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Murawska A, Migdał P, Mating M, Bieńkowski P, Berbeć E, Einspanier R. Metabolism gene expression in worker honey bees after exposure to 50Hz electric field - semi-field analysis. Front Zool 2024; 21:14. [PMID: 38807222 PMCID: PMC11134740 DOI: 10.1186/s12983-024-00535-1] [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: 02/14/2024] [Accepted: 05/20/2024] [Indexed: 05/30/2024] Open
Abstract
The investigation of the effects of artificial 50 Hz electric field (E-field) frequency on Apis mellifera is a relatively new field of research. Since the current literature focuses mainly on short-term effects, it is unknown whether E-fields have permanent effects on bees or whether their effects can be neutralized. In this study we assessed gene expression immediately after exposure to the E-field, as well as 7 days after exposure. The aim of this work was to identify potentially dysregulated gene transcripts in honey bees that correlate with exposure time and duration to E-fields.Newly emerged bees were marked daily with a permanent marker (one color for each group). Then bees were exposed to the 50 Hz E-field with an intensity of 5.0 kV/m or 10.0 kV/m for 1-3 h. After exposure, half of the bees were analyzed for gene expression changes. The other half were transferred to a colony kept in a mini-hive. After 7 days, marked bees were collected from the mini-hive for further analysis. Six regulated transcripts were selected of transcripts involved in oxidative phosphorylation (COX5a) and transcripts involved in endocrine functions (HBG-3, ILP-1), mitochondrial inner membrane transport (TIM10), and aging (mRPL18, mRPS30).Our study showed that in Apis mellifera the expression of selected genes is altered in different ways after exposure to 50 Hz electric fields -. Most of those expression changes in Cox5a, mRPL18, mRPS30, and HGB3, were measurable 7 days after a 1-3 h exposure. These results indicate that some E-field effects may be long-term effects on honey bees due to E-field exposure, and they can be observed 7 days after exposure.
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Affiliation(s)
- Agnieszka Murawska
- Department of Bees Breeding, Institute of Animal Husbandry, Wroclaw University of Environmental and Life Sciences, Wroclaw, 51-630, Poland.
| | - Paweł Migdał
- Department of Bees Breeding, Institute of Animal Husbandry, Wroclaw University of Environmental and Life Sciences, Wroclaw, 51-630, Poland
- Institute of Veterinary Biochemistry, Freie Universitaet Berlin, Berlin, 14163, Germany
| | - Moritz Mating
- Institute of Veterinary Biochemistry, Freie Universitaet Berlin, Berlin, 14163, Germany
| | - Paweł Bieńkowski
- Telecommunications and Teleinformatics Department, Wroclaw University of Science and Technology, 27 Wybrzeże Wyspiańskiego St., Wroclaw, 50-370, Poland
| | - Ewelina Berbeć
- Department of Bees Breeding, Institute of Animal Husbandry, Wroclaw University of Environmental and Life Sciences, Wroclaw, 51-630, Poland
| | - Ralf Einspanier
- Institute of Veterinary Biochemistry, Freie Universitaet Berlin, Berlin, 14163, Germany
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Abkhezr H, Mohaddes G, Nikniaz Z, Abbasalizad Farhangi M, Heydari H, Nikniaz L. The effect of Extremely Low Frequency Electromagnetic Field on spatial memory of mice and rats: A systematic review. LEARNING AND MOTIVATION 2023. [DOI: 10.1016/j.lmot.2023.101873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Kazemi M, Sahraei H, Aliyari H, Tekieh E, Saberi M, Tavacoli H, Meftahi GH, Ghanaati H, Salehi M, Hajnasrollah M. Effects of the Extremely Low Frequency Electromagnetic Fields on NMDA-Receptor Gene Expression and Visual Working Memory in Male Rhesus Macaques. Basic Clin Neurosci 2018; 9:167-176. [PMID: 30034647 PMCID: PMC6037432 DOI: 10.29252/nirp.bcn.9.3.167] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Introduction The present research aimed to examine Visual Working Memory (VWM) test scores, as well as hormonal, genomic, and brain anatomic changes in the male rhesus macaques exposed to Extremely Low Frequency Magnetic Field (ELF-MF). Methods Four monkeys were exposed to two different ELF-MF frequencies: 1 Hz (control) and 12 Hz (experiment) with 0.7 μT (magnitude) 4 h/d for 30 consecutive days. Before and after the exposure, VWM test was conducted using a coated devise on a movable stand. About 10 mL of the animals' blood was obtained from their femoral vain and used to evaluate their melatonin concentration. Blood lymphocytes were used for assaying the expressions of N-Methyl-D-aspartate NMDA-receptor genes expression before and after ELF exposure. Anatomical changes of hippocampus size were also assessed using MRI images. Results Results indicated that VWM scores in primates exposed to 12 Hz frequency ELF increased significantly. Plasma melatonin level was also increased in these animals. However, these variables did not change in the animals exposed to 1 Hz ELF. At last, expression of the NMDA receptors increased at exposure to 12 Hz frequency. However, hippocampal volume did not increase significantly in the animals exposed to both frequencies. Conclusion In short, these results indicate that ELF (12 Hz) may have a beneficial value for memory enhancement (indicated by the increase in VWM scores). This may be due to an increase in plasma melatonin and or expression of NMDA glutamate receptors. However, direct involvement of the hippocampus in this process needs more research.
