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Zhang L, Chu J, Xia B, Xiong Z, Zhang S, Tang W. Health Effects of Particulate Uranium Exposure. TOXICS 2022; 10:575. [PMID: 36287855 PMCID: PMC9610560 DOI: 10.3390/toxics10100575] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/29/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Uranium contamination has become a nonnegligible global health problem. Inhalation of particulate uranium is one of the predominant routes of occupational and environmental exposure. Uranium particle is a complex two-phase flow of matter that is both particulate and flowable. This particular physicochemical property may alter its biological activity. Epidemiological studies from occupationally exposed populations in the uranium industry have concluded that there is a possible association between lung cancer risk and uranium exposure, while the evidence for the risk of other tumors is not sufficient. The toxicological effects of particulate uranium exposure to animals have been shown in laboratory tests to focus on respiratory and central nervous system damage. Fibrosis and tumors can occur in the lung tissue of the respiratory tract. Uranium particles can also induce a concentration-dependent increase in cytotoxicity, targeting mitochondria. The understanding of the health risks and potential toxicological mechanisms of particulate uranium contamination is still at a preliminary stage. The diversity of particle parameters has limited the in-depth exploration. This review summarizes the current evidence on the toxicology of particulate uranium and highlights the knowledge gaps and research prospects.
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Cordova-Marks FM, Carson WO, Monetathchi A, Little A, Erdrich J. Native and Indigenous Populations and Gastric Cancer: A Worldwide Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:5437. [PMID: 35564831 PMCID: PMC9100179 DOI: 10.3390/ijerph19095437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/27/2022] [Indexed: 02/01/2023]
Abstract
Gastric cancer is a worldwide concern, particularly for Indigenous populations who face greater disparities in healthcare. With decreased access to screening and critical treatment delays, this group is experiencing adverse health effects. To determine what factors drive these disparities, a systematic review was performed in PubMed. This revealed a lack of research on gastric cancer specific to this population. The literature primarily focused on subset analyses and biological aspects with sparse focus on determinants of health. The results informed this presentation on factors related to Indigenous gastric cancer, which are influenced by colonialism. Indigenous populations encounter high rates of food shortage, exposure to harmful environmental agents, structural racism in the built environment, H. pylori, and compromised healthcare quality as an effect of colonialism, which all contribute to the gastric cancer burden. Putting gastric cancer into a cultural context is a potential means to respond to colonial perspectives and their negative impact on Indigenous patients. The objective of this manuscript is to examine the current state of gastric cancer literature from a global perspective, describe what is currently known based on this literature review, supplemented with additional resources due to lack of published works in PubMed, and to present a model of gastric cancer through the lens of a modified medicine wheel as a potential tool to counter colonial healthcare perspectives and to honor Indigenous culture.
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Affiliation(s)
- Felina M. Cordova-Marks
- Department of Health Promotion Sciences, Zuckerman College of Public Health, University of Arizona, Tucson, AZ 85724, USA;
| | - William O. Carson
- Department of Health Promotion Sciences, Zuckerman College of Public Health, University of Arizona, Tucson, AZ 85724, USA;
| | - Angela Monetathchi
- Cellular Molecular Medicine, College of Medicine, University of Arizona, Tucson, AZ 85724, USA;
| | | | - Jennifer Erdrich
- Department of Surgery, College of Medicine, University of Arizona, Tucson, AZ 85724, USA;
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Akbari A, Ashtari S, Tabaiean SP, Mehrdad‐Majd H, Farsi F, Shojaee S, Agah S. Overview of epidemiological characteristics, clinical features, and risk factors of gastric cancer in Asia‐Pacific region. Asia Pac J Clin Oncol 2022; 18:493-505. [DOI: 10.1111/ajco.13654] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/20/2021] [Indexed: 01/01/2023]
Affiliation(s)
- Abolfazl Akbari
- Colorectal Research Center Iran University of Medical Sciences Tehran Iran
| | - Sara Ashtari
- Gastroenterology and Live Diseases Research Center Research Institute for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Seidamir Pasha Tabaiean
- Colorectal Research Center Iran University of Medical Sciences Tehran Iran
- Department of Internal Medicine School of Medicine Iran University of Medical Sciences Tehran Iran
| | - Hassan Mehrdad‐Majd
- Cancer Molecular Pathology Research Center Mashhad University of Medical Sciences Mashhad Iran
