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He Y, Xie Z, Li J, Meng Z, Xue D, Hao C. Global Trends in mHealth and Medical Education Research: Bibliometrics and Knowledge Graph Analysis. JMIR MEDICAL EDUCATION 2024; 10:e52461. [PMID: 38841983 PMCID: PMC11185284 DOI: 10.2196/52461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 03/17/2024] [Accepted: 05/14/2024] [Indexed: 06/07/2024]
Abstract
Background Mobile health (mHealth) is an emerging mobile communication and networking technology for health care systems. The integration of mHealth in medical education is growing extremely rapidly, bringing new changes to the field. However, no study has analyzed the publication and research trends occurring in both mHealth and medical education. Objective The aim of this study was to summarize the current application and development trends of mHealth in medical education by searching and analyzing published articles related to both mHealth and medical education. Methods The literature related to mHealth and medical education published from 2003 to 2023 was searched in the Web of Science core database, and 790 articles were screened according to the search strategy. The HistCite Pro 2.0 tool was used to analyze bibliometric indicators. VOSviewer, Pajek64, and SCImago Graphica software were used to visualize research trends and identify hot spots in the field. Results In the past two decades, the number of published papers on mHealth in medical education has gradually increased, from only 3 papers in 2003 to 130 in 2022; this increase became particularly evident in 2007. The global citation score was determined to be 10,600, with an average of 13.42 citations per article. The local citation score was 96. The United States is the country with the most widespread application of mHealth in medical education, and most of the institutions conducting in-depth research in this field are also located in the United States, closely followed by China and the United Kingdom. Based on current trends, global coauthorship and research exchange will likely continue to expand. Among the research journals publishing in this joint field, journals published by JMIR Publications have an absolute advantage. A total of 105 keywords were identified, which were divided into five categories pointing to different research directions. Conclusions Under the influence of COVID-19, along with the popularization of smartphones and modern communication technology, the field of combining mHealth and medical education has become a more popular research direction. The concept and application of digital health will be promoted in future developments of medical education.
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Affiliation(s)
- Yuanhang He
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhihong Xie
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jiachen Li
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ziang Meng
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dongbo Xue
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chenjun Hao
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Martin C, Evrard B, Percevault F, Ryder K, Darde T, Lardenois A, Zhadobov M, Sauleau R, Chalmel F, Le Dréan Y, Habauzit D. Transcriptional landscape of human keratinocyte models exposed to 60-GHz millimeter-waves. Toxicol In Vitro 2024; 97:105808. [PMID: 38484921 DOI: 10.1016/j.tiv.2024.105808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 03/05/2024] [Accepted: 03/09/2024] [Indexed: 03/19/2024]
Abstract
The use of millimeter waves (MMW) will exponentially grow in the coming years due to their future utilization in 5G/6G networks. The question of possible biological effects at these frequencies has been raised. In this present study, we aimed to investigate gene expression changes under exposure to MMW using the Bulk RNA Barcoding and sequencing (BRB-seq) technology. To address this issue, three exposure scenarios were performed aiming at: i) comparing the cellular response of two primary culture of keratinocytes (HEK and NHEK) and one keratinocyte derivate cell line (HaCaT) exposed to MMW; ii) exploring the incident power density dose-effect on gene expression in HaCaT cell line; and, iii) studying the exposure duration at the new ICNIRP exposure limit for the general population. With the exception of heat effect induced by high power MMW (over 10 mW/cm2), those exposure scenarios have not enabled us to demonstrate important gene expression changes in the different cell populations studied. Very few differentially genes were observed between MMW exposed samples and heat shock control, and most of them were significantly associated with heat shock response that may reflect small differences in the heat generation. Together these results show that acute exposure to MMW has no effects on the transcriptional landscape of human keratinocyte models under athermal conditions.
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Affiliation(s)
- Catherine Martin
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Bertrand Evrard
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Frédéric Percevault
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Kate Ryder
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Thomas Darde
- SciLicium, 10 rue de la Sauvaie, 35200 Rennes, France
| | - Aurélie Lardenois
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Maxim Zhadobov
- Univ Rennes, CNRS, IETR (Institut d'Électronique et des Technologies du Numérique), UMR 6164, F-35000 Rennes, France
| | - Ronan Sauleau
- Univ Rennes, CNRS, IETR (Institut d'Électronique et des Technologies du Numérique), UMR 6164, F-35000 Rennes, France
| | - Frédéric Chalmel
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Yves Le Dréan
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Denis Habauzit
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France; ANSES (French Agency for Food, Environmental and Occupational Health & Safety), Toxicology of Contaminants Unit, Fougères, France.
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Recuero Virto L, Czerwiński M, Froidevaux J. The determinants of legislation for radiofrequency electromagnetic fields (RF-EMFs) with the onset of 5G: An empirical analysis with a worldwide cross-sectional dataset. RISK ANALYSIS : AN OFFICIAL PUBLICATION OF THE SOCIETY FOR RISK ANALYSIS 2024. [PMID: 38556257 DOI: 10.1111/risa.14298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 04/02/2024]
Abstract
The unprecedented exposure of radiofrequency electromagnetic field (RF-EMF) to humans from mobile communications raises serious public concern about the possibility of unexpected adverse health effects and has stimulated authorities to adopt precautionary exposure limits. These limits are distinctly different across countries, and the causes of these differences are unclear from the literature. This article is the first empirical analysis on the determinants of RF-EMF exposure legislation, using a novel cross-sectional database of 164 countries worldwide. The analysis shows that decentralization and mobile competition in countries with low mobile network deployment tend to promote more stringent RF-EMF exposure limits across the dataset with 164 countries. In more decentralized countries, the regions had a greater influence on national legislation and could accommodate local demands with the advent of mobile technology in the 2000s. In contrast, decentralization and mobile competition in countries with high levels of mobile network deployment tend to relax RF-EMF exposure limits in the sample of 61 countries with fifth-generation (5G) technology. Indeed, restrictive RF-EMF exposure limits are constraining 5G deployment in a context of the widespread adoption of mobile-broadband technologies. These results should be useful for policymakers and mobile operators alike to anticipate the outcome of legislation in countries that have yet to introduce 5G technology. The results should also be useful when reviewing policies and strategies for the implementation of the upcoming 6G technology in frequency bands that will be increasingly higher (above 6 GHz up to THz for very local usage), and hence where the health effects on humans are less well studied.
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Affiliation(s)
- Laura Recuero Virto
- Léonard de Vinci Pôle Universitaire, Research Center, Paris La Défense, France
- Economics Departement, École polytechnique, Palaiseau, France
| | - Marek Czerwiński
- Department of Grassland and Natural Landscape Sciences, Poznań University of Life Sciences, ul. Dojazd, Poznań, Poland
| | - Jérémy Froidevaux
- Biological and Environmental Sciences, University of Stirling, Stirling, UK
- Centre d'Ecologie et des Sciences de la Conservation, Museum National d'Histoire Naturelle, Paris, France
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Kumar A, Gaur N, Nanthaamornphong A. Improving the latency for 5G/B5G based smart healthcare connectivity in rural area. Sci Rep 2024; 14:6976. [PMID: 38521842 PMCID: PMC10960841 DOI: 10.1038/s41598-024-57641-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 03/20/2024] [Indexed: 03/25/2024] Open
Abstract
Smart hospitals are poised to greatly enhance life quality by offering persistent health monitoring capabilities. Remote healthcare and surgery, which are highly dependent on low latency, have seen a transformative improvement with the advent of 5G technology. This has facilitated a new breed of healthcare services, including monitoring and remote surgical procedures. The enhanced features of 5G, such as Enhanced Mobile Broadband (eMBB) and Ultra-Reliable Low Latency Communications (URLLC), have enabled the development of advanced healthcare systems. These systems reduce the need for direct patient contact in hospitals, which is especially pertinent as 5G becomes more widespread. This research presents novel hybrid detection algorithms, specifically QR decomposition with M-algorithm maximum likelihood-minimum mean square error (QRM-MLD-MMSE) and QRM-MLD-ZF (zero forcing), for use in Massive MIMO (M-MIMO) technology. These methods aim to decrease the latency in MIMO-based Non-Orthogonal Multiple Access (NOMA) waveforms while ensuring optimal bit error rate (BER) performance. We conducted simulations to evaluate parameters like BER and power spectral density (PSD) over Rician and Rayleigh channels using both the proposed hybrid and standard algorithms. The study concludes that our hybrid algorithms significantly enhance BER and PSD with lower complexity, marking a substantial improvement in 5G communication for smart healthcare applications.
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Affiliation(s)
- Arun Kumar
- Department of Electronics and Communication Engineering, New Horizon College of Engineering, Bengaluru, India
| | - Nishant Gaur
- Department of Physics, JECRC University, Jaipur, India
| | - Aziz Nanthaamornphong
- College of Computing, Prince of Songkla University, Phuket Campus, Phuket, Thailand.
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Kewcharoen J, Shah K, Bhardwaj R, Contractor T, Turagam MK, Mandapati R, Lakkireddy D, Garg J. New-generation electronic appliances and cardiac implantable electronic devices: a systematic literature review of mechanisms and in vivo studies. J Interv Card Electrophysiol 2024:10.1007/s10840-024-01777-z. [PMID: 38443707 DOI: 10.1007/s10840-024-01777-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/27/2024] [Indexed: 03/07/2024]
Abstract
INTRODUCTION Cardiac implantable electronic device (CIED) functions are susceptible to electromagnetic interference (EMI) from electromagnetic fields (EMF). Data on EMI risks from new-generation electronic appliances (EA) are limited. OBJECTIVE We performed a systematic literature review on the mechanisms of EMI, current evidence, and recently published trials evaluating the effect of EMF on CIEDs from electric vehicles (EV), smartphone, and smartwatch technology and summarize its safety data. METHODS Electronic databases, including PubMed and EMBASE, were searched for in vivo studies evaluating EMF strength and incidence between CIEDs and commercial EVs, new-generation smartphones, and new-generation smartwatches. RESULTS A total of ten studies (three on EVs, five on smartphones, one on smartphones, one on smartphones and smartwatches) were included in our systematic review. There was no report of EMI incidence associated with EVs or smartwatches. Magnet-containing smartphones (iPhone 12) can cause EMI when placed directly over CIEDs - thereby triggering the magnet mode; otherwise, no report of EMI was observed with other positions or smartphone models. CONCLUSION Current evidence suggests CIED recipients are safe from general interaction with EVs/HEVs, smartphones, and smartwatches. Strictly, results may only be applied to commercial brands or models tested in the published studies. There is limited data on EMI risk from EVs wireless charging and smartphones with MagSafe technology.
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Affiliation(s)
- Jakrin Kewcharoen
- Division of Cardiology, Cardiac Arrhythmia Service, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA, 92354, USA
| | - Kuldeep Shah
- Division of Cardiology, Cardiac Arrhythmia Service, MercyOne Siouxland Heart and Vascular Center, Sioux City, IA, USA
| | - Rahul Bhardwaj
- Division of Cardiology, Cardiac Arrhythmia Service, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA, 92354, USA
| | - Tahmeed Contractor
- Division of Cardiology, Cardiac Arrhythmia Service, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA, 92354, USA
| | - Mohit K Turagam
- Helmsley Electrophysiology Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ravi Mandapati
- Division of Cardiology, Cardiac Arrhythmia Service, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA, 92354, USA
| | | | - Jalaj Garg
- Division of Cardiology, Cardiac Arrhythmia Service, Loma Linda University Health, 11234 Anderson St, Loma Linda, CA, 92354, USA.
