016] [Accepted: 06/27/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Nonunion is one of the most common complications in bone healing. After several clinical studies, the effect of low intensity pulsed ultrasound (LIPUS) in the treatment of nonunions remains unclear because of the difficulty in evaluating its effect on bone healing. In former studies, the analysis of serum cytokine expression patterns over time has proven to be an objective method for showing the bone healing process and evaluating nonunion therapies. This study evaluates LIPUS as a treatment option for patients with nonunions based on the analysis of serum cytokine expression. METHODS In this prospective, single institution study, venous blood samples from 23 patients were taken from October 2012 to October 2013 before starting LIPUS therapy and at the end of week 1 and 2 and after 1, 2, and 3 months. Patients attended clinical and radiological follow-up examinations at the same intervals. After treating all patients according to the LIPUS therapy protocol, we divided them into two groups: Group 1 consisted of patients with healing at the nonunion site, and Group 2 consisted of patients with failed nonunion therapy. We measured transforming growth factor-β1 (TGF-β1), platelet-derived growth factor (PDGF), and basic fibroblastic growth factor (bFGF) at all time-points. RESULTS The TGF-β1 serum concentration increased from the pre-treatment value to 1 week within the unsuccessful group. Otherwise, no significant differences between groups in measured cytokines during LIPUS therapy could be detected. CONCLUSION Our findings suggest that LIPUS does not lead to a significant increase in cytokine levels in patients with nonunions. It is likely that "successful" treatment can be attributed to spontaneous healing. Our results suggest that LIPUS is not a proper treatment for long bone nonunions.
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Affiliation(s)
- Arash Moghaddam
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118 Heidelberg, Baden-Württemberg, Germany
| | - Timur Mert Yildirim
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118 Heidelberg, Baden-Württemberg, Germany
| | - Fabian Westhauser
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118 Heidelberg, Baden-Württemberg, Germany
| | - Wolfgang Danner
- BG Trauma Centre Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071 Ludwigshafen, Rheinland-Pfalz, Germany
| | - Tyler Swing
- HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstraße 200a, 69118 Heidelberg, Baden-Württemberg, Germany
| | - Thomas Bruckner
- Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 305, 69120 Heidelberg, Baden-Württemberg, Germany
| | - Bahram Biglari
- BG Trauma Centre Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071 Ludwigshafen, Rheinland-Pfalz, Germany
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Rodríguez-Carballo E, Gámez B, Ventura F. p38 MAPK Signaling in Osteoblast Differentiation. Front Cell Dev Biol 2016; 4:40. [PMID: 27200351 PMCID: PMC4858538 DOI: 10.3389/fcell.2016.00040] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 04/21/2016] [Indexed: 12/14/2022] Open
Abstract
The skeleton is a highly dynamic tissue whose structure relies on the balance between bone deposition and resorption. This equilibrium, which depends on osteoblast and osteoclast functions, is controlled by multiple factors that can be modulated post-translationally. Some of the modulators are Mitogen-activated kinases (MAPKs), whose role has been studied in vivo and in vitro. p38-MAPK modifies the transactivation ability of some key transcription factors in chondrocytes, osteoblasts and osteoclasts, which affects their differentiation and function. Several commercially available inhibitors have helped to determine p38 action on these processes. Although it is frequently mentioned in the literature, this chemical approach is not always as accurate as it should be. Conditional knockouts are a useful genetic tool that could unravel the role of p38 in shaping the skeleton. In this review, we will summarize the state of the art on p38 activity during osteoblast differentiation and function, and emphasize the triggers of this MAPK.
