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Ghannam MM, Al-Otaibi HA, Alanazy ES, Elnagar D, Fouad AR, AlAyed MS, Aly AA. Magnetic field potential effects on the doxorubicin therapeutic activity in Ehrlich tumor growth. Saudi J Biol Sci 2021; 28:2566-2574. [PMID: 33935572 PMCID: PMC8071967 DOI: 10.1016/j.sjbs.2021.01.061] [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] [Received: 08/14/2020] [Revised: 01/24/2021] [Accepted: 01/27/2021] [Indexed: 11/23/2022] Open
Abstract
Aim Therapeutic choices for cancer patients include many combinations of therapeutic protocols. The present study aimed to investigate and discuss the combined effects of magnetic field and chemotherapy treatment on Ehrlich tumor-induced growth in Swiss albino mice. The benefits of both treatments are discussed and interpreted. Methods Fifty adult male mice were randomly divided into two groups; ten mice in the first group served as control group and forty in the second group which received a single dose IP injection of tumor fluid (0.02 Ml) to induce tumor. Ten days post injection to allow the tumor to growth, the 40 mice were sub- divided in to 4 sub-groups 10 mice pre each to introduce the treatment. Results The results indicated tumor growth inhibition regarding mean tumor volume variation (ml) presented. All treatments display tumor growth prevention effect compared to control untreated mice. Treatment with Dox + 7G (MF) exposure exhibited a significant inhibition of tumor growth than that treated alone with DOX or magnetic field; 82% inhibition for DOX + MF 7 G against 60% for 7 G , and 31% for DOX only. Optical density data show a higher values of the molar absorption coefficient ε for all treated groups than untreated one. The fluorescence emission spectra of Hb show an emission peaks λem at 465, 515, and 639 nm. Hematological examination might indicate to discriminative effects to RBCs, WBCs or/and Hb for all treated groups. Moreover, treatment with Dox + 7G MF shows a proper discriminative effects than that treatment with DOX or magnetic field only. Osmotic fragility (OF) test indicates that the combination between drug and magnetic field have nontoxic effect against RBCs membrane. Conclusion Our findings support further exploration of the potential of magnetic fields in cancer therapeutics, either as adjunct or primary therapy. It may be due to enhancing the drug interaction with tumor cells which increase the therapeutic index of DOX and resulted in increased anti-tumor activity against Ehrlich tumor models. These benefits promote the use of the magnetic field in cancer with chemotherapy over the other traditional treatment agents this highly adapted manner can be used in improving the clinical treatment protocol and fights against cancer.
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Affiliation(s)
- Magdy M Ghannam
- Biophysics Department, Faculty of Science, Cairo University, Egypt
| | - Hanin A Al-Otaibi
- Department of Physics, College of Science, King Saud University, Saudi Arabia
| | - Eman S Alanazy
- Department of Physics, College of Science, Hail University, Saudi Arabia
| | - Doaa Elnagar
- Zoology Department, Faculty of Women for Sciences, Arts and Education, Ain Shams University, Cairo, Egypt.,Department of Zoology, College of Science, King Saud University, Saudi Arabia
| | - Alaa R Fouad
- Department of Zoology, College of Science, King Saud University, Saudi Arabia
| | - Mohammes S AlAyed
- Department of Physics, College of Science, King Saud University, Saudi Arabia
| | - Amany A Aly
- Biophysics Department, Faculty of Science, Cairo University, Egypt
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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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Hosseinabadi MB, Khanjani N, Norouzi P, Mirzaii M, Biganeh J, Nazarkhani F. Investigating the effects of vitamins E and C on oxidative stress and hematological parameters among power plant workers: A double-blind randomized controlled clinical trial. Toxicol Ind Health 2020; 36:99-109. [PMID: 32191586 DOI: 10.1177/0748233720908993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study aimed to determine the effect of taking antioxidant vitamins including vitamins E and C in reducing oxidative stress levels and improving blood parameters. This double-blind randomized controlled trial study was conducted among the employees working in different parts of a power plant in Semnan, Iran, in 2017. A total of 91 employees were randomly allocated to four groups including vitamin E (400 units per day), vitamin C (1000 mg per day), vitamin E + C for 90 days, and control. The levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (Cat), and total antioxidant capacity (TAC) in plasma, and hematological parameters were measured in the participants before and after the intervention. A significant increase was seen in the mean level of SOD, Cat, and TAC in the vitamin-treated groups as well as a significant decrease in mean MOD in vitamin C and vitamin E groups after the intervention. In the intervention groups, the number of red blood cells, hematocrit, and the level of mean corpuscular hemoglobin (MCH) and MCH concentration significantly increased. After the intervention, the mean levels of MDA, SOD, and Cat in vitamin E group were significantly lower than the control group. The mean level of TAC decreased only in the vitamin C group compared to the control group. Taking vitamins E and C as nonenzymatic scavengers of free radicals appears to decrease lipid peroxidation and increase the level of antioxidant enzymes, which can be imbalanced by exposure to extremely low-frequency electromagnetic fields in power plant employees. Furthermore, some hematological parameters can be improved by consuming these vitamins.
