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De Pretis F, Zhou Y, Xun P, Shao K. Benchmark dose modeling for epidemiological dose-response assessment using prospective cohort studies. Risk Anal 2024; 44:743-756. [PMID: 37496455 PMCID: PMC10817999 DOI: 10.1111/risa.14196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 07/05/2023] [Accepted: 07/12/2023] [Indexed: 07/28/2023]
Abstract
Benchmark dose (BMD) methodology has been employed as a default dose-response modeling approach to determine the toxicity value of chemicals to support regulatory chemical risk assessment. Especially, a relatively standardized BMD analysis framework has been established for modeling toxicological data regarding the formats of input data, dose-response models, definitions of benchmark response, and model uncertainty consideration. However, the BMD approach has not been well developed for epidemiological data mainly because of the diverse designs of epidemiological studies and various formats of data reported in the literature. Although most of the epidemiological BMD analyses were developed to solve a particular question, the methods proposed in two recent studies are able to handle cohort and case-control studies using summary data with consideration of adjustments for confounders. Therefore, the purpose of the present study is to investigate and compare the "effective count"-based BMD modeling approach and adjusted relative risk (RR)-based BMD analysis approach to identify an appropriate BMD modeling framework that can be generalized for analyzing published data of prospective cohort studies for BMD analysis. The two methods were applied to the same set of studies that investigated the association between bladder and lung cancer and inorganic arsenic exposure for BMD estimation. The results suggest that estimated BMDs and BMDLs are relatively consistent; however, with the consideration of established common practice in BMD analysis, modeling adjusted RR values as continuous data for BMD estimation is a more generalizable approach harmonized with the BMD approach using toxicological data.
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Affiliation(s)
- Francesco De Pretis
- Department of Environmental and Occupational Health, School of Public Health, Indiana University Bloomington, Bloomington, IN 47405, USA
- Department of Communication and Economics, University of Modena and Reggio Emilia, Reggio Emilia, RE 42124, Italy
| | - Yun Zhou
- Department of Environmental and Occupational Health, School of Public Health, Indiana University Bloomington, Bloomington, IN 47405, USA
| | - Pengcheng Xun
- Department of Global Value Access and Outcomes, Atara Biotherapeutics Inc., Thousand Oaks, CA 91320, USA
| | - Kan Shao
- Department of Environmental and Occupational Health, School of Public Health, Indiana University Bloomington, Bloomington, IN 47405, USA
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2
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Rosendo GBO, Ferreira RLU, Aquino SLS, Barbosa F, Pedrosa LFC. Glycemic Changes Related to Arsenic Exposure: An Overview of Animal and Human Studies. Nutrients 2024; 16:665. [PMID: 38474793 DOI: 10.3390/nu16050665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/18/2023] [Accepted: 10/26/2023] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Arsenic (As) is a risk factor associated with glycemic alterations. However, the mechanisms of action and metabolic aspects associated with changes in glycemic profiles have not yet been completely elucidated. Therefore, in this review, we aimed to investigate the metabolic aspects of As and its mechanism of action associated with glycemic changes. METHODS We searched the PubMed (MEDLINE) and Google Scholar databases for relevant articles published in English. A combination of free text and medical subject heading keywords and search terms was used to construct search equations. The search yielded 466 articles; however, only 50 were included in the review. RESULTS We observed that the relationship between As exposure and glycemic alterations in humans may be associated with sex, smoking status, body mass index, age, occupation, and genetic factors. The main mechanisms of action associated with changes induced by exposure to As in the glycemic profile identified in animals are increased oxidative stress, reduced expression of glucose transporter type 4, induction of inflammatory factor expression and dysfunction of pancreatic β cells. CONCLUSIONS Therefore, As exposure may be associated with glycemic alterations according to inter-individual differences.