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Onyegbutulem HC, Dogo D, Henry-Onyegbutulem PI, Olorunfemi DS, Schwarz PEH, Bornstein SR. Belief, knowledge, attitude and practices towards COVID-19 amongst residents of Abuja, Nigeria: implications for pandemic preparedness. Pan Afr Med J 2024; 47:98. [PMID: 38799188 PMCID: PMC11126750 DOI: 10.11604/pamj.2024.47.98.34331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 12/26/2023] [Indexed: 05/29/2024] Open
Abstract
Introduction coronavirus disease, (COVID-19), was a pandemic with high global morbidity and mortality, partly due to a lack of preparedness. People´s knowledge, belief, attitude, and perception of disease outbreaks may affect their response, and this may impact their health-related behavior. This study was designed to determine the pattern of belief, knowledge, attitude, and practices (BKAP) of residents of Abuja, Nigeria, towards the COVID-19 pandemic. The outcome of the study may help to make informed decisions on future pandemic preparedness. Methods a cross-sectional study with data collected online about the local perceptions and common concerns, beliefs, misconceptions, attitudes, and conspiracy theories amongst residents of the FCT. A self-reported validated e-questionnaire prepared on Google Forms was used. The obtained data was downloaded on Excel sheet and then exported to SPSS for analysis. Results there were one thousand eight hundred and seventy-three (1,873) respondents, 1017 (54.3%) females and 856 (45.7%) males. Participants were majorly knowledgeable, the majority (31.2%) were in the 41-50 years age group. Surprisingly, about 17% did not know that wearing a face mask could prevent COVID-19. About 25% still met in crowded places, and slightly more than 33% did not wear outdoor masks. The highest knowledge of COVID-19 was found among people in the age range 41-50 years, females, University graduates, married people, and healthcare personnel, particularly doctors. Conclusion our study concludes that the overall population of Abuja had good knowledge and, a positive attitude, with pockets of poor attitudes and bad practices born out of misconceptions and infodemics.
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Affiliation(s)
- Henry Chijioke Onyegbutulem
- Department of Internal Medicine, Faculty of Clinical Sciences, College of Health Sciences, Nile University of Nigeria, Abuja, Nigeria
- Department of Internal Medicine, Nile University Teaching Hospital, Abuja, Nigeria
| | - Dilli Dogo
- Department of Surgery Faculty of Clinical Sciences, College of Health Sciences, Nile University of Nigeria, Abuja, Nigeria
- Department of Surgery, Nile University Teaching Hospital, Abuja, Nigeria
| | - Peace Ijeoma Henry-Onyegbutulem
- Department of Maxillofacial Surgery, Maitama District Hospital, Maitama, Abuja, Nigeria
- Department of Maxillofacial Surgery, Ahmadu Bello University Teaching Hospital (ABUTH) Zaria, Kaduna state, Nigeria
| | - David Samuel Olorunfemi
- Department of Internal Medicine, College of Health Sciences Bingham University, Bingham University Teaching Hospital, Jos Plateau State, Nigeria
| | - Peter Egbert Hermann Schwarz
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Stefan Richard Bornstein
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- School of Cardiovascular and Metabolic Medicine and Sciences, Faculty of Life Sciences and Medicine, King´s College London, London, United Kingdom
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Wang X, Zhou G, Lin J, Qin T, Du J, Guo L, Lai P, Jing Y, Zhang Z, Zhou Y, Ding G. Effects of radiofrequency field from 5G communication on fecal microbiome and metabolome profiles in mice. Sci Rep 2024; 14:3571. [PMID: 38347014 PMCID: PMC10861445 DOI: 10.1038/s41598-024-53842-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 02/06/2024] [Indexed: 02/15/2024] Open
Abstract
With the rapid development of 5G networks, the influence of the radiofrequency field (RF) generated from 5G communication equipment on human health is drawing increasing attention in public. The study aimed at assessing the effects of long-term exposure to 4.9 GHz (one of the working frequencies of 5G communication) RF field on fecal microbiome and metabolome profiles in adult male C57BL/6 mice. The animals were divided into Sham group and radiofrequency group (RF group). For RF group, the mice were whole body exposed to 4.9 GHz RF field for three weeks, 1 h/d, at average power density (PD) of 50 W/m2. After RF exposure, the mice fecal samples were collected to detect gut microorganisms and metabolites by 16S rRNA gene sequencing and LC-MS method, respectively. The results showed that intestinal microbial compositions were altered in RF group, as evidenced by reduced microbial diversity and changed microbial community distribution. Metabolomics profiling identified 258 significantly differentially abundant metabolites in RF group, 57 of which can be classified to Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Besides, functional correlation analysis showed that changes in gut microbiota genera were significantly correlated with changes in fecal metabolites. In summary, the results suggested that altered gut microbiota and metabolic profile are associated with 4.9 GHz radiofrequency exposure.
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Affiliation(s)
- Xing Wang
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Guiqiang Zhou
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
- School of Public Health, Shandong Second Medical University, Weifang, China
| | - Jiajin Lin
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Tongzhou Qin
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Junze Du
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Ling Guo
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Panpan Lai
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Yuntao Jing
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Zhaowen Zhang
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Yan Zhou
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China.
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China.
| | - Guirong Ding
- Department of Radiation Protection Medicine, School of Military Preventive Medicine, Air Force Medical University, Xi'an, China.
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China.
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Weller S, McCredden JE. Understanding the public voices and researchers speaking into the 5G narrative. Front Public Health 2024; 11:1339513. [PMID: 38283297 PMCID: PMC10820716 DOI: 10.3389/fpubh.2023.1339513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 12/26/2023] [Indexed: 01/30/2024] Open
Abstract
The many different voices speaking into the current narrative surrounding the health effects of 5G technologies necessitate an exploration of the background of the various published author-spokespersons and their potential motives. This has been attempted recently by de Vocht and Albers. However, that opinion piece used a narrow investigative lens, resulting in an undermining of both the rationality of the concerned general public and the motives of specific researchers. At the same time, biases, conflicts of interest, and flaws found in "independent" reviews were not considered. To address these oversights, an evidence-based appraisal of public opinion and the scientific caliber of authors involved in the 5G health discussion is warranted. Subsequently, this review article presents an analysis of the available Australian data representing public voices, while also conducting a broader investigation of the level of expertise of recent author-spokespersons based on their experience as scientists, particularly in the area of health effects of radiofrequency electromagnetic fields. This review thus attempts to more clearly illustrate for the reader the caliber and motives of the voices speaking into the 5G narrative. The article concludes with a set of questions that need to be answered to enable scientists to advise policy makers more effectively on matters of 5G and public health.
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Affiliation(s)
- Steven Weller
- Centre for Environmental and Population Health, School of Medicine and Dentistry, Griffith University, Brisbane, QLD, Australia
- Oceania Radiofrequency Scientific Advisory Association Inc. (ORSAA), Scarborough, QLD, Australia
| | - Julie E. McCredden
- Oceania Radiofrequency Scientific Advisory Association Inc. (ORSAA), Scarborough, QLD, Australia
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Qin TZ, Wang X, Du JZ, Lin JJ, Xue YZ, Guo L, Lai PP, Jing YT, Zhang ZW, Ding GR. Effects of radiofrequency field from 5G communications on the spatial memory and emotionality in mice. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:316-327. [PMID: 36413628 DOI: 10.1080/09603123.2022.2149708] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
The rapid development of 5G network technology has gained much popularity as well as concerns about its adverse effects. In this study, we investigated the effects of 4.9 GHz (one of working frequencies of 5G communication) radiofrequency (RF) field on emotional behaviours and spatial memory in adult male mice. Open field test (OFT), tail suspension test (TST) and Y maze were used to evaluate anxiety, depression-like behaviour and spatial memory ability, respectively. It was found that the anxiety-like behaviour and spatial memory ability of mice did not change, but the depression-like behaviour was induced in mice after 4.9 GHz RF exposure. In addition, the number of neurons significantly reduced and the level of pyroptosis obviously increased in amygdala rather than hippocampus. These results suggested that 4.9 GHz RF exposure could induce depression-like behaviour, which might be associated with the neuronal pyroptosis in amygdala.
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Affiliation(s)
- Tong-Zhou Qin
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Xing Wang
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Jun-Ze Du
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Jia-Jin Lin
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Yi-Zhe Xue
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Ling Guo
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Pan-Pan Lai
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Yun-Tao Jing
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Zhao-Wen Zhang
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
| | - Gui-Rong Ding
- Department of Radiation Protection Medicine, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, China
- Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an, China
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Agrawal V, Agrawal S, Bomanwar A, Dubey T, Jaiswal A. Exploring the Risks, Benefits, Advances, and Challenges in Internet Integration in Medicine With the Advent of 5G Technology: A Comprehensive Review. Cureus 2023; 15:e48767. [PMID: 38098915 PMCID: PMC10719543 DOI: 10.7759/cureus.48767] [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: 10/29/2023] [Accepted: 11/13/2023] [Indexed: 12/17/2023] Open
Abstract
The integration of 5G technology in the healthcare sector is poised to bring about transformative changes, offering numerous advantages such as enhanced telemedicine services, expedited data transfer for medical records, improved remote surgery capabilities, real-time monitoring and diagnostics, advancements in wearable medical devices, and the potential for precision medicine. However, this technological shift is not without its concerns, including potential health implications related to 5G radiation exposure, heightened cybersecurity risks for medical devices and data systems, potential system failures due to technology dependence, and privacy issues linked to data breaches in healthcare. We are striking a balance between harnessing these benefits and addressing the associated risks. Achieving this equilibrium requires the establishment of a robust regulatory framework, ongoing research into the health impacts of 5G radiation, the implementation of stringent cybersecurity measures, education and training for healthcare professionals, and the development of ethical standards. The future of 5G in the medical field holds immense promise, but success depends on our ability to navigate this evolving landscape while prioritizing patient safety, privacy, and ethical practice.
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Affiliation(s)
- Varun Agrawal
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Suyash Agrawal
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Aarya Bomanwar
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Tanishq Dubey
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Arpita Jaiswal
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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11
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Mouliou DS. C-Reactive Protein: Pathophysiology, Diagnosis, False Test Results and a Novel Diagnostic Algorithm for Clinicians. Diseases 2023; 11:132. [PMID: 37873776 PMCID: PMC10594506 DOI: 10.3390/diseases11040132] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 10/25/2023] Open
Abstract
The current literature provides a body of evidence on C-Reactive Protein (CRP) and its potential role in inflammation. However, most pieces of evidence are sparse and controversial. This critical state-of-the-art monography provides all the crucial data on the potential biochemical properties of the protein, along with further evidence on its potential pathobiology, both for its pentameric and monomeric forms, including information for its ligands as well as the possible function of autoantibodies against the protein. Furthermore, the current evidence on its potential utility as a biomarker of various diseases is presented, of all cardiovascular, respiratory, hepatobiliary, gastrointestinal, pancreatic, renal, gynecological, andrological, dental, oral, otorhinolaryngological, ophthalmological, dermatological, musculoskeletal, neurological, mental, splenic, thyroid conditions, as well as infections, autoimmune-supposed conditions and neoplasms, including other possible factors that have been linked with elevated concentrations of that protein. Moreover, data on molecular diagnostics on CRP are discussed, and possible etiologies of false test results are highlighted. Additionally, this review evaluates all current pieces of evidence on CRP and systemic inflammation, and highlights future goals. Finally, a novel diagnostic algorithm to carefully assess the CRP level for a precise diagnosis of a medical condition is illustrated.
