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Liu L, Huang B, Lu Y, Zhao Y, Tang X, Shi Y. Interactions between electromagnetic radiation and biological systems. iScience 2024; 27:109201. [PMID: 38433903 PMCID: PMC10906530 DOI: 10.1016/j.isci.2024.109201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024] Open
Abstract
Even though the bioeffects of electromagnetic radiation (EMR) have been extensively investigated during the past several decades, our understandings of the bioeffects of EMR and the mechanisms of the interactions between the biological systems and the EMRs are still far from satisfactory. In this article, we introduce and summarize the consensus, controversy, limitations, and unsolved issues. The published works have investigated the EMR effects on different biological systems including humans, animals, cells, and biochemical reactions. Alternative methodologies also include dielectric spectroscopy, detection of bioelectromagnetic emissions, and theoretical predictions. In many studies, the thermal effects of the EMR are not properly controlled or considered. The frequency of the EMR investigated is limited to the commonly used bands, particularly the frequencies of the power line and the wireless communications; far fewer studies were performed for other EMR frequencies. In addition, the bioeffects of the complex EM environment were rarely discussed. In summary, our understanding of the bioeffects of the EMR is quite restrictive and further investigations are needed to answer the unsolved questions.
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Affiliation(s)
- Lingyu Liu
- Beijing Advanced Innovation Center for Structural Biology & Frontier Research Center for Biological Structure, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bing Huang
- Brain Function and Disease Laboratory, Department of Pharmacology, Shantou University Medical College, 22 Xin-Ling Road, Shantou 515041, China
| | - Yingxian Lu
- Westlake Laboratory of Life Sciences and Biomedicine, Xihu District, Hangzhou 310024, Zhejiang Province, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University; Institute of Biology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Yanyu Zhao
- Westlake Laboratory of Life Sciences and Biomedicine, Xihu District, Hangzhou 310024, Zhejiang Province, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University; Institute of Biology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Xiaping Tang
- Westlake Laboratory of Life Sciences and Biomedicine, Xihu District, Hangzhou 310024, Zhejiang Province, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University; Institute of Biology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Yigong Shi
- Beijing Advanced Innovation Center for Structural Biology & Frontier Research Center for Biological Structure, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
- Westlake Laboratory of Life Sciences and Biomedicine, Xihu District, Hangzhou 310024, Zhejiang Province, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University; Institute of Biology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
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Kostyn K, Boba A, Kozak B, Sztafrowski D, Widuła J, Szopa J, Preisner M. Transcriptome profiling of flax plants exposed to a low-frequency alternating electromagnetic field. Front Genet 2023; 14:1205469. [PMID: 37351344 PMCID: PMC10282948 DOI: 10.3389/fgene.2023.1205469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 05/17/2023] [Indexed: 06/24/2023] Open
Abstract
All living organisms on Earth evolved in the presence of an electromagnetic field (EMF), adapted to the environment of EMF, and even learned to utilize it for their purposes. However, during the last century, the Earth's core lost its exclusivity, and many EMF sources appeared due to the development of electricity and electronics. Previous research suggested that the EMF led to changes in intercellular free radical homeostasis and further altered the expression of genes involved in plant response to environmental stresses, inorganic ion transport, and cell wall constituent biosynthesis. Later, CTCT sequence motifs in gene promoters were proposed to be responsible for the response to EMF. How these motifs or different mechanisms are involved in the plant reaction to external EMF remains unknown. Moreover, as many genes activated under EMF treatment do not have the CTCT repeats in their promoters, we aimed to determine the transcription profile of a plant exposed to an EMF and identify the genes that are directly involved in response to the treatment to find the common denominator of the observed changes in the plant transcriptome.