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Affiliation(s)
| | | | - Séphora Louyse Silva Aquino
- Postgraduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Fernando Barbosa
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil
| | - Lucia Fatima Campos Pedrosa
- Postgraduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Department of Nutrition, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil
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3
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Davydiuk T, Tao J, Lu X, Le XC. Effects of Dietary Intake of Arsenosugars and Other Organic Arsenic Species on Studies of Arsenic Methylation Efficiency in Humans. Environ Health (Wash) 2023; 1:236-248. [PMID: 37881591 PMCID: PMC10594586 DOI: 10.1021/envhealth.3c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 10/27/2023]
Abstract
Extensive research has used dimethylarsinic acid (DMA) in urine as a marker of arsenic methylation. The premise is that humans methylate inorganic arsenicals to monomethylarsonic acid (MMA) and DMA and excrete these arsenic species into the urine. However, DMA in urine not only comes from the methylation of inorganic arsenic but also could be a result of metabolism of other arsenic species, such as arsenosugars and arsenolipids. Most environmental health and epidemiological studies of arsenic methylation might have overlooked confounding factors that contribute to DMA in urine. Here we critically evaluate reported studies that used methylation indexes, concentration ratios of methylated arsenicals, or the percentage of DMA in urine as markers of arsenic methylation efficiency. Dietary intake of arsenosugars potentially confounds the calculation and interpretation of the arsenic methylation efficiencies. Many studies have not considered incidental dietary intake of arsenosugars, arsenolipids, and other organic arsenic species. Future studies should consider the dietary intake of diverse arsenic species and their potential effect on the urinary concentrations of DMA.
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Affiliation(s)
- Tetiana Davydiuk
- Department
of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Jeffrey Tao
- Division
of Analytical and Environmental Toxicology, Department of Laboratory
Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G3
| | - Xiufen Lu
- Division
of Analytical and Environmental Toxicology, Department of Laboratory
Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G3
| | - X. Chris Le
- Department
of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
- Division
of Analytical and Environmental Toxicology, Department of Laboratory
Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G3
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Yang Y, Chi L, Liu CW, Hsiao YC, Lu K. Chronic Arsenic Exposure Perturbs Gut Microbiota and Bile Acid Homeostasis in Mice. Chem Res Toxicol 2023; 36:1037-1043. [PMID: 37295807 PMCID: PMC10773974 DOI: 10.1021/acs.chemrestox.2c00410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Arsenic exposure can perturb gut microbiota and their metabolic functions. We exposed C57BL/6 mice to 1 ppm arsenic in drinking water and investigated whether arsenic exposure affects the homeostasis of bile acids, a group of key microbiome-regulated signaling molecules of microbiome-host interactions. We found that arsenic exposure differentially changed major unconjugated primary bile acids and consistently decreased secondary bile acids in the serum and liver. The relative abundance of Bacteroidetes and Firmicutes was associated with the bile acid level in serum. This study demonstrates that arsenic-induced gut microbiota dysbiosis may play a role in arsenic-perturbed bile acid homeostasis.
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Affiliation(s)
- Yifei Yang
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Liang Chi
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Chih-wei Liu
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Yun-Chung Hsiao
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC 27599, United States
| | - Kun Lu
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, NC 27599, United States
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Huang X, Xiao Y, Jing D, Huang Y, Yang S, Huang Z, Yang G, Duan Y, He M, Su J, Chen M, Chen X, Shen M. Arsenic exposure and pruritus: Evidence from observational, interventional, and mendelian randomization studies. Allergy 2023; 78:1585-1594. [PMID: 37129453 DOI: 10.1111/all.15758] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/13/2023] [Accepted: 03/31/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Pruritus is identified as an adverse drug reaction to arsenic trioxide, but the association of arsenic exposure with pruritus has not been investigated. METHODS A cross-sectional study was conducted in Shimen, China. A Mendelian randomization analysis was conducted to confirm the causal relationship between genetically predicted percentages of monomethylated arsenic (MMA%) and dimethylated arsenic (DMA%) in urine with chronic pruritus in UK Biobank. A case-control study was then conducted to determine the biomarker for pruritus. Arsenite-treated mice were used to confirm the biomarker, and von Frey test was used to induce scratching bouts. Last, a randomized, double-blind, placebo-controlled trial was conducted to test the efficacy of naloxone in arsenic-exposed patients with pruritus in Shimen. RESULTS Hair arsenic (μg/g) showed a dose-response relationship with the intensity of itch in 1079 participants, with odds ratios (OR) of 1.11 for moderate-to-severe itch (p = 0.012). The Mendelian randomization analysis confirmed the causal relationship, with ORs of 1.043 for MMA% (p = 0.029) and 0.904 for DMA% (p = 0.077) above versus under median. Serum β-endorphin was identified as a significant biomarker for the intensity of itch (p < 0.001). Consistently, treatment with arsenite upregulated the level of β-endorphin (p = 0.002) and induced scratching bouts (p < 0.001) in mice. The randomized controlled trial in 126 participants showed that treatment with sublingual naloxone significantly relieved the intensity of itch in arsenic-exposed participants in 2 weeks (β = -0.98, p = 0.04). CONCLUSION Arsenic exposure is associated with pruritus, and β-endorphin serves as a biomarker of pruritus. Naloxone relieves pruritus in patients with arseniasis.
