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Luo S, Li Z, Liu L, Zhao J, Ge W, Zhang K, Zhou Z, Liu Y. Static magnetic field-induced IL-6 secretion in periodontal ligament stem cells accelerates orthodontic tooth movement. Sci Rep 2024; 14:9851. [PMID: 38684732 PMCID: PMC11059396 DOI: 10.1038/s41598-024-60621-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 04/25/2024] [Indexed: 05/02/2024] Open
Abstract
Static magnetic field (SMF) promoting bone tissue remodeling is a potential non-invasive therapy technique to accelerate orthodontic tooth movement (OTM). The periodontal ligament stem cells (PDLSCs), which are mechanosensitive cells, are essential for force-induced bone remodeling and OTM. However, whether and how the PDLSCs influence the process of inflammatory bone remodeling under mechanical force stimuli in the presence of SMFs remains unclear. In this study, we found that local SMF stimulation significantly enhanced the OTM distance and induced osteoclastogenesis on the compression side of a rat model of OTM. Further experiments with macrophages cultured with supernatants from force-loaded PDLSCs exposed to an SMF showed enhanced osteoclast formation. RNA-seq analysis showed that interleukin-6 (IL-6) was elevated in force-loaded PDLSCs exposed to SMFs. IL-6 expression was also elevated on the pressure side of a rat OTM model with an SMF. The OTM distance induced by an SMF was significantly decreased after injection of the IL-6 inhibitor tocilizumab. These results imply that SMF promotes osteoclastogenesis by inducing force-loaded PDLSCs to secrete the inflammatory cytokine IL-6, which accelerates OTM. This will help to reveal the mechanism of SMF accelerates tooth movement and should be evaluated for application in periodontitis patients.
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Affiliation(s)
- Shitong Luo
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China
- Department of Orthodontics, Suining Central Hospital, Suining, 629000, China
| | - Zhilian Li
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China
| | - Lizhiyi Liu
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China
| | - Juan Zhao
- Department of Pathology, Suining Central Hospital, Suining, 629000, China
| | - Wenbin Ge
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China
| | - Kun Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China
| | - Zhi Zhou
- Department of Orthodontics, Affiliated Hospital of Yunnan University, Yunnan University, 176 Qingnian Road, Wuhua District, Kunming, 650021, Yunnan, China.
| | - Yali Liu
- Department of Orthodontics, School and Hospital of Stomatology, Kunming Medical University, 1088 Middle Haiyuan Road, High-Tech Zone, Kunming, 650106, Yunnan, China.
- Yunnan Key Laboratory of Stomatology, Kunming, 650106, China.
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Nazeri A, Mohammadpour A, Modaghegh MHS, Kianmehr M. Effect of static magnetic field therapy on diabetic neuropathy and quality of life: a double-blind, randomized trial. Diabetol Metab Syndr 2023; 15:148. [PMID: 37400875 DOI: 10.1186/s13098-023-01123-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus (DM) that can cause annoying symptoms. To address this condition, several treatment approaches have been proposed, including static magnetic field (SMF) therapy, which has shown promise in treating neurological conditions. Therefore, this study aimed to investigate the effects of SMF therapy on symptomatic DPN and the quality of life (QoL) in patients with type 2 diabetes. METHODS A double-blind, randomized, placebo-controlled trial was conducted from April to October 2021. Sixty-four DPN patients (20 males, 44 females) were recruited for the study via invitation. The participants were divided into two groups: the magnet group, which used magnetic ankle bracelets (155 mT) for 12 weeks, and the sham group, which used non-magnetic ankle bracelets for the same duration. Neuropathy Symptom Score (NSS), Neuropathic Disability Score (NDS), and Visual Analogue Scale (VAS) were used to assess neuropathy symptoms and pain. In addition, the Neuropathy Specific Quality of Life Questionnaire (Neuro-QoL) tool was used to measure the patients' quality of life. RESULTS Before treatment, there were no significant differences between the magnet and sham groups in terms of the NSS scores (P = 0.50), NDS scores (P = 0.74), VAS scores (P = 0.17), and Neuro-QoL scores (P = 0.82). However, after 12 weeks of treatment, the SMF exposure group showed a significant reduction in NSS scores (P < 0.001), NDS scores (P < 0.001), VAS scores (P < 0.001), and Neuro-QoL scores (P < 0.001) compared to the baseline. The changes in the sham group, on the other hand, were not significant. CONCLUSION According to obtained data, SMF therapy is recommended as an easy-to-use and drug-free method for reducing DPN symptoms and improving QoL in diabetic type-2 patients. Trial registration Registered at Iranian Registry of Clinical Trials: IRCT20210315050706N1, 2021/03/16.
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Affiliation(s)
- Armin Nazeri
- Student Research Committee, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Ali Mohammadpour
- Department of Nursing, School of Nursing, Social Determinants of Health Research Center, Gonabad University of Medical Sciences, Gonabad, Iran.
| | | | - Mojtaba Kianmehr
- Department of Medical Physics and Radiology, School of Paramedicine, Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
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Farhat K, Stavrakis S. Editorial commentary: Electromagnetic field therapy for cardiovascular diseases: how to find the light at the end of the tunnel. Trends Cardiovasc Med 2023; 33:79-80. [PMID: 34756972 DOI: 10.1016/j.tcm.2021.10.008] [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: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 02/07/2023]
Affiliation(s)
- Kassem Farhat
- University of Oklahoma Health Science Center, Oklahoma City, OK, United States
| | - Stavros Stavrakis
- University of Oklahoma Health Science Center, Oklahoma City, OK, United States.
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Hong JE, Lee CG, Hwang S, Kim J, Jo M, Kang DH, Yoo SH, Kim WS, Lee Y, Rhee KJ. Pulsed Electromagnetic Field (PEMF) Treatment Ameliorates Murine Model of Collagen-Induced Arthritis. Int J Mol Sci 2023; 24:ijms24021137. [PMID: 36674651 PMCID: PMC9862561 DOI: 10.3390/ijms24021137] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/24/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease of the joint synovial membranes. RA is difficult to prevent or treat; however, blocking proinflammatory cytokines is a general therapeutic strategy. Pulsed electromagnetic field (PEMF) is reported to alleviate RA's inflammatory response and is being studied as a non-invasive physical therapy. In this current study, PEMF decreased paw inflammation in a collagen-induced arthritis (CIA) murine model. PEMF treatment at 10 Hz was more effective in ameliorating arthritis than at 75 Hz. In the PEMF-treated CIA group, the gross inflammation score and cartilage destruction were lower than in the untreated CIA group. The CIA group treated with PEMF also showed lower serum levels of IL-1β but not IL-6, IL-17, or TNF-α. Serum levels of total anti-type II collagen IgG and IgG subclasses (IgG1, IgG2a, and IgG2b) remained unchanged. In contrast, tissue protein levels of IL-1β, IL-6, TNF-α, receptor activator of nuclear factor kappa-Β (RANK), RANK ligand (RANKL), IL-6 receptor (IL-6R), and TNF-α receptor1 (TNFR1) were all lower in the ankle joints of the PEMF-treated CIA group compared with the CIA group. The results of this study suggest that PEMF treatment can preserve joint morphology cartilage and delay the occurrence of CIA. PEMF has potential as an effective adjuvant therapy that can suppress the progression of RA.
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Affiliation(s)
- Ju-Eun Hong
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Chang-Gun Lee
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
- Department of Medical Genetics, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Soonjae Hwang
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
- Department of Biochemistry, Lee Gil Ya Cancer and Diabetes Institute, GAIHST, Gachon University College of Medicine, Incheon 21999, Republic of Korea
| | - Junyoung Kim
- Department of Biomedical Engineering, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Minjeong Jo
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
| | - Da-Hye Kang
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Sang-Hyeon Yoo
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Woo-Seung Kim
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Yongheum Lee
- Department of Biomedical Engineering, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
| | - Ki-Jong Rhee
- Department of Biomedical Laboratory Science, College of Software and Digital Healthcare Convergence, Yonsei University MIRAE Campus, Wonju 26493, Republic of Korea
- Correspondence: ; Tel.: +82-33-760-2445; Fax: +82-33-760-2195
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Martin A, Chopra R, Nicassio PM. Nonpharmacologic Pain Management in Inflammatory Arthritis. Rheum Dis Clin North Am 2021; 47:277-295. [PMID: 33781495 DOI: 10.1016/j.rdc.2020.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This article provides an overview of nonpharmacologic options for the treatment of pain in patients with inflammatory arthritis, such as peripheral spondyloarthritis, psoriatic arthritis, ankylosing spondylitis, and rheumatoid arthritis. The experience of pain in chronic disease is a complex process influenced by multiple domains of health. The discussion focuses on the establishment of a framework for pain control that engages with factors that influence the experience of pain and explores the evidence base that supports specific modalities of nonpharmacologic pain control, such as mindfulness, cognitive behavioral therapy, exercise, massage, splinting, and heat therapy. Rheumatoid and spondyloarthritides are considered separately.
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Affiliation(s)
- Alexander Martin
- Division of Rheumatology, UMass Medical School, 119 Belmont Street, Worcester, MA 01605, USA
| | - Ratnesh Chopra
- Division of Rheumatology, UMass Medical School, 119 Belmont Street, Worcester, MA 01605, USA.
| | - Perry M Nicassio
- Department of Psychiatry, UCLA, 760 Westwood Plaza, C9-402, Los Angeles, CA 90095, USA
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6
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Fan Y, Ji X, Zhang L, Zhang X. The Analgesic Effects of Static Magnetic Fields. Bioelectromagnetics 2021; 42:115-127. [PMID: 33508148 DOI: 10.1002/bem.22323] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 12/17/2020] [Accepted: 01/02/2021] [Indexed: 11/09/2022]
Abstract
Pain is one of the most common reasons why people seek medical care, which is related to most disease states. Magnetic fields (MFs) can be applied locally to specific parts of human bodies with high penetration and temporal control, which have a long-debated history in folk therapy. The purpose of this review is to collect and analyze experimental data about the analgesic effects of static magnetic fields (SMFs) so that we can have a scientific understanding regarding this topic. We collected 28 studies (25 English and 3 Chinese papers) with proper sham controls that investigated the effects of SMFs on pain relief in humans or mice. We found that 64% of the human studies and all mice studies in the literature showed positive analgesic effects of SMFs, which are related to factors including SMF intensity, treatment time, and pain types. Higher intensity and/or longer treatment time, as well as some specific pain types, may have better pain relief effects. Initial mechanistic studies indicated that membrane receptors, such as capsaicin receptor VR1/TRPV1, opioid receptors, and P2X3 receptors, might be involved. By describing experimental evidence and analysis, we found that SMFs actually hold considerable promise for managing some specific types of pain if proper SMF parameters are used. More studies comprehensively evaluating the parameters of SMF and its corresponding analgesic effects on different pain types, as well as the underlying molecular mechanisms, will be necessary to further validate its therapeutic potential in pain management in the future. Bioelectromagnetics. 00:00-00, 2021. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
- Yixiang Fan
- High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, China
| | - Xinmiao Ji
- High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Lei Zhang
- High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Xin Zhang
- High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, China
- International Magnetobiology Frontier Research Center (iMFRC), Science Island, Hefei, China
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7
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Rheumatoid Arthritis in the View of Osteoimmunology. Biomolecules 2020; 11:biom11010048. [PMID: 33396412 PMCID: PMC7823493 DOI: 10.3390/biom11010048] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 12/12/2022] Open
Abstract
Rheumatoid arthritis is characterized by synovial inflammation and irreversible bone erosions, both highlighting the immense reciprocal relationship between the immune and bone systems, designed osteoimmunology two decades ago. Osteoclast-mediated resorption at the interface between synovium and bone is responsible for the articular bone erosions. The main triggers of this local bone resorption are autoantibodies directed against citrullinated proteins, as well as pro-inflammatory cytokines and the receptor activator of nuclear factor-κB ligand, that regulate both the formation and activity of the osteoclast, as well as immune cell functions. In addition, local bone loss is due to the suppression of osteoblast-mediated bone formation and repair by inflammatory cytokines. Similarly, inflammation affects systemic bone remodeling in rheumatoid arthritis with the net increase in bone resorption, leading to systemic osteoporosis. This review summarizes the substantial progress that has been made in understanding the pathophysiology of systemic and local bone loss in rheumatoid arthritis.
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8
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Traditional and modern management strategies for rheumatoid arthritis. Clin Chim Acta 2020; 512:142-155. [PMID: 33186593 DOI: 10.1016/j.cca.2020.11.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/03/2020] [Accepted: 11/03/2020] [Indexed: 12/20/2022]
Abstract
Rheumatoid arthritis (RA) is a serious disorder of the joints affecting 1 or 2% of the population aged between 20 and 50 years worldwide. RA is the foremost cause of disability in developing and Western populations. It is an autoimmune disease-causing inflammation and pain involving synovial joints. Pro-inflammatory markers, including cytokines, such as interleukin -1 (IL-1), IL-6, IL-7, IL-8, and tumor necrosis factor-α (TNF-α) are involved in RA. RA treatment involves TNF-α blockade, B cell therapy, IL-1 and IL-6 blockade, and angiogenesis inhibition. Synthetic drugs available for the treatment of RA include disease-modifying anti-rheumatic drugs (DMARD), such as cyclophosphamide, sulfasalazine, methotrexate, nonsteroidal anti-inflammatory drugs (NSAIDs), and intramuscular gold. These agents induce adverse hepatorenal effects, hypertension, and gastric ulcers. We found that patients diagnosed with chronic pain, as in RA, and those refractory to contemporary management are most likely to seek traditional medicine. Approximately 60-90% of patients with arthritis use traditional medicines. Therefore, the efficacy and safety of these traditional medicines need to be established. The treatment for RA entails a comprehensive multidisciplinary strategy to reduce pain and inflammation and to restore the activity of joints. The potential medicinal plants exhibiting anti-arthritic and anti-rheumatic pharmacological activity are reviewed here.
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Lee K, Go G, Yoo A, Kang B, Choi E, Park JO, Kim CS. Wearable Fixation Device for a Magnetically Controllable Therapeutic Agent Carrier: Application to Cartilage Repair. Pharmaceutics 2020; 12:E593. [PMID: 32604748 PMCID: PMC7355457 DOI: 10.3390/pharmaceutics12060593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 11/17/2022] Open
Abstract
Recently, significant research efforts have been devoted toward the development of magnetically controllable drug delivery systems, however, drug fixation after targeting remains a challenge hindering long-term therapeutic efficacy. To overcome this issue, we present a wearable therapeutic fixation device for fixing magnetically controllable therapeutic agent carriers (MCTACs) at defect sites and its application to cartilage repair using stem cell therapeutics. The developed device comprises an array of permanent magnets based on the Halbach array principle and a wearable band capable of wrapping the target body. The design of the permanent magnet array, in terms of the number of magnets and array configuration, was determined through univariate search optimization and 3D simulation. The device was fabricated for a given rat model and yielded a strong magnetic flux density (exceeding 40 mT) in the region of interest that was capable of fixing the MCTAC at the desired defect site. Through in-vitro and in-vivo experiments, we successfully demonstrated that MCTACs, both a stem cell spheroid and a micro-scaffold for cartilage repair, could be immobilized at defect sites. This research is expected to advance precise drug delivery technology based on MCTACs, enabling subject-specific routine life therapeutics. Further studies involving the proposed wearable fixation device will be conducted considering prognostics under actual clinical settings.
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Affiliation(s)
- Kyungmin Lee
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Korea; (K.L.); (G.G.); (E.C.)
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Gwangjun Go
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Korea; (K.L.); (G.G.); (E.C.)
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Ami Yoo
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Byungjeon Kang
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Eunpyo Choi
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Korea; (K.L.); (G.G.); (E.C.)
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Jong-Oh Park
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Korea; (K.L.); (G.G.); (E.C.)
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
| | - Chang-Sei Kim
- School of Mechanical Engineering, Chonnam National University, Gwangju 61186, Korea; (K.L.); (G.G.); (E.C.)
- Korea Institute of Medical Microrobotics, Gwangju 61011, Korea; (A.Y.); (B.K.)
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Kuwajima Y, Ishida Y, Lee C, Mayama H, Satoh K, Ishikawa-Nagai S. 3D digital analysis of magnetic force-driven orthodontic tooth movement. Heliyon 2019; 5:e02861. [PMID: 31844745 PMCID: PMC6895672 DOI: 10.1016/j.heliyon.2019.e02861] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/11/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023] Open
Abstract
With the introduction of rare earth magnets like neodymium-iron-boron (NdFeB), it has become possible to produce small magnets with high forces, necessary for its usage in the field of dentistry, such as for orthodontic tooth movement. The ultimate goal of this project is to establish magnetic force-driven orthodontic treatment as a future treatment modality for comprehensive orthodontic treatment. In order to utilize magnets for orthodontic treatment, we must first understand the characteristics of tooth movement created by magnetic forces. In this study, we aimed to digitally assess the efficacy of magnetic attraction and repulsion forces by means of a 3D digital analysis of movement (distance, direction, angulation and duration) and rotation (yaw, pitch and roll) of the crown and root of teeth in an ex vivo typodont model. We performed space closure and space gain treatment of maxillary central incisors (n = 30) and analyzed the movement and rotation of the teeth and root apex with 3D digital analysis. The results of the typodont model indicated significant differences on amount, speed and rotation of tooth and root movement created by magnetic attraction and repulsion forces. We also mimicked a moderate crowding typodont case and successfully treated it with a combination of attraction and repulsion magnetic forces. The moderate crowding case utilized magnets and a titanium archwire to guide the planned tooth movements and prevent undesired or unexpected movement. Further ex vivo experiments and considerations for biosafety will be necessary to investigate magnet force-driven orthodontics as a future modality of orthodontic treatment.
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Affiliation(s)
- Yukinori Kuwajima
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, Boston, MA, USA
| | - Yoshiki Ishida
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, Boston, MA, USA
| | - Cliff Lee
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, Boston, MA, USA
- Department of Orofacial Sciences, University of California, San Francisco School of Dentistry, CA, USA
| | - Hisayo Mayama
- Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Kazuro Satoh
- Division of Orthodontics, Department of Developmental Oral Health Science, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan
| | - Shigemi Ishikawa-Nagai
- Department of Oral Medicine, Immunity and Infection, Harvard School of Dental Medicine, Boston, MA, USA
- Corresponding author.
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11
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Sohinki D, Stavrakis S. New approaches for treating atrial fibrillation: Focus on autonomic modulation. Trends Cardiovasc Med 2019; 30:433-439. [PMID: 31708408 DOI: 10.1016/j.tcm.2019.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/07/2019] [Accepted: 10/23/2019] [Indexed: 12/18/2022]
Abstract
Atrial fibrillation (AF) is a rapidly growing clinical problem in routine practice, both for cardiologists as well as general practitioners. Current therapies aimed at the management of AF include anti-arrhythmic drug therapy and catheter ablation. These therapies have a number of limitations and risks, and have disappointing long-term efficacy in maintaining sinus rhythm and improving hard clinical outcomes. Because of this, there is growing interest in pursuing alternative management strategies in patients with AF. This review seeks to highlight emerging AF therapies, with a specific focus on several modalities aimed at modulation of the autonomic nervous system. These therapies have shown promise in early pre-clinical and clinical trials, and represent exciting alternatives to standard AF treatment.
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Affiliation(s)
- Daniel Sohinki
- Department of Cardiology, Augusta University Medical Center, Augusta, GA, United States
| | - Stavros Stavrakis
- Department of Cardiology, University of Oklahoma Health Sciences Center, 800 Stanton L. Young Blvd., Suite 5400, Oklahoma, OK, United States; Heart Rhythm Institute, University of Oklahoma Health Sciences Center, Oklahoma, OK, United States.
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12
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13
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Ross CL, Ang DC, Almeida-Porada G. Targeting Mesenchymal Stromal Cells/Pericytes (MSCs) With Pulsed Electromagnetic Field (PEMF) Has the Potential to Treat Rheumatoid Arthritis. Front Immunol 2019; 10:266. [PMID: 30886614 PMCID: PMC6409305 DOI: 10.3389/fimmu.2019.00266] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 01/31/2019] [Indexed: 01/14/2023] Open
Abstract
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic inflammation of synovium (synovitis), with inflammatory/immune cells and resident fibroblast-like synoviocytes (FLS) acting as major players in the pathogenesis of this disease. The resulting inflammatory response poses considerable risks as loss of bone and cartilage progresses, destroying the joint surface, causing joint damage, joint failure, articular dysfunction, and pre-mature death if left untreated. At the cellular level, early changes in RA synovium include inflammatory cell infiltration, synovial hyperplasia, and stimulation of angiogenesis to the site of injury. Different angiogenic factors promote this disease, making the role of anti-angiogenic therapy a focus of RA treatment. To control angiogenesis, mesenchymal stromal cells/pericytes (MSCs) in synovial tissue play a vital role in tissue repair. While recent evidence reports that MSCs found in joint tissues can differentiate to repair damaged tissue, this repair function can be repressed by the inflammatory milieu. Extremely-low frequency pulsed electromagnetic field (PEMF), a biophysical form of stimulation, has an anti-inflammatory effect by causing differentiation of MSCs. PEMF has also been reported to increase the functional activity of MSCs to improve differentiation to chondrocytes and osteocytes. Moreover, PEMF has been demonstrated to accelerate cell differentiation, increase deposition of collagen, and potentially return vascular dysfunction back to homeostasis. The aim of this report is to review the effects of PEMF on MSC modulation of cytokines, growth factors, and angiogenesis, and describe its effect on MSC regeneration of synovial tissue to further understand its potential role in the treatment of RA.
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Affiliation(s)
- Christina L Ross
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, United States.,Wake Forest Center for Integrative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Dennis C Ang
- Department of Rheumatology and Immunology, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Graça Almeida-Porada
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, United States
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The influence of N and S poles of static magnetic field (SMF) on Candida albicans hyphal formation and antifungal activity of amphotericin B. Folia Microbiol (Praha) 2019; 64:727-734. [PMID: 30788802 PMCID: PMC6861703 DOI: 10.1007/s12223-019-00686-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/23/2019] [Indexed: 12/27/2022]
Abstract
Due to the increasing number of Candida albicans’ infections and the resistance of this pathogenic fungus to drugs, new therapeutic strategies are sought. One of such strategies may be the use of static magnetic field (SMF). C. albicans cultures were subjected to static magnetic field of the induction 0.5 T in the presence of fluconazole and amphotericin B. We identified a reduction of C. albicans hyphal length. Also, a statistically significant additional effect on the viability of C. albicans was revealed when SMF was combined with the antimycotic drug amphotericin B. The synergistic effect of this antimycotic and SMF may be due to the fact that amphotericin B binds to ergosterol in plasma membrane and SMF similarly to MF could influence domain orientation in plasma membrane (PM).
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Sowah D, Balat F, Straube S. Work-related outcomes in randomized, double blind, placebo-controlled trials in osteoarthritis - are they adequately reported in journal publications? A systematic review. J Occup Med Toxicol 2018; 13:32. [PMID: 30377437 PMCID: PMC6195965 DOI: 10.1186/s12995-018-0215-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/05/2018] [Indexed: 11/10/2022] Open
Abstract
Background Osteoarthritis (OA) has a high prevalence in Western societies and can affect an individual's life in a number of domains, including work. In our experience, treatment trials on OA, however, rarely report work-related outcomes. Here we conducted a systematic review to assess the reporting of work-related outcomes in randomized, double blind, placebo-controlled trials in OA. Our systematic review also compared two search strategies for identifying eligible publications, one where work-related terms were included in the database search string (A) and one where this was not the case and work-related outcomes were identified by searches of full text Portable Document Formats (PDFs) (B). Search strategy A would conventionally be used and would only identify publications where work-related terms were mentioned in the title or abstract. Search strategy B presents the innovation of full text PDF searching and would identify publications were work-related terms were reported in the full text, regardless of whether they are mentioned in the title and abstract or not. We hypothesize that search strategy B identifies more relevant publications than search strategy A. Methods Electronic database searching was performed in Medline (Pubmed) from database inception to February 23, 2017 to identify peer-reviewed articles of randomized, double blind, placebo-controlled treatment trials in OA of the hand, hip, or knee, available as full-text PDFs. For search strategy A, search terms to identify work-related outcomes were included in the database search string, while search strategy B did not have these terms included in the database search string, but instead involved full text PDF searching. We included English language articles only and only those articles where searchable PDFs were available, to enable a comparison between search strategies A and B. Additionally, included studies also needed to report on pain intensity in relation to the work-related outcomes. Results Search strategy A yielded 50 hits combined for hand, hip or knee OA that mentioned some work-related concept in the title or abstract; 12 articles had to be excluded because they were not available as searchable PDFs. Screening of the remaining 38 articles resulted in only two articles that satisfied our inclusion criteria. Search strategy B yielded 986 hits, out of which 201 articles were excluded because searchable full text PDFs were not available. PDF full text searching and further screening resulted in 10 articles that were considered eligible for our review. Conclusions Work-related outcomes are rarely reported in journal publication on randomized, double blind, placebo-controlled trials of hand, hip or knee OA. Searching full text PDFs yields more eligible articles than searching titles and abstracts only.
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Affiliation(s)
- Daniel Sowah
- Division of Preventive Medicine, Department of Medicine, University of Alberta, 5-30 University Terrace, 8303-112 Street, Edmonton, AB T6G 2T4 Canada
| | - Flora Balat
- Division of Preventive Medicine, Department of Medicine, University of Alberta, 5-30 University Terrace, 8303-112 Street, Edmonton, AB T6G 2T4 Canada
| | - Sebastian Straube
- Division of Preventive Medicine, Department of Medicine, University of Alberta, 5-30 University Terrace, 8303-112 Street, Edmonton, AB T6G 2T4 Canada
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Zhu Y, Wang S, Long H, Zhu J, Jian F, Ye N, Lai W. Effect of static magnetic field on pain level and expression of P2X3 receptors in the trigeminal ganglion in mice following experimental tooth movement. Bioelectromagnetics 2016; 38:22-30. [PMID: 27770441 DOI: 10.1002/bem.22009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 09/10/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Yafen Zhu
- Department of Orthodontics; State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Shengguo Wang
- Department of Stomatology; Second Affiliated Hospital; Chongqing Medical University; Chongqing China
| | - Hu Long
- Department of Orthodontics; State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Jingyi Zhu
- Department of Orthodontics; State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Fan Jian
- Department of Orthodontics; State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Niansong Ye
- Department of Orthodontics; Ninth People's Hospital; Shanghai Jiao Tong University; Shanghai China
| | - Wenli Lai
- Department of Orthodontics; State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
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Weintraub MI, Cole SP. Pulsed Magnetic Field Therapy in Refractory Neuropathic Pain Secondary to Peripheral Neuropathy: Electrodiagnostic Parameters—Pilot Study. Neurorehabil Neural Repair 2016; 18:42-6. [PMID: 15035963 DOI: 10.1177/0888439003261024] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Context. Neuropathic pain (NP) from peripheral neuropathy (PN) arises from ectopic firing of unmyelinated C-fibers with accumulation of sodium and calcium channels. Because pulsed electromagnetic fields (PEMF) safely induce extremely low frequency (ELF) quasirectangular currents that can depolarize, repolarize, and hyperpolarize neurons, it was hypothesized that directing this energy into the sole of one foot could potentially modulate neuropathic pain. Objective. To determine if 9 consecutive 1-h treatments in physician’s office (excluding weekends) of a pulsed signal therapy can reduce NP scores in refractory feet with PN. Design/setting/patients. 24 consecutive patients with refractory and symptomatic PN from diabetes, chronic inflammatory demyelinating polyneuropathy (CIDP), pernicious anemia, mercury poisoning, paraneoplastic syndrome, tarsal tunnel, and idiopathic sensory neuropathy were enrolled in this nonplacebo pilot study. The most symptomatic foot received therapy. Primary endpoints were comparison of VAS scores at the end of 9 days and the end of 30 days follow-up compared to baseline pain scores. Additionally, Patients’ Global Impression of Change (PGIC) questionnaire was tabulated describing response to treatment. Subgroup analysis of nerve conduction scores, quantified sensory testing (QST), and serial examination changes were also tabulated. Subgroup classification of pain (Serlin) was utilized to determine if there were disproportionate responses. Intervention. Noninvasive pulsed signal therapy generates a unidirectional quasirectangular waveform with strength about 20 gauss and a frequency about 30 Hz into the soles of the feet for 9 consecutive 1-h treatments (excluding weekends). The most symptomatic foot of each patient was treated. Results. All 24 feet completed 9 days of treatment. 15/24 completed follow-up (62%) with mean pain scores decreasing 21% from baseline to end of treatment (P = 0.19) but with 49% reduction of pain scores from baseline to end of follow-up (P < 0.01). Of this group, self-reported PGIC was improved 67% (n = 10) and no change was 33% (n = 5). An intent-to-treat analysis based on all 24 feet demonstrated a 19% reduction in pain scores from baseline to end of treatment (P = 0.10) and a 37% decrease from baseline to end of follow-up ( P < 0.01). Subgroup analysis revealed 5 patients with mild pain with nonsignificant reduction at end of follow-up. Of the 19 feet with moderate to severe pain, there was a 28% reduction from baseline to end of treatment (P < 0.05) and a 39% decrease from baseline to end of follow-up (P < 0.01). Benefit was better in those patients with axonal changes and advanced CPT baseline scores. The clinical examination did not change. There were no adverse events or safety issues. Conclusions. These pilot data demonstrate that directing PEMF to refractory feet can provide unexpected shortterm analgesic effects in more than 50% of individuals. The role of placebo is not known and was not tested. The precise mechanism is unclear yet suggests that severe and advanced cases are more magnetically sensitive. Future studies are needed with randomized placebo-controlled design and longer treatment periods.
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Effects of Whole-Body Cryotherapy in Comparison with Other Physical Modalities Used with Kinesitherapy in Rheumatoid Arthritis. BIOMED RESEARCH INTERNATIONAL 2015; 2015:409174. [PMID: 26576422 PMCID: PMC4631852 DOI: 10.1155/2015/409174] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 09/24/2015] [Accepted: 09/30/2015] [Indexed: 12/20/2022]
Abstract
Whole-body cryotherapy (WBC) has been frequently used to supplement the rehabilitation of patients with rheumatoid arthritis (RA). The aim of this study was to compare the effect of WBC and traditional rehabilitation (TR) on clinical parameters and systemic levels of IL-6, TNF-α in patients with RA. The study group comprised 25 patients who were subjected to WBC (−110°C) and 19 patients who underwent a traditional rehabilitation program. Some clinical variables and levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were used to assess the outcomes. After therapy both groups exhibited similar improvement in pain, disease activity, fatigue, time of walking, and the number of steps over a distance of 50 m. Only significantly better results were observed in HAQ in TR group (p < 0.05). However, similar significant reduction in IL-6 and TNF-α level was observed. The results showed positive effects of a 2-week rehabilitation program for patients with RA regardless of the kind of the applied physical procedure.
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Examination of Long Term Magnetic Fields on Rat Calvarial and Mandibular Bone Mass. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.2478/v10133-010-0025-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Richmond SJ, Gunadasa S, Bland M, MacPherson H. Copper bracelets and magnetic wrist straps for rheumatoid arthritis--analgesic and anti-inflammatory effects: a randomised double-blind placebo controlled crossover trial. PLoS One 2013; 8:e71529. [PMID: 24066023 PMCID: PMC3774818 DOI: 10.1371/journal.pone.0071529] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 06/26/2013] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Folklore remedies for pain and inflammation in rheumatoid arthritis include the application of magnets and copper to the skin. Despite the popular use of devices containing magnets or copper for this purpose, little research has been conducted to evaluate the efficacy of such treatments. OBJECTIVE To investigate whether the practice of wearing magnetic wrists straps, or copper bracelets, offers any specific therapeutic benefit for patients with rheumatoid arthritis. DESIGN Randomised double-blind placebo-controlled crossover trial. METHODS 70 patients, aged 33 to 79 years and predominantly female (n = 52), with painful rheumatoid arthritis were recruited from general practices within Yorkshire. Participants were randomly allocated to wear four devices in a different order. Devices tested were: a standard (1502 to 2365 gauss) magnetic wrist strap, a demagnetised (<20 gauss) wrist strap, an attenuated (250 to 350 gauss) magnetic wrist strap, and a copper bracelet. Devices were each worn for five weeks, with treatment phases being separated by one week wash-out periods. The primary outcome measured was pain using a 100 mm visual analogue scale. Secondary pain measures were the McGill Pain Questionnaire and tender joint count. Inflammation was assessed using C-reactive protein and plasma viscosity blood tests and by swollen joint count. Physical function was assessed using the Health Assessment Questionnaire (Disability Index). Disease activity and medication use was also measured. RESULTS 65 participants provided complete self-report outcome data for all devices, four participants provided partial data. Analysis of treatment outcomes did not reveal any statistically significant differences (P>0.05) between the four devices in terms of their effects on pain, inflammation, physical function, disease activity, or medication use. CONCLUSIONS Wearing a magnetic wrist strap or a copper bracelet did not appear to have any meaningful therapeutic effect, beyond that of a placebo, for alleviating symptoms and combating disease activity in rheumatoid arthritis. TRIAL REGISTRATION Controlled-Trials.com ISRCTN51459023 ISRCTN51459023.
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Affiliation(s)
- Stewart J. Richmond
- Department of Health Sciences, University of York, Heslington, York, United Kingdom
| | - Shalmini Gunadasa
- Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom
| | - Martin Bland
- Department of Health Sciences, University of York, Heslington, York, United Kingdom
| | - Hugh MacPherson
- Department of Health Sciences, University of York, Heslington, York, United Kingdom
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Kanai S, Taniguchi N. Effect of polarity exchangeable permanent magnet on frozen shoulder pain. ACTA ACUST UNITED AC 2013. [DOI: 10.1163/156856906775249811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Macfarlane GJ, Paudyal P, Doherty M, Ernst E, Lewith G, MacPherson H, Sim J, Jones GT. A systematic review of evidence for the effectiveness of practitioner-based complementary and alternative therapies in the management of rheumatic diseases: rheumatoid arthritis. Rheumatology (Oxford) 2012; 51:1707-13. [PMID: 22661556 DOI: 10.1093/rheumatology/kes133] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To critically review the evidence on the effectiveness of complementary therapies for patients with RA. METHODS Randomized controlled trials, published in English up to May 2011, were identified using systematic searches of bibliographic databases and searching of reference lists. Information was extracted on outcomes and statistical significance in comparison with alternative treatments and reported side effects. The methodological quality of the identified studies was determined using the Jadad scoring system. All outcomes were considered but with a focus on patient global assessment and pain reporting. RESULTS Eleven eligible trials were identified covering seven therapies. Three trials that compared acupuncture with sham acupuncture reported no significant difference in pain reduction between the groups but one out of two reported an improvement in patient global assessment. Except for reduction in physician's global assessment of treatment and disease activity reported in one trial, no other comparative benefit of acupuncture was seen. There were two studies on meditation and one each on autogenic training, healing therapy, progressive muscle relaxation, static magnets and tai chi. None of these trials reported positive comparative effects on pain but some positive effects on patient global assessment were noted at individual time points in the healing therapy and magnet therapy studies. A small number of other outcomes showed comparative improvement in individual trials. There were no reports of major adverse events. CONCLUSION The very limited evidence available indicates that for none of the practitioner-based complementary therapies considered here is there good evidence of efficacy or effectiveness in the management of RA.
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Affiliation(s)
- Gary J Macfarlane
- Epidemiology Group, School of Medicine and Dentistry, University of Aberdeen, Foresterhill, Aberdeen, UK.
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László JF, Farkas P, Reiczigel J, Vágó P. Effect of local exposure to inhomogeneous static magnetic field on stomatological pain sensation – a double-blind, randomized, placebo-controlled study. Int J Radiat Biol 2012; 88:430-8. [DOI: 10.3109/09553002.2012.661916] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
BACKGROUND Magnetic and electromagnetic fields have been accepted as real physical entities in medicine and are believed to achieve pain relief. Magnetic field therapy has been acknowledged as a non-invasive, safe and simple method for treatment of the site of injury, source of pain or inflammation, or other types of illnesses and pathologies. However, a consensus regarding the statistical relevance of the effects has not been established. MATERIALS AND METHODS A detailed literature research was performed and the results were evaluated. Inclusion criteria were that the studies had to be randomized, double-blind and placebo-controlled, and no additional forms of treatment other than magnetic effects were allowed to be used. RESULTS The evaluation of 17 studies with static magnetic fields showed on average no significant difference in pain relief between the group treated with magnetic fields and the placebo group. All studies using magnetic fields showed that forms of treatment conducted over a period of 30 min and at intervals of 1 week have no effects. In 10 studies with dynamic magnetic fields different effects were registered, which ranged from no effect to significant differences regarding pain relief between the treated and the control groups. CONCLUSIONS Static magnetic fields are ineffective with respect to pain therapy. Dynamic magnetic fields show diverse effects. Hence, this therapy should be researched in depth.
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Complementary and alternative medicine use in rheumatoid arthritis: proposed mechanism of action and efficacy of commonly used modalities. Rheumatol Int 2009; 30:571-86. [DOI: 10.1007/s00296-009-1206-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2009] [Accepted: 10/06/2009] [Indexed: 10/20/2022]
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Antal M, László J. Exposure to inhomogeneous static magnetic field ceases mechanical allodynia in neuropathic pain in mice. Bioelectromagnetics 2009; 30:438-45. [DOI: 10.1002/bem.20498] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
There is increasing interest in using permanent magnets for therapeutic purposes encouraged by basic science publications and clinical reports. Magnetotherapy provides a non invasive, safe, and easy method to directly treat the site of injury, the source of pain and inflammation, and other types of disease. The physiological bases for the use of magnetic fields for tissue repair as well as physical principles of dosimetry and application of various magnetic fields are subjects of this review. Analysis of the magnetic and electromagnetic stimulation is followed by a discussion of the advantage of magnetic field stimulation compared with electric current and electric field stimulation.
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Colbert AP, Souder J, Markov M. Static magnetic field therapy: methodological challenges to conducting clinical trials. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s10669-008-9203-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Weintraub MI, Cole SP. A randomized controlled trial of the effects of a combination of static and dynamic magnetic fields on carpal tunnel syndrome. PAIN MEDICINE 2008; 9:493-504. [PMID: 18777606 DOI: 10.1111/j.1526-4637.2007.00324.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To determine if a physics-based combination of simultaneous static and time-varying dynamic magnetic field stimulation to the wrist 4 hours/day for 2 months can reduce subjective neuropathic pain and influence objective electrophysiologic parameters of patients with carpal tunnel syndrome (CTS). METHODS Randomized, double-blinded, placebo-controlled trial of 36 symptomatic hands. Primary endpoints were visual analog scale (VAS) and neuropathic pain scale (NPS) scores at baseline and 2 months and a Patient's Global Impression of Change (PGIC) questionnaire at the end of 2 months. Secondary endpoints were neurologic examination, median nerve distal latencies (compound muscle action potential [CMAP]/sensory nerve action potential [SNAP]), dynamometry, pinch gauge readings, and current perception threshold (CPT) scores. An "active" device was provided gratis at the end of the study, with 15 subjects voluntarily remaining within the open protocol an additional 2-10 months and using the preselected primary and secondary parameters. RESULTS (two months). Of the 31 hands, 25 (13 magnet, 12 sham) had moderate to severe pain (VAS > 4). The VAS and PGIC revealed a nonsignificant pain reduction. NPS analyses (anova) demonstrated a statistically significant reduction of "deep" pain (35% downward arrow vs 12% upward arrow, P = 0.018), NPS Total Composite (decreases of 42% vs 24%, P = 0.042), NPS Total Descriptor Score (NPS 8; 43% vs 24%), and NPS 4 (42% vs 11%). Motor strength, CMAP/SNAP, and CPT scores were not significantly changed. Of the 15 hands with up to 10 months of active PEMF (pulsed electromagnetic fields) exposure, there was objective improvement in nerve conduction (CMAP = 53%, SNAP = 40%, >1 SD), and subjective improvement on examination (40%), pain scores (50%), and PGIC (70%). No detectable changes in motor strength and CPT. CONCLUSIONS PEMF exposure in refractory CTS provides statistically significant short- and longterm pain reduction and mild improvement in objective neuronal functions. Neuromodulation appears to influence nociceptive-C and large A-fiber functions, probably through ion/ligand binding.
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Abstract
Basic scientific advances in understanding the neuropsychobioloqy of bipolar disorder have given us a multitude of opportunities to explore and exploit new avenues of therapeutics. Pharmacotherapeutic approaches include: neuropeptides (agonists such as thyrotropin-releasing hormone and antagonists such as corticotropin-releasing hormone), neurotrophic factors (especially brain-derived neurotrophic factor), and glutamatergic mechanisms (such as riluzole, ketamine, and antagonists of the NR-2B subunit of the glutamate receptor). Physiological interventions that would offer alternatives to electroconvulsive therapy include: repeated transcranial magnetic stimulation, especially at more intense stimulation parameters; magnetic stimulation therapy (seizures induced more focally by magnetic rather than electrical stimulation with resulting reduced meaning loss); vagal nerve stimulation, and deep brain stimulation. However, these, as well as the panoply of existing treatments, require further intensive investigation to place each of them in the proper therapeutic seguence and combination for the individual patient, based on development of better clinical and biological predictors of response. Large clinical trial networks and development of systematic research in clinical practice settings, such as that featured by the National Cancer institute for cancer chemotherapy, would greatly accelerate the progress in incorporating new, as well as existing, agents into the best treatment strategies. The bipolar disorders, which are increasingly recognized as complex, highly comorbid conditions with a high morbidity and mortality, of which the majority start in childhood and adolescence, are not likely to respond completely to any single new treatment agent, and new public health initiatives and research strategies are needed as much as any new single treatment advance.
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Affiliation(s)
- Robert M Post
- George Washington University School of Medicine, USA.
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Richmond SJ. Magnet therapy for the relief of pain and inflammation in rheumatoid arthritis (CAMBRA): a randomised placebo-controlled crossover trial. Trials 2008; 9:53. [PMID: 18789135 PMCID: PMC2556642 DOI: 10.1186/1745-6215-9-53] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2008] [Accepted: 09/12/2008] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Rheumatoid arthritis is a common inflammatory autoimmune disease. Although disease activity may be managed effectively with prescription drugs, unproven treatments such as magnet therapy are sometimes used as an adjunct for pain control. Therapeutic devices incorporating permanent magnets are widely available and easy to use. Magnets may also be perceived as a more natural and less harmful alternative to analgesic compounds. Of interest to health service researchers is the possibility that magnet therapy might help to reduce the economic burden of managing chronic musculoskeletal disorders. Magnets are extremely cheap to manufacture and prolonged treatment involves a single cost. Despite this, good quality scientific evidence concerning the safety, effectiveness and cost-effectiveness of magnet therapy is scarce. The primary aim of the CAMBRA trial is to investigate the effectiveness of magnet therapy for relieving pain and inflammation in rheumatoid arthritis. METHODS/DESIGN The CAMBRA trial employs a randomised double-blind placebo-controlled crossover design. Participant will each wear four devices: a commercially available magnetic wrist strap; an attenuated wrist strap; a demagnetised wrist strap; and a copper bracelet. Device will be allocated in a randomised sequence and each worn for five weeks. The four treatment phases will be separated by wash out periods lasting one week. Both participants and researchers will be blind, as far as feasible, to the allocation of experimental and control devices. In total 69 participants will be recruited from general practices within the UK. Eligible patients will have a verified diagnosis of rheumatoid arthritis that is being managed using drugs, and will be experiencing chronic pain. Outcomes measured will include pain, inflammation, disease activity, physical function, medication use, affect, and health related costs. Data will be collected using questionnaires, diaries, manual pill counts and blood tests. DISCUSSION Magnetism is an inherent property of experimental devices which is hard to conceal. The use of multiple control devices, including a copper bracelet, represents a concerted attempt to overcome methodological limitations associated with trials in this field. The trial began in July 2007. At the time of submission (August 2008) recruitment has finished, with 70 trial participants, and data collection is almost complete. TRIAL REGISTRATION Current Controlled Trials ISRCTN51459023.
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Colbert AP, Markov MS, Souder JS. Static magnetic field therapy: dosimetry considerations. J Altern Complement Med 2008; 14:577-82. [PMID: 18532897 DOI: 10.1089/acm.2007.0827] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The widespread use of static magnetic field (SMF) therapy as a self-care physical intervention has led to the conduct of numerous randomized controlled trials (RCTs). A recent systematic review of SMF trials for pain reduction concluded that the evidence does not support the use of permanent magnets for pain relief. We argue that this conclusion is unwarranted if the SMF dosage was inadequate or inappropriate for the clinical condition treated. The purpose of this communication is to (1) provide a rationale and an explanation for each of 10 essential SMF dosing parameters that should be considered when conducting trials of SMF therapy, and (2) advocate for the conduct of Phase I studies to optimize SMF dosimetry for each condition prior to implementing a large-scale RCT. A previous critical review of SMF dosimetry in 56 clinical studies found that reporting SMF dosages in a majority of those studies was of such poor quality that the magnetic field exposure at the target tissue could not be characterized. Without knowing what magnetic field actually reached the target, it is impossible to judge dosage adequacy. In order to quantify SMF exposure at the site of pathology (target tissue/s), that site must be clearly named; the distance of the permanent magnet surface from the target must be delineated; the physical parameters of the applied permanent magnet must be described; and the dosing regimen must be precisely reported. If the SMF dosimetry is inadequate, any inferences drawn from reported negative findings are questionable.
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Affiliation(s)
- Agatha P Colbert
- Helfgott Research Institute, National College of Natural Medicine, Portland, OR 97201, USA.
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Colbert AP, Wahbeh H, Harling N, Connelly E, Schiffke HC, Forsten C, Gregory WL, Markov MS, Souder JJ, Elmer P, King V. Static magnetic field therapy: a critical review of treatment parameters. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2007; 6:133-9. [PMID: 18955243 PMCID: PMC2686626 DOI: 10.1093/ecam/nem131] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Static magnetic field (SMF) therapy, applied via a permanent magnet attached to the skin, is used by people worldwide for self-care. Despite a lack of established SMF dosage and treatment regimens, multiple studies are conducted to evaluate SMF therapy effectiveness. Our objectives in conducting this review are to:(i) summarize SMF research conducted in humans; (ii) critically evaluate reporting quality of SMF dosages and treatment parameters and (iii) propose a set of criteria for reporting SMF treatment parameters in future clinical trials. We searched 27 electronic databases and reference lists. Only English language human studies were included. Excluded were studies of electromagnetic fields, transcranial magnetic stimulation, magnets placed on acupuncture points, animal studies, abstracts, posters and editorials. Data were extracted on clinical indication, study design and 10 essential SMF parameters. Three reviewers assessed quality of reporting and calculated a quality assessment score for each of the 10 treatment parameters. Fifty-six studies were reviewed, 42 conducted in patient populations and 14 in healthy volunteers. The SMF treatment parameters most often and most completely described were site of application, magnet support device and frequency and duration of application. Least often and least completely described were characteristics of the SMF: magnet dimensions, measured field strength and estimated distance of the magnet from the target tissue. Thirty-four (61%) of studies failed to provide enough detail about SMF dosage to permit protocol replication by other investigators. Our findings highlight the need to optimize SMF dosing parameters for individual clinical conditions before proceeding to a full-scale clinical trial.
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Affiliation(s)
- Agatha P Colbert
- Helfgott Research Institute, National College of Natural Medicine, 049 SW, Porter Street, Portland, OR 97291, USA.
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Pittler MH, Brown EM, Ernst E. Static magnets for reducing pain: systematic review and meta-analysis of randomized trials. CMAJ 2007; 177:736-42. [PMID: 17893349 PMCID: PMC1976658 DOI: 10.1503/cmaj.061344] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Static magnets are marketed with claims of effectiveness for reducing pain, although evidence of scientific principles or biological mechanisms to support such claims is limited. We performed a systematic review and meta-analysis to assess the clinical evidence from randomized trials of static magnets for treating pain. METHODS Systematic literature searches were conducted from inception to March 2007 for the following data sources: MEDLINE, EMBASE, AMED (Allied and Complementary Medicine Database), CINAHL, Scopus, the Cochrane Library and the UK National Research Register. All randomized clinical trials of static magnets for treating pain from any cause were considered. Trials were included only if they involved a placebo control or a weak magnet as the control, with pain as an outcome measure. The mean change in pain, as measured on a 100-mm visual analogue scale, was defined as the primary outcome and was used to assess the difference between static magnets and placebo. RESULTS Twenty-nine potentially relevant trials were identified. Nine randomized placebo-controlled trials assessing pain with a visual analogue scale were included in the main meta-analysis; analysis of these trials suggested no significant difference in pain reduction (weighted mean difference [on a 100-mm visual analogue scale] 2.1 mm, 95% confidence interval -1.8 to 5.9 mm, p = 0.29). This result was corroborated by sensitivity analyses excluding trials of acute effects and conditions other than musculoskeletal conditions. Analysis of trials that assessed pain with different scales suggested significant heterogeneity among the trials, which means that pooling these data is unreliable. INTERPRETATION The evidence does not support the use of static magnets for pain relief, and therefore magnets cannot be recommended as an effective treatment. For osteoarthritis, the evidence is insufficient to exclude a clinically important benefit, which creates an opportunity for further investigation.
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Affiliation(s)
- Max H Pittler
- Complementary Medicine, Peninsula Medical School, Universities of Exeter and Plymouth, Exeter, UK.
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Harden RN, Remble TA, Houle TT, Long JF, Markov MS, Gallizzi MA. Prospective, Randomized, Single-Blind, Sham Treatment-Controlled Study of the Safety and Efficacy of an Electromagnetic Field Device for the Treatment of Chronic Low Back Pain: A Pilot Study. Pain Pract 2007; 7:248-55. [PMID: 17714104 DOI: 10.1111/j.1533-2500.2007.00145.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To evaluate the efficacy and safety of therapeutic electromagnetic fields (TEMF) on chronic low back pain. Secondary objectives included the investigation of the effects of TEMF on psychometric measures. SETTING Pain Research center in an Urban Academic Rehabilitation Facility. DESIGN Prospective, randomized, single-blind, placebo (sham) treatment-controlled design in which participants were evaluated over a 6-week period. A total of 40 subjects were randomly assigned: 20 subjects to 15 milliTESLA (mT) treatment using a prototype electromagnetic field device and 20 to sham treatment. INTERVENTIONS After a 2-week baseline period, eligible individuals were randomized to one of the treatment groups (sham or 15 mT) for six 30-minute treatments over 2 weeks, then a 2-week follow-up period. OUTCOME MEASURES The primary outcome measure was the self-report of pain severity using a 100 mm visual analog scale collected using a twice daily McGill Pain Questionnaire-Short Form. Several secondary measures were assessed. RESULTS Both groups (15 mT and sham) improved over time (P < 0.05). Although groups were similar during the treatment period, treated subjects (TEMF of 15 mT) improved significantly over sham treatment during the 2-week follow-up period (20.5% reduction in pain; F(1,34) = 10.62, P = 0.003). There were no reported serious adverse events. CONCLUSIONS This study demonstrates that TEMF may be an effective and safe modality for the treatment of chronic low back pain disorders. More studies are needed to test this hypothesis.
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Affiliation(s)
- R N Harden
- Center for Pain Studies, Chicago, Illinois 60611, USA.
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Cepeda MS, Carr DB, Sarquis T, Miranda N, Garcia RJ, Zarate C. Static magnetic therapy does not decrease pain or opioid requirements: a randomized double-blind trial. Anesth Analg 2007; 104:290-4. [PMID: 17242082 DOI: 10.1213/01.ane.0000230613.25754.08] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A growing multibillion dollar industry markets magnetic necklaces, bracelets, bands, insoles, back braces, mattresses, etc., for pain relief, although there is little evidence for their efficacy. We sought to evaluate the effect of magnetic therapy on pain intensity and opioid requirements in patients with postoperative pain. We designed a randomized, double-blind, controlled trial. One-hundred-sixty-five patients older than 12 yr of age were randomized to magnetic (n = 81) or sham therapy (n = 84) upon reporting moderate-to-severe pain in the postanesthesia care unit. Devices were placed over the surgical incision and left in place for 2 h. Patients rated their pain intensity on a 0-10 scale every 10 min and received incremental doses of morphine until pain intensity was < or =4 of 10. Pain intensity levels were similar in both groups. The magnet group had on average 0.04 U more pain intensity (95% confidence interval, -0.4 to 0.5) than the sham group. Opioid requirements also were similar in both groups. The active magnet group required 1.5 mg more morphine (95% confidence interval, -1.8 to 4.0) than the sham magnet group. Magnetic therapy lacks efficacy in controlling acute postoperative pain intensity levels or opioid requirements and should not be recommended for pain relief in this setting.
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Affiliation(s)
- M Soledad Cepeda
- Department of Anesthesia, San Ignacio Hospital, Bogota, Colombia.
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Taniguchi N, Kanai S. Efficacy of static magnetic field for locomotor activity of experimental osteopenia. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2006; 4:99-105. [PMID: 17342247 PMCID: PMC1810356 DOI: 10.1093/ecam/nel067] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Accepted: 08/26/2006] [Indexed: 11/24/2022]
Abstract
In order to examine the effectiveness of applying a static magnetic field (SMF) for increasing bone mineral density (BMD), we assessed the degree of osteopenia by dual-energy X-ray absorptiometry (DEXA), the metabolism measuring system, and histological examination of bone tissue in an ovariectomized (OVX) rat model. Thirty-six female Wistar rats (8 weeks old, 160–180 g) were divided into three groups. The rats in the OVX-M group were exposed to SMF for 12 weeks after ovariectomy. The ovariectomized rats in the OVX-D group were not exposed to SMF as a control. The rats in the normal group received neither ovariectomy nor exposure to SMF. Twelve-week exposure to SMF in the OVX-M group inhibited the reduction in BMD that was observed in the OVX-D group. Moreover, in the OVX rats, before exposure to SMF, there was no clear difference in the level of locomotor activity between the active and resting phases, and the pattern of locomotor activity was irregular. After exposure of OVX rats to SMF, the pattern of locomotor activity became diphasic with clear active and resting phases, as was observed in the normal group. In the OVX-M group, the continuity of the trabecular bone was maintained more favorably and bone mass was higher than the respective parameters in the OVX-D group. These results demonstrate that exposure to SMF increased the level of locomotor activity in OVX rats, thereby increasing BMD.
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Affiliation(s)
- Norimasa Taniguchi
- Kansai College of Oriental Medicine, 2-11-1 Wakaba Kumatori-cho Sennan-gun, Osaka 590-0482, Department of Pharmacology, Medicine Kinki University School of Medicine 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511 and Department of Science, Pip-Fujimoto Co. Ltd, 1-36 Noninbashi 2-choume, Chuo-ku, Osaka 540-0011, Japan
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Winemiller MH, Billow RG, Laskowski ER, Harmsen WS. Effect of magnetic vs sham-magnetic insoles on nonspecific foot pain in the workplace: a randomized, double-blind, placebo-controlled trial. Mayo Clin Proc 2005; 80:1138-45. [PMID: 16178493 DOI: 10.4065/80.9.1138] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To determine whether magnetic insoles are effective for relieving nonspecific subjective foot pain in the workplace, resulting in improved job satisfaction. SUBJECTS AND METHODS A prospective, randomized, double-blind, placebo-controlled study of health care employees who experienced nonspecific foot pain for at least 30 days, which occurred more days than not, was conducted between February 2001 and January 2002 at the Mayo Clinic in Rochester, Minn. Participants were asked to wear either magnetic or sham-magnetic cushioned insoles for at least 4 hours daily, 4 days per week for 8 weeks. The primary outcome variable was reported foot pain (by categorical response of change from baseline and by visual analog scale) at 4 and 8 weeks. Secondary outcome variables included graded intensity of pain experienced during various daily activities and the effect of insoles on job performance and enjoyment. RESULTS Among 89 enrolled participants, 6 either withdrew before wearing insoles or were noncompliant with follow-up questionnaires; 83 participants remained for full statistical analysis. Participants in both treatment groups reported improvements in foot pain during the study period. No significant differences in categorical response to pain or pain intensity were seen with use of magnetic vs sham-magnetic insoles. CONCLUSIONS The magnetic insoles used in this study by a heterogeneous population with chronic nonspecific foot pain were not clinically effective. Findings confirmed that nonspecific foot pain significantly interferes with some employees' ability to enjoy their jobs and that treatment of that pain improves job satisfaction.
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Affiliation(s)
- Mark H Winemiller
- Department of Physical Medicine and Rehabilitation, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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Eccles NK. A Critical Review of Randomized Controlled Trials of Static Magnets for Pain Relief. J Altern Complement Med 2005; 11:495-509. [PMID: 15992236 DOI: 10.1089/acm.2005.11.495] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The aim of this review was to establish whether there is evidence for or against the efficacy of static magnets to produce analgesia. METHODS A systematic literature review was undertaken of studies that compared the use of static magnets with an appropriate control for the treatment of pain. Study methods, their quality, and outcome were also reviewed. RESULTS Overall, 13 of the 21 studies reported a significant analgesic effect due to static magnets. Of the 18 better quality studies with 3 points or more on the quality assessment, 11 were positive and six were negative, and in one there was a non-significant trend towards a positive analgesic effect. In two of the negative studies, there are concerns over adequacy of magnet power for the type of pain, and in the other study of duration of exposure to the magnetic field. If these two studies are excluded on the grounds of inadequate treatment, then 11 out of 15 (73.3%) of the better quality studies demonstrated a positive effect of static magnets in achieving analgesia across a broad range of different types of pain (neuropathic, inflammatory, musculoskeletal, fibromyalgic, rheumatic, and postsurgical). CONCLUSIONS The weight of evidence from published, well-conducted controlled trials suggests that static magnetic fields are able to induce analgesia.
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Dillard JN, Knapp S. Complementary and Alternative Pain Therapy in the Emergency Department. Emerg Med Clin North Am 2005; 23:529-49. [PMID: 15829396 DOI: 10.1016/j.emc.2004.12.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
One primary reason patients go to emergency departments is for pain relief. Understanding the physiologic dynamics of pain, pharmacologic methods for treatment of pain, as well CAM therapies used in treatment of pain is important to all providers in emergency care. Asking patients about self-care and treatments used outside of the emergency department is an important part of the patient history. Complementary and alternative therapies are very popular for painful conditions despite the lack of strong research supporting some of their use. Even though evidenced-based studies that are double blinded and show a high degree of interrater observer reliability do not exist, patients will likely continue to seek out CAM therapies as a means of self-treatment and a way to maintain additional life control. Regardless of absolute validity of a therapy for some patients, it is the bottom line: "it seems to help my pain." Pain management distills down to a very simple endpoint, patient relief, and comfort. Sham or science, if the patient feels better, feels comforted, feels less stressed, and more functional in life and their practices pose no health risk, then supporting their CAM therapy creates a true wholistic partnership in their health care.CAM should be relatively inexpensive and extremely safe. Such is not always the case, as some patients have discovered with the use of botanicals. It becomes an imperative that all providers be aware of CAM therapies and informed about potential interactions and side effects when helping patients manage pain and explore adding CAM strategies for pain relief. The use of regulated breathing, meditation, guided imagery, or a massage for a pain sufferer are simple but potentially beneficial inexpensive aids to care that can be easily employed in the emergency department. Some CAM therapies covered here, while not easily practiced in the emergency department, exist as possibilities for exploration of patients after they leave, and may offer an improved sense of well-being and empowerment in the face of suffering and despair. The foundations of good nutrition, exercise, stress reduction, and reengagement in life can contribute much to restoring the quality of life to a pain patient. Adding nondrug therapies of physical therapy, cognitive-behavioral therapy, TENS, hypnosis, biofeedback, psychoanalysis, and others can complete the conventional picture. Adding in simple mind/body therapies, touch therapies, acupuncture, or others may be appropriate in select cases, and depending on the circumstances, may effect and enhance a conventional pain management program. Armed with an understanding of pain dynamics and treatments, practitioners can better meet patient needs, avoid serious side effects, and improve care when addressing pain management in the emergency department.
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Affiliation(s)
- James N Dillard
- Columbia University College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10032, USA
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Okano H, Masuda H, Ohkubo C. Decreased plasma levels of nitric oxide metabolites, angiotensin II, and aldosterone in spontaneously hypertensive rats exposed to 5 mT static magnetic field. Bioelectromagnetics 2005; 26:161-72. [PMID: 15768432 DOI: 10.1002/bem.20055] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Previously, we found that whole body exposure to static magnetic fields (SMF) at 10 mT (B(max)) and 25 mT (B(max)) for 2-9 weeks suppressed and delayed blood pressure (BP) elevation in young, stroke resistant, spontaneously hypertensive rats (SHR). In this study, we investigated the interrelated antipressor effects of lower field strengths and nitric oxide (NO) metabolites (NO(x) = NO(2)(-) + NO(3)(-)) in SHR. Seven-week-old male rats were exposed to two different ranges of SMF intensity, 0.3-1.0 mT or 1.5-5.0 mT, for 12 weeks. Three experimental groups of 20 animals each were examined: (1) no exposure with intraperitoneal (ip) saline injection (sham-exposed control); (2) 1 mT SMF exposure with ip saline injection (1 mT); (3) 5 mT SMF exposure with ip saline injection (5 mT). Arterial BP, heart rate (HR), skin blood flow (SBF), plasma NO metabolites (NO(x)), and plasma catecholamine levels were monitored. SMF at 5 mT, but not 1 mT, significantly suppressed and retarded the early stage development of hypertension for several weeks, compared with the age matched, unexposed (sham exposed) control. Exposure to 5 mT resulted in reduced plasma NO(x) concentrations together with lower levels of angiotensin II and aldosterone in SHR. These results suggest that SMF may suppress and delay BP elevation via the NO pathways and hormonal regulatory systems.
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Affiliation(s)
- Hideyuki Okano
- Department of Environmental Health, National Institute of Public Health, Tokyo 108-8638, Japan.
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Okano H, Ohkubo C. Exposure to a moderate intensity static magnetic field enhances the hypotensive effect of a calcium channel blocker in spontaneously hypertensive rats. Bioelectromagnetics 2005; 26:611-23. [PMID: 16189831 DOI: 10.1002/bem.20144] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We investigated the combined effects of a moderate intensity static magnetic field (SMF) and an L-type voltage-gated Ca(2+) channel blocker, nicardipine in stroke-resistant spontaneously hypertensive rats during the development of hypertension. Five-week-old male rats were exposed to SMF intensity up to 180 mT (B(max)) with a peak spatial gradient of 133 mT/mm for 14 weeks. Four experimental groups of 14 animals each were examined: (1) sham exposure with intraperitoneal (ip) saline injection (control); (2) SMF exposure with ip saline injection (SMF); (3) sham exposure with ip nicardipine injection (NIC); (4) SMF exposure with ip nicardipine injection (SMF + NIC). A disc-shaped permanent magnet or a dummy magnet was implanted in the vicinity adjacent to the left carotid sinus baroreceptor region in the neck of each rat. Nicardipine (2 mg/kg ip) was administered three times a week for 14 weeks, and then 15 min after each injection, arterial blood pressure (BP), heart rate (HR), baroreflex sensitivity (BRS), skin blood flow (SBF), skin blood velocity (SBV), plasma nitric oxide (NO) metabolites (NO(x) = NO(2) (-) + NO(3) (-)), plasma catecholamine levels and behavioral parameters of a functional observational battery were monitored. The action of nicardipine significantly decreased BP, and increased HR, SBF, SBV, plasma epinephrine and norepinephrine in the NIC group compared with the control respective age-matched group without changing plasma NO(x) levels. Neck exposure to SMF alone for 5-8 weeks significantly suppressed or retarded the development of hypertension together with increased BRS in SMF group. Furthermore, the exposure to SMF for 1-8 weeks significantly promoted the nicardipine-induced BP decrease in the SMF + NIC group compared with the respective NIC group. Moreover, the SMF induced a significant increase in plasma NO(x) in the nicardipine-induced hypotension. There were no significant differences in any of the physiological or behavioral parameters measured between the SMF + NIC and the NIC groups, nor between the SMF and the control groups. These results suggest that the SMF may enhance nicardipine-induced hypotension by more effectively antagonizing the Ca(2+) influx through the Ca(2+) channels compared with the NIC treatment alone. Furthermore, the enhanced antihypertensive effects of the SMF on the nicardipine-treated group appear to be partially related to the increased NO(x). Theoretical considerations suggest that the applied SMF (B(max) 40 mT, 0 Hz) can be converted into a changing magnetic field (B(max) 30-40 mT, 5.7-6.5 Hz or 7.5-8.3 Hz) in the baroreceptor region by means of the carotid artery pulsation. Therefore, we propose that the moderate intensity changing magnetic field, i.e., the magnetic field modulated by the pulse rate, may influence the activity of baroreceptor and baroreflex function.
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Affiliation(s)
- Hideyuki Okano
- Department of Environmental Health, National Institute of Public Health, Saitama, Japan.
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Questions and Answers About Using Magnets to Treat Pain. J Pain Palliat Care Pharmacother 2005. [DOI: 10.1080/j354v19n02_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Many cancer patients use therapies promoted as literal alternatives to conventional medical care. Such "alternative" modalities are unproven or were studied and found worthless. These can be harmful. An even greater proportion of cancer patients uses "complementary" therapies along with mainstream cancer treatment. Most are helpful adjunctive approaches that control symptoms and enhance quality of life. This review describes alternative as well as complementary therapies commonly used today by cancer patients. Herbal remedies also are discussed. Evidence regarding the efficacy and safety of complementary/alternative medicine (CAM) is reviewed, and implications for oncologists are discussed. To encourage open communication of CAM use by patients, oncologists should be knowledgeable about the most popular remedies and know where to find reliable information for themselves and for their patients.
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Affiliation(s)
- Barrie R Cassileth
- Integrative Medicine Service, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.
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Okano H, Masuda H, Ohkubo C. Effects of 25 mT static magnetic field on blood pressure in reserpine-induced hypotensive Wistar-Kyoto rats. Bioelectromagnetics 2004; 26:36-48. [PMID: 15605399 DOI: 10.1002/bem.20052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We investigated the interrelated antihypotensive effects of static magnetic fields (SMF) and plasma catecholamine levels in reserpine-induced hypotensive Wistar-Kyoto rats. Seven-week-old male rats were exposed to two different ranges of SMF intensities, 3.0-10 mT (Bmax) or 7.5-25 mT (Bmax) for 12 weeks. Six experimental groups of 10 animals each were examined: (1) no exposure with intraperitoneal (ip) saline injection (sham exposed control); (2) 10 mT SMF exposure with ip saline injection (10 mT); (3) 25 mT SMF exposure with ip saline injection (25 mT); (4) no exposure with ip reserpine injection (RES); (5) 10 mT SMF exposure with ip reserpine injection (10 mT + RES); (6) 25 mT SMF exposure with ip reserpine injection (25 mT + RES). Reserpine (5 mg/kg) was administered three times a week for 12 weeks, and 18 h after each injection, arterial blood pressure (BP), heart rate, skin blood flow, plasma nitric oxide metabolites, plasma catecholamine levels, and behavioral parameters of a functional observational battery (FOB) were monitored. The action of reserpine significantly decreased BP, reduced plasma norepinephrine (NE), increased the FOB hunched posture score and decreased the number of rearing events in the RES group, compared with the respective age-matched control group. Exposure to 25 mT, but not 10 mT, for 2-12 weeks significantly prevented the reserpine-induced decrease of BP in the 25 mT + RES group compared with the respective RES group. Moreover, exposure to 25 mT for 5 weeks partially suppressed the reserpine-induced NE reduction, but did not bring about a complete reversal of reserpine effects. NE levels for the 25 mT + RES group for 5 weeks were significantly higher compared with the RES group, but still lower compared with the control group. In addition, the FOB hunched posture score for the 25 mT + RES group was significantly lower and the number of rearing events was higher compared with the RES group, but these behavioral parameters did not revert to control levels. There were no significant differences in any of the physiological or behavioral parameters measured between the 10 mT + RES and RES groups, nor between the two different SMF groups and the control group. These results indicate that 25 mT SMF with spatial gradients significantly suppressed the reserpine-induced hypotension and bradykinesia. The antihypotensive effects of SMF on the reserpine-treated group might be at least partially related to the inhibition of NE depletion.
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Affiliation(s)
- Hideyuki Okano
- Department of Environmental Health, National Institute of Public Health, Shirokanedai, Minato-ku, Tokyo, Japan.
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Abstract
Analgesic electrotherapy is now based on more consistent scientific data; the biological action of the electric current, of the electromagnetic radiations and of the mechanical vibrations is better approached. But the randomized control trials still provide contradictory results concerning the analgesic efficiency of the cryotherapy, the TENS, the pulsed electro-magnetic fields, the ultrasound and laser therapy, the shock waves; iontophoresis, short waves, microwaves, infrasound vibrations are very few investigated. The analgesic electrotherapy cannot be recommended nor prohibited; physical agents represent only therapeutic options. On the basis of the scientific data and of their personal experience, the therapists can use them. More controlled clinical investigations of higher methodological levels are still required.
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Affiliation(s)
- C-F Roques
- Service de médecine physique et de réadaptation, CHU de Toulouse, hôpital Rangueil, 1, avenue du Professeur-Poulhès, 31403 Toulouse 4, France.
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Salvatore JR, Harrington J, Kummet T. Phase I clinical study of a static magnetic field combined with anti-neoplastic chemotherapy in the treatment of human malignancy: initial safety and toxicity data. Bioelectromagnetics 2003; 24:524-7. [PMID: 12955758 DOI: 10.1002/bem.10149] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We have completed the lowest level of exposure in a Phase I study, designed to establish the safety and toxicity of the combination of a static magnetic field (SMF) and antineoplastic chemotherapy in patients with advanced malignancy. The SMF application is carefully controlled by applying the magnet to the patient only in our clinic during chemotherapy administration. No increase in the severity of chemotherapy toxicity as measured by white blood cell count and platelet count was seen in the participants exposed to SMF compared to the historical control subjects. These data have permitted the next group of subjects to be treated at the next dose level.
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Affiliation(s)
- Joseph R Salvatore
- Division of Hematology-Oncology, Carl T Hayden VA Medical Center, Phoenix, Arizona 85012, USA.
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Okano H, Ohkubo C. Effects of static magnetic fields on plasma levels of angiotensin II and aldosterone associated with arterial blood pressure in genetically hypertensive rats. Bioelectromagnetics 2003; 24:403-12. [PMID: 12929159 DOI: 10.1002/bem.10139] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Effects of static magnetic fields (SMFs) on development of hypertension were investigated using young male, stroke resistant, spontaneously hypertensive rats (SHRs) beginning at 7 weeks of age. SHRs were randomly assigned to two different exposure groups or an unexposed group. The SHRs in the exposure groups were constantly exposed to two different types of external SMFs of 3.0-10.0 mT or 8.0-25.0 mT for 12 weeks. The SMFs were generated from permanent magnetic plates attached to the rat cage. The blood pressure (BP) of each rat was determined at weekly intervals using indirect tail-cuff method. The SMFs suppressed and retarded the development of hypertension in both exposed groups to a statistically significant extent for several weeks, as compared with an unexposed group. The antipressor effects were related to the extent of reduction in plasma levels of angiotensin II and aldosterone in the SHRs. These results suggest that the SMFs of mT intensities with spatial gradients could be attributable to suppression of early BP elevation via hormonal regulatory system.
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Affiliation(s)
- Hideyuki Okano
- Department of Environmental Health, National Institute of Public Health, Tokyo, Japan.
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