1
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12 T high static magnetic field suppresses osteosarcoma cells proliferation by regulating intracellular ROS and iron status. Exp Cell Res 2022; 417:113223. [DOI: 10.1016/j.yexcr.2022.113223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 05/17/2022] [Accepted: 05/22/2022] [Indexed: 11/24/2022]
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2
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Moderate Static Magnet Fields Suppress Ovarian Cancer Metastasis via ROS-Mediated Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:7103345. [PMID: 34917231 PMCID: PMC8670934 DOI: 10.1155/2021/7103345] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/08/2021] [Indexed: 11/18/2022]
Abstract
Metastasis is the leading cause of cancer patient death, which is closely correlated with reactive oxygen species (ROS) levels. It is well known that the effects of ROS on tumors are diverse, depending on ROS concentration and cell type. We found that ovarian cancer cells have significantly lower levels of ROS than normal ovarian cells. Moreover, increased ROS levels in ovarian cancer cells can substantially inhibit their migration and invasion ability. Furthermore, the results show that moderate static magnetic field (SMF) can inhibit ovarian cancer cell migration, invasion, and stemness in a ROS-dependent manner. RNA sequencing results confirm that SMFs increased the oxidative stress level and reduced the stemness of ovarian cancer cells. Consistently, the expressions of stemness-related genes were significantly decreased, including hyaluronan receptor (CD44), SRY-box transcription factor 2 (Sox2), and cell myc proto-oncogene protein (C-myc). Furthermore, moderate SMFs provided by a superconducting magnet and permanent magnet have good biosafety and can both inhibit ovarian cancer metastasis in mice. Therefore, our study demonstrates the effects of SMFs on oxidative stress and metastasis in the ovarian cancer cells, which reveals the potential of applying SMF as a physical method in cancer therapy in the future.
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3
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Wang S, Huyan T, Zhou L, Xue Y, Guo W, Yin D, Shang P. Effect of High Static Magnetic Field (2 T-12 T) Exposure on the Mineral Element Content in Mice. Biol Trace Elem Res 2021; 199:3416-3422. [PMID: 33411150 DOI: 10.1007/s12011-020-02469-1] [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: 09/10/2020] [Accepted: 10/30/2020] [Indexed: 11/30/2022]
Abstract
Relative stability of mineral elements in tissues is necessary for health. High static magnetic fields (HiSMFs) have been widely used in biomedical research and industry. However, the bioeffect of HiSMFs on animals is still unclear. In this study, we investigated the effects of HiSMF exposure on the levels of Mg, Fe, Zn, Ca, and Cu in the main organs of mice. The 8-week male C57BL/6 mice were treated by 2-4 T, 6-8 T, 10-12 T HiSMFs for 28 days. The mass fractions of Mg, Fe, Zn, Ca, and Cu in the liver, brain, kidney, and heart in mice were respectively measured by atomic absorption spectroscopy, and used to evaluate mineral element content in tissues. The 2-4 T HiSMF exposure has increased the Mg, Fe, and Ca content in the kidney, as well as the Zn content in the brain. The 6-8 T HiSMF exposure has increased the Zn level in the liver; Mg, Fe, and Ca levels in the kidney; and Fe level in the heart, while the Zn in the kidney, and Zn and Ca in the heart was decreased by 6-8 T HiSMF exposure. For the 10-12 T HiSMF exposure, the Mg in the kidney, the Fe in the liver and kidney, and Cu in the brain have been increased significantly. However, the Zn in the kidney and the Ca in the brain and the heart were reduced by 10-12 T HiSMF exposure. The HiSMF exposure for 28 days can alter the Mg, Fe, Zn, Ca, and Cu content in mice, and change with the different magnetic flux density of HiSMFs (2-4 T, 6-8 T, 10-12 T), elements, and organ types.
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Affiliation(s)
- Shenghang Wang
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Ting Huyan
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Liangfu Zhou
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Yanru Xue
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Weihong Guo
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Dachuan Yin
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Peng Shang
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China.
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China.
- Key Laboratory for Space Biosciences and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China.
