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Vu TS, Nishijo M, Nishino Y, Vu CT, Nguyen VC, Pham TT, Do NA, Vu NH, Le DC, Dao VN, Dinh VH, Pham NT, Do DT. Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in blood samples from historically herbicide-sprayed areas and rural and industrialized unsprayed areas in Vietnam. CHEMOSPHERE 2023; 326:138331. [PMID: 36958494 DOI: 10.1016/j.chemosphere.2023.138331] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/12/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
We investigated dioxin concentrations in the blood of residents living in areas with different sources of dioxin pollution in Vietnam. A total of 823 individual blood samples were collected in 2014-2015 from residents of 16 provinces in Vietnam who were born between 1972 and 1976, and who lived in rural unsprayed areas (the control area), industrialized unsprayed areas (the industrialized area), and areas in which herbicides were sprayed during the Vietnam War (the sprayed area). After blood collection, pooled samples were obtained by combining 10-25 individual samples by age and sex for each area. A total of 6, 10, and 26 pooled blood samples were obtained for the control area, industrialized area, and sprayed area, respectively. The concentrations of 17 polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans were quantified in each pooled blood sample. The concentrations of TCDD, 1,2,3,7,8,9-HxCDD, 1,2,3,7,8-PeCDF, and OCDF were significantly higher in the sprayed area than in the unsprayed area, which comprised the control and industrialized areas. The toxic equivalents of PCDDs, TCDD, 1,2,3,7,8-PeCDF, and 1,2,3,6,7,8-HxCDF were significantly higher in the sprayed area than in the control area. No significant difference in dioxin concentration was found between the sprayed and industrialized areas after adjusting for sex. The 1,2,3,6,7,8-HxCDF concentration was significantly higher in the industrialized area than in the control area. The findings indicate that there are different dioxin congener blood profiles in residents of industrialized areas and areas in which herbicides were historically sprayed during the Vietnam War.
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Affiliation(s)
- Tung Son Vu
- Department of Epidemiology, Vietnam Military Medical University, Ha Noi, 12108, Viet Nam
| | - Muneko Nishijo
- Department of Public Health and Epidemiology, Kanazawa Medical University, 920-0293, Japan
| | - Yoshikazu Nishino
- Department of Public Health and Epidemiology, Kanazawa Medical University, 920-0293, Japan
| | - Chien Thang Vu
- Ministry of Natural Resources and Environment, Hanoi, 11300, Viet Nam
| | - Van Chuyen Nguyen
- Department of Hygiene, Vietnam Military Medical University, Ha Noi, 12108, Viet Nam
| | - The Tai Pham
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 12108, Ha Noi, Viet Nam
| | - Ngoc Anh Do
- Department of Parasitology, Vietnam Military Medical University, Hanoi, 12108, Viet Nam
| | - Ngoc Hoan Vu
- Department of Epidemiology, Vietnam Military Medical University, Ha Noi, 12108, Viet Nam
| | - Duy Chi Le
- Department of Ultrasound, 103 Military Hospital, Vietnam Military Medical University, Hanoi, 12108, Viet Nam
| | - Van Nhat Dao
- Department of Urology, 103 Military Hospital, Vietnam Military Medical University, 12108, Ha Noi, Viet Nam
| | - Viet Hung Dinh
- Deparment of Psychiatric, 103 Military Hospital, Vietnam Military Medical University, Ha Noi, 12108, Viet Nam
| | - Ngoc Thao Pham
- Department of Functional Diagnosis, 103 Military Hospital, Vietnam Military Medical University, 12108, Ha Noi, Viet Nam.
| | - Duc Thuan Do
- Department of Stroke, 103 Military Hospital, Vietnam Military Medical University, 12108, Ha Noi, Viet Nam.
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Kirsanov KI, Sycheva LP, Lesovaya EA, Zhidkova EM, Vlasova OA, Osipova AV, Lylova ES, Grigorieva DD, Kulakova EM, Solenova LG, Belitsky GA, Mikhaylova IN, Yakubovskaya MG. Buccal Micronucleus Cytome Assay for the Evaluation of Cytogenetic Status of Healthcare Professionals Contacting with Anti-Cancer Drugs. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422050052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Van Manh P, Tai PT, Phuong NM, Nishijo M, Trung DM, Thao PN, Son HA, Van Tuan T, Van Chuyen N, Van Long N, Van Khoi N, Linh NT, Van Luong H, Quyet DB. Serum dioxin concentrations in military workers at three dioxin-contaminated airbases in Vietnam. CHEMOSPHERE 2021; 266:129024. [PMID: 33272665 DOI: 10.1016/j.chemosphere.2020.129024] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 10/15/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
An estimated 91,998,400 L of herbicides were stocked at three US airbases in Vietnam between 1962 and 1971. These herbicides were contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-tetraCDD). In 2017, we sampled blood from 120 male Vietnamese military workers in the three dioxin-contaminated airbases (Bien Hoa, Da Nang, and Phu Cat) and from 20 workers at an uncontaminated airbase. 2,3,7,8-tetraCDD concentrations were highest in samples from Bien Hoa (18.2 pg/g lipid), followed by samples from Da Nang (9.2 pg/g lipid), Phu Cat (3.7 pg/g lipid), and the reference base (2.1 pg/g lipid). In Bien Hoa, 31 of the 50 subjects had blood 2,3,7,8-tetraCDD levels in the range of 10-100 pg/g lipid and four subjects had 2,3,7,8-tetraCDD levels that exceeded 100 pg/g lipid. In Da Nang, almost half of the subjects had blood 2,3,7,8-tetraCDD concentrations in the range of 10-100 pg/g lipid. These findings suggest that military workers at contaminated bases are the population most vulnerable to dioxin exposure, especially at Bien Hoa.
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Affiliation(s)
- Phan Van Manh
- Department of Occupational Medicine, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Pham The Tai
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam.
| | - Nguyen Minh Phuong
- Department of Occupational Medicine, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Muneko Nishijo
- Department of Epidemiology and Public Health, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Do Minh Trung
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Pham Ngoc Thao
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam; Department of Epidemiology and Public Health, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa, 920-0293, Japan
| | - Ho Anh Son
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Tran Van Tuan
- Department of Military Hygiene, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Nguyen Van Chuyen
- Department of Military Hygiene, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Nguyen Van Long
- Department of Military Science, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Nguyen Van Khoi
- Department of Military Science, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Nguyen Tung Linh
- Department of Military Science, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Hoang Van Luong
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
| | - Do Ba Quyet
- Institute of Biomedicine and Pharmacy, Vietnam Military Medical University, 160 Phung Hung, Ha Dong, Ha Noi, Viet Nam
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Kuzmina NS, Luong TM, Rubanovich AV. Changes in DNA Methylation Induced by Dioxins and Dioxin-Like Compounds as Potential Predictor of Disease Risk. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795420100063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nwanaji-Enwerem JC, Jenkins TG, Colicino E, Cardenas A, Baccarelli AA, Boyer EW. Serum dioxin levels and sperm DNA methylation age: Findings in Vietnam war veterans exposed to Agent Orange. Reprod Toxicol 2020; 96:27-35. [PMID: 32522586 DOI: 10.1016/j.reprotox.2020.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/31/2020] [Accepted: 06/03/2020] [Indexed: 02/07/2023]
Abstract
