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Negro Silva LF, Makhani K, Lemaire M, Lemarié CA, Plourde D, Bolt AM, Chiavatti C, Bohle DS, Lehoux S, Goldberg MS, Mann KK. Sex-Specific Effects of Prenatal and Early Life Inorganic and Methylated Arsenic Exposure on Atherosclerotic Plaque Development and Composition in Adult ApoE-/- Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:57008. [PMID: 34014776 PMCID: PMC8136521 DOI: 10.1289/ehp8171] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/26/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Epidemiologic studies indicate that early life arsenic exposures are linked to an increased risk of cardiovascular diseases. Different oxidation and methylation states of arsenic exist in the environment and are formed in vivo via the action of arsenic (+3 oxidation state) methyltransferase (As3MT). Methylated arsenicals are pro-atherogenic postnatally, but pre- and perinatal effects are unclear. This is particularly important because methylated arsenicals are known to cross the placenta. OBJECTIVES We tested the effects of early life exposure to inorganic and methylated arsenicals on atherosclerotic plaque formation and its composition in apolipoprotein E knock-out (apoE-/-) mice and evaluated whether apoE-/- mice lacking As3MT expression were susceptible to this effect. METHODS We exposed apoE-/- or apoE-/-/As3MT-/- mice to 200 ppb inorganic or methylated arsenic in the drinking water from conception to weaning and assessed atherosclerotic plaques in the offspring at 18 wk of age. Mixed regression models were used to estimate the mean difference in each outcome relative to controls, adjusting for sex and including a random effects term to account for within-litter clustering. RESULTS Early life exposure to inorganic arsenic, and more profoundly methylated arsenicals, resulted in significantly larger plaques in the aortic arch and sinus in both sexes. Lipid levels in these plaques were higher without a substantial difference in macrophage numbers. Smooth muscle cell content was not altered, but collagen content was lower. Importantly, there were sex-specific differences in these observations, where males had higher lipids and lower collagen in the plaque, but females did not. In mice lacking As3MT, arsenic did not alter the plaque size, although the size was highly variable. In addition, control apoE-/-/As3MT-/- mice had significantly larger plaque size compared with control apoE-/-. CONCLUSION This study shows that early life exposure to inorganic and methylated arsenicals is pro-atherogenic with sex-specific differences in plaque composition and a potential role for As3MT in mice. https://doi.org/10.1289/EHP8171.
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Affiliation(s)
| | - Kiran Makhani
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Maryse Lemaire
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Catherine A. Lemarié
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
- EA3878, European University of Occidental Brittany, Brest, France
- UMR 1078, Institut national de la santé et de la recherché médicale, Brest, France
| | - Dany Plourde
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Alicia M. Bolt
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Christopher Chiavatti
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - D. Scott Bohle
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Stéphanie Lehoux
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Mark S. Goldberg
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
- Division of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Koren K. Mann
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
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Monteiro De Oliveira EC, Caixeta ES, Santos VSV, Pereira BB. Arsenic exposure from groundwater: environmental contamination, human health effects, and sustainable solutions. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2021; 24:119-135. [PMID: 33709865 DOI: 10.1080/10937404.2021.1898504] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Arsenic (As) occurs naturally in geologic conditions, but groundwater contamination might also be found due to the consequences of mining, agricultural and industrial processes. Human exposure to As after drinking contaminated water is commonly associated with acute toxicity outcomes and chronic effects ranging from skin lesions to cancer. Integrated actions from environmental and health authorities are needed to reduce exposure, monitoring outcomes, and promotion of actions to offer sustainable As-safe water alternatives. Considering recent research trends, the present review summarizes and discusses current issues associated with the process and effects of contamination and decontamination in an environmental health perspective. Recent findings reinforce the harmful effects of the consumption of As-contaminated water and broaden the scope of related diseases including intestinal maladies, type 2 diabetes, cancers of bladder, kidneys, lung, and liver. Among the main strategies to diminish or remove As from water, the following are highlighted (1) ion exchange system and membrane filtration (micro, ultra, and nanofiltration) as physicochemical treatment systems; (2) use of cyanobacteria and algae in bioremediation programs and (3) application of nanotechnology for water treatment.
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Affiliation(s)
| | - Evelyn Siqueira Caixeta
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Institute of Biotechnology, Uberlândia, Minas Gerais, Brazil
| | - Vanessa Santana Vieira Santos
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Institute of Biotechnology, Uberlândia, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Institute of Biotechnology, Uberlândia, Minas Gerais, Brazil
- Institute of Geography, Department of Environmental Health, Federal University of Uberlândia, Santa Mônica Campus, Uberlândia, Minas Gerais, Brazil
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Saran U, Tyagi A, Chandrasekaran B, Ankem MK, Damodaran C. The role of autophagy in metal-induced urogenital carcinogenesis. Semin Cancer Biol 2021; 76:247-257. [PMID: 33798723 DOI: 10.1016/j.semcancer.2021.03.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 12/13/2022]
Abstract
Environmental and/or occupational exposure to metals such as Arsenic (As), Cadmium (Cd), and Chromium (Cr) have been shown to induce carcinogenesis in various organs, including the urogenital system. However, the mechanisms responsible for metal-induced carcinogenesis remain elusive. We and others have shown that metals are potent inducers of autophagy, which has been suggested to be an adaptive stress response to allow metal-exposed cells to survive in hostile environments. Albeit few, recent experimental studies have shown that As and Cd promote tumorigenesis via autophagy and that inhibition of autophagic signaling suppressed metal-induced carcinogenesis. In light of the newly emerging role of autophagic involvement in metal-induced carcinogenesis, the present review focuses explicitly on the mechanistic role of autophagy and potential signaling pathways involved in As-, Cd-, and Cr-induced urogenital carcinogenesis.
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Affiliation(s)
- Uttara Saran
- Department of Urology, University of Louisville, Louisville, KY, United States
| | - Ashish Tyagi
- Department of Urology, University of Louisville, Louisville, KY, United States
| | | | - Murali K Ankem
- Department of Urology, University of Louisville, Louisville, KY, United States
| | - Chendil Damodaran
- Department of Urology, University of Louisville, Louisville, KY, United States; College of Pharmacy, Department of Pharmaceutical Sciences, Texas A&M, College Station, TX, United States.
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Orisakwe OE. Crude oil and public health issues in Niger Delta, Nigeria: Much ado about the inevitable. ENVIRONMENTAL RESEARCH 2021; 194:110725. [PMID: 33428909 DOI: 10.1016/j.envres.2021.110725] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/01/2021] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
The importance of crude oil has come at a great cost. In many developing economies of the world, it can be described as the bitter-sweet crude for its double-edged impacts on the welfare, wellness and wellness of the people. Agitations and restiveness remain characteristic features of Niger Delta following claims of exploitation and neglect of the local population by the multinationals. Literature on the environmental and public health impacts of crude oil was searched from relevant databases such as google scholar, Science Direct, Scopus and PubMed. This paper is a translational scientific and toxicological insight on what should be done by the major players rather than casting unending aspersions. Since living near oil spills and crude oil production sites is an environmental stressor occasioned by exposure to both chemical pollutants and physical menace that are all detrimental to health, cumulative risk assessment CRA is proposed as a viable approach for a comprehensive understanding of the size of this problem. Multinational oil companies should support development of Environmental Medicine Research which will in turn generate data on both how to harness the natural resources to combat the public health issues associated with oil exploration and the mitigation and remediation of the environment. This endeavor will create a waste-to-wealth program that will pacify the restiveness in oil exploring communities. It will be interesting to know that in the same environment that breeds the elephant-in-the-parlor lies the natural antidotes to check-mate the public health malady.
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Affiliation(s)
- Orish Ebere Orisakwe
- World Bank Africa Centre of Excellence in Public Health and Toxicological Research (PUTOR), University of Port Harcourt, PMB,5323, Port Harcourt, Rivers State, Nigeria.
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Jain RB. Concentrations of selected arsenic species in urine across various stages of renal function including hyperfiltration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:8594-8605. [PMID: 33067786 DOI: 10.1007/s11356-020-11189-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Data (N = 10,590) from National Health and Nutrition Examination Survey for 2005-2016 for US adults aged ≥ 20 years were analyzed to study how concentrations of arsenobetaine (UAB), monomethylarsonic acid (UMMA), dimethylarsenic acid (UDMA), and total arsenic (UAS) in urine vary across the stages of renal function (RF). Data were analyzed over RF-1A (eGFR > 110 mL/min/1.73 m2), RF-1B (eGFR between 90 and 110 mL/min/1.73 m2), RF-2 (eGFR between 60 and 90 mL/min/1.73 m2), RF-3A (eGFR between 45 and 60 mL/min/1.73 m2), and RF-3B/4 (eGFR between 15 and 45 mL/min/1.73 m2). Adjusted geometric mean (AGM) concentrations of the total population, males, and females for UAS, UAB, and UDMA were observed to follow inverted U-shaped distributions with points of inflection located at RF-3A. For example, adjusted concentrations for the total population for UAS were 8.8, 8.8, 9.5, 11.7, and 9.6 μg/L for those in RF-1A, RF-1B, RF-2, RF-3A, and RF-3B/4 respectively. While statistically significant differences were only occasionally observed, males, in general, had lower AGMs than females for UAS and UDMA, but females had lower AGMs than males for UAB. Among the various racial/ethnic groups, non-Hispanic whites had the lowest adjusted concentrations of all four arsenic variables. Adjusted levels of all four arsenic variables were observed to decrease over survey years of 2005-2006 through 2015-2016. However, statistical significance was not necessarily reached for all RF stages. Smoking was associated with reduced levels of four arsenic variables over RF-1A through RF-2. Diabetes was associated with increased levels of UMMA and UDMA at RF-2.
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Kumar A, Ali M, Kumar R, Kumar M, Sagar P, Pandey RK, Akhouri V, Kumar V, Anand G, Niraj PK, Rani R, Kumar S, Kumar D, Bishwapriya A, Ghosh AK. Arsenic exposure in Indo Gangetic plains of Bihar causing increased cancer risk. Sci Rep 2021; 11:2376. [PMID: 33504854 PMCID: PMC7841152 DOI: 10.1038/s41598-021-81579-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/21/2020] [Indexed: 01/30/2023] Open
Abstract
Reportedly, 300 million people worldwide are affected by the consumption of arsenic contaminated groundwater. India prominently figures amongst them and the state of Bihar has shown an upsurge in cases affected by arsenic poisoning. Escalated arsenic content in blood, leaves 1 in every 100 human being highly vulnerable to being affected by the disease. Uncontrolled intake may lead to skin, kidney, liver, bladder, or lung related cancer but even indirect forms of cancer are showing up on a regular basis with abnormal arsenic levels as the probable cause. But despite the apparent relation, the etiology has not been understood clearly. Blood samples of 2000 confirmed cancer patients were collected from pathology department of our institute. For cross-sectional design, 200 blood samples of subjects free from cancer from arsenic free pockets of Patna urban agglomeration, were collected. Blood arsenic levels in carcinoma patients as compared to sarcomas, lymphomas and leukemia were found to be higher. The geospatial map correlates the blood arsenic with cancer types and the demographic area of Gangetic plains. Most of the cancer patients with high blood arsenic concentration were from the districts near the river Ganges. The raised blood arsenic concentration in the 2000 cancer patients strongly correlates the relationship of arsenic with cancer especially the carcinoma type which is more vulnerable. The average arsenic concentration in blood of the cancer patients in the Gangetic plains denotes the significant role of arsenic which is present in endemic proportions. Thus, the study significantly correlates and advocates a strong relation of the deleterious element with the disease. It also underlines the need to address the problem by deciphering the root cause of the elevated cancer incidences in the Gangetic basin of Bihar and its association with arsenic poisoning.
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Affiliation(s)
- Arun Kumar
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India.
| | - Mohammad Ali
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Ranjit Kumar
- Department of Animal Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
| | - Mukesh Kumar
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Prity Sagar
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Ritu Kumari Pandey
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Vivek Akhouri
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Vikas Kumar
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Gautam Anand
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Pintoo Kumar Niraj
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Rita Rani
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
| | - Santosh Kumar
- Department of Applied Geoscience and Engineering, Delft University of Technology, Delft, The Netherlands
| | - Dhruv Kumar
- Amity Institute of Molecular Medicine and Stem Cell Research, Amity University Uttar Pradesh, Noida, India
| | | | - Ashok Kumar Ghosh
- Mahavir Cancer Sansthan and Research Centre, Patna, Bihar, 801505, India
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Chang CW, Ou CH, Yu CC, Lo CW, Tsai CY, Cheng PY, Chen YT, Huang HC, Wu CC, Li CC, Lee HY. Comparative analysis of patients with upper urinary tract urothelial carcinoma in black-foot disease endemic and non-endemic area. BMC Cancer 2021; 21:80. [PMID: 33468084 PMCID: PMC7816491 DOI: 10.1186/s12885-021-07799-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/07/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A high incidence of upper urinary tract urothelial carcinoma has been reported in the southwestern area of Taiwan, where arsenic water contamination was considered the main cause. However, there is no definite proof to show a correlation between arsenic water contamination and upper urinary tract urothelial carcinoma. To investigate the clinical and epidemiological features of patients with upper urinary tract urothelial carcinoma between arsenic water endemic and non-endemic areas, we analyzed patients in terms of characteristics, stratified overall survival, disease-free survival, and cancer-specific survival. METHODS The records of a total of 1194 patients diagnosed with upper urinary tract urothelial carcinoma were retrospectively reviewed. Clinical data and current medical status were collected from the medical records. Statistical analyses were performed to determine the clinical variables and stratified survival curves between endemic and non-endemic groups. RESULTS Female predominance was revealed in both endemic and non-endemic groups (male:female ratio = 1:1.2-1.4). No statistical differences were found in histological types, staging, and tumor size between the two groups. Nonetheless, patients with characteristics of aging and having end-stage renal disease were outnumbered in the non-endemic group, while a higher prevalence of previous bladder tumors and more ureteral tumors were found in the endemic group. Adjusted stratified cumulative survival curves suggested a poorer prognosis in endemic patients, especially in disease-free survival of early stage disease. CONCLUSIONS A higher mortality rate with more previous bladder cancer history and ureteral tumors was seen in patients with upper urinary tract urothelial carcinoma residing in the arsenic water contamination area. This may be attributed to the long-term carcinogenic effect of arsenic underground water.
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Affiliation(s)
- Che-Wei Chang
- Department of Urology, Kaohsiung Medical University Chung Ho Memorial Hospital, Kaohsiung, Taiwan
| | - Chien-Hui Ou
- Department of Urology, National Cheng-Kung University Hospital, Tainan, Taiwan
| | - Chih-Chin Yu
- Department of Urology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chi-Wen Lo
- Department of Urology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chung-You Tsai
- Department of Urology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Pai-Yu Cheng
- Department of Urology, Far-Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Yung-Tai Chen
- Department of Urology, Taiwan Adventist Hospital, Taipei, Taiwan
| | - Hsu-Che Huang
- Department of Urology, Cardinal Tien Hospital, New Taipei City, Taiwan
| | - Chia-Chang Wu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Ching-Chia Li
- Department of Urology, Kaohsiung Medical University Chung Ho Memorial Hospital, Kaohsiung, Taiwan
| | - Hsiang-Ying Lee
- Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan.
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Zhou Q, Jin P, Liu J, Li S, Liu W, Xi S. HER2 overexpression triggers the IL-8 to promote arsenic-induced EMT and stem cell-like phenotypes in human bladder epithelial cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111693. [PMID: 33396024 DOI: 10.1016/j.ecoenv.2020.111693] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Arsenic is a natural chemical element that is strongly associated with bladder cancer. Understanding the underlying mechanisms behind the association between arsenic and bladder cancer as well as identifying effective preventive interventions will help reduce the incidence and mortality of this disease. The epithelial-mesenchymal transition (EMT) and cancer stem cell (CSC) properties play key roles in cancer development and progression. Here, we reported that chronic exposure to arsenic resulted in EMT and increased levels of the CSC marker CD44 in human uroepithelial cells. Furthermore, IL-8 promoted a mesenchymal phenotype and upregulated CD44 by activating the ERK, AKT and STAT3 signaling. Phosphorylation of the human epidermal growth factor receptor 2 (HER2) was key for arsenic-induced IL-8 overexpression and depended on the simultaneous activation of the MAPK, JNK, PI3K/AKT and GSK3β signaling pathways. We also found that genistein inhibited arsenic-induced HER2 phosphorylation and downregulated its downstream signaling pathways, thereby inhibiting progression of EMT, and reducing CD44 expression levels. These results demonstrate that the HER2/IL-8 axis is related to the acquisition of an EMT phenotype and CSCs in arsenic-treated cells. The inhibitory effects of genistein on EMT and CSCs provide a new perspective for the intervention and potential chemotherapy against arsenic-induced bladder cancer.
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Affiliation(s)
- Qing Zhou
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
| | - Peiyu Jin
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
| | - Jieyu Liu
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
| | - Sihao Li
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
| | - Weijue Liu
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
| | - Shuhua Xi
- Department of Environmental and Occupational Health, Liaoning Provincial Key Laboratory of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning, PR China.
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Wang M, Tan J, Jiang C, Li S, Wu X, Ni G, He Y. Inorganic arsenic influences cell apoptosis by regulating the expression of MEG3 gene. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:475-484. [PMID: 33033900 DOI: 10.1007/s10653-020-00740-x] [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: 03/27/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Arsenic is a wildly distributed carcinogen in the environment. Arsenic-induced apoptosis has been extensively studied in therapeutics and toxicology. LncRNA MEG3 has been extensively studied as apoptosis regulatory gene in recent years. However, it stays unclear regarding how the mechanism of MEG3 regulates arsenic-induced apoptosis. Our focus was to explore the effects of MEG3 on arsenic-induced apoptosis. MTS assay was used to test cell viability, and qRT-PCR was for the examination of gene expressions. The effect of the apoptosis and necrosis after knockdown MEG3 was detected with double staining. Our results demonstrated that MEG3 expression was positively correlated with the concentration of three arsenic species (inorganic arsenic (iAs), monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA)) (p < 0.05). The ability of iAs to induce MEG3 expression was much higher compared with that induced by MMA and DMA. In addition, our experiments confirmed that MEG3 knockdown increased cell viability and arsenic-induced apoptosis, but cell viability decreased after iAs treatment. Moreover, LncRNA MEG3 regulated apoptosis via down-regulate API5 while up-regulate CASP7, CCND3 and APAF1. It is further proved that arsenic-induced apoptosis increased after the knockdown of MEG3, which regulates these genes. These findings provide experimental evidence and possible mechanisms for subsequent research on the effects of arsenic on health.
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Affiliation(s)
- Mengjie Wang
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Jingwen Tan
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Chenglan Jiang
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Shuting Li
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Xinan Wu
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China
| | - Guanghui Ni
- College of Pharmaceutic Science, Yunnan University of Chinese Medicine, No.1076 Yuhua Road Chenggong District, Kunming, Yunnan Province, China.
| | - Yuefeng He
- School of Public Health, Kunming Medical University, No.1168 Chunrongxi Road Chenggong District, Kunming, Yunnan Province, China.
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Hsueh YM, Lin YC, Huang YL, Shiue HS, Pu YS, Huang CY, Chung CJ. Effect of plasma selenium, red blood cell cadmium, total urinary arsenic levels, and eGFR on renal cell carcinoma. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 750:141547. [PMID: 32858293 DOI: 10.1016/j.scitotenv.2020.141547] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
High total urinary arsenic concentrations and low estimated glomerular filtration rate (eGFR) increase the risk of renal cell carcinoma (RCC). This study aimed to determine whether other metals or metalloids can affect RCC. A total of 401 patients with RCC and 774 age- and sex-matched controls were recruited between November 2006 and December 2012 in Taiwan. Surgical resection or image-guided biopsy of renal tumors was performed to pathologically verify RCC. High-performance liquid chromatography linked to a hydride generator and atomic absorption spectrometer were used to measure the urinary arsenic species concentrations. Inductively coupled plasma mass spectrometry was used to determine plasma selenium and red blood cell cadmium and lead concentration. Plasma selenium levels were inversely related to RCC, whereas red blood cell cadmium levels were directly related to RCC. The odds ratio (OR) and 95% confidence interval (CI) were 0.14 (95% CI, 0.10-0.20) and 1.33 (95% CI, 1.03-1.72), respectively. A low plasma selenium level tended to interact with high total urinary arsenic levels or with high red blood cell cadmium concentration to increase the OR of RCC. In particular, low eGFR multiplicatively interacted with high red blood cell cadmium concentration to increase the OR of RCC (Pinteraction=0.003). This study was the first to find a significant multiplicative interaction between eGFR and the red blood cell cadmium levels on the increased OR of RCC.
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Affiliation(s)
- Yu-Mei Hsueh
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ying-Chin Lin
- Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Geriatric Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ya-Li Huang
- Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Horng-Sheng Shiue
- Department of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yeong-Shiau Pu
- Department of Urology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chao-Yuan Huang
- Department of Urology, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Chi-Jung Chung
- Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan; Department of Medical Research, China Medical University and Hospital, Taichung, Taiwan.
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Akinwumi KA, Gbadegesin MA, Aboyewa JA, Odunola OA. Attenuation of potassium dichromate and sodium arsenite toxicities by methanol extract of Rauvolfia vomitoria in mice. J Basic Clin Physiol Pharmacol 2020; 33:255-264. [PMID: 35596240 DOI: 10.1515/jbcpp-2020-0037] [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: 02/18/2020] [Accepted: 09/12/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Exposure to arsenic and hexavalent chromium is a major public health concern especially in the developing part of the world and there is paucity of information on reliable treatment modalilities. It is in this regard that this study evaluates the efficacy of methanol leaf extract of Rauvolfia vomitoria (MRV) when used as pretreatment agent against potassium dichromate (K2Cr2O7) and sodium arsenite (NaAsO2) exposure. METHODS Swiss albino mice between 7 and 10 weeks old were divided into eight cohorts of five animals each. Treatment groups consisted of a distilled water control, MRV alone (275 mg/kg po daily), K2Cr2O7 (12.0 mg/kg, single ip injection) +/- MRV pretreatment, NaAsO2 (2.5 mg/kg, single ip injection) +/- MRV pretreatment, Na2AsO2 + K2Cr2O7 +/- MRV pretreatment. MRV was given for seven consecutive days, while K2Cr2O7 and NaAsO2 were injected on day seven of the experiment. The frequency of micronucleated polychromatic erythrocytes (mPCEs) was determined in bone marrow cells, while aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities were assessed in the plasma. Hepatic glutathione (GSH), malondialdehyde (MDA), catalase (CAT) and glutathione-S-transferase (GST) levels were also determined. RESULTS The NaAsO2 and K2Cr2O7 significantly (p<0.05) increased mPCE formation, AST, ALT, and CAT when compared with the control. Simultaneous exposure to NaAsO2 and K2Cr2O7 further increased the levels of the markers. Furthermore, GSH and GST were significantly reduced by NaAsO2 or K2Cr2O7 or their combination. Pretreatment with MRV reversed the markers towards that of control. CONCLUSIONS Methanol extract of Rauvolfia vomitoria may therefore ameliorate NaAsO2 and K2Cr2O7-induced toxicities via reduction of oxidative stress and fortification of anti-oxidant system.
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Affiliation(s)
- Kazeem A Akinwumi
- Department of Biochemistry, Cancer Research and Molecular Biology Laboratories, College of Medicine, University of Ibadan, Ibadan, Nigeria.,Department of Chemical Sciences and Food Sciences, Bells University of Technology, Ota, Ogun State, Nigeria
| | - Michael A Gbadegesin
- Department of Biochemistry, Cancer Research and Molecular Biology Laboratories, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Jumoke A Aboyewa
- Department of Chemical Sciences and Food Sciences, Bells University of Technology, Ota, Ogun State, Nigeria.,Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Oyeronke A Odunola
- Department of Biochemistry, Cancer Research and Molecular Biology Laboratories, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Pratama DE, Hsieh WC, Lin KY, Chen YY, Lin CC, Lee T, Hu Y. Unconventional separation of arsenic trioxide from unused aqueous chemotherapeutic agents by direct evaporative crystallization. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1837876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Dhanang Edy Pratama
- Department of Chemical and Materials Engineering, National Central University, Taoyuan City, Taiwan, R.O.C
| | - Wen-Chen Hsieh
- Department of Chemical and Materials Engineering, National Central University, Taoyuan City, Taiwan, R.O.C
| | - Kuan-Yun Lin
- Department of Chemical and Materials Engineering, National Central University, Taoyuan City, Taiwan, R.O.C
| | - Yu-Ying Chen
- Pharmaceutical Development Center, TTY Biopharm Co. Ltd., Taipei City, Taiwan, R.O.C
| | - Chun-Chou Lin
- Pharmaceutical Development Center, TTY Biopharm Co. Ltd., Taipei City, Taiwan, R.O.C
| | - Tu Lee
- Department of Chemical and Materials Engineering, National Central University, Taoyuan City, Taiwan, R.O.C
| | - Yufang Hu
- Pharmaceutical Development Center, TTY Biopharm Co. Ltd., Taipei City, Taiwan, R.O.C
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Liu C, Zhang A. ROS-mediated PERK-eIF2α-ATF4 pathway plays an important role in arsenite-induced L-02 cells apoptosis via regulating CHOP-DR5 signaling. ENVIRONMENTAL TOXICOLOGY 2020; 35:1100-1113. [PMID: 32506763 DOI: 10.1002/tox.22946] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Chronic exposure to arsenic remains a worldwide environmental health issue, affecting hundreds of millions of people. Although, arsenic-induced oxidative stress and apoptosis have been determined, the underlying apoptosis mechanism has not been fully elucidated yet. Oxidative stress integrated-ER stress plays an important role in Life-and-Death decision of cells. The current study was to investigate whether NaAsO2 utilizes oxidative stress integrated-ER stress signaling to exert pro-apoptotic activity in L-02 cells. Results showed that death receptor 5 (DR5) was a mediator of NaAsO2 -induced apoptosis by enhancing construction of the death-inducing signaling complex (DISC). NaAsO2 -sensitized DR5 elevation required maintainable transcription and its transcription factor C/EBP homologous protein (CHOP). Further results showed that NaAsO2 increased expression in biomarker of endoplasmic reticulum (ER) stress and activated the protein kinase R-like ER kinase (PERK)-eukaryotic translation initiation 2α (eIF2α)-activating transcription factor 4 (ATF4) pathway. PERK inhibitor and ATF4 siRNA significantly attenuated NaAsO2 -induced CHOP and DR5 expressions. In addition, the antioxidant N-acetyl-l-cysteine (NAC) treatment led to amelioration of NaAsO2 -induced production of reactive oxygen species (ROS) and some ER stress- and apoptosis- related protein levels and cell viability. Taken together, the results indicate that ROS-mediated PERK-eIF2α-ATF4 pathway activated by NaAsO2 is the critical upstream event for subsequent apoptosis induction via regulating CHOP-DR5 signaling in L-02 cells when chronic exposure to arsenic, and support that antioxidants might be potential therapeutic agents for preventing or delaying the onset and progress of arsenic-induced hepatotoxicity.
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Affiliation(s)
- Chunyan Liu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, Guizhou Medical University, Guiyang, China
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, Guizhou Medical University, Guiyang, China
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Chen D, Chen QY, Wang Z, Zhu Y, Kluz T, Tan W, Li J, Wu F, Fang L, Zhang X, He R, Shen S, Sun H, Zang C, Jin C, Costa M. Polyadenylation of Histone H3.1 mRNA Promotes Cell Transformation by Displacing H3.3 from Gene Regulatory Elements. iScience 2020; 23:101518. [PMID: 32920490 PMCID: PMC7492993 DOI: 10.1016/j.isci.2020.101518] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 07/17/2020] [Accepted: 08/26/2020] [Indexed: 12/17/2022] Open
Abstract
Replication-dependent canonical histone messenger RNAs (mRNAs) do not terminate with a poly(A) tail at the 3' end. We previously demonstrated that exposure to arsenic, an environmental carcinogen, induces polyadenylation of canonical histone H3.1 mRNA, causing transformation of human cells in vitro. Here we report that polyadenylation of H3.1 mRNA increases H3.1 protein, resulting in displacement of histone variant H3.3 at active promoters, enhancers, and insulator regions, leading to transcriptional deregulation, G2/M cell-cycle arrest, chromosome aneuploidy, and aberrations. In support of these observations, knocking down the expression of H3.3 induced cell transformation, whereas ectopic expression of H3.3 attenuated arsenic-induced cell transformation. Notably, arsenic exposure also resulted in displacement of H3.3 from active promoters, enhancers, and insulator regions. These data suggest that H3.3 displacement might be central to carcinogenesis caused by polyadenylation of H3.1 mRNA upon arsenic exposure. Our findings illustrate the importance of proper histone stoichiometry in maintaining genome integrity.
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Affiliation(s)
- Danqi Chen
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Qiao Yi Chen
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Zhenjia Wang
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Yusha Zhu
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Thomas Kluz
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Wuwei Tan
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
- Department of Statistics, University of Virginia, Charlottesville, VA 22904, USA
| | - Jinquan Li
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Feng Wu
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Lei Fang
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Xiaoru Zhang
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Rongquan He
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Steven Shen
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Hong Sun
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
| | - Chongzhi Zang
- Center for Public Health Genomics, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA 22908, USA
| | - Chunyuan Jin
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY 10016, USA
| | - Max Costa
- Department of Environmental Medicine, New York University School of Medicine, New York, NY 10010, USA
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
- Perlmutter Cancer Center, NYU Langone Health, New York, NY 10016, USA
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Zhang Y, Birmann BM, Han J, Giovannucci EL, Speizer FE, Stampfer MJ, Rosner BA, Schernhammer ES. Personal use of permanent hair dyes and cancer risk and mortality in US women: prospective cohort study. BMJ 2020; 370:m2942. [PMID: 32878860 PMCID: PMC7463170 DOI: 10.1136/bmj.m2942] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To evaluate the associations between personal use of permanent hair dyes and cancer risk and mortality. DESIGN Prospective cohort study. SETTING AND PARTICIPANTS 117 200 women enrolled in the Nurses' Health Study, an ongoing prospective cohort study of female nurses in the United States. The women were free of cancer at baseline, reported information on personal use of permanent hair dyes, and were followed for 36 years. EXPOSURE Status, duration, frequency, and integral use (cumulative dose calculated from duration and frequency) of permanent hair dyes. Age at first use and time since first use of permanent hair dyes. MAIN OUTCOME MEASURES Associations of personal use of permanent hair dyes with risk of overall cancer and specific cancers, and cancer related death. Age and multivariable adjusted hazard ratios and 95% confidence intervals were estimated by using Cox proportional hazard models. RESULTS Ever users of permanent hair dyes had no significant increases in risk of solid cancers (n=20 805, excluding non-melanoma skin cancers; hazard ratio 0.98, 95% confidence interval 0.96 to 1.01) or hematopoietic cancers overall (n=1807; 1.00, 0.91 to 1.10) compared with non-users. Additionally, ever users did not have an increased risk of most specific cancers (cutaneous squamous cell carcinoma, bladder cancer, melanoma, estrogen receptor positive breast cancer, progesterone receptor positive breast cancer, hormone receptor positive breast cancer, brain cancer, colorectal cancer, kidney cancer, lung cancer, and most of the major subclasses and histological subtypes of hematopoietic cancer) or cancer related death (n=4860; 0.96, 0.91 to 1.02). Basal cell carcinoma risk was slightly increased for ever users (n=22 560; 1.05, 1.02 to 1.08). Cumulative dose was positively associated with risk of estrogen receptor negative breast cancer, progesterone receptor negative breast cancer, hormone receptor negative breast cancer, and ovarian cancer. An increased risk of Hodgkin lymphoma was observed only for women with naturally dark hair (based on 70 women, 24 with dark hair), and a higher risk of basal cell carcinoma was observed for women with naturally light hair. CONCLUSION No positive association was found between personal use of permanent hair dye and risk of most cancers and cancer related mortality. The increased risk of basal cell carcinoma, breast cancer (estrogen receptor negative, progesterone receptor negative, hormone receptor negative) and ovarian cancer, and the mixed findings in analyses stratified by natural hair color warrant further investigation.
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Affiliation(s)
- Yin Zhang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - Brenda M Birmann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Jiali Han
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Richard M Fairbanks School of Public Health, Indiana University, Indianapolis, IN, USA
- Melvin and Bren Simon Cancer Center, Indiana University, Indianapolis, IN, USA
| | - Edward L Giovannucci
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA
- Department of Nutrition, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - Frank E Speizer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Environmental Health, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - Meir J Stampfer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA
- Department of Nutrition, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - Bernard A Rosner
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Biostatistics, Harvard T H Chan School of Public Health, Boston, MA, USA
| | - Eva S Schernhammer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA
- Department of Epidemiology, Center for Public Health, Medical University of Vienna, Vienna, Austria
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Bozack AK, Domingo-Relloso A, Haack K, Gamble MV, Tellez-Plaza M, Umans JG, Best LG, Yracheta J, Gribble MO, Cardenas A, Francesconi KA, Goessler W, Tang WY, Fallin MD, Cole SA, Navas-Acien A. Locus-Specific Differential DNA Methylation and Urinary Arsenic: An Epigenome-Wide Association Study in Blood among Adults with Low-to-Moderate Arsenic Exposure. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:67015. [PMID: 32603190 PMCID: PMC7534587 DOI: 10.1289/ehp6263] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 03/18/2020] [Accepted: 05/29/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND Chronic exposure to arsenic (As), a human toxicant and carcinogen, remains a global public health problem. Health risks persist after As exposure has ended, suggesting epigenetic dysregulation as a mechanistic link between exposure and health outcomes. OBJECTIVES We investigated the association between total urinary As and locus-specific DNA methylation in the Strong Heart Study, a cohort of American Indian adults with low-to-moderate As exposure [total urinary As, mean ( ± SD ) μ g / g creatinine: 11.7 (10.6)]. METHODS DNA methylation was measured in 2,325 participants using the Illumina MethylationEPIC array. We implemented linear models to test differentially methylated positions (DMPs) and the DMRcate method to identify regions (DMRs) and conducted gene ontology enrichment analysis. Models were adjusted for estimated cell type proportions, age, sex, body mass index, smoking, education, estimated glomerular filtration rate, and study center. Arsenic was measured in urine as the sum of inorganic and methylated species. RESULTS In adjusted models, methylation at 20 CpGs was associated with urinary As after false discovery rate (FDR) correction (FDR < 0.05 ). After Bonferroni correction, 5 CpGs remained associated with total urinary As (p Bonferroni < 0.05 ), located in SLC7A11, ANKS3, LINGO3, CSNK1D, ADAMTSL4. We identified one DMR on chromosome 11 (chr11:2,322,050-2,323,247), annotated to C11orf2; TSPAN32 genes. DISCUSSION This is one of the first epigenome-wide association studies to investigate As exposure and locus-specific DNA methylation using the Illumina MethylationEPIC array and the largest epigenome-wide study of As exposure. The top DMP was located in SLC7A11A, a gene involved in cystine/glutamate transport and the biosynthesis of glutathione, an antioxidant that may protect against As-induced oxidative stress. Additional DMPs were located in genes associated with tumor development and glucose metabolism. Further research is needed, including research in more diverse populations, to investigate whether As-related DNA methylation signatures are associated with gene expression or may serve as biomarkers of disease development. https://doi.org/10.1289/EHP6263.
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Affiliation(s)
- Anne K Bozack
- Department of Environmental Health Science, Columbia University, New York, New York, USA
| | - Arce Domingo-Relloso
- Department of Environmental Health Science, Columbia University, New York, New York, USA
- Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institutes, Madrid, Spain
| | - Karin Haack
- Population Health Program, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Mary V Gamble
- Department of Environmental Health Science, Columbia University, New York, New York, USA
| | - Maria Tellez-Plaza
- Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institutes, Madrid, Spain
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jason G Umans
- MedStar Health Research Institute, Washington, District of Columbia, USA
- Center for Clinical and Translational Sciences, Georgetown/Howard Universities, Washington, DC, USA
| | - Lyle G Best
- Missouri Breaks Industries Research, Eagle Butte, South Dakota, USA
| | - Joseph Yracheta
- Missouri Breaks Industries Research, Eagle Butte, South Dakota, USA
| | - Matthew O Gribble
- Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, Georgia, USA
| | - Andres Cardenas
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkley, California, USA
| | | | | | - Wan-Yee Tang
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - M Daniele Fallin
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
- Wendy Klag Center for Autism and Developmental Disabilities, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Shelley A Cole
- Population Health Program, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Ana Navas-Acien
- Department of Environmental Health Science, Columbia University, New York, New York, USA
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Prasad P, Sarkar N, Sinha D. Effect of low- and high-level groundwater arsenic on peripheral blood and lung function of exposed rural women. Regul Toxicol Pharmacol 2020; 115:104684. [PMID: 32454235 DOI: 10.1016/j.yrtph.2020.104684] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 05/01/2020] [Accepted: 05/03/2020] [Indexed: 11/16/2022]
Abstract
The World Health Organization (WHO) recommended maximum contaminant level (MCL) of arsenic (As) in drinking water at 10 μg/L. Many Asian countries still have their MCL for As at 50 μg/L. The current cross sectional study was conducted on asymptomatic females (without As related skin lesions) selected from rural areas of West Bengal, Baruipur and Dhamakhali [low As 11-50 μg/L; N,93]; Kamardanga & Sibhati [high As>50 μg/L; N,70] and Boria [Control; As<10 μg/L N,118] of West Bengal, India. The study was designed to compare the status of peripheral blood and lung function due to prolonged As exposure. The lung function parameters were considered according to Miller's prediction quadrant - FVC less than 80% indicated restrictive lung, FEV1/FVC less than 70% showed obstructive lung and both FVC and FEV1/FVC less than predicted percentage exhibited combined lung function decrement. The study showed that groundwater As concentration [22.5 ± 19.2 (low), 67.8 ± 26.9 (high) and 1.02 ± 2.3 μg/L (control)] was correlated with nail As content of the enrolled women. Linear regression depicted that nail As content influenced reduction of haemoglobin (β: 0.43; 95%CI: 0.02 to -0.006; p = 0.0001) and CD56+ NK cells (β: 0.53; 95%CI: 0.07 to -0.03; p = 0.0001) per 1 μg/g increase in As in nails. Multivariate logistic regression exhibited that nail As content was associated with reduction of lung function parameters [FEV1 (Exp B:1.04; 95%CI: 1.022 to 1.055; p = 0.0001) and FVC (Exp B:1.05; 95%CI: 1.03 to 1.07; p = 0.0001) per 1 μg/g increase in As in nails. Hence the study may be indicative of the fact that even in asymptomatic women, increase in chronic As exposure may weaken immune surveillance and provoke respiratory ailments.
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Affiliation(s)
- Priyanka Prasad
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, 37, S.P. Mukherjee Road, Kolkata 700026, India
| | - Nivedita Sarkar
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, 37, S.P. Mukherjee Road, Kolkata 700026, India
| | - Dona Sinha
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, 37, S.P. Mukherjee Road, Kolkata 700026, India.
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Duan T, Hu T, Wu C, Yeh YT, Lu J, Zhang Q, Li X, Jian W, Luo P. PINK1/Parkin-mediated mitophagy is involved in NaAsO 2-induced apoptosis of human hepatic cells through activation of ERK signaling. Toxicol In Vitro 2020; 66:104857. [PMID: 32278034 DOI: 10.1016/j.tiv.2020.104857] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/04/2020] [Accepted: 04/06/2020] [Indexed: 02/09/2023]
Abstract
Mitochondrial dysfunction has been demonstrated as one key event in arsenic-induced hepatic cell damage though the exact molecular target remains unknown. Here we examined NaAsO2-induced mitochondrial damage in the L-02 cell led to mitochondrial depolarization and cytochrome c release, mitophagy, apoptosis in a dose response manner. Mitophagy was measured by analysis of PINK1, Parkin, LC3-II and p62 protein. Apoptosis was assessed by measuring Annexin V. Using the mitophagy inhibitor cyclosporine A (CsA) or ERK inhibitor (PD98059), the balance between mitophagy and apoptosis were further explored. When CsA was used prior to cell exposure to NaAsO2, it was found that the levels of mitophagy were decreased as expected and apoptosis was increased in response. CsA alone had no effect on the apoptosis rate. When the ERK signaling inhibitor PD98059 was used, there was a similar result that mitophagy was reduced though in contrast with CsA the apoptosis rate was also decreased compared with NaAsO2 alone. This result, along with the increased levels of ERK measured here in response to NaAsO2, indicates that ERK activation is a second key molecular response to NaAsO2 through the activation of both apoptosis and mitophagy. Thus the results with CsA indicate that the likely key biological event in NaAsO2 toxicity is at the level of the mitochondria leading to cytochrome c release and apoptosis. Mitophagy is increased in response to a secondary effect of NaAsO2 on ERK signaling that activates both mitophagy and apoptosis. The activation of mitophagy allows the cell to avoid some apoptosis. When ERK signaling is inhibited by PD98059 both the levels of apoptosis and mitophagy are decreased compared with the response produced by NaAsO2 alone in comparison to the inhibition of mitophagy by CsA that reduced mitophagy but dramatically increased apoptosis in response.
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Affiliation(s)
- Tianxiao Duan
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Ting Hu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Changyan Wu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Yao-Tsung Yeh
- Aging and Disease Prevention Research Center, Fooyin University, Kaohsiung 83102, Taiwan
| | - Ju Lu
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Qi Zhang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Xiaozhi Li
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Wen Jian
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Peng Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, Guizhou, PR China; State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China.
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DiGiovanni A, Demanelis K, Tong L, Argos M, Shinkle J, Jasmine F, Sabarinathan M, Rakibuz-Zaman M, Sarwar G, Islam MT, Shahriar H, Islam T, Rahman M, Yunus M, Graziano J, Gamble MV, Ahsan H, Pierce BL. Assessing the impact of arsenic metabolism efficiency on DNA methylation using Mendelian randomization. Environ Epidemiol 2020; 4:e083. [PMID: 32337471 PMCID: PMC7147391 DOI: 10.1097/ee9.0000000000000083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 01/10/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Arsenic exposure affects >100 million people globally and increases risk for chronic diseases. One possible toxicity mechanism is epigenetic modification. Previous epigenome-wide association studies (EWAS) have identified associations between arsenic exposure and CpG-specific DNA methylation. To provide additional evidence that observed associations represent causal relationships, we examine the association between genetic determinants of arsenic metabolism efficiency (percent dimethylarsinic acid, DMA%, in urine) and DNA methylation among individuals from the Health Effects of Arsenic Longitudinal Study (n = 379) and Bangladesh Vitamin E and Selenium Trial (n = 393). METHODS We used multivariate linear models to assess the association of methylation at 221 arsenic-associated CpGs with DMA% and measures of genetically predicted DMA% derived from three SNPs (rs9527, rs11191527, and rs61735836). We also conducted two-sample Mendelian randomization analyses to estimate the association between arsenic metabolism efficiency and CpG methylation. RESULTS Among the associations between DMA% and methylation at each of 221 CpGs, 64% were directionally consistent with associations observed between arsenic exposure and the 221 CpGs from a prior EWAS. Similarly, among the associations between genetically predicted DMA% and each CpG, 62% were directionally consistent with the prior EWAS results. Two-sample Mendelian randomization analyses produced similar conclusions. CONCLUSION Our findings support the hypothesis that arsenic exposure effects DNA methylation at specific CpGs in whole blood. Our novel approach for assessing the impact of arsenic exposure on DNA methylation requires larger samples in order to draw more robust conclusions for specific CpG sites.
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Affiliation(s)
- Anthony DiGiovanni
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | - Kathryn Demanelis
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | - Lin Tong
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | - Maria Argos
- Division of Epidemiology and Biostatistics, University of Illinois at Chicago, Chicago, Illinois
| | - Justin Shinkle
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | - Farzana Jasmine
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | - Mekala Sabarinathan
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
| | | | - Golam Sarwar
- UChicago Research Bangladesh, Mohakhali, Dhaka, Bangladesh
| | | | - Hasan Shahriar
- UChicago Research Bangladesh, Mohakhali, Dhaka, Bangladesh
| | - Tariqul Islam
- UChicago Research Bangladesh, Mohakhali, Dhaka, Bangladesh
| | - Mahfuzar Rahman
- UChicago Research Bangladesh, Mohakhali, Dhaka, Bangladesh
- Research and Evaluation Division, BRAC, Dhaka, Bangladesh
| | - Md Yunus
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Joseph Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York
| | - Mary V Gamble
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York
| | - Habibul Ahsan
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
- Department of Human Genetics
- Comprehensive Cancer Center, The University of Chicago, Chicago, Illinois
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Brandon L Pierce
- Department of Public Health Sciences, The University of Chicago, Chicago, Illinois
- Department of Human Genetics
- Comprehensive Cancer Center, The University of Chicago, Chicago, Illinois
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70
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Amouzougan EA, Lira R, Klimecki WT. Chronic exposure to arsenite enhances influenza virus infection in cultured cells. J Appl Toxicol 2020; 40:458-469. [PMID: 31960482 PMCID: PMC7931812 DOI: 10.1002/jat.3918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 12/13/2022]
Abstract
Arsenic is a ubiquitous environmental toxicant that has been associated with human respiratory diseases. In humans, arsenic exposure has been associated with increased risk of respiratory infection. Considering the existing epidemiological evidence and the well-established impact of arsenic on epithelial cell biology, we posited that the effect of arsenic exposure in epithelial cells could enhance viral infection. In this study, we characterized influenza virus A/WSN/33 (H1N1) infection in Madin-Darby Canine Kidney (MDCK) cells chronically exposed to low levels of sodium arsenite (75 ppb). We observed a 27.3-fold increase in viral matrix (M2) protein (24 hours postinfection [p.i.]), a 1.35-fold increase in viral mRNA levels, and a 126% increase in plaque area in arsenite-exposed MDCK cells (48 hours p.i.). Arsenite exposure resulted in 114% increase in virus attachment-positive cells (2 hours p.i.) and 224% increase in α-2,3 sialic acid-positive cells. Interestingly, chronic exposure to arsenite reduced the effect of the antiviral drug, oseltamivir in MDCK cells. We also found that exposure to sodium arsenite resulted in a 4.4-fold increase in viral mRNA levels and significantly increased cytotoxicity in influenza A/Udorn/72 (H3N2) infected BEAS-2B cells. This study suggests that chronic arsenite exposure could result in enhanced influenza infection in epithelial cells, and that this may be mediated through increased sialic acid binding. Finally, the decreased effectiveness of the anti-influenza drug, oseltamivir, in arsenite-exposed cells raises substantial public health concerns if this effect translates to arsenic-exposed, influenza-infected people.
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Affiliation(s)
- Eva A. Amouzougan
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85724, United States
| | - Ricardo Lira
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85724, United States
| | - Walter T. Klimecki
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85724, United States
- College of Veterinary Medicine, The University of Arizona, Tucson, Arizona 85724, United States
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71
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Khan KM, Chakraborty R, Bundschuh J, Bhattacharya P, Parvez F. Health effects of arsenic exposure in Latin America: An overview of the past eight years of research. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136071. [PMID: 31918184 PMCID: PMC7063974 DOI: 10.1016/j.scitotenv.2019.136071] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 11/22/2019] [Accepted: 12/09/2019] [Indexed: 05/03/2023]
Abstract
Studies conducted over the past eight years in Latin America (LA) have continued to produce new knowledge regarding health impacts of arsenic (As) in drinking water. We conducted a systematic review of 92 peer-reviewed English articles published between 2011 and 2018 to expand our understanding on these health effects. Majority of the LA studies on As have been conducted in Chile and Mexico. Additional data have emerged from As-exposed populations in Argentina, Bolivia, Brazil, Colombia, Ecuador, and Uruguay. The present review has documented recent data on the biomarkers of As exposure, genetic susceptibility and genotoxicity, and risk assessment to further characterize the health effects and exposed populations. Some recent findings on the associations of As with bladder and lung cancers, reproductive outcomes, and declined cognitive performance have been consistent with what we reported in our previous systematic review article. We have found highly convincing evidence of in utero As exposure as a significant risk factor for several health outcomes, particularly for bladder cancer, even at moderate level. New data have emerged regarding the associations of As with breast and laryngeal cancers as well as type 2 diabetes. We observed early life As exposure to be associated with kidney injury, carotid intima-media thickness, and various pulmonary outcomes in children. Other childhood effects such as low birth weight, low gestational age, anemia, increased apoptosis, and decreased cognitive functions were also reported. Studies identified genetic variants of As methyltransferase that could determine susceptibility to As related health outcomes. Arsenic-induced DNA damage and alteration of gene and protein expression have also been reported. While the scope of research is still vast, the substantial work done on As exposure and its health effects in LA will help direct further large-scale studies for more comprehensive knowledge and plan appropriate mitigation strategies.
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Affiliation(s)
- Khalid M Khan
- Department of Environmental and Occupational Health, School of Public Health, Indiana University-Bloomington, Indiana, USA.
| | - Rishika Chakraborty
- Department of Environmental and Occupational Health, School of Public Health, Indiana University-Bloomington, Indiana, USA.
| | - Jochen Bundschuh
- School of Civil Engineering and Surveying, University of Southern Queensland, West Street, Toowoomba, 4350, Queensland, Australia; UNESCO Chair on Groundwater Arsenic within the 2030 Agenda for Sustainable Development, University of Southern Queensland, West Street, Toowoomba, 4350, Queensland, Australia.
| | - Prosun Bhattacharya
- KTH-International Groundwater Arsenic Research Group, Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Teknikringen 10B, SE-100 44 Stockholm, Sweden.
| | - Faruque Parvez
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, USA.
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72
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Overexpression of NRF1-742 or NRF1-772 Reduces Arsenic-Induced Cytotoxicity and Apoptosis in Human HaCaT Keratinocytes. Int J Mol Sci 2020; 21:ijms21062014. [PMID: 32188015 PMCID: PMC7139366 DOI: 10.3390/ijms21062014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/26/2020] [Accepted: 03/12/2020] [Indexed: 02/06/2023] Open
Abstract
Increasing evidence indicates that human exposure to inorganic arsenic causes cutaneous diseases and skin cancers. Nuclear factor erythroid 2-like 1 (NRF1) belongs to the cap “n” collar (CNC) basic-region leucine zipper (bZIP) transcription factor family and regulates antioxidant response element (ARE) genes. The human NRF1 gene is transcribed into multiple isoforms, which contain 584, 616, 742, 761, or 772 amino acids. We previously demonstrated that the long isoforms of NRF1 (i.e., NRF1-742, NRF1-761 and NRF1-772) are involved in the protection of human keratinocytes from acute arsenic cytotoxicity by enhancing the cellular antioxidant response. The aim of the current study was to investigate the roles of NRF1-742 and NRF1-772 in the arsenic-induced antioxidant response and cytotoxicity. We found that overexpression of NRF1-742 or NRF1-772 in human HaCaT keratinocytes decreased susceptibility to arsenic-induced apoptosis and cytotoxicity. In addition, we characterized the different protein bands observed for NRF1-742 and NRF1-772 by western blotting. The posttranslational modifications and nuclear translocation of these isoforms differed and were partially affected by arsenic exposure. Antioxidant protein levels were increased in the NRF1-742 and NRF1-772-overexpressing cell lines. The upregulation of antioxidant protein levels was partly due to the translation of nuclear factor erythroid 2-like 2 (NRF2) and its increased nuclear transport. Overall, overexpression of NRF1-742 and NRF1-772 protected HaCaT cells from arsenic-induced cytotoxicity, mainly through translational modifications and the promotion of antioxidant gene expression.
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73
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Vicuña L, Fernandez MI, Vial C, Valdebenito P, Chaparro E, Espinoza K, Ziegler A, Bustamante A, Eyheramendy S. Adaptation to Extreme Environments in an Admixed Human Population from the Atacama Desert. Genome Biol Evol 2020; 11:2468-2479. [PMID: 31384924 PMCID: PMC6733355 DOI: 10.1093/gbe/evz172] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2019] [Indexed: 12/11/2022] Open
Abstract
Inorganic arsenic (As) is a toxic xenobiotic and carcinogen associated with severe health conditions. The urban population from the Atacama Desert in northern Chile was exposed to extremely high As levels (up to 600 µg/l) in drinking water between 1958 and 1971, leading to increased incidence of urinary bladder cancer (BC), skin cancer, kidney cancer, and coronary thrombosis decades later. Besides, the Andean Native-American ancestors of the Atacama population were previously exposed for millennia to elevated As levels in water (∼120 µg/l) for at least 5,000 years, suggesting adaptation to this selective pressure. Here, we performed two genome-wide selection tests—PBSn1 and an ancestry-enrichment test—in an admixed population from Atacama, to identify adaptation signatures to As exposure acquired before and after admixture with Europeans, respectively. The top second variant selected by PBSn1 was associated with LCE4A-C1orf68, a gene that may be involved in the immune barrier of the epithelium during BC. We performed association tests between the top PBSn1 hits and BC occurrence in our population. The strongest association (P = 0.012) was achieved by the LCE4A-C1orf68 variant. The ancestry-enrichment test detected highly significant signals (P = 1.3 × 10−9) mapping MAK16, a gene with important roles in ribosome biogenesis during the G1 phase of the cell cycle. Our results contribute to a better understanding of the genetic factors involved in adaptation to the pathophysiological consequences of As exposure.
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Affiliation(s)
- Lucas Vicuña
- Department of Statistics, Faculty of Mathematics, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mario I Fernandez
- Department of Urology, Clínica Alemana, Santiago, Chile.,Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Cecilia Vial
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | | | | | | | - Annemarie Ziegler
- Center for Genetics and Genomics, Faculty of Medicine, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | | | - Susana Eyheramendy
- Department of Statistics, Faculty of Mathematics, Pontificia Universidad Católica de Chile, Santiago, Chile.,Faculty of Engineering and Sciences, Universidad Adolfo Ibañez, Peñalolén, Santiago, Chile
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74
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López JF, Fernández MI, Coz LF. Arsenic exposure is associated with significant upper tract urothelial carcinoma health care needs and elevated mortality rates. Urol Oncol 2020; 38:638.e7-638.e13. [PMID: 32088105 DOI: 10.1016/j.urolonc.2020.01.014] [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: 10/25/2019] [Revised: 01/12/2020] [Accepted: 01/27/2020] [Indexed: 01/12/2023]
Abstract
PURPOSE The aim of the study was to assess upper tract urothelial carcinoma (UTUC) health care needs and specific mortality rates in an arsenic-exposed region in Northern Chile and compare them to those of the rest of the country. MATERIAL AND METHODS Arsenic levels of drinking water were correlated with UTUC hospital discharges and cancer-specific mortality rates. Mortality and hospital admission rate ratios were estimated using a Poisson regression model. RESULTS There were 257 UTUC-specific deaths in Chile between 1990 and 2016; 81 (34%) of them occurred in Antofagasta, where only 3.5% of the population lives. The peak mortality rate observed in Antofagasta was 2.15/100,000 compared to 0.07/100,000 in the rest of the country. Mortality in the exposed region was significantly higher when compared to the rest of the country (MRR 17.6; 95%CI: 13.5-22.9). The same trend was observed for UTUC hospital discharges (RR 14.8; 95%CI: 11.5-19.1). CONCLUSION Even stronger than for bladder cancer, exposure to arsenic is related to a significant need for UTUC health care and high mortality rates, even 25 years after having controlled arsenic levels in drinking-water. Awareness of this ecologic factor in these affected regions is therefore mandatory.
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Affiliation(s)
| | - Mario I Fernández
- Department of Urology, Clínica Alemana de Santiago,Santiago, Chile; Faculty of Medicine, Clínica Alemana Universidad del Desarrollo, Santiago, Chile.
| | - Luis Fernando Coz
- Department of Urology, Hospital Militar de Santiago, Santiago, Chile; Faculty of Medicine, Universidad de Los Andes, Santiago, Chile
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75
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Belitskiy GA, Kirsanov KI, Lesovaya EA, Yakubovskaya MG. Drug-Related Carcinogenesis: Risk Factors and Approaches for Its Prevention. BIOCHEMISTRY (MOSCOW) 2020; 85:S79-S107. [PMID: 32087055 DOI: 10.1134/s0006297920140059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The review summarizes the data on the role of metabolic and repair systems in the mechanisms of therapy-related carcinogenesis and the effect of their polymorphism on the cancer development risk. The carcinogenic activity of different types of drugs, from the anticancer agents to analgesics, antipyretics, immunomodulators, hormones, natural remedies, and non-cancer drugs, is described. Possible approaches for the prevention of drug-related cancer induction at the initiation and promotion stages are discussed.
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Affiliation(s)
- G A Belitskiy
- Blokhin Russian Cancer Research Center, Ministry of Health of Russian Federation, Moscow, 115478, Russia
| | - K I Kirsanov
- Blokhin Russian Cancer Research Center, Ministry of Health of Russian Federation, Moscow, 115478, Russia. .,Peoples' Friendship University of Russia, Moscow, 117198, Russia
| | - E A Lesovaya
- Blokhin Russian Cancer Research Center, Ministry of Health of Russian Federation, Moscow, 115478, Russia.,Pavlov Ryazan State Medical University, Ryazan, 390026, Russia
| | - M G Yakubovskaya
- Blokhin Russian Cancer Research Center, Ministry of Health of Russian Federation, Moscow, 115478, Russia
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76
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Abstract
PURPOSE OF REVIEW Although smoking and gender are well-established bladder cancer (BCa) risk factors, a significant interaction with other risk factors could help in the identification of patterns for early detection and prevention strategies. RECENT FINDINGS Smoking appears to be more strongly associated with BCa risk in women than in men, which could be related to differences in metabolism, smoking behavior, exposure patterns, and DNA repair mechanisms. BMI is associated with a higher risk of BCa with negligible difference between genders. The risk for BCa is increased in postmenopausal women, specifically in women with earlier menopausal age (<45 years). Other potential risk factors such as alcohol, arsenic exposure, and particulate matter inhalation seem to affect the genders differently.Female smokers experience a higher risk of disease recurrence after bacillus Calmette-Guérin therapy than their male counterparts. Lastly, smoking appears to negatively affect the outcome of radiotherapy in women, but not that of men. SUMMARY Several lines of evidence point to an interaction between smoking and gender, whereas their impact on other potential risk factors remains to be elucidated. Identifying such differential effects could allow for gender-specific prevention, early detection, and treatment strategies.
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77
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Li X, Xiao J, Huang M, Liu T, Guo L, Zeng W, Chen Q, Zhang J, Ma W. Associations of county-level cumulative environmental quality with mortality of chronic obstructive pulmonary disease and mortality of tracheal, bronchus and lung cancers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135523. [PMID: 31767293 DOI: 10.1016/j.scitotenv.2019.135523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/04/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) and tracheal, bronchus, and lung (TBL) cancers are among the leading causes of mortality worldwide. Many environmental factors have been linked to COPD and TBL cancers. This study examined the associations of cumulative environmental quality indices with COPD mortality and TBL cancers mortality, respectively. Environmental Quality Index (EQI) was constructed to represent cumulative environmental quality for the overall environment and 5 major environmental domains (e.g., air, water, built). Associations of each EQI indices with COPD mortality and TBL cancers mortality, across 3109 counties in the 48 contiguous states of the US, were examined using simultaneous autoregressive (SAR) models. Stratified analyses were conducted in females versus males and according to rural-urban continuum codes (RUCC) to assess the heterogeneity across the overall population. Overall poor environmental quality was associated with a percent difference (PD) of 0.75 [95% confidence intervals (95% CI), 0.46, 1.05] in COPD mortality and an PD of 1.22 (95% CI, 0.97, 1.46) in TBL cancers mortality. PDs were higher in females than in males for both COPD and TBL cancers. The built domain had the largest effect on COPD mortality (PD, 0.85; 95% CI, 0.58, 1.12) while the air domain had the largest effect on TBL cancers mortality (PD, 1.54; 95% CI, 1.31, 1.76). The EQI-mortality associations varied among different RUCCs, but no consistent trend was found. This result suggests that poor environmental quality, particularly poor air quality and built environment quality may increase the mortality risk for COPD and that for TBL cancers. Females appear to be more susceptible to the effect of cumulative environmental quality. Our findings highlight the importance of improving overall and domain-specific cumulative environmental quality in reducing COPD and TBL cancer mortalities in the United States.
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Affiliation(s)
- Xing Li
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China; Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
| | - Jianpeng Xiao
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
| | - Miaoling Huang
- Department of Obstetrics and Gynecology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510120, China
| | - Tao Liu
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
| | - Lingchuan Guo
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
| | - Weilin Zeng
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
| | - Qing Chen
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Junfeng Zhang
- Nicholas School of the Environment & Duke Global Health Institute, Duke University, Durham, NC 27705, USA; Duke Kunshan University, Kunshan, Jiangsu Province 215316, China.
| | - Wenjun Ma
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China.