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Affiliation(s)
- Kamil Kostyn
- Department of Genetics, Plant Breeding & Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Aleksandra Boba
- Department of Genetics, Plant Breeding & Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Bartosz Kozak
- Department of Genetics, Plant Breeding & Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Dariusz Sztafrowski
- Faculty of Electrical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Jan Widuła
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Jan Szopa
- Department of Genetics, Plant Breeding & Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
- Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Marta Preisner
- Department of Genetics, Plant Breeding & Seed Production, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
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Wang F, Liu Y, Du C, Gao R. Current Strategies for Real-Time Enzyme Activation. Biomolecules 2022; 12:biom12050599. [PMID: 35625527 PMCID: PMC9139169 DOI: 10.3390/biom12050599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Enzyme activation is a powerful means of achieving biotransformation function, aiming to intensify the reaction processes with a higher yield of product in a short time, and can be exploited for diverse applications. However, conventional activation strategies such as genetic engineering and chemical modification are generally irreversible for enzyme activity, and they also have many limitations, including complex processes and unpredictable results. Recently, near-infrared (NIR), alternating magnetic field (AMF), microwave and ultrasound irradiation, as real-time and precise activation strategies for enzyme analysis, can address many limitations due to their deep penetrability, sustainability, low invasiveness, and sustainability and have been applied in many fields, such as biomedical and industrial applications and chemical synthesis. These spatiotemporal and controllable activation strategies can transfer light, electromagnetic, or ultrasound energy to enzymes, leading to favorable conformational changes and improving the thermal stability, stereoselectivity, and kinetics of enzymes. Furthermore, the different mechanisms of activation strategies have determined the type of applicable enzymes and manipulated protocol designs that either immobilize enzymes on nanomaterials responsive to light or magnetic fields or directly influence enzymatic properties. To employ these effects to finely and efficiently activate enzyme activity, the physicochemical features of nanomaterials and parameters, including the frequency and intensity of activation methods, must be optimized. Therefore, this review offers a comprehensive overview related to emerging technologies for achieving real-time enzyme activation and summarizes their characteristics and advanced applications.
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Absalan Y, Gholizadeh M, Choi HJ. Magnetized solvents: Characteristics and various applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Radhakrishnan R. Magnetic field regulates plant functions, growth and enhances tolerance against environmental stresses. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1107-1119. [PMID: 31564775 PMCID: PMC6745571 DOI: 10.1007/s12298-019-00699-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/04/2019] [Accepted: 08/01/2019] [Indexed: 05/20/2023]
Abstract
Global climatic fluctuations and the increasing population have been responsible for the decline in the crop productivity. The chemical fertilizers, pesticides, and suitable genetic resources are commonly used for improving the crop yield. Magnetic field (MF) therapy for plants and animals has been found to be an effective and emerging tool to control diseases and increase tolerance against the adverse environment. Very limited studies have been attempted to determine the role of MF on plant tolerance against various stress conditions. This review aims to highlight the mitigating effect of MF on plants against abiotic and biotic stresses. MF interacts with seeds and plants and accelerates metabolism, which leads to an improved germination. The primary and secondary metabolites, enzyme activities, uptake of nutrient and water are reprogrammed to stimulate the plant growth and yield under favorable conditions. During adverse conditions of abiotic stress such as drought, salt, heavy metal contamination in soil, MF mitigates the stress effects by increasing antioxidants and reducing oxidative stress in plants. The stunted plant growth under different light and temperature conditions can be overcome by the exposure to MF. An MF treatment lowers the disease index of plants due to the modulation of calcium signaling, and proline and polyamines pathways. This review explores the basic and recent information about the impact of MF on plant survival against the adverse environment and emphasizes that thorough research is required to elucidate the mechanism of its interaction to protect the plants from biotic and abiotic stresses.