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Affiliation(s)
| | - Beatriz Gámez
- Departament de Ciències Fisiològiques II, Universitat de Barcelona and IDIBELL, L'Hospitalet de Llobregat Barcelona, Spain
| | - Francesc Ventura
- Departament de Ciències Fisiològiques II, Universitat de Barcelona and IDIBELL, L'Hospitalet de Llobregat Barcelona, Spain
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Padilla F, Puts R, Vico L, Guignandon A, Raum K. Stimulation of Bone Repair with Ultrasound. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 880:385-427. [PMID: 26486349 DOI: 10.1007/978-3-319-22536-4_21] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This chapter reviews the different options available for the use of ultrasound in the enhancement of fracture healing or in the reactivation of a failed healing process: LIPUS, shock waves and ultrasound-mediated delivery of bioactive molecules, such as growth factors or plasmids. The main emphasis is on LIPUS, or Low Intensity Pulsed Ultrasound, the most widespread and studied technique. LIPUS has pronounced bioeffects on tissue regeneration, while employing intensities within a diagnostic range. The biological response to LIPUS is complex as the response of numerous cell types to this stimulus involves several pathways. Known to-date mechanotransduction pathways involved in cell responses include MAPK and other kinases signaling pathways, gap-junctional intercellular communication, up-regulation and clustering of integrins, involvement of the COX-2/PGE2 and iNOS/NO pathways, and activation of the ATI mechanoreceptor. Mechanisms at the origin of LIPUS biological effects remain intriguing, and analysis is hampered by the diversity of experimental systems used in-vitro. Data point to clear evidence that bioeffects can be modulated by direct and indirect mechanical effects, like acoustic radiation force, acoustic streaming, propagation of surface waves, heat, fluid-flow induced circulation and redistribution of nutrients, oxygen and signaling molecules. One of the future engineering challenge is therefore the design of dedicated experimental set-ups allowing control of these different mechanical phenomena, and to relate them to biological responses. Then, the derivation of an 'acoustic dose' and the cross-calibration of the different experimental systems will be possible. Despite this imperfect knowledge of LIPUS biophysics, the clinical evidence, although most often of low quality, speaks in favor of the clinical use of LIPUS, when the economics of nonunion and the absence of toxicity of this ultrasound technology are taken into account.
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Affiliation(s)
| | - Regina Puts
- Berlin-Brandenburg School for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Föhrerstr. 15, 13353, Berlin, Germany
| | - Laurence Vico
- Inserm U1059 Lab Biologie intégrée du Tissu Osseux, Université de Saint-Etienne, St-Etienne, 42023, France
| | - Alain Guignandon
- Inserm U1059 Lab Biologie intégrée du Tissu Osseux, Université de Saint-Etienne, St-Etienne, 42023, France
| | - Kay Raum
- Berlin-Brandenburg School for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Föhrerstr. 15, 13353, Berlin, Germany
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Low-Intensity Pulsed Ultrasound Improves the Functional Properties of Cardiac Mesoangioblasts. Stem Cell Rev Rep 2015. [DOI: 10.1007/s12015-015-9608-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Low-intensity pulsed ultrasound in dentofacial tissue engineering. Ann Biomed Eng 2015; 43:871-86. [PMID: 25672801 DOI: 10.1007/s10439-015-1274-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 02/04/2015] [Indexed: 02/04/2023]
Abstract
Oral and maxillofacial diseases affect millions of people worldwide and hence tissue engineering can be considered an interesting and clinically relevant approach to regenerate orofacial tissues after being affected by different diseases. Among several innovations for tissue regeneration, low-intensity pulsed ultrasound (LIPUS) has been used extensively in medicine as a therapeutic, operative, and diagnostic tool. LIPUS is accepted to promote bone fracture repair and regeneration. Furthermore, the effect of LIPUS on soft tissues regeneration has been paid much attention, and many studies have performed to evaluate the potential use of LIPUS to tissue engineering soft tissues. The present article provides an overview about the status of LIPUS stimulation as a tool to be used to enhance regeneration/tissue engineering. This review consists of five parts. Part 1 is a brief introduction of the acoustic description of LIPUS and mechanical action. In Part 2, biological problems in dentofacial tissue engineering are proposed. Part 3 explores biologic mechanisms of LIPUS to cells and tissues in living body. In Part 4, the effectiveness of LIPUS on cell metabolism and tissue regeneration in dentistry are summarized. Finally, Part 5 relates the possibility of clinical application of LIPUS in orthodontics. The present review brings out better understanding of the bioeffect of LIPUS therapy on orofacial tissues which is essential to the successful integration of management remedies for tissue regeneration/engineering. To develop an evidence-based approach to clinical management and treatment of orofacial degenerative diseases using LIPUS, we would like to be in full pursuit of LIPUS biotherapy. Still, there are many challenges for this relatively new strategy, but the up to date achievements using it promises to go far beyond the present possibilities.