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Affiliation(s)
| | - Narges Khanjani
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Pirasteh Norouzi
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mehdi Mirzaii
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Jamal Biganeh
- School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Freshteh Nazarkhani
- School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
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Potential effects of gamma irradiation on the stability and therapeutic activity of anticancer drug, doxorubicin. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2017.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Seif F, Reza Bayatiani M, Ansarihadipour H, Habibi G, Sadelaji S. Protective properties of Myrtus communis extract against oxidative effects of extremely low-frequency magnetic fields on rat plasma and hemoglobin. Int J Radiat Biol 2019; 95:215-224. [PMID: 30496018 DOI: 10.1080/09553002.2019.1542182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE This study investigates the protective properties of Myrtus communis extract against the oxidative effects of extremely low-frequency magnetic fields (ELFMF). Also, this study is aimed to analyze the conformational changes of hemoglobin, oxidative damages to plasma proteins and antioxidant power of plasma following exposure to ELFMF. MATERIALS AND METHODS Adult male rats were divided into 3 groups: (1) control, (2) ELFMF exposure, and (3) ELFMF exposure after M. communis extract administration. The magnetic field (0.7 mT, 50 Hz) was produced by a Helmholtz coil for one month, 2 hours a day. The M. communis extract was injected intraperitoneally at a dose of 0.5 mg/kg before exposure to ELFMF. The oxidative effects of ELFMF were studied by evaluating the hemoglobin, methemoglobin (metHb) and hemichrome levels, absorption spectrum of hemoglobin (200-700 nm), oxidative damage to plasma proteins by measuring protein carbonyl (PCO) levels and plasma antioxidant power according to the ferric reducing ability of plasma (FRAP). The mean and standard errors of the mean were determined for each group. One-way ANOVA analysis was used to compare the means of groups. The significance level was considered to be p < .05. Moreover, artificial neural network (ANN) analysis was used to identify the predictive parameters for estimating the oxyhemoglobin (oxyHb) concentration. RESULTS Exposure to ELFMF decreased the FRAP which was in concomitant with a significant increase in plasma PCO, metHb and hemichrome concentrations (p < .001). Oxidative modifications of Hb were shown by reduction in optical density at 340 nm (globin-heme interaction) and 420 nm (heme-heme interaction). Administration of M. communis extract increased FRAP values and decreased plasma POC, metHb, and hemichrome concentrations. Also, a significant increase in Hb absorbance at 340, 420, 542, and 577 nm showed the protective properties of M. communis extract against ELFMF-induced oxidative stress in erythrocytes. ANN analysis showed that optical absorption of hemoglobin at 520, 577, 542, and 630 nm and concentration of metHb and hemichrome were the most important parameters in predicting the oxyHb concentration. CONCLUSIONS Myrtus communis extract enhances the ability of erythrocytes and plasma to deal with oxidative conditions during exposure to ELFMF. Also, ANN analysis can predict the most important parameters in relation to Hb structure during oxidative stress.