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Affiliation(s)
- Xiaoyan Huang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
| | - Yi Xiao
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
- Furong Laboratory, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, Hunan, China
| | - Danrong Jing
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
| | - Yuzhou Huang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Songchun Yang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
| | - Zhijun Huang
- Furong Laboratory, Changsha, Hunan, China
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guoping Yang
- Furong Laboratory, Changsha, Hunan, China
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanying Duan
- Department of Environmental and Occupational Health, Xiangya School of Public Health, Central South University, Changsha, Hunan, China
| | - Meian He
- Department of Environmental and Occupational Health, Tongji School of Public Health, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
- Furong Laboratory, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, Hunan, China
| | - Mingliang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
- Furong Laboratory, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, Hunan, China
| | - Minxue Shen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, Hunan, China
- Hunan Engineering Research Center of Skin Health and Disease, Changsha, Hunan, China
- Furong Laboratory, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, Hunan, China
- Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, Hunan, China
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Butler EE, Karagas MR, Demidenko E, Bellinger DC, Korrick SA. In utero arsenic exposure and early childhood motor development in the New Hampshire Birth Cohort Study. Front Epidemiol 2023; 3:1139337. [PMID: 38455900 PMCID: PMC10910989 DOI: 10.3389/fepid.2023.1139337] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/21/2023] [Indexed: 03/09/2024]
Abstract
Introduction High-level prenatal and childhood arsenic (As) exposure characteristic of several regions in Asia (e.g., Bangladesh), may impact motor function. However, the relationship between lower-level arsenic exposure (characteristic of other regions) and motor development is largely unstudied, despite the potential for deficient motor skills in childhood to have adverse long-term consequences. Thus, we sought to investigate the association between prenatal As exposure and motor function among 395 children in the New Hampshire Birth Cohort Study, a rural cohort from northern New England. Methods Prenatal exposure was estimated by measuring maternal urine speciated As at 24-28 weeks of gestation using high-performance liquid chromatography (HPLC) inductively coupled plasma mass spectrometry (ICP-MS) and summing inorganic As, monomethylarsonic acid, and dimethylarsinic acid to obtain total urinary As (tAs). Motor function was assessed with the Bruininks-Oseretsky Test of Motor Proficiency, 2nd Edition (BOT-2) at a mean (SD) age of 5.5 (0.4) years. Results Children who completed this exam were largely reported as white race (97%), born to married mothers (86%) with a college degree or higher (67%). The median (IQR) gestational urine tAs concentration was 4.0 (5.0) µg/L. Mean (SD) BOT-2 scores were 48.6 (8.4) for overall motor proficiency and 48.2 (9.6) for fine manual control [standard score = 50 (10)], and were 16.3 (5.1) for fine motor integration and 12.5 (4.1) for fine motor precision [standard score = 15 (5)]. We found evidence of a non-linear dose response relationship and used a change-point model to assess the association of tAs with overall motor proficiency and indices of fine motor integration, fine motor precision, and their composite, fine manual control, adjusted for age and sex. In models adjusted for potential confounders, each doubling of urine tAs decreased overall motor proficiency by -3.3 points (95% CI: -6.1, -0.4) for tAs concentrations greater than the change point of 9.5 µg/L and decreased fine motor integration by -4.3 points (95% CI: -8.0, -0.6) for tAs concentrations greater than the change point of 17.0 µg/L. Discussion In summary, we found that levels of prenatal As exposure above an empirically-derived threshold (i.e., the change point) were associated with decrements in childhood motor development in a US population.