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Affiliation(s)
- Ramalingam Radhakrishnan
- Department of Microbiology, Karpagam Academy of Higher Education, Coimbatore, Tamilnadu 641 021 India
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6
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Wasak A, Drozd R, Jankowiak D, Rakoczy R. The influence of rotating magnetic field on bio-catalytic dye degradation using the horseradish peroxidase. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zhang X, Wan L, Li L, Xu Z, Su J, Li B, Huang J. Effects of magnetic fields on the enzymatic synthesis of naringin palmitate. RSC Adv 2018; 8:13364-13369. [PMID: 35542520 PMCID: PMC9079711 DOI: 10.1039/c8ra01441h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/04/2018] [Indexed: 11/21/2022] Open
Abstract
The effects of magnetic fields on the enzymatic synthesis of naringin palmitate were studied. Both immobilized Candida Antarctica lipase B (I-CALB) and I-CALB tert-amyl alcohol solution were treated with magnetic fields of 100, 300, or 500 mT for 1, 2, or 3 h. Characteristics including the initial rate and the conversion yields after 24 h of reaction with magnetized I-CALB (M-I-CALB) and magnetized I-CALB tert-amyl alcohol solution (M-I-CALB-S) were investigated. Magnetic field application to both I-CALB and I-CALB-S influenced I-CALB activity. Enzyme activity increased for M-I-CALB and M-I-CALB-S with some intensities and durations and reached maxima at certain frequencies. Enzyme inactivation was only found with M-I-CALB exposed to a strong magnetic field (500 mT) for a long time (3 h). Unlike M-I-CALB, M-I-CALB-S exposed to a strong magnetic field for a long time (500 mT, 3 h) showed greater activity enhancement relative to I-CALB. Fourier transform infrared spectroscopy (FT-IR) results showed that the relative secondary structure content of free CALB was changed only slightly by the differing magnetic field intensities and durations. These findings should prove valuable for using magnetic fields in enzymatic reactions. Immobilized CALB (I-CALB) and I-CALB solution was treated by magnetic fields and enzymatic reactions with them were compared.![]()
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Affiliation(s)
- Xia Zhang
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Liting Wan
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Lin Li
- School of Chemical Engineering and Energy Technology
- Dongguan University of Technology
- Dongguan
- China
| | - Zhenbo Xu
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Department of Microbial Pathogenesis
| | - Jianyu Su
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Bing Li
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Jianrong Huang
- School of Food Science
- Guangdong Pharmaceutical University
- Zhongshan 528458
- China
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Goldschmidt Lins P, Aparecida Silva A, Marina Piccoli Pugine S, Ivan Cespedes Arce A, José Xavier Costa E, Pires De Melo M. Effect of Exposure to Pulsed Magnetic Field on Microbiological Quality, Color and Oxidative Stability of Fresh Ground Beef. J FOOD PROCESS ENG 2016. [DOI: 10.1111/jfpe.12405] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricia Goldschmidt Lins
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
| | - Alessandra Aparecida Silva
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
| | - Silvana Marina Piccoli Pugine
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
| | - Aldo Ivan Cespedes Arce
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
| | - Ernane José Xavier Costa
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
| | - Mariza Pires De Melo
- Department of Basic Sciences (ZAB); Faculty of Animal Science and Food Engineering (FZEA); University of São Paulo (USP); Av. Duque de Caxias Norte 225, Campus Fernando Costa USP, CEP 13635-900 Pirassununga, São Paulo Brazil
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9
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Grémiaux A, Girard S, Guérin V, Lothier J, Baluška F, Davies E, Bonnet P, Vian A. Low-amplitude, high-frequency electromagnetic field exposure causes delayed and reduced growth in Rosa hybrida. JOURNAL OF PLANT PHYSIOLOGY 2016; 190:44-53. [PMID: 26643955 DOI: 10.1016/j.jplph.2015.11.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 11/06/2015] [Accepted: 11/06/2015] [Indexed: 06/05/2023]
Abstract
It is now accepted that plants perceive high-frequency electromagnetic field (HF-EMF). We wondered if the HF-EMF signal is integrated further in planta as a chain of reactions leading to a modification of plant growth. We exposed whole small ligneous plants (rose bush) whose growth could be studied for several weeks. We performed exposures at two different development stages (rooted cuttings bearing an axillary bud and 5-leaf stage plants), using two high frequency (900MHz) field amplitudes (5 and 200Vm(-1)). We achieved a tight control on the experimental conditions using a state-of-the-art stimulation device (Mode Stirred Reverberation Chamber) and specialized culture-chambers. After the exposure, we followed the shoot growth for over a one-month period. We observed no growth modification whatsoever exposure was performed on the 5-leaf stage plants. When the exposure was performed on the rooted cuttings, no growth modification was observed on Axis I (produced from the elongation of the axillary bud). Likewise, no significant modification was noted on Axis II produced at the base of Axis I, that came from pre-formed secondary axillary buds. In contrast, Axis II produced at the top of Axis I, that came from post-formed secondary buds consistently displayed a delayed and significant reduced growth (45%). The measurements of plant energy uptake from HF-EMF in this exposure condition (SAR of 7.2 10(-4)Wkg(-1)) indicated that this biological response is likely not due to thermal effect. These results suggest that exposure to electromagnetic field only affected development of post-formed organs.