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Affiliation(s)
- Fatemeh Seif
- a Department of Medical Physics and Radiotherapy , Arak University of Medical Sciences and Khansari Hospital , Arak , Iran
| | - Mohamad Reza Bayatiani
- a Department of Medical Physics and Radiotherapy , Arak University of Medical Sciences and Khansari Hospital , Arak , Iran
| | - Hadi Ansarihadipour
- b Department of Biochemistry and Genetics , Arak University of Medical Sciences , Arak , Iran
| | - Ghasem Habibi
- c Arak University of Medical Sciences, Infectious Diseases Research Center , Arak , Iran
| | - Samira Sadelaji
- c Arak University of Medical Sciences, Infectious Diseases Research Center , Arak , Iran
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Erdem O, Akay C, Cevher SC, Canseven AG, Aydın A, Seyhan N. Effects of Intermittent and Continuous Magnetic Fields on Trace Element Levels in Guinea Pigs. Biol Trace Elem Res 2018; 181:265-271. [PMID: 28534099 DOI: 10.1007/s12011-017-1053-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 05/11/2017] [Indexed: 10/19/2022]
Abstract
Electromagnetic fields (EMFs) can affect living cells due to biochemical changes, followed by changes in levels of trace elements in serum and different organs. This study focuses on the effect of whole body exposure to EMF, presented everywhere in our environment, and on the levels of trace elements in serum, femur, brain, kidney, and liver tissues. The analyses performed on 29 guinea pigs were divided into five groups. Guinea pigs were exposed to a magnetic field of 50 Hz of 1.5 mT. Groups A and B were exposed to the magnetic field for a period of 4 h/day continuously (4 h/day) for 4 and 7 days, respectively. Groups C and D were exposed to the magnetic field for a period of 4 h/day intermittently for 4 and 7 days, respectively. Group E animals were enrolled as control. Copper (Cu), zinc (Zn), calcium (Ca), and magnesium (Mg) levels were determined by atomic absorption spectroscopy in serum, femur, brain, kidney, and liver tissues in all guinea pigs. When compared to the control groups, the changes in the levels of Cu in serum samples, femur, and kidney tissues of the treated groups were statistically significant. The same was also true for the levels of Mg in the brain, kidney, and lung tissues. Our results suggest that in vivo continuous and intermittent exposure to EMF may cause disturbances in homeostasis of bioelements. These effects could be important risk factors for toxic effects of EMF, especially in relation to deterioration of bioelements.
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Affiliation(s)
- Onur Erdem
- Department of Pharmaceutical Toxicology, University of Health Sciences, Ankara, Turkey.
| | - Cemal Akay
- Department of Pharmaceutical Toxicology, Gulhane Military Medical Academy, Ankara, Turkey
| | - Sule Coşkun Cevher
- Department of Biology, Faculty of Science and Literature, Gazi University, Ankara, Turkey
| | - Ayse Gulnihal Canseven
- Department of Biophysics, Faculty of Medicine and Gazi Non-Ionizing Radiation Protection Center, Gazi University, Ankara, Turkey
| | - Ahmet Aydın
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Yeditepe University, Istanbul, Turkey
| | - Nesrin Seyhan
- Department of Biophysics, Faculty of Medicine and Gazi Non-Ionizing Radiation Protection Center, Gazi University, Ankara, Turkey
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Aldahoun MA, Jaafar MS, Al-Akhras MAH, Bououdina M. Enhanced nanocurcumin toxicity against (PC3) tumor and microbial by using magnetic field in vitro. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:843-853. [DOI: 10.1080/21691401.2016.1178137] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - M. S. Jaafar
- School of Physics, Universiti Sains Malaysia, USM, Penang, Malaysia
| | - M-Ali H. Al-Akhras
- Department of Physics, Bio-Medical Physics Laboratory, Jordan University of Science & Technology (JUST), Irbid, Jordan
| | - M. Bououdina
- Department of Physics, College of Science, University of Bahrain, AlZallaq, Kingdom of Bahrain
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Elferchichi M, Mercier J, Ammari M, Belguith H, Abdelmelek H, Sakly M, Lambert K. Subacute static magnetic field exposure in rat induces a pseudoanemia status with increase in MCT4 and Glut4 proteins in glycolytic muscle. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:1265-1273. [PMID: 26358208 DOI: 10.1007/s11356-015-5336-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 08/28/2015] [Indexed: 06/05/2023]
Abstract
The purpose of this study was to investigate the effect of subacute exposure to static magnetic fields (SMF) on hematological and muscle biochemical parameters in rats. Male Wistar rats, daily exposed to SMF, were exposed to SMF (128 mT, 1 h/day) during 15 consecutive days. SMF-exposed rats showed a significant decrease in red blood cell (RBC) count, hemoglobin (Hb), and hematocrit (Ht) values compared to sham-exposed rats (p < 0.05). Concomitant decreases of plasma iron level against increase in transferrin amount were also observed after SMF exposure (p < 0.0.05). In postprandial condition, SMF-exposed rats presented higher plasma lactate (p < 0.01). Additionally, SMF exposure increased monocarboxylate transporters (MCT4) and glucose transporter 4 (Glut4)'s contents only in glycolytic muscle (p < 0.05). SMF exposure induced alteration of hematological parameters; importantly, we noticed a pseudoanemia status, which seems to affect tissue oxygen delivery. Additionally, SMF exposure seems to favor the extrusion of lactate from the cell to the blood compartment. Given that, these arguments advocate for an adaptive response to a hypoxia status following SMF exposure.
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Affiliation(s)
- Miryam Elferchichi
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Université de Carthage, Jarzouna, 7021, Tunisia.
- PHYMEDEXP, INSERM U1046, CNRS UMR 9214, Université de Montpellier, Montpellier, France.
| | - Jacques Mercier
- PHYMEDEXP, INSERM U1046, CNRS UMR 9214, Université de Montpellier, Montpellier, France
| | - Mohamed Ammari
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Université de Carthage, Jarzouna, 7021, Tunisia
| | - Hatem Belguith
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Université de Carthage, Jarzouna, 7021, Tunisia
| | - Hafedh Abdelmelek
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Université de Carthage, Jarzouna, 7021, Tunisia
| | - Mohsen Sakly
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Université de Carthage, Jarzouna, 7021, Tunisia
| | - Karen Lambert
- PHYMEDEXP, INSERM U1046, CNRS UMR 9214, Université de Montpellier, Montpellier, France
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Li J, Yi Y, Cheng X, Zhang D, Irfan M. Study on the effect of magnetic field treatment of newly isolated Paenibacillus sp. BOTANICAL STUDIES 2015; 56:2. [PMID: 28510811 PMCID: PMC5430345 DOI: 10.1186/s40529-015-0083-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 01/13/2015] [Indexed: 06/07/2023]
Abstract
BACKGROUND Symbiotic nitrogen fixation in plants occurs in roots with the help of some bacteria which help in soil nitrogen fertility management. Isolation of significant environment friendly bacteria for nitrogen fixation is very important to enhance yield in plants. RESULTS In this study effect of different magnetic field intensity and treatment time was studied on the morphology, physiology and nitrogen fixing capacity of newly isolated Paenibaccilus sp. from brown soil. The bacterium was identified by 16S rDNA sequence having highest similarity (99%) with Paenibacillus sp as revealed by BLAST. Different magnetic intensities such as 100mT, 300mT and 500mT were applied with processing time of 0, 5, 10, 20 and 30 minutes. Of all these treatment 300mT with processing time of 10 minutes was found to be most suitable treatment. Results revealed that magnetic treatment improve the growth rate with shorter generation time leading to increased enzyme activities (catalase, peroxidase and superoxide dismutase) and nitrogen fixing efficiencies. High magnetic field intensity (500mT) caused ruptured cell morphology and decreased enzyme activities which lead to less nitrogen fixation. CONCLUSION It is concluded that appropriate magnetic field intensity and treatment time play a vital role in the growth of soil bacteria which increases the nitrogen fixing ability which affects the yield of plant. These results were very helpful in future breading programs to enhance the yield of soybean.
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Affiliation(s)
- Jie Li
- Key Laboratory of Preservation of Northeast Cultivated Land, Ministry of Agriculture, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer, College of Land and Enviroment, Shenyang Agricultural University, 120 dongling road, Shenyang, 110866 Liaoning China
| | - Yanli Yi
- Key Laboratory of Preservation of Northeast Cultivated Land, Ministry of Agriculture, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer, College of Land and Enviroment, Shenyang Agricultural University, 120 dongling road, Shenyang, 110866 Liaoning China
| | - Xilei Cheng
- Liaoning Academy of Environmental Sciences, Shenyang, China
| | - Dageng Zhang
- Key Laboratory of Preservation of Northeast Cultivated Land, Ministry of Agriculture, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer, College of Land and Enviroment, Shenyang Agricultural University, 120 dongling road, Shenyang, 110866 Liaoning China
| | - Muhammad Irfan
- Bioscience and Biotechnology College, Shenyang Agricultural University, 120 dongling road, Shenyang, 110866 China
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Health Implications of Electromagnetic Fields, Mechanisms of Action, and Research Needs. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/198609] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Electromagnetic fields (EMF) have been implicated to influence a range of bodily functions. Given their ubiquitous nature, widespread applications, and capability to produce deleterious effects, conclusive investigations of the health risks are critical. Accordingly, this paper has been constructed to weigh the bioeffects, possible biointeraction mechanisms, and research areas in bioelectromagnetics seeking immediate attention. The several gaps in the existing knowledge do not permit one to reach a concrete conclusion but possibility for harmful effects cannot be underestimated in absence of consistent findings and causal mechanisms. Several studies with appropriate methodologies reflect the capacity of electromagnetic radiations to cause adverse health effects and there are several credible mechanisms that can account for the observed effects. Hence, need of the hour is to activate comprehensive well-coordinated blind scientific investigations, overcoming all limitations and demerits of previous investigations especially replication studies to concretize the earlier findings. Furthermore, appropriate exposure assessment is crucial for identification of dose-response relation if any, and the elucidation of biological interaction mechanism. For the time being, the public should follow the precautionary principle and limit their exposure as much as possible.
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Hassan NS, Abdelkawi SA. Assessing of plasma protein denaturation induced by exposure to cadmium, electromagnetic fields and their combined actions on rat. Electromagn Biol Med 2013; 33:147-53. [DOI: 10.3109/15368378.2013.800101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Liu X, Zhao L, Yu D, Ma S, Liu X. Effects of extremely low frequency electromagnetic field on the health of workers in automotive industry. Electromagn Biol Med 2013; 32:551-9. [PMID: 23631695 DOI: 10.3109/15368378.2013.773909] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To observe the effects of extremely low frequency electromagnetic fields (ELF-EMFs) in automotive industry on occupational workers. METHODS A total of 704 workers were investigated, and 374 workers were chosen and divided into two groups (control group and exposure group) according to the inclusive criteria, namely male with age 20-40 years old and ≥ 2 years of exposure. The intensities of ELF-EMFs and noise were detected with EFA-300 Field Analyzer (Narda company, Pfullingen, Germany) and AWA5610D integrating sound level meter (Hangzhou Aihua Instruments Co., Ltd, Hangzhou, China), respectively. Survey data were collected by questionnaire, and the physical check-up was done in hospital. All the data were input into SPSS17.0 software (SPSS Inc, Chicago, USA), and the appropriate statistic analyses were carried out. RESULTS The intensity of EMFs in exposure group was significantly higher than that in control group (p < 0.05), while the noise in two workplaces showed no difference (p>0.05). The survey data collected by questionnaires showed that the symptoms of loss of hair in exposure group were significantly different as compared with that in control group (p < 0.05). The check-up parameters of cardiovascular, liver and hematology system showed significant differences between the two groups (p < 0.05). CONCLUSIONS Survey and check-up data suggest that exposure to ELF-EMFs might have effects on the nervous, cardiovascular, liver, and hematology system of workers.
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Affiliation(s)
- Xin Liu
- Department of Epidemiology and Statistics
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13
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Shams Lahijani M, Tehrani DM, Fereydouni N. Effects of 50 Hz extremely low frequency sinusoidal magnetic fields on the apoptosis of the hearts of preincubated chicken embryos at different levels of developments. Int J Radiat Biol 2013. [DOI: 10.3109/09553002.2013.754556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Martirosyan V, Baghdasaryan N, Ayrapetyan S. Bidirectional frequency-dependent effect of extremely low-frequency electromagnetic field onE. coliK-12. Electromagn Biol Med 2012; 32:291-300. [DOI: 10.3109/15368378.2012.712587] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Coskun O, Comlekci S. The influence of pulsed electric field on hematological parameters in rat. Toxicol Ind Health 2012; 29:862-6. [PMID: 22585932 DOI: 10.1177/0748233712446724] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of the present study is to investigate whether or not pulsed electric field (PEF) affects some hematological parameters in rats. Sixteen healthy male Wistar rats weighting 150–200 g were used and were randomly divided into two groups. Exposure group ( n = 8) was exposed to a PEF (10 kV m−1 for 1 h d−1) for 10 consecutive days. The control group rats ( n = 8) were not exposed to PEF. The following hematological parameters were measured in both the groups: white blood cells (WBCs), red blood cells (RBCs), hemoglobin (Hb), hematocrit (Ht) and platelets (PLTs). Some of the hematological parameters under investigation were similar in both the groups. Exposure group, exposed for 1 h d−1 during 10 consecutive days, induced a significant increase in the rates of WBC ( p < 0.05), RBC ( p < 0.05), Hb ( p < 0.05), Ht ( p < 0.05) and PLTs ( p < 0.05) in blood when compared with control. These results suggest that PEFs affect the hematological parameters in rat. Results of the parameters are statistically significant.
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Affiliation(s)
- Ozlem Coskun
- Department of Biomedical Device Technology, Süleyman Demirel University, Isparta, Turkey
| | - Selcuk Comlekci
- Department of Electronics and Communication Engineering, Süleyman Demirel University, Isparta, Turkey
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Del Seppia C, Mencacci R, Luschi P, Varanini M, Ghione S. Differential magnetic field effects on heart rate and nociception in anosmic pigeons. Bioelectromagnetics 2011; 33:309-19. [PMID: 21953246 DOI: 10.1002/bem.20708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Accepted: 09/01/2011] [Indexed: 11/09/2022]
Abstract
Several studies have shown that exposure to altered magnetic fields affects nociception by suppressing stress-induced hypoalgesia, and that this effect is reduced or abolished if the treatment is performed in the absence of light. This raises the question as to whether other sources of sensory stimuli may also modulate these magnetic effects. We investigated the possible role of olfaction in the magnetically induced effects on sensitivity to nociceptive stimuli and heart rate (HR) in restraint-stressed homing pigeons exposed to an Earth-strength, irregularly varying (<1 Hz) magnetic field. The magnetic treatment decreased the nociceptive threshold in normally smelling birds and an opposite effect was observed in birds made anosmic by nostril plugging. Conversely, no differential effect of olfactory deprivation was observed on HR, which was reduced by the magnetic treatment both in smelling and anosmic pigeons. The findings highlight an important role of olfactory environmental information in the mediation of magnetic effects on nociception, although the data cannot be interpreted unambiguously because of the lack of an additional control group of olfactory-deprived, non-magnetically exposed pigeons. The differential effects on a pigeon's sensitivity to nociceptive stimulus and HR additionally indicate that the magnetic stimuli affect nociception and the cardiovascular system in different ways.
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Affiliation(s)
- Cristina Del Seppia
- Institute of Clinical Physiology, National Council of Research, Pisa, Italy.
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Effects of exposure to 50 Hz, 1 Gauss magnetic field on reproductive traits in male albino rats. ACTA VET BRNO 2011. [DOI: 10.2754/avb201180010107] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The effects of extremely low frequency magnetic field ELF-MF (50 Hz/1 Gauss) on male fertility were studied in rats. Twenty eight adult male Wistar rats were divided into 4 groups, 2 experimental groups exposed to magnetic field for 21 days and 2 control groups (sham exposed). The first exposed group was sacrificed at the end of the exposure period, and the second exposed group was kept for extra 48 days post exposure to assess the delayed effects of exposure. Significant decrease in the testes weights, sperm motility, sperm count, normal sperms and live sperms was detected in the exposed groups compared to control. Serum testosterone concentrations were significantly increased after 21 days of exposure, and then these changes were corrected after 48 days post exposure. Superoxide dismutase, catalase activities and α-tocopherol concentration were significantly decreased after 21 days of exposure, while the later became non-significant after 48 days post exposure. L-ascorbate concentration was significantly increased after 21 days of exposure, and returned to normal 48 days post exposure. Histopathological examination of the testis from the exposed rats showed a disruption in its architecture with an increase in Leydig cell number and activity, whereas 48 days post exposure, the testicular germ cell layers increased with presence of high apoptotic rates. In conclusion, prolonged exposure to 50 Hz, 1 Gauss MF is biologically toxic to the testicular functions with oxidative stress on spermatogenesis that subsequently may affect male fertility and his sexual efficiency.
