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Palomar-Gallego MA, Ramiro-Bargueño J, Cuerda-Galindo E, Linares-García-Valdecasas R, Gómez-Sánchez SM, Delcan J, Díaz-Gil G. An Experimental Murine Model to Study Lipoatrophia Semicircularis. Curr Issues Mol Biol 2024; 46:7986-7996. [PMID: 39194689 DOI: 10.3390/cimb46080472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/19/2024] [Accepted: 07/24/2024] [Indexed: 08/29/2024] Open
Abstract
Lipoatrophia semicircularis is a benign pathology characterized by subcutaneous tissue atrophy that affects the skin and related structures. Its etiology remains unclear; however, in the recent few years, it has been proposed that electrostatic charges could be a potential factor. Based on this hypothesis, the aim of this work is to study the cause-effect relation between electrostatic energy and LS, providing insights into the molecular mechanisms. For this purpose, an experimental murine model was created using obese mice. One group served as a control and the other groups involved charging clothes with varying connections to the ground: through the skin, through the clothes or not connected to the ground). Skin biopsies showed that the most significant lesions, including lipophagic granulomas with inflammatory infiltrate, were found in the first group (connected to the ground through the skin). Lipophagic reactions without an inflammatory infiltrate were observed in the other groups subjected to electrical discharges. In the control mice, no histological changes were observed. Oxidative processes were also measured in lower limbs tissue. Malondialdehyde levels significantly increased in the lower limbs after electrostatic discharges. However, the presence of ground through a wire attached to highly conductive clothes around the thigh significantly reduced the effect of electrostatic charges on lipid peroxidation. To our knowledge, this is the first study in which an experimental model has been used to reproduce LS induced by electrostatic energy, suggesting a cause-effect relationship between electrostatic charge and discharge with fat tissue lesion.
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Affiliation(s)
- María Angustias Palomar-Gallego
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain
- Grupo de Investigación Emergente de Bases Anatómicas, Moleculares y del Desarrollo Humano de la Universidad Rey Juan Carlos (GAMDES), 28922 Alcorcón, Spain
| | - Julio Ramiro-Bargueño
- Department of Signal Theory, Communications and Telematic Systems and Computing, Universidad Rey Juan Carlos, 28942 Fuenlabrada, Spain
| | - Esther Cuerda-Galindo
- Private Practice Consultation Ber-Matologie, Albrechtstraße 50, 12167 Berlin, Germany
| | | | - Stella M Gómez-Sánchez
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain
- Grupo de Investigación Emergente de Bases Anatómicas, Moleculares y del Desarrollo Humano de la Universidad Rey Juan Carlos (GAMDES), 28922 Alcorcón, Spain
| | - José Delcan
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain
- Grupo de Investigación Emergente de Bases Anatómicas, Moleculares y del Desarrollo Humano de la Universidad Rey Juan Carlos (GAMDES), 28922 Alcorcón, Spain
| | - Gema Díaz-Gil
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, 28922 Alcorcón, Spain
- Grupo de Investigación Emergente de Bases Anatómicas, Moleculares y del Desarrollo Humano de la Universidad Rey Juan Carlos (GAMDES), 28922 Alcorcón, Spain
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Dong L, Xiang J, Guo J, Chen G, Di G. Can static electric fields increase the activity of nitric oxide synthase and induce oxidative stress and damage of spleen? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:4093-4100. [PMID: 34398376 DOI: 10.1007/s11356-021-15853-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
With the rapid development of ultra-high-voltage (UHV) direct-current (DC) transmissions, the impact of static electric fields (SEF) in the vicinity of overhead UHV DC transmission lines on health has aroused much public concern. This study explored the effects of 56.3kV/m SEF on the spleen of mice. Results showed that SEF exposure of 21days significantly increased malonic dialdehyde content, superoxide dismutase activity, calcineurin activity, nitric oxide synthase (NOS) activity, and the mRNA expression levels of tumor necrosis factor-α (TNF-α) and nuclear factor-κB (NF-κB) in the spleen and caused the separation of nucleus and nuclear membrane, the disappearance of mitochondrial membrane, and the deficiency of mitochondrial cristae in splenic lymphocytes. By analysis and discussion, it was deduced that SEF could induce oxidative stress of the spleen by increasing the activity of NOS. Oxidative stress could further cause ultrastructural changes of splenic lymphocytes. Moreover, oxidative stress could cause the increase of the mRNA expression levels of TNF-α and NF-κB, which contributed to the occurrence of spleen inflammation.
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Affiliation(s)
- Li Dong
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Junli Xiang
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Jingyi Guo
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Guangdi Chen
- Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, Hangzhou, 310058, People's Republic of China
- Institute of Environmental Health, School of Public Health, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Guoqing Di
- Department of Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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YU JINGTONG, ZHAO CHUNXIA, GU XIAOYU, DI GUOQING, XU YAQIAN. IMPACTS OF STATIC ELECTRIC FIELD PRODUCED BY ULTRA-HIGH-VOLTAGE DIRECT-CURRENT TRANSMISSION LINES ON HIPPOCAMPAL PROTEIN EXPRESSION AND MORPHOLOGICAL STRUCTURE IN MICE. J MECH MED BIOL 2021. [DOI: 10.1142/s0219519421400716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Static electric field (SEF) from ultra-high-voltage direct-current (UHVDC) transmission lines has the potential to produce neurobiological effects. To explore these effects and elucidate their potential mechanisms, protein expression levels and morphological structure in the hippocampi of mice were investigated after SEF exposure. Mice from the Institute of Cancer Research were exposed to an environmental SEF induced by UHVDC transmission lines with the strength of 9.20–21.85[Formula: see text]kV/m for 35 days. Mouse body weight was measured weekly during the exposure. After the exposure, hippocampal Ca[Formula: see text]/calmodulin-dependent protein kinase II (CaMKII) and calcineurin (CaN) expression levels were assayed by Western blot. Hippocampal pathologic morphology and ultrastructure were observed using light microscopy and transmission electron microscopy, respectively. No significant differences in body weight, CaMKII and CaN expression levels, and hippocampal pathologic morphology were observed between mice in the exposed and the control groups. However, cytoplasmic vacuolization of the hippocampal neurons was observed in the exposed group. Thus, hippocampal neuron ultrastructure damage may be a mechanism of SEF-exposure-induced memory decline in mice.
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Affiliation(s)
- JINGTONG YU
- College of Science and Technology, Ningbo University, Ningbo 315212, P. R. China
| | - CHUNXIA ZHAO
- Ningbo Research Institute of Ecological and Environmental Sciences, Ningbo 315000, P. R. China
| | - XIAOYU GU
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - GUOQING DI
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - YAQIAN XU
- College of Science and Technology, Ningbo University, Ningbo 315212, P. R. China
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, P. R. China
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Petri AK, Schmiedchen K, Stunder D, Dechent D, Kraus T, Bailey WH, Driessen S. Biological effects of exposure to static electric fields in humans and vertebrates: a systematic review. Environ Health 2017; 16:41. [PMID: 28416002 PMCID: PMC5393013 DOI: 10.1186/s12940-017-0248-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 04/05/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND High-voltage direct current (HVDC) lines are the technology of choice for the transport of large amounts of energy over long distances. The operation of these lines produces static electric fields (EF), but the data reviewed in previous assessments were not sufficient to assess the need for any environmental limit. The aim of this systematic review was to update the current state of research and to evaluate biological effects of static EF. METHODS Using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) recommendations, we collected and evaluated experimental and epidemiological studies examining biological effects of exposure to static EF in humans (n = 8) and vertebrates (n = 40). RESULTS There is good evidence that humans and animals are able to perceive the presence of static EF at sufficiently high levels. Hair movements caused by electrostatic forces may play a major role in this perception. A large number of studies reported responses of animals (e.g., altered metabolic, immunologic or developmental parameters) to a broad range of static EF strengths as well, but these responses are likely secondary physiological responses to sensory stimulation. Furthermore, the quality of many of the studies reporting physiological responses is poor, which raises concerns about confounding. CONCLUSION The weight of the evidence from the literature reviewed did not indicate that static EF have adverse biological effects in humans or animals. The evidence strongly supported the role of superficial sensory stimulation of hair and skin as the basis for perception of the field, as well as reported indirect behavioral and physiological responses. Physical considerations also preclude any direct effect of static EF on internal physiology, and reports that some physiological processes are affected in minor ways may be explained by other factors. While this literature does not support a level of concern about biological effects of exposure to static EF, the conditions that affect thresholds for human detection and possible annoyance at suprathreshold levels should be investigated.