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4
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Wang Y, Gu X, Quan J, Xing G, Yang L, Zhao C, Wu P, Zhao F, Hu B, Hu Y. Application of magnetic fields to wastewater treatment and its mechanisms: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145476. [PMID: 33588219 DOI: 10.1016/j.scitotenv.2021.145476] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/21/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Magnetic field (MF) has been applied widely and successfully as an efficient, low-cost and easy-to-use technique to enhance wastewater treatment (WWT) performance. Although the effects of MF on WWT were revealed and summarized by some works, they are still mysterious and complex. This review summarizes the application of MF in magnetic adsorption-separation of heavy metals and dyes, treatment of domestic wastewater and photo-magnetic coupling technology. Furthermore, the mechanisms of MF-enhanced WWT are critically elaborated from the perspective of magnetic physicochemical and biological effects, such as magnetoresistance, Lorentz force, and intracellular radical pair mechanism. At last, the challenges and opportunities for MF application in WWT are discussed. For overcoming the limitations and taking advantages of MFs in WWT, fundamental research of the mechanisms of the application of MFs should be carried out in the future.
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Affiliation(s)
- Yilin Wang
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Xin Gu
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Jianing Quan
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Guohua Xing
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Liwei Yang
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Chuanliang Zhao
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Pei Wu
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Fan Zhao
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China
| | - Bo Hu
- School of Civil Engineering, Chang' an University, Xi'an, China; Key Laboratory of Water Supply & Sewage Engineering, Ministry of Housing and Urban-rural Development, Chang' an University, Xi'an, China.
| | - Yuansheng Hu
- School of Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland
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5
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Tasić T, Lozić M, Glumac S, Stanković M, Milovanovich I, Djordjevich DM, Trbovich AM, Japundžić-Žigon N, De Luka SR. Static magnetic field on behavior, hematological parameters and organ damage in spontaneously hypertensive rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111085. [PMID: 32898814 DOI: 10.1016/j.ecoenv.2020.111085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Previous studies showed contradictory results of static magnetic field (SMF) influence on behavior, hematological parameters and organ damage. The aim of this study was to investigate influence of subchronic continuous exposure to upward and downward oriented SMF of moderate intensity on behavior, hematological characteristics, heart and kidney tissue of spontaneously hypertensive rats. SH rats exposed to downward oriented SMF demonstrated lack of anxious-like behavior. SMF of either orientation caused decrease in the number of platelets in peripheral blood, granulocytes in the spleen and bone marrow and increase in the number of erythrocytes in the spleen, in both exposed groups. We also demonstrated that spontaneously hypertensive rats exposed to upward oriented SMF exhibited decreased lymphocytes count in blood, decreased bone marrow erythrocytes count and rats exposed to downward oriented SMF had increased lymphocytes count in bone marrow. The results showed adverse effect of differently oriented SMF on hematological parameters of spontaneously hypertensive rats. Also, exposure to different oriented SMF didn't affect their heart and kidney morphological characteristics.
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Affiliation(s)
- Tatjana Tasić
- Faculty of Dental Medicine, University of Belgrade, Serbia
| | - Maja Lozić
- Faculty of Medicine, University of Belgrade, Serbia
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6
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Potapova NV, Kasaikina OT, Berezin MP, Plashchina IG. Catalytic Generation of Radicals in Supramolecular Systems with Acetylcholine. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158420050079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Tang H, Wang P, Wang H, Fang Z, Yang Q, Ni W, Sun X, Liu H, Wang L, Zhao G, Zheng Z. Effect of static magnetic field on morphology and growth metabolism of Flavobacterium sp. m1-14. Bioprocess Biosyst Eng 2019; 42:1923-1933. [PMID: 31444633 DOI: 10.1007/s00449-019-02186-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/22/2019] [Accepted: 07/29/2019] [Indexed: 11/28/2022]
Abstract
Increasing evidence shows that static magnetic fields (SMFs) can affect microbial growth metabolism, but the specific mechanism is still unclear. In this study, we have investigated the effect of moderate-strength SMFs on growth and vitamin K2 biosynthesis of Flavobacterium sp. m1-14. First, we designed a series of different moderate-strength magnetic field intensities (0, 50, 100, 150, 190 mT) and exposure times (0, 24, 48, 72, 120 h). With the optimization of static magnetic field intensity and exposure time, biomass and vitamin K2 production significantly increased compared to control. The maximum vitamin K2 concentration and biomass were achieved when exposed to 100 mT SMF for 48 h; compared with the control group, they increased by 71.3% and 86.8%, respectively. Interestingly, it was found that both the cell viability and morphology changed significantly after SMF treatment. Second, the adenosine triphosphate (ATP) and glucose-6-phosphate dehydrogenase (G6PDH) metabolism is more vigorous after exposed to 100 mT SMF. This change affects the cell energy metabolism and fermentation behavior, and may partially explain the changes in bacterial biomass and vitamin K2 production. The results show that moderate-strength SMFs may be a promising method to promote bacterial growth and secondary metabolite synthesis.
