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Çobanoğlu H, Çayır A. Occupational exposure to radiation among health workers: Genome integrity and predictors of exposure. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 893:503726. [PMID: 38272632 DOI: 10.1016/j.mrgentox.2024.503726] [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: 08/20/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024]
Abstract
The current study aimed to investigate genomic instabilities in healthcare workers who may experience varying levels of radiation exposure through various radiological procedures. It also sought to determine if factors related to the work environment and dosimeter reading could effectively explain the observed genomic instabilities. Utilizing the cytokinesis-block micronucleus assay (CBMN) on peripheral blood lymphocytes, we assessed a spectrum of genomic aberrations, including nucleoplasmic bridge (NPB), nuclear budding (NBUD), micronucleus (MN) formation, and total DNA damage (TDD). The study uncovered a statistically significant increase in the occurrence of distinct DNA anomalies among radiology workers (with a significance level of P < 0.0001 for all measurements). Notably, parameters such as total working hours, average work duration, and time spent in projection radiography exhibited significant correlations with MN and TDD levels in these workers. The dosimeter readings demonstrated a positive correlation with the frequency of NPB and NBUD, indicating a substantial association between radiation exposure and these two genomic anomalies. Our multivariable models identified the time spent in projection radiography as a promising parameter for explaining the overall genomic instability observed in these professionals. Thus, while dosimeters alone may not fully explain elevated total DNA damage, intrinsic work environment factors hold potential in indicating exposure levels for these individuals, providing a complementary approach to monitoring.
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Affiliation(s)
- Hayal Çobanoğlu
- Health Services Vocational College, Çanakkale Onsekiz Mart University, Çanakkale 17100, Turkey
| | - Akın Çayır
- Health Services Vocational College, Çanakkale Onsekiz Mart University, Çanakkale 17100, Turkey.
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2
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Kuchi Bhotla H, Balasubramanian B, Rengasamy KRR, Arumugam VA, Alagamuthu KK, Chithravel V, Chaudhary A, Alanazi AM, Pappuswamy M, Meyyazhagan A. Genotoxic repercussion of high-intensity radiation (x-rays) on hospital radiographers. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2023; 64:123-131. [PMID: 36541415 DOI: 10.1002/em.22523] [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: 05/10/2022] [Revised: 11/29/2022] [Accepted: 12/12/2022] [Indexed: 05/24/2023]
Abstract
Recent technological advances in the medical field have increased the plausibility of exposing humans to high-intensity wavelength radiations like x-rays and gamma rays while diagnosing or treating specific medical maladies. These radiations induce nucleotide changes and chromosomal alterations in the exposed population, intentionally or accidentally. A radiological investigation is regularly used in identifying the disease, especially by the technicians working in intensive care units. The current study observes the genetic damages like chromosomal abnormalities (CA) in clinicians who are occupationally exposed to high-intensity radiations (x-rays) at their workplaces using universal cytogenetic tools like micronucleus assay (MN), sister chromatid exchange and comet assay. The study was conducted between 100 exposed practitioners from the abdominal scanning, chest scanning, cranial and orthopedic or bone scanning department and age-matched healthy controls. We observed a slightly higher rate of MN and CA (p < .05) in orthopedic and chest department practitioners than in other departments concerning increasing age and duration of exposure at work. Our results emphasize taking extra precautionary measures in clinical and hospital radiation laboratories to protect the practitioners.
