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Marsili F, Potgieter P, Birkill CF. Adaptive Autonomic and Neuroplastic Control in Diabetic Neuropathy: A Narrative Review. Curr Diabetes Rev 2024; 20:38-54. [PMID: 38018186 DOI: 10.2174/0115733998253213231031050044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/31/2023] [Accepted: 09/28/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is a worldwide socioeconomic burden, and is accompanied by a variety of metabolic disorders, as well as nerve dysfunction referred to as diabetic neuropathy (DN). Despite a tremendous body of research, the pathogenesis of DN remains largely elusive. Currently, two schools of thought exist regarding the pathogenesis of diabetic neuropathy: a) mitochondrial-induced toxicity, and b) microvascular damage. Both mechanisms signify DN as an intractable disease and, as a consequence, therapeutic approaches treat symptoms with limited efficacy and risk of side effects. OBJECTIVE Here, we propose that the human body exclusively employs mechanisms of adaptation to protect itself during an adverse event. For this purpose, two control systems are defined, namely the autonomic and the neural control systems. The autonomic control system responds via inflammatory and immune responses, while the neural control system regulates neural signaling, via plastic adaptation. Both systems are proposed to regulate a network of temporal and causative connections which unravel the complex nature of diabetic complications. RESULTS A significant result of this approach infers that both systems make DN reversible, thus opening the door to novel therapeutic applications.
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Affiliation(s)
| | - Paul Potgieter
- Research Department, Algiamed Technologies, Burnaby, Canada
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2
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Tassone EE, Page JC, Slepian MJ. Assessing the Effects of Pulsed Electromagnetic Therapy on Painful Diabetic Distal Symmetric Peripheral Neuropathy: A Double-Blind Randomized Controlled Trial. J Diabetes Sci Technol 2023:19322968231190413. [PMID: 37542366 DOI: 10.1177/19322968231190413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
BACKGROUND Significant complications of diabetes include pain and the loss of sensation in peripheral limbs. Pain management of diabetic symmetric peripheral neuropathy (DSPN) remains challenging. This study reports on utilizing pulsed electromagnetic field therapy (PEMF) to reduce pain and improve skin perfusion pressure (SPP) in subjects with DSPN. METHODS A randomized, sham-controlled, double-blind, clinical trial was conducted on subjects afflicted with foot pain associated with DSPN. Following informed consent, 182 subjects with diabetes and confirmed DSPN were entered into the trial for a period of 18 weeks. Subjects were randomized into active PEMF treatment or nonactive sham and instructed to treat to their feet for 30 minutes, twice daily and report daily pain scores. Some patients in the active arm experienced a transient low field strength notification (LFSN) due to improper pad placement during treatment. Skin perfusion pressure measurements were also collected at two and seven weeks to assess peripheral arterial disease effects via measurement of local microcirculatory flow and blood pressure. RESULTS Patients in the active arm who did not receive an LFSN experienced a clinically significant 30% reduction in pain from baseline compared to sham (P < .05). Though not statistically significant, SPP in the active group trended toward improvement compared to sham. CONCLUSIONS Pulsed electromagnetic field therapy appears effective as a nonpharmacological means for reduction of pain associated with diabetic peripheral neuropathy and holds promise for improvement of vascular physiology in microcirculatory dysfunction associated with diabetic peripheral arterial disease.