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Affiliation(s)
- Hengfang Tang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Peng Wang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China
| | - Han Wang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Zhiwei Fang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Qiang Yang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Wenfeng Ni
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Xiaowen Sun
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.,Science Island Branch of Graduate, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Hui Liu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China
| | - Li Wang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China
| | - Genhai Zhao
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.
| | - Zhiming Zheng
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China.
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8
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Todorović D, Ilijin L, Mrdaković M, Vlahović M, Filipović A, Grčić A, Perić-Mataruga V. Long-term exposure of cockroach Blaptica dubia (Insecta: Blaberidae) nymphs to magnetic fields of different characteristics: effects on antioxidant biomarkers and nymphal gut mass. Int J Radiat Biol 2019; 95:1185-1193. [PMID: 30822251 DOI: 10.1080/09553002.2019.1589017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Purpose: The main goal of this study was to analyze the long-term effects of static (SMF) and extremely low-frequency magnetic field (ELF MF) on nymphal gut mass and antioxidant biomarkers in this tissue of cockroach Blaptica dubia. Materials and methods: One-month-old nymphs were exposed to magnetic field (MF) for 5 months in three experimental groups: control, exposure to SMF (110 mT) and exposure to ELF MF (50 Hz, 10 mT). Results: The gut masses of the MF groups were significantly lower when compared to control. Superoxide dismutase (SOD) and catalase (CAT) activities were markedly higher than for the control and the differences between the MF groups were statistically significant only for SOD. The applied MF had no effect on total glutathione (GSH) content. Glutathione reductase (GR) and glutathione S-transferase (GST) activities were significantly lower in both MF groups in comparison to the control. There was a significant difference between MF groups for GR activity. Principal Component Analysis (PCA) showed that CAT and GST were the main factors contributing to the differentiation of the control group from the treated experimental groups along PCA 1, and SOD and GR along PCA 2. PCA revealed clear separation between experimental groups depends on antioxidant biomarker response. Conclusion: The applied magnetic fields could be considered a potential stressor influencing gut mass, as well as examined antioxidative biomarkers.
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Affiliation(s)
- Dajana Todorović
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Larisa Ilijin
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Marija Mrdaković
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Milena Vlahović
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Aleksandra Filipović
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Anja Grčić
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
| | - Vesna Perić-Mataruga
- a Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković", University of Belgrade , Belgrade , Serbia
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9
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Wang D, Zhang L, Shao G, Yang S, Tao S, Fang K, Zhang X. 6-mT 0-120-Hz magnetic fields differentially affect cellular ATP levels. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:28237-28247. [PMID: 30074140 DOI: 10.1007/s11356-018-2868-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Adenosine triphosphate (ATP), an indispensable molecule that provides energy for essentially all cellular processes, has been shown to be affected by some magnetic fields (MFs). Although people are frequently exposed to various static and power frequency MFs in their daily lives, the exact effects of these MFs of different frequencies have not been systematically investigated. Here, we tested 6-mT MFs with 0, 50, and 120 Hz for their effects on cellular ATP levels in 11 different cell lines. We found that the 6-mT static magnetic field (SMF) either does not affect or increase cellular ATP levels, while 6-mT 50-Hz MF either does not affect or decrease cellular ATP levels. In contrast, 6-mT 120-Hz MF has variable effects. We examined the mitochondrial membrane potential (MMP) as well as reactive oxygen species (ROS) in four different cell lines, but did not find their direct correlation with ATP levels. Although none of the ATP level changes induced by these three different frequencies of 6-mT MFs are dramatic, these results may be used to explain some differential cellular responses of various cell lines to different frequency MFs.
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Affiliation(s)
- Dongmei Wang
- 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, 230031, Anhui, China
- University of Science and Technology of China, Hefei, 230036, Anhui, 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, 230031, Anhui, China
- University of Science and Technology of China, Hefei, 230036, Anhui, China
| | - Guangze Shao
- First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Shuo Yang
- First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Shengwei Tao
- First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Kun Fang
- First School of Clinical Medicine, Anhui Medical University, Hefei, 230032, Anhui, 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, 230031, Anhui, China.
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, Anhui, China.
