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Kelly MM, Sharma K, Wright CS, Yi X, Reyes Fernandez PC, Gegg AT, Gorrell TA, Noonan ML, Baghdady A, Sieger JA, Dolphin AC, Warden SJ, Deosthale P, Plotkin LI, Sankar U, Hum JM, Robling AG, Farach-Carson MC, Thompson WR. Loss of the auxiliary α 2δ 1 voltage-sensitive calcium channel subunit impairs bone formation and anabolic responses to mechanical loading. JBMR Plus 2024; 8:ziad008. [PMID: 38505532 PMCID: PMC10945727 DOI: 10.1093/jbmrpl/ziad008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/31/2023] [Accepted: 11/27/2023] [Indexed: 03/21/2024] Open
Abstract
Voltage-sensitive calcium channels (VSCCs) influence bone structure and function, including anabolic responses to mechanical loading. While the pore-forming (α1) subunit of VSCCs allows Ca2+ influx, auxiliary subunits regulate the biophysical properties of the pore. The α2δ1 subunit influences gating kinetics of the α1 pore and enables mechanically induced signaling in osteocytes; however, the skeletal function of α2δ1 in vivo remains unknown. In this work, we examined the skeletal consequences of deleting Cacna2d1, the gene encoding α2δ1. Dual-energy X-ray absorptiometry and microcomputed tomography imaging demonstrated that deletion of α2δ1 diminished bone mineral content and density in both male and female C57BL/6 mice. Structural differences manifested in both trabecular and cortical bone for males, while the absence of α2δ1 affected only cortical bone in female mice. Deletion of α2δ1 impaired skeletal mechanical properties in both sexes, as measured by three-point bending to failure. While no changes in osteoblast number or activity were found for either sex, male mice displayed a significant increase in osteoclast number, accompanied by increased eroded bone surface and upregulation of genes that regulate osteoclast differentiation. Deletion of α2δ1 also rendered the skeleton insensitive to exogenous mechanical loading in males. While previous work demonstrates that VSCCs are essential for anabolic responses to mechanical loading, the mechanism by which these channels sense and respond to force remained unclear. Our data demonstrate that the α2δ1 auxiliary VSCC subunit functions to maintain baseline bone mass and strength through regulation of osteoclast activity and also provides skeletal mechanotransduction in male mice. These data reveal a molecular player in our understanding of the mechanisms by which VSCCs influence skeletal adaptation.
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Affiliation(s)
- Madison M Kelly
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Karan Sharma
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Christian S Wright
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Xin Yi
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Perla C Reyes Fernandez
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Aaron T Gegg
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
| | - Taylor A Gorrell
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
| | - Megan L Noonan
- Department of Medical and Molecular Genetics, Indiana University, Indianapolis, IN 46202, United States
| | - Ahmed Baghdady
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Jacob A Sieger
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
| | - Annette C Dolphin
- Department of Neuroscience, Physiology and Pharmacology, University College of London, Gower Street, London WC1E 6BT, United Kingdom
| | - Stuart J Warden
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne Victoria 3086, DX 211319, Australia
| | - Padmini Deosthale
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Lilian I Plotkin
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Uma Sankar
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Julia M Hum
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
| | - Alexander G Robling
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
| | - Mary C Farach-Carson
- Department of Diagnostic & Biomedical Sciences, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX 77054, United States
| | - William R Thompson
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN 46202, United States
- College of Osteopathic Medicine, Marian University, Indianapolis, IN 46222, United States
- Indiana Center for Musculoskeletal Health, Indiana University, Indianapolis, IN 46202, United States
- Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, IN 46202, United States
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Rieder F, Wiesinger HP, Herfert J, Lampl K, Hecht S, Niebauer J, Maffulli N, Kösters A, Müller E, Seynnes OR. Whole body vibration for chronic patellar tendinopathy: A randomized equivalence trial. Front Physiol 2022; 13:1017931. [PMID: 36338477 PMCID: PMC9633993 DOI: 10.3389/fphys.2022.1017931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/06/2022] [Indexed: 02/02/2023] Open
Abstract