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Affiliation(s)
| | | | - Marvin J Slepian
- Sarver Heart Center, Departments of Medicine and Biomedical Engineering, The University of Arizona, Tucson, AZ, USA
- Arizona Center for Accelerated Biomedical Innovation, The University of Arizona, Tucson, AZ, USA
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3
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Ding R, Zhu S, Zhao X, Yue R. Vascular endothelial growth factor levels in diabetic peripheral neuropathy: a systematic review and meta-analysis. Front Endocrinol (Lausanne) 2023; 14:1169405. [PMID: 37251664 PMCID: PMC10213658 DOI: 10.3389/fendo.2023.1169405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023] Open
Abstract
Objective Vascular endothelial growth factors (VEGFs, including VEGF-A, VEGF-B, VEGF-C, VEGF-D and PLGF) have important roles in the development and function of the peripheral nervous system. Studies have confirmed that VEGFs, especially VEGF-A (so called VEGF) may be associated with the diabetic peripheral neuropathy (DPN) process. However, different studies have shown inconsistent levels of VEGFs in DPN patients. Therefore, we conducted this meta-analysis to evaluate the relationship between cycling levels of VEGFs and DPN. Methods This study searched 7 databases, including PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), VIP Database, WanFang Database, and Chinese Biomedical Literature (CBM), to find the target researches. The random effects model was used to calculate the overall effect. Results 14 studies with 1983 participants were included, among which 13 studies were about VEGF and 1 was VEGF-B, so only the effects of VEGF were pooled. The result showed that there were obviously increased VEGF levels in DPN patients compared with diabetic patients without DPN (SMD:2.12[1.34, 2.90], p<0.00001) and healthy people (SMD:3.50[2.24, 4.75], p<0.00001). In addition, increased circulating VEGF levels were not associated with an increased risk of DPN (OR:1.02[0.99, 1.05], p<0.00001). Conclusion Compared with healthy people and diabetic patients without DPN, VEGF content in the peripheral blood of DPN patients is increased, but current evidence does not support the correlation between VEGF levels and the risk of DPN. This suggests that VEGF may play a role in the pathogenesis and repairment of DPN.
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Affiliation(s)
- Rui Ding
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shicong Zhu
- Department of Respiratory, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyan Zhao
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Rensong Yue
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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4
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Mert T, Sahin E, Yaman S, Sahin M. Pulsed magnetic field treatment ameliorates the progression of peripheral neuropathy by modulating the neuronal oxidative stress, apoptosis and angiogenesis in a rat model of experimental diabetes. Arch Physiol Biochem 2022; 128:1658-1665. [PMID: 32633145 DOI: 10.1080/13813455.2020.1788098] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The present study aimed to investigate the possible anti-neuropathic effects of daily pulsed magnetic field treatments (PMF) in streptozotocin (60 mg/kg) induced 4 weeks diabetic (type-1) wistar rats (6-8 months). MATERIALS AND METHODS Body mass, blood glucose and thermal and mechanical sensations were evaluated during the PMF or sham-PMF in diabetic or non-diabetic rats (n = 7/group). After the measurements of motor nerve conduction velocities (MNCV), the levels of several biomarkers for oxidative stress, apoptosis and angiogenesis in spinal cord and sciatic nerve were measured. RESULTS PMF for 4 weeks significantly recovered the MCNV (96.9% and 63.9%) and almost fully (100%) restored to the latency and threshold. PMF also significantly suppressed the diabetes induced enhances in biochemical markers of both neuronal tissues. CONCLUSIONS Findings suggested that PMF might prevent the development of functional abnormalities in diabetic rats due to its anti-oxidative, anti-apoptotic and anti-angiogenic actions in neuronal tissues.