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Affiliation(s)
| | | | - Kannan R R Rengasamy
- Centre of Excellence for Pharmaceutical Sciences, North-West University, Potchefstroom, South Africa
- Laboratory of Natural Products and Medicinal Chemistry (LNPMC), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, India
| | - Vijaya Anand Arumugam
- Medical Genetics and Epigenetics Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Karthick Kumar Alagamuthu
- Department of Biotechnology, Selvamm Arts and Science College (Autonomous), Namakkal, Tamil Nadu, India
| | | | - Aditi Chaudhary
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, India
| | - Amer M Alanazi
- Pharmaceutical Chemistry Department, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | | | - Arun Meyyazhagan
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, India
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Kadlcikova D, Musilova P, Hradska H, Vozdova M, Petrovova M, Svoboda M, Rubes J. Chromosomal damage in occupationally exposed health professionals assessed by two cytogenetic methods. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2022; 78:158-169. [PMID: 36073861 DOI: 10.1080/19338244.2022.2118213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The study assessed occupationally induced chromosomal damage in hospital personnel at risk of exposure to antineoplastic drugs and/or low doses of ionizing radiation by two cytogenetic methods. Cultured peripheral blood lymphocytes of eighty-five hospital workers were examined twice over 2 to 3 years by classical chromosomal aberration analysis and fluorescence in situ hybridization. The comparison of the 1st and the 2nd sampling of hospital workers showed a significant increase in chromatid and chromosomal aberrations (all p < .05) examined by classical chromosomal aberration analysis, and in unstable aberrations (all p < .05) detected by fluorescence in situ hybridization. Both cytogenetic methods were able to detect an increase of unstable aberrations in the 2nd sampling. The raised frequency of unstable cytogenetic parameters suggested higher recent exposure to genotoxic agents.
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Affiliation(s)
- Dita Kadlcikova
- Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology - Veterinary Research Institute, Brno, Czech Republic
| | - Petra Musilova
- Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology - Veterinary Research Institute, Brno, Czech Republic
| | - Hana Hradska
- Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology - Veterinary Research Institute, Brno, Czech Republic
| | - Miluse Vozdova
- Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology - Veterinary Research Institute, Brno, Czech Republic
| | - Marketa Petrovova
- Clinic of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Marek Svoboda
- Clinic of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Jiri Rubes
- Department of Genetics and Reproductive Biotechnologies, Central European Institute of Technology - Veterinary Research Institute, Brno, Czech Republic
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Shafiee M, Borzoueisileh S, Rashidfar R, Dehghan M, Jaafarian Sisakht Z. Chromosomal aberrations in C-arm fluoroscopy, CT-scan, lithotripsy, and digital radiology staff. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2020; 849:503131. [PMID: 32087852 DOI: 10.1016/j.mrgentox.2020.503131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 11/16/2022]
Abstract
We have assessed chromosome-type aberrations and micronuclei in the peripheral lymphocytes of personnel working with C-arm fluoroscopy, multi-slice CT-scan, lithotripsy, and digital radiology medical procedures. The study population comprised of 46 exposed workers and 35 controls matched for age, gender, and other confounding factors. Chromosome-type aberrations and micronuclei were analyzed and compared with occupational dosimetry data. The highest frequency of both chromosome aberrations (1.62 CA/100 cells) and MN (MN = 7.47 ± 2.55) was observed in the operating room group. According to occupational dosimetry, surgeons and medical staff received 0-2.99 mSv over the previous year, well below the limit established by the International Committee on Radiation Protection. An increased level of chromosomal aberrations was observed among workers exposed in the operating rooms. We recommend that operating room radiation safety programs be improved and better supervised, in particular for orthopedic surgeons and personnel performing fluoroscopically guided procedures.