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Affiliation(s)
- Anne-Kathrin Petri
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Kristina Schmiedchen
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Dominik Stunder
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Dagmar Dechent
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Thomas Kraus
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - William H. Bailey
- Center for Occupational and Environmental Health Risk Assessment, Exponent, 17000 Science Drive, Suite 200, Bowie, MD 20715 USA
| | - Sarah Driessen
- Research Center for Bioelectromagnetic Interaction, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
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Effect of Pulsed Electric Field on Membrane Lipids and Oxidative Injury of Salmonella typhimurium. Int J Mol Sci 2016; 17:ijms17081374. [PMID: 27556460 PMCID: PMC5000769 DOI: 10.3390/ijms17081374] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/10/2016] [Accepted: 08/12/2016] [Indexed: 11/17/2022] Open
Abstract
Salmonella typhimurium cells were subjected to pulsed electric field (PEF) treatment at 25 kV/cm for 0–4 ms to investigate the effect of PEF on the cytoplasmic membrane lipids and oxidative injury of cells. Results indicated that PEF treatment induced a decrease of membrane fluidity of Salmonella typhimurium (S. typhimuriumi), possibly due to the alterations of fatty acid biosynthesis-associated gene expressions (down-regulation of cfa and fabA gene expressions and the up-regulation of fabD gene expression), which, in turn, modified the composition of membrane lipid (decrease in the content ratio of unsaturated fatty acids to saturated fatty acids). In addition, oxidative injury induced by PEF treatment was associated with an increase in the content of malondialdehyde. The up-regulation of cytochrome bo oxidase gene expressions (cyoA, cyoB, and cyoC) indicated that membrane damage was induced by PEF treatment, which was related to the repairing mechanism of alleviating the oxidative injury caused by PEF treatment. Based on these results, we achieved better understanding of microbial injury induced by PEF, suggesting that micro-organisms tend to decrease membrane fluidity in response to PEF treatment and, thus, a greater membrane fluidity might improve the efficiency of PEF treatment to inactivate micro-organisms.
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Harutyunyan H, Mkrtchyan V, Sukiasyan K, Sahakyan G, Poghosyan G, Soghomonyan A, Cherniavsky E, Bondarenko E, Shkumatov V. Effect of in vivo and in vitro exposure to electrostatic field on some hematological parameters in rats. Bioelectromagnetics 2016; 37:513-526. [PMID: 27530776 DOI: 10.1002/bem.22000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 07/27/2016] [Indexed: 11/05/2022]
Abstract
The aim of this study was to investigate the effect of the external electrostatic field (ESF) on some hematological parameters in rats. Both in vivo and in vitro experiments were carried out. In in vivo investigations, rats were exposed to ESF (200 kV/m) during short (1 h) and long periods (6 days, 6 h daily). For in vitro study, the blood of intact rats was exposed to ESF for 1 h. Blood hematology was measured using validated ABX Micros ESV 60 Veterinary Hematology Analyzer. DNA damage in blood leucocytes was detected by means of comet assay. ESF effect on blood cell count was mainly manifested in white blood cells (WBC) and platelets. Damage of WBC was shown both in vitro and in vivo despite alterations in the count. This means the observed increase in WBC count in some cases might be a result of WBC compensatory mobilization from the bone marrow. Red blood cell (RBC) count and related parameters were slightly affected by ESF. Nevertheless, alterations in the shape and size of RBC were manifested. All ESF effects were extinguished in 14 days after the end of exposure. Bioelectromagnetics. 37:513-526, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Hayk Harutyunyan
- Laboratory of Biochemical and Biophysical Investigations, Scientific-Research Centre, Yerevan State Medical University After Mkhitar Heratsi, Yerevan, Republic of Armenia.,Laboratory of Adenyline Compaunds Metabolism, H. Buniatian Institute of Biochemistry, National Academy of Sciences of Republic of Armenia, Yerevan, Republic of Armenia
| | - Vahe Mkrtchyan
- Chair of Therapy Clinical Diagnostics and Pharmacology, Faculty of Veterinary Medicine and Animal Husbandry, Armenian National Agrarian University, Yerevan, Republic of Armenia
| | - Karine Sukiasyan
- Chair of Therapy Clinical Diagnostics and Pharmacology, Faculty of Veterinary Medicine and Animal Husbandry, Armenian National Agrarian University, Yerevan, Republic of Armenia
| | - Gohar Sahakyan
- Laboratory of Biochemical and Biophysical Investigations, Scientific-Research Centre, Yerevan State Medical University After Mkhitar Heratsi, Yerevan, Republic of Armenia
| | - Gayane Poghosyan
- Laboratory of Biochemical and Biophysical Investigations, Scientific-Research Centre, Yerevan State Medical University After Mkhitar Heratsi, Yerevan, Republic of Armenia
| | - Ani Soghomonyan
- Laboratory of Biochemical and Biophysical Investigations, Scientific-Research Centre, Yerevan State Medical University After Mkhitar Heratsi, Yerevan, Republic of Armenia
| | - Eugene Cherniavsky
- Laboratory of Biochemistry of Drugs, Research Institute for Physical Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Ekaterina Bondarenko
- Laboratory of Biochemistry of Drugs, Research Institute for Physical Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Vladimir Shkumatov
- Laboratory of Biochemistry of Drugs, Research Institute for Physical Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
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