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Affiliation(s)
- Erin E. Butler
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
- Children’s Environmental Health and Disease Prevention Research Center, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Eugene Demidenko
- Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - David C. Bellinger
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Susan A. Korrick
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, United States
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
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Shakya A, Dodson M, Artiola JF, Ramirez-Andreotta M, Root RA, Ding X, Chorover J, Maier RM. Arsenic in Drinking Water and Diabetes. Water (Basel) 2023; 15:1751. [PMID: 37886432 PMCID: PMC10601382 DOI: 10.3390/w15091751] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Arsenic is ubiquitous in soil and water environments and is consistently at the top of the Agency for Toxic Substances Disease Registry (ATSDR) substance priority list. It has been shown to induce toxicity even at low levels of exposure. One of the major routes of exposure to arsenic is through drinking water. This review presents current information related to the distribution of arsenic in the environment, the resultant impacts on human health, especially related to diabetes, which is one of the most prevalent chronic diseases, regulation of arsenic in drinking water, and approaches for treatment of arsenic in drinking water for both public utilities and private wells. Taken together, this information points out the existing challenges to understanding both the complex health impacts of arsenic and to implementing the treatment strategies needed to effectively reduce arsenic exposure at different scales.
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Affiliation(s)
- Aryatara Shakya
- Department Pharmacology & Toxicology, University of Arizona, Tucson, AZ 85721, USA
| | - Matthew Dodson
- Department Pharmacology & Toxicology, University of Arizona, Tucson, AZ 85721, USA
| | - Janick F. Artiola
- Department Environmental Science, University of Arizona, Tucson, AZ 85721, USA
| | | | - Robert A. Root
- Department Environmental Science, University of Arizona, Tucson, AZ 85721, USA
| | - Xinxin Ding
- Department Pharmacology & Toxicology, University of Arizona, Tucson, AZ 85721, USA
| | - Jon Chorover
- Department Environmental Science, University of Arizona, Tucson, AZ 85721, USA
| | - Raina M. Maier
- Department Environmental Science, University of Arizona, Tucson, AZ 85721, USA
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Folesani G, Galetti M, Petronini PG, Mozzoni P, La Monica S, Cavallo D, Corradi M. Interaction between Occupational and Non-Occupational Arsenic Exposure and Tobacco Smoke on Lung Cancerogenesis: A Systematic Review. Int J Environ Res Public Health 2023; 20:4167. [PMID: 36901176 PMCID: PMC10001869 DOI: 10.3390/ijerph20054167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Although a higher lung cancer risk has been already associated with arsenic exposure, the contribution of arsenic and its compounds to the carcinogenic effects of other agents, such as tobacco smoke, is not well characterized. This systematic review examined the relationship between occupational and non-occupational arsenic exposure and tobacco smoking on lung cancer risk using papers published from 2010 to 2022. Two databases, PUBMED and Scifinder, were used for the searches. Among the sixteen human studies included, four were about occupational exposure, and the others were about arsenic in drinking water. Furthermore, only three case-control studies and two cohort studies evaluated an additive or multiplicative interaction. The interaction between arsenic exposure and tobacco smoke seems to be negligible at low arsenic concentrations (<100 μg/L), while there is a synergistic effect at higher concentrations. Finally, it is not yet possible to assess whether a linear no-threshold (LNT) model for lung cancer risk can be applied to the co-exposure to arsenic and tobacco smoke. Although the methodological quality of the included studies is good, these findings suggest that rigorous and accurate prospective studies on this topic are highly needed.