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Affiliation(s)
- Alexandre Grémiaux
- Institut de Recherche en Horticulture et Semences-UMR 1345 IRHS, Université d'Angers-INRA-Agrocampus Ouest, ARCH-E, SFR 4207 QuaSaV, Campus du Végétal, CS 60057, F-49071 Beaucouzé, Cedex, France
| | - Sébastien Girard
- Université Blaise Pascal, Institut Pascal, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6602, F-63171 Aubière, France
| | - Vincent Guérin
- Institut de Recherche en Horticulture et Semences-UMR 1345 IRHS, Université d'Angers-INRA-Agrocampus Ouest, ARCH-E, SFR 4207 QuaSaV, Campus du Végétal, CS 60057, F-49071 Beaucouzé, Cedex, France
| | - Jérémy Lothier
- Institut de Recherche en Horticulture et Semences-UMR 1345 IRHS, Université d'Angers-INRA-Agrocampus Ouest, ARCH-E, SFR 4207 QuaSaV, Campus du Végétal, CS 60057, F-49071 Beaucouzé, Cedex, France
| | - František Baluška
- Institut für Zelluläre und Molekulare Botanik Zellbiologie der Pflanzen, Universität Bonn, Kirschallee 1, 53115 Bonn, Germany
| | - Eric Davies
- North Carolina State University, Department of Plant and Microbial Biology, Box 7612, Raleigh, NC 27695-7612 USA
| | - Pierre Bonnet
- Université Blaise Pascal, Institut Pascal, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6602, F-63171 Aubière, France
| | - Alain Vian
- Institut de Recherche en Horticulture et Semences-UMR 1345 IRHS, Université d'Angers-INRA-Agrocampus Ouest, ARCH-E, SFR 4207 QuaSaV, Campus du Végétal, CS 60057, F-49071 Beaucouzé, Cedex, France.
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10
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Poniedziałek B, Rzymski P, Karczewski J, Jaroszyk F, Wiktorowicz K. Reactive oxygen species (ROS) production in human peripheral blood neutrophils exposed in vitro to static magnetic field. Electromagn Biol Med 2013; 32:560-8. [PMID: 23631724 DOI: 10.3109/15368378.2013.773910] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of this study was to determine the effect of gradient static magnetic field (SMF) on reactive oxygen species (ROS) production in human neutrophils in peripheral blood in vitro. Blood samples collected from healthy individuals were incubated in an inhomogeneous SMF (in a south or north pole of the field) for 15, 30 or 45 minutes. The maximum value of induction (B max) amounted to ≈ 60 mT. To determine the strength of the ROS production, dihydrorhodamine (123DHR) as fluorophore and phorbol 12-myristate 13-acetate (PMA) as respiratory burst stimulator were used. 123DHR oxidation by ROS was measured by flow cytometry. The exposure of blood samples to SMF induced statistically significant changes in ROS production in unstimulated and PMA-stimulated neutrophils. The observed effects were highly correlated with the exposure time and depended on the orientation of the field. Although intracellular mechanisms underlying such interactions are not thoroughly understood, it could be presumed that SMF affects ROS metabolic oscillations and their formation and inactivation. This study emphasizes the importance of proper adjustment of exposure time to SMF for any potential therapeutic applications.
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Sefidbakht Y, Hosseinkhani S, Mortazavi M, Tavakkolnia I, Khellat MR, Shakiba-Herfeh M, Saviz M, Faraji-Dana R, Saboury AA, Sheibani N, Moosavi-Movahedi AA. Effects of 940 MHz EMF on luciferase solution: Structure, function, and dielectric studies. Bioelectromagnetics 2013; 34:489-98. [DOI: 10.1002/bem.21792] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 03/14/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Yahya Sefidbakht
- Institute of Biochemistry and Biophysics (IBB); University of Tehran; Tehran; Iran
| | - Saman Hosseinkhani
- Faculty of Biological Sciences, Department of Biochemistry; Tarbiat Modares University; Tehran; Iran
| | - Mojtaba Mortazavi
- Faculty of Biological Sciences, Department of Biochemistry; Tarbiat Modares University; Tehran; Iran
| | - Iman Tavakkolnia
- School of Electrical and Computer Engineering; University of Tehran; Tehran; Iran
| | - Mohammad R. Khellat
- Institute of Biochemistry and Biophysics (IBB); University of Tehran; Tehran; Iran
| | - Mahdi Shakiba-Herfeh
- School of Electrical and Computer Engineering; University of Tehran; Tehran; Iran
| | - Mehrdad Saviz
- School of Electrical and Computer Engineering; University of Tehran; Tehran; Iran
| | - Reza Faraji-Dana
- School of Electrical and Computer Engineering; University of Tehran; Tehran; Iran
| | | | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences and Pharmacology; University of Wisconsin School of Medicine and Public Health; Madison, Wisconsin
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Payez A, Ghanati F, Behmanesh M, Abdolmaleki P, Hajnorouzi A, Rajabbeigi E. Increase of seed germination, growth and membrane integrity of wheat seedlings by exposure to static and a 10-KHz electromagnetic field. Electromagn Biol Med 2013; 32:417-29. [PMID: 23343429 DOI: 10.3109/15368378.2012.735625] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
There is a large body of experimental data demonstrating various effects of magnetic field (MF) on plants growth and development. Although the mechanism(s) of perception of MF by plants is not yet elucidated, there is a possibility that like other stimuli, MF exerts its effects on plants by changing membrane integrity and conductance of its water channels, thereby influencing growth characteristics. In this study, the seeds of wheat (Triticum aestivum L. cv. Kavir) were imbibed in water overnight and then treated with or without a 30-mT static magnetic field (SMF) and a 10-kHz electromagnetic field (EMF) for 4 days, each 5 h. Water uptake of seeds reduced 5 h of the treatment with EMF but did not show changes in SMF treatment. Exposure to both magnetic fields did not affect germination percent of the seeds but increased the speed of germination, compared to the control group. Treatment with EMF significantly reduced seedling length and subsequently vigor index I, while SMF had no effects on these parameters. Both treatments significantly increased vigor index II, compared to the control group. These treatments also remarkably increased catalase activity and proline contents of seedlings but reduced the activity of peroxidase, the rate of lipid peroxidation and electrolyte leakages of membranes. The results suggest promotional effects of EMFs on membrane integrity and growth characteristics of wheat seedlings.
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Affiliation(s)
- Atefeh Payez
- Tarbiat Modares University (TMU) , Tehran , Iran
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13
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Poniedzialek B, Rzymski P, Nawrocka-Bogusz H, Jaroszyk F, Wiktorowicz K. The effect of electromagnetic field on reactive oxygen species production in human neutrophils in vitro. Electromagn Biol Med 2012; 32:333-41. [PMID: 23137127 DOI: 10.3109/15368378.2012.721845] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present study was undertaken in order to determine the effect of low frequency electromagnetic field (EMF) on reactive oxygen species (ROS) production in human neutrophils in peripheral blood in vitro. We investigated how differently generated EMF and several levels of magnetic induction affect ROS production. To evaluate the level of ROS production, two fluorescent dyes were used: 2'7'-dichlorofluorscein-diacetate and dihydrorhodamine. Phorbol 12-myristate 13-acetate (PMA), known as strong stimulator of the respiratory burst, was also used. Alternating magnetic field was generated by means of Viofor JPS apparatus. Three different levels of magnetic induction have been analyzed (10, 40 and 60 μT). Fluorescence of dichlorofluorescein and 123 rhodamine was measured by flow cytometry. The experiments demonstrated that only EMF tuned to the calcium ion cyclotron resonance frequency was able to affect ROS production in neutrophils. Statistical analysis showed that this effect depended on magnetic induction value of applied EMF. Incubation in EMF inhibited cell activity slightly in unstimulated neutrophils, whereas the activity of PMA-stimulated neutrophils has increased after incubation in EMF.
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Affiliation(s)
- Barbara Poniedzialek
- Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Poznań, Poland.