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Wei FY, Leung KS, Li G, Qin J, Chow SKH, Huang S, Sun MH, Qin L, Cheung WH. Low intensity pulsed ultrasound enhanced mesenchymal stem cell recruitment through stromal derived factor-1 signaling in fracture healing. PLoS One 2014; 9:e106722. [PMID: 25181476 PMCID: PMC4152330 DOI: 10.1371/journal.pone.0106722] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 08/02/2014] [Indexed: 01/01/2023] Open
Abstract
Low intensity pulsed ultrasound (LIPUS) has been proven effective in promoting fracture healing but the underlying mechanisms are not fully depicted. We examined the effect of LIPUS on the recruitment of mesenchymal stem cells (MSCs) and the pivotal role of stromal cell-derived factor-1/C-X-C chemokine receptor type 4 (SDF-1/CXCR4) pathway in response to LIPUS stimulation, which are essential factors in bone fracture healing. For in vitro study, isolated rat MSCs were divided into control or LIPUS group. LIPUS treatment was given 20 minutes/day at 37 °C for 3 days. Control group received sham LIPUS treatment. After treatment, intracellular CXCR4 mRNA, SDF-1 mRNA and secreted SDF-1 protein levels were quantified, and MSCs migration was evaluated with or without blocking SDF-1/CXCR4 pathway by AMD3100. For in vivo study, fractured 8-week-old young rats received intracardiac administration of MSCs were assigned to LIPUS treatment, LIPUS+AMD3100 treatment or vehicle control group. The migration of transplanted MSC to the fracture site was investigated by ex vivo fluorescent imaging. SDF-1 protein levels at fracture site and in serum were examined. Fracture healing parameters, including callus morphology, micro-architecture of the callus and biomechanical properties of the healing bone were investigated. The in vitro results showed that LIPUS upregulated SDF-1 and CXCR4 expressions in MSCs, and elevated SDF-1 protein level in the conditioned medium. MSCs migration was promoted by LIPUS and partially inhibited by AMD3100. In vivo study demonstrated that LIPUS promoted MSCs migration to the fracture site, which was associated with an increase of local and serum SDF-1 level, the changes in callus formation, and the improvement of callus microarchitecture and mechanical properties; whereas the blockade of SDF-1/CXCR4 signaling attenuated the LIPUS effects on the fractured bones. These results suggested SDF-1 mediated MSCs migration might be one of the crucial mechanisms through which LIPUS exerted influence on fracture healing.
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Affiliation(s)
- Fang-Yuan Wei
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Kwok-Sui Leung
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Translational Medicine Research & Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Gang Li
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Jianghui Qin
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Simon Kwoon-Ho Chow
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Shuo Huang
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Ming-Hui Sun
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Ling Qin
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Translational Medicine Research & Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Wing-Hoi Cheung
- Department of Orthopaedics and Traumatology, Clinical Sciences Building, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Translational Medicine Research & Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Sato M, Nagata K, Kuroda S, Horiuchi S, Nakamura T, Karima M, Inubushi T, Tanaka E. Low-intensity pulsed ultrasound activates integrin-mediated mechanotransduction pathway in synovial cells. Ann Biomed Eng 2014; 42:2156-63. [PMID: 25096496 DOI: 10.1007/s10439-014-1081-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 07/30/2014] [Indexed: 01/15/2023]
Abstract
Low-intensity pulsed ultrasound (LIPUS) suppresses synovial hyperplasia and synovial cell proliferation characterized for rheumatoid arthritis, but the molecular mechanisms remain unknown. The purpose of this study was to examine the mechanotransduction pathway via the integrin/mitogen-activated protein kinase (MAPK) pathway in LIPUS exposure on the synovial membrane cells. Rabbit knee synovial membrane cell line, HIG-82, was cultured with or without FAK phosphorylation inhibitor, PF-573228. One hour after stimulation with PF-573228, the cells exposed to LIPUS for 20 min or sham exposure. A possible integrin/MAPK pathway was examined by immunofluorescence and Western blotting analysis with antibodies targeting specific phosphorylation sites on intracellular signaling proteins. LIPUS exposure increased phosphorylation of FAK, JNK, ERK, and p38, but the phosphorylation was inhibited by PF-573228. In conclusion, LIPUS exposure might be involved in cell apoptosis and survival of synovial membrane cells via integrin/FAK/MAPK pathway.