| | - Farnaz Farsi
- Department of Nutrition School of public health Iran University of Medical Sciences Tehran Iran
| | - Sajad Shojaee
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center Research Institute for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Shahram Agah
- Colorectal Research Center Iran University of Medical Sciences Tehran Iran
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Lee D, Lee WJ, Jin YW, Kim J, Park S, Park S, Seo S. Estimation of the historical radiation dose of Korean radiation workers, 1961-1983. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2021; 41:1005-1017. [PMID: 34587594 DOI: 10.1088/1361-6498/ac2b8b] [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: 06/28/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
Accurate dosimetry plays a key role in evaluating the radiation-induced health risks of radiation workers. The National Dose Registry in Korea contains the dose records of radiation workers in nuclear-related occupations since 1984. Thus, radiation doses for workers before 1984 are often sparse or missing. This study aimed to estimate the historical radiation dose before 1984 for radiation workers in Korea based on dose reconstruction models. The dose reconstruction models were derived from the nationwide self-administered questionnaire survey and the personal badge doses for workers in the cohort of the Korean Radiation Worker Study. The mean estimated annual doses between 1984 and 2016 from the dose reconstruction model were 4.67-0.6 mSv, which closely matched the reported doses of 4.51-0.43 mSv. The mean estimated annual doses between 1961 and 1983 based on the exposure scenarios developed by factors associated with radiation doses ranged from 11.08 to 4.82 mSv. The mean estimated annual doses of individuals in the cohort from 1961 to 1983 ranged from 11.15 to 4.88 mSv. Although caution needs to be exercised in the interpretation of these estimations due to uncertainty owed to the nature of extrapolation beyond the range of observed data, this study offers a sense of the radiation doses for workers during Korea's early period of radiation-related activities, which can be a useful piece of information for radiation-induced health risk assessments.
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Affiliation(s)
- Dalnim Lee
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Won Jin Lee
- Department of Preventive Medicine, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul, Republic of Korea
| | - Young Woo Jin
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Jiyeong Kim
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Soojin Park
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Sunhoo Park
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
| | - Songwon Seo
- National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Republic of Korea
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Richardson DB, Rage E, Demers PA, Do MT, DeBono N, Fenske N, Deffner V, Kreuzer M, Samet J, Wiggins C, Schubauer-Berigan MK, Kelly-Reif K, Tomasek L, Zablotska LB, Laurier D. Mortality among uranium miners in North America and Europe: the Pooled Uranium Miners Analysis (PUMA). Int J Epidemiol 2021; 50:633-643. [PMID: 33232447 DOI: 10.1093/ije/dyaa195] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The Pooled Uranium Miners Analysis (PUMA) study draws together information from cohorts of uranium miners from Canada, the Czech Republic, France, Germany and the USA. METHODS Vital status and cause of death were ascertained and compared with expectations based upon national mortality rates by computing standardized mortality ratios (SMRs) overall and by categories of time since first hire, calendar period of first employment and duration of employment as a miner. RESULTS There were 51 787 deaths observed among 118 329 male miners [SMR = 1.05; 95% confidence interval (CI): 1.04, 1.06]. The SMR was elevated for all cancers (n = 16 633, SMR = 1.23; 95% CI: 1.21, 1.25), due primarily to excess mortality from cancers of the lung (n = 7756, SMR = 1.90; 95% CI: 1.86, 1.94), liver and gallbladder (n = 549, SMR = 1.15; 95% CI: 1.06, 1.25), larynx (n = 229, SMR = 1.10; 95% CI: 0.97, 1.26), stomach (n = 1058, SMR = 1.08; 95% CI: 1.02, 1.15) and pleura (n = 39, SMR = 1.06; 95% CI: 0.75, 1.44). Lung-cancer SMRs increased with duration of employment, decreased with calendar period and persisted with time since first hire. Among non-malignant causes, the SMR was elevated for external causes (n = 3362, SMR = 1.41; 95% CI: 1.36, 1.46) and respiratory diseases (n = 4508, SMR = 1.32; 95% CI: 1.28, 1.36), most notably silicosis (n = 814, SMR = 13.56; 95% CI: 12.64, 14.52), but not chronic obstructive pulmonary disease (n = 1729, SMR = 0.98; 95% CI: 0.93, 1.02). CONCLUSIONS Whereas there are important obstacles to the ability to detect adverse effects of occupational exposures via SMR analyses, PUMA provides evidence of excess mortality among uranium miners due to a range of categories of cause of death. The persistent elevation of SMRs with time since first hire as a uranium miner underscores the importance of long-term follow-up of these workers.