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Jamal L, Yahia-Cherif L, Hugueville L, Mazet P, Lévêque P, Selmaoui B. Assessment of Electrical Brain Activity of Healthy Volunteers Exposed to 3.5 GHz of 5G Signals within Environmental Levels: A Controlled-Randomised Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6793. [PMID: 37754652 PMCID: PMC10530694 DOI: 10.3390/ijerph20186793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023]
Abstract
Following the recent deployment of fifth-generation (5G) radio frequencies, several questions about their health impacts have been raised. Due to the lack of experimental research on this subject, the current study aimed to investigate the bio-physiological effects of a generated 3.5 GHz frequency. For this purpose, the wake electroencephalograms (EEG) of 34 healthy volunteers were explored during two "real" and "sham" exposure sessions. The electromagnetic fields were antenna-emitted in an electrically shielded room and had an electrical field root-mean-square intensity of 2 V/m, corresponding to the current outdoor exposure levels. The sessions were a maximum of one week apart, and both contained an exposure period of approximately 26 min and were followed by a post-exposure period of 17 min. The power spectral densities (PSDs) of the beta, alpha, theta, and delta bands were then computed and corrected based on an EEG baseline period. This was acquired for 17 min before the subsequent phases were recorded under two separate conditions: eyes open (EO) and eyes closed (EC). A statistical analysis showed an overall non-significant change in the studied brain waves, except for a few electrodes in the alpha, theta, and delta spectra. This change was translated into an increase or decrease in the PSDs, in response to the EO and EC conditions. In conclusion, this studhy showed that 3.5 GHz exposure, within the regulatory levels and exposure parameters used in this protocol, did not affect brain activity in healthy young adults. Moreover, to our knowledge, this was the first laboratory-controlled human EEG study on 5G effects. It attempted to address society's current concern about the impact of 5G exposure on human health at environmental levels.
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Affiliation(s)
- Layla Jamal
- Department of Experimental Toxicology and Modeling (TEAM), Institut National de l’Environnement Industriel et des Risques (INERIS), Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France;
- PériTox Laboratory (UMR_I 01), INERIS/UPJV, INERIS, 60550 Verneuil en Halatte, France
| | - Lydia Yahia-Cherif
- Paris Brain Institute (ICM), Center for NeuroImaging Research (CENIR), Sorbonne University, INSERM U1127, CNRS UMR7225, Pitié-Salpêtrière Hospital, 75013 Paris, France; (L.Y.-C.); (L.H.)
| | - Laurent Hugueville
- Paris Brain Institute (ICM), Center for NeuroImaging Research (CENIR), Sorbonne University, INSERM U1127, CNRS UMR7225, Pitié-Salpêtrière Hospital, 75013 Paris, France; (L.Y.-C.); (L.H.)
| | - Paul Mazet
- Technical Centre for Mechanical Industries (CETIM), 52 Avenue Félix Louat, 60300 Senlis, France;
| | - Philippe Lévêque
- XLIM Research Institute, University of Limoges, UMR CNRS 7252, 123 Avenue Albert Thomas, 87000 Limoges, France;
| | - Brahim Selmaoui
- Department of Experimental Toxicology and Modeling (TEAM), Institut National de l’Environnement Industriel et des Risques (INERIS), Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France;
- PériTox Laboratory (UMR_I 01), INERIS/UPJV, INERIS, 60550 Verneuil en Halatte, France
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Ijima E, Kodera S, Hirata A, Hikage T, Matsumoto A, Ishitake T, Masuda H. Excessive whole-body exposure to 28 GHz quasi-millimeter wave induces thermoregulation accompanied by a change in skin blood flow proportion in rats. Front Public Health 2023; 11:1225896. [PMID: 37732093 PMCID: PMC10507335 DOI: 10.3389/fpubh.2023.1225896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 08/21/2023] [Indexed: 09/22/2023] Open
Abstract
Introduction Limited information is available on the biological effects of whole-body exposure to quasi-millimeter waves (qMMW). The aim of the present study was to determine the intensity of exposure to increase body temperature and investigate whether thermoregulation, including changes in skin blood flow, is induced in rats under whole-body exposure to qMMW. Methods The backs of conscious rats were extensively exposed to 28 GHz qMMW at absorbed power densities of 0, 122, and 237 W/m2 for 40 minutes. Temperature changes in three regions (dorsal and tail skin, and rectum) and blood flow in the dorsal and tail skin were measured simultaneously using fiber-optic probes. Results Intensity-dependent temperature increases were observed in the dorsal skin and the rectum. In addition, skin blood flow was altered in the tail but not in the dorsum, accompanied by an increase in rectal temperature and resulting in an increase in tail skin temperature. Discussion These findings suggest that whole-body exposure to qMMW drives thermoregulation to transport and dissipate heat generated on the exposed body surface. Despite the large differences in size and physiology between humans and rats, our findings may be helpful for discussing the operational health-effect thresholds in the standardization of international exposure guidelines.
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Affiliation(s)
- Etsuko Ijima
- Department of Environmental Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Sachiko Kodera
- Department Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Akimasa Hirata
- Department Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Takashi Hikage
- Faculty of Information Science and Technology, Hokkaido University, Sapporo, Japan
| | - Akiko Matsumoto
- Department of Social and Environmental Medicine, Saga University School of Medicine, Saga, Japan
| | - Tatsuya Ishitake
- Department of Environmental Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Hiroshi Masuda
- Department of Environmental Medicine, Kurume University School of Medicine, Kurume, Japan
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Tan TF, Thirunavukarasu AJ, Jin L, Lim J, Poh S, Teo ZL, Ang M, Chan RVP, Ong J, Turner A, Karlström J, Wong TY, Stern J, Ting DSW. Artificial intelligence and digital health in global eye health: opportunities and challenges. Lancet Glob Health 2023; 11:e1432-e1443. [PMID: 37591589 DOI: 10.1016/s2214-109x(23)00323-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/26/2023] [Accepted: 07/04/2023] [Indexed: 08/19/2023]
Abstract
Global eye health is defined as the degree to which vision, ocular health, and function are maximised worldwide, thereby optimising overall wellbeing and quality of life. Improving eye health is a global priority as a key to unlocking human potential by reducing the morbidity burden of disease, increasing productivity, and supporting access to education. Although extraordinary progress fuelled by global eye health initiatives has been made over the last decade, there remain substantial challenges impeding further progress. The accelerated development of digital health and artificial intelligence (AI) applications provides an opportunity to transform eye health, from facilitating and increasing access to eye care to supporting clinical decision making with an objective, data-driven approach. Here, we explore the opportunities and challenges presented by digital health and AI in global eye health and describe how these technologies could be leveraged to improve global eye health. AI, telehealth, and emerging technologies have great potential, but require specific work to overcome barriers to implementation. We suggest that a global digital eye health task force could facilitate coordination of funding, infrastructural development, and democratisation of AI and digital health to drive progress forwards in this domain.
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Affiliation(s)
- Ting Fang Tan
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Singapore National Eye Centre, Singapore General Hospital, Singapore
| | - Arun J Thirunavukarasu
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Corpus Christi College, University of Cambridge, Cambridge, UK; School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Liyuan Jin
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Duke-NUS Medical School, National University of Singapore, Singapore
| | - Joshua Lim
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Singapore National Eye Centre, Singapore General Hospital, Singapore
| | - Stanley Poh
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Singapore National Eye Centre, Singapore General Hospital, Singapore
| | - Zhen Ling Teo
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Singapore National Eye Centre, Singapore General Hospital, Singapore
| | - Marcus Ang
- Singapore National Eye Centre, Singapore General Hospital, Singapore; Duke-NUS Medical School, National University of Singapore, Singapore
| | - R V Paul Chan
- Illinois Eye and Ear Infirmary, University of Illinois College of Medicine, Urbana-Champaign, IL, USA
| | - Jasmine Ong
- Pharmacy Department, Singapore General Hospital, Singapore
| | - Angus Turner
- Lions Eye Institute, University of Western Australia, Nedlands, WA, Australia
| | - Jonas Karlström
- Duke-NUS Medical School, National University of Singapore, Singapore
| | - Tien Yin Wong
- Singapore National Eye Centre, Singapore General Hospital, Singapore; Tsinghua Medicine, Tsinghua University, Beijing, China
| | - Jude Stern
- The International Agency for the Prevention of Blindness, London, UK
| | - Daniel Shu-Wei Ting
- Artificial Intelligence and Digital Innovation Research Group, Singapore Eye Research Institute, Singapore; Singapore National Eye Centre, Singapore General Hospital, Singapore; Duke-NUS Medical School, National University of Singapore, Singapore.
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15
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Petroulakis N, Mattsson MO, Chatziadam P, Simko M, Gavrielides A, Yiorkas AM, Zeni O, Scarfi MR, Soudah E, Otin R, Schettino F, Migliore MD, Miaoudakis A, Spanoudakis G, Bolte J, Korkmaz E, Theodorou V, Zarogianni E, Lagorio S, Biffoni M, Schiavoni A, Boldi MR, Feldman Y, Bilik I, Laromaine A, Gich M, Spirito M, Ledent M, Segers S, Vargas F, Colussi L, Pruppers M, Baaken D, Bogdanova A. NextGEM: Next-Generation Integrated Sensing and Analytical System for Monitoring and Assessing Radiofrequency Electromagnetic Field Exposure and Health. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:6085. [PMID: 37372672 DOI: 10.3390/ijerph20126085] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/11/2023] [Accepted: 05/18/2023] [Indexed: 06/29/2023]
Abstract
The evolution of emerging technologies that use Radio Frequency Electromagnetic Field (RF-EMF) has increased the interest of the scientific community and society regarding the possible adverse effects on human health and the environment. This article provides NextGEM's vision to assure safety for EU citizens when employing existing and future EMF-based telecommunication technologies. This is accomplished by generating relevant knowledge that ascertains appropriate prevention and control/actuation actions regarding RF-EMF exposure in residential, public, and occupational settings. Fulfilling this vision, NextGEM commits to the need for a healthy living and working environment under safe RF-EMF exposure conditions that can be trusted by people and be in line with the regulations and laws developed by public authorities. NextGEM provides a framework for generating health-relevant scientific knowledge and data on new scenarios of exposure to RF-EMF in multiple frequency bands and developing and validating tools for evidence-based risk assessment. Finally, NextGEM's Innovation and Knowledge Hub (NIKH) will offer a standardized way for European regulatory authorities and the scientific community to store and assess project outcomes and provide access to findable, accessible, interoperable, and reusable (FAIR) data.
