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Pham ND, Tran TM, Anderson D, Che QT, Pham HTK. Baseline micronucleus frequencies and 60Co cytokinesis-block micronucleus assay dose-response curve for biodosimetry in Vietnam. RADIATION PROTECTION DOSIMETRY 2024; 200:221-228. [PMID: 37807769 DOI: 10.1093/rpd/ncad266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/23/2023] [Accepted: 09/16/2023] [Indexed: 10/10/2023]
Abstract
This study aims to establish baseline micronucleus (MN) frequencies from various populations of residents in Vietnam and develop a 60Co dose-response curve for the cytokinesis-block micronucleus (CBMN) assay. Blood samples were exposed in vitro to a 60Co source at a dose rate of 275 mGy per min in a range of 0.1 to 4.0 Gy. MN background frequencies were 4.5 ± 3.2, 7.3 ± 4.6, 7.0 ± 3.8 and 13.1 ± 6.7 in 1000 binucleated (BN) cells for 96 healthy donors, 22 male radiation workers and 12 breast cancer patients, respectively. Blood samples from three healthy donors were used to generate the MN dose-response curve: y = C + (0.0496 ± 0.0069)D + (0.0143 ± 0.0026)D2. This curve was verified through an inter-laboratory comparison (RENEB ILC 2021). Our findings highlight the significance of the CBMN assay as an additional essential tool for biodosimetry in Vietnam.
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Affiliation(s)
- Ngoc Duy Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Thanh Mai Tran
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Donovan Anderson
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1, Hon-cho, Hirosaki-shi, Aomori 036-8564, Japan
| | - Quang Tuan Che
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Ho Thuat Khoa Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
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Meng QQ, Zhang RF, Zhang ZX, Yang Y, Chai DL, Yuan YY, Ren Y, Dong JC, Dang XH. ESTABLISHMENT OF THE IN VITRO DOSE-RESPONSE CALIBRATION CURVE FOR X-RAY-INDUCED MICRONUCLEI IN HUMAN LYMPHOCYTES. RADIATION PROTECTION DOSIMETRY 2022; 198:1338-1345. [PMID: 35961020 DOI: 10.1093/rpd/ncac170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/13/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
The cytokinesis-block micronucleus assay has proven to be a reliable technique for biological dosimetry. This study aimed to establish the dose-response curve for X-ray-induced micronucleus. Peripheral blood samples from three healthy donors were irradiated with various doses and scoring criteria by the micronuclei (MN) in binucleated cells. The results showed that the frequency of MN increased with the elevation of radiation dose. CABAS and Dose Estimate software were used to fit the MN and dose into a linear quadratic model, and the results were compared. The linear and quadratic coefficients obtained by the two software were basically the same and were comparable with published curves of similar radiation quality and dose rates by other studies. The dose-response curve established in this study can be used as an alternative method for in vitro dose reconstruction and provides a reliable tool for biological dosimetry in accidental or occupational radiation exposures.