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Affiliation(s)
- Giuseppina Folesani
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL-Italian Workers’ Compensation Authority, Via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Maricla Galetti
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL-Italian Workers’ Compensation Authority, Via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Pier Giorgio Petronini
- Department of Medicine and Surgery, University of Parma, Viale Gramsci 14, 43126 Parma, Italy
| | - Paola Mozzoni
- Department of Medicine and Surgery, University of Parma, Viale Gramsci 14, 43126 Parma, Italy
- Center of Excellence for Toxicological Research (CERT), University of Parma, Viale Gramsci 14, 43126 Parma, Italy
| | - Silvia La Monica
- Department of Medicine and Surgery, University of Parma, Viale Gramsci 14, 43126 Parma, Italy
| | - Delia Cavallo
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL-Italian Workers’ Compensation Authority, Via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Massimo Corradi
- Department of Medicine and Surgery, University of Parma, Viale Gramsci 14, 43126 Parma, Italy
- Center of Excellence for Toxicological Research (CERT), University of Parma, Viale Gramsci 14, 43126 Parma, Italy
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9
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Karachaliou C, Sgourou A, Kakkos S, Kalavrouziotis I. Arsenic exposure promotes the emergence of cardiovascular diseases. Rev Environ Health 2022; 37:467-486. [PMID: 34253004 DOI: 10.1515/reveh-2021-0004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
A large number of studies conducted in the past decade 2010-2020 refer to the impact of arsenic (As) exposure on cardiovascular risk factors. The arsenic effect on humans is complex and mainly depends on the varying individual susceptibilities, its numerous toxic expressions and the variation in arsenic metabolism between individuals. In this review we present relevant data from studies which document the association of arsenic exposure with various biomarkers, the effect of several genome polymorphisms on arsenic methylation and the underling molecular mechanisms influencing the cardiovascular pathology. The corresponding results provide strong evidence that high and moderate-high As intake induce oxidative stress, inflammation and vessel endothelial dysfunction that are associated with increased risk for cardiovascular diseases (CVDs) and in particular hypertension, myocardial infarction, carotid intima-media thickness and stroke, ventricular arrhythmias and peripheral arterial disease. In addition, As exposure during pregnancy implies risks for blood pressure abnormalities among infants and increased mortality rates from acute myocardial infarction during early adulthood. Low water As concentrations are associated with increased systolic, diastolic and pulse pressure, coronary heart disease and incident stroke. For very low As concentrations the relevant studies are few. They predict a risk for myocardial infarction, stroke and ischemic stroke and incident CVD, but they are not in agreement regarding the risk magnitude.
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Affiliation(s)
- Christiana Karachaliou
- School of Science and Technology, Lab. of Sustainable Waste Technology Management, Hellenic Open University, Patras, Greece
| | - Argyro Sgourou
- School of Science and Technology, Biology Lab, Hellenic Open University, Patras, Greece
| | - Stavros Kakkos
- Department of Vascular Surgery, Medical School of Patras, University of Patras, Patras, Greece
| | - Ioannis Kalavrouziotis
- School of Science and Technology, Lab. of Sustainable Waste Technology Management, Hellenic Open University, Patras, Greece
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Li X, Chen S, Wang X, Zhang R, Yang J, Xu H, He W, Lai M, Wu S, Nan A. The pivotal regulatory factor circBRWD1 inhibits arsenic exposure-induced lung cancer occurrence by binding mRNA and regulating its stability. Mol Ther Oncolytics 2022; 26:399-412. [PMID: 36159776 PMCID: PMC9463561 DOI: 10.1016/j.omto.2022.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 08/18/2022] [Indexed: 11/28/2022] Open
Abstract
Multiple studies have indicated that circular RNAs (circRNAs) play a regulatory role in different stages of tumors by interacting with various molecules. With continuous in-depth research on the biological functions of circRNAs, increasing evidence has shown that circRNAs play important roles in carcinogenesis caused by environmental pollutants. However, the function and mechanism of circRNAs in arsenic exposure-induced lung cancer occurrence have not been reported. In this study, RNA sequencing and qPCR assays revealed that the expression of circBRWD1 was decreased in BEAS-2B-As cells and multiple lung cancer cell lines. Silencing circBRWD1 promoted cell viability and proliferation, inhibited cell apoptosis, and accelerated the G0/G1 phase transition in BEAS-2B-As cells; however, these functions were abrogated by circBRWD1 overexpression. Mechanistically, under arsenic exposure, expression of decreased circBRWD1 led to enhanced stability of the mRNA to which it directly binds (c-JUN, c-MYC, and CDK6 mRNA), increasing its expression. This mechanism promotes the malignant transformation of lung cells and ultimately leads to lung cancer. Our findings thus reveal the molecular mechanism of arsenic carcinogenesis.
