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Oftadeh Harsin A, Firozian F, Soleimani M, Mehri F, Ranjbar A. Evaluation of Ascorbic Acid Niosomes as Potential Detoxifiers in Oxidative Stress-induced HEK-293 Cells by Arsenic Trioxide. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2022; 21:e127038. [PMID: 36710993 PMCID: PMC9872552 DOI: 10.5812/ijpr-127038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 01/30/2022] [Accepted: 02/13/2022] [Indexed: 02/01/2023]
Abstract
Background As an environmental contaminant, Arsenic (As) poses many risks to human health. Increased Oxidative Stress (OS) and decreased antioxidant cell defense are the suggested mechanisms of carcinogenicity and toxicity of As. As a powerful antioxidant and water-soluble compound, vitamin C protects cells and tissues against oxidation and has a wide range of healing properties. Objectives The current study aimed to formulate a suitable ascorbic acid (vitamin C) niosome and compare it with vitamin C in preventing As-induced toxicity in HEK-293 cells. Methods Various formulas of vitamin C niosomes were prepared by C-SPAN mixed with cholesterol. The physicochemical characteristics of niosomal formulations, including load size, zeta-potential, and the drug release profile, were evaluated in HEK-293 cells. Then, OS biomarkers such as total reactive oxygen species (ROS), malondialdehyde (MDA), catalase (CAT), Antioxidant Capacity (TAC), and superoxide dismutase (SOD) activities determined the protective effects of vitamin C niosomes compared with vitamin C against As-induced toxicity. Results The particle size and zeta potential of the optimal vitamin C niosome were 163.2 ± 6.1 nm and 23.3 ± 3.5 mV, respectively. Arsenic increased ROS and MDA levels while decreasing CAT, TAC, and SOD activities in the HEK-293 cell line. Finally, the vitamin C niosome decreased OS and increased antioxidant properties more than vitamin C. Significance Vitamin C niosome was more effective than vitamin C in treating As-induced toxicity in vitro.
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Affiliation(s)
- Akram Oftadeh Harsin
- Department of Pharmacology and Toxicology, Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Farzin Firozian
- Department of Pharmaceutics, Faculty of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Meysam Soleimani
- Departments of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fereshteh Mehri
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Corresponding Author: Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. Tel: +98-8138380267, Fax: +98-8138380131,
| | - Akram Ranjbar
- Department of Pharmacology and Toxicology, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Corresponding Author: Department of Pharmacology and Toxicology, School of Pharmacy, Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, P.O. Box: 6517838678, Hamadan, Iran.
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Camacho-Moll ME, Sampayo-Reyes A, Castorena-Torres F, Lozano-Garza G, Alarcón-Galván G, Hernández A, Marcos R, Alcocer-González JM, Tamez-Guerra R, Bermúdez de León M. Selenite Downregulates STAT3 Expression and Provokes Lymphocytosis in the Liver of Chronically Exposed Syrian Golden Hamsters. Molecules 2021; 26:molecules26185614. [PMID: 34577085 PMCID: PMC8465886 DOI: 10.3390/molecules26185614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/30/2021] [Accepted: 09/04/2021] [Indexed: 12/01/2022] Open
Abstract
Arsenic is considered a worldwide pollutant that can be present in drinking water. Arsenic exposure is associated with various diseases, including cancer. Antioxidants as selenite and α-tocopherol-succinate have been shown to modulate arsenic toxic effects. Since changes in STAT3 and PSMD10 gene expression have been associated with carcinogenesis, the aim of this study was to evaluate the effect of arsenic exposure and co-treatments with selenite or α-tocopherol-succinate on the expression of these genes, in the livers of chronically exposed Syrian golden hamsters. Animals were divided into six groups: (i) control, (ii) chronically treated with 100 ppm arsenic, (iii) treated with 6 ppm α-tocopherol-succinate (α-TOS), (iv) treated with 8.5 ppm selenite, (v) treated with arsenic + α-TOS, and (vi) treated with arsenic + selenite. Urine samples and livers were collected after 20 weeks of continuous exposure. The urine samples were analyzed for arsenic species by atomic absorption spectrophotometry, and real-time RT-qPCR analysis was performed for gene expression evaluation. A reduction in STAT3 expression was observed in the selenite-treated group. No differences in PSMD10 expression were found among groups. Histopathological analysis revealed hepatic lymphocytosis in selenite-treated animals. As a conclusion, long-term exposure to arsenic does not significantly alter the expression of STAT3 and PSMD10 oncogenes in the livers of hamsters; however, selenite down-regulates STAT3 expression and provokes lymphocytosis.
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Affiliation(s)
- María Elena Camacho-Moll
- Centro de Investigación Biomédica del Noreste, Departamento de Biología Molecular, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo León, Mexico; (M.E.C.-M.); (G.L.-G.)
- Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, San Pedro Garza García 66238, Nuevo León, Mexico;
| | - Adriana Sampayo-Reyes
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Nuevo León, Mexico; (A.S.-R.); (J.M.A.-G.); (R.T.-G.)
| | | | - Gerardo Lozano-Garza
- Centro de Investigación Biomédica del Noreste, Departamento de Biología Molecular, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo León, Mexico; (M.E.C.-M.); (G.L.-G.)
| | - Gabriela Alarcón-Galván
- Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, San Pedro Garza García 66238, Nuevo León, Mexico;
| | - Alba Hernández
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (A.H.); (R.M.)
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, 28029 Madrid, Spain
| | - Ricard Marcos
- Grup de Mutagènesi, Departament de Genètica i de Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; (A.H.); (R.M.)
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, 28029 Madrid, Spain
| | - Juan Manuel Alcocer-González
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Nuevo León, Mexico; (A.S.-R.); (J.M.A.-G.); (R.T.-G.)
| | - Reyes Tamez-Guerra
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66455, Nuevo León, Mexico; (A.S.-R.); (J.M.A.-G.); (R.T.-G.)
| | - Mario Bermúdez de León
- Centro de Investigación Biomédica del Noreste, Departamento de Biología Molecular, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo León, Mexico; (M.E.C.-M.); (G.L.-G.)
- Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, San Pedro Garza García 66238, Nuevo León, Mexico;
- Correspondence: ; Tel.: +52-81-8190-4035
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Hobbie K, Shao K, Henning C, Mendez W, Lee JS, Cote I, Druwe IL, Davis JA, Gift JS. Use of study-specific MOE-like estimates to prioritize health effects from chemical exposure for analysis in human health assessments. ENVIRONMENT INTERNATIONAL 2020; 144:105986. [PMID: 32871380 PMCID: PMC7572727 DOI: 10.1016/j.envint.2020.105986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
There are unique challenges in estimating dose-response with chemicals that are associated with multiple health outcomes and numerous studies. Some studies are more suitable than others for quantitative dose-response analyses. For such chemicals, an efficient method of screening studies and endpoints to identify suitable studies and potentially important health effects for dose-response modeling is valuable. Using inorganic arsenic as a test case, we developed a tiered approach that involves estimating study-specific margin of exposure (MOE)-like unitless ratios for two hypothetical scenarios. These study-specific unitless ratios are derived by dividing the exposure estimated to result in a 20% increase in relative risk over the background exposure (RRE20) by the background exposure, as estimated in two different ways. In our case study illustration, separate study-specific ratios are derived using estimates of United States population background exposure (RRB-US) and the mean study population reference group background exposure (RRB-SP). Systematic review methods were used to identify and evaluate epidemiologic studies, which were categorized based on study design (case-control, cohort, cross-sectional), various study quality criteria specific to dose-response analysis (number of dose groups, exposure ascertainment, exposure uncertainty), and availability of necessary dose-response data. Both case-control and cohort studies were included in the RRB analysis. The RRE20 estimates were derived by modeling effective counts of cases and controls estimated from study-reported adjusted odds ratios and relative risks. Using a broad (but not necessarily comprehensive) set of epidemiologic studies of multiple health outcomes selected for the purposes of illustrating the RRB approach, this test case analysis would suggest that diseases of the circulatory system, bladder cancer, and lung cancer may be arsenic health outcomes that warrant further analysis. This is suggested by the number of datasets from adequate dose-response studies demonstrating an effect with RRBs close to 1 (i.e., RRE20 values close to estimated background arsenic exposure levels).