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Affiliation(s)
- Qian-Qian Meng
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Rui-Feng Zhang
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Zhong-Xin Zhang
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Yi Yang
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Dong-Liang Chai
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Ya-Yi Yuan
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Yue Ren
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Juan-Cong Dong
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
| | - Xu-Hong Dang
- China Institute for Radiation Protection (CIRP), Taiyuan 030006, Shanxi, China
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Cai TJ, Li S, Lu X, Zhang CF, Yuan JL, Zhang QZ, Tian XL, Lian DX, Li MS, Zhang Z, Liu G, Zhao H, Niu LM, Tian M, Hou CS, Liu QJ. Dose-effect relationships of 12C 6+ ions-induced dicentric plus ring chromosomes, micronucleus and nucleoplasmic bridges in human lymphocytes in vitro. Int J Radiat Biol 2021; 97:657-663. [PMID: 33704009 DOI: 10.1080/09553002.2021.1900945] [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: 10/21/2022]
Abstract
PURPOSE The objective of this research was to explore the dose-effect relationships of dicentric plus ring (dic + r), micronucleus (MN) and nucleoplasmic bridges (NPB) induced by carbon ions in human lymphocytes. MATERIALS AND METHODS Venous blood samples were collected from three healthy donors. 12C6+ ions beam was used to irradiate the blood samples at the energy of 330 MeV and linear energy transfer (LET) of 50 keV/μm with a dose rate of 1 Gy/min in the spread-out Bragg peak. The irradiated doses were 0 (sham irradiation), 1, 2, 3, 4, 5 and 6 Gy. Dic + r chromosomes aberrations were scored in metaphases. The cytokinesis-block micronucleus cytome (CBMN) was conducted to analyze MN and NPB. The maximum low-dose relative biological effectiveness (RBEM) values of the induction of dic + r, MN and NPB in human lymphocytes for 12C6+ ions irradiation was calculated relative to 60Co γ-rays. RESULTS The frequencies of dic + r, MN and NPB showed significantly increases in a dose-depended manner after exposure to 12C6+ ions. The distributions of dic + r and MN exhibited overdispersion, while the distribution of NPB agreed with Poisson distribution at all doses. Linear-quadratic equations were established based on the frequencies of dic + r and MN. The dose-response curves of NPB frequencies followed a linear model. The derived RBEM values for dic + r, MN and NPB in human lymphocytes irradiated with 12C6+ ions were 8.07 ± 2.73, 2.69 ± 0.20 and 4.00 ± 2.69 in comparison with 60Co γ-rays. CONCLUSION The dose-response curves of carbon ions-induced dic + r, MN and NPB were constructed. These results could be helpful to improve radiation risk assessment and dose estimation after exposed to carbon ions irradiation.
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Affiliation(s)
- Tian-Jing Cai
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Shuang Li
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Xue Lu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Chun-Fei Zhang
- Central Medical District of PLA General Hospital, Beijing, P. R. China
| | - Ji-Long Yuan
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Qing-Zhao Zhang
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Xue-Lei Tian
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - De-Xing Lian
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Ming-Sheng Li
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Zhen Zhang
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Gang Liu
- Gansu Province Center for Disease Control and Prevention, Lanzhou, Gansu, P. R. China
| | - Hua Zhao
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Li-Mei Niu
- Gansu Province Center for Disease Control and Prevention, Lanzhou, Gansu, P. R. China
| | - Mei Tian
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Chang-Song Hou
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
| | - Qing-Jie Liu
- China CDC Key Laboratory of Radiological Protection and Nuclear Emergency, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing, P. R. China
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Effects of radiation quality and dose rate on radiation-induced nucleoplasmic bridges in human peripheral blood lymphocytes. Mutat Res 2021; 863-864:503321. [PMID: 33678246 DOI: 10.1016/j.mrgentox.2021.503321] [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: 08/24/2020] [Revised: 01/13/2021] [Accepted: 01/25/2021] [Indexed: 11/22/2022]
Abstract
Previous studies showed that the yield of cobalt-60 γ-rays-induced nucleoplasmic bridges (NPB) in human peripheral blood lymphocytes is dose dependent. However, the influence of the radiation quality and dose rates on NPB frequencies has not been investigated. The present study aimed to investigate NPB frequencies in human peripheral blood lymphocytes induced by carbon ions and explore the dose rate effect on cobalt-60 γ-rays-induced NPB. To establish dose-response curves, human peripheral blood samples were irradiated with 0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 and 8.0 Gy of carbon ions at a dose rate of 3.0 Gy/min in vitro. To explore the dose rate effect, human peripheral blood samples were irradiated with 2.0 and 5.0 Gy of cobalt-60 γ-rays at dose rates of 0.2, 0.5, 1.0, 3.0, 5.0 and 10.0 Gy/min in vitro. NPB and micronuclei (MN) in binucleated cells were analyzed with the cytokinesis-block micronucleus cytome assay. Results showed that the dose-response curve of carbon ion-induced NPB frequencies follow a linear-quadratic model (R2 = 0.934). The relative biological effectiveness (RBE) values of carbon ions to cobalt-60 γ-rays decreased with increased NPB frequencies (ranging from 2.47 to 5.86). Compared with group 1.0 Gy/min, the NPB frequencies in groups 10.0 Gy/min (2.0 Gy), 5.0 and 10.0 Gy/min (5.0 Gy) were decreased significantly (P < 0.05). Carbon ion-induced NPB in human peripheral blood lymphocytes have a good dose-response relationship. Cobalt-60 γ-rays-induced NPB frequencies are affected by the specific dose rate.