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Affiliation(s)
| | - E Rage
- Institute for Radiological Protection and Nuclear Safety (IRSN), PSE-SANTE, SESANE, Fontenay-aux-Roses, France
| | - P A Demers
- Occupational Cancer Research Centre, Toronto, Canada
| | - M T Do
- Occupational Cancer Research Centre, Toronto, Canada
| | - N DeBono
- Occupational Cancer Research Centre, Toronto, Canada
| | - N Fenske
- Federal Office for Radiation Protection, Neuherberg, Germany
| | - V Deffner
- Federal Office for Radiation Protection, Neuherberg, Germany
| | - M Kreuzer
- Federal Office for Radiation Protection, Neuherberg, Germany
| | - J Samet
- Colorado School of Public Health, Aurora, CO, USA
| | - C Wiggins
- University of New Mexico, Albuquerque, NM, USA
- New Mexico Tumor Registry, Albuquerque, NM, USA
| | - M K Schubauer-Berigan
- National Institute for Occupational Safety and Health, Cincinnati, OH, USA
- International Agency for Research on Cancer, Lyon, France
| | - K Kelly-Reif
- National Institute for Occupational Safety and Health, Cincinnati, OH, USA
| | - L Tomasek
- Radiation Protection Institute, Prague, Czech Republic
| | - L B Zablotska
- University of California, San Francisco, San Francisco, CA, USA
| | - D Laurier
- Institute for Radiological Protection and Nuclear Safety (IRSN), PSE-SANTE, SESANE, Fontenay-aux-Roses, France
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Kreuzer M, Deffner V, Schnelzer M, Fenske N. Mortality in Underground Miners in a Former Uranium Ore Mine–Results of a Cohort Study Among Former Employees of Wismut AG in Saxony and Thuringia. DEUTSCHES ARZTEBLATT INTERNATIONAL 2021; 118:41-48. [PMID: 33759743 PMCID: PMC8182779 DOI: 10.3238/arztebl.m2021.0001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/07/2020] [Accepted: 07/13/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND From 1946 to 1990, more than 400 000 people were employed by Wismut AG, a Soviet/Soviet-German corporation (German abbreviation: SAG/ SDAG), in the East German states of Saxony and Thuringia. In the early years in particular, employees were exposed to large amounts of radon and respirable crystalline silica. METHODS In a cohort of 35 204 former underground employees of Wismut AG, mortality was analyzed in comparison to the general male population of East Germany, and the pertaining standardized mortality ratios (SMRs) were calculated. RESULTS 18 510 persons in the study cohort died in the follow-up period 1960-2013. Mortality from lung cancer was 2.36 higher in the study cohort than in the general population (95% confidence interval, [2.28; 2.45]); the associated SMRs rose markedly with increasing radon exposure. Mortality from silicosis and other types of pneumoconiosis was elevated by a factor of 22.62 [21.20; 24.11], and the associated SMRs rose exponentially with increasing exposure to respirable crystalline silica. Mortality from both of these causes was still markedly elevated more than 20 years after Wismut AG had ceased its activities. Mortality from a wide range of other diseases was elevated as well, with the following SMRs: stomach cancer, 1.28 [1.17; 1.40]; liver cancer, 1.34 [1.15; 1.55]; all tumors other than lung cancer, 1.06 [1.02; 1.09]; infections, 1.18 [1.01; 1.38]; cerebrovascular diseases, 1.33 [1.26; 1.41]; and influenza/pneumonia, 1.13 [1.01; 1.27]. Mortality from a small number of other causes was found to be markedly lowered in the study cohort (mental illness, renal diseases, and nervous system diseases). The role of occupational risk factors, lifestyle differences and other reasons for the latter results is unclear. CONCLUSION Underground miners employed by Wismut AG displayed marked excess mortality due to silicosis/other pneumoconiosis and lung cancer. The contribution of individual occupational risk factors for these and other causes of death with increased SMR are being further investigated in analyses within the study cohort.
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Affiliation(s)
- Michaela Kreuzer
- Department of Effects and Risks of Ionizing and Non-Ionizing Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
| | - Veronika Deffner
- Department of Effects and Risks of Ionizing and Non-Ionizing Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
| | - Maria Schnelzer
- Department of Effects and Risks of Ionizing and Non-Ionizing Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
| | - Nora Fenske
- Department of Effects and Risks of Ionizing and Non-Ionizing Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
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Semenova Y, Pivina L, Zhunussov Y, Zhanaspayev M, Chirumbolo S, Muzdubayeva Z, Bjørklund G. Radiation-related health hazards to uranium miners. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34808-34822. [PMID: 32638305 DOI: 10.1007/s11356-020-09590-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Concerns on health effects from uranium (U) mining still represent a major issue of debate. Any typology of active job in U mines is associated with exposure to U and its decay products, such as radon (Rn), thorium (Th), and radium (Ra) and its decay products with alpha-emission and gamma radiation. Health effects in U miners have been investigated in several cohort studies in the USA, Canada, Germany, the Czech Republic, and France. While public opinion is particularly addressed to pay attention to the safety of nuclear facilities, health hazard associated with mining is poorly debated. According to the many findings from cohort studies, the most significant positive dose-response relationship was found between occupational U exposure and lung cancer. Other types of tumors associated with occupational U exposure are leukemia and lymphoid cancers. Furthermore, it was found increased but not statistically significant death risk in U miners due to cancers in the liver, stomach, and kidneys. So far, there has not been found a significant association between U exposure and increased cardiovascular mortality in U miners. This review tries to address the current state of the art of these studies.
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Affiliation(s)
- Yuliya Semenova
- Semey Medical University, Semey, Kazakhstan
- CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, Semey, Kazakhstan
| | - Lyudmila Pivina
- Semey Medical University, Semey, Kazakhstan
- CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, Semey, Kazakhstan
| | | | | | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
- CONEM Scientific, Verona, Italy
| | | | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Toften 24, 8610, Mo i Rana, Norway.
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Guo C, Chan TC, Teng YC, Lin C, Bo Y, Chang LY, Lau AKH, Tam T, Wong MCS, Qian Lao X. Long-term exposure to ambient fine particles and gastrointestinal cancer mortality in Taiwan: A cohort study. ENVIRONMENT INTERNATIONAL 2020; 138:105640. [PMID: 32179321 DOI: 10.1016/j.envint.2020.105640] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/07/2020] [Accepted: 03/04/2020] [Indexed: 05/21/2023]
Abstract
BACKGROUND Information on the association between long-term exposure to PM2.5 and gastrointestinal cancer mortality is scarce. OBJECTIVES This study investigated the association between long-term exposure to PM2.5 and deaths from gastrointestinal cancer and its subtypes in adults in Taiwan. METHODS A total of 385,650 Taiwanese adults (≥18 years old) jointed a standard medical examination program between 2001 and 2014 and were followed up until 2016. Their vital data were obtained from the National Death Registry maintained by the Ministry of Health and Welfare in Taiwan. We estimated the ambient PM2.5 concentration at individual's address utilising a satellite-based spatiotemporal model at a resolution of 1 km2. Cox proportional hazard regression model was used to investigate the associations between ambient PM2.5 and deaths from gastrointestinal, stomach, colorectal and liver cancers. RESULTS We found that each 10 µg/m3 increase in PM2.5 was associated with an increased hazard risk (HR) of 1.09 (95% confidence interval (CI): 1.03-1.16) and 1.13 (95%CI: 1.02-1.24) in deaths from gastrointestinal and liver cancers, respectively. The association between PM2.5 and death from colorectal cancer was marginally statistically significant [HR: 1.13 (95%CI: 1.00-1.26)]. We did not find significant associations between PM2.5 and mortality from stomach cancer. CONCLUSIONS Long-term exposure to ambient PM2.5 was associated with an increased risk of deaths from gastrointestinal cancers, liver cancer and also potentially colorectal cancer. Air pollution control strategies are necessary to reduce the burden of gastrointestinal cancer.
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Affiliation(s)
- Cui Guo
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Ta-Chien Chan
- Research Center for Humanities and Social Sciences, Academia Sinica, Taiwan; Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Yung-Chu Teng
- Research Center for Humanities and Social Sciences, Academia Sinica, Taiwan
| | - Changqing Lin
- Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong Special Administrative Region; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong Special Administrative Region
| | - Yacong Bo
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Ly-Yun Chang
- Institute of Sociology, Academia Sinica, Taiwan; Gratia Christian College, Hong Kong Special Administrative Region
| | - Alexis K H Lau
- Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong Special Administrative Region; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong Special Administrative Region
| | - Tony Tam
- Department of Sociology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Martin C S Wong
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Xiang Qian Lao
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; Shenzhen Research Institute of the Chinese University of Hong Kong, Shenzhen, China.
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Yin J, Wu X, Li S, Li C, Guo Z. Impact of environmental factors on gastric cancer: A review of the scientific evidence, human prevention and adaptation. J Environ Sci (China) 2020; 89:65-79. [PMID: 31892402 DOI: 10.1016/j.jes.2019.09.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Globally, gastric cancer (GC) ranks fifth in prevalence and third in fatalities, and shows a distinct geographical distribution in morbidity and mortality. Such a spatial pattern indicates that environmental factors could be an important contributor to GC. We reviewed a total of 135 relevant peer-reviewed articles and other literature published 1936-2019 to investigate the scientific evidence concerning the effects of environmental factors on GC worldwide. Environmental factors affect GC from the aspects of water, soil, air, radiation, and geology. Risk factors identified include water type, water pollution, water hardness, soil type, soil pollution, soil element content, climate change, air pollution, radiation, altitude, latitude, topography, and lithology; and most of them have an adverse impact on GC. Furthermore, we found that their effects followed five common rules: (1) the leading environmental factors that affect GC incidence and mortality vary by region, (2) the same environmental factors may have different effects on GC in different regions, (3) some different environmental factors have similar effects on GC in essence, (4) different environmental factors often interact to have combined or synergistic effects on GC, and (5) environmental factors can affect human factors to have an impact on GC. Environmental factors have a great impact on GC. Human beings may prevent GC by controlling carcinogenic factors, screening high-risk populations and providing symptomatic and rehabilitative treatments. Furthermore, adaptation measures are recommended to reduce GC risk on private and public levels. Future studies should transcend existing empirical studies to develop causal relationship models and focus on vulnerable population analysis.
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Affiliation(s)
- Jie Yin
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
| | - Xiaoxu Wu
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China.
| | - Suping Li
- The Second People's Hospital of Lanzhou City, Lanzhou 730046, China
| | - Chenlu Li
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
| | - Zhiyi Guo
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
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Rage E, Richardson DB, Demers PA, Do M, Fenske N, Kreuzer M, Samet J, Wiggins C, Schubauer-Berigan MK, Kelly-Reif K, Tomasek L, Zablotska LB, Laurier D. PUMA - pooled uranium miners analysis: cohort profile. Occup Environ Med 2020; 77:194-200. [PMID: 32005674 PMCID: PMC8663280 DOI: 10.1136/oemed-2019-105981] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 12/02/2019] [Accepted: 12/21/2019] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Epidemiological studies of underground miners have provided clear evidence that inhalation of radon decay products causes lung cancer. Moreover, these studies have served as a quantitative basis for estimation of radon-associated excess lung cancer risk. However, questions remain regarding the effects of exposure to the low levels of radon decay products typically encountered in contemporary occupational and environmental settings on the risk of lung cancer and other diseases, and on the modifiers of these associations. These issues are of central importance for estimation of risks associated with residential and occupational radon exposures. METHODS The Pooled Uranium Miner Analysis (PUMA) assembles information on cohorts of uranium miners in North America and Europe. Data available include individual annual estimates of exposure to radon decay products, demographic and employment history information on each worker and information on vital status, date of death and cause of death. Some, but not all, cohorts also have individual information on cigarette smoking, external gamma radiation exposure and non-radiological occupational exposures. RESULTS The PUMA study represents the largest study of uranium miners conducted to date, encompassing 124 507 miners, 4.51 million person-years at risk and 54 462 deaths, including 7825 deaths due to lung cancer. Planned research topics include analyses of associations between radon exposure and mortality due to lung cancer, cancers other than lung, non-malignant disease, modifiers of these associations and characterisation of overall relative mortality excesses and lifetime risks. CONCLUSION PUMA provides opportunities to evaluate new research questions and to conduct analyses to assess potential health risks associated with uranium mining that have greater statistical power than can be achieved with any single cohort.
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Affiliation(s)
- Estelle Rage
- Institute for Radiological Protection and Nuclear Safety (IRSN), PSE-SANTE, SESANE, Fontenay-aux-Roses, France
| | | | | | - Minh Do
- Cancer Care Ontario, Toronto, Ontario, Canada
| | - Nora Fenske
- Federal Office for Radiation Protection, Department of Radiation Protection and Health, Neuherberg, Germany
| | - Michaela Kreuzer
- Federal Office for Radiation Protection, Department of Radiation Protection and Health, Neuherberg, Germany
| | | | - Charles Wiggins
- University of New Mexico, Albuquerque, New Mexico, USA
- New Mexico Tumor Registry, Albuquerque, New Mexico, USA
| | - Mary K Schubauer-Berigan
- International Agency for Research on Cancer, Lyon, France
- National Institute for Occupational Safety and Health, Cincinnati, Ohio, USA
| | - Kaitlin Kelly-Reif
- National Institute for Occupational Safety and Health, Cincinnati, Ohio, USA
| | | | - Lydia B Zablotska
- University of California, San Francisco, San Francisco, California, USA
| | - Dominique Laurier
- Institute for Radiological Protection and Nuclear Safety (IRSN), PSE-SANTE, SESANE, Fontenay-aux-Roses, France
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11
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Fenske N, Deffner V, Schnelzer M, Sobotzki C, Kreuzer M. Mortality from cancer (other than lung) and radon exposure in German uranium miners, 1946–2013. BIO WEB OF CONFERENCES 2019. [DOI: 10.1051/bioconf/20191404005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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12
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Turner MC, Krewski D, Diver WR, Pope CA, Burnett RT, Jerrett M, Marshall JD, Gapstur SM. Ambient Air Pollution and Cancer Mortality in the Cancer Prevention Study II. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:087013. [PMID: 28886601 PMCID: PMC5783657 DOI: 10.1289/ehp1249] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 03/31/2017] [Accepted: 03/31/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND The International Agency for Research on Cancer classified both outdoor air pollution and airborne particulate matter as carcinogenic to humans (Group 1) for lung cancer. There may be associations with cancer at other sites; however, the epidemiological evidence is limited. OBJECTIVE The aim of this study was to clarify whether ambient air pollution is associated with specific types of cancer other than lung cancer by examining associations of ambient air pollution with nonlung cancer death in the Cancer Prevention Study II (CPS-II). METHODS Analysis included 623,048 CPS-II participants who were followed for 22 y (1982-2004). Modeled estimates of particulate matter with aerodynamic diameter <2.5µm (PM2.5) (1999-2004), nitrogen dioxide (NO2) (2006), and ozone (O3) (2002-2004) concentrations were linked to the participant residence at enrollment. Cox proportional hazards models were used to estimate associations per each fifth percentile-mean increment with cancer mortality at 29 anatomic sites, adjusted for individual and ecological covariates. RESULTS We observed 43,320 nonlung cancer deaths. PM2.5 was significantly positively associated with death from cancers of the kidney {adjusted hazard ratio (HR) per 4.4 μg/m3=1.14 [95% confidence interval (CI): 1.03, 1.27]} and bladder [HR=1.13 (95% CI: 1.03, 1.23)]. NO2 was positively associated with colorectal cancer mortality [HR per 6.5 ppb=1.06 (95% CI: 1.02, 1.10). The results were similar in two-pollutant models including PM2.5 and NO2 and in three-pollutant models with O3. We observed no statistically significant positive associations with death from other types of cancer based on results from adjusted models. CONCLUSIONS The results from this large prospective study suggest that ambient air pollution was not associated with death from most nonlung cancers, but associations with kidney, bladder, and colorectal cancer death warrant further investigation. https://doi.org/10.1289/EHP1249.
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Affiliation(s)
- Michelle C Turner
- McLaughlin Centre for Population Health Risk Assessment, University of Ottawa , Ottawa, Canada
- Barcelona Institute for Global Health (ISGlobal) , Barcelona, Spain
- Universitat Pompeu Fabra (UPF) , Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP) , Madrid, Spain
| | - Daniel Krewski
- McLaughlin Centre for Population Health Risk Assessment, University of Ottawa , Ottawa, Canada
- School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa , Ottawa, Canada
| | - W Ryan Diver
- Epidemiology Research Program, American Cancer Society , Atlanta, Georgia, USA
| | - C Arden Pope
- Department of Economics, Brigham Young University , Provo, Utah, USA
| | | | - Michael Jerrett
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California Los Angeles , Los Angeles, California, USA
| | - Julian D Marshall
- Department of Civil and Environmental Engineering, University of Washington , Seattle, Washington, USA
| | - Susan M Gapstur
- Epidemiology Research Program, American Cancer Society , Atlanta, Georgia, USA
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ZHAO XUANZHONG, WANG FENG, HOU MINGXING. Expression of stem cell markers nanog and PSCA in gastric cancer and its significance. Oncol Lett 2016; 11:442-448. [PMID: 26870231 PMCID: PMC4727111 DOI: 10.3892/ol.2015.3884] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 07/16/2015] [Indexed: 12/14/2022] Open
Abstract
The present study aimed to determine the expression of stem cell markers Nanog compared with PSCA in gastric cancer tissues and adjacent normal tissues, and to investigate the association between tumor stem cells and initiation, progression, metastasis, and prognosis of gastric cancer. One hundred chemotherapy- and radiotherapy-naive patients with pathologically confirmed gastric cancer were enrolled from the General Surgery Department and Surgical Oncology Department of the Affiliated Hospital of Inner Mongolia Medical University (Hohhot, P.R. China), between October 2011 and June 2013. Surgically resected specimens of cancer tissues and adjacent normal tissues (>5 cm from the boundary of cancerous component) were collected. The mRNA expression levels of Nanog and PSCA in those tissues was determined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The correlation between the expression of stem cell markers Nanog and PSCA in gastric cancer tissues and clinicopathological factors was analyzed. The qPCR results demonstrated that the relative expression of Nanog was increased in gastric cancer tissues compared with in the adjacent tissues (P<0.05); and relative expression of PSCA was reduced in gastric cancer tissues compared with adjacent tissues (P<0.05). The expression of Nanog and PSCA in gastric cancer tissues was associated with tumor differentiation. The expression of Nanog was increased in poorly-differentiated and undifferentiated tumors compared with moderately- and well-differentiated tumors (P<0.05). The expression of PSCA was reduced in poorly differentiated and undifferentiated tumors compared with moderately- and well-differentiated tumors (P<0.05). However, the expression of Nanog and PSCA was not associated with age, gender, tumor size, TNM stage, depth of invasion, or lymph node metastasis. Therefore, Nanog and PSCA may have potential as molecular markers to reflect the differentiation status of gastric cancer.