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Affiliation(s)
- Mohsen Shafiee
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Sajad Borzoueisileh
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
| | - Razieh Rashidfar
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Dehghan
- Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran
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5
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El-Benhawy SA, Sadek NA, Behery AK, Issa NM, Ali OK. Chromosomal aberrations and oxidative DNA adduct 8-hydroxy-2-deoxyguanosine as biomarkers of radiotoxicity in radiation workers. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2015.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Sanaa A. El-Benhawy
- Radiation Sciences Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Nadia A. Sadek
- Hematology Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Amal K. Behery
- Human Genetics Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Noha M. Issa
- Human Genetics Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Osama K. Ali
- Department of Radiology and Medical Imaging, University of 6 October, Cairo, Egypt
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Pajic J, Rakic B, Jovicic D, Milovanovic A. A cytogenetic study of hospital workers occupationally exposed to radionuclides in Serbia: premature centromere division as novel biomarker of exposure? Int Arch Occup Environ Health 2015; 89:477-84. [PMID: 26373643 DOI: 10.1007/s00420-015-1086-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 09/07/2015] [Indexed: 11/27/2022]
Abstract
PURPOSE The health risk of chronic exposure to radionuclides includes changes in the genome (e.g., chromosomal aberrations and micronuclei) that increase chromosomal instability. There are also other phenomena, which seem to appear more frequently in metaphases of exposed persons (such as premature centromere division). The aim of this study was to discover whether or not there is correlation between incidence of named cytogenetic changes in persons occupationally exposed to radionuclides in comparison with unexposed control group, and if significant correlation is determined, can premature centromere division be consider as a biomarker of radiation exposure? METHODS The exposed group comprised 50 individuals occupationally exposed to radionuclides. The reference control group consisted of 40 unexposed individuals. Chromosomal aberrations, micronuclei and premature centromere division were analyzed according to a standard International Atomic Energy Agency protocol. Statistical analyses were performed using SPSS 17.0 statistics. RESULTS The means for analyzed cytogenetic changes were significantly higher in the exposed group. Positive correlation between them was found in exposed group. Premature centromere division parameter PCD5-10 was selected as particularly suitable for separating groups (exposed/unexposed). CONCLUSIONS Identification of other phenomena related to radionuclide exposure, beside well known, may clarify recent problems in radiobiology concerning the biological response to low doses of ionizing radiation and its consequences.
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Affiliation(s)
- Jelena Pajic
- Biodosimetry Department, Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Radiation Protection Center, Deligradska 29, 11 000, Belgrade, Serbia.
| | - Boban Rakic
- Biodosimetry Department, Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Radiation Protection Center, Deligradska 29, 11 000, Belgrade, Serbia
| | - Dubravka Jovicic
- Genotoxicology Department, Faculty of Applied Ecology "Futura", University "Singidunum", Pozeska 83a, Belgrade, Serbia
| | - Aleksandar Milovanovic
- Biodosimetry Department, Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Radiation Protection Center, Deligradska 29, 11 000, Belgrade, Serbia
- Occupational Health Department, Faculty of Medicine, University of Belgrade, Dr Subotica 8, Belgrade, Serbia
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Pinto M, Amaral A. Biological dose assessment after low-dose overexposures in nuclear medicine. RADIATION PROTECTION DOSIMETRY 2014; 162:254-259. [PMID: 24225496 DOI: 10.1093/rpd/nct285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper focuses on the application of dicentric chromosome assay biodosimetry in cases of low-dose overexposures to professionals working in nuclear medicine and discusses how to present the results and associated uncertainties, to make possible a better understanding of biodosimetric reports. Five examples are presented of low or possibly zero exposure dose that are illustrative of typical problems that arise in occupational settings, in this instance in nuclear medicine departments. This is a scenario of minor concern in terms of health consequences but it is relevant in legal terms. They pose dilemmas for investigators but biological dosimetry can make a valuable contribution to resolving the cases.
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Affiliation(s)
- Marcela Pinto
- Nuclear Energy Department of Federal University of Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire, 1000, 50740-540 Recife, Brazil
| | - Ademir Amaral
- Nuclear Energy Department of Federal University of Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire, 1000, 50740-540 Recife, Brazil
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Gricienė B, Slapšytė G, Mierauskienė J. Cytogenetic monitoring of nuclear workers occupationally exposed to ionising radiation. RADIATION PROTECTION DOSIMETRY 2014; 159:10-19. [PMID: 24748484 DOI: 10.1093/rpd/ncu124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Chromosome aberration (CA) analysis using Giemsa techniques was performed in blood lymphocytes of 84 nuclear workers with cumulative doses of 1-632 mSv during employment periods of 1-25 y. The control group comprised 82 healthy male donors. An estimated CA frequency in the total radiation-exposed group was significantly higher when compared with the controls (2.27 vs. 1.76 CA/100 cells, p < 0.05). CA analyses revealed no significant differences between workers with external gamma radiation exposure and the controls (1.60 vs. 1.76 CA/100 cells, p > 0.05). However, significant increase in the total CA frequency was determined in workers with additional internal exposure (2.54 CA/100 cells, p < 0.05) and those with registered neutron doses (2.95 CA/100 cells, p < 0.01). No correlation was found between CA frequency and occupational exposure dose. Borderline significant correlation was found between duration of employment and total CA (r = 0.218, p = 0.046, Fig. 2) and chromosome-type aberration (r = 0.265, p = 0.015) frequency.