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Affiliation(s)
- Minami Sato
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Health Bioscience, Tokushima University Graduate School, 3-18-15 Kuramoto-Cho, Tokushima, 770-8504, Japan
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Padilla F, Puts R, Vico L, Raum K. Stimulation of bone repair with ultrasound: a review of the possible mechanic effects. ULTRASONICS 2014; 54:1125-45. [PMID: 24507669 DOI: 10.1016/j.ultras.2014.01.004] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 12/20/2013] [Accepted: 01/07/2014] [Indexed: 05/15/2023]
Abstract
In vivo and in vitro studies have demonstrated the positive role that ultrasound can play in the enhancement of fracture healing or in the reactivation of a failed healing process. We review the several options available for the use of ultrasound in this context, either to induce a direct physical effect (LIPUS, shock waves), to deliver bioactive molecules such as growth factors, or to transfect cells with osteogenic plasmids; with a main focus on LIPUS (or Low Intensity Pulsed Ultrasound) as it is the most widespread and studied technique. The biological response to LIPUS is complex as numerous cell types respond to this stimulus involving several pathways. Known to-date mechanotransduction pathways involved in cell responses include MAPK and other kinases signaling pathways, gap-junctional intercellular communication, up-regulation and clustering of integrins, involvement of the COX-2/PGE2, iNOS/NO pathways and activation of ATI mechanoreceptor. The mechanisms by which ultrasound can trigger these effects remain intriguing. Possible mechanisms include direct and indirect mechanical effects like acoustic radiation force, acoustic streaming, and propagation of surface waves, fluid-flow induced circulation and redistribution of nutrients, oxygen and signaling molecules. Effects caused by the transformation of acoustic wave energy into heat can usually be neglected, but heating of the transducer may have a potential impact on the stimulation in some in-vitro systems, depending on the coupling conditions. Cavitation cannot occur at the pressure levels delivered by LIPUS. In-vitro studies, although not appropriate to identify the overall biological effects, are of great interest to study specific mechanisms of action. The diversity of current experimental set-ups however renders this analysis very complex, as phenomena such as transducer heating, inhomogeneities of the sound intensity in the near field, resonances in the transmission and reflection through the culture dish walls and the formation of standing waves will greatly affect the local type and amplitude of the stimulus exerted on the cells. A future engineering challenge is therefore the design of dedicated experimental set-ups, in which the different mechanical phenomena induced by ultrasound can be controlled. This is a prerequisite to evaluate the biological effects of the different phenomena with respect to particular parameters, like intensity, frequency, or duty cycle. By relating the variations of these parameters to the induced physical effects and to the biological responses, it will become possible to derive an 'acoustic dose' and propose a quantification and cross-calibration of the different experimental systems. Improvements in bone healing management will probably also come from a combination of ultrasound with a 'biologic' components, e.g. growth factors, scaffolds, gene therapies, or drug delivery vehicles, the effects of which being potentiated by the ultrasound.
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Affiliation(s)
- Frédéric Padilla
- Inserm, U1032, LabTau, Lyon F-69003, France; Université de Lyon, Lyon F-69003, France.
| | - Regina Puts
- Julius Wolff Institut & Berlin-Brandenburg School for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Germany
| | - Laurence Vico
- Inserm U1059 Lab Biologie intégrée du Tissu Osseux, Université de Lyon, St-Etienne F-42023, France
| | - Kay Raum
- Julius Wolff Institut & Berlin-Brandenburg School for Regenerative Therapies, Charité - Universitätsmedizin Berlin, Germany
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Yang Z, Ren L, Deng F, Wang Z, Song J. Low-intensity pulsed ultrasound induces osteogenic differentiation of human periodontal ligament cells through activation of bone morphogenetic protein-smad signaling. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2014; 33:865-873. [PMID: 24764342 DOI: 10.7863/ultra.33.5.865] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES Low-intensity pulsed ultrasound (US) can accelerate fracture healing and osteogenic differentiation. The aim of this study was to investigate the osteogenic effect of low-intensity pulsed US on human periodontal ligament cells and to determine whether bone morphogenetic protein (BMP)-Smad signaling was involved. METHODS Human periodontal ligament cells were exposed to low-intensity pulsed US at a frequency of 1.5 MHz and intensity of 90 mW/cm(2) for 20 min/d. Osteogenic differentiation was determined by assaying alkaline phosphatase (ALP) and calcium deposition. Expression of BMP-2, BMP-6, and BMP-9 was detected by real-time polymerase chain reaction analysis. Phosphorylated Smad was detected by western blotting; Smad in the cells was labeled by an immunofluorescent antibody and observed by laser-scanning confocal microscopy. RESULTS The optical density of ALP stimulated by US at 1.5 MHz and 90 mW/cm(2) for 20 min/d was significantly higher than in other groups (P < .01); therefore, this dosage was considered optimal for promoting osteogenic differentiation. After 13 days of US exposure, ALP increased gradually after 5 days, peaked at 11 days, and decreased at 13 days, with a significant difference compared with the control group (P < .05). Osteocalcin production increased from 9 to 13 days and peaked at 15 days, with a significant difference compared with the control group (P < .05). BMP-2 and BMP-6 increased dynamically after exposure for 13 days. BMP-2 increased 6.07-fold at 3 days, 6.39-fold at 11 days, and 5.97-fold at 13 days. BMP-6 expression increased 6.82-fold at 1 day and 51.5-fold at 3 days and decreased thereafter. BMP-9 was not expressed. Phospho-Smad1/5/8 expression was significantly increased after exposure (P< .05) and transferred from the cytoplasm into the nuclei. CONCLUSIONS Low-intensity pulsed US effectively induced osteogenic differentiation of human periodontal ligament cells, and the BMP-Smad signaling pathway was involved in the mechanism.
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Affiliation(s)
- Zun Yang
- Affiliated Hospital of Stomatology, Chongqing Medical University, 426 Songshi North St, Yubei District, 401147 Chongqing, China.
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Kusuyama J, Bandow K, Shamoto M, Kakimoto K, Ohnishi T, Matsuguchi T. Low intensity pulsed ultrasound (LIPUS) influences the multilineage differentiation of mesenchymal stem and progenitor cell lines through ROCK-Cot/Tpl2-MEK-ERK signaling pathway. J Biol Chem 2014; 289:10330-10344. [PMID: 24550383 DOI: 10.1074/jbc.m113.546382] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are pluripotent cells that can differentiate into multilineage cell types, including adipocytes and osteoblasts. Mechanical stimulus is one of the crucial factors in regulating MSC differentiation. However, it remains unknown how mechanical stimulus affects the balance between adipogenesis and osteogenesis. Low intensity pulsed ultrasound (LIPUS) therapy is a clinical application of mechanical stimulus and facilitates bone fracture healing. Here, we applied LIPUS to adipogenic progenitor cell and MSC lines to analyze how multilineage cell differentiation was affected. We found that LIPUS suppressed adipogenic differentiation of both cell types, represented by impaired lipid droplet appearance and decreased gene expression of peroxisome proliferator-activated receptor γ2 (Pparg2) and fatty acid-binding protein 4 (Fabp4). LIPUS also down-regulated the phosphorylation level of peroxisome proliferator-activated receptor γ2 protein, inhibiting its transcriptional activity. In contrast, LIPUS promoted osteogenic differentiation of the MSC line, characterized by increased cell calcification as well as inductions of runt-related transcription factor 2 (Runx2) and Osteocalcin mRNAs. LIPUS induced phosphorylation of cancer Osaka thyroid oncogene/tumor progression locus 2 (Cot/Tpl2) kinase, which was essential for the phosphorylation of mitogen-activated kinase kinase 1 (MEK1) and p44/p42 extracellular signal-regulated kinases (ERKs). Notably, effects of LIPUS on both adipogenesis and osteogenesis were prevented by a Cot/Tpl2-specific inhibitor. Furthermore, effects of LIPUS on MSC differentiation as well as Cot/Tpl2 phosphorylation were attenuated by the inhibition of Rho-associated kinase. Taken together, these results indicate that mechanical stimulus with LIPUS suppresses adipogenesis and promotes osteogenesis of MSCs through Rho-associated kinase-Cot/Tpl2-MEK-ERK signaling pathway.
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Affiliation(s)
- Joji Kusuyama
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Kenjiro Bandow
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Mitsuo Shamoto
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Kyoko Kakimoto
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Tomokazu Ohnishi
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Tetsuya Matsuguchi
- Department of Biochemistry and Molecular Dentistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan.
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Nakao J, Fujii Y, Kusuyama J, Bandow K, Kakimoto K, Ohnishi T, Matsuguchi T. Low-intensity pulsed ultrasound (LIPUS) inhibits LPS-induced inflammatory responses of osteoblasts through TLR4-MyD88 dissociation. Bone 2014; 58:17-25. [PMID: 24091132 DOI: 10.1016/j.bone.2013.09.018] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 09/12/2013] [Accepted: 09/16/2013] [Indexed: 11/24/2022]
Abstract
Previous reports have shown that osteoblasts are mechano-sensitive. Low-intensity pulsed ultrasound (LIPUS) induces osteoblast differentiation and is an established therapy for bone fracture. Here we have examined how LIPUS affects inflammatory responses of osteoblasts to LPS. LPS rapidly induced mRNA expression of several chemokines including CCL2, CXCL1, and CXCL10 in both mouse osteoblast cell line and calvaria-derived osteoblasts. Simultaneous treatment by LIPUS significantly inhibited mRNA induction of CXCL1 and CXCL10 by LPS. LPS-induced phosphorylation of ERKs, p38 kinases, MEK1/2, MKK3/6, IKKs, TBK1, and Akt was decreased in LIPUS-treated osteoblasts. Furthermore, LIPUS inhibited the transcriptional activation of NF-κB responsive element and Interferon-sensitive response element (ISRE) by LPS. In a transient transfection experiment, LIPUS significantly inhibited TLR4-MyD88 complex formation. Thus LIPUS exerts anti-inflammatory effects on LPS-stimulated osteoblasts by inhibiting TLR4 signal transduction.
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Affiliation(s)
- Juna Nakao
- Department of Oral Biochemistry, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
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Sugaya H, Mishima H, Aoto K, Li M, Shimizu Y, Yoshioka T, Sakai S, Akaogi H, Ochiai N, Yamazaki M. Percutaneous autologous concentrated bone marrow grafting in the treatment for nonunion. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2013; 24:671-8. [PMID: 24275891 DOI: 10.1007/s00590-013-1369-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Accepted: 11/10/2013] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to evaluate the clinical and radiographic treatment effects of percutaneous autologous concentrated bone marrow grafting in nonunion cases and to evaluate the effectiveness of this grafting procedure. We enrolled 17 cases those had atrophic changes due to continuous nonunion for over 9 months after injury and had undergone low-intensity pulsed ultrasound treatment for more than 3 months. The site of nonunion was the femur in 10 cases, the tibia in 5 cases, the humerus in 1 case, and the ulna in 1 case. They underwent percutaneous autologous concentrated bone marrow grafting and continued low-intensity pulsed ultrasound stimulation treatment after grafting. Patients were evaluated using the visual analogue scale for pain at immediately before the procedure, 3, 6, and 12 months after grafting. Plain radiographs of the affected site were taken and evaluated about the healing of the nonunion site at each clinical evaluation. As quantitative assessment, CT scans were undertaken before the procedure and 6 months after grafting. The visual analogue scale pain score was reduced consistently after grafting in all patients. About the healing at the nonunion site, 11 and 13 cases of bone union were observed at 6 and 12 months after grafting. The mean volume of callus formation based on CT images was 4,147 (262-27,392) mm3 total between grafting and 6 months. Percutaneous autologous concentrated bone marrow grafting is an effective procedure for the treatment of patients with nonunion.
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Affiliation(s)
- Hisashi Sugaya
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan
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