Exposure to dioxin, a known endocrine disruptor and carcinogen, is associated with poor reproductive outcomes. Yet, few studies have explored the role of DNA methylation in these relationships. Utilizing a publicly available dataset from 37 male Air Force Health Study participants exposed to dioxin-contaminated Agent Orange during the Vietnam war, we cross-sectionally examined the relationship of serum dioxin levels with a novel DNA methylation-based measure of sperm age (DNAm-agesperm). DNAm-agesperm was calculated using CpG sites on the Illumina HumanMethylation450 BeadChip. We estimated associations of dioxin levels with DNAm-agesperm using linear regression models adjusted for chronological age, body mass index, and smoking status. Chronological age was highly correlated with DNAmagesperm (r = 0.80). In fully-adjusted linear models, a one percent increase in serum dioxin levels was significantly associated with a 0.0126-year (i.e. 4.6-day) increase in DNAm-agesperm (95%CI: 0.003, 0.022, p = 0.01). Further analyses demonstrated significant negative associations of dioxin levels (β = -0.0005, 95%CI: -0.0010, 0.00004, P = 0.03) and DNAm-agesperm (β = -0.02, 95%CI: -0.04, -0.001, P = 0.03) with methylation levels of FOXK2 - a gene previously reported to be hypomethylated in infertile men. In sum, we demonstrate associations of dioxin with increased methylation aging of sperm. DNAm-agesperm may provide utility for understanding how dioxin levels impact sperm health and potentially male reproductive capacity in human population studies. Moreover, our pilot study contributes further evidence that some environmental toxicants are associated with methylation aging. Additional studies are necessary to confirm these findings, and better characterize dioxin and sperm methylation relationships with male reproductive health.
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Affiliation(s)
- Jamaji C Nwanaji-Enwerem
- Belfer Center for Science and International Affairs, Harvard Kennedy School of Government, Department of Environmental Health, Harvard T.H. Chan School of Public Health, and MD/PhD Program, Harvard Medical School, Boston, MA, USA.
| | - Timothy G Jenkins
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT, USA
| | - Elena Colicino
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Columbia Mailman School of Public Health, New York, NY, USA
| | - Edward W Boyer
- Division of Medical Toxicology, Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Roumak VS, Levenkova ES, Umnova NV, Popov VS, Turbabina KA, Shelepchikov AA. The content of dioxins and furans in soils, bottom sediments of water bodies, and tissues of small mammals near the landfill site with municipal solid wastes (Moscow, Russia). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:29379-29386. [PMID: 30121772 DOI: 10.1007/s11356-018-2933-y] [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: 01/15/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
For the first time, the levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were characterized in the tissues of wild small mammals living in contaminated sites near a municipal solid waste landfill (Moscow, Russia). The Ural field mice Sylvaemus uralensis, the bank voles Clethrionomys glareolus, and the common shrews Sorex araneus were trapped at 1- and 5-km distances from the landfield "Salariyevo." High-resolution chromatography-mass spectrometry was used to measure the levels of 17 PCDD/Fs congeners in the animal organisms and natural objects (soils, bottom sediments). The values of the total toxic equivalencies (WHO-TEQ05) for animals were many times higher than those for soils and bottom sediments. The octo-substituted congeners dominated in the samples from the habitat, whereas the highly toxic 2,3,7,8-substituted ones - in the mammalian tissues. The levels of WHO-TEQ05 were comparable in the soil samples collected at 1- and 5-km distances from the dump body. The levels of WHO-TEQ05 in tissues of mammals caught 1 km from the dump were much higher than those of the distant territory inhabitants. The maximum WHO-TEQ05 levels were found in the shrews, and this has been considered in terms of nutrition characteristics. The data obtained will be used to assess the risks of chronic exposure to low doses of PCDD/Fs contaminating the environment near landfills.
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Affiliation(s)
- Vladimir S Roumak
- A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia
- Faculty of Biology, Moscow State University, Moscow, Russia
| | - Elena S Levenkova
- A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia
- Faculty of Biology, Moscow State University, Moscow, Russia
| | - Nataliya V Umnova
- A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia.
| | - Vladimir S Popov
- Faculty of Fundamental Medicine, Moscow State University, Moscow, Russia
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