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Affiliation(s)
- B Gricienė
- Department of Radiology, Nuclear Medicine and Physics of Medicine, Faculty of Medicine, Vilnius University, Santariškių 2, LT-08661 Vilnius, Lithuania Department of Botany and Genetics, Faculty of Natural Sciences, Vilnius University, M.K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania
| | - G Slapšytė
- Department of Botany and Genetics, Faculty of Natural Sciences, Vilnius University, M.K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania
| | - J Mierauskienė
- Department of Botany and Genetics, Faculty of Natural Sciences, Vilnius University, M.K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania
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Vellingiri B, Shanmugam S, Subramaniam MD, Balasubramanian B, Meyyazhagan A, Alagamuthu K, Prakash V, Shafiahammedkhan M, Kathannan S, Pappuswamy M, Raviganesh B, Anand S, Shahnaz N D, Cho SG, Keshavarao S. Cytogenetic endpoints and Xenobiotic gene polymorphism in lymphocytes of hospital workers chronically exposed to ionizing radiation in Cardiology, Radiology and Orthopedic Laboratories. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 100:266-274. [PMID: 24290889 DOI: 10.1016/j.ecoenv.2013.09.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/21/2013] [Accepted: 09/28/2013] [Indexed: 06/02/2023]
Abstract
Ionizing radiation (IR) is known as a classical mutagen capable of inducing various kinds of stable and unstable chromosomal aberrations (CA) including the possibility of increasing the incidence of DNA damage. This study aims to assess occupationally induced CA in workers chronically exposed to low doses of IR in Radiology (RL), Cardiology (CL) and Orthopedic (OL) Laboratories in hospitals of Tamil Nadu. We performed the analysis of CA by trypsin G-banding, micronucleus (MN) assay, Comet assay and Xenobiotic-metabolizing gene polymorphisms (GSTM1, GSTT1 and GSTP1) in 56 exposed and 56 control subjects who were matched for gender and age (± 2 years). Higher degree of CA and MN frequencies were observed in exposed groups, especially in CL subjects compared to other exposed groups and controls (p<0.05). Higher frequency of DNA tail length and tail moment was observed in the CL exposed subjects compared to the RL and OL subjects. The frequencies of GSTM1 and GSTT1 null genotypes were 39.3 percent and 14.3 percent, respectively. No significant difference in allele frequencies between exposed subjects and controls were observed (p=0.0128). Using multiple linear regression analysis, statistical significance was determined for work duration and age for the CL, RL and OL workers and the examination of the possible impact by confounding factors showed few significant influences on the radiation exposure, as a specific biomarker. However, the findings from the present study suggest that, awareness should be created among the personnel exposed to radiations in hospital laboratories, highlighting the necessity of applying radiation protection principles against medical radiation exposure.
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Affiliation(s)
- Balachandar Vellingiri
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India.