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Pajic J, Rovcanin B. Ionizing radiation-induced genotoxic and oxidative damage in peripheral lymphocytes and plasma of healthy donors. Mutat Res 2021; 863-864:503313. [PMID: 33678245 DOI: 10.1016/j.mrgentox.2021.503313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 12/20/2022]
Abstract
Biological dosimetry of ionizing radiation (IR) exposure relies on validated cytogenetic tests measuring the frequencies of micronuclei (MN) and dicentric chromosomes (DC). IR also causes oxidative damage of biomolecules, including DNA. We evaluated IR-induced genotoxic and oxidative damage in a carefully defined cohort of healthy donors, reducing confounding factors as much as possible. Frequencies of MN and DC (peripheral blood lymphocyte cultures) and oxidative stress parameters (plasma) were quantified. We observed dose dependence of both cytogenetic and biochemical endpoints, independent of age, sex, and smoking habits. Oxidative stress parameters, especially oxidative stress index, malondialdehyde, advanced oxidation protein products, and catalase, may be used confidently to assess IR-induced damage, if cytogenetic results are unavailable.
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Affiliation(s)
- J Pajic
- Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Deligradska 29, Belgrade, Serbia.
| | - B Rovcanin
- Branislav Rovcanin, Center for Endocrine Surgery, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, Koste Todorovica 8, Belgrade, Serbia
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Mendes ME, Mendonça JCG, Barquinero JF, Higueras M, Gonzalez JE, Andrade AMG, Silva LM, Nascimento AMS, Lima JCF, Silva JCG, Hwang S, Melo AMMA, Santos N, Lima FF. Comparative study of micronucleus assays and dicentric plus ring chromosomes for dose assessment in particular cases of partial-body exposure. Int J Radiat Biol 2019; 95:1058-1071. [DOI: 10.1080/09553002.2019.1607606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mariana E. Mendes
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
- Department of Genetics, Federal University of Pernambuco, Recife, Brazil
| | | | - Joan F. Barquinero
- Department of Animal Biology, Plant Biology and Ecology, Faculty of Biosciences, Autonomous University of Barcelona, Bellaterra, Spain
| | - Manuel Higueras
- Department of Mathematics and Computation, University of La Rioja, Logroño, Spain
| | | | - Aida M. G. Andrade
- Department of Genetics, Federal University of Pernambuco, Recife, Brazil
| | - Laís M. Silva
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
| | | | - Julianne C. F. Lima
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
| | - Júlio C. G. Silva
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
| | - Suy Hwang
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
| | - Ana M. M. A. Melo
- Department of Biophysics and Radiobiology, Federal University of Pernambuco, Recife, Brazil
| | - Neide Santos
- Department of Genetics, Federal University of Pernambuco, Recife, Brazil
| | - Fabiana F. Lima
- Regional Center of Nuclear Sciences of the Northeast (CRCN-NE), Recife, Brazil
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7
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Shakeri M, Zakeri F, Changizi V, Rajabpour MR, Farshidpour MR. Cytogenetic effects of radiation and genetic polymorphisms of the XRCC1 and XRCC3 repair genes in industrial radiographers. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2019; 58:247-255. [PMID: 30955049 DOI: 10.1007/s00411-019-00782-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
Different types of DNA damages caused by ionizing radiation may enhance the cancer risk in exposed individuals. Inherited variations in DNA repair genes cause the inter-individual variability in response to ionizing radiation. The purpose of this study was to determine the association between single nucleotide polymorphism (SNP) of two important DNA repair genes (XRCC1 R399Q and XRCC3 T241M) and the level of DNA damage investigated by micronucleus (MN) frequency in peripheral blood lymphocytes of 120 industrial radiographers (IR) and 120 non-exposed control individuals. The frequencies of MN and nucleoplasmic bridges were significantly higher in the IR group than in the control group (33.83 ± 11.96 vs. 7.47 ± 2.96, p < 0.0001 and 1.69 ± 1.86 vs. 0.12 ± 0.33, p < 0.0001). MN frequencies in the IR group were associated with the cumulative radiation doses (p < 0.0001, r = 0.58 for last 1 year of exposure and p < 0.0001, r = 0.67 for last 5 years of exposure). Polymorphism of XRCC3 T241M was associated with higher MN frequencies in the IR group. However, the same result was not observed between XRCC3 SNP and MN frequency in the control group. Consequently, XRCC3 241Met alleles may cause the increased DNA damage in the industrial radiographers.
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Affiliation(s)
- Mahsa Shakeri
- Department of Technology of Radiology and Radiotherapy, Allied Medical Sciences School, Tehran University of Medical Sciences, Tehran, Iran
| | - Farideh Zakeri
- Nuclear Science and Technology Research Institute, Tehran, Iran.
- Iran Nuclear Regulatory Authority, Tehran, Iran.
| | - Vahid Changizi
- Department of Technology of Radiology and Radiotherapy, Allied Medical Sciences School, Tehran University of Medical Sciences, Tehran, Iran
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8
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Viswanathan S, Kanagaraj K, Raavi V, Dhanasekaran S, Panicker VK, R K, S Balajee A, Perumal V. Does proliferation capacity of lymphocytes depend on human blood types? J Cell Biochem 2018; 120:5722-5728. [PMID: 30320915 DOI: 10.1002/jcb.27858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/19/2018] [Indexed: 12/18/2022]
Abstract
In vitro human lymphocyte culture methodology is well established yet certain confounding factors such as age, medical history as well as individual's blood type may potentially modulate in vitro proliferation response. These factors have to be carefully evaluated to release reliable test report in routine cytogenetic evaluation for various genetic conditions, radiation biodosimetry, etc. With this objective, the current study was focused on analyzing the proliferation response of lymphocytes drawn from 90 individuals (21-29 years) with different blood types. The proliferation response was assessed in the cultured lymphocytes by cell cycle, mitotic index (MI), and nuclear division index (NDI) after stimulation with phytohaemagglutinin (PHA). To investigate the toxic effect on proliferation, MI was calculated in representative samples of each blood type were X-irradiated. The results showed that there was no significant difference among the cell cycle phases of lymphocytes in different blood types (P > 0.05). Similarly, both MI and NDI of lymphocytes derived from different blood types also did not show significant difference ( P > 0.05). The extensive interindividual variation within and among the blood types is likely responsible for the lack of significant difference in lymphocyte proliferation. Although spontaneous proliferation efficiency of lymphocytes of different blood types after PHA stimulation was grossly similar, the MI observed after radiation exposure showed a significant difference ( P < 0.05) indicating a differential proliferation response among the blood types. Our results suggest that the blood types did not have any impact on PHA-induced proliferation; however, a specific differential lymphocyte proliferation observed after radiation exposure needs to be considered.
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Affiliation(s)
- Sribala Viswanathan
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute (Deemed to be University), Porur, India
| | - Karthik Kanagaraj
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute (Deemed to be University), Porur, India
| | - Venkateswarlu Raavi
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute (Deemed to be University), Porur, India
| | - Shanmugapriya Dhanasekaran
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute (Deemed to be University), Porur, India
| | - Vinod Kumar Panicker
- Department of Transfusion Medicine, Sri Ramachandra Medical College & Research Institute (Deemed to be University), Porur, India
| | - Krishnamoorthy R
- Department of Transfusion Medicine, Sri Ramachandra Medical College & Research Institute (Deemed to be University), Porur, India
| | - Adayabalam S Balajee
- Cytogenetics Biodosimetry Laboratory, REAC/TS, Oak Ridge Associated Universities, Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee
| | - Venkatachalam Perumal
- Department of Human Genetics, Sri Ramachandra Medical College and Research Institute (Deemed to be University), Porur, India
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9
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Construction of dose response curves up to 6 Gy for Micronucleus and Dicentric Chromosome Aberration Assay with 6 MV X-ray Beam. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Pajic J, Rovcanin B, Kekic D, Jovicic D, Milovanovic APS. The influence of redox status on inter-individual variability in the response of human peripheral blood lymphocytes to ionizing radiation. Int J Radiat Biol 2018; 94:569-575. [DOI: 10.1080/09553002.2018.1466207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jelena Pajic
- Radiation Protection Department, Radiation Protection Center, Serbian Institute of Occupational Health “Dr Dragomir Karajovic”, Belgrade, Serbia
| | - Branislav Rovcanin
- Center for Endocrine Surgery, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dusan Kekic
- Institute for Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dubravka Jovicic
- Faculty of Applied Ecology, Singidunum University, Belgrade, Serbia
| | - Aleksandar P. S. Milovanovic
- Radiation Protection Department, Radiation Protection Center, Serbian Institute of Occupational Health “Dr Dragomir Karajovic”, Belgrade, Serbia
- Occupational Health Department, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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11
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Ramachandran EN, Karuppasamy CV, Kumar VA, Soren DC, Kumar PRV, Koya PKM, Jaikrishan G, Das B. Radio-adaptive response in peripheral blood lymphocytes of individuals residing in high-level natural radiation areas of Kerala in the southwest coast of India. Mutagenesis 2017; 32:267-273. [PMID: 27831478 DOI: 10.1093/mutage/gew057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The present study investigates whether the chronic low-dose radiation exposure induces an in vivo radio-adaptive response in individuals from high-level natural radiation areas (HLNRA) of the Kerala coast. Peripheral blood samples from 54 adult male individuals aged between 26 and 65 years were collected for the study with written informed consent. Each of the whole blood sample was divided into three, one was sham irradiated, second and third was exposed to challenging doses of 1.0 and 2.0 Gy gamma radiation, respectively. Cytokinesis-block micronucleus (CBMN) assay was employed to study the radio-adaptive response. Seventeen individuals were from normal-level natural radiation area (NLNRA ≤1.5 mGy/year) and 37 from HLNRA (> 1.5 mGy/year). Based on the annual dose received, individuals from HLNRA were further classified into low-dose group (LDG, 1.51-5.0 mGy/year, N = 19) and high-dose group (HDG >5.0 mGy/year, N = 18). Basal frequency of micronucleus (MN) was comparable across the three dose groups (NLNRA, LDG and HDG, P = 0.64). Age of the individuals showed a significant effect on the frequency of MN after challenging dose exposures. The mean frequency of MN was significantly lower in elder (>40 years) individuals from HDG of HLNRA as compared to the young (≤40 years) individuals after 1.0 Gy (P < 0.001) and 2.0 Gy (P = 0.002) of challenging doses. However, young and elder individuals within NLNRA and LDG of HLNRA showed similar frequency of MN after the challenging dose exposures. Thus, increased level of chronic low-dose radiation (>5.0 mGy/year) seems to act as a priming dose resulting in the induction of an in vivo radio-adaptive response in elder individuals of the Kerala coast.