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Affiliation(s)
- XUANZHONG ZHAO
- Department of General Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010059, P.R. China
| | - FENG WANG
- Department of General Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010059, P.R. China
| | - MINGXING HOU
- Department of General Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010059, P.R. China
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14
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Walsh L, Grosche B, Schnelzer M, Tschense A, Sogl M, Kreuzer M. A review of the results from the German Wismut uranium miners cohort. RADIATION PROTECTION DOSIMETRY 2015; 164:147-53. [PMID: 25267854 DOI: 10.1093/rpd/ncu281] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 08/09/2014] [Indexed: 05/27/2023]
Abstract
The Wismut cohort is currently the largest single study on the health risks associated with occupational exposures to ionising radiation and dust accrued during activities related to uranium mining. The cohort has ∼59 000 male workers, first employed between 1946 and 1989, at the Wismut Company in Germany. The main effect is a statistically significant increase in mortality from lung cancer with both increasing cumulative radon exposure and silica dust exposure. Risks for cancers of the extrathoracic airways, all extra-pulmonary cancers and cardiovascular diseases associated with radiation exposures have been evaluated. Cohort mortality rates for some other cancer sites, stomach and liver, are statistically significantly increased in relation to the general population, but not statistically significantly related to occupational exposures. No associations between leukaemia mortality and occupational doses of ionising radiation were found.
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Affiliation(s)
- L Walsh
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - B Grosche
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - M Schnelzer
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - A Tschense
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - M Sogl
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - M Kreuzer
- Federal Office for Radiation Protection, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
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Nagini S. Carcinoma of the stomach: A review of epidemiology, pathogenesis, molecular genetics and chemoprevention. World J Gastrointest Oncol 2012; 4:156-69. [PMID: 22844547 PMCID: PMC3406280 DOI: 10.4251/wjgo.v4.i7.156] [Citation(s) in RCA: 311] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 06/04/2012] [Accepted: 06/12/2012] [Indexed: 02/05/2023] Open
Abstract
Carcinoma of the stomach is still the second most common cause of cancer death worldwide, although the incidence and mortality have fallen dramatically over the last 50 years in many regions. The incidence of gastric cancer varies in different parts of the world and among various ethnic groups. Despite advances in diagnosis and treatment, the 5-year survival rate of stomach cancer is only 20 per cent. Stomach cancer can be classified into intestinal and diffuse types based on epidemiological and clinicopathological features. The etiology of gastric cancer is multifactorial and includes both dietary and nondietary factors. The major diet-related risk factors implicated in stomach cancer development include high content of nitrates and high salt intake. Accumulating evidence has implicated the role of Helicobacter pylori (H. pylori) infection in the pathogenesis of gastric cancer. The development of gastric cancer is a complex, multistep process involving multiple genetic and epigenetic alterations of oncogenes, tumor suppressor genes, DNA repair genes, cell cycle regulators, and signaling molecules. A plausible program for gastric cancer prevention involves intake of a balanced diet containing fruits and vegetables, improved sanitation and hygiene, screening and treatment of H. pylori infection, and follow-up of precancerous lesions. The fact that diet plays an important role in the etiology of gastric cancer offers scope for nutritional chemoprevention. Animal models have been extensively used to analyze the stepwise evolution of gastric carcinogenesis and to test dietary chemopreventive agents. Development of multitargeted preventive and therapeutic strategies for gastric cancer is a major challenge for the future.
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Affiliation(s)
- Siddavaram Nagini
- Siddavaram Nagini, Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar-608 002, Tamil Nadu, India
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