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Affiliation(s)
- Kevin Hobbie
- ICF, 9300 Lee Highway, Fairfax, VA 22031-1207, USA
| | - Kan Shao
- Department of Environmental and Occupational Health, Indiana University, Bloomington, IN, USA
| | - Cara Henning
- ICF, 2635 Meridian Parkway Suite 200, Durham, NC 27713, USA
| | | | - Janice S Lee
- CPHEA, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Ila Cote
- CPHEA, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Ingrid L Druwe
- CPHEA, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - J Allen Davis
- CPHEA, U.S. Environmental Protection Agency, Cincinnati, OH, USA
| | - Jeffrey S Gift
- CPHEA, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA.
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Choi SW, Ho CK. Antioxidant properties of drugs used in Type 2 diabetes management: could they contribute to, confound or conceal effects of antioxidant therapy? Redox Rep 2018; 23:1-24. [PMID: 28514939 PMCID: PMC6748682 DOI: 10.1080/13510002.2017.1324381] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES This is a narrative review, investigating the antioxidant properties of drugs used in the management of diabetes, and discusses whether these antioxidant effects contribute to, confound, or conceal the effects of antioxidant therapy. METHODS A systematic search for articles reporting trials, or observational studies on the antioxidant effect of drugs used in the treatment of diabetes in humans or animals was performed using Web of Science, PubMed, and Ovid. Data were extracted, including data on a number of subjects, type of treatment (and duration) received, and primary and secondary outcomes. The primary outcomes were reporting on changes in biomarkers of antioxidants concentrations and secondary outcomes were reporting on changes in biomarkers of oxidative stress. RESULTS Diabetes Mellitus is a disease characterized by increased oxidative stress. It is often accompanied by a spectrum of other metabolic disturbances, including elevated plasma lipids, elevated uric acid, hypertension, endothelial dysfunction, and central obesity. This review shows evidence that some of the drugs in diabetes management have both in vivo and in vitro antioxidant properties through mechanisms such as scavenging free radicals and upregulating antioxidant gene expression. CONCLUSION Pharmaceutical agents used in the treatment of type 2 diabetes has been shown to exert an antioxidant effect..
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Affiliation(s)
- Siu Wai Choi
- Department of Anesthesiology, Queen Mary
Hospital, The University of Hong Kong, Pokfulam, Hong
Kong SAR
| | - Cyrus K. Ho
- Faculty of Veterinary and Agricultural
Sciences, The University of Melbourne, Melbourne,
Australia
- Faculty of Health and Social Sciences,
School of Nursing, The Hong Kong Polytechnic University,
Kowloon, Hong Kong SAR
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Tocopherol and selenite modulate the transplacental effects induced by sodium arsenite in hamsters. Reprod Toxicol 2017; 74:204-211. [DOI: 10.1016/j.reprotox.2017.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 09/22/2017] [Accepted: 10/17/2017] [Indexed: 11/20/2022]
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Kuo CC, Moon KA, Wang SL, Silbergeld E, Navas-Acien A. The Association of Arsenic Metabolism with Cancer, Cardiovascular Disease, and Diabetes: A Systematic Review of the Epidemiological Evidence. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:087001. [PMID: 28796632 PMCID: PMC5880251 DOI: 10.1289/ehp577] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 02/26/2017] [Accepted: 02/27/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND The available evidence on the role of arsenic metabolism in individual susceptibility to the development of cancer, cardiovascular disease, and diabetes has not been formally and comprehensively reviewed. OBJECTIVES Our goal was to systematically investigate the association of arsenic metabolism with cancer, cardiovascular disease, and diabetes-related outcomes in epidemiologic studies. As a secondary objective, we characterized the variation of arsenic metabolism in different populations worldwide. METHODS We searched Medline/PubMed and EMBASE from inception to January 2016 and applied predetermined exclusion criteria. Compositional data analysis was used to describe the distribution of arsenic metabolism biomarkers and evaluate the association between arsenic exposure and metabolism. RESULTS Twenty-eight studies met the inclusion criteria, 12 on cancer, nine on cardiovascular disease, and seven on diabetes-related outcomes. The median (interquartile range) for mean iAs%, MMA%, and DMA% was 11.2 (7.8-14.9)%, 13.0 (10.4-13.6)%, and 74.9 (69.8-80.0)%, respectively. Findings across studies suggested that higher arsenic exposure levels were associated with higher iAs% and lower DMA% and not associated with MMA%. For cancer, most studies found a pattern of higher MMA% and lower DMA% associated with higher risk of all-site, urothelial, lung, and skin cancers. For cardiovascular disease, higher MMA% was generally associated with higher risk of carotid atherosclerosis and clinical cardiovascular disease but not with hypertension. For diabetes-related outcomes, the pattern of lower MMA% and higher DMA% was associated with higher risk of metabolic syndrome and diabetes. CONCLUSIONS Population level of iAs% and DMA%, but not MMA%, were associated with arsenic exposure levels. Overall, study findings suggest that higher MMA% was associated with an increased risk of cancer and cardiovascular disease, while lower MMA% was associated with an increased risk of diabetes and metabolic syndrome. Additional population-based studies and experimental studies are needed to further evaluate and understand the role of arsenic exposure in arsenic metabolism and the role of arsenic metabolism in disease development. https://doi.org/10.1289/EHP577.