Purpose: Whole body vibration (WBV) triggers anabolic responses in various tissues, including tendons, without requiring high force production. In this waitlist-controlled equivalence trial, we tested its clinical effectiveness as an alternative treatment for patellar tendinopathy against conventional heavy slow resistance training (HSR). Methods: Thirty-nine patients were randomized to either 3 months of WBV training (n = 13), HSR training (n = 11), or a waitlist control (WLC) group (n = 15). In a partly cross-over design, 14 patients of the WLC group were redistributed to one of the two intervention groups (5 in WBV, 9 in HSR). Pre- and post-intervention testing included pain assessments (VAS), functional limitations (VISA-P), knee extension strength and tendon morphological, mechanical and material properties. Follow-up measurements (VAS, VISA-P) were performed in the WBV and HSR groups 6 months after the intervention. Results: Comparisons with the WLC group revealed significant improvements in VISA-P and VAS scores after HSR (41%, p = 003; 54%, p = 0.005) and WBV (22%, p = 0.022; 56%, p = 0.031) training. These improvements continued until follow-up (HSR: 43%, 56%; WBV: 24%, 37%). Pre-post improvements in VAS scores were equivalent between WBV and HSR groups but inconclusive for the VISA-P score and all pre-test to follow up comparisons. The mid-tendon cross-sectional area was significantly reduced after WBV (-5.7%, p = 0.004) and HSR (-3.0%, p = 0.004) training compared to WLC although the equivalence test between interventions was inconclusive. Conclusion: Whole body vibration improved symptoms typically associated with patellar tendinopathy. This type of intervention is as effective as HSR against maximum pain, although equivalence could not be confirmed for other variables. The beneficial responses to WBV and HSR treatments persisted for 6 months after the end of the intervention. Clinical Trial Registration: https://www.drks.de/drks_web/setLocale_EN.do, identifier DRKS00011338.
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Affiliation(s)
- Florian Rieder
- Institute of Physical Medicine and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria,Department of Sport and Exercise Science, Paris-Lodron University Salzburg, Salzburg, Austria,*Correspondence: Florian Rieder,
| | - Hans-Peter Wiesinger
- Department of Sport and Exercise Science, Paris-Lodron University Salzburg, Salzburg, Austria
| | - Jürgen Herfert
- Institute of Physical Medicine and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria,Red Bull Athlete Performance Center, Thalgau, Austria
| | - Katrin Lampl
- Institute of Physical Medicine and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Stefan Hecht
- Institute of Radiology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Josef Niebauer
- Institute of Physical Medicine and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria,Institute of Sports Medicine, Prevention and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Nicola Maffulli
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Salerno, Italy,Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, Queen Mary University of London, London, United Kingdom,School of Pharmacy and Bioengineering, Keele University School of Medicine, Staffordshire, United Kingdom
| | - Alexander Kösters
- Department of Sport and Exercise Science, Paris-Lodron University Salzburg, Salzburg, Austria
| | - Erich Müller
- Department of Sport and Exercise Science, Paris-Lodron University Salzburg, Salzburg, Austria
| | - Olivier R. Seynnes
- Department of Physical Performance, Norwegian School of Sport Science, Oslo, Norway
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Influence of 40 Hz and 100 Hz Vibration on SH-SY5Y Cells Growth and Differentiation-A Preliminary Study. Molecules 2022; 27:molecules27103337. [PMID: 35630814 PMCID: PMC9143216 DOI: 10.3390/molecules27103337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 02/05/2023] Open
Abstract
(1) Background: A novel bioreactor platform of neuronal cell cultures using low-magnitude, low-frequency (LMLF) vibrational stimulation was designed to discover vibration influence and mimic the dynamic environment of the in vivo state. To better understand the impact of 40 Hz and 100 Hz vibration on cell differentiation, we join biotechnology and advanced medical technology to design the nano-vibration system. The influence of vibration on the development of nervous tissue on the selected cell line SH-SY5Y (experimental research model in Alzheimer’s and Parkinson’s) was investigated. (2) Methods: The vibration stimulation of cell differentiation and elongation of their neuritis were monitored. We measured how vibrations affect the morphology and differentiation of nerve cells in vitro. (3) Results: The highest average length of neurites was observed in response to the 40 Hz vibration on the collagen surface in the differentiating medium, but cells response did not increase with vibration frequency. Also, vibrations at a frequency of 40 Hz or 100 Hz did not affect the average density of neurites. 100 Hz vibration increased the neurites density significantly with time for cultures on collagen and non-collagen surfaces. The exposure of neuronal cells to 40 Hz and 100 Hz vibration enhanced cell differentiation. The 40 Hz vibration has the best impact on neuronal-like cell growth and differentiation. (4) Conclusions: The data demonstrated that exposure to neuronal cells to 40 Hz and 100 Hz vibration enhanced cell differentiation and proliferation. This positive impact of vibration can be used in tissue engineering and regenerative medicine. It is planned to optimize the processes and study its molecular mechanisms concerning carrying out the research.
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Generation of two multipotent mesenchymal progenitor cell lines capable of osteogenic, mature osteocyte, adipogenic, and chondrogenic differentiation. Sci Rep 2021; 11:22593. [PMID: 34799645 PMCID: PMC8605002 DOI: 10.1038/s41598-021-02060-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 11/09/2021] [Indexed: 01/04/2023] Open
Abstract
Mesenchymal progenitors differentiate into several tissues including bone, cartilage, and adipose. Targeting these cells in vivo is challenging, making mesenchymal progenitor cell lines valuable tools to study tissue development. Mesenchymal stem cells (MSCs) can be isolated from humans and animals; however, obtaining homogenous, responsive cells in a reproducible fashion is challenging. As such, we developed two mesenchymal progenitor cell (MPC) lines, MPC1 and MPC2, generated from bone marrow of male C57BL/6 mice. These cells were immortalized using the temperature sensitive large T-antigen, allowing for thermal control of proliferation and differentiation. Both MPC1 and MPC2 cells are capable of osteogenic, adipogenic, and chondrogenic differentiation. Under osteogenic conditions, both lines formed mineralized nodules, and stained for alizarin red and alkaline phosphatase, while expressing osteogenic genes including Sost, Fgf23, and Dmp1. Sost and Dmp1 mRNA levels were drastically reduced with addition of parathyroid hormone, thus recapitulating in vivo responses. MPC cells secreted intact (iFGF23) and C-terminal (cFGF23) forms of the endocrine hormone FGF23, which was upregulated by 1,25 dihydroxy vitamin D (1,25D). Both lines also rapidly entered the adipogenic lineage, expressing adipose markers after 4 days in adipogenic media. MPC cells were also capable of chondrogenic differentiation, displaying increased expression of cartilaginous genes including aggrecan, Sox9, and Comp. With the ability to differentiate into multiple mesenchymal lineages and mimic in vivo responses of key regulatory genes/proteins, MPC cells are a valuable model to study factors that regulate mesenchymal lineage allocation as well as the mechanisms that dictate transcription, protein modification, and secretion of these factors.
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OH JUHWAN, YU MI, KWON TAEKYU. ACUTE EFFECTS OF SLING EXERCISE RECOVERY WITH WHOLE-BODY VIBRATION RESTING MUSCLE FUNCTION AND BLOOD OF LACTATE. J MECH MED BIOL 2021. [DOI: 10.1142/s0219519421400510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to investigate an effective recovery method on muscle function and blood of lactate level after maximal isotonic exercise. This study was conducted in 36 adult males. The group was divided into three groups. Sling therapy group (SG, [Formula: see text]), sling therapy group with whole body vibration continuous (SAVG, [Formula: see text]) and sling therapy group with whole body vibration in intermittent (SIVG, [Formula: see text]) were randomly composed. Sling exercise therapy using supine position and whole-body vibration of 10[Formula: see text]Hz, 5[Formula: see text]mm were performed. Lactate level and muscle function during the rest, fatigue and recovery period were measured and then maximal exercise using back extension was performed to induce fatigue. After 15[Formula: see text]min, sling with whole body vibration was conducted in two groups, respectively. Blood lactate was measured a few hours before and after of vibration. Also, muscle function between only sling exercise therapy condition, sling with whole body vibration condition in all time and sling with whole body vibration condition in intermittent time were analyzed. Lactate level was recorded by lactate measurement device. Isokinetic of lumber joint extension and flexion Peak torque/body weight, total work (J), average power (W) and acceleration time (m/s2) were measured using isokinetic dynamometer. The recovery method of sling with whole body vibration showed positive changes in physical characteristics. Isokinetic contraction of peak torque/body weight (N[Formula: see text]m), average power (Watts) and total work (J) were significantly increased in the recovery step for SIVG. Lactate level was significantly decreased for SIVG as compared with SG and SAVG. This study demonstrated that sling exercise therapy with intermittent time whole body vibration could provide a positive effect on the efficient recovery of muscle function and higher reduction of lactate after maximal isotonic exercise.
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Affiliation(s)
- JU-HWAN OH
- Department of Sport Science, Jeonbuk National University, Jeonju, Jeonbuk 54896, Korea
- Healthcare M.A.P, Innovation Startup Hub, Jeonju, Jeonbuk 54852, Korea
| | - MI YU
- Division of Biomedical Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Korea
| | - TAE-KYU KWON
- Division of Biomedical Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Korea
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Ye X, Gu Y, Bai Y, Xia S, Zhang Y, Lou Y, Zhu Y, Dai Y, Tsoi JKH, Wang S. Does Low-Magnitude High-Frequency Vibration (LMHFV) Worth for Clinical Trial on Dental Implant? A Systematic Review and Meta-Analysis on Animal Studies. Front Bioeng Biotechnol 2021; 9:626892. [PMID: 33987172 PMCID: PMC8111077 DOI: 10.3389/fbioe.2021.626892] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/29/2021] [Indexed: 01/19/2023] Open
Abstract
Being as a non-pharmacological medical intervention, low-magnitude high-frequency vibration (LMHFV) has shown a positive effect on bone induction and remodeling for various muscle diseases in animal studies, among which dental implants osteointegration were reported to be improved as well. However, whether LMHFV can be clinically used in dental implant is still unknown. In this study, efficacy, parameters and side effects of LMHFV were analyzed via data before 15th July 2020, collecting from MEDLINE/PubMed, Embase, Ovid and Cochrane Library databases. In the screened 1,742 abstracts and 45 articles, 15 animal studies involving 972 implants were included. SYRCLE's tool was performed to assess the possible risk of bias for each study. The GRADE approach was applied to evaluate the quality of evidence. Random effects meta-analysis detected statistically significant in total BIC (P < 0.0001) and BV/TV (P = 0.001) upon loading LMHFV on implants. To conclude, LMHFV played an active role on BIC and BV/TV data according to the GRADE analysis results (medium and low quality of evidence). This might illustrate LMHFV to be a worthy way in improving osseointegration clinically, especially for osteoporosis. Systematic Review Registration:https://www.crd.york.ac.uk/PROSPERO, identifier: NCT02612389
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Affiliation(s)
- Xinjian Ye
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ying Gu
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yijing Bai
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Siqi Xia
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yujia Zhang
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuwei Lou
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuchi Zhu
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuwei Dai
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - James Kit-Hon Tsoi
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong
| | - Shuhua Wang
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China.,Hospital of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
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Wenger KH, Heringer D, Lloyd T, Johnson MS, DesJardins JD, Stanley SE, Remeniuk B, Szivek JA. Repair and remodeling of partial-weightbearing, uninstrumented long bone fracture model in mice treated with low intensity vibration therapy. Clin Biomech (Bristol, Avon) 2021; 81:105244. [PMID: 33341522 DOI: 10.1016/j.clinbiomech.2020.105244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND While vibration therapy has shown encouraging results across many fields of medicine in the last decade, its role as originally envisioned for bone health remains uncertain. Especially regarding its efficacy in promoting fracture healing, mixed and incomplete outcomes suggest a need to clarify its potential. In particular, the definitive effect of vibration, when isolated from the confounding mechanical inputs of gait and stabilizing instrumentation, remains largely unknown. METHODS Four cohorts of C57BL/6 male mice underwent single-leg, open fibula fracture. Vibration was applied at 0.3 g to two groups for 20 min/d. At 3 and 6 weeks, fibulae were harvested for microcomputed tomography and 3-point bending to failure. FINDINGS In bone volume and tissue volume, the groups at each healing time point were statistically not different. At 3 weeks, however, the ratio of bone-to-tissue volume was lower for the vibrated group than control. Likewise, while bone mineral density did not differ, tissue volume density was lowest with vibration. At 6 weeks, mean differences were nominal. Biomechanically, vibration consistently trended ahead of control in strength and stiffness, but did not achieve statistical significance. INTERPRETATION At this stage of therapeutic development, vibration therapy in isolation does not demonstrate a clear efficacy for bone healing, although further treatment permutations and translational uses remain open for investigation.
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Affiliation(s)
- Karl H Wenger
- Regencor LLC, Augusta, GA 30904, USA; Department of Clinical Investigation, Dwight D. Eisenhower Army Medical Center, Fort Gordon, GA 30905, USA.
| | - Diana Heringer
- College of Medicine, University of Arizona, Tucson, AZ 85724, USA.
| | | | - Maria S Johnson
- Small Animal Phenotyping Core Facility, University of Alabama at Birmingham, USA.
| | - John D DesJardins
- Department of Bioengineering, 301 Rhodes Building, Clemson, SC 29634, USA.
| | - Scott E Stanley
- Department of Bioengineering, 301 Rhodes Building, Clemson, SC 29634, USA.
| | - Bethany Remeniuk
- Department of Pharmacology, University of Arizona, Tucson, AZ 85724, USA.
| | - John A Szivek
- Department of Orthopedic Surgery, College of Medicine, University of Arizona, Tucson, AZ 85724, USA.
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Mechanical suppression of breast cancer cell invasion and paracrine signaling to osteoclasts requires nucleo-cytoskeletal connectivity. Bone Res 2020; 8:40. [PMID: 33298883 PMCID: PMC7673025 DOI: 10.1038/s41413-020-00111-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 06/29/2020] [Accepted: 07/21/2020] [Indexed: 01/10/2023] Open
Abstract
Exercise benefits the musculoskeletal system and reduces the effects of cancer. The effects of exercise are multifactorial, where metabolic changes and tissue adaptation influence outcomes. Mechanical signals, a principal component of exercise, are anabolic to the musculoskeletal system and restrict cancer progression. We examined the mechanisms through which cancer cells sense and respond to low-magnitude mechanical signals introduced in the form of vibration. Low-magnitude, high-frequency vibration was applied to human breast cancer cells in the form of low-intensity vibration (LIV). LIV decreased matrix invasion and impaired secretion of osteolytic factors PTHLH, IL-11, and RANKL. Furthermore, paracrine signals from mechanically stimulated cancer cells, reduced osteoclast differentiation and resorptive capacity. Disconnecting the nucleus by knockdown of SUN1 and SUN2 impaired LIV-mediated suppression of invasion and osteolytic factor secretion. LIV increased cell stiffness; an effect dependent on the LINC complex. These data show that mechanical vibration reduces the metastatic potential of human breast cancer cells, where the nucleus serves as a mechanosensory apparatus to alter cell structure and intercellular signaling.
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Taş S. The Effects of Vibration and Pressure Treatments in the Early Postoperative Period of Rhinoplasty. Aesthet Surg J 2020; 40:605-616. [PMID: 31407775 DOI: 10.1093/asj/sjz226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The early postoperative period can be distressing for the patients undergoing rhinoplasty since edema and ecchymosis are common complications. OBJECTIVES To analyze the effects of the vibration and pressure treatments in the early postoperative period of rhinoplasty. METHODS Sixty patients, who had undergone rhinoplasty, were randomized into 3 groups: group 1 (control group, n = 20) received classic nasal casting, group 2 (n = 20) received nasal cast with an elastic bandage to hold it on the face, and group 3 (n = 20) received vibration treatment in addition to that in group 2 following the rhinoplasty. They were evaluated preoperatively and postoperatively at 3 and 7 days in a prospective study. The postoperative edema and ecchymosis were scored by 2 independent surgeons. The postoperative pain was measured using the visual analog scale, and the necessity of anti-inflammatory medication (and the dose needed) and the cast comfort was questioned. The sebaceous activity of the nose skin was examined. A preoperative and postoperative seventh day sonographic study was performed to evaluate the tissue edema objectively. RESULTS The pressure treatment decreased the edema and ecchymosis significantly compared with the control group. The vibration treatment minimized edema, ecchymosis, sebaceous activity of the nose skin, pain score, and the need for anti-inflammatory medication, and increased the cast comfort significantly compared with the other groups (P < 0.0001). CONCLUSIONS Rapid regression of edema and ecchymosis may be achieved using the vibrating nasal cast technique that may minimize patient discomfort, pain, and sebaceous activity following rhinoplasty. LEVEL OF EVIDENCE: 1
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Kim D, Kwon S. Vibrational stress affects extracellular signal-regulated kinases activation and cytoskeleton structure in human keratinocytes. PLoS One 2020; 15:e0231174. [PMID: 32267880 PMCID: PMC7141684 DOI: 10.1371/journal.pone.0231174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 03/17/2020] [Indexed: 01/22/2023] Open
Abstract
As the outermost organ, the skin can be damaged following injuries such as wounds and bacterial or viral infections, and such damage should be rapidly restored to defend the body against physical, chemical, and microbial assaults. However, the wound healing process can be delayed or prolonged by health conditions, including diabetes mellitus, venous stasis disease, ischemia, and even stress. In this study, we developed a vibrational cell culture model and investigated the effects of mechanical vibrations on human keratinocytes. The HaCaT cells were exposed to vibrations at a frequency of 45 Hz with accelerations of 0.8g for 2 h per day. The applied mechanical vibration did not affect cell viability or cell proliferation. Cell migratory activity did increase following exposure to vibration, but the change was not statistically significant. The results of immunostaining (F-actin), western blot (ERK1/2), and RT-qPCR (FGF-2, PDGF-B, HB-EGF, TGF-β1, EGFR, and KGFR) analyses demonstrated that the applied vibration resulted in rearrangement of the cytoskeleton, leading to activation of ERK1/2, one of the MAPK signaling pathways, and upregulation of the gene expression levels of HB-EGF and EGFR. The results suggest that mechanical vibration may have wound healing potential and could be used as a mechanical energy-based treatment for enhancing wound healing efficiency.
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Affiliation(s)
- Dongjoo Kim
- Department of Biological Engineering, Inha University, Incheon, Korea
- Biology and Medical Device Evaluation Team, Korea Testing & Research Institute, Gwacheon, Korea
| | - Soonjo Kwon
- Department of Biological Engineering, Inha University, Incheon, Korea
- * E-mail:
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11
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Chen CH, Lin YH, Chen CH, Wang YH, Yeh ML, Cheng TL, Wang CZ. Transforming growth factor beta 1 mediates the low-frequency vertical vibration enhanced production of tenomodulin and type I collagen in rat Achilles tendon. PLoS One 2018; 13:e0205258. [PMID: 30307981 PMCID: PMC6181323 DOI: 10.1371/journal.pone.0205258] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 09/22/2018] [Indexed: 11/19/2022] Open
Abstract
Vertical vibration (VV) is a whole-body vibration with mechanical loading that commonly used in rehabilitation and sports training to increase athlete muscle strength. Our previous study showed that low-magnitude, low-frequency VV at 8 Hz and 10 Hz increased myoblast myogenesis. Herein, we investigated whether a VV frequency at low-frequency 5-10 Hz has anabolic effects on tenocytes and improves tendon stiffness. In primary tenocytes, 10 Hz VV treatment increased the tenogenic marker gene expression of tenomodulin and extracellular matrix type I collagen but decreased decorin expression. qPCR and Enzyme-Linked Immunosorbent Assay (ELISA) results showed that TGF-β1 expression was increased in tenocytes after 3 days of 10 Hz VV treatment in vitro and in Achilles tendons after 3 weeks in vivo. Tenomodulin expression and Achilles tendon stiffness were significantly increased in Achilles tendons after 3 weeks in vivo. We also showed that the TGF-β1 receptor inhibitor SB431542 (10 μM) decreased the expression of tenomodulin and type I collagen but increased the decorin expression in tenocytes. These results indicated that the 10 Hz VV stimulated anabolic effects in tenocytes by increasing TGF-β1 expression that subsequently increases the expression of tenomodulin and type I collagen, and increased the Achilles tendon stiffness. This study provides insight into the low-frequency 10 Hz VV treatment improves tendon properties and can minimizes the risk of ligament/tendon reinjure during rehabilitation.
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Affiliation(s)
- Chia-Hsin Chen
- Department of Physical Medicine and Rehabilitation, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Hsiung Lin
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chung-Hwan Chen
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Orthopaedics, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Adult Reconstruction Surgery, Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yan-Hsiung Wang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- School of Dentistry, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Long Yeh
- Department of Biomedical Engineering, National Cheng Kung University, No.1 University Road, Tainan City, Taiwan
| | - Tsung-Lin Cheng
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chau-Zen Wang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- * E-mail:
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12
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Brewin MP, Bexon CJ, Tucker SC. A case report on the use of vibration to improve soft tissue extensibility after major trauma. J Hand Ther 2017; 30:367-371. [PMID: 28479025 DOI: 10.1016/j.jht.2016.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 10/24/2016] [Accepted: 11/21/2016] [Indexed: 02/03/2023]
Abstract
UNLABELLED This report presents a case where vibration training to the arm alone, as opposed to whole-body vibration, was used to aid rehabilitation to a serious traumatic injury. An improvement in soft tissue extensibility to a major traumatic wound to the wrist and forearm has been noted in a therapy plan including vibration under stretch. After 12 weeks of intensive therapy, a considerable improvement was seen in both the active extension of the wrist and the composite extension of all fingers. This may highlight the use of vibration, as an adjunct to therapy, to specific areas of the human body for improving outcome from traumatic injury. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Mark Paul Brewin
- Salisbury Burns Unit, Salisbury NHS Foundation Trust, Salisbury, Wiltshire, United Kingdom.
| | - Carole J Bexon
- Wessex Rehabilitation Centre, Salisbury NHS Foundation Trust, Salisbury, Wiltshire, United Kingdom
| | - Sarah C Tucker
- Plastic Surgery, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Oxford, United Kingdom
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13
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Maganaris CN, Chatzistergos P, Reeves ND, Narici MV. Quantification of Internal Stress-Strain Fields in Human Tendon: Unraveling the Mechanisms that Underlie Regional Tendon Adaptations and Mal-Adaptations to Mechanical Loading and the Effectiveness of Therapeutic Eccentric Exercise. Front Physiol 2017; 8:91. [PMID: 28293194 PMCID: PMC5328946 DOI: 10.3389/fphys.2017.00091] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 02/02/2017] [Indexed: 12/23/2022] Open
Abstract
By virtue of their anatomical location between muscles and bones, tendons make it possible to transform contractile force to joint rotation and locomotion. However, tendons do not behave as rigid links, but exhibit viscoelastic tensile properties, thereby affecting the length and contractile force in the in-series muscle, but also storing and releasing elastic stain energy as some tendons are stretched and recoiled in a cyclic manner during locomotion. In the late 90s, advancements were made in the application of ultrasound scanning that allowed quantifying the tensile deformability and mechanical properties of human tendons in vivo. Since then, the main principles of the ultrasound-based method have been applied by numerous research groups throughout the world and showed that tendons increase their tensile stiffness in response to exercise training and chronic mechanical loading, in general, by increasing their size and improving their intrinsic material. It is often assumed that these changes occur homogenously, in the entire body of the tendon, but recent findings indicate that the adaptations may in fact take place in some but not all tendon regions. The present review focuses on these regional adaptability features and highlights two paradigms where they are particularly evident: (a) Chronic mechanical loading in healthy tendons, and (b) tendinopathy. In the former loading paradigm, local tendon adaptations indicate that certain regions may “see,” and therefore adapt to, increased levels of stress. In the latter paradigm, local pathological features indicate that certain tendon regions may be “stress-shielded” and degenerate over time. Eccentric exercise protocols have successfully been used in the management of tendinopathy, without much sound understanding of the mechanisms underpinning their effectiveness. For insertional tendinopathy, in particular, it is possible that the effectiveness of a loading/rehabilitation protocol depends on the topography of the stress created by the exercise and is not only reliant upon the type of muscle contraction performed. To better understand the micromechanical behavior and regional adaptability/mal-adaptability of tendon tissue it is important to estimate its internal stress-strain fields. Recent relevant advancements in numerical techniques related to tendon loading are discussed.
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Affiliation(s)
| | | | - Neil D Reeves
- School of Healthcare Science, Manchester Metropolitan University Manchester, UK
| | - Marco V Narici
- Faculty of Medicine and Health Sciences, School of Medicine, University of Nottingham Derby, UK
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14
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Wagner AP, Chinnathambi S, Titze IR, Sander EA. Vibratory stimulation enhances thyroid epithelial cell function. Biochem Biophys Rep 2016; 8:376-381. [PMID: 28955979 PMCID: PMC5614476 DOI: 10.1016/j.bbrep.2016.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 10/11/2016] [Accepted: 10/13/2016] [Indexed: 02/06/2023] Open
Abstract
The tissues of the body are routinely subjected to various forms of mechanical vibration, the frequency, amplitude, and duration of which can contribute both positively and negatively to human health. The vocal cords, which are in close proximity to the thyroid, may also supply the thyroid with important mechanical signals that modulate hormone production via mechanical vibrations from phonation. In order to explore the possibility that vibrational stimulation from vocalization can enhance thyroid epithelial cell function, FRTL-5 rat thyroid cells were subjected to either chemical stimulation with thyroid stimulating hormone (TSH), mechanical stimulation with physiological vibrations, or a combination of the two, all in a well-characterized, torsional rheometer-bioreactor. The FRTL-5 cells responded to mechanical stimulation with significantly (p<0.05) increased metabolic activity, significantly (p<0.05) increased ROS production, and increased gene expression of thyroglobulin and sodium-iodide symporter compared to un-stimulated controls, and showed an equivalent or greater response than TSH only stimulated cells. Furthermore, the combination of TSH and oscillatory motion produced a greater response than mechanical or chemical stimulation alone. Taken together, these results suggest that mechanical vibrations could provide stimulatory cues that help maintain thyroid function. Thyroid epithelial cells responded to mechanical vibrations similar to those from vocalization. This response was equivalent or greater compared to chemical stimulation. The combination of mechanical and chemical stimulation was synergistic. It may be possible to influence thyroid function with mechanical vibrations.
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Affiliation(s)
- A P Wagner
- Department of Biomedical Engineering, University of Iowa, IA, USA
| | - S Chinnathambi
- Department of Biomedical Engineering, University of Iowa, IA, USA
| | - I R Titze
- Department of Communication Sciences and Disorders, University of Iowa, IA, USA.,National Center for Voice and Speech, University of Utah, Salt Lake City, UT, USA
| | - E A Sander
- Department of Biomedical Engineering, University of Iowa, IA, USA
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