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10
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Impact of Static Magnetic Field on the Antioxidant Defence System of Mice Fibroblasts. BIOMED RESEARCH INTERNATIONAL 2018; 2018:5053608. [PMID: 29789797 PMCID: PMC5896275 DOI: 10.1155/2018/5053608] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 02/25/2018] [Indexed: 12/18/2022]
Abstract
Results of research assessing the biological impact of static magnetic fields are controversial. So far, they have not provided a clear answer to their influence on cell functioning. Since the use of permanent magnets both in everyday life and in industry becomes more and more widespread, the investigations are continued in order to explain these controversies and to evaluate positive applications. The goal of current work was to assess the impact of static magnetic field of different intensities on redox homeostasis in cultures of fibroblasts. The use of permanent magnets allowed avoiding the thermal effects which are present in electromagnets. During the research we used 6 chambers, designed exclusively by us, with different values of field flux density (varying from 0.1 to 0.7 T). We have noted the decrease in the activity of superoxide dismutase (SOD) and glutathione peroxidase (GPx). The static magnetic fields did not modify the energy state of fibroblasts— adenosine triphosphate (ATP) concentration was stable, as well as the generation of malondialdehyde (MDA)—which is a marker of oxidative stress. Results of research suggest that static magnetic fields generated by permanent magnets do not cause oxidative stress in investigated fibroblasts and that they may show slight antioxidizing activity.
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11
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Impact of fluoride and a static magnetic field on the gene expression that is associated with the antioxidant defense system of human fibroblasts. Chem Biol Interact 2018; 287:13-19. [DOI: 10.1016/j.cbi.2018.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/20/2018] [Accepted: 04/05/2018] [Indexed: 01/08/2023]
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12
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Wang D, Wang Z, Zhang L, Li Z, Tian X, Fang J, Lu Q, Zhang X. Cellular ATP levels are affected by moderate and strong static magnetic fields. Bioelectromagnetics 2018; 39:352-360. [PMID: 29709058 DOI: 10.1002/bem.22122] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 03/23/2018] [Indexed: 12/21/2022]
Abstract
Mitochondrion is the major cellular energy producing organelle that is at the boundary between chemical reactions and physical processes. Although mitochondria have been shown to be affected by physical methods such as nonthermal plasma, whether static magnetic field (SMF) could also affect them is still unclear. Here we used rat adrenal PC12 cells to compare SMFs of different intensities for their effects on ATP (adenosine-5'-triphosphate), the major energy source produced by mitochondria, which is essential for various cellular processes. Our results show that although 0.26 or 0.50 T SMFs did not affect ATP, 1 T and 9 T SMFs affected ATP level differently and time-dependently. Moreover, SMF-induced ATP level fluctuations are correlated with mitochondrial membrane potential changes. Our study provides insights not only into understanding various cellular effects of SMFs, but also the potential clinical applications of SMFs. Bioelectromagnetics. 39:352-360, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Dongmei Wang
- 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.,University of Science and Technology of China, Hefei, China
| | - Ze Wang
- 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.,University of Science and Technology of China, 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.,University of Science and Technology of China, Hefei, China
| | - Zhiyuan Li
- 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
| | - XiaoFei Tian
- 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.,University of Science and Technology of China, Hefei, China
| | - Jun Fang
- 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.,Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, Hefei, China
| | - Qingyou Lu
- 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.,University of Science and Technology of China, Hefei, China.,Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, 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.,Institute of Physical Science and Information Technology, Anhui University, Hefei, China
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13
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Tian X, Wang D, Zha M, Yang X, Ji X, Zhang L, Zhang X. Magnetic field direction differentially impacts the growth of different cell types. Electromagn Biol Med 2018; 37:114-125. [PMID: 29621414 DOI: 10.1080/15368378.2018.1458627] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Magnetic resonance imaging (MRI) machines have horizontal or upright static magnetic field (SMF) of 0.1-3 T (Tesla) at sites of patients and operators, but the biological effects of these SMFs still remain elusive. We examined 12 different cell lines, including 5 human solid tumor cell lines, 2 human leukemia cell lines and 4 human non-cancer cell lines, as well as the Chinese hamster ovary cell line. Permanent magnets were used to provide 0.2-1 T SMFs with different magnetic field directions. We found that an upward magnetic field of 0.2-1 T could effectively reduce the cell numbers of all human solid tumor cell lines we tested, but a downward magnetic field mostly had no statistically significant effect. However, the leukemia cells in suspension, which do not have shape-induced anisotropy, were inhibited by both upward and downward magnetic fields. In contrast, the cell numbers of most non-cancer cells were not affected by magnetic fields of all directions. Moreover, the upward magnetic field inhibited GIST-T1 tumor growth in nude mice by 19.3% (p < 0.05) while the downward magnetic field did not produce significant effect. In conclusion, although still lack of mechanistical insights, our results show that different magnetic field directions produce divergent effects on cancer cell numbers as well as tumor growth in mice. This not only verified the safety of SMF exposure related to current MRI machines but also revealed the possible antitumor potential of magnetic field with an upward direction.
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Affiliation(s)
- Xiaofei Tian
- a 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, Anhui, P.R.China.,b University of Science and Technology of China, Hefei, Anhui, P.R.China
| | - Dongmei Wang
- a 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, Anhui, P.R.China.,b University of Science and Technology of China, Hefei, Anhui, P.R.China
| | - Meng Zha
- a 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, Anhui, P.R.China
| | - Xingxing Yang
- a 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, Anhui, P.R.China
| | - Xinmiao Ji
- a 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, Anhui, P.R.China
| | - Lei Zhang
- a 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, Anhui, P.R.China.,b University of Science and Technology of China, Hefei, Anhui, P.R.China
| | - Xin Zhang
- a 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, Anhui, P.R.China.,c Institute of Physical Science and Information Technology , Anhui University , Hefei , Anhui , P. R. China
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Kazin VN, Guzov EA, Pliss EM, Moshareva VA, Makaryin VV, Levshin NY, Baranov AA. The effect of a constant magnetic field on components of protein structures in human blood. Biophysics (Nagoya-shi) 2017. [DOI: 10.1134/s0006350917050104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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15
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Magnetic Fields and Reactive Oxygen Species. Int J Mol Sci 2017; 18:ijms18102175. [PMID: 29057846 PMCID: PMC5666856 DOI: 10.3390/ijms18102175] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/30/2017] [Accepted: 10/13/2017] [Indexed: 12/21/2022] Open
Abstract
Reactive oxygen species (ROS) ubiquitously exist in mammalian cells to participate in various cellular signaling pathways. The intracellular ROS levels are dependent on the dynamic balance between ROS generation and elimination. In this review, we summarize reported studies about the influences of magnetic fields (MFs) on ROS levels. Although in most cases, MFs increased ROS levels in human, mouse, rat cells, and tissues, there are also studies showing that ROS levels were decreased or not affected by MFs. Multiple factors could cause these discrepancies, including but not limited to MF type/intensity/frequency, exposure time and assay time-point, as well as different biological samples examined. It will be necessary to investigate the influences of different MFs on ROS in various biological samples systematically and mechanistically, which will be helpful for people to get a more complete understanding about MF-induced biological effects. In addition, reviewing the roles of MFs in ROS modulation may open up new scenarios of MF application, which could be further and more widely adopted into clinical applications, particularly in diseases that ROS have documented pathophysiological roles.
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16
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Kasaikina OT, Potapova NV, Krugovov DA, Pisarenko LM. Catalysis of radical reactions in mixed micelles of surfactants with hydroperoxides. KINETICS AND CATALYSIS 2017. [DOI: 10.1134/s0023158417050093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Simultaneous application of cisplatin and static magnetic field enhances oxidative stress in HeLa cell line. In Vitro Cell Dev Biol Anim 2017; 53:783-790. [DOI: 10.1007/s11626-017-0148-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/23/2017] [Indexed: 10/18/2022]
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18
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Kasaikina OT, Krugovov DA, Mengele EA. Unusual antioxidant effects in multiphase and complex systems. EUR J LIPID SCI TECH 2017. [DOI: 10.1002/ejlt.201600286] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Olga T. Kasaikina
- Department of Chemistry, N.N.Semenov Institute of Chemical Physics RAS, Yaroslavl State UniversityMoscow State UniversityMoscowRussia
| | - Dmitriy A. Krugovov
- Department of Chemistry, N.N.Semenov Institute of Chemical Physics RAS, Yaroslavl State UniversityMoscow State UniversityMoscowRussia
| | - Elena A. Mengele
- Department of Chemistry, N.N.Semenov Institute of Chemical Physics RAS, Yaroslavl State UniversityMoscow State UniversityMoscowRussia
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19
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Hanini R, Chatti A, Ghorbel SB, Landoulsi A. Role of Sod Gene in Response to Static Magnetic Fields in Pseudomonas aeruginosa. Curr Microbiol 2017; 74:930-937. [PMID: 28523373 DOI: 10.1007/s00284-017-1264-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 05/10/2017] [Indexed: 12/11/2022]
Abstract
The protective role of superoxide dismutase (SOD) against non-ionizing radiation such as static electromagnetic field (200 mT) has been studied in wild-type and mutant strain of Pseudomonas aeruginosa lacking cytosolic Mn-SOD (sodM), Fe-SOD (sodB), or both SODs (sodMB). Our results showed that inactivation of sodM and/or sodB genes increases the sensitivity of P. aeruginosa toward stress induced by the static magnetic field (200 mT). Furthermore, our results showed an enhancement of SOD, catalase, and peroxidases after exposure to the magnetic field. However, wild-type cells maintained significantly higher activities of antioxidant enzymes than mutant strains. The malondialdehyde produced by the oxidative degradation of unsaturated lipids and fatty acids showed significant increase in mutant strains compared to the wild-type. The overall results showed that the SOD has a protective role against a stress induced by static electromagnetic field in P. aeruginosa.