| | - Sureshkumar Shanmugam
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Mohana Devi Subramaniam
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | | | - Arun Meyyazhagan
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Karthickkumar Alagamuthu
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Varsha Prakash
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | | | - Sankar Kathannan
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Manikantan Pappuswamy
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Banu Raviganesh
- PG and Research Center, Department of Biotechnology, Hindustan College, India
| | | | | | - Ssang-Goo Cho
- Molecular Cell Biology and Stem Cell Laboratory, Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul 143 701, South Korea
| | - Sasikala Keshavarao
- Human Molecular Genetics Laboratory, Department of Zoology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
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Santovito A, Cervella P, Delpero M. Increased frequency of chromosomal aberrations and sister chromatid exchanges in peripheral lymphocytes of radiology technicians chronically exposed to low levels of ionizing radiations. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:396-403. [PMID: 24440812 DOI: 10.1016/j.etap.2013.12.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 12/02/2013] [Accepted: 12/20/2013] [Indexed: 06/03/2023]
Abstract
Chromosome aberrations (CAs) and sister chromatid exchanges (SCEs) frequencies were estimated in peripheral lymphocytes from 21 radiology technicians, and from 21 non-exposed control subjects. We exclusively considered individuals who neither smoke nor consume drugs or alcohol for a period of at least two years prior to the analysis. Significant differences were found between exposed and controls in terms of SCEs and CAs frequencies. Technicians showed a significant higher number of high-frequency individuals (HFIs) with respect to the control group. Nevertheless, the mean frequency of SCEs observed among technician HFIs did not significantly differ with respect to that observed among control HFIs. Vice versa, the non-HFIs belonging to technicians group showed a statistically higher difference in the SCEs/NSM value with respect to the non-HFIs belonging to control group. Since the differences in the SCEs frequencies between the two groups are due to non-HFIs, our results seem to indicate a general genotoxic effect of the IR, not affected by HFIs. Among technicians, the level of chromosome damage correlated neither with years of radiation exposure nor with the age of the subjects. Vice versa, in the control group, a positive correlation was found between the number of SCEs and age. In both samples the gender status did not influence the frequencies of CAs and SCEs. Our results suggest that chronic long-term exposure to low doses of ionizing radiation could increase the CAs and SCEs frequencies. This study reinforces the relevance of the biomonitoring of hospital workers chronically exposed to ionizing radiation.
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Affiliation(s)
- Alfredo Santovito
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy.
| | - Piero Cervella
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
| | - Massimiliano Delpero
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123 Torino, Italy
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Sakly A, Ayed Y, Chaari N, Akrout M, Bacha H, Cheikh HB. Assessment of Chromosomal Aberrations and Micronuclei in Peripheral Lymphocytes from Tunisian Hospital Workers Exposed to Ionizing Radiation. Genet Test Mol Biomarkers 2013. [DOI: org/10.1089/gtmb.2012.0111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Affiliation(s)
- Amina Sakly
- Laboratory of Genetics (02/UR/08-03), University Medicinal School of Monastir, Monastir, Tunisia
| | - Yosra Ayed
- Laboratory for Research on Biologically Compatible Compounds, Faculty of Dentistry, Monastir, Tunisia
| | - Neila Chaari
- Department of Occupational Medicine and Ergonomics, EPS Fattouma Bourguiba of Monastir, Monastir, Tunisia
| | - Mohamed Akrout
- Department of Occupational Medicine and Ergonomics, EPS Fattouma Bourguiba of Monastir, Monastir, Tunisia
| | - Hassen Bacha
- Laboratory for Research on Biologically Compatible Compounds, Faculty of Dentistry, Monastir, Tunisia
| | - Hassen Ben Cheikh
- Laboratory of Genetics (02/UR/08-03), University Medicinal School of Monastir, Monastir, Tunisia
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12
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Saberi A, Salari E, Latifi SM. Cytogenetic analysis in lymphocytes from radiation workers exposed to low level of ionizing radiation in radiotherapy, CT-scan and angiocardiography units. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 750:92-5. [DOI: 10.1016/j.mrgentox.2012.10.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 09/24/2012] [Accepted: 10/06/2012] [Indexed: 11/15/2022]
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13
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Sakly A, Ayed Y, Chaari N, Akrout M, Bacha H, Cheikh HB. Assessment of chromosomal aberrations and micronuclei in peripheral lymphocytes from tunisian hospital workers exposed to ionizing radiation. Genet Test Mol Biomarkers 2012; 17:650-5. [PMID: 23216272 DOI: 10.1089/gtmb.2012.0111] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Epidemiological studies suggest that cytogenetic biomarkers, such as micronuclei (MN) in peripheral blood lymphocytes may predict cancer risk because they indicate genomic instability. The objective of the present study was to evaluate the frequencies of MN and chromosome aberrations (CA) in peripheral blood lymphocytes of hospital workers exposed to ionizing radiation and healthy subjects. The study was conducted using peripheral blood lymphocytes from 30 workers from the radiology department and 30 from the cardiology department. This study included 27 healthy age- and sex-matched individuals as the control group. The assessment of chromosomal damage was carried out by the use of CA and micronucleus assays in peripheral lymphocytes. Our results show that CA and micronucleus frequencies were significantly higher among the exposed groups when compared to controls. Our finding of significant increase of CA and MN frequencies in peripheral lymphocytes in exposed workers indicates a potential cytogenetic hazard due to this exposure. The enhanced chromosomal damage of subjects exposed to genotoxic agents emphasizes the need to develop safety programs.