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Affiliation(s)
- E N Ramachandran
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - C V Karuppasamy
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - V Anil Kumar
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - D C Soren
- Low Level Radiation Research Section (LLRRS), RB&HSD, Bio-Science Group, BARC, Trombay, Mumbai 400 085, India
| | - P R Vivek Kumar
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - P K M Koya
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - G Jaikrishan
- Low Level Radiation Research Laboratory (LLRRL), Radiation Biology and Health Sciences Division (RB&HSD), Bio-Science Group, Bhabha Atomic Research Centre (BARC), Beach Road, Kollam 691 001, Kerala and
| | - Birajalaxmi Das
- Low Level Radiation Research Section (LLRRS), RB&HSD, Bio-Science Group, BARC, Trombay, Mumbai 400 085, India
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12
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Rastkhah E, Zakeri F, Ghoranneviss M, Rajabpour MR, Farshidpour MR, Mianji F, Bayat M. The cytokinesis-blocked micronucleus assay: dose-response calibration curve, background frequency in the population and dose estimation. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2016; 55:41-51. [PMID: 26507139 DOI: 10.1007/s00411-015-0624-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 10/15/2015] [Indexed: 06/05/2023]
Abstract
An in vitro study of the dose responses of human peripheral blood lymphocytes was conducted with the aim of creating calibrated dose-response curves for biodosimetry measuring up to 4 Gy (0.25-4 Gy) of gamma radiation. The cytokinesis-blocked micronucleus (CBMN) assay was employed to obtain the frequencies of micronuclei (MN) per binucleated cell in blood samples from 16 healthy donors (eight males and eight females) in two age ranges of 20-34 and 35-50 years. The data were used to construct the calibration curves for men and women in two age groups, separately. An increase in micronuclei yield with the dose in a linear-quadratic way was observed in all groups. To verify the applicability of the constructed calibration curve, MN yields were measured in peripheral blood lymphocytes of two real overexposed subjects and three irradiated samples with unknown dose, and the results were compared with dose values obtained from measuring dicentric chromosomes. The comparison of the results obtained by the two techniques indicated a good agreement between dose estimates. The average baseline frequency of MN for the 130 healthy non-exposed donors (77 men and 55 women, 20-60 years old divided into four age groups) ranged from 6 to 21 micronuclei per 1000 binucleated cells. Baseline MN frequencies were higher for women and for the older age group. The results presented in this study point out that the CBMN assay is a reliable, easier and valuable alternative method for biological dosimetry.
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Affiliation(s)
- E Rastkhah
- Islamic Azad University, Science Research Branch, Tehran, Iran
| | - F Zakeri
- Nuclear Science and Technology Research Institute, Tehran, Iran.
- Iran Nuclear Regulatory Authority, Tehran, Iran.
| | - M Ghoranneviss
- Islamic Azad University, Science Research Branch, Tehran, Iran
| | | | | | - F Mianji
- Nuclear Science and Technology Research Institute, Tehran, Iran
- Iran Nuclear Regulatory Authority, Tehran, Iran
| | - M Bayat
- Islamic Azad University, Science Research Branch, Tehran, Iran
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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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Pajic J, Rakic B, Rovcanin B, Jovicic D, Novakovic I, Milovanovic A, Pajic V. Inter-individual variability in the response of human peripheral blood lymphocytes to ionizing radiation: comparison of the dicentric and micronucleus assays. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2015; 54:317-325. [PMID: 25903986 DOI: 10.1007/s00411-015-0596-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
Ionizing radiation can induce a wide range of DNA damage that leads to chromosomal aberrations. Some of those aberrations (dicentrics and micronuclei) are applied in biodosimetry. Biological dosimetry assumes similar radiosensitivity of each donor, but it does not exclude inter-individual variations in radiation susceptibility. Therefore, for biological reasons, it is always challenging to investigate inter-individual variability in response to radiation. For mechanistic reasons, it is also interesting to investigate the correlation between dicentric and micronuclei formation in response to radiation. In this experiment, irradiated blood specimens from 14 healthy male and female donors have been used to evaluate inter-individual variability in response to the genotoxic effects of X-ray radiation, as well as the dose-response relationship and test sensitivity using two endpoints (dicentrics and micronuclei). The results showed similar patterns of cytogenetic biomarker distribution between donors, but differences in the response of some donors at some doses. Data also showed that responses of male donors were better detected using the dicentric test, while for females, micronucleus frequencies were higher in response to the same dose of radiation. No influence of smoking status or age on specific responses was observed. Group variability in response to radiation was evaluated using coefficient of variation for each group of individuals irradiated with the same doses; as the dose increases, group variability becomes substantially lower. Despite sporadic inter-individual variability, trend of radiation-induced changes was similar. Produced calibration curves for both types of damage revealed dicentrics as genetic damage more typical for radiation than micronuclei.
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Affiliation(s)
- Jelena Pajic
- Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Deligradska 29, Belgrade, Serbia,
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Pajic J, Rakic B, Jovicic D, Milovanovic A. Construction of dose response calibration curves for dicentrics and micronuclei for X radiation in a Serbian population. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2014; 773:23-8. [DOI: 10.1016/j.mrgentox.2014.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 07/28/2014] [Accepted: 07/29/2014] [Indexed: 11/26/2022]
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