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Affiliation(s)
- Raouia Hanini
- Unité de Biochimie des lipides et interactions des macromolécules en Biologie (03/UR/0902), Laboratoire de Biochimie et biologie moléculaire, Faculté des Sciences de Bizerte, Zarzouna 7021, Bizerte, Tunisia.
| | - Abdelwaheb Chatti
- Laboratoire de Traitement des Eaux Usées, Centre de Recherches et Technologies des Eaux, Technopole Borj Cedria, Tunis, Tunisia
| | - Selma Ben Ghorbel
- Laboratoire de Traitement des Eaux Usées, Centre de Recherches et Technologies des Eaux, Technopole Borj Cedria, Tunis, Tunisia
| | - Ahmed Landoulsi
- Unité de Biochimie des lipides et interactions des macromolécules en Biologie (03/UR/0902), Laboratoire de Biochimie et biologie moléculaire, Faculté des Sciences de Bizerte, Zarzouna 7021, Bizerte, Tunisia
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20
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Magnetic effects in hydroperoxide decomposition in mixed micelles with cationic surfactants. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1158-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Öztürk B, Durak ZE, Büber S, Kocaoğlu EH. Effect of Static Magnetic Field on Oxidant/Antioxidant Parameters in Cancerous and Noncancerous Human Gastric Tissues. SCIENTIFICA 2016; 2016:8608462. [PMID: 27313958 PMCID: PMC4904108 DOI: 10.1155/2016/8608462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 05/07/2016] [Accepted: 05/09/2016] [Indexed: 06/06/2023]
Abstract
Aim. To investigate the effects of static magnetic field (SMF) on oxidant and antioxidant parameters of the cancerous and noncancerous human gastric tissues. Materials and Methods. Gastric tissues obtained from patients with gastric cancer were used in the study. SMF was created by using two static magnets. Before and after treatment with SMF, oxidant and antioxidant parameters were measured in the tissue samples. Results. In the cancerous tissue, superoxide dismutase (SOD) activity was found higher and malondialdehyde (MDA) level was found lower as compared with noncancerous tissue. SMF affects oxidant/antioxidant parameters differently in the cancerous and noncancerous tissues. In this regard, SMF causes increase in SOD activity and decrease in MDA level in the noncancerous tissue. However, it decreases SOD and glutathione peroxidase (GSH-Px) activities and increases MDA level and catalase (CAT) activity in the cancerous tissue. There were no differences between nitric oxide (NO) and nitric oxide synthase (NOS) parameters in or among the cancerous and noncancerous tissues. Conclusions. SMF accelerates peroxidation reactions possibly by suppressing SOD and GSH-Px enzymes in the cancerous gastric tissue. This event caused by SMF might play part in the death of cancer cells, which may be a good supportive vehicle for the cancer therapy.