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Affiliation(s)
- Xiaofei Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Nanning 530021, China.,Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China.,Guangxi Key Laboratory of Environment and Health Research, Guangxi Medical University, Nanning 530021, China
| | - Sixian Chen
- Department of Toxicology, School of Public Health, Guangxi Medical University, Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Nanning 530021, China.,Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China.,Guangxi Key Laboratory of Environment and Health Research, Guangxi Medical University, Nanning 530021, China
| | - Xin Wang
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Ruirui Zhang
- Department of Toxicology, School of Public Health, Guangxi Medical University, Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Nanning 530021, China.,Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China.,Guangxi Key Laboratory of Environment and Health Research, Guangxi Medical University, Nanning 530021, China
| | - Jialei Yang
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China
| | - Haotian Xu
- Department of Toxicology, School of Public Health, Guangxi Medical University, Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Nanning 530021, China.,Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China.,Guangxi Key Laboratory of Environment and Health Research, Guangxi Medical University, Nanning 530021, China
| | - Wanting He
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China
| | - Mingshuang Lai
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China
| | - Shuilian Wu
- Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Aruo Nan
- Department of Toxicology, School of Public Health, Guangxi Medical University, Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Nanning 530021, China.,Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China.,Guangxi Key Laboratory of Environment and Health Research, Guangxi Medical University, Nanning 530021, China.,Zhejiang Provincial Key Laboratory for Technology and Application of Model Organisms, Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
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11
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Islam Z, Islam J, Tony SR, Anjum A, Ferdous R, Roy AK, Hossain S, Salam KA, Nikkon F, Hossain K, Saud ZA. Mulberry leaves juice attenuates arsenic-induced neurobehavioral and hepatic disorders in mice. Food Sci Nutr 2022; 10:4360-4370. [PMID: 36514774 PMCID: PMC9731539 DOI: 10.1002/fsn3.3028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/15/2022] [Accepted: 07/27/2022] [Indexed: 12/16/2022] Open
Abstract
Arsenic (As) poisoning has caused an environmental catastrophe in Bangladesh as millions of people are exposed to As-contaminated drinking water. Chronic As-exposure causes depression, memory impairment, and liver injury in experimental animals. This study was carried out to assess the protective effect of mulberry leaves juice (Mul) against As-induced neurobehavioral and hepatic dysfunctions in Swiss albino mice. As-exposed mice spent significantly reduced time in open arms and increased time spent in closed arms in the elevated plus maze (EPM) test, whereas they took significantly longer time to find the hidden platform in the Morris water maze (MWM) test and spent significantly less time in the desired quadrant when compared to the control mice. A significant reduction in serum BChE activity, an indicator of As-induced neurotoxicity-associated behavioral changes, was noted in As-exposed mice compared to control mice. Supplementation of Mul to As-exposed mice significantly increased serum BChE activity, increased the time spent in open arms and reduced time latency to find the hidden platform, and stayed more time in the target quadrant in EPM and MWM tests, respectively, compared to As-exposed-only mice. Also, a significantly reduced activity of BChE, AChE, SOD, and GSH in brain, and elevated ALP, AST, and ALT activities in serum were noted in As-exposed mice when compared to control mice. Mul supplementation significantly restored the activity of these enzymes and also recovered As-induced alterations in hepatic tissue in As-exposed mice. In conclusion, this study suggested that mulberry leaves juice attenuates As-induced neurobehavioral and hepatic dysfunction in mice.
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Affiliation(s)
- Zohurul Islam
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Jahidul Islam
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Selim Reza Tony
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Adiba Anjum
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh,Department of Biochemistry and Molecular BiologyMawlana Bhashani Science and Technology UniversityTangailBangladesh
| | - Rafia Ferdous
- Department of PharmacyUniversity of RajshahiRajshahiBangladesh
| | - Apurba Kumar Roy
- Department of Genetic Engineering & BiotechnologyUniversity of RajshahiRajshahiBangladesh
| | - Shakhawoat Hossain
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Kazi Abdus Salam
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Farjana Nikkon
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Khaled Hossain
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
| | - Zahangir Alam Saud
- Department of Biochemistry and Molecular BiologyUniversity of RajshahiRajshahiBangladesh
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12
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Keltie E, Hood KM, Cui Y, Sweeney E, Ilie G, Adisesh A, Dummer T, Bharti V, Kim JS. Arsenic Speciation and Metallomics Profiling of Human Toenails as a Biomarker to Assess Prostate Cancer Cases: Atlantic PATH Cohort Study. Front Public Health 2022; 10:818069. [PMID: 35875010 PMCID: PMC9301242 DOI: 10.3389/fpubh.2022.818069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic exposure to inorganic arsenic and trace metals has been linked to prostate cancer, and altered arsenic methylation capacity may have an important role in arsenic carcinogenesis. Biomarkers may be able to elucidate this role. Our objectives were to characterize profiles of arsenic species and metallome in toenails and urine samples, compare profiles between prostate cancer cases and controls, and determine the discriminant ability of toenail and urine biomarkers. Toenail samples (n = 576), urine samples (n = 152), and questionnaire data were sourced from the Atlantic Partnership for Tomorrow's Health (PATH) cohort study. Healthy controls were matched to prostate cancer cases (3:1 ratio) on sex, age, smoking status, and the province of residence. Metallome profiles and proportions of arsenic species were measured in toenail and urine samples. Analysis of covariance (ANCOVA) was used to compare the mean percent monomethylarsonic acid (%MMA), dimethylarsonic acid (%DMA), inorganic arsenic (%iAs), primary methylation index (PMI, MMA/iAs), and secondary methylation index (SMI, DMA/MMA). Multivariate analysis of covariance (MANCOVA) was used to compare selected metal concentrations. Mean %MMA was significantly lower and SMI was significantly higher in toenails from prostate cancer cases compared to controls in unadjusted and adjusted models. Proportions of arsenic species were correlated with total arsenic in toenails. Arsenic speciation in urine was not different between cases and controls, nor were metallome profiles in toenails and urine. Our results indicate that toenails are a viable biomarker for altered arsenic speciation in prostate cancer cases and may have greater utility than urine in this context.