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Affiliation(s)
- Nikolaos Petroulakis
- Institute of Computer Science, Foundation for Research and Technology-Hellas (FORTH-ICS), 70013 Heraklion, Greece
| | | | - Panos Chatziadam
- Institute of Computer Science, Foundation for Research and Technology-Hellas (FORTH-ICS), 70013 Heraklion, Greece
| | | | | | | | - Olga Zeni
- Institute for Electromagnetic Sensing of the Environment, Consiglio Nazionale delle Ricerche (CNR-IREA), 80124 Napoli, Italy
| | - Maria Rosaria Scarfi
- Institute for Electromagnetic Sensing of the Environment, Consiglio Nazionale delle Ricerche (CNR-IREA), 80124 Napoli, Italy
| | - Eduardo Soudah
- International Centre for Numerical Methods in Engineering (CIMNE), 08034 Barcelona, Spain
| | - Ruben Otin
- International Centre for Numerical Methods in Engineering (CIMNE), 08034 Barcelona, Spain
| | - Fulvio Schettino
- Department of Electrical and Computer Science Engineering, University of Cassino and Southern Lazio, 03043 Cassino, Italy
| | - Marco Donald Migliore
- Department of Electrical and Computer Science Engineering, University of Cassino and Southern Lazio, 03043 Cassino, Italy
| | | | | | - John Bolte
- Research Group Smart Sensor Systems, The Hague University of Applied Sciences, 2628 AL Delft, The Netherlands
- Centre for Sustainability, Environment and Health, National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands
| | - Erdal Korkmaz
- Research Group Smart Sensor Systems, The Hague University of Applied Sciences, 2628 AL Delft, The Netherlands
| | | | | | | | - Mauro Biffoni
- Italian National Institute of Health, 00161 Rome, Italy
| | | | | | - Yuri Feldman
- Department of Applied Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Igal Bilik
- Department of Applied Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- Department of Electrical and Computer Engineering, Ben Gurion University of the Negev, Beer Sheva 8410501, Israel
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas (ICMAB-CSIC), 08193 Barcelona, Spain
| | - Martí Gich
- Institut de Ciència de Materials de Barcelona, Consejo Superior de Investigaciones Científicas (ICMAB-CSIC), 08193 Barcelona, Spain
| | - Marco Spirito
- Department of Microelectronics, Delft University of Technology, 2628 CN Delft, The Netherlands
| | | | | | | | - Loek Colussi
- Dutch Authority for Digital Infrastructure, 9700 AL Groningen, The Netherlands
| | - Mathieu Pruppers
- Centre for Sustainability, Environment and Health, National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands
| | - Dan Baaken
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Anna Bogdanova
- Institute of Veterinary Physiology, University of Zurich, 8006 Zurich, Switzerland
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16
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Williams CF, Hather C, Conteh JS, Zhang J, Popa RG, Owen AW, Jonas CL, Choi H, Daniel RM, Lloyd D, Porch A, George CH. Non-thermal disruption of β-adrenergic receptor-activated Ca 2+ signalling and apoptosis in human ES-derived cardiomyocytes by microwave electric fields at 2.4 GHz. Biochem Biophys Res Commun 2023; 661:89-98. [PMID: 37087803 DOI: 10.1016/j.bbrc.2023.04.038] [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: 03/30/2023] [Accepted: 04/15/2023] [Indexed: 04/25/2023]
Abstract
The ubiquity of wireless electronic-device connectivity has seen microwaves emerge as one of the fastest growing forms of electromagnetic exposure. A growing evidence-base refutes the claim that wireless technologies pose no risk to human health at current safety levels designed to limit thermal (heating) effects. The potential impact of non-thermal effects of microwave exposure, especially in electrically-excitable tissues (e.g., heart), remains controversial. We exposed human embryonic stem-cell derived cardiomyocytes (CM), under baseline and beta-adrenergic receptor (β-AR)-stimulated conditions, to microwaves at 2.4 GHz, a frequency used extensively in wireless communication (e.g., 4G, Bluetooth™ and WiFi). To control for any effect of sample heating, experiments were done in CM subjected to matched rates of direct heating or CM maintained at 37 °C. Detailed profiling of the temporal and amplitude features of Ca2+ signalling in CM under these experimental conditions was reconciled with the extent and spatial clustering of apoptosis. The data show that exposure of CM to 2.4 GHz EMF eliminated the normal Ca2+ signalling response to β-AR stimulation and provoked spatially-clustered apoptosis. This is first evidence that non-thermal effects of 2.4 GHz microwaves might have profound effects on human CM function, responsiveness to activation, and survival.
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Affiliation(s)
- Catrin F Williams
- School of Engineering, Cardiff University, Wales, UK; School of Biosciences, Cardiff University, Wales, UK
| | | | | | | | | | | | | | - Heungjae Choi
- School of Engineering, Cardiff University, Wales, UK
| | | | - David Lloyd
- School of Engineering, Cardiff University, Wales, UK; School of Biosciences, Cardiff University, Wales, UK
| | - Adrian Porch
- School of Engineering, Cardiff University, Wales, UK.
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17
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Lin JC. Incongruities in recently revised radiofrequency exposure guidelines and standards. ENVIRONMENTAL RESEARCH 2023; 222:115369. [PMID: 36706903 DOI: 10.1016/j.envres.2023.115369] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 12/27/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
The currently promulgated RF exposure guidelines and standards cover the entire range of RF radiation and apply predominantly to restrict RF-induced short-term heating and in guarding against raising tissue temperatures, including the 5G frequencies. There are substantial abnormalities in these putative health safety protection guidelines and standards. Some of the safety limits are irrelevant, debatable, and absent of scientific justification from the standpoint of safety and public health protection. Also, the cellular mobile 5G technology is hailed as a speedier and more secure wireless communication technology than its predecessor systems. The key supporting architecture uses millimeter-wave (mm-wave) and antenna array technology to achieve better directivity, lower latency, and elevated data transmission rates. For radiation protection, it is not obvious whether the health effects of 5G mm-wave radiations would be analogous or not to radiations from previous generations (which was classified as possibly carcinogenic in humans by IARC). The interaction of mm-waves with the structure and function of pertinent cellular elements and cutaneous neuroreceptors in the skin are of special concern. The current scientific database is inadequate at mm wavelengths to render a trustworthy appraisal or to reach a judgment with confidence.
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Affiliation(s)
- James C Lin
- Departments of Electrical and Computer Engineering, Bioengineering, Physiology and Biophysics, University of Illinois Chicago, 851 S. Morgan St. (M/C 154), Chicago, IL, 60607, USA.
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18
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Ramirez-Vazquez R, Escobar I, Vandenbosch GAE, Vargas F, Caceres-Monllor DA, Arribas E. Measurement studies of personal exposure to radiofrequency electromagnetic fields: A systematic review. ENVIRONMENTAL RESEARCH 2023; 218:114979. [PMID: 36460078 DOI: 10.1016/j.envres.2022.114979] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
The last 25 years have seen an increase in the number of radiofrequency sources with the global adoption of smartphones as primary connectivity devices. The objective of this work was to review and evaluate the measured studies of personal exposure to Radiofrequency Electromagnetic Fields (RF-RMF) and meet the basic quality criteria eligible for inclusion in this Review, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, following the eligibility criteria of the PECO (Population, Exposure, Comparator, and Outcome) methodology, and the instrument for critical reading Critical Appraisal Skills Programme Español (CASPe). We systematically reviewed the works published between January 1, 1998, and December 31, 2021, yielding 56 publications. Of the different types of studies in which personal exposure to RF-EMF has been measured with two measurement methodologies can be highlighted: Personal measurements with volunteers and Personal measurements with a trained researcher (touring a specific area, one or several microenvironments, an entire city, walking or in some means of transport). Personal exposimeters were used in 83% of the studies. The lowest mean was measured in Egypt with a value of 0.00100 μW/m2 (1.00 nW/m2) in 2007 and the highest mean was measured in Belgium with a value of 285000 μW/m2 (0.285 W/m2) in 2019. The results of our study confirm that RF-EMF exposure levels are well below the maximum levels established by the ICNIRP guidelines.
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Affiliation(s)
- Raquel Ramirez-Vazquez
- University of Castilla-La Mancha, Applied Physics Department, Faculty of Computer Science Engineering, Avda. de España S/n, University Campus, 02071, Albacete, Spain
| | - Isabel Escobar
- University of Castilla-La Mancha, Applied Physics Department, Faculty of Computer Science Engineering, Avda. de España S/n, University Campus, 02071, Albacete, Spain
| | - Guy A E Vandenbosch
- ESAT-WaveCoRE, Dep. of Electrical Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 10, Box 2444, 3001, Leuven, Belgium
| | | | | | - Enrique Arribas
- University of Castilla-La Mancha, Applied Physics Department, Faculty of Computer Science Engineering, Avda. de España S/n, University Campus, 02071, Albacete, Spain.
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McCredden JE, Weller S, Leach V. The assumption of safety is being used to justify the rollout of 5G technologies. Front Public Health 2023; 11:1058454. [PMID: 36815158 PMCID: PMC9940636 DOI: 10.3389/fpubh.2023.1058454] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 01/03/2023] [Indexed: 01/27/2023] Open
Affiliation(s)
- Julie E. McCredden
- Oceania Radiofrequency Scientific Advisory Association Inc. (ORSAA), Scarborough, QLD, Australia
| | - Steven Weller
- Oceania Radiofrequency Scientific Advisory Association Inc. (ORSAA), Scarborough, QLD, Australia,Centre for Environmental and Population Health, School of Medicine and Dentistry, Griffith University, Brisbane, QLD, Australia
| | - Victor Leach
- Oceania Radiofrequency Scientific Advisory Association Inc. (ORSAA), Scarborough, QLD, Australia,*Correspondence: Victor Leach ✉
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20
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Playing with Biophysics: How a Symphony of Different Electromagnetic Fields Acts to Reduce the Inflammation in Diabetic Derived Cells. Int J Mol Sci 2023; 24:ijms24021754. [PMID: 36675268 PMCID: PMC9861282 DOI: 10.3390/ijms24021754] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/02/2022] [Accepted: 12/22/2022] [Indexed: 01/18/2023] Open
Abstract
Several factors, such as ischemia, infection and skin injury impair the wound healing process. One common pathway in all these processes is related to the reactive oxygen species (ROS), whose production plays a vital role in wound healing. In this view, several strategies have been developed to stimulate the activation of the antioxidative system, thereby reducing the damage related to oxidative stress and improving wound healing. For this purpose, complex magnetic fields (CMFs) are used in this work on fibroblast and monocyte cultures derived from diabetic patients in order to evaluate their influence on the ROS production and related wound healing properties. Biocompatibility, cytotoxicity, mitochondrial ROS production and gene expression have been evaluated. The results confirm the complete biocompatibility of the treatment and the lack of side effects on cell physiology following the ISO standard indication. Moreover, the results confirm that the CMF treatment induced a reduction in the ROS production, an increase in the macrophage M2 anti-inflammatory phenotype through the activation of miRNA 5591, a reduction in inflammatory cytokines, such as interleukin-1 (IL-1) and IL-6, an increase in anti-inflammatory ones, such as IL-10 and IL-12 and an increase in the markers related to improved wound healing such as collagen type I and integrins. In conclusion, our findings encourage the use of CMFs for the treatment of diabetic foot.
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McCredden JE, Cook N, Weller S, Leach V. Wireless technology is an environmental stressor requiring new understanding and approaches in health care. Front Public Health 2022; 10:986315. [PMID: 36605238 PMCID: PMC9809975 DOI: 10.3389/fpubh.2022.986315] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
Electromagnetic signals from everyday wireless technologies are an ever-present environmental stressor, affecting biological systems. In this article, we substantiate this statement based on the weight of evidence from papers collated within the ORSAA database (ODEB), focusing on the biological and health effects of electromagnetic fields and radiation. More specifically, the experiments investigating exposures from real-world devices and the epidemiology studies examining the effects of living near mobile phone base stations were extracted from ODEB and the number of papers showing effects was compared with the number showing no effects. The results showed that two-thirds of the experimental and epidemiological papers found significant biological effects. The breadth of biological and health categories where effects have been found was subsequently explored, revealing hundreds of papers showing fundamental biological processes that are impacted, such as protein damage, biochemical changes and oxidative stress. This understanding is targeted toward health professionals and policy makers who have not been exposed to this issue during training. To inform this readership, some of the major biological effect categories and plausible mechanisms of action from the reviewed literature are described. Also presented are a set of best practice guidelines for treating patients affected by electromagnetic exposures and for using technology safely in health care settings. In conclusion, there is an extensive evidence base revealing that significant stress to human biological systems is being imposed by exposure to everyday wireless communication devices and supporting infrastructure. This evidence is compelling enough to warrant an update in medical education and practice.