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Affiliation(s)
- Bahadır Öztürk
- Department of Biochemistry, Selçuk University Medical Faculty, 42131 Konya, Turkey
| | - Zahide Esra Durak
- The Laboratory of Turkish Public Health Institution, 06100 Ankara, Turkey
| | - Süleyman Büber
- Department of Biochemistry, Ankara University Medical Faculty, 06100 Ankara, Turkey
| | - Ender Hilmi Kocaoğlu
- Department of Surgical Oncology, Ankara University Medical Faculty, 06100 Ankara, Turkey
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22
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Antioxidant Defense Mechanisms in Pseudomonas aeruginosa: Role of Iron-Cofactored Superoxide Dismutase in Response to UV-C Radiations. Curr Microbiol 2016; 73:159-64. [DOI: 10.1007/s00284-016-1043-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/09/2016] [Indexed: 11/26/2022]
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23
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Romeo S, Sannino A, Scarfì MR, Massa R, d’Angelo R, Zeni O. Lack of effects on key cellular parameters of MRC-5 human lung fibroblasts exposed to 370 mT static magnetic field. Sci Rep 2016; 6:19398. [PMID: 26762783 PMCID: PMC4725921 DOI: 10.1038/srep19398] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 12/07/2015] [Indexed: 01/22/2023] Open
Abstract
The last decades have seen increased interest toward possible adverse effects arising from exposure to intense static magnetic fields. This concern is mainly due to the wider and wider applications of such fields in industry and clinical practice; among them, Magnetic Resonance Imaging (MRI) facilities are the main sources of exposure to static magnetic fields for both general public (patients) and workers. In recent investigations, exposures to static magnetic fields have been demonstrated to elicit, in different cell models, both permanent and transient modifications in cellular endpoints critical for the carcinogenesis process. The World Health Organization has therefore recommended in vitro investigations as important research need, to be carried out under strictly controlled exposure conditions. Here we report on the absence of effects on cell viability, reactive oxygen species levels and DNA integrity in MRC-5 human foetal lung fibroblasts exposed to 370 mT magnetic induction level, under different exposure regimens. Exposures have been performed by using an experimental apparatus designed and realized for operating with the static magnetic field generated by permanent magnets, and confined in a magnetic circuit, to allow cell cultures exposure in absence of confounding factors like heating or electric field components.
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Affiliation(s)
- Stefania Romeo
- CNR – Institute for Electromagnetic Sensing of Environment, Via Diocleziano 328, 80124 Naples, Italy
| | - Anna Sannino
- CNR – Institute for Electromagnetic Sensing of Environment, Via Diocleziano 328, 80124 Naples, Italy
| | - Maria Rosaria Scarfì
- CNR – Institute for Electromagnetic Sensing of Environment, Via Diocleziano 328, 80124 Naples, Italy
| | - Rita Massa
- CNR – Institute for Electromagnetic Sensing of Environment, Via Diocleziano 328, 80124 Naples, Italy
- Department of Physics, University of Naples Federico II, CMSA via Cintia, 80126, Napoli, Italy
| | - Raffaele d’Angelo
- Italian Workers’ Compensation Authority (INAIL)–Regional Technical Advisory Department Risk and Prevention Assessment (CONTARP) of Campania, via Nuova Poggioreale, 80143 Napoli
| | - Olga Zeni
- CNR – Institute for Electromagnetic Sensing of Environment, Via Diocleziano 328, 80124 Naples, Italy
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Milovanovich ID, Ćirković S, De Luka SR, Djordjevich DM, Ilić AŽ, Popović T, Arsić A, Obradović DD, Oprić D, Ristić-Djurović JL, Trbovich AM. Homogeneous static magnetic field of different orientation induces biological changes in subacutely exposed mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:1584-1597. [PMID: 26377971 DOI: 10.1007/s11356-015-5109-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 07/21/2015] [Indexed: 06/05/2023]
Abstract
It has been shown that static magnetic field (SMF) of moderate intensity produces considerable impact on biological systems. SMF can be homogeneous or inhomogeneous. In many studies, inhomogeneous SMF was employed. Aware that inhomogeneous SMF could result in experimental variability, we investigated the influence of a vertical homogeneous SMF of different orientation. Male Swiss-Webster 9- to 10-week-old mice were subacutely exposed to upward- and downward-oriented SMF of 128 mT generated by a cyclotron for 1 h/day during a 5-day period. We found that SMF affected various organs and that these effects were, to some degree, dependent on SMF orientation. Both upward- and downward-oriented SMF caused a reduction in the amount of total white blood cells (WBC) and lymphocytes in serum, a decrease of granulocytes in the spleen, kidney inflammation, and an increase in the amount of high-density lipoprotein (HDL). In addition, upward-oriented SMF caused brain edema and increased spleen cellularity. In contrast, downward-oriented SMF induced liver inflammation and a decrease in the amount of serum granulocytes. These effects might represent a specific redistribution of pro-inflammatory cells in blood and among various organs. It appears that homogeneous SMF of 128 mT affected specific organs in the body, rather than simultaneously and equally influencing the entire body system.