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Affiliation(s)
- Masoomeh Kazemi
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hedayat Sahraei
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hamed Aliyari
- Faculty of Electrical, Biomedical and Mechatronics Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
| | - Elaheh Tekieh
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mehdi Saberi
- Department of Pharmacology, School of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hassan Tavacoli
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Hossein Ghanaati
- Medical Imaging Centre, Imam Khomeini University Hospital, Tehran, Iran
| | - Maryam Salehi
- Neuroscience Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mostafa Hajnasrollah
- Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran
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Sakhaie MH, Soleimani M, Pourheydar B, Majd Z, Atefimanesh P, Asl SS, Mehdizadeh M. Effects of Extremely Low-Frequency Electromagnetic Fields on Neurogenesis and Cognitive Behavior in an Experimental Model of Hippocampal Injury. Behav Neurol 2017; 2017:9194261. [PMID: 29259353 PMCID: PMC5702423 DOI: 10.1155/2017/9194261] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/23/2017] [Accepted: 08/08/2017] [Indexed: 01/19/2023] Open
Abstract
Exposure to extremely low-frequency electromagnetic fields may induce constant modulation in neuronal plasticity. In recent years, tremendous efforts have been made to design a suitable strategy for enhancing adult neurogenesis, which seems to be deterred due to brain senescence and several neurodegenerative diseases. In this study, we evaluated the effects of ELF-EMF on neurogenesis and memory, following treatment with trimethyltin chloride (TMT) as a neurotoxicant. The mice in all groups (n = 56) were injected with BrdU during the experiment for seven consecutive days to label newborn cells. Spatial memory was assessed by the Morris water maze (MWM) test. By the end of the experiment, neurogenesis and neuronal differentiation were assessed in the hippocampus, using immunohistochemistry and Western blot analysis. Based on the findings, exposure to ELF-EMF enhanced spatial learning and memory in the MWM test. ELF-EMF exposure significantly enhanced the number of BrdU+ and NeuN+ cells in the dentate gyrus of adult mice (P < 0.001 and P < 0.05, resp.). Western blot analysis revealed significant upregulation of NeuroD2 in ELF-EMF-exposed mice compared to the TMT-treated group (P < 0.05). These findings suggest that ELF-EMF might have clinical implications for the improvement of neurodegenerative processes and could help develop a novel therapeutic approach in regenerative medicine.
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Affiliation(s)
- Mohammad Hassan Sakhaie
- Cellular and Molecular Research Center and Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
- Department of Anatomy, Arak University of Medical Sciences, Arak, Iran
| | - Mansoureh Soleimani
- Cellular and Molecular Research Center and Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
| | - Bagher Pourheydar
- Urmia University of Medical Sciences, Faculty of Medicine, Neurophysiology Research Center, Department of Anatomy, Urmia, Iran
| | - Zahra Majd
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Pezhman Atefimanesh
- Cellular and Molecular Research Center, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Soleimani Asl
- Endometrium and Endometriosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Anatomy Department, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mehdi Mehdizadeh
- Cellular and Molecular Research Center, Faculty of Advanced Technologies in Medicine, Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
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Wang H, Peng R, Zhao L, Wang S, Gao Y, Wang L, Zuo H, Dong J, Xu X, Zhou H, Su Z. The relationship between NMDA receptors and microwave-induced learning and memory impairment: a long-term observation on Wistar rats. Int J Radiat Biol 2015; 91:262-9. [PMID: 25426698 DOI: 10.3109/09553002.2014.988893] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
UNLABELLED Abstract Purpose: To investigate whether high power microwave could cause continuous disorders to learning and memory in Wistar rats and to explore the underlying mechanisms. MATERIALS AND METHODS Eighty Wistar rats were exposed to a 2.856 GHz pulsed microwave source at a power density of 0 mW/cm(2) and 50 mW/cm(2) microwave for 6 min. The spatial memory ability, the structure of the hippocampus, contents of amino acids neurotransmitters in hippocampus and the expression of N-methyl-D-aspartic acid receptors (NMDAR) subunit 1, 2A and 2B (NR1, NR2A and NR2B) were detected at 1, 3, 6, 9, 12 and 18 months after microwave exposure. RESULTS Our results showed that the microwave-exposed rats showed consistent deficiencies in spatial learning and memory. The level of amino acid neurotransmitters also decreased after microwave radiation. The ratio of glutamate (Glu) and gammaaminobutyric acid (GABA) significantly decreased at 6 months. Besides, the hippocampus showed varying degrees of degeneration of neurons, increased postsynaptic density and blurred synaptic clefts in the exposure group. The NR1 and NR2B expression showed a significant decrease, especially the NR2B expression. CONCLUSIONS This study indicated that the content of amino acids neurotransmitters, the expression of NMDAR subunits and the variation of hippocampal structure might contribute to the long-term cognitive impairment after microwave exposure.
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Affiliation(s)
- Hui Wang
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine , Beijing , P. R. China
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