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Affiliation(s)
- Julie E. McCredden
- Oceania Radiofrequency Scientific Advisory Association (ORSAA), Brisbane, QLD, Australia
| | - Naomi Cook
- Oceania Radiofrequency Scientific Advisory Association (ORSAA), Brisbane, QLD, Australia
| | - Steven Weller
- Oceania Radiofrequency Scientific Advisory Association (ORSAA), Brisbane, QLD, Australia
- Centre for Environmental and Population Health, School of Medicine and Dentistry, Griffith University, Brisbane, QLD, Australia
| | - Victor Leach
- Oceania Radiofrequency Scientific Advisory Association (ORSAA), Brisbane, QLD, Australia
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de Vocht F, Albers P. The population health effects from 5G: Controlling the narrative. Front Public Health 2022; 10:1082031. [PMID: 36600933 PMCID: PMC9806221 DOI: 10.3389/fpubh.2022.1082031] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Frank de Vocht
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
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Levitt BB, Lai HC, Manville AM. Effects of non-ionizing electromagnetic fields on flora and fauna, Part 3. Exposure standards, public policy, laws, and future directions. REVIEWS ON ENVIRONMENTAL HEALTH 2022; 37:531-558. [PMID: 34563106 DOI: 10.1515/reveh-2021-0083] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Due to the continuous rising ambient levels of nonionizing electromagnetic fields (EMFs) used in modern societies-primarily from wireless technologies-that have now become a ubiquitous biologically active environmental pollutant, a new vision on how to regulate such exposures for non-human species at the ecosystem level is needed. Government standards adopted for human exposures are examined for applicability to wildlife. Existing environmental laws, such as the National Environmental Policy Act and the Migratory Bird Treaty Act in the U.S. and others used in Canada and throughout Europe, should be strengthened and enforced. New laws should be written to accommodate the ever-increasing EMF exposures. Radiofrequency radiation exposure standards that have been adopted by worldwide agencies and governments warrant more stringent controls given the new and unusual signaling characteristics used in 5G technology. No such standards take wildlife into consideration. Many species of flora and fauna, because of distinctive physiologies, have been found sensitive to exogenous EMF in ways that surpass human reactivity. Such exposures may now be capable of affecting endogenous bioelectric states in some species. Numerous studies across all frequencies and taxa indicate that low-level EMF exposures have numerous adverse effects, including on orientation, migration, food finding, reproduction, mating, nest and den building, territorial maintenance, defense, vitality, longevity, and survivorship. Cyto- and geno-toxic effects have long been observed. It is time to recognize ambient EMF as a novel form of pollution and develop rules at regulatory agencies that designate air as 'habitat' so EMF can be regulated like other pollutants. Wildlife loss is often unseen and undocumented until tipping points are reached. A robust dialog regarding technology's high-impact role in the nascent field of electroecology needs to commence. Long-term chronic low-level EMF exposure standards should be set accordingly for wildlife, including, but not limited to, the redesign of wireless devices, as well as infrastructure, in order to reduce the rising ambient levels (explored in Part 1). Possible environmental approaches are discussed. This is Part 3 of a three-part series.
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Affiliation(s)
| | - Henry C Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Albert M Manville
- Advanced Academic Programs, Krieger School of Arts and Sciences, Environmental Sciences and Policy, Johns Hopkins University, Baltimore, USA
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24
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Leszczynski D. Call for consensus debate on mobile phone radiation and health: Are current safety guidelines sufficient to protect everyone's health? Front Public Health 2022; 10:1085821. [PMID: 36589931 PMCID: PMC9799717 DOI: 10.3389/fpubh.2022.1085821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/23/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Dariusz Leszczynski
- Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland,Frontiers, Lausanne, Switzerland,*Correspondence: Dariusz Leszczynski
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25
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Minasbekyan LA, Nerkararyan AV. Contribution of Nuclear Membrane Phospholipids to the Formation of Electrokinetic Potential. Biophysics (Nagoya-shi) 2022. [DOI: 10.1134/s0006350922060148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
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Status of the Neuroendocrine System in Animals Chronically Exposed to Electromagnetic Fields of 5G Mobile Network Base Stations. Bull Exp Biol Med 2022; 174:277-279. [PMID: 36598666 DOI: 10.1007/s10517-023-05689-2] [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: 07/01/2022] [Indexed: 01/05/2023]
Abstract
We studied the biological effect of chronic exposure to multifrequency electromagnetic fields simulating the effects of 5G NR/IMT-2020 mobile communication systems. Male Wistar rats were exposed to 24-h radiation (250 μW/cm2) for 4 months. The exploratory activity of the animals and blood concentrations of ACTH and corticosterone were evaluated at the end of each month of exposure and 1 month after exposure. The results suggest that exposure to multifrequency electromagnetic field simulating the effects of 5G systems affected functional activity of the hypothalamus-pituitary-adrenal axis and was stressful in nature.
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Nguyen TX, Ran AR, Hu X, Yang D, Jiang M, Dou Q, Cheung CY. Federated Learning in Ocular Imaging: Current Progress and Future Direction. Diagnostics (Basel) 2022; 12:2835. [PMID: 36428895 PMCID: PMC9689273 DOI: 10.3390/diagnostics12112835] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Advances in artificial intelligence deep learning (DL) have made tremendous impacts on the field of ocular imaging over the last few years. Specifically, DL has been utilised to detect and classify various ocular diseases on retinal photographs, optical coherence tomography (OCT) images, and OCT-angiography images. In order to achieve good robustness and generalisability of model performance, DL training strategies traditionally require extensive and diverse training datasets from various sites to be transferred and pooled into a "centralised location". However, such a data transferring process could raise practical concerns related to data security and patient privacy. Federated learning (FL) is a distributed collaborative learning paradigm which enables the coordination of multiple collaborators without the need for sharing confidential data. This distributed training approach has great potential to ensure data privacy among different institutions and reduce the potential risk of data leakage from data pooling or centralisation. This review article aims to introduce the concept of FL, provide current evidence of FL in ocular imaging, and discuss potential challenges as well as future applications.
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Affiliation(s)
- Truong X. Nguyen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - An Ran Ran
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaoyan Hu
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Dawei Yang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Meirui Jiang
- Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Qi Dou
- Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Carol Y. Cheung
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
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Huang J, Li X, Yan T, Wen L, Pan L, Yang Z. The Reliability and Acceptability of RDx-Based Tele-Controlled Subjective Refraction Compared with Traditional Subjective Refraction. Transl Vis Sci Technol 2022; 11:16. [PMID: 36394842 PMCID: PMC9684619 DOI: 10.1167/tvst.11.11.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Purpose The purpose of this study was to compare the reliability and acceptability of tele-controlled subjective refraction supported by RDx, a new technique that involves optical software designed for controlling phoropters remotely, to traditional subjective refraction. Methods Sixty-five participants underwent tele-controlled subjective refraction and traditional subjective refraction randomly and nine of them underwent the second tele-controlled subjective refraction measurement on the same day. After their examinations, we distributed a validated satisfaction questionnaire to each participant. The elapsed time taken for refraction, sphere (S), cylinder (C), spherical equivalent (SE), vertical and oblique cylindrical vectors (J0 and J45), and best corrected visual acuity (BCVA) were compared. Age and refractive error type were included as covariates. Bland-Altman analysis was used to assess the agreement between both methods of refraction. Results The mean age was 20.5 ± 5.9 years for all participants (aged 9 to 40 years); 57% were female participants. The repeatability analysis of tele-controlled method showed no significant differences for all parameters (P > 0.05). We found no statistical differences (P > 0.05) between tele-controlled subjective refraction and traditional subjective refraction for all parameters in either group. The mean difference and 95% limits of agreement for SE, J0, and J45 were −0.03 ± 0.36 diopters (D), −0.00 ± 0.57 D, and −0.01 ± 0.79 D, respectively. The tele-controlled method took more time to perform than the traditional one (P < 0.05). Completed questionnaires were returned by 55 participants (85%), and they showed high satisfaction and acceptance of the tele-controlled method (98%). Conclusions Tele-controlled subjective refraction results agreed with traditional subjective refraction for all refraction components except for cylinder vectors. In addition, the broad acceptability of tele-controlled subjective refraction means practicability in clinical practice. Translation Relevance The RDx-based tele-controlled method can provide an alternative to subjective refraction, especially in areas that lack experienced optometrists.
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Affiliation(s)
- Jie Huang
- Aier School of Ophthalmology, Central South University, Changsha, China
- Hunan Province Optometry Engineering Technology Research Center, Changsha, China
| | - Xiaoning Li
- Aier School of Optometry and Vision Science, Hubei University of Science and Technology, Xianning, China
- Changsha Aier Eye Hospital, Changsha, China
| | - Tao Yan
- Nanchang Aier Eye Hospital, Nanchang, China
| | - Longbo Wen
- Hunan Province Optometry Engineering Technology Research Center, Changsha, China
| | - Lun Pan
- Hunan Province Optometry Engineering Technology Research Center, Changsha, China
| | - Zhikuan Yang
- Aier School of Ophthalmology, Central South University, Changsha, China
- Hunan Province Optometry Engineering Technology Research Center, Changsha, China
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29
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Bhattacharya S. The Impact of 5G Technologies on Healthcare. Indian J Surg 2022. [DOI: 10.1007/s12262-022-03514-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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30
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Moglia A, Georgiou K, Marinov B, Georgiou E, Berchiolli RN, Satava RM, Cuschieri A. 5G in Healthcare: from COVID-19 to Future Challenges. IEEE J Biomed Health Inform 2022; 26:4187-4196. [PMID: 35675255 DOI: 10.1109/jbhi.2022.3181205] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Worldwide up to May 2022 there have been 515 million cases of COVID-19 infection and over 6 million deaths. The World Health Organization estimated that 115,000 healthcare workers died from COVID-19 from January 2020 to May 2021. This toll on human lives prompted this review on 5G based networking primarily on major components of healthcare delivery: diagnosis, patient monitoring, contact tracing, diagnostic imaging tests, vaccines distribution, emergency medical services, telesurgery and robot-assisted tele-ultrasound. The positive impact of 5G as core technology for COVID-19 applications enabled exchange of huge data sets in fangcang (cabin) hospitals and real-time contact tracing, while the low latency enhanced robot-assisted tele-ultrasound, and telementoring during ophthalmic surgery. In other instances, 5G provided a supportive technology for applications related to COVID-19, e.g., patient monitoring. The feasibility of 5G telesurgery was proven, albeit by a few studies on real patients, in very low samples size in most instances. The important future applications of 5G in healthcare include surveillance of elderly people, the immunosuppressed, and nano- oncology for Internet of Nano Things (IoNT). Issues remain and these require resolution before routine clinical adoption. These include infrastructure and coverage; health risks; security and privacy protection of patients' data; 5G implementation with artificial intelligence, blockchain, and IoT; validation, patient acceptance and training of end-users on these technologies.