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Affiliation(s)
- Ivan D Milovanovich
- Department of Pathological Physiology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia
| | - Saša Ćirković
- Institute of Physics, University of Belgrade, Pregrevica 118, 11080, Zemun-Belgrade, Serbia
| | - Silvio R De Luka
- Department of Pathological Physiology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia
| | - Drago M Djordjevich
- Department of Pathological Physiology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia
| | - Andjelija Ž Ilić
- Institute of Physics, University of Belgrade, Pregrevica 118, 11080, Zemun-Belgrade, Serbia
| | - Tamara Popović
- Institute for Medical Research University of Belgrade, Laboratory for Nutrition and Metabolism, Tadeuša Košćuška 1, 11000, Belgrade, Serbia
| | - Aleksandra Arsić
- Institute for Medical Research University of Belgrade, Laboratory for Nutrition and Metabolism, Tadeuša Košćuška 1, 11000, Belgrade, Serbia
| | - Danilo D Obradović
- Department of Pathology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia
| | - Dejan Oprić
- Department of Pathology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia
| | | | - Alexander M Trbovich
- Department of Pathological Physiology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000, Belgrade, Serbia.
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25
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Bioeffects of static magnetic fields: oxidative stress, genotoxic effects, and cancer studies. BIOMED RESEARCH INTERNATIONAL 2013; 2013:602987. [PMID: 24027759 PMCID: PMC3763575 DOI: 10.1155/2013/602987] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 07/11/2013] [Accepted: 07/11/2013] [Indexed: 01/24/2023]
Abstract
The interaction of static magnetic fields (SMFs) with living organisms is a rapidly growing field of investigation. The magnetic fields (MFs) effect observed with radical pair recombination is one of the well-known mechanisms by which MFs interact with biological systems. Exposure to SMF can increase the activity, concentration, and life time of paramagnetic free radicals, which might cause oxidative stress, genetic mutation, and/or apoptosis. Current evidence suggests that cell proliferation can be influenced by a treatment with both SMFs and anticancer drugs. It has been recently found that SMFs can enhance the anticancer effect of chemotherapeutic drugs; this may provide a new strategy for cancer therapy. This review focuses on our own data and other data from the literature of SMFs bioeffects. Three main areas of investigation have been covered: free radical generation and oxidative stress, apoptosis and genotoxicity, and cancer. After an introduction on SMF classification and medical applications, the basic phenomena to understand the bioeffects are described. The scientific literature is summarized, integrated, and critically analyzed with the help of authoritative reviews by recognized experts; international safety guidelines are also cited.
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26
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Djordjevich DM, De Luka SR, Milovanovich ID, Janković S, Stefanović S, Vesković-Moračanin S, Cirković S, Ilić AŽ, Ristić-Djurović JL, Trbovich AM. Hematological parameters' changes in mice subchronically exposed to static magnetic fields of different orientations. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 81:98-105. [PMID: 22627015 DOI: 10.1016/j.ecoenv.2012.04.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 04/27/2012] [Accepted: 04/28/2012] [Indexed: 06/01/2023]
Abstract
Static magnetic fields (SMFs) are time independent fields whose intensity can be spatially dependent. This study investigates influence of subchronic continuous exposure to upward and downward directed SMF on hematological parameters and spleen cellularity in mice. The experiment is performed on the Northern hemisphere; consequently, the vertical component of geomagnetic field is directed downward. Male, Swiss-Webster, 6 weeks old mice were exposed to the vertically declining SMF. Mice were divided in three groups and continuously exposed or not exposed for 28 days to the SMF characterized by the averaged field of 16 mT and averaged field gradient of 10 mT/cm. Differently oriented SMF did not alter hemoglobin and hematocrit content among the groups. However, the groups exposed to the upward and downward fields had statistically significant higher levels of serum transferrin compared to the control. Moreover, spleen cellularity in animals in the downward group was significantly higher compared to the upward and control group. In addition, spleen lymphocytes in both of the exposed groups were significantly higher than in the control group. In contrast, spleen granulocytes in the exposed groups were significantly lower than in the control group. Significant decrease was also observed in brain and liver iron content with concomitant increase of iron in serum and spleen in exposed animals. Subchronic continuous exposure to 16 mT SMF caused lymphocyte and granulocyte redistribution between spleen and blood. This distribution is typical for stress induced hematological changes. These results suggest that observed changes were not due to an unspecific stress response, but that they were rather caused by specific adaptation to subchronic SMF exposure.
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Affiliation(s)
- Drago M Djordjevich
- Department of Pathological Physiology, School of Medicine, University of Belgrade, Dr Subotića 9, 11000 Belgrade, Serbia
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