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Sağdilek E, Sebik O, Celebi G. Investigation of the effects of 50 Hz magnetic fields on platelet aggregation using a modified aggregometer. Electromagn Biol Med 2012; 31:382-93. [PMID: 22690688 DOI: 10.3109/15368378.2012.681822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE Electromagnetic fields have various effects on intracellular calcium levels, free oxygen radicals and various enzymes. The platelet activation pathway involves an increase in intracellular calcium levels and protein kinase C activation; and free oxygen radicals play a mediating role in this pathway. This study investigated whether 1 mT and 6 mT, 50 Hz magnetic fields had any effects on platelet aggregation. MATERIALS AND METHODS Blood from healthy volunteers was anticoagulated with either citrate or heparin. Each sample was divided in half and assigned to exposure and control groups. Platelet rich plasma samples in the exposure group were exposed to a 1 mT or a 6 mT, 50 Hz magnetic field for 1.5 or 1 h, respectively. The samples from both exposure and control groups were simultaneously evaluated using a modified optical aggregometer. Adenosine-diphosphate, collagen, and epinephrine were used as inducing agents. The slopes of the aggregation curve, the maximum values and the areas under the curves were recorded and compared. RESULTS A significant effect was observed only in the 1 mT-citrate group. It was found that magnetic field exposure significantly increased the maximum values and slopes of the collagen-induced aggregations. CONCLUSIONS It was found that magnetic field exposure has an activating effect on platelet aggregation.
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Affiliation(s)
- Engin Sağdilek
- Department of Biophysics, Faculty of Medicine, Ege University, Izmir, Turkey.
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15
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Hernández-Hernández H, Cruces-Solis H, Elías-Viñas D, Verdugo-Díaz L. Neurite outgrowth on chromaffin cells applying extremely low frequency magnetic fields by permanent magnets. Arch Med Res 2010; 40:545-50. [PMID: 20082867 DOI: 10.1016/j.arcmed.2009.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2009] [Accepted: 09/18/2009] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND AIMS There is an increasing interest about the effects of electromagnetic fields on health and clinical applications. Electromagnetic fields have been shown to promote differentiation and regeneration of many tissues. The purpose of the present study was to evaluate if a magnetic field (MF) varying in time is able to induce neurite outgrowth in cultured chromaffin cells. For this reason, a stimulation system was developed in order to generate a magnetic field, using permanent magnets as a supply. METHODS In this investigation we used a pair of permanent ferrite magnets. These were mounted in a mechanical system in which both magnets rotate around a culture Petri dish. The stimulation device was designed at Centro de Investigación y de Estudios Avanzados, Avanzados del IPN, Mexico City. Primary cultures of chromaffin cells were stimulated with a magnetic field of 6.4 mT and 4, 7, 10 or 12Hz (2h daily, during a 7-day period). After treatment, percentage of neurite outgrowth was calculated. RESULTS Our results show that the magnetic fields produced by rotating permanent magnets induced neurite outgrowth on chromaffin cells at 7 and 10Hz. CONCLUSIONS The present study provides evidence that MFs varying in time (7 and 10Hz) induce neurite outgrowth in chromaffin cells. These studies will contribute to elucidate the effect of noninvasive MF stimulus in order to apply it in future regeneration therapies. Also, the device designed could be used for different kind of cells and may work as a model for future clinical devices.
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Affiliation(s)
- Hugo Hernández-Hernández
- Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN, Col. San Pedro Zacatenco, México, D.F., México
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Effects of static magnetic field on activity and stability of immobilized α-amylase in chitosan bead. CATAL COMMUN 2010. [DOI: 10.1016/j.catcom.2009.11.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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De Souza A, Sueiro L, González LM, Licea L, Porras EP, Gilart F. Improvement of the growth and yield of lettuce plants by non-uniform magnetic fields. Electromagn Biol Med 2008; 27:173-84. [PMID: 18568935 DOI: 10.1080/15368370802118605] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Influence of pre-sowing magnetic treatments on plant growth and final yield of lettuce (cv. Black Seeded Simpson) were studied under organoponic conditions. Lettuce seeds were exposed to full-wave rectified sinusoidal non uniform magnetic fields (MFs) induced by an electromagnet at 120 mT (rms) for 3 min, 160 mT (rms) for 1 min, and 160 mT (rms) for 5 min. Non treated seeds were considered as controls. Plants were grown in experimental stonemasons (25.2 m(2)) of an organoponic and cultivated according to standard agricultural practices. During nursery and vegetative growth stages, samples were collected at regular intervals for growth analyses. At physiological maturity, the plants were harvested from each stonemason and the final yield and yield parameters were determined. In the nursery stage, the magnetic treatments induced a significant increase of root length and shoot height in plants derived from magnetically treated seeds. In the vegetative stage, the relative growth rates of plants derived from magnetically exposed seeds were greater than those shown by the control plants. At maturity stage, all magnetic treatments increased significantly (p < 0.05)--plant height, leaf area per plant, final yield per area, and fresh mass per plant--in comparison with the controls. Pre-sowing magnetic treatments would enhance the growth and final yield of lettuce crop.
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Affiliation(s)
- Angel De Souza
- Center for Environmental Research, Services and Technologies of Granma, Agricultural Research Institute Jorge Dimitrov, Granma, Cuba.
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Abstract
AbstractThe ability to respond to magnetic fields is ubiquitous among the five kingdoms of organisms. Apart from the mechanisms that are at work in bacterial magnetotaxis, none of the innumerable magnetobiological effects are as yet completely understood in terms of their underlying physical principles. Physical theories on magnetoreception, which draw on classical electrodynamics as well as on quantum electrodynamics, have greatly advanced during the past twenty years, and provide a basis for biological experimentation. This review places major emphasis on theories, and magnetobiological effects that occur in response to weak and moderate magnetic fields, and that are not related to magnetotaxis and magnetosomes. While knowledge relating to bacterial magnetotaxis has advanced considerably during the past 27 years, the biology of other magnetic effects has remained largely on a phenomenological level, a fact that is partly due to a lack of model organisms and model responses; and in great part also to the circumstance that the biological community at large takes little notice of the field, and in particular of the available physical theories. We review the known magnetobiological effects for bacteria, protists and fungi, and try to show how the variegated empirical material could be approached in the framework of the available physical models.
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Galland P, Pazur A. Magnetoreception in plants. JOURNAL OF PLANT RESEARCH 2005; 118:371-89. [PMID: 16283069 DOI: 10.1007/s10265-005-0246-y] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2005] [Accepted: 10/02/2005] [Indexed: 05/05/2023]
Abstract
This article reviews phenomena of magnetoreception in plants and provides a survey of the relevant literature over the past 80 years. Plants react in a multitude of ways to geomagnetic fields-strong continuous fields as well as alternating magnetic fields. In the past, physiological investigations were pursued in a somewhat unsystematic manner and no biological advantage of any magnetoresponse is immediately obvious. As a result, most studies remain largely on a phenomenological level and are in general characterised by a lack of mechanistic insight, despite the fact that physics provides several theories that serve as paradigms for magnetoreception. Beside ferrimagnetism, which is well proved for bacterial magnetotaxis and for some cases of animal navigation, two further mechanisms for magnetoreception are currently receiving major attention: (1) the "radical-pair mechanism" consisting of the modulation of singlet-triplet interconversion rates of a radical pair by weak magnetic fields, and (2) the "ion cyclotron resonance" mechanism. The latter mechanism centres around the fact that ions should circulate in a plane perpendicular to an external magnetic field with their Lamor frequencies, which can interfere with an alternating electromagnetic field. Both mechanisms provide a theoretical framework for future model-guided investigations in the realm of plant magnetoreception.
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Affiliation(s)
- Paul Galland
- Faculty of Biology, Philipps-Universität Marburg, 35032 Marburg, Germany.
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Radical Scavengers Suppress Low Frequency EMF Enhanced Proliferation in Cultured Cells and Stress Effects in Higher Plants. ACTA ACUST UNITED AC 2005. [DOI: 10.1007/s10669-005-4272-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Salamino F, Minafra R, Grano V, Diano N, Mita DG, Pontremoli S, Melloni E. Effect of extremely low frequency magnetic fields on calpain activation. Bioelectromagnetics 2005; 27:43-50. [PMID: 16283653 DOI: 10.1002/bem.20176] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The effects of low intensity, low frequency magnetic fields (MFs) on catalytic activity of the calcium dependent protease calpain was determined following the enzyme activation both in "in vitro" and "in vivo" conditions. We have observed that a 0.3 mT MF induces a significant increase in the requirement of the protease for this metal ion. This change is detectable at low [Ca(2+)] and disappears when the level of Ca(2+) is raised to saturating amounts. The observed effects are not due to transient MF(-) induced conformational changes occurring in calpain, but to direct effects of the MF on Ca(2+) ions, which become less available for the binding sites present in calpain. Altogether, these results indicate that exposure to low intensity, low frequency MFs alters the intracellular Ca(2+) "availability," thereby modifying the related cell response.
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Affiliation(s)
- Franca Salamino
- Department of Experimental Medicine-Biochemistry Section, and Centre of Excellence for Biomedical Research, University of Genoa, Viale Benedetto XV, Italy
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