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31
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Electromagnetic Interference Shielding with Electrospun Nanofiber Mats—A Review of Production, Physical Properties and Performance. FIBERS 2022. [DOI: 10.3390/fib10060047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
With a steadily increasing number of machines and devices producing electromagnetic radiation, especially, sensitive instruments as well as humans need to be shielded from electromagnetic interference (EMI). Since ideal shielding materials should be lightweight, flexible, drapable, thin and inexpensive, textile fabrics belong to the often-investigated candidates to meet these expectations. Especially, electrospun nanofiber mats are of significant interest since they can not only be produced relatively easily and cost efficiently, but they also enable the embedding of functional nanoparticles in addition to thermal or chemical post-treatments to reach the desired physical properties. This paper gives an overview of recent advances in nanofiber mats for EMI shielding, discussing their production, physical properties and typical characterization techniques.
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32
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Lawler NB, Evans CW, Romanenko S, Chaudhari N, Fear M, Wood F, Smith NM, Wallace VP, Swaminathan Iyer K. Millimeter waves alter DNA secondary structures and modulate the transcriptome in human fibroblasts. BIOMEDICAL OPTICS EXPRESS 2022; 13:3131-3144. [PMID: 35774325 PMCID: PMC9203081 DOI: 10.1364/boe.458478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/14/2022] [Accepted: 04/14/2022] [Indexed: 05/08/2023]
Abstract
As millimetre wave (MMW) frequencies of the electromagnetic spectrum are increasingly adopted in modern technologies such as mobile communications and networking, characterising the biological effects is critical in determining safe exposure levels. We study the exposure of primary human dermal fibroblasts to MMWs, finding MMWs trigger genomic and transcriptomic alterations. In particular, repeated 60 GHz, 2.6 mW cm-2, 46.8 J cm-2 d-1 MMW doses induce a unique physiological response after 2 and 4 days exposure. We show that high dose MMWs induce simultaneous non-thermal alterations to the transcriptome and DNA structural dynamics, including formation of G-quadruplex and i-motif secondary structures, but not DNA damage.
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Affiliation(s)
- Nicholas B Lawler
- Department of Physics, The University of Western Australia, Perth, WA 6009, Australia
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Cameron W Evans
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Sergii Romanenko
- Department of Sensory Signaling, O.O. Bogomolets Institute of Physiology, National Academy of Sciences of Ukraine, Kyiv, 01601, Ukraine
| | - Nutan Chaudhari
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Mark Fear
- Burn Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, WA 6009, Australia
| | - Fiona Wood
- Fiona Stanley and Princess Margaret Hospitals, Burns Service of Western Australia, Perth, WA, Australia
| | - Nicole M Smith
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Vincent P Wallace
- Department of Physics, The University of Western Australia, Perth, WA 6009, Australia
| | - K Swaminathan Iyer
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
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Biological Effects of Non-Ionizing Electromagnetic Fields at 27 GHz on Sperm Quality of Mytilus galloprovincialis. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10040521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Recently, an increasing use of wireless internet technologies has been demonstrated. The devices which use these technologies emit in new spectral regions an electromagnetic radiation (EMF) which could interact with the male reproductive system. The aim of this study was to investigate in vitro the effect of electromagnetic fields at 27 GHz on sperm quality in Mytilus galloprovincialis. Sperm samples were collected from sexually mature males of M. galloprovincialis and placed in seawater. Once we evaluated the number and quality of spermatozoa, sperm cells were exposed to electromagnetic fields radiated by a pyramidal horn antenna. The effect of exposure was evaluated after 10, 20, 30, 40 and 60 min by a light microscope and using an Eosin test. Ten replications were performed for each time series, and statistical analysis was carried out by t-test. Sperm motility decreased after 10 min of exposure, and after 30 min most of the spermatozoa were immobile and not vital. This study provides useful data on the potential ecological impact of the high-band 5G on animal fertility, the effect of which is currently under investigation.
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Levitt BB, Lai HC, Manville AM. Effects of non-ionizing electromagnetic fields on flora and fauna, part 1. Rising ambient EMF levels in the environment. REVIEWS ON ENVIRONMENTAL HEALTH 2022; 37:81-122. [PMID: 34047144 DOI: 10.1515/reveh-2021-0026] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 03/20/2021] [Indexed: 06/12/2023]
Abstract
Ambient levels of electromagnetic fields (EMF) have risen sharply in the last 80 years, creating a novel energetic exposure that previously did not exist. Most recent decades have seen exponential increases in nearly all environments, including rural/remote areas and lower atmospheric regions. Because of unique physiologies, some species of flora and fauna are sensitive to exogenous EMF in ways that may surpass human reactivity. There is limited, but comprehensive, baseline data in the U.S. from the 1980s against which to compare significant new surveys from different countries. This now provides broader and more precise data on potential transient and chronic exposures to wildlife and habitats. Biological effects have been seen broadly across all taxa and frequencies at vanishingly low intensities comparable to today's ambient exposures. Broad wildlife effects have been seen on orientation and migration, food finding, reproduction, mating, nest and den building, territorial maintenance and defense, and longevity and survivorship. Cyto- and geno-toxic effects have been observed. The above issues are explored in three consecutive parts: Part 1 questions today's ambient EMF capabilities to adversely affect wildlife, with more urgency regarding 5G technologies. Part 2 explores natural and man-made fields, animal magnetoreception mechanisms, and pertinent studies to all wildlife kingdoms. Part 3 examines current exposure standards, applicable laws, and future directions. It is time to recognize ambient EMF as a novel form of pollution and develop rules at regulatory agencies that designate air as 'habitat' so EMF can be regulated like other pollutants. Wildlife loss is often unseen and undocumented until tipping points are reached. Long-term chronic low-level EMF exposure standards, which do not now exist, should be set accordingly for wildlife, and environmental laws should be strictly enforced.
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Affiliation(s)
- B Blake Levitt
- National Association of Science Writers, Berkeley, CA, USA
| | - Henry C Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Albert M Manville
- Advanced Academic Programs, Krieger School of Arts and Sciences, Environmental Sciences and Policy, Johns Hopkins University, Washington DC Campus, USA
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Jargin SV. 5G wireless communication and health effects: a commentary. REVIEWS ON ENVIRONMENTAL HEALTH 2022; 37:153-154. [PMID: 33743190 DOI: 10.1515/reveh-2021-0031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Affiliation(s)
- Sergei V Jargin
- Department of Pathology, Faculty of Medicine, Peoples' Friendship University of Russia, 117198 Moscow, Russian Federation
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36
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Vanneman M, Kothari P, Bodmer NJ, Convissar D, Desai GA, Kumar N, Iyer MH, Neuburger PJ, Essandoh MK, Cronin B, Dalia AA. The Year in Electrophysiology: Selected Highlights from 2021. J Cardiothorac Vasc Anesth 2022; 36:1526-1539. [DOI: 10.1053/j.jvca.2022.01.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 11/11/2022]
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Abstract
This study was developed under the scope of a Portuguese project focused on the entrepreneur’s perspective and perception on the internationalization process of his company: more specifically, about the factors that enhanced the company entry into foreign markets as well as the constraints found in this process. This work focuses on the importance of using digital transformation to integrate technological tools in international business practice and strategy and the obstacles encountered with introducing these new technologies. This study aims to determine the relationships between technology categories and obstacles. The final goal is to assess the impact of these characteristics of the companies by the sector of economic activity, size, and percentage of profits resulting from international expansion. A questionnaire was designed and sent by email to 8183 companies from the AICEP database, distributed by three main activity sectors. A total of 310 valid answers were gathered from the Portuguese internationalized companies. The research limitations are related to the reduced number of interviews. These interviews showed that managers were not aware of the concept of digital transformation and misunderstood the use of digital technologies in the internationalization process of the business. This limitation can add some bias to the qualitative results. In addition to these limitations, the number of responses per sector was also not homogeneous. The practical implications of this study are that managers and top-level executives can use that to better understand how companies could use digital tools and what obstacles they should avoid when they want to internationalize their business. This paper is one of the first research contributions to analyze the impact of digital transformation in the internalization of Portuguese companies.
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Hinrikus H, Koppel T, Lass J, Orru H, Roosipuu P, Bachmann M. Possible health effects on the human brain by various generations of mobile telecommunication: a review based estimation of 5G impact. Int J Radiat Biol 2022; 98:1210-1221. [PMID: 34995145 DOI: 10.1080/09553002.2022.2026516] [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: 10/19/2022]
Abstract
PURPOSE The deployment of new 5G NR technology has significantly raised public concerns in possible negative effects on human health by radiofrequency electromagnetic fields (RF EMF). The current review is aimed to clarify the differences between possible health effects caused by the various generations of telecommunication technology, especially discussing and projecting possible health effects by 5G. The review of experimental studies on the human brain over the last fifteen years and the discussion on physical mechanisms and factors determining the dependence of the RF EMF effects on frequency and signal structure have been performed to discover and explain the possible distinctions between health effects by different telecommunication generations. CONCLUSIONS The human experimental studies on RF EMF effects on the human brain by 2G, 3G and 4G at frequencies from 450 to 2500 MHz were available for analyses. The search for publications indicated no human experimental studies by 5G nor at the RF EMF frequencies higher than 2500 MHz. The results of the current review demonstrate no consistent relationship between the character of RF EMF effects and parameters of exposure by different generations (2G, 3G, 4G) of telecommunication technology. At the RF EMF frequencies lower than 10 GHz, the impact of 5G NR FR1 should have no principal differences compared to the previous generations. The radio frequencies used in 5G are even higher and the penetration depths of the fields are smaller, therefore the effect is rather lower than at previous generations. At the RF EMF frequencies higher than 10 GHz, the mechanism of the effects might differ and the impact of 5G NR FR2 becomes unpredictable. Existing knowledge about the mechanism of RF EMF effects at millimeter waves lacks sufficient experimental data and theoretical models for reliable conclusions. The insufficient knowledge about the possible health effects at millimeter waves and the lack of in vivo experimental studies on 5G NR underline an urgent need for the theoretical and experimental investigations of health effects by 5G NR, especially by 5G NR FR2.
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Affiliation(s)
- Hiie Hinrikus
- Department of Health Technologies, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia
| | - Tarmo Koppel
- Department of Business Administration, School of Business and Governance, Tallinn University of Technology, Tallinn, Estonia
| | - Jaanus Lass
- Department of Health Technologies, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia
| | - Hans Orru
- Department of Public Health, Institute of Family Medicine and Public Health, Faculty of Medicine, University of Tartu, Tartu, Estonia
| | - Priit Roosipuu
- Thomas Johann Seebeck Department of Electronics, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia
| | - Maie Bachmann
- Department of Health Technologies, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia
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Methodology of Studying Effects of Mobile Phone Radiation on Organisms: Technical Aspects. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182312642. [PMID: 34886365 PMCID: PMC8656635 DOI: 10.3390/ijerph182312642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/23/2022]
Abstract
The negative influence of non-ionizing electromagnetic radiation on organisms, including humans, has been discussed widely in recent years. This paper deals with the methodology of examining possible harmful effects of mobile phone radiation, focusing on in vivo and in vitro laboratory methods of investigation and evaluation and their main problems and difficulties. Basic experimental parameters are summarized and discussed, and recent large studies are also mentioned. For the laboratory experiments, accurate setting and description of dosimetry are essential; therefore, we give recommendations for the technical parameters of the experiments, especially for a well-defined source of radiation by Software Defined Radio.
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de Vocht F. Interpretation of Timetrends (1996-2017) of the Incidence of Selected Cancers in England in Relation to Mobile Phone Use as a Possible Risk Factor. Bioelectromagnetics 2021; 42:609-615. [PMID: 34633685 DOI: 10.1002/bem.22375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/14/2021] [Accepted: 09/25/2021] [Indexed: 01/02/2023]
Abstract
Radiofrequency (RF) radiation from mobile phones has been classified as possibly carcinogenic to humans (2b) by IARC. However, to date, the discussion on whether mobile phone use is a cancer risk factor has not been solved. In this context of continuing uncertainty, it is important to continue to monitor cancer incidence trends. Annual incidence rates and directly age-standardized rates of selected cancers by sex and 5-year age groups for 1996 to 2017 for England were obtained from the UK Office for National Statistics. Interpretation in light of mobile phone use as a contributing risk factor was conducted for cancers of the brain, parotid gland, thyroid, and colorectal cancer, which have all been hypothesized to be associated with RF exposure. Brain and parotid gland cancers were updated by an additional 10 years following a previous publication, and continue to provide little evidence of an association with mobile phone use. Although mobile phone use as a potential risk factor contributing to increased incidence of colorectal or thyroid cancer could not be excluded based on these ecological data, it is implausible that it is an important risk factor for either. In the absence of clarity from epidemiological studies, it remains important to continue to monitor trends. However, for the time being, and in agreement with data from other countries, there is little evidence of an association between mobile phone use and brain or parotid gland cancer, while the hypotheses of associations with thyroid or colorectal cancer are similarly weak. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
- Frank de Vocht
- Population Health Sciences, University of Bristol, Bristol, UK
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41
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Schmid G, Hirtl R, Gronau I, Meyer V, Drees K, Lerchl A. Design and Dosimetric Characterization of a Broadband Exposure Facility for In Vitro Experiments in the Frequency Range 18-40.5 GHz. Bioelectromagnetics 2021; 43:25-39. [PMID: 34622469 DOI: 10.1002/bem.22376] [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: 06/15/2021] [Revised: 09/16/2021] [Accepted: 09/28/2021] [Indexed: 11/08/2022]
Abstract
A novel exposure facility for exposing cell monolayers to centimeter and millimeter waves (18-40.5 GHz) used by future 5G mobile communication technology and similar applications has been developed. A detailed dosimetric characterization of the apparatus for frequencies of 27 and 40.5 GHz and 60 mm petri dishes, used in a presently ongoing study on human dermal fibroblasts and keratinocytes, was carried out. The exposure facility enables a well-defined, randomized, and blinded application of sham exposure and exposure with selectable values of incident power flux density, and additionally provides the possibility of continuous monitoring of the sample temperature during exposure while it does not require significant deviations from routine in vitro handling procedures, i.e. petri dishes are not required to be placed inside waveguides or TEM cells. Mean specific absorption rate (SAR) values inside the cell monolayer of 115 W/kg (27 GHz) and 160 W/kg (40.5 GHz) per watt antenna input power and corresponding transmitted power density (St ) values at the bottom of the cell monolayer of 65 W/m2 (27 GHz) and 70 W/m2 (40.5 GHz) per watt antenna input power can be achieved, respectively. For reasonable amounts of harvested cells (80% of petri dish bottom area), the variation (max/min) of SAR and St over the cell monolayer remains below 3.7 dB (27 GHz) and 3.0 dB (40.5 GHz), respectively. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
| | - Rene Hirtl
- Seibersdorf Laboratories, Seibersdorf, Austria
| | - Isabel Gronau
- Department of Life Sciences & Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Vivian Meyer
- Department of Life Sciences & Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Karen Drees
- Department of Life Sciences & Chemistry, Jacobs University Bremen, Bremen, Germany
| | - Alexander Lerchl
- Department of Life Sciences & Chemistry, Jacobs University Bremen, Bremen, Germany
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Abstract
Background: Most healthcare providers are unaware of the extraordinary opportunities for implementation in healthcare which can be enabled by 5G wireless networks. 5G created enormous opportunities for a myriad of new technologies, resulting in an integrated through 5G ‘ecosystem’. Although the new opportunities in healthcare are immense, medicine is slow to change, as manifest by the paucity of new, innovative applications based upon this ecosystem. Thus, emerges the need to “avoid technology surprise” - both laparoscopic and robotic assisted minimally invasive surgery were delayed for years because the surgical community was either unaware or unaccepting of a new technology. Database: PubMed (Medline) and Scopus (Elsevier) databases were searched and all published studies regarding clinical applications of 5G were retrieved. From a total of 40 articles, 13 were finally included in our review. Discussion: The important transformational properties of 5G communications and other innovative technologies are described and compared to healthcare needs, looking for opportunities, limitations, and challenges to implementation of 5G and the ecosystem it has spawned. Furthermore, the needs in the clinical applications, education and research in medicine and surgery, in addition to the administrative infrastructure are addressed. Additionally, we explore the nontechnical challenges, that either support or oppose this new healthcare renovation. Based upon proven advantages of these innovative technologies, current scientific evidence is analyzed for future trends for the transformation of healthcare. By providing awareness of these opportunities and their advantages for patients, it will be possible to decrease the prolonged timeframe for acceptance and implementation for patients.
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Affiliation(s)
- Konstantinos E Georgiou
- 1 Department of Propaedeutic Surgery, Hippokration General Hospital of Athens, Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Georgiou
- Medical Physics Laboratory Simulation Center (MPLSC), Athens Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Richard M Satava
- Professor Emeritus of Surgery, University of Washington, Seattle, WA
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Vijayalaxmi, Foster KR. Improving the Quality of Radiofrequency Bioeffects Research: The Need for a Carrot and a Stick. Radiat Res 2021; 196:417-422. [PMID: 34270779 DOI: 10.1667/rade-21-00079.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/21/2021] [Indexed: 11/03/2022]
Abstract
This commentary considers research needs for radiofrequency (RF) energy above 6 GHz, including in the "high band" of 5G New Radio (NR) communications systems that exists just beneath the mm-wave band (30-300 GHz). As of late 2020, approximately 100 RF bioeffects studies have been published involving exposures above 6 GHz, encompassing a wide range of exposure levels and frequencies. A majority of these studies report statistically significant effects of exposure, many at exposures within international safety limits. This commentary examines 31 genetic damage studies involving RF exposures above 6 GHz in the context of two sets of quality-assessment criteria: 1. "Risk of bias" (RoB) criteria used for systematic reviews of health-related studies; and 2. a broader set of criteria for research quality from a different scholarly approach (metascience). The 31 studies report several statistically significant effects of exposure on different markers for genetic damage. These effects, if real, would have great potential significance for carcinogen risk assessment. However, the studies as a group have significant technical weaknesses, including small size, failure to meet multiple RoB criteria, naïve use of statistics, and lack of prespecified hypotheses and methods of analysis, all of which increase the chances of false discovery. Here we propose a "carrot" (adequate funding to support high-quality research) and a "stick" (more stringent review of bioeffects manuscripts, including explicit instructions to reviewers to assess study quality) approach to increase the reliability of RF bioeffects studies to facilitate health agency reviews of this socially controversial topic.
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Affiliation(s)
- Vijayalaxmi
- Department of Radiology, University of Texas Health Science Center, San Antonio, Texas 78229
| | - Kenneth R Foster
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19106
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Zhang J, Zhang J, Shuai X, Zhao R, Guo T, Li K, Wang D, Ma C, Li J, Du J. Design and Synthesis Strategies: 2D Materials for Electromagnetic Shielding/Absorbing. Chem Asian J 2021; 16:3817-3832. [PMID: 34585842 DOI: 10.1002/asia.202100979] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/26/2021] [Indexed: 01/15/2023]
Abstract
Two-dimensional (2D) materials possess special physical and chemical properties. They have been proved to have potential application advantage in the microwave absorption (MA) and electromagnetic interference (EMI) shielding. Particularly, they exhibit positive shielding and absorbing response to EMI. Here, the research progress of preparation, electromagnetic performance and microwave shielding/absorbing mechanisms of 2D composite materials are introduced. Effective preparation routes including introducing heteroatoms, constructing unique structures and 2D composite materials are described. Furthermore, the application prospects and challenges for the development of novel EMI materials are expatiated.
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Affiliation(s)
- Jie Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China.,Electromagnetic Protection Materials and Technology, Key Laboratory of Shanxi Province, 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan, 030006, P. R. China
| | - Jianchao Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China
| | - Xiaofeng Shuai
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China
| | - Ruihua Zhao
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China.,Shanxi Kunming Tobacco Co. Ltd., 21 Dachang South Road, Taiyuan, Shanxi, P. R. China
| | - Tianyu Guo
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China.,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China
| | - Kexun Li
- Electromagnetic Protection Materials and Technology, Key Laboratory of Shanxi Province, 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan, 030006, P. R. China
| | - Donghong Wang
- Electromagnetic Protection Materials and Technology, Key Laboratory of Shanxi Province, 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan, 030006, P. R. China
| | - Chen Ma
- Electromagnetic Protection Materials and Technology, Key Laboratory of Shanxi Province, 33rd Research Institute of China Electronics Technology Group Corporation, Taiyuan, 030006, P. R. China
| | - Jinping Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China.,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China
| | - Jianping Du
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China.,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No. 79 Yingze West Street, Taiyuan, Shanxi, P. R. China
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Conceptual-based design of an ultrabroadband microwave metamaterial absorber. Proc Natl Acad Sci U S A 2021; 118:2110490118. [PMID: 34480006 PMCID: PMC8433515 DOI: 10.1073/pnas.2110490118] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 08/04/2021] [Indexed: 11/18/2022] Open
Abstract
While microwave absorption is a widely pursued topic, a conceptual-based design can offer a theoretical basis for generalization and improvements. We offer a design recipe for ultrabroadband absorption based on the use of electrical dipole resonance in a metallic ring to generate, via interaction with its image resonance, two high-impedance resonances. Impedance matching over the frequency range in between the two resonances is obtained by adding resistance to the metallic ring. To extend the absorption to an ultrabroadband spectrum, we employ a double-layer self-similar structure in conjunction with absorption of the diffracted waves at the higher frequency end. The resulting absorber pushes the overall performance close to the causality limit over a large absorption bandwidth. By introducing metallic ring structural dipole resonances in the microwave regime, we have designed and realized a metamaterial absorber with hierarchical structures that can display an averaged −19.4 dB reflection loss (∼99% absorption) from 3 to 40 GHz. The measured performance is independent of the polarizations of the incident wave at normal incidence, while absorption at oblique incidence remains considerably effective up to 45°. We provide a conceptual basis for our absorber design based on the capacitive-coupled electrical dipole resonances in the lateral plane, coupled to the standing wave along the incident wave direction. To realize broadband impedance matching, resistive dissipation of the metallic ring is optimally tuned by using the approach of dispersion engineering. To further extend the absorption spectrum to an ultrabroadband range, we employ a double-layer self-similar structure in conjunction with the absorption of the diffracted waves at the higher end of the frequency spectrum. The overall thickness of the final sample is 14.2 mm, only 5% over the theoretical minimum thickness dictated by the causality limit.
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Cherkasova OP, Serdyukov DS, Nemova EF, Ratushnyak AS, Kucheryavenko AS, Dolganova IN, Xu G, Skorobogatiy M, Reshetov IV, Timashev PS, Spektor IE, Zaytsev KI, Tuchin VV. Cellular effects of terahertz waves. JOURNAL OF BIOMEDICAL OPTICS 2021; 26:JBO-210179VR. [PMID: 34595886 PMCID: PMC8483303 DOI: 10.1117/1.jbo.26.9.090902] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/08/2021] [Indexed: 05/15/2023]
Abstract
SIGNIFICANCE An increasing interest in the area of biological effects at exposure of tissues and cells to the terahertz (THz) radiation is driven by a rapid progress in THz biophotonics, observed during the past decades. Despite the attractiveness of THz technology for medical diagnosis and therapy, there is still quite limited knowledge about safe limits of THz exposure. Different modes of THz exposure of tissues and cells, including continuous-wave versus pulsed radiation, various powers, and number and duration of exposure cycles, ought to be systematically studied. AIM We provide an overview of recent research results in the area of biological effects at exposure of tissues and cells to THz waves. APPROACH We start with a brief overview of general features of the THz-wave-tissue interactions, as well as modern THz emitters, with an emphasis on those that are reliable for studying the biological effects of THz waves. Then, we consider three levels of biological system organization, at which the exposure effects are considered: (i) solutions of biological molecules; (ii) cultures of cells, individual cells, and cell structures; and (iii) entire organs or organisms; special attention is devoted to the cellular level. We distinguish thermal and nonthermal mechanisms of THz-wave-cell interactions and discuss a problem of adequate estimation of the THz biological effects' specificity. The problem of experimental data reproducibility, caused by rareness of the THz experimental setups and an absence of unitary protocols, is also considered. RESULTS The summarized data demonstrate the current stage of the research activity and knowledge about the THz exposure on living objects. CONCLUSIONS This review helps the biomedical optics community to summarize up-to-date knowledge in the area of cell exposure to THz radiation, and paves the ways for the development of THz safety standards and THz therapeutic applications.
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Affiliation(s)
- Olga P. Cherkasova
- Institute of Laser Physics of the Siberian Branch of the Russian Academy of Sciences, Russian Federation
- Novosibirsk State Technical University, Russian Federation
| | - Danil S. Serdyukov
- Institute of Laser Physics of the Siberian Branch of the Russian Academy of Sciences, Russian Federation
- Federal Research Center Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Russian Federation
| | - Eugenia F. Nemova
- Institute of Laser Physics of the Siberian Branch of the Russian Academy of Sciences, Russian Federation
| | - Alexander S. Ratushnyak
- Institute of Computational Technologies of the Siberian Branch of the Russian Academy of Sciences, Russian Federation
| | - Anna S. Kucheryavenko
- Institute of Solid State Physics of the Russian Academy of Sciences, Russian Federation
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Russian Federation
| | - Irina N. Dolganova
- Institute of Solid State Physics of the Russian Academy of Sciences, Russian Federation
- Sechenov University, Institute for Regenerative Medicine, Russian Federation
- Sechenov University, World-Class Research Center “Digital Biodesign and Personalized Healthcare,” Russian Federation
| | - Guofu Xu
- Polytechnique Montreal, Department of Engineering Physics, Canada
| | | | - Igor V. Reshetov
- Sechenov University, Institute for Cluster Oncology, Russian Federation
- Academy of Postgraduate Education FSCC FMBA, Russian Federation
| | - Peter S. Timashev
- Sechenov University, Institute for Regenerative Medicine, Russian Federation
- Sechenov University, World-Class Research Center “Digital Biodesign and Personalized Healthcare,” Russian Federation
- N.N. Semenov Institute of Chemical Physics, Department of Polymers and Composites, Russian Federation
- Lomonosov Moscow State University, Department of Chemistry, Russian Federation
| | - Igor E. Spektor
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Russian Federation
| | - Kirill I. Zaytsev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Russian Federation
- Sechenov University, Institute for Regenerative Medicine, Russian Federation
- Bauman Moscow State Technical University, Russian Federation
| | - Valery V. Tuchin
- Saratov State University, Russian Federation
- Institute of Precision Mechanics and Control of the Russian Academy of Sciences, Russian Federation
- National Research Tomsk State University, Russian Federation
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47
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Orlacchio R, Nikolayev D, Le Page Y, Le Drean Y, Zhadobov M. Millimeter-wave Heating in vitro: Local Microscale Temperature Measurements Correlated to Heat Shock Cellular Response. IEEE Trans Biomed Eng 2021; 69:840-848. [PMID: 34437056 DOI: 10.1109/tbme.2021.3108038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Cellular sensitivity to heat is highly variable depending on the cell line. The aim of this paper is to assess the cellular sensitivity of the A375 melanoma cell line to continuous (CW) millimeter-waves (MMW) induced heating at 58.4 GHz, between 37 C and 47 C C to get a deeper insight into optimization of thermal treatment of superficial skin cancer. METHODS Phosphorylation of heat shock protein 27 (HSP27) was mapped within an area of about 30 mm2 to visualize the variation of heat-induced cellular stress as a function of the distance from the waveguide aperture (MMW radiation source). A multiphysics computational approach was then adopted to yield both electromagnetic and thermal field distributions as well as corresponding specific absorption rate (SAR) and temperature elevation. Induced temperature rise was experimentally measured using a micro-thermocouple (TC). RESULTS Coupling of the incident electromagnetic (EM) field with TC leads was first characterized, and optimal TC placing was identified. HSP27 phosphorylation was induced at temperatures 41 C, and its level increases as a function of the thermal dose delivered, remaining mostly focused within 3 mm2. CONCLUSION Phosphorylation of HSP27 represents a valuable marker of cellular stress of A375 melanoma cells under MMW exposure, providing both quantitative and spatial information about the distribution of the thermal stress. SIGNIFICANCE These results may contribute to the design of thermal treatments of superficial melanoma through MMW-induced heating in the hyperthermic temperature range.
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Yu G, Bai Z, Song C, Cheng Q, Wang G, Tang Z, Yang S. Current progress on the effect of mobile phone radiation on sperm quality: An updated systematic review and meta-analysis of human and animal studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 282:116952. [PMID: 33862271 DOI: 10.1016/j.envpol.2021.116952] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 03/06/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
Potential suppression of fertility due to mobile phone radiation remains a focus of researchers. We conducted meta-analyses on the effects of mobile phone radiation on sperm quality using recent evidence and propose some perspectives on this issue. Using the MEDLINE/PubMed, Embase, WOS, CENTRAL, and ClinicalTrials.gov databases, we retrieved and screened studies published before December 2020 on the effects of mobile phone use/mobile phone RF-EMR on sperm quality. Thirty-nine studies were included. Data quality and general information of the studies were evaluated and recorded. Sperm quality data (density, motility, viability, morphology, and DFI) were compiled for further analyses, and we conducted subgroup, sensitivity, and publication bias analyses. The pooled results of human cross-sectional studies did not support an association of mobile phone use and a decline in sperm quality. Different study areas contributed to the heterogeneity of the studies. In East Europe and West Asia, mobile phone use was correlated with a decline in sperm density and motility. Mobile phone RF-EMR exposure could decrease the motility and viability of mature human sperm in vitro. The pooled results of animal studies showed that mobile phone RF-EMR exposure could suppress sperm motility and viability. Furthermore, it reduced sperm density in mice, in rats older than 10 weeks, and in rats restrained during exposure. Differences regarding age, modeling method, exposure device, and exposure time contributed to the heterogeneity of animal studies. Previous studies have extensively investigated and demonstrated the adverse effects of mobile phone radiation on sperm. In the future, new standardized criteria should be applied to evaluate potential effects of mobile phone RF-EMR dosages. Further sperm-related parameters at the functional and molecular levels as well as changes in biological characteristics of germ cells should be evaluated. Moreover, the impact of mobile phone RF-EMR on individual organs should also be examined.
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Affiliation(s)
- Gang Yu
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhiming Bai
- Department of Urology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China; Haikou Center for Medical Synchrotron Radiation Research, Haikou People's Hospital, Haikou, China
| | - Chao Song
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qing Cheng
- Department of Urology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Gang Wang
- Department of Urology, Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Zeping Tang
- Guangdong Environmental Radiation Monitoring Center, Guangzhou, China
| | - Sixing Yang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, China.
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Karipidis K, Mate R, Urban D, Tinker R, Wood A. 5G mobile networks and health-a state-of-the-science review of the research into low-level RF fields above 6 GHz. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2021; 31:585-605. [PMID: 33727687 PMCID: PMC8263336 DOI: 10.1038/s41370-021-00297-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/23/2020] [Accepted: 01/21/2021] [Indexed: 05/27/2023]
Abstract
The increased use of radiofrequency (RF) fields above 6 GHz, particularly for the 5 G mobile phone network, has given rise to public concern about any possible adverse effects to human health. Public exposure to RF fields from 5 G and other sources is below the human exposure limits specified by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). This state-of-the science review examined the research into the biological and health effects of RF fields above 6 GHz at exposure levels below the ICNIRP occupational limits. The review included 107 experimental studies that investigated various bioeffects including genotoxicity, cell proliferation, gene expression, cell signalling, membrane function and other effects. Reported bioeffects were generally not independently replicated and the majority of the studies employed low quality methods of exposure assessment and control. Effects due to heating from high RF energy deposition cannot be excluded from many of the results. The review also included 31 epidemiological studies that investigated exposure to radar, which uses RF fields above 6 GHz similar to 5 G. The epidemiological studies showed little evidence of health effects including cancer at different sites, effects on reproduction and other diseases. This review showed no confirmed evidence that low-level RF fields above 6 GHz such as those used by the 5 G network are hazardous to human health. Future experimental studies should improve the experimental design with particular attention to dosimetry and temperature control. Future epidemiological studies should continue to monitor long-term health effects in the population related to wireless telecommunications.
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Affiliation(s)
- Ken Karipidis
- Australian Radiation Protection and Nuclear Safety Agency, Melbourne, VIC, Australia.
| | - Rohan Mate
- Australian Radiation Protection and Nuclear Safety Agency, Melbourne, VIC, Australia
| | - David Urban
- Australian Radiation Protection and Nuclear Safety Agency, Melbourne, VIC, Australia
| | - Rick Tinker
- Australian Radiation Protection and Nuclear Safety Agency, Melbourne, VIC, Australia
| | - Andrew Wood
- School of Health Sciences, Swinburne University of Technology, Melbourne, VIC, Australia
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A Meta-Integrative Qualitative Study on the Hidden Threats of Smart Buildings/Cities and Their Associated Impacts on Humans and the Environment. BUILDINGS 2021. [DOI: 10.3390/buildings11060251] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Smart buildings deploying 5G and the Internet of Things (IoT) are viewed as the next sustainable solution that can be seamlessly integrated in all sectors of the built environment. The benefits are well advertised and range from inducing wellness and monitoring health, amplifying productivity, to energy savings. Comparatively, potential negative risks are less known and mostly relate to cyber-security threats and radiation effects. This meta-integrative qualitative synthesis research sought to determine the possible underlying demerits from developing smart buildings, and whether they outweigh the possible benefits. The study identified five master themes as threats of smart buildings: a surfeit of data centers, the proliferation of undersea cables, the consternation of cyber-security threats, electromagnetic pollution, and E-waste accumulation. Further, the paper discusses the rebound impacts on humans and the environment as smart buildings’ actualization becomes a reality. The study reveals that, although some aspects of smart buildings do have their tangible benefits, the potential repercussions from these not-so-discussed threats could undermine the former when all perspectives and interactions are analyzed collectively rather than in isolation.
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