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Affiliation(s)
- Erin Keltie
- Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada,Health and Environments Research Centre (HERC) Laboratory, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Kalli M. Hood
- Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada,Health and Environments Research Centre (HERC) Laboratory, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Yunsong Cui
- Atlantic Partnership for Tomorrow's Health (PATH), Dalhousie University, Halifax, NS, Canada
| | - Ellen Sweeney
- Atlantic Partnership for Tomorrow's Health (PATH), Dalhousie University, Halifax, NS, Canada
| | - Gabriela Ilie
- Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Anil Adisesh
- Division of Occupational Medicine, Department of Medicine, University of Toronto, Toronto, ON, Canada,Department of Medicine, Dalhousie Medicine New Brunswick, Saint John, NB, Canada
| | - Trevor Dummer
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
| | - Veni Bharti
- Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada,Health and Environments Research Centre (HERC) Laboratory, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Jong Sung Kim
- Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada,Health and Environments Research Centre (HERC) Laboratory, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada,*Correspondence: Jong Sung Kim
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13
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Taylor VF, Karagas MR. Exposure to arsenolipids and inorganic arsenic from marine-sourced dietary supplements. Chemosphere 2022; 296:133930. [PMID: 35182530 PMCID: PMC9007862 DOI: 10.1016/j.chemosphere.2022.133930] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 05/05/2023]
Abstract
Dietary supplements sourced from marine environments, such as fish oils and seaweed-based supplements, are widely consumed to boost nutrient intakes, including by vulnerable populations such as pregnant women. Like other marine foods, these supplements are also a potential source of exposure to arsenic, including the known toxic species, inorganic arsenic, and the cytotoxic, lipid-soluble arsenic compounds, arsenic hydrocarbons. A study of 32 marine-sourced supplements found higher total arsenic concentrations (>1000 ng g-1) in supplements made from seaweed, krill and calanus oil, and in fish and fish liver products marketed as "unprocessed". Inorganic arsenic was only detectable in the seaweed samples, and was elevated (8900 ng g-1) in one product. Arsenic hydrocarbons were not detected in krill oil samples but were present at concentrations from 169 to 2048 ng g-1 in "unprocessed" fish and fish liver oil, and calanus oil. Survey data from the New Hampshire Birth Cohort Study (NHBCS) found 13.5% of pregnant women (n = 1997) reported taking fish oil supplements; and of those, most did so daily (75.6%, 6 or more times per week). Only a small percentage (9%) of those who reported consuming fish oil used products associated with higher arsenic levels. Higher urinary arsenic concentrations were found among women who consumed fish oil compared with those who did not, and specifically higher arsenobetaine and dimethyl arsenic concentrations. Dietary supplements are becoming common components of modern diets, and some marine-sourced dietary supplements are a source of inorganic arsenic and arsenic hydrocarbons.
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Affiliation(s)
- Vivien F Taylor
- Department of Earth Science, Dartmouth College, Hanover, NH, USA.