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Affiliation(s)
- Tufan Mert
- Department of Biophysics, Faculty of Medicine, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Emel Sahin
- Department of Medical Biology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Selma Yaman
- Department of Biophysics, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - Mehmet Sahin
- Department of Medical Biology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
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5
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Coskun C, Ocal I, Gunay I. A Low-Frequency Pulsed Magnetic Field Reduces Neuropathic Pain by Regulating NaV 1.8 and NaV 1.9 Sodium Channels at the Transcriptional Level in Diabetic Rats. Bioelectromagnetics 2021; 42:357-370. [PMID: 33998011 DOI: 10.1002/bem.22343] [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] [Received: 07/30/2020] [Revised: 12/14/2020] [Accepted: 04/09/2021] [Indexed: 12/19/2022]
Abstract
Low-frequency pulsed magnetic field (LF-PMF) application is a non-invasive, easy, and inexpensive treatment method in pain management. However, the molecular mechanism underlying the effect of LF-PMF on pain is not fully understood. Considering the obvious dysregulations of gene expression observed in certain types of voltage-gated sodium channels (VGSCs) in pain conditions, the present study tested the hypothesis that LF-PMF shows its pain-relieving effect by regulating genes that code VGSCs proteins. Five experimental rat groups (Control, Streptozotocin-induced experimental painful diabetic neuropathy (PDN), PDN Sham, PDN 10 Hz PMF, and PDN 30 Hz PMF) were established. After the pain formation in PDN groups, the magnetic field groups were exposed to 10/30 Hz, 1.5 mT PMF for 4 weeks, an hour daily. Progression of pain was evaluated using behavioral pain tests during the entire experimental processes. After the end of PMF treatment, SCN9A (NaV1.7 ), SCN10A (NaV1.8 ), SCN11A (NaV1.9 ), and SCN3A (NaV1.3 ) gene expression level changes were determined by analyzing real-time polymerase chain reaction results. We found that 10 Hz PMF application was more effective than 30 Hz on pain management. In addition, NaV1.7 and NaV1.3 transcriptions were upregulated while NaV1.8 and NaV1.9 were downregulated in painful conditions. Notably, the downregulated expression of the genes encoding NaV1.8 and NaV1.9 were re-regulated and increased to control level by 10 Hz PMF application. Consequently, it may be deduced that 10 Hz PMF application reduces pain by modulating certain VGSCs at the transcriptional level. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
- Cagil Coskun
- Department of Biophysics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Isil Ocal
- Department of Biophysics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Ismail Gunay
- Department of Biophysics, Faculty of Medicine, Cukurova University, Adana, Turkey
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6
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Long-term treatment with transcranial pulsed electromagnetic fields improves movement speed and elevates cerebrospinal erythropoietin in Parkinson's disease. PLoS One 2021; 16:e0248800. [PMID: 33909634 PMCID: PMC8081215 DOI: 10.1371/journal.pone.0248800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 03/04/2021] [Indexed: 12/01/2022] Open
Abstract
Background Parkinson’s disease is characterized by motor dysfunctions including bradykinesia. In a recent study, eight weeks of daily transcranial stimulation with bipolar pulsed electromagnetic fields improved functional rate of force development and decreased inter-hand tremor coherence in patients with mild Parkinson’s disease. Objective To investigate the effect of long-term treatment with transcranial bipolar pulsed electromagnetic fields on motor performance in terms of movement speed and on neurotrophic and angiogenic factors. Methods Patients diagnosed with idiopathic Parkinson’s disease had either daily 30-min treatment with bipolar (±50 V) transcranial pulsed electromagnetic stimulation (squared pulses, 3ms duration) for three eight-week periods separated by one-week pauses (T-PEMF group) (n = 16) or were included in a PD-control group (n = 8). Movement speed was assessed in a six-cycle sit-to-stand task performed on a force plate. Cerebrospinal fluid and venous blood were collected and analyzed for erythropoietin and vascular endothelial growth factor. Results Major significant improvement of movement speed compared to the natural development of the disease was found (p = 0.001). Thus, task completion time decreased gradually during the treatment period from 10.10s to 8.23s (p<0.001). The untreated PD-control group did not change (p = 0.458). The treated group did not differ statistically from that of a healthy age matched reference group at completion of treatment. Erythropoietin concentration in the cerebrospinal fluid also increased significantly in the treated group (p = 0.012). Conclusion Long-term treatment with transcranial bipolar pulsed electromagnetic fields increased movement speed markedly and elevated erythropoietin levels. We hypothesize that treatment with transcranial bipolar pulsed electromagnetic fields improved functional performance by increasing dopamine levels in the brain, possibly through erythropoietin induced neural repair and/or protection of dopaminergic neurons.
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Yu B, Liu J, Cheng J, Zhang L, Song C, Tian X, Fan Y, Lv Y, Zhang X. A Static Magnetic Field Improves Iron Metabolism and Prevents High-Fat-Diet/Streptozocin-Induced Diabetes. ACTA ACUST UNITED AC 2021; 2:100077. [PMID: 34557734 PMCID: PMC8454665 DOI: 10.1016/j.xinn.2021.100077] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022]
Abstract
Type 2 diabetes (T2D) is a metabolic disorder with high prevalence and severe complications that has recently been indicated to be treatable by a combined static magnetic field (SMF) and electric field. We systematically compared four types of SMFs and found that a downward SMF of ∼100 mT could effectively reduce the development of hyperglycemia, fatty liver, weight gain, and tissue injury in high-fat-diet (HFD)/streptozocin-induced T2D mice, but not the upward SMF. The downward SMF markedly restored the Bacteroidetes population and reversed the iron complex outer membrane receptor gene reduction in the mice gut microbiota, and reduced iron deposition in the pancreas. SMF also reduced the labile iron and reactive oxygen species level in pancreatic Min6 cells in vitro and prevented palmitate-induced Min6 cell number reduction. Therefore, this simple SMF setting could partially prevent HFD-induced T2D development and ameliorate related symptoms, which could provide a low-cost and non-invasive physical method to prevent and/or treat T2D in the future.
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Affiliation(s)
- Biao Yu
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230036, P.R. China
| | - Juanjuan Liu
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, P.R. China
| | - Jing Cheng
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, P.R. China
| | - Lei Zhang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China
| | - Chao Song
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230036, P.R. China
| | - Xiaofei Tian
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, P.R. China
| | - Yixiang Fan
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230036, P.R. China
| | - Yue Lv
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230036, P.R. China
| | - Xin Zhang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, P.R. China.,Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230036, P.R. China.,Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, P.R. China
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8
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Shanb AA, Youssef EF, Al Baker WI, Al-Khamis FA, Hassan A, Jatoi NA. The Efficacy of Adding Electromagnetic Therapy or Laser Therapy to Medications in Patients With Diabetic Peripheral Neuropathy. J Lasers Med Sci 2020; 11:20-28. [PMID: 32099623 DOI: 10.15171/jlms.2020.05] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Introduction: Diabetes mellitus (DM) is a common disease with a highly significant burden among the Saudi population. This study aimed to investigate the effects of adding either magnetic or laser therapy to medications in patients with diabetic peripheral neuropathy (DPN). Methods: Seventy-one medically controlled diabetic patients were randomly assigned to 1) Magnetic group: 26 patients were exposed to magnetic therapy for 20 minutes/session, 2 sessions/week, for 3 months 2) Laser group: 25 patients were exposed to laser therapy with intensity 5.7 J/cm2 for 30 minutes/session, 2 times/week, for 3 months. 3) Drug group: 20 patients received only the regular medications for diabetic control and pain analgesia. Pain and neuropathy were assessed by the visual analog scale (VAS) and the Toronto Clinical Neuropath Scoring System (TRCNSS). Conduction velocities and amplitudes of peroneal and sural nerves were measured by electromyography. Results: The results showed significant increases in conduction velocities and amplitudes in both magnetic and laser groups in parallel with significant reductions in TRCNSS. Non-significant changes were obtained only after using only medications (P >0.05). The mean values of VAS reduced significantly in the three groups. The least significant differences showed significant changes among the three groups, whereas non-significant differences were obtained between both magnetic and laser groups. Conclusion: There were non-significant differences between both magnetic and laser therapy groups. Addition of either magnetic or laser therapy to medications could bring extra positive benefits to patients with DPN. Both magnetic and laser therapy can be applied with medications for the treatment of patients with DPN.
