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Tabakan I, Yuvacı AU, Taştekin B, Öcal I, Pelit A. The healing effect of pulsed magnetic field on burn wounds. Burns 2022; 48:649-653. [PMID: 34670708 DOI: 10.1016/j.burns.2021.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/22/2021] [Accepted: 06/04/2021] [Indexed: 12/15/2022]
Abstract
A burn is one of the most difficult injuries people can face.The primary pathology is coagulation necrosis resulting from tissue damage.Many wound care products have been developed to be used in situations such as the poor general condition of the patient and lack of solid area to be grafted. However, the high costs of these products make their use complicated.In this study, the effect of PEMF on cutaneous wound healing in an animal burn model was evaluated and the dose and duration of the magnetic field should be discussed for this effect to occur. Animals were divided into five groups including eight each (n = 40) (Groups 1, 2, 3, 4, 5).Group 1 was the control group; received no treatment after second-degree burn wound. Group 2 received daily wound care with saline. Group 3 received daily wound care with pomade containing mupirocin. Group 4 received Pulsed Electromagnetic Field signal for 60 min (1.5 m T and 40 Hz for seven days and Group 5 also received PEMF signal for 60 min the same frequency and intensity for14 days. Microscopically, second-degree burn wounds were successfully detected in all rats. Histopathological examination results in no significant difference between groups in neutrophil infiltration. The difference between the groups in vascularization was statistically significant between Group II and Group V (p < 0.001) and between Group I and Group V (p = 0.005) Epithelialization was present in 75% of the rats in Group V, while no epithelialization was observed in any of the other groups. In conclusion, we observed a significant improvement in the stasis zone of the group receiving Pulsed Electromagnetic Field for two weeks.
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Affiliation(s)
- Ibrahim Tabakan
- Department of Plastic, Reconstructive and Aesthetic Surgery, Cukurova University, Medical School, Turkey.
| | - Ahmet Umut Yuvacı
- Department of Plastic, Reconstructive and Aesthetic Surgery, Cukurova University, Medical School, Turkey.
| | - Bora Taştekin
- Department of Biophysics, Cukurova University, Medical School, Turkey.
| | - Işıl Öcal
- Department of Biophysics, Cukurova University, Medical School, Turkey.
| | - Aykut Pelit
- Department of Biophysics, Cukurova University, Medical School, Turkey.
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Javadzadegan A, Moshfegh A, Behnia M. Effect of magnetic field on haemodynamic perturbations in atherosclerotic coronary arteries. J Med Eng Technol 2018; 42:148-156. [DOI: 10.1080/03091902.2018.1447034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ashkan Javadzadegan
- Macquarie University, Sydney, Australia
- ANZAC Research Institute, The University of Sydney, Sydney, Australia
| | - Abouzar Moshfegh
- Macquarie University, Sydney, Australia
- ANZAC Research Institute, The University of Sydney, Sydney, Australia
| | - Masud Behnia
- School of Management, Macquarie University, Sydney, Australia
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Sharma U, Goswami A, Rabha MM, Barua AG. In vivo bioluminescence emissions of the firefly Luciola praeusta at low temperatures. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 161:383-6. [PMID: 27309681 DOI: 10.1016/j.jphotobiol.2016.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 06/07/2016] [Indexed: 10/21/2022]
Abstract
Dependences of light emission from fireflies on external factors like temperature and magnetic field have been studied in recent times. Interesting conclusions have been drawn and hypotheses put forward in those studies. Here we report steady-state and time-resolved emissions of the Indian species of the firefly Luciola praeusta Kiesenwetter 1874 (Coleoptera: Lampyridae: Luciolinae) at temperatures below 20°C. Intensity profiles of emission spectra remain the same as those recorded at normal or high temperatures. Two-flash combinations are frequently formed, giving the appearance of the resolution of a simple flash into two. Simple flashes also become abnormally broad with no uniformity in the increase of their durations. The flashes obtained from fireflies at low temperatures are compared and contrasted with the ones under a strong static magnetic field.
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Affiliation(s)
- Upamanyu Sharma
- Department of Physics, Gauhati University, Guwahati 781014, India
| | - Angana Goswami
- Department of Physics, Gauhati University, Guwahati 781014, India
| | - Mana Mohan Rabha
- Department of Physics, Gauhati University, Guwahati 781014, India
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Yu S, Shang P. A review of bioeffects of static magnetic field on rodent models. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2014; 114:14-24. [DOI: 10.1016/j.pbiomolbio.2013.11.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 10/30/2013] [Accepted: 11/05/2013] [Indexed: 01/11/2023]
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Static magnetic field effects on impaired peripheral vasomotion in conscious rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:746968. [PMID: 24454512 PMCID: PMC3877601 DOI: 10.1155/2013/746968] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 11/07/2013] [Indexed: 11/22/2022]
Abstract
We investigated the SMF effects on hemodynamics in the caudal artery-ligated rat as an in vivo ischemia model using noninvasive near-infrared spectroscopy (NIRS) combined with power spectral analysis by fast Fourier transform. Male Wistar rats in the growth stage (10 weeks old) were randomly assigned into four groups: (i) intact and nonoperated cage control (n = 20); (ii) ligated alone (n = 20); (iii) ligated and implanted with a nonmagnetized rod (sham magnet; n = 22); and (vi) ligated and implanted with a magnetized rod (n = 22). After caudal artery ligation, a magnetized or unmagnetized rod (maximum magnetic flux density of 160 mT) was implanted transcortically into the middle diaphysis of the fifth caudal vertebra. During the experimental period of 7 weeks, NIRS measurements were performed in 3- , 5- , and 7-week sessions and the vasomotion amplitude and frequency were analyzed by fast Fourier transform. Exposure for 3–7 weeks to the SMF significantly contracted the increased vasomotion amplitude in the ischemic area. These results suggest that SMF may have a regulatory effect on rhythmic vasomotion in the ischemic area by smoothing the vasomotion amplitude in the early stage of the wound healing process.
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Barua AG, Iwasaka M, Miyashita Y, Kurita S, Owada N. Firefly flashing under strong static magnetic field. Photochem Photobiol Sci 2011; 11:345-50. [PMID: 22131061 DOI: 10.1039/c1pp05220a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Firefly flashing has been the subject of numerous scientific investigations. Here we present in vivo flashes from male specimens of three species of fireflies-two Japanese species Luciola cruciata, Luciola lateralis and one Indian species Luciola praeusta-positioned under a superconducting magnet. When the OFF state of the firefly becomes long after flashing in an immobile state under the strong static magnetic field of strength 10 Tesla for a long time, which varies widely from species to species as well as from specimen to specimen, the effect of the field becomes noticeable. The flashes in general are more rapid, and occasionally overlap to produce broad compound flashes. We present the broadest flashes recorded to date, and propose that the strong static magnetic field affects the neural activities of fireflies, especially those in the spent up or 'exhausted' condition.
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Ueno S. Studies on magnetism and bioelectromagnetics for 45 years: From magnetic analog memory to human brain stimulation and imaging. Bioelectromagnetics 2011; 33:3-22. [DOI: 10.1002/bem.20714] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 09/21/2011] [Indexed: 12/20/2022]
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Recovery Effects of a 180 mT Static Magnetic Field on Bone Mineral Density of Osteoporotic Lumbar Vertebrae in Ovariectomized Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2010; 2011. [PMID: 20953437 PMCID: PMC2952315 DOI: 10.1155/2011/620984] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 07/05/2010] [Accepted: 08/21/2010] [Indexed: 11/18/2022]
Abstract
The effects of a moderate-intensity static magnetic field (SMF) on osteoporosis of the lumbar vertebrae were studied in ovariectomized rats. A small disc magnet (maximum magnetic flux density 180 mT) was implanted to the right side of spinous process of the third lumbar vertebra. Female rats in the growth stage (10 weeks old) were randomly divided into 4 groups: (i) ovariectomized and implanted with a disc magnet (SMF); (ii) ovariectomized and implanted with a nonmagnetized disc (sham); (iii) ovariectomized alone (OVX) and (vi) intact, nonoperated cage control (CTL). The blood serum 17-β-estradiol (E2) concentrations were measured by radioimmunoassay, and the bone mineral density (BMD) values of the femurs and the lumbar vertebrae were assessed by dual energy X-ray absorptiometry. The E2 concentrations were statistically significantly lower for all three operated groups than those of the CTL group at the 6th week. Although there was no statistical significant difference in the E2 concentrations between the SMF-exposed and sham-exposed groups, the BMD values of the lumbar vertebrae proximal to the SMF-exposed area statistically significantly increased in the SMF-exposed group than in the sham-exposed group. These results suggest that the SMF increased the BMD values of osteoporotic lumbar vertebrae in the ovariectomized rats.
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Okano H, Kitahata H, Akai D. Effect of a gradient static magnetic field on an unstirred Belousov-Zhabotinsky reaction by changing the thickness of the medium. J Phys Chem A 2009; 113:3061-7. [PMID: 19320513 DOI: 10.1021/jp8045565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The anomalous chemical wave propagation of an unstirred Belousov-Zhabotinsky (BZ) reaction was observed under exposure to a gradient static magnetic field (SMF). The gradient SMF effect on the BZ reaction was investigated by increasing the thickness of the BZ medium up to 0.9 mm under the conditions of the extremely reduced water evaporation and surface tension caused by air-water interfaces. The respective maximum values of magnetic flux density (B(max)), magnetic flux gradient (G(max)), and the magnetic force product of the magnetic flux density x its gradient (a magnetic force parameter) are 0.206 T, 37 T m(-1), and 4 T(2) m(-1). The experiments demonstrate that the more increased thickness of the BZ medium induces the larger anomalous wave propagation toward the peak magnetic gradient line but not toward the peak magnetic force product line. The anomalies were significantly enhanced by the increased thickness of the BZ medium at the shorter distance from the maximum magnetic gradient point. The possible mechanism of SMF-induced anomalous wave propagation related to the BZ medium thickness is that the micro-magneto-convection-induced flow of the paramagnetic iron ion complexes at the wavefronts can be accelerated by increases in both the spatial magnetic gradient and the volumetric depth of the diffusion layer.
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Affiliation(s)
- Hideyuki Okano
- International Innovation Center, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
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László J, Reiczigel J, Székely L, Gasparics A, Bogár I, Bors L, Rácz B, Gyires K. Optimization of static magnetic field parameters improves analgesic effect in mice. Bioelectromagnetics 2008; 28:615-27. [PMID: 17654477 DOI: 10.1002/bem.20341] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The present study deals with the analgesic effect induced by static magnetic fields (SMF) in mice exposed to the field with their whole body. It discusses how the effect depends on the distribution of the magnetic field, that is, on the specification and arrangement of the applied individual permanent magnets. A critical analysis of different magnet arrangements is given. As a result the authors propose a magnet arrangement recipe that achieves an analgesic effect of over 80% in the writhing test. This is a widely accepted screening method for animal pain and predictor of human experimental results. As a non-drug, non-invasive, non-contact, non-pain, non-addictive method for analgesia with immediate and long-lasting effect based on the stimulus of the endogenous opioid network, the SMF treatment may attract the attention of medical doctors, nurses, magnet therapists, veterinarians, physiotherapists, masseurs, and fitness trainers among others.
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Affiliation(s)
- János László
- Section for Mathematics, Hungarian Academy of Sciences, Budapest, Hungary.
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Abstract
Various experimental studies carried out over the last 30-40 years have examined the effects of the chronic or acute exposure of laboratory animals to static magnetic fields. Many of the earlier studies have been adequately reviewed elsewhere; few adverse effects were identified. This review focuses on studies carried out more recently, mostly those using vertebrates, particularly mammals. Four main areas of investigation have been covered, viz., nervous system and behavioural studies, cardiovascular system responses, reproduction and development, and genotoxicity and cancer. Work on the role of the natural geomagnetic field in animal orientation and migration has been omitted. Generally, the acute responses found during exposure to static fields above about 4 T are consistent with those found in volunteer studies, namely the induction of flow potentials around the heart and the development of aversive/avoidance behaviour resulting from body movement in such fields. No consistently demonstrable effects of exposure to fields of approximately 1T and above have been seen on other behavioural or cardiovascular endpoints. In addition, no adverse effects of such fields on reproduction and development or on the growth and development of tumours have been firmly established. Overall, however, far too few animal studies have been carried out to reach any firm conclusions.
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Affiliation(s)
- Richard Saunders
- Radiation and Environmental Health Unit, Department of Protection of the Human Environment, Sustainable Development and Healthy Environment Cluster, World Health Organisation, 20, Avenue Appia, CH-1211 Geneva 27, Switzerland.
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Mayrovitz HN, Groseclose EE. Effects of a static magnetic field of either polarity on skin microcirculation. Microvasc Res 2005; 69:24-7. [PMID: 15797257 DOI: 10.1016/j.mvr.2004.11.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2004] [Indexed: 11/29/2022]
Abstract
Our specific aim was to investigate whether a local static magnetic field of a permanent magnet, of either pole, affects resting skin blood perfusion. This was done by measuring skin blood perfusion (SBF) by laser-Doppler in dorsum skin of 2nd and 4th fingers of the nondominant hands of 12 volunteers. Both fingers were first exposed to sham magnets, and then the 2nd finger was exposed alternately to north and south poles of a neodymium magnet that produced a field of 4024 G at the palmar part of the finger and a field of 879 +/- 52 G at the site of finger dorsum SBF measurement. Each of the three exposure intervals was 15 min. SBF values were analyzed by first computing the average SBF during the last 5 min of each of the three 15-min exposure intervals. These SBF averages were initially tested for magnet or magnet-pole effects by analysis of variance for repeated measures with finger as a factor, using SBF values for each finger as the test variable. Results of this analysis revealed a large variability in finger SBF among subjects and no significant difference in SBF between exposure conditions (P = 0.705) or any significant interaction between SBF and finger (P = 0.396). However, when intersubject variability was reduced by using the flow difference between treated and nontreated fingers in each exposure interval as the test variable, a statistically significant effect (P = 0.016) attributable to magnet exposure was uncovered. This effect was a reduction in resting SBF in the magnet-exposed fingers that was similar for north and south pole magnet exposure. The present findings are the first to demonstrate a direct effect of locally applied magnets on human skin blood perfusion.
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Affiliation(s)
- Harvey N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, 3200 S. University Drive, Ft. Lauderdale, FL 33328, USA.
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