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
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14
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El-Ghiaty MA, El-Kadi AO. Arsenic: Various species with different effects on cytochrome P450 regulation in humans. EXCLI J 2021; 20:1184-1242. [PMID: 34512225 PMCID: PMC8419240 DOI: 10.17179/excli2021-3890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/02/2021] [Indexed: 11/22/2022]
Abstract
Arsenic is well-recognized as one of the most hazardous elements which is characterized by its omnipresence throughout the environment in various chemical forms. From the simple inorganic arsenite (iAsIII) and arsenate (iAsV) molecules, a multitude of more complex organic species are biologically produced through a process of metabolic transformation with biomethylation being the core of this process. Because of their differential toxicity, speciation of arsenic-based compounds is necessary for assessing health risks posed by exposure to individual species or co-exposure to several species. In this regard, exposure assessment is another pivotal factor that includes identification of the potential sources as well as routes of exposure. Identification of arsenic impact on different physiological organ systems, through understanding its behavior in the human body that leads to homeostatic derangements, is the key for developing strategies to mitigate its toxicity. Metabolic machinery is one of the sophisticated body systems targeted by arsenic. The prominent role of cytochrome P450 enzymes (CYPs) in the metabolism of both endobiotics and xenobiotics necessitates paying a great deal of attention to the possible effects of arsenic compounds on this superfamily of enzymes. Here we highlight the toxicologically relevant arsenic species with a detailed description of the different environmental sources as well as the possible routes of human exposure to these species. We also summarize the reported findings of experimental investigations evaluating the influence of various arsenicals on different members of CYP superfamily using human-based models.
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Affiliation(s)
- Mahmoud A. El-Ghiaty
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Ayman O.S. El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
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15
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Salmeri N, Villanacci R, Ottolina J, Bartiromo L, Cavoretto P, Dolci C, Lembo R, Schimberni M, Valsecchi L, Viganò P, Candiani M. Maternal Arsenic Exposure and Gestational Diabetes: A Systematic Review and Meta-Analysis. Nutrients 2020; 12:E3094. [PMID: 33050632 DOI: 10.3390/nu12103094] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/01/2020] [Accepted: 10/09/2020] [Indexed: 12/17/2022] Open
Abstract
Gestational diabetes mellitus (GDM) is a metabolic complication associated with adverse outcomes for mother and fetus. Arsenic (As) exposure has been suggested as a possible risk factor for its development. The aim of this meta-analysis was to provide a comprehensive overview of published evidence on the association between As and GDM. The systematic search from PubMed, MEDLINE, and Scopus was limited to full-length manuscripts published in peer-reviewed journals up to April 2020, identifying fifty articles. Ten studies met the inclusion criteria, nine for quantitative synthesis with a total of n = 1984 GDM cases. The overall pooled risk was 1.56 (95% Confidence Interval - CI = 1.23, 1.99) with moderate heterogeneity (χ2 = 21.95; I2% = 64). Several differences among the included studies that may account for heterogeneity were investigated. Stratification for exposure indicator confirmed a positive association for studies assessing urine As. A slightly higher risk was detected pooling studies based in Asia rather than in North America. Stratification for GDM diagnostic criteria showed higher risks when diagnosis was made according to the Canadian Diabetes Association (CDA-SOGC) or World Health Organization (WHO) criteria, whereas a lower risk was observed when adopting the American Diabetes Association (ADA) criteria. These results provide additional evidence for a possible association between As exposure and GDM, although the data need to be interpreted with caution due to heterogeneity.
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16
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Wei Y, Shi Q, Wang Z, Zhang R, Su L, Quamruzzaman Q, Rahman M, Chen F, Christiani DC. Maternal/fetal metabolomes appear to mediate the impact of arsenic exposure on birth weight: A pilot study. J Expo Sci Environ Epidemiol 2017; 27:313-319. [PMID: 27966664 PMCID: PMC5972365 DOI: 10.1038/jes.2016.74] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/30/2016] [Accepted: 10/04/2016] [Indexed: 05/19/2023]
Abstract
Arsenic exposure has been associated with low birth weight. However, the underlying mechanisms are not well understood. Alterations to metabolites may act as causal mediators of the effect of arsenic exposure on low birth weight. This pilot study aimed to explore the role of metabolites in mediating the association of arsenic exposure on infant birth weight. Study samples were selected from a well-established prospectively enrolled cohort in Bangladesh comprising 35 newborns and a subset of 20 matched mothers. Metabolomics profiling was performed on 35 cord blood samples and 20 maternal peripheral blood samples collected during the second trimester of pregnancy. Inorganic arsenic (iAs) exposure was evaluated via cord blood samples and maternal toenail samples collected during the first trimester. Multