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Shih YW, Hung CS, Huang CC, Chou KR, Niu SF, Chan S, Tsai HT. The Association Between Smartphone Use and Breast Cancer Risk Among Taiwanese Women: A Case-Control Study. Cancer Manag Res 2020; 12:10799-10807. [PMID: 33149685 PMCID: PMC7605549 DOI: 10.2147/cmar.s267415] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/18/2020] [Indexed: 12/26/2022] Open
Abstract
Introduction Breast cancer is a common malignancy worldwide. Smartphones have gradually become indispensable to our modern lives and have already changed lifestyles of human beings. To our best knowledge, no study has investigated the relationship between smartphone use and breast cancer. This case-control study purposely investigated the relationship between smartphone use and breast cancer risk. Materials and Methods This was a case-control study comprising 894 healthy controls and 211 patients with breast cancer. All participants were asked to respond to standard questionnaires to collect information on sleep quality, smartphone addiction, and smartphone use. Results Participants with smartphone addiction had a significantly higher 1.43-fold risk of breast cancer. Individuals with the habitual behavior of smartphone use >4.5 minutes before bedtime had a significantly increased 5.27-fold risk of breast cancer compared to those who used a smartphone for ≤4.5 minutes before bedtime. Additionally, a closer distance between the smartphone and the breasts when using the smartphone exhibited a significantly increased 1.59-fold risk. Participants who carried their smartphone near their chest or waist-abdomen area had significantly increased 5.03-fold and 4.06-fold risks of breast cancer, respectively, compared to those who carried the smartphone below the waist. Moreover, there was a synergistic effect of smartphone addiction and smartphone use of >4.5 minutes before bedtime which increased the breast cancer risk. Conclusion Excessive smartphone use significantly increased the risk of breast cancer, particularly for participants with smartphone addiction, a close distance between the breasts and smartphone, and the habit of smartphone use before bedtime.
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Affiliation(s)
- Ya-Wen Shih
- School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan
| | - Chin-Sheng Hung
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Cheng-Chiao Huang
- Division of Breast Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Kuei-Ru Chou
- School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.,Center for Nursing and Healthcare Research in Clinical Practice Application, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Nursing, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan.,Psychiatric Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Shu-Fen Niu
- Post-Baccalaureate Program in Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.,Department of Nursing, Shin Kong Wu Ho Su Memorial Hospital, Taipei, Taiwan
| | - Sally Chan
- UON Singapore Campus, Univesrity of Newcastle, Newcastle, NSW, Australia
| | - Hsiu-Ting Tsai
- School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.,Post-Baccalaureate Program in Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan
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Alahmad YM, Aljaber M, Saleh AI, Yalcin HC, Aboulkassim T, Yasmeen A, Batist G, Moustafa AEA. Effect of cell-phone radiofrequency on angiogenesis and cell invasion in human head and neck cancer cells. Head Neck 2018; 40:2166-2171. [PMID: 29756334 DOI: 10.1002/hed.25210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/23/2018] [Accepted: 03/21/2018] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Today, the cell phone is the most widespread technology globally. However, the outcome of cell-phone radiofrequency on head and neck cancer progression has not yet been explored. METHODS The chorioallantoic membrane (CAM) and human head and neck cancer cell lines, FaDu and SCC25, were used to explore the outcome of cell-phone radiofrequency on angiogenesis, cell invasion, and colony formation of head and neck cancer cells, respectively. Western blot analysis was used to investigate the impact of the cell phone on the regulation of E-cadherin and Erk1/Erk2 genes. RESULTS Our data revealed that cell-phone radiofrequency promotes angiogenesis of the CAM. In addition, the cell phone enhances cell invasion and colony formation of human head and neck cancer cells; this is accompanied by a downregulation of E-cadherin expression. More significantly, we found that the cell phone can activate Erk1/Erk2 in our experimental models. CONCLUSION Our investigation reveals that cell-phone radiofrequency could enhance head and neck cancer by stimulating angiogenesis and cell invasion via Erk1/Erk2 activation.
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Affiliation(s)
| | | | | | | | - Tahar Aboulkassim
- Segal Cancer Centre, Lady Davis Institute for Medical Research of the Sir Mortimer B. Davis-Jewish General Hospital
| | - Amber Yasmeen
- Segal Cancer Centre, Lady Davis Institute for Medical Research of the Sir Mortimer B. Davis-Jewish General Hospital
| | - Gerald Batist
- Segal Cancer Centre, Lady Davis Institute for Medical Research of the Sir Mortimer B. Davis-Jewish General Hospital.,Oncology Department, McGill University, Montreal, Quebec, Canada
| | - Ala-Eddin Al Moustafa
- College of Medicine, Qatar University, Doha, Qatar.,Biomedical Research Centre, Qatar University, Doha, Qatar.,Oncology Department, McGill University, Montreal, Quebec, Canada.,Syrian Research Cancer Centre of the Syrian Society against Cancer, Aleppo, Syria
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Abstract
This study concerns the effects of microwave on health because they pervade diverse fields of our lives. The brain has been recognized as one of the organs that is most vulnerable to microwave radiation. Therefore, in this article, we reviewed recent studies that have explored the effects of microwave radiation on the brain, especially the hippocampus, including analyses of epidemiology, morphology, electroencephalograms, learning and memory abilities and the mechanisms underlying brain dysfunction. However, the problem with these studies is that different parameters, such as the frequency, modulation, and power density of the radiation and the irradiation time, were used to evaluate microwave radiation between studies. As a result, the existing data exhibit poor reproducibility and comparability. To determine the specific dose-effect relationship between microwave radiation and its biological effects, more intensive studies must be performed.
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Affiliation(s)
- Wei-Jia Zhi
- Laboratory of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Li-Feng Wang
- Laboratory of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, 100850, China.
| | - Xiang-Jun Hu
- Laboratory of Experimental Pathology, Beijing Institute of Radiation Medicine, Beijing, 100850, China.
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Gläser K, Rohland M, Kleine-Ostmann T, Schrader T, Stopper H, Hintzsche H. Effect of Radiofrequency Radiation on Human Hematopoietic Stem Cells. Radiat Res 2016; 186:455-465. [PMID: 27710704 DOI: 10.1667/rr14405.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Exposure to electromagnetic fields in the radiofrequency range is ubiquitous, mainly due to the worldwide use of mobile communication devices. With improving technologies and affordability, the number of cell phone subscriptions continues to increase. Therefore, the potential effect on biological systems at low-intensity radiation levels is of great interest. While a number of studies have been performed to investigate this issue, there has been no consensus reached based on the results. The goal of this study was to elucidate the extent to which cells of the hematopoietic system, particularly human hematopoietic stem cells (HSC), were affected by mobile phone radiation. We irradiated HSC and HL-60 cells at frequencies used in the major technologies, GSM (900 MHz), UMTS (1,950 MHz) and LTE (2,535 MHz) for a short period (4 h) and a long period (20 h/66 h), and with five different intensities ranging from 0 to 4 W/kg specific absorption rate (SAR). Studied end points included apoptosis, oxidative stress, cell cycle, DNA damage and DNA repair. In all but one of these end points, we detected no clear effect of mobile phone radiation; the only alteration was found when quantifying DNA damage. Exposure of HSC to the GSM modulation for 4 h caused a small but statistically significant decrease in DNA damage compared to sham exposure. To our knowledge, this is the first published study in which putative effects (e.g., genotoxicity or influence on apoptosis rate) of radiofrequency radiation were investigated in HSC. Radiofrequency electromagnetic fields did not affect cells of the hematopoietic system, in particular HSC, under the given experimental conditions.
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Affiliation(s)
- Katharina Gläser
- a Institute of Pharmacology and Toxicology, University of Würzburg, Germany
| | - Martina Rohland
- b Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | | | | | - Helga Stopper
- a Institute of Pharmacology and Toxicology, University of Würzburg, Germany
| | - Henning Hintzsche
- a Institute of Pharmacology and Toxicology, University of Würzburg, Germany
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Gryz K, Karpowicz J. Radiofrequency electromagnetic radiation exposure inside the metro tube infrastructure in Warszawa. Electromagn Biol Med 2016; 34:265-73. [PMID: 26444204 DOI: 10.3109/15368378.2015.1076447] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Antennas from various wireless communications systems [e.g. mobile phones base transceiver stations (BTS) and handsets used by passengers, public Internet access, staff radiophone transmitters used between engine-drivers and traffic operators] emitting radiofrequency electromagnetic radiation (RF-EMR) are used inside underground metro public transportation. Frequency-selective exposimetric investigations of RF-EMR exposure inside the metro infrastructure in Warsaw (inside metro cars passing between stations and on platforms) were performed. The statistical parameters of exposure to the E-field were analyzed for each frequency range and for a total value (representing the wide-band result of measurements of complex exposure). The recorded exposimetric profiles showed the dominant RF-EMR sources: handsets and BTS of mobile communication systems (GSM 900 and UMTS 2100) and local wireless Internet access (WiFi 2G). Investigations showed that the GSM 900 system is the dominant source of exposure - BTS (incessantly active) on platforms, and handsets - used by passengers present nearby during the tube drive. The recorded E-field varies between sources (for BTS were: medians - 0.22 V/m and 75th percentile - 0.37 V/m; and for handsets: medians - 0.28 V/m and 75th percentile - 0.47 V/m). Maximum levels (peaks) of exposure recorded from mobile handsets exceeded 10 V/m (upper limit of used exposimeters). Broadband measurements of E-field, including the dominant signal emitted by staff radiophones (151 MHz), showed that the level of this exposure of engine-drivers does not exceed 2.5 V/m.
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Affiliation(s)
- Krzysztof Gryz
- a Laboratory of Electromagnetic Hazards , Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Warszawa , Poland
| | - Jolanta Karpowicz
- a Laboratory of Electromagnetic Hazards , Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Warszawa , Poland
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Jeong YJ, Kang GY, Kwon JH, Choi HD, Pack JK, Kim N, Lee YS, Lee HJ. 1950 MHz Electromagnetic Fields Ameliorate Aβ Pathology in Alzheimer's Disease Mice. Curr Alzheimer Res 2015; 12:481-92. [PMID: 26017559 PMCID: PMC5445699 DOI: 10.2174/156720501205150526114448] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/16/2015] [Accepted: 03/21/2015] [Indexed: 12/28/2022]
Abstract
The involvement of radiofrequency electromagnetic fields (RF-EMF) in the neurodegenerative disease, especially Alzheimer's disease (AD), has received wide consideration, however, outcomes from several researches have not shown consistency. In this study, we determined whether RF-EMF influenced AD pathology in vivo using Tg-5xFAD mice as a model of AD-like amyloid β (Aβ) pathology. The transgenic (Tg)-5xFAD and wild type (WT) mice were chronically exposed to RF-EMF for 8 months (1950 MHz, SAR 5W/kg, 2 hrs/day, 5 days/week). Notably, chronic RFEMF exposure significantly reduced not only Aβ plaques, APP, and APP carboxyl-terminal fragments (CTFs) in whole brain including hippocampus and entorhinal cortex but also the ratio of Aβ42 and Aβ40 peptide in the hippocampus of Tg-5xFAD mice. We also found that parenchymal expression of β-amyloid precursor protein cleaving enzyme 1(BACE1) and neuroinflammation were inhibited by RF-EMF exposure in Tg-5xFAD. In addition, RF-EMF was shown to rescue memory impairment in Tg-5xFAD. Moreover, gene profiling from microarray data using hippocampus of WT and Tg- 5xFAD following RF-EMF exposure revealed that 5 genes (Tshz2, Gm12695, St3gal1, Isx and Tll1), which are involved in Aβ, are significantly altered inTg-5xFAD mice, exhibiting different responses to RF-EMF in WT or Tg-5xFAD mice; RF-EMF exposure in WT mice showed similar patterns to control Tg-5xFAD mice, however, RF-EMF exposure in Tg- 5xFAD mice showed opposite expression patterns. These findings indicate that chronic RF-EMF exposure directly affects Aβ pathology in AD but not in normal brain. Therefore, RF-EMF has preventive effects against AD-like pathology in advanced AD mice with a high expression of Aβ, which suggests that RF-EMF can have a beneficial influence on AD.
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Affiliation(s)
- Ye Ji Jeong
- Division of Radiation Effects, Korea Institute of Radiological & Medical Sciences, Seoul, 139-706, Korea
| | - Ga-Young Kang
- Graduate School of Pharmaceutical
Sciences, Ewha Womans University, Seoul, 120-750, Korea
| | - Jong Hwa Kwon
- Department of EMF Research Team, Radio and Broadcasting Technology Laboratory, ETRI, Daejon, 305-700, Korea
| | - Hyung-Do Choi
- Department of EMF Research Team, Radio and Broadcasting Technology Laboratory, ETRI, Daejon, 305-700, Korea
| | - Jeong-Ki Pack
- Department of Radio Sciences and Engineering, College of Engineering, Chungnam National University, Daejon, 305-764, Korea
| | - Nam Kim
- School of Electrical and Computer Engineering, Chungbuk National University, Cheongju,Chungbuk,362-763, Korea
| | - Yun-Sil Lee
- Graduate School of Pharmaceutical
Sciences, Ewha Womans University, Seoul, 120-750, Korea
| | - Hae-June Lee
- Division of Radiation Effects, Korea Institute of Radiological & Medical Sciences, Seoul, 139-706, Korea
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Zhao L, Sun C, Xiong L, Yang Y, Gao Y, Wang L, Zuo H, Xu X, Dong J, Zhou H, Peng R. MicroRNAs: Novel Mechanism Involved in the Pathogenesis of Microwave Exposure on Rats' Hippocampus. J Mol Neurosci 2014; 53:222-30. [PMID: 24748327 DOI: 10.1007/s12031-014-0289-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 03/18/2014] [Indexed: 10/25/2022]
Abstract
Microwave-induced adverse health outcomes have been gaining much attention in recent years. The hippocampus is sensitive and vulnerable to microwave exposure. Studies from our group and others showed that microwave-induced structural and functional injury of hippocampus, accompanied with alteration of gene and protein expression. It has been demonstrated that microRNAs (miRNAs) were involved in the physiological and pathological processes of brain. In this study, the miRNAs expression profiles of microwave-exposed hippocampus were detected by microarray analysis and verified by real-time polymerase chain reaction (PCR). At 7 days after 30 mW/cm(2) microwave exposure, the expression of 12 miRNAs increased, while other 70 miRNAs decreased in rats' hippocampus. However, most of miRNAs restored to normal levels at 14 days after exposure, only two upregulated miRNAs and 14 downregulated miRNAs were detected. Gene transcription, neuroprotection and receptors function related target genes were predicated by miRDB, miRbase and miRanda. Moreover, these differentially expressed miRNAs were involved in brain-related signaling pathways, such as synaptic vesicle cycle, long-term depression, calcium signaling and neurotrophin signaling pathways. In conclusion, we successfully characterized the miRNA profiles in microwave-exposed hippocampus, and that will be helpful to clarify the molecular mechanism and provide potential therapeutic targets.
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Affiliation(s)
- Li Zhao
- Department of Experimental Pathology, Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, People's Republic of China
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