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78
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Li GH, Li AL, Chen XM, Zhang LY, Wang T, Wang XN, Shen T. Naturally-derived diterpenoid sphaeropsidin C as an activator of Nrf2/ARE pathway and its potential capability of relieving intracellular oxidative stress in human lung epithelial cells. Biomed Pharmacother 2020; 121:109669. [DOI: 10.1016/j.biopha.2019.109669] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/04/2019] [Accepted: 10/14/2019] [Indexed: 10/25/2022] Open
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79
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Smits JE, Krohn RM, Akhtar E, Hore SK, Yunus M, Vandenberg A, Raqib R. Food as medicine: Selenium enriched lentils offer relief against chronic arsenic poisoning in Bangladesh. ENVIRONMENTAL RESEARCH 2019; 176:108561. [PMID: 31299617 DOI: 10.1016/j.envres.2019.108561] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
Chronic arsenic (As) exposure is a major environmental threat to human health affecting >100 million people worldwide. Low blood selenium (Se) increases the risk of As-induced health problems. Our aim was to reduce As toxicity through a naturally Se-rich lentil diet. In a randomized, double-blind, placebo-control trial in Bangladesh, 405 participants chronically exposed to As were enrolled. The intervention arm (Se-group) consumed Se-rich lentils (55 μg Se/day); the control arm received lentils of similar nutrient profile except with low Se (1.5 μg Se/day). Anthropometric measurements, blood, urine and stool samples, were taken at baseline, 3 and 6 months; hair at baseline and 6 months after intervention. Morbidity data were collected fortnightly. Measurements included total As in all biological samples, As metabolites in urine, and total Se in blood and urine. Intervention with Se-rich lentils resulted in higher urinary As excretion (p = 0.001); increased body mass index (p ≤ 0.01), and lower incidence of asthma (p = 0.05) and allergy (p = 0.02) compared to the control group. The Se-group demonstrated increased excretion of urinary As metabolite, dimethylarsinic acid (DMA) at 6 months compared to control group (p = 0.008). Consuming Se-rich lentils can increase As excretion and improve the health indicators in the presence of continued As exposure.
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Affiliation(s)
- Judit E Smits
- Department of Ecosystem & Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive, Calgary, AB T2N 4Z6, Canada
| | - Regina M Krohn
- Department of Ecosystem & Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive, Calgary, AB T2N 4Z6, Canada
| | - Evana Akhtar
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Samar Kumar Hore
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Md Yunus
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Albert Vandenberg
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Rubhana Raqib
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh.
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80
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Burotto M, Aren O, Renner A, Samtani S, Jimenez de la Jara J. Lung Cancer in Chile. J Thorac Oncol 2019; 14:1504-1509. [PMID: 31445729 DOI: 10.1016/j.jtho.2019.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 02/25/2019] [Accepted: 02/26/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Mauricio Burotto
- Medical Oncology Department, Clínica Universidad Los Andes, Centro de Investigación Clínica Bradford Hill, Santiago, Chile.
| | - Osvaldo Aren
- Centro de Investigación Clínica Bradford Hill, Santiago Chile
| | - Alex Renner
- Medical Oncology Department, Hospital Clinico Universidad de Chile, Santiago, Chile
| | - Suraj Samtani
- Medical Oncology Department, Clinica Alemana, Santiago, Chile
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81
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Marciniak W, Derkacz R, Muszyńska M, Baszuk P, Gronwald J, Huzarski T, Cybulski C, Jakubowska A, Falco M, Dębniak T, Lener M, Oszurek O, Pullella K, Kotsopoulos J, Sun P, Narod SA, Lubiński J. Blood arsenic levels and the risk of familial breast cancer in Poland. Int J Cancer 2019; 146:2721-2727. [PMID: 31348523 PMCID: PMC7154768 DOI: 10.1002/ijc.32595] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 06/05/2019] [Accepted: 06/18/2019] [Indexed: 12/31/2022]
Abstract
Arsenic is recognized as a potent carcinogen at high concentrations, but the relationship between environmental arsenic and breast cancer risk has not well been studied. Most research has focused on the effect of arsenic in populations with high endemic exposure, and not in populations with arsenic levels within normal limits. We sought to determine if blood arsenic levels predict the risk of breast and other cancers risk among women in northern Poland. The cohort consisted of 1,702 healthy women, aged 40 and above, identified between 2010 and 2017. Blood arsenic level was determined by inductively coupled plasma mass spectrometry. After an average of 4.5 years of follow‐up (range 0.7–7.3 years), there were 110 incident cases of cancer diagnosed in the cohort, including 68 cases of breast cancer. Women in the highest quartile of arsenic had a highly significant 13‐fold increased risk of developing breast cancer, compared to women in the lowest quartile (hazard ratio [HR] = 13.2; 95% confidence interval [CI] 4.02–43.0). Results were similar for arsenic and all incident cancers (HR quartile 4 vs. quartile 1 = 13.3; 95% CI 4.78–37.0). If confirmed, our study suggests that the blood arsenic level may be a useful predictive marker of cancer risk in women. What's new? Arsenic has long been recognized as a potent carcinogen at high concentrations. But can it affect cancer risk at “normal,” environmental concentrations? In this Polish study, the authors found that women whose blood levels of arsenic were in the highest quartile had a 13‐fold increased risk of developing breast cancer, compared to women in the lowest quartile. If confirmed in further studies, these results suggests that blood arsenic level may be a useful predictive marker of cancer risk in women.
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Affiliation(s)
- Wojciech Marciniak
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Róża Derkacz
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Magdalena Muszyńska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Piotr Baszuk
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Jacek Gronwald
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Tomasz Huzarski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland.,Department of Clinical Genetics and Pathology, University of Zielona Góra, Zielona Góra, Poland
| | - Cezary Cybulski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Anna Jakubowska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Michał Falco
- Radiation Oncology Department, West Pomeranian Oncology Center, Szczecin, Poland
| | - Tadeusz Dębniak
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
| | - Marcin Lener
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Oleg Oszurek
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | | | - Joanne Kotsopoulos
- Women's College Research Institute, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Ping Sun
- Women's College Research Institute, Toronto, Ontario, Canada
| | - Steven A Narod
- Women's College Research Institute, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Jan Lubiński
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland.,Read-Gene SA, Grzepnica, Poland
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82
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Zeng Q, Zou Z, Wang Q, Sun B, Liu Y, Liang B, Liu Q, Zhang A. Association and risk of five miRNAs with arsenic-induced multiorgan damage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 680:1-9. [PMID: 31085440 DOI: 10.1016/j.scitotenv.2019.05.042] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/01/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
Chronic exposure to arsenic remains a major environmental public health concern worldwide, affecting hundreds of millions of people. Arsenic-induced multiorgan damage and miRNA expression changes after arsenic exposure have been determined, but their associations and risks have not been fully examined. In this study, we measured the expression levels of five miRNAs in plasma from control and arsenic poisoned populations, and we analyzed the relationship between miRNAs and multiorgan damage. The results clearly show that the upregulation of miR-155 expression can increase the risk of arsenic induced skin damage (OR = 10.55; 95% CI: 6.02, 18.47); further, there is a link between the expression of miR-21 (OR = 11.84; 95% CI: 5.34, 26.28) and miR-145 (OR = 2.39; 95% CI: 1.61, 3.55) and liver damage, and miR-191 and kidney damage (OR = 3.65; 95% CI: 1.49, 8.93). In addition, we analyzed the diagnostic value of miRNAs associated with specific organ damage in arsenic-induced multiorgan damage. It was found that the miR-155 has a certain diagnostic value in arsenic-induced skin damage (AUC = 0.83), miR-21 and miR-145 have diagnostic value for liver damage (AUC = 0.80, 0.81) and miR-191 has diagnostic value for kidney damage (AUC = 0.83). This study provides the first comprehensive assessment of the association and risk of five miRNAs with arsenic-induced multiorgan damage. The study can provide a scientific basis for further understanding the causes of arsenic-induced multiorgan damage, identification of possible biological markers, and improvement of targeted prevention and control strategies.
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Affiliation(s)
- Qibing Zeng
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Zhonglan Zou
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Qingling Wang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Baofei Sun
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Yonglian Liu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Bing Liang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China
| | - Qizhan Liu
- Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, Jiangsu, China
| | - Aihua Zhang
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang 550025, China.
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83
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Fang X, Sun R, Hu Y, Wang H, Guo Y, Yang B, Pi J, Xu Y. miRNA-182-5p, via HIF2α, contributes to arsenic carcinogenesis: evidence from human renal epithelial cells. Metallomics 2019; 10:1607-1617. [PMID: 30334557 DOI: 10.1039/c8mt00251g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Chronic exposure to high levels of arsenic has been associated with high risks for many cancers, including renal cell carcinoma (RCC). However the underlying mechanisms are not clear. In the present study, chronic arsenite exposure (2 μM or 5 μM, 30 weeks) induced malignant transformation of HK-2 human renal epithelial cells as indicated by elevated colony formation (6.2- and 5.4-fold increase, respectively), secreted MMP-9 activity (10.1- and 11.3-fold increase, respectively) and proliferation rate (1.2- and 1.3-fold increase in 72 h, respectively). Lipid accumulation, typical of clear cell RCC, was observed in arsenic-transformed (As-TM) cells. Overexpression of hypoxia-inducible factor 2α (HIF2α) and suppression of carnitine palmitoyltransferase 1A (CPT1A) were found at the level of mRNA (1.5- and 0.49-fold of control, respectively) and protein (4.0- and 0.28-fold of control, respectively) after exposure to 2 μM arsenite for 20 weeks. Silencing of HIF2α significantly attenuated arsenite-induced malignant phenotypes and lipid accumulation. Inactivation of Von Hippel-Lindau (VHL) and impaired protein degradation of HIF2α were not found in As-TM cells. Expression of miR-182-5p and miR-802 in As-TM cells was 42.4% and 54.0% of control, respectively (p < 0.05). The levels of mRNA and protein of HIF2α were increased 2.4 folds and 1.6 folds of negative control in response to the miR-182-5p inhibitor, respectively, but decreased to 58.1% and 50.1% of negative control in response to miR-182-5p mimics, respectively. No significant alteration was observed in HIF2α expression when miR-802 was silenced. Our data provide further evidence for the carcinogenic role of arsenic in the kidney. Moreover, the miR-182-5p/HIF2α pathway is indicated to be involved in malignant transformation of human renal epithelial cells under arsenite exposure.
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Affiliation(s)
- Xin Fang
- School of Public Health, China Medical University, No. 77 Puhe Road, Shenbei New District, Shenyang, Liaoning, P. R. China110122.
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84
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Photocatalytic process for total arsenic removal using an innovative BiVO4/TiO2/LED system from aqueous solution: Optimization by response surface methodology (RSM). J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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85
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Huang HW, Lee CH, Yu HS. Arsenic-Induced Carcinogenesis and Immune Dysregulation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16152746. [PMID: 31374811 PMCID: PMC6696092 DOI: 10.3390/ijerph16152746] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/28/2019] [Accepted: 07/29/2019] [Indexed: 12/16/2022]
Abstract
Arsenic, a metal ubiquitously distributed in the environment, remains an important global health threat. Drinking arsenic-contaminated water is the major route of human exposure. Exposure to arsenic contributes to several malignancies, in the integumentary, respiratory, hepatobiliary, and urinary systems. Cutaneous lesions are important manifestations after long-term arsenic exposure. Arsenical skin cancers usually herald the development of other internal cancers, making the arsenic-induced skin carcinogenesis a good model to investigate the progression of chemical carcinogenesis. In fact, only a portion of arsenic-exposed humans eventually develop malignancies, likely attributed to the arsenic-impaired immunity in susceptible individuals. Currently, the exact pathophysiology of arsenic-induced carcinogenesis remains elusive, although increased reactive oxidative species, aberrant immune regulations, and chromosome abnormalities with uncontrolled cell growth might be involved. This review discusses how arsenic induces carcinogenesis, and how the dysregulated innate and adaptive immunities in systemic circulation and in the target organs contribute to arsenic carcinogenesis. These findings offer evidence for illustrating the mechanism of arsenic-related immune dysregulation in the progression of carcinogenesis, and this may help explain the nature of multiple and recurrent clinical lesions in arsenic-induced skin cancers.
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Affiliation(s)
- Hsin-Wei Huang
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Hsin-Su Yu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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86
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Tsuji JS, Chang ET, Gentry PR, Clewell HJ, Boffetta P, Cohen SM. Dose-response for assessing the cancer risk of inorganic arsenic in drinking water: the scientific basis for use of a threshold approach. Crit Rev Toxicol 2019; 49:36-84. [DOI: 10.1080/10408444.2019.1573804] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Ellen T. Chang
- Exponent, Inc., Menlo Park, CA and Stanford Cancer Institute, Stanford, CA, USA
| | | | | | - Paolo Boffetta
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Samuel M. Cohen
- Havlik-Wall Professor of Oncology, Department of Pathology and Microbiology and the Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
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87
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Davis B, McDermott S, McCarter M, Ortaglia A. Population-based mortality data suggests remediation is modestly effective in two Montana Superfund counties. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:803-816. [PMID: 30140965 DOI: 10.1007/s10653-018-0175-z] [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: 03/28/2018] [Accepted: 08/15/2018] [Indexed: 05/17/2023]
Abstract
The health effects of living in proximity to Superfund sites with ongoing remediation were evaluated for residents of two contiguous Montana counties, Deer Lodge and Silver Bow. Deer Lodge and Silver Bow are home to the Anaconda Smelter and Silver Bow Creek/Butte Area Superfund sites, respectively. Established by the Environmental Protection Agency in 1983, both sites have had ongoing remediation for decades. Employing county level death certificate data obtained from the Centers for Disease Control and Prevention WONDER site, sex and age-adjusted standardized mortality ratios (SMRs) for composite targeted causes of death were calculated using observed versus expected mortality for both counties, and compared to the expected mortality from the remaining Montana counties. Cancers, cerebro- and cardiovascular diseases (CCVD), and organ failure were elevated for the two counties during the study period, 2000-2016, with SMRs of 1.19 (95% CI 1.10, 1.29); 1.36 (95% CI 1.29, 1.43); and 1.24 (95% CI 1.10, 1.38), respectively. Neurological conditions were not elevated for the two counties (SMR = 1.01; 95% CI 0.89, 1.14). Time trend analyses performed using Cox regression models indicate that deaths from cancers (HR = 0.97; p = 0.0004), CCVDs (HR = 0.95; p ≤ 0.0001), and neurological conditions (HR = 0.97; p = 0.01) decreased over the study period. While the ecological approach applied limits the interpretation of our results, our study suggests that while mortality is elevated, it is also decreasing over time for these two Superfund sites.
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Affiliation(s)
- B Davis
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - S McDermott
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.
| | - M McCarter
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - A Ortaglia
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
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88
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Rossi M, Strikoudi P, Spei ME, Parpinel M, Serraino D, Montella M, Libra M, La Vecchia C, Rosato V. Flavonoids and bladder cancer risk. Cancer Causes Control 2019; 30:527-535. [PMID: 30903485 DOI: 10.1007/s10552-019-01158-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Flavonoids have drawn attention because of their antioxidant capacity and anti-carcinogenic effect in various types of cancer. A limited number of studies has investigated their potential effect on the risk of bladder cancer, with inconsistent results. METHODS We analyzed data from an Italian case-control study including 690 incident bladder cancer cases and 665 controls admitted to the same network of hospitals for acute, non-neoplastic, non tobacco-related diseases. Subjects were interviewed using a reproducible and validated food-frequency questionnaire. We applied data on food and beverage composition to estimate the intake of isoflavones, anthocyanidins, flavan-3-ols, flavanones, flavones and flavonols. We estimated odds ratios (ORs) through multiple logistic regression models, including terms for potential confounding factors, including tobacco smoking and total energy intake. RESULTS We found an inverse association between isoflavones (OR for the highest compared to the lowest quintile of intake = 0.56, 95% CI 0.37-0.84) and flavones (OR = 0.64, 95% CI 0.44-0.95) and bladder cancer. Non-significant inverse association was found for flavan-3-ols (OR = 0.70), flavonols (OR = 0.85) and total flavonoids (OR = 0.76). The results were consistent for non-muscle-invasive and muscle-invasive bladder cancers. CONCLUSIONS Our data indicate an inverse association between isoflavones and flavones with respect to bladder cancer risk.
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Affiliation(s)
- Marta Rossi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via A. Vanzetti 5, 20133, Milan, Italy
| | - Panagiota Strikoudi
- Department of Nutrition and Dietetics, Faculty of Agriculture Technology, Food Technology and Nutrition, Alexander Technological Educational Institution of Thessaloniki, P.C. 57400, Sindos, Thessaloniki, Greece
| | - Maria-Eleni Spei
- Department of Hygiene, Epidemiology, and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 75 M. Asias Street, 115 27, Goudi, Athens, Greece
| | - Maria Parpinel
- Department of Medicine, Università degli Studi di Udine, Via Colugna 50, 33100, Udine, Italy
| | - Diego Serraino
- Cancer Epidemiology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Centro di Riferimento Oncologico, Via F. Gallini 2, 33081, Aviano (PN), Italy
| | - Maurizio Montella
- Unit of Epidemiology, Istituto Nazionale Tumori Fondazione G. Pascale, Via M. Semmola 1, 80131, Napoli, Italy
| | - Massimo Libra
- Section of Oncologic, Clinic and General Pathology, Department of Biomedical & Biotechnological Sciences, Università degli Studi di Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via A. Vanzetti 5, 20133, Milan, Italy
| | - Valentina Rosato
- Unit of Medical Statistics and Biometry, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Via G. Venezian 1, 20133, Milano, Italy.
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89
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De Loma J, Tirado N, Ascui F, Levi M, Vahter M, Broberg K, Gardon J. Elevated arsenic exposure and efficient arsenic metabolism in indigenous women around Lake Poopó, Bolivia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 657:179-186. [PMID: 30537579 DOI: 10.1016/j.scitotenv.2018.11.473] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/30/2018] [Accepted: 11/30/2018] [Indexed: 05/12/2023]
Abstract
Elevated concentrations of inorganic arsenic, one of the most potent environmental toxicants and carcinogens, have been detected in well water around Lake Poopó, Bolivia. This study aimed to assess human exposure to arsenic in villages around Lake Poopó, and also to elucidate whether the metabolism and detoxification of arsenic in this population is as efficient as previously indicated in other Andean areas. We recruited 201 women from 10 villages around Lake Poopó. Arsenic exposure was determined as the sum concentration of arsenic metabolites (inorganic arsenic; monomethylarsonic acid, MMA; and dimethylarsinic acid, DMA) in urine (U-As), measured by HPLC-HG-ICP-MS. Efficiency of arsenic metabolism was assessed by the relative fractions of the urinary metabolites. The women had a wide variation in U-As (range 12-407 μg/L, median 65 μg/L) and a markedly efficient metabolism of arsenic with low %MMA (median 7.7%, range: 2.2-18%) and high %DMA (80%, range: 54-91%) in urine. In multivariable-adjusted linear regression models, ethnicity (Aymara-Quechua vs. Uru), body weight, fish consumption and tobacco smoking were associated with urinary arsenic metabolite fractions. On average, the Uru women had 2.5 lower % (percentage unit) iAs, 2.2 lower %MMA and 4.7 higher %DMA compared with the Aymara-Quechua women. Our study identified several factors that may predict these women's arsenic methylation capacity, particularly ethnicity. Further studies should focus on mechanisms underlying these differences in arsenic metabolism efficiency, and its importance for the risk of arsenic-related health effects.
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Affiliation(s)
- Jessica De Loma
- Institute of Environmental Medicine, Unit of Metals and Health, Karolinska Institutet, Stockholm, Sweden
| | - Noemi Tirado
- Genetics Institute, Genotoxicology Unit, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Franz Ascui
- Programa de Salud Familiar Comunitaria e Intercultural (SAFCI), Ministerio de Salud Bolivia, Bolivia
| | - Michael Levi
- Institute of Environmental Medicine, Unit of Metals and Health, Karolinska Institutet, Stockholm, Sweden
| | - Marie Vahter
- Institute of Environmental Medicine, Unit of Metals and Health, Karolinska Institutet, Stockholm, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Unit of Metals and Health, Karolinska Institutet, Stockholm, Sweden.
| | - Jacques Gardon
- Hydrosciences Montpellier, Institut de Recherche pour le Développement, CNRS, University of Montpellier, France
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90
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Zhou MX, Li GH, Wu XY, Sun L, Li YR, Yang WJ, Ren DM, Wang XN, Xiang L, Lou HX, Shen T. (2S)-5,6,7,3′,4′-pentamethoxyflavanone, a citrus polymethoxyflavone ameliorates arsenic- and cigarette smoke extract-induced cytotoxicity via activating Nrf2-mediated defense system. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.01.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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91
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Gianicolo EAL, Mangia C, Cervino M, Bruni A, Portaluri M, Comba P, Pirastu R, Biggeri A, Vigotti M, Blettner M. Long-term effect of arsenic exposure: Results from an occupational cohort study. Am J Ind Med 2019; 62:145-155. [PMID: 30609098 DOI: 10.1002/ajim.22939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND In 1976 in Manfredonia (Italy), arsenic was released into the atmosphere due to an accident in a petrochemical plant. We aimed to analyze the mortality of workers involved in the factory for the site cleaning activities. METHODS The cohort consisted of 1467 workers grouped into contract, fertilizer, and plastic workers. The outcome of interest was mortality for specific causes. Standardized mortality ratios (SMR) and 95% confidence intervals (95%CI) were computed. RESULTS For all workers and all causes of death combined, the SMR was less than 1.0. Mortality ratios were increased for malignant neoplasms of the pleura, bone and melanoma of the skin. Contract workers, the group mostly exposed to arsenic, showed statistically significant SMRs for several malignancies, in particular for lung cancer (SMR = 1.26; 95%CI: 1.05-1.54). CONCLUSIONS Overall, the results reported here on mortality among persons occupationally exposed to arsenic are consistent with the literature and biologically plausible.
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Affiliation(s)
- Emilio Antonio L. Gianicolo
- Italian National Research Council; Institute of Clinical Physiology; Lecce Italy
- University of Mainz; Institute of medical Biostatistics, Epidemiology and Informatics; Mainz Germany
| | - Cristina Mangia
- Italian National Research Council; Institute of Atmospheric Sciences and Climate; Lecce Italy
| | - Marco Cervino
- Italian National Research Council; Institute of Atmospheric Sciences and Climate; Bologna Italy
| | - Antonella Bruni
- Epidemiological and Statistical Unit; Azienda Sanitaria Locale; Taranto Italy
| | | | - Pietro Comba
- Department of Environment and Health; Istituto Superiore di Sanità; Rome Italy
| | | | - Annibale Biggeri
- Department of Statistics, Computer Science, Applications; University of Florence; Florence Italy
- Epidemiologia e Prevenzione Social Enterprise; Torino Italy
| | - Mariangela Vigotti
- Italian National Research Council; Institute of Clinical Physiology; Lecce Italy
| | - Maria Blettner
- University of Mainz; Institute of medical Biostatistics, Epidemiology and Informatics; Mainz Germany
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92
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Rahman M, Sohel N, Yunus FM, Alam N, Nahar Q, Streatfield PK, Yunus M. Arsenic exposure and young adult's mortality risk: A 13-year follow-up study in Matlab, Bangladesh. ENVIRONMENT INTERNATIONAL 2019; 123:358-367. [PMID: 30562707 DOI: 10.1016/j.envint.2018.12.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 12/04/2018] [Accepted: 12/04/2018] [Indexed: 05/27/2023]
Abstract
BACKGROUND Widespread arsenic contamination in underground water is a well-documented public health concern that threatens millions of lives worldwide. We investigated the risk of young-adult mortality due to high chronic exposure to arsenic through years of drinking arsenic contaminated water. METHODS A prospective cohort study of 58,406 individuals was enrolled who were 4-18 years at baseline. Since Matlab HDSS (Health and Demographic Surveillance System) has an active surveillance system, all individuals were included in the follow up. Each individual's arsenic exposure was calculated at (1) baseline As level as current exposure (2) time-weighted lifetime (average or lifetime average) and (3) cumulative arsenic exposure. Age, sex, educational attainment and SES were adjusted during the analysis. In this 13 years closed-cohort study (2003-2015), all young-adult deaths were captured through verbal autopsy (VA) using International Classification of Diseases (ICD-10) to define the causes. RESULTS Although, girls had higher values of cumulative arsenic exposure via tube well water than boys (median: 1858.5 μg/year/L vs. 1798.8 μg/year/L) but higher mortality due to cancers and due to cerebro-vascular disease, cardio-vascular disease, and respiratory disease (7.0 vs. 5.7 per 100,000 person-years and 6.4 vs. 4.2 per 100,000 person-years respectively). Higher risk of deaths among young adults (Adjusted HR: 2.7, 1.3-5.8) due to all cancers among those who were exposed to As > 138.7 compared to As ≤ 1.1 μg/L. For cerebro-vascular disease, cardio-vascular disease, and respiratory disease deaths, average arsenic in well water (>223.1 μg/L vs. ≤90.9 μg/L) and cumulative arsenic in well water (>2711.0 μg/year/L vs. ≤1013.3 μg/year/L) had 4.8 (1.8-12.8) and 5.1 (1.7-15.1) times higher risks of mortality than to those lowest exposed. CONCLUSION Higher concentration of, and chronic exposure to arsenic in drinking water, increases the mortality risk among the young adults, regardless of gender.
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Affiliation(s)
- Mahfuzar Rahman
- Research and Evaluation Division, BRAC, BRAC Centre, 75 Mohakhali, Dhaka 1212, Bangladesh.
| | - Nazmul Sohel
- Department of Health Research Methods, Evidence and Impact, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Fakir Md Yunus
- Research and Evaluation Division, BRAC, BRAC Centre, 75 Mohakhali, Dhaka 1212, Bangladesh
| | - Nurul Alam
- ICDDRB, 68 Shahid Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | - Qamrun Nahar
- ICDDRB, 68 Shahid Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
| | | | - Mohammad Yunus
- ICDDRB, 68 Shahid Tajuddin Ahmed Sarani, Mohakhali, Dhaka 1212, Bangladesh
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93
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Yamauchi H, Takata A. Past and Current Arsenic Poisonings. CURRENT TOPICS IN ENVIRONMENTAL HEALTH AND PREVENTIVE MEDICINE 2019. [DOI: 10.1007/978-981-13-2565-6_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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94
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Bradley WG, Andrew AS, Traynor BJ, Chiò A, Butt TH, Stommel EW. Gene-Environment-Time Interactions in Neurodegenerative Diseases: Hypotheses and Research Approaches. Ann Neurosci 2018; 25:261-267. [PMID: 31000966 DOI: 10.1159/000495321] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS), Alzheimer's, and Parkinson's diseases are age-related neurodegenerative diseases. ALS is not a single entity but a syndrome with many different causes. In all 3 diseases, gene mutations account for only 10-15% of cases. Many environmental and lifestyle factors have been implicated as risk factors for ALS, though none have been proven to cause the disease. It is generally believed that ALS results from interactions between environmental risk factors and genetic predisposing factors. The advent of next-generation sequencing and recent advances in research into environmental risk factors offer the opportunity to investigate these interactions. Summary We propose a hypothesis to explain the syndrome of ALS based on the interaction of many individual environmental risk factors with many individual genetic predisposing factors. We hypothesize that there are many such combinations of individual, specific, genetic, and environmental factors, and that each combination can lead to the development of the syndrome of ALS. We also propose a hypothesis that explains the overlap between the age-related neurodegenerations and their genetic underpinnings. Age and duration of exposure are crucial factors in these age-related neurodegenerative diseases, and we consider how these may relate to gene-environment interactions. Key Messages To date, genetic studies and environmental studies have investigated the causes of ALS separately. We argue that this univariate approach will not lead to discoveries of important gene-environment interactions. We propose new research approaches to investigating gene-environment interactions based on these hypotheses.
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Affiliation(s)
- Walter G Bradley
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Angeline S Andrew
- Department of Neurology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Bryan J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute of Aging, National Institutes of Health, Bethesda, Maryland, USA.,Department of Neurology, Johns Hopkins University, Baltimore, Maryland, USA
| | - Adriano Chiò
- "Rita Levi Montalcini" Department of Neuroscience, University of Turin, Turin, Italy
| | - Tanya H Butt
- Department of Neurology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Elijah W Stommel
- Department of Neurology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
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Roh T, Steinmaus C, Marshall G, Ferreccio C, Liaw J, Smith AH. Age at Exposure to Arsenic in Water and Mortality 30-40 Years After Exposure Cessation. Am J Epidemiol 2018; 187:2297-2305. [PMID: 30084889 PMCID: PMC6211243 DOI: 10.1093/aje/kwy159] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 07/20/2018] [Accepted: 07/24/2018] [Indexed: 12/25/2022] Open
Abstract
Arsenic in drinking water is known to cause cancer and noncancer diseases, but little is known about its association with age at exposure. Here, we investigated age at arsenic exposure and mortality in Antofagasta, Chile, 30-40 years after a distinct period of very high water arsenic concentrations (1958-1970). We calculated standardized mortality ratios (SMRs) comparing Antofagasta with the rest of Chile for 2001-2010 by sex and age at potential first exposure. A remarkable relationship with age at first exposure was found for bronchiectasis, with increased risk in adults 30-40 years after exposure being confined to those who were in utero (SMR = 11.7, 95% confidence interval (CI): 4.3, 25.4) or aged 1-10 years (SMR = 5.4, 95% CI: 1.1, 15.8) during the high-exposure period. Increased SMRs for lung, bladder, and laryngeal cancer were evident for exposures starting at all ages, but the highest SMRs were for exposures beginning at birth (for bladder cancer, SMR = 16.0 (95% CI: 10.3, 23.8); for laryngeal cancer, SMR = 6.8 (95% CI: 2.2, 15.8); for lung cancer, SMR = 3.8 (95% CI: 2.9, 4.9)). These findings suggest that interventions targeting early-life arsenic exposure could have major impacts in reducing long-term mortality due to arsenic 30-40 years after exposure ends.
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Affiliation(s)
- Taehyun Roh
- Arsenic Health Effects Research Group, School of Public Health, University of California, Berkeley, Berkeley, California
| | - Craig Steinmaus
- Arsenic Health Effects Research Group, School of Public Health, University of California, Berkeley, Berkeley, California
| | - Guillermo Marshall
- Departamento de Estadística, Facultad de Matemáticas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Catterina Ferreccio
- Advanced Center for Chronic Diseases, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jane Liaw
- Arsenic Health Effects Research Group, School of Public Health, University of California, Berkeley, Berkeley, California
| | - Allan H Smith
- Arsenic Health Effects Research Group, School of Public Health, University of California, Berkeley, Berkeley, California
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96
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Giovannucci E. Nutritional epidemiology and cancer: A Tale of Two Cities. Cancer Causes Control 2018; 29:1007-1014. [PMID: 30291578 DOI: 10.1007/s10552-018-1088-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 09/28/2018] [Indexed: 12/14/2022]
Abstract
Recently, Ioannidis questioned whether nutritional epidemiology could be reconciled with good scientific principles, and suggested that the field needs radical reform. One of the reforms he advocated was more randomized trials; though what diet would be tested and how it would be measured were unspecified, how adherence would be monitored was unclear or unimportant, and the length of time vaguely stated as "lifelong". The other reform was reanalysis of shared data, which actually already exists in a large number of cohort consortia of individual pooled data. The 2018 report analysis of diet and cancer from the World Cancer Fund/American Institute of Cancer Research presents a sharply different picture of our knowledge of nutrition and cancer, which has evolved immensely in the past 3 decades. Based on current knowledge, factors related to energy balance, encompassed by body mass anthropometric measures might account for about 10-15% of the U.S. cancer burden. This 10-15% encompasses physical activity and obesogenic effects of diet. About 5% may be attributable to alcohol, and another 5% to specific dietary factors combined (e.g., red and processed meat, whole grains, fiber, calcium, fruits, and vegetables). Surrogates such as attained height and age at menarche are influenced by nutrition and are consistent risk factors for cancer, supporting the importance of early nutrition. Recent data suggest that early life dietary patterns, which may be modifiable, may be important. Though important questions remain, our understanding of nutrition and cancer over the life course is coherent and has been informed by nutritional epidemiology and other data.
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97
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Guo X, Chen X, Wang J, Liu Z, Gaile D, Wu H, Yu G, Mao G, Yang Z, Di Z, Guo X, Cao L, Chang P, Kang B, Chen J, Gao W, Ren X. Multi-generational impacts of arsenic exposure on genome-wide DNA methylation and the implications for arsenic-induced skin lesions. ENVIRONMENT INTERNATIONAL 2018; 119:250-263. [PMID: 29982128 PMCID: PMC6143427 DOI: 10.1016/j.envint.2018.06.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 05/19/2023]
Abstract
As a nonmutagenic human carcinogen, arsenic (As)'s carcinogenic activity is likely the result of epigenetic changes, particularly alterations in DNA methylation. While increasing studies indicate a potentially important role for timing of As exposure on DNA methylation patterns and the subsequent differential risks for As toxicity and carcinogenesis, there is a lack of research that tackles these critical questions, particularly in human based populations. Here we reported a family-based study including three generations, in which each generation living in the same household had a distinctive timing of As exposure: in adulthood, in utero and during early childhood, and in germlines exposure for grandparents, parents, and grandchildren, respectively. We generated genome-wide DNA methylation data for 18 As-exposed families, nine control families, as well as 18 arsenical skin lesion patients. Our analysis showed that As exposure may leave detectable DNA methylation changes even though exposure occurred decades ago, and the most significant changes of global DNA methylation were observed among patients afflicted with arsenical skin lesions. As exposure across generations shared common differentially methylated DNA loci and regions (744 DML and 15 DMRs) despite the distinctive exposure timing in each generation. Importantly, based on these DML, clustering analysis grouped skin lesion patients together with grandparents in exposed families in the same cluster, separated from grandparents in control families. Further analysis identified a number of DML and several molecular pathways that were significantly distinguished between controls, exposed populations, as well as skin lesion patients. Finally, our exploratory analysis suggested that some of these DML altered by As exposure, may have the potential to be inherited affecting not only those directly exposed but also later generations. Together, our results suggest that common DML and/or DMRs associated with an increased risk for disease development could be identified regardless of when exposure to As occurred during their life span, and thus may be able to serve as biomarkers for identifying individuals at risk for As-induced skin lesions and possible cancers.
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Affiliation(s)
- Xiaojuan Guo
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China; School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xushen Chen
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Jie Wang
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Zhiyue Liu
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Daniel Gaile
- Department of Biostatistics, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Hongmei Wu
- School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guan Yu
- Department of Biostatistics, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA
| | - Guangyun Mao
- School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zuopeng Yang
- Center for Disease Control and Prevention, Wuyuan County, Inner Mongolia, China
| | - Zhen Di
- Center for Disease Control and Prevention, Hangjinhouqi County, Inner Mongolia, China
| | - Xiuqing Guo
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Li Cao
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Peiye Chang
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Binxian Kang
- Center for Disease Control and Prevention, Wuyuan County, Inner Mongolia, China
| | - Jinyu Chen
- Center for Disease Control and Prevention, Wuyuan County, Inner Mongolia, China
| | - Wen Gao
- Center for Disease Control and Prevention, Wuyuan County, Inner Mongolia, China
| | - Xuefeng Ren
- School of Public Health, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China; Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA.
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98
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Twaddle NC, Vanlandingham M, Beland FA, Doerge DR. Metabolism and disposition of arsenic species after repeated oral dosing with sodium arsenite in drinking water. II. Measurements in pregnant and fetal CD-1 mice. Food Chem Toxicol 2018. [PMID: 29530638 DOI: 10.1016/j.fct.2018.03.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Arsenic is ubiquitous in the earth's crust, and human diseases are linked with exposures that are similar to dietary intake estimates. Metabolic methylation of inorganic arsenic facilitates excretion of pentavalent metabolites and decreases acute toxicity; however, tissue binding of trivalent arsenic intermediates is evidence for concomitant metabolic activation. Pregnant and fetal CD-1 mice comprise a key animal model for arsenic carcinogenesis since adult-only exposures have minimal effects. This study evaluated inorganic arsenic and its metabolites in pentavalent and trivalent states in blood and tissues from maternal and fetal CD-1 mice after repeated administration of arsenite through drinking water. After 8 days of exposure, DMA species were ubiquitous in dams and fetuses. Despite the presence of MMAIII in dams, none was observed in any fetal sample. This difference may be important in assessing fetal susceptibility to arsenic toxicity because MMA production has been linked with human disease. Binding of DMAIII in fetal tissues provided evidence for metabolic activation, although the role for such binding in arsenic toxicity is unclear. This study provides links between administered dose, metabolism, and internal exposures from a key animal model of arsenic toxicity to better understand risks from human exposure to environmental arsenic.
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Affiliation(s)
- Nathan C Twaddle
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
| | - Michelle Vanlandingham
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States
| | - Daniel R Doerge
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, United States.
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