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Affiliation(s)
- Amina Sakly
- Laboratory of Genetics (02/UR/08-03), University Medicinal School of Monastir, Monastir, Tunisia.
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14
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Zakeri F, Rajabpour MR, Haeri SA, Kanda R, Hayata I, Nakamura S, Sugahara T, Ahmadpour MJ. Chromosome aberrations in peripheral blood lymphocytes of individuals living in high background radiation areas of Ramsar, Iran. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2011; 50:571-578. [PMID: 21894441 DOI: 10.1007/s00411-011-0381-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Accepted: 08/10/2011] [Indexed: 05/31/2023]
Abstract
In order to investigate the biological effects of exposure to low-dose radiation and to assess the dose-effect relationship in residents of high background radiation areas (HBRAs) of Ramsar, cytogenetic investigation of unstable-type aberrations was performed in 15 healthy elderly women in a HBRA of Ramsar, Talesh mahalle, and in 10 elderly women living in a nearby control area with normal background radiation. In total, 77,714 cells were analyzed; 48,819 cells in HBRA residents and 28,895 cells in controls. On average, 3,108 cells per subject were analyzed (range 1,475-5,007 cells). Significant differences were found in the frequency of dicentric plus centric rings in 100 cells (0.207 ± 0.103 vs. 0.047 ± 0.027, p < 0.0005), total chromosome-type aberrations per 100 cells (0.86 ± 0.44 vs. 0.23 ± 0.17, p < 0.0005), and chromatid-type aberrations per 100 cells (3.31 ± 2.01 vs. 1.66 ± 0.63, p = 0.01) by the Mann-Whitney U test between HBRA and the control, respectively. Using chromosomal aberrations as the main endpoint to assess the dose-effect relationship in residents of HBRAs in Ramsar, no positive correlation was found between the frequency of dicentric plus centric ring aberrations and the cumulative dose of the inhabitants estimated by direct individual dosimetry; however, obvious trends of increase with age appeared in the control group. Based on these results, individuals residing in HBRAs of Ramsar have an increased frequency of detectable abnormalities in unstable aberrations.
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Affiliation(s)
- F Zakeri
- National Radiation Protection Department, Iranian Nuclear Regulatory Authority, Tehran, Iran.
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Chromosome aberrations in peripheral blood lymphocytes of Croatian hospital staff occupationally exposed to low levels of ionising radiation. Arh Hig Rada Toksikol 2009; 59:251-9. [PMID: 19064362 DOI: 10.2478/10004-1254-59-2008-1909] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Medical staff is an occupational group exposed to different agents suspected to induce genetic damage. Among them ionising radiation is the most studied. Cytogenetic analysis of human chromosomes in peripheral lymphocytes allows direct detection of mutation in somatic cells. This study investigated the cytogenetic effects of low-level ionising x-radiation in 48-hour peripheral blood lymphocyte cultures sampled from 765 hospital staff occupationally exposed to several agents known or suspected to induce chromosome damage and compared them with 200 control subjects. The exposed subjects were divided in eight (8) groups according to their specialties and job titles. The exposed groups manifested an increase in all types of chromosome aberrations. Acentric fragments were the most frequent chromosome-type aberration. Dicentric chromosomes were statistically significant only in urologists/gynaecologists. Age and smoking significantly influenced the incidence of dicentrics in the exposed groups. The frequency of ring chromosomes was low in all exposed groups (range: 0-2), and none were found in the control group. These findings indicate the importance of periodic medical checkups of hospital staff occupationally exposed to low doses of ionising radiation. The purpose is to create an individual cytogenetic register, where changes could evidence individual risks.
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