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Affiliation(s)
- Chin-Chi Kuo
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions , Baltimore, Maryland, USA
- Kidney Institute and Big Data Center, China Medical University Hospital and College of Medicine, China Medical University , Taichung, Taiwan
| | - Katherine A Moon
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions , Baltimore, Maryland, USA
| | - Shu-Li Wang
- National Institute of Environmental Health Sciences, National Health Research Institutes , Miaoli, Taiwan
| | - Ellen Silbergeld
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
| | - Ana Navas-Acien
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health , Baltimore, Maryland, USA
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions , Baltimore, Maryland, USA
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health , New York, New York, USA
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Mendez WM, Eftim S, Cohen J, Warren I, Cowden J, Lee JS, Sams R. Relationships between arsenic concentrations in drinking water and lung and bladder cancer incidence in U.S. counties. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2017; 27:235-243. [PMID: 27901016 DOI: 10.1038/jes.2016.58] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 08/10/2016] [Indexed: 05/04/2023]
Abstract
Increased risks of lung and bladder cancer have been observed in populations exposed to high levels of inorganic arsenic. However, studies at lower exposures (i.e., less than 100 μg/l in water) have shown inconsistent results. We therefore conducted an ecological analysis of the association between historical drinking water arsenic concentrations and lung and bladder cancer incidence in U.S. counties. We used drinking water arsenic concentrations measured by the U.S. Geological Survey and state agencies in the 1980s and 1990s as proxies for historical exposures in counties where public groundwater systems and private wells are important sources of drinking water. Relationships between arsenic levels and cancer incidence in 2006-2010 were explored by Poisson regression analyses, adjusted for groundwater dependence and important demographic covariates. The median and 95th percentile county mean arsenic concentrations were 1.5 and 15.4 μg/l, respectively. Water arsenic concentrations were significant and positively associated with female and male bladder cancer, and with female lung cancer. Our findings support an association between low water arsenic concentrations and lung and bladder cancer incidence in the United States. However, the limitations of the ecological study design suggest caution in interpreting these results.
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Affiliation(s)
| | | | | | | | - John Cowden
- National Center for Computational Toxicology, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Janice S Lee
- National Center for Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Reeder Sams
- National Center for Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
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Yu H, Liu S, Li M, Wu B. Influence of diet, vitamin, tea, trace elements and exogenous antioxidants on arsenic metabolism and toxicity. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2016; 38:339-351. [PMID: 26169729 DOI: 10.1007/s10653-015-9742-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 07/02/2015] [Indexed: 06/04/2023]
Abstract
Health risk of arsenic (As) has received increasing attention. Acute and chronic exposure to As could cause several detrimental effects on human health. As toxicity is closely related to its bioaccessibility and metabolism. In real environment, many factors, such as diet and nutrition, can influence As bioaccessibility, metabolism and toxicity. This paper mainly reviews the influences of diets and elements on As bioaccessibility, metabolism and toxicity and their underlying mechanisms to provide suggestions for future investigations. Vitamins, jaggery, fruit, tea, glutathione, N-acetylcysteine and zinc could reduce the As-induced toxicity by increasing antioxidative enzymes to antagonize oxidative stress caused by As and/or increasing As methylation. However, bean and betel nut could increase risk of skin lesions caused by As. Interestingly, high-fat diet, selenium and iron have incompatible effects on As bioaccessibility, metabolism and toxicity in different experimental conditions. Based on current literatures, the As methylation and As-induced oxidative damage might be two main ways that the diets and elements influence As toxicity. Combined application of in vitro human cell lines and gastrointestinal models might be useful tools to simultaneously characterize the changes in As bioaccessibility and toxicity in the future research.