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Hristov J. Magnetic field assisted fluidization – a unified approach. Part 8. Mass transfer: magnetically assisted bioprocesses. REV CHEM ENG 2010. [DOI: 10.1515/revce.2010.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hanafy E, Elhafez S, Aly F, Elazhary M. Loss of Bone Calcium in Exposure to 50 Hz Magnetic Fields. Electromagn Biol Med 2009; 27:402-8. [DOI: 10.1080/15368370802473505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Akdag MZ, Bilgin MH, Dasdag S, Tumer C. Alteration of nitric oxide production in rats exposed to a prolonged, extremely low-frequency magnetic field. Electromagn Biol Med 2007; 26:99-106. [PMID: 17613037 DOI: 10.1080/15368370701357866] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The purpose of this study is to investigate the possible effect of an extremely low-frequency magnetic field (ELF-MF) on nitric oxide (NO) level. In this study, 27 male Sprague-Dawley rats were used. The rats were divided into three groups: two experimental and one control (sham-exposed). The first and second experimental group (n = 10) were exposed to 100 microT and 500 microT ELF-MF during 10 months, 2 h a day, respectively, and the third (n = 7) group was treated like an experimental group except for ELF-MF exposure in methacrylate boxes. After ELF-MF and sham exposure, serum nitrite levels were measured by Griess reaction. A significant reduction was observed in nitrite levels among the first and second experimental groups of rats and sham-exposed rats after exposure for 10 months, 2 h a day, to ELF-MF of 100 and 500 microT (p < 0.01). These results suggest that prolonged ELF-MF exposure at intensities of exposure limits, determined by ICNIRP for public and occupational, may reduce NO production probably affected by NO generation pathways.
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Affiliation(s)
- M Zulkuf Akdag
- Department of Biophysics, Medical School, Dicle University, Diyarbakir, Turkey
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S. Hassan N, S. Alam S. Genotoxicity and Molecular Changes of Hemoglobin Studies in Rats Exposed to 3 mT Static Magnetic Field. ACTA ACUST UNITED AC 2007. [DOI: 10.3923/jbs.2007.1121.1129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Udroiu I, Cristaldi M, Ieradi LA, Bedini A, Giuliani L, Tanzarella C. Clastogenicity and aneuploidy in newborn and adult mice exposed to 50 Hz magnetic fields. Int J Radiat Biol 2006; 82:561-7. [PMID: 16966183 DOI: 10.1080/09553000600876660] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
PURPOSE To detect possible clastogenic and aneugenic properties of a 50 Hz, 650 muT magnetic field. MATERIALS AND METHODS The micronucleus test with CREST (Calcinosis, Raynaud's phenomenon, Esophageal dismotility, Sclerodactility, Telangectasia) antibody staining was performed on liver and peripheral blood sampled from newborn mice exposed to an ELF (Extremely Low Frequency) magnetic field during the whole intra-uterine life (21 days), and on bone marrow and peripheral blood sampled from adult mice exposed to the same magnetic field for the same period. RESULTS Data obtained in newborn mice show a significant increase in micronuclei frequencies. In absolute terms, most of the induced micronuclei were CREST-negative (i.e., formed by a chromosome fragment). However, in relative terms, ELF exposure caused a two-fold increase in CREST-negative micronuclei and a four-fold increase in CREST-positive micronuclei (i.e., formed by a whole chromosome). No significant effect was recorded on exposed adults. CONCLUSIONS These findings suggest the need for investigation of aneugenic properties of ELF magnetic fields in order to establish a possible relationship to carcinogenesis.
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Affiliation(s)
- I Udroiu
- Dipartimento di Biologia Animale e dell'Uomo, Università, La Sapienza, Rome, Italy
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Sommer AM, Lerchl A. 50 Hz Magnetic Fields of 1 mT do not Promote Lymphoma Development in AKR/J Mice. Radiat Res 2006; 165:343-9. [PMID: 16494523 DOI: 10.1667/rr3513.1] [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: 11/03/2022]
Abstract
Some epidemiological studies suggest that exposure to power-frequency magnetic fields increases the risk of leukemia, especially in children with high residential exposures. In contrast, most animal studies did not find a correlation between magnetic-field exposure and hematopoietic diseases. The present study was performed to investigate whether chronic, high-level (1 mT) magnetic-field exposure had an influence on lymphoma development in a mouse strain that is genetically predisposed to thymic lymphoblastic lymphoma. Three groups of 160 unrestrained female AKR/J mice were sham-exposed or exposed to sinusoidal 50 Hz magnetic fields beginning at the age of 12 weeks for 32 weeks, 7 days per week, either for 24 h per day or only during nighttime (12 h). Exposure was carried out in a blind design. Exposure did not affect survival time, body weight, lymphoma development or hematological parameters. The resulting data do not support the hypothesis that exposure to sinusoidal 50 Hz magnetic fields is a significant risk factor for hematopoietic diseases, even at this relatively high exposure level.
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Affiliation(s)
- Angela M Sommer
- School of Engineering and Science, International University Bremen, Bremen, Germany
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