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Affiliation(s)
- Alsayed A Shanb
- Department of Physical Therapy, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, KSA
| | - Enas F Youssef
- Department of Physical Therapy, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, KSA
| | - Waleed I Al Baker
- Department of Internal Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, KSA 3
| | - Fahd A Al-Khamis
- Department of Neurology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, KSA 4
| | - Ali Hassan
- Department of Neurology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, KSA 4
| | - Noor-Ahmad Jatoi
- Department of Internal Medicine, King Fahd University Hospital and College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, KSA
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Li J, Hu X, Liang F, Liu J, Zhou H, Liu J, Wang H, Tang H. Therapeutic effects of moxibustion simultaneously targeting Nrf2 and NF-κB in diabetic peripheral neuropathy. Appl Biochem Biotechnol 2019; 189:1167-1182. [PMID: 31209719 PMCID: PMC6882806 DOI: 10.1007/s12010-019-03052-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/22/2019] [Indexed: 01/09/2023]
Abstract
Moxibustion is the main alternative medicine treatment that has been beneficial to diabetic peripheral neuropathy (DPN), a common complication secondary to diabetic microvascular injury. However, the underlying protective mechanism of moxibustion against neuroinflammation remains unclear. We hypothesized that moxibustion treats DPN by regulating the balance of nuclear factor-2 erythroid-related factor-2 (Nrf2)-nuclear factor-kappa light chain enhancer of B cells (NF-кB). In vivo, diabetes was induced in rats by injecting streptozotocin (STZ; 60 mg/kg; i.p.). Moxibustion was then applied to “Zusanli” (ST 36), “Guanyuan” (BL 26), and “Yishu” (EX-B 3) acupuncture points. Nerve conduction was detected. Serum interleukin (IL)-1β, IL-6, and IL-8 levels were determined through enzyme-linked immunosorbent assay. NF-κB and Nrf2 proteins were examined through immunoblot analysis. The mRNA of NF-κB and Nrf2 was evaluated through RT-PCR. We found that the conduction velocity and amplitude of the action potentials of sciatic nerve conduction were reduced in the DPN model group but were rescued by moxibustion treatment. Moxibustion also improved the effect of DPN on other parameters, including ultrastructural changes, NF-κB and Nrf2 expression in the sciatic nerve, and serum IL-1β, IL-6, and IL-8 levels. Our data suggested that moxibustion may alleviate neuroinflammation by inhibiting NF-κB and by activating Nrf2. Moxibustion may also provide therapeutic effects for patients with DPN by simultaneously targeting Nrf2 and NF-κB.
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Affiliation(s)
- Jia Li
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China
| | - Xia Hu
- College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, 430061, China
| | - Fengxia Liang
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China
| | - Jianmin Liu
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China
| | - Huanjiao Zhou
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China
| | - Jiaoping Liu
- Department of Oncology, Integrated Chinese and Western Medicines, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, 430010, China
| | - Hua Wang
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China.
| | - Hongtu Tang
- Hubei University of Chinese Medicine/Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Wuhan, 430061, China.
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10
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Li Y, Zhang Y, Wang W, Zhang Y, Yu Y, Cheing GLY, Pan W. Effects of pulsed electromagnetic fields on learning and memory abilities of STZ-induced dementia rats. Electromagn Biol Med 2019; 38:123-130. [DOI: 10.1080/15368378.2019.1591437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yue Li
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
| | - Yingchao Zhang
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Weihong Wang
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Yuxia Zhang
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
| | - Yang Yu
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
| | - Gladys Lai-Ying Cheing
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, SAR, China
| | - Weidong Pan
- Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China
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11
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Jensen BR, Malling ASB, Morberg BM, Gredal O, Bech P, Wermuth L. Effects of Long-Term Treatment with T-PEMF on Forearm Muscle Activation and Motor Function in Parkinson's Disease. Case Rep Neurol 2018; 10:242-251. [PMID: 30283322 PMCID: PMC6167712 DOI: 10.1159/000492486] [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: 06/15/2018] [Accepted: 07/24/2018] [Indexed: 11/27/2022] Open
Abstract
Bipolar pulsed electromagnetic stimulation applied to the brain (T-PEMF) is a non-pharmacological treatment which has been shown to stimulate nerve growth, attenuate nerve abnormalities, and improve microcirculation. We report on a 62-year-old, medically well-treated man with idiopathic Parkinson's disease. He was treated with T-PEMF, 30 min per day for three 8-week periods separated by two 1-week breaks. The disease made his handwriting impossible to read mainly due to small letters and lack of fluency. Forearm EMG measured during standardized conditions showed an involuntary spiky EMG pattern with regular burst activity (on his left side) at baseline. The intervention normalized the handwriting and forearm EMG. The UPDRS-motor score decreased from 25 to 17, and UPDRS-II-handwriting decreased from a pre-intervention value of 3 to 0 after the intervention. Finally, the patient reported improved fine motor function, less muscle stiffness, less muscle cramps and tingling, and less fatigue during the day in response to the T-PEMF treatment. The improved handwriting lasted for approximately 3 months after the treatment. Our results should be considered as preliminary, and large-scale, controlled studies are recommended to elucidate the therapeutic potential of long-term treatment with T-PEMF.
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Affiliation(s)
- Bente Rona Jensen
- Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Anne Sofie Bøgh Malling
- Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Bo Mohr Morberg
- Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Ole Gredal
- The Danish Rehabilitation Centre for Neuromuscular Diseases, Taastrup, Denmark
| | - Per Bech
- Psychiatric Research Unit, Psychiatric Centre North Zealand, University of Copenhagen, Hillerød, Denmark
| | - Lene Wermuth
- Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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12
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Ocal I, Yilmaz MB, Kocaturk-Sel S, Tufan T, Erkoc MA, Comertpay G, Oksuz H, Barc ED. ATP sensitive K + channel subunits (Kir6.1, Kir6.2) are the candidate mediators regulating ameliorating effects of pulsed magnetic field on aortic contractility in diabetic rats. Bioelectromagnetics 2018; 39:299-311. [PMID: 29446477 DOI: 10.1002/bem.22111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 12/13/2017] [Indexed: 11/11/2022]
Abstract
Diabetes mellitus is a metabolic disease that causes increased morbidity and mortality in developed and developing countries. With recent advancements in technology, alternative treatment methods have begun to be investigated in the world. This study aims to evaluate the effect of pulsed magnetic field (PMF) on vascular complications and contractile activities of aortic rings along with Kir6.1 and Kir6.2 subunit expressions of ATP-sensitive potassium channels (KATP ) in aortas of controlled-diabetic and non-controlled diabetic rats. Controlled-diabetic and non-controlled diabetic adult male Wistar rats were exposed to PMF for a period of 6 weeks according to the PMF application protocol (1 h/day; intensity: 1.5 mT; consecutive frequency: 1, 10, 20, and 40 Hz). After PMF exposure, body weight and blood glucose levels were measured. Then, thoracic aorta tissue was extracted for relaxation-contraction and Kir6.1 and Kir6.2 expression experiments. Blood plasma glucose levels, body weight, and aortic ring contraction percentage decreased in controlled-diabetic rats but increased in non-controlled diabetic rats. PMF therapy repressed Kir6.1 mRNA expression in non-controlled diabetic rats but not in controlled diabetic rats. Conversely, Kir6.2 mRNA expressions were repressed both in controlled diabetic and non-controlled diabetic rats by PMF. Our findings suggest that the positive therapeutic effects of PMF may act through (KATP ) subunits and may frequently occur in insulin-free conditions. Bioelectromagnetics. 39:299-311, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Isil Ocal
- Faculty of Medicine, Department of Biophysics, Cukurova University, Adana, Turkey
| | - Mehmet B Yilmaz
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Sabriye Kocaturk-Sel
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Turan Tufan
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Mehmet A Erkoc
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Gamze Comertpay
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Hale Oksuz
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
| | - Esma D Barc
- Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey
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13
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Li F, Lei T, Xie K, Wu X, Tang C, Jiang M, Liu J, Luo E, Shen G. Effects of extremely low frequency pulsed magnetic fields on diabetic nephropathy in streptozotocin-treated rats. Biomed Eng Online 2016; 15:8. [PMID: 26786255 PMCID: PMC4717615 DOI: 10.1186/s12938-015-0121-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 12/22/2015] [Indexed: 12/31/2022] Open
Abstract
Background Extremely low frequency pulsed magnetic fields (ELFPMF) have been shown to induce Faraday currents and measurable effects on biological systems. A kind of very high frequency electromagnetic field was reported that it improved the symptoms of diabetic nephropathy (DN) which is a major complication of diabetes. However, few studies have examined the effects of ELFPMF DN at the present. The present study was designed to investigate the effects of ELFPMF on DN in streptozotocin (STZ)–induced type 1 diabetic rats. Methods Adult male SD rats were randomly divided into three weight-matched groups: Control (non-diabetic rats without DN), DN + ELFPMF (diabetic rats with DN exposed to ELFPMF, 8 h/days, 6 weeks) and DN (diabetic rats with DN exposed to sham ELFPMF). Renal morphology was examined by light and electron microscopy, vascular endothelial growth factor (VEGF)-A and connective tissue growth factor (CTGF) were measured by enzyme linked immune sorbent assay. Results After 6 weeks’ ELFPMF exposure, alterations of hyperglycemia and weight loss in STZ-treated rats with DN were not found, while both positive and negative effects of ELFPMF on the development of DN in diabetic rats were observed. The positive one was that ELFPMF exposure attenuated the pathological alterations in renal structure observed in STZ-treated rats with DN, which were demonstrated by slighter glomerular and tubule-interstitial lesions examined by light microscopy and slighter damage to glomerular basement membrane and podocyte foot processes examined by electron microscopy. And then, the negative one was that ELFPMF stimulation statistically significantly decreased renal expression of VEGF-A and statistically significantly increased renal expression of CTGF in diabetic rats with DN, which might partially aggravate the symptoms of DN. Conclusion Both positive and negative effects of ELFPMF on the development of DN in diabetic rats were observed. The positive effect induced by ELFPMF might play a dominant role in the procession of DN in diabetic rats, and it is suggested that the positive effect should be derived from the correction of pathogenic diabetes-induced mediators.
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Affiliation(s)
- Feijiang Li
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Tao Lei
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Kangning Xie
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Xiaoming Wu
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Chi Tang
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Maogang Jiang
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Juan Liu
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Erping Luo
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
| | - Guanghao Shen
- School of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
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14
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Controversies related to electromagnetic field exposure on peripheral nerves. J Chem Neuroanat 2016; 75:70-6. [PMID: 26718608 DOI: 10.1016/j.jchemneu.2015.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/10/2015] [Accepted: 12/11/2015] [Indexed: 11/23/2022]
Abstract
Electromagnetic field (EMF) is a pervasive environmental presence in modern society. In recent years, mobile phone usage has increased rapidly throughout the world. As mobile phones are generally held close to the head while talking, studies have mostly focused on the central and peripheral nervous system. There is a need for further research to ascertain the real effect of EMF exposure on the nervous system. Several studies have clearly demonstrated that EMF emitted by cell phones could affect the systems of the body as well as functions. However, the adverse effects of EMF emitted by mobile phones on the peripheral nerves are still controversial. Therefore, this review summarizes current knowledge on the possible positive or negative effects of electromagnetic field on peripheral nerves.
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15
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Pulsed electromagnetic field (PEMF) promotes collagen fibre deposition associated with increased myofibroblast population in the early healing phase of diabetic wound. Arch Dermatol Res 2015; 308:21-9. [DOI: 10.1007/s00403-015-1604-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 10/06/2015] [Accepted: 10/13/2015] [Indexed: 12/31/2022]
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16
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ZHOU ZY, REN LW, YANG HY, LIU JZ, CHU KD, WENG JP, YU ZW. Effect of short-term acumagnetotherapy on diabetic kidney disease in patients with type II diabetes and study on the molecular mechanism. WORLD JOURNAL OF ACUPUNCTURE-MOXIBUSTION 2015. [DOI: 10.1016/s1003-5257(15)30056-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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17
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Efficacy and safety evaluation of systemic extremely low frequency magnetic fields used in the healing of diabetic foot ulcers--phase II data. Arch Med Res 2015; 46:470-8. [PMID: 26226416 DOI: 10.1016/j.arcmed.2015.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 07/16/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND AIMS Cellular and animal models investigating extremely low frequency magnetic fields (ELF-MF) have reported promotion of leukocyte-endothelial interactions, angiogenesis, myofibroblast and keratinocyte proliferation, improvement of peripheral neuropathy and diabetic wound healing. In humans, it has also been reported that systemic exposure to ELF-MF stimulates peripheral blood mononuclear cells, promoting angiogenesis and healing of chronic leg ulcers. The aim of the study was to investigate the effect of exposing different blood volumes to specific ELF-MFs (120 Hz sinusoidal waves of 0.4-0.9 mT RMS) to induce healing of diabetic foot ulcers (DFUs). METHODS Twenty six diabetic patients with non-responsive DFUs were divided into two exposure groups to receive treatment and record healing time. The forearm group, exposed to ELF-MF 2 h/day, twice weekly (3.6 l of blood/session); and the thorax group, exposed 25 min/day, 2 times/week (162.5 l of blood/session). Treatment period was 100 days or upon complete healing. Ulcer recurrences and adverse effects were investigated during short-term (<1 year) and long-term (3.4-7.8 years) follow-up. RESULTS Mean healing time was 61.48 ± 33.08 days in the forearm group and 62.56 ± 29.33 days for the thorax group. No adverse effects or ulcer recurrences in the original ulcer site were reported during treatment, the short-term follow-up period or the long-term follow-up period in both groups. CONCLUSIONS Healing time was independent of the amount of blood exposed to ELF-MF used in this trial. ELF-MFs are effective and safe and could be applied to non-healing DFUs in conjunction with other preventive interventions to reduce DFUs complications.
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18
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Li RL, Huang JJ, Shi YQ, Hu A, Lu ZY, Weng L, Wang SQ, Han YP, Zhang L, Hao CN, Duan JL. Pulsed electromagnetic field improves postnatal neovascularization in response to hindlimb ischemia. Am J Transl Res 2015; 7:430-444. [PMID: 26045885 PMCID: PMC4448185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
Pulsed electromagnetic fields (PEMF) have been shown to promote proliferation and regeneration in the damaged tissue. Here, we examined whether PEMF therapy improved postnatal neovascularization using murine model of hindlimb ischemia, and the underlying cellular/molecular mechanisms were further investigated. Hindlimb ischemia was induced by unilateral femoral artery resection using 6-8 week-old male C57BL6 mice. Then, mice were exposed to extracorporeal PEMF therapy (4 cycles, 8min/cycle, 30 ± 3 Hz, 5 mT) every day until day 14. Our data demonstrated that PEMF therapy significantly accelerated wound healing, decreased prevalence of gangrene and increased postnatal neovascularization. Moreover, the levels of vascular endothelial growth factor (VEGF), endothelial nitric oxide synthase (eNOS) and Akt phosphorylation in ischemic muscles were markedly enhanced following PEMF therapy. In vitro, PEMF inhibited the process of hypoxia-induced apoptosis and augmented tube formation, migration and proliferative capacities of human umbilical vein endothelial cells (HUVECs). Additionally, PEMF exposure increased VEGF secretion, as well as the eNOS and Akt phosphorylation, and these benefits could be blocked by either phosphoinositide 3-kinase (PI3K) or eNOS inhibitor. In conclusion, our data indicated that PEMF therapy enhanced ischemia-mediated angiogenesis, through up-regulating VEGF expression and activating the PI3K-Akt-eNOS pathway. Therefore, PEMF should be a valuable treatment for the patients with critical limb ischemia.
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Affiliation(s)
- Rui-Lin Li
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Jing-Juan Huang
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Yi-Qin Shi
- Department of Vascular Surgery, Ren Ji Hospital, Shanghai Jiaotong University School of MedicineDongfang Road 1630, Shanghai 200127, China
| | - An Hu
- Department of Otolaryngology, Gong li HospitalMiaopu Road 219, Shanghai 200135, China
| | - Zhao-Yang Lu
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Liang Weng
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Shen-Qi Wang
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Yi-Peng Han
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
| | - Lan Zhang
- Department of Vascular Surgery, Ren Ji Hospital, Shanghai Jiaotong University School of MedicineDongfang Road 1630, Shanghai 200127, China
| | - Chang-Ning Hao
- Department of Vascular Surgery, Ren Ji Hospital, Shanghai Jiaotong University School of MedicineDongfang Road 1630, Shanghai 200127, China
| | - Jun-Li Duan
- Department of Gerontology, Xinhua Hospital, Shanghai Jiaotong UniversityKongjiang Road 1665, Shanghai 200092, China
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