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Affiliation(s)
- Haiyan Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Su Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Mei Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Bing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, People's Republic of China.
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Argos M, Rahman M, Parvez F, Dignam J, Islam T, Quasem I, K Hore S, T Haider A, Hossain Z, I Patwary T, Rakibuz-Zaman M, Sarwar G, La Porte P, Harjes J, Anton K, Kibriya MG, Jasmine F, Khan R, Kamal M, Shea CR, Yunus M, Baron JA, Ahsan H. Baseline comorbidities in a skin cancer prevention trial in Bangladesh. Eur J Clin Invest 2013; 43:579-88. [PMID: 23590571 PMCID: PMC3953314 DOI: 10.1111/eci.12085] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 03/09/2013] [Indexed: 01/02/2023]
Abstract
BACKGROUND Epidemiologic research suggests that increased cancer risk due to chronic arsenic exposure persists for several decades even after the exposure has terminated. Observational studies suggest that antioxidants exert a protective effect on arsenical skin lesions and cancers among those chronically exposed to arsenic through drinking water. This study reports on the design, methods and baseline analyses from the Bangladesh Vitamin E and Selenium Trial (BEST), a population-based chemoprevention study conducted among adults in Bangladesh with visible arsenic toxicity. MATERIALS AND METHODS Bangladesh Vitamin E and Selenium Trial is a 2 × 2 full factorial, double-blind, randomized controlled trial of 7000 adults having manifest arsenical skin lesions evaluating the efficacy of 6-year supplementation with alpha-tocopherol (100 mg daily) and L-selenomethionine (200 μg daily) for the prevention of nonmelanoma skin cancer. RESULTS In cross-sectional analyses, we observed significant associations of skin lesion severity with male gender (female prevalence odds ratio (POR) = 0.87; 95% CI = 0.79-0.96), older age (aged 36-45 years, POR = 1.27; 95% CI = 1.13-1.42; aged 46-55 years, POR = 1.44; 95% CI = 1.27-1.64 and aged 56-65 years, POR = 1.50; 95% CI = 1.26-1.78 compared with aged 25-35 years), hypertension (POR = 1.29; 95% CI = 1.08-1.55), diabetes (POR = 2.13; 95% CI = 1.32-3.46), asthma (POR = 1.55; 95% CI = 1.03-2.32) and peptic ulcer disease (POR = 1.20; 95% CI = 1.07-1.35). CONCLUSIONS We report novel associations between arsenical skin lesions with several common chronic diseases. With the rapidly increasing burden of preventable cancers in developing countries, efficient and feasible chemoprevention study designs and approaches, such as employed in BEST, may prove both timely and potentially beneficial in conceiving cancer chemoprevention trials in Bangladesh and beyond.
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Affiliation(s)
- Maria Argos
- Department of Health Studies, The University of Chicago, Chicago, IL 60637, USA
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Jones JM. Recent Research on Folate Intake, Rice Products, Fiber Intake, and Enzyme Degradation of Gluten. CEREAL FOOD WORLD 2012. [DOI: 10.1094/cfw-57-5-0235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- J. M. Jones
- St. Catherine University, St. Paul, MN, U.S.A
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Arsenic modulates heme oxygenase-1, interleukin-6, and vascular endothelial growth factor expression in endothelial cells: roles of ROS, NF-κB, and MAPK pathways. Arch Toxicol 2012; 86:879-96. [DOI: 10.1007/s00204-012-0845-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 03/14/2012] [Indexed: 12/19/2022]
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Banerjee M, Bhattacharjee P, Giri AK. Arsenic-induced Cancers: A Review with Special Reference to Gene, Environment and Their Interaction. Genes Environ 2011. [DOI: 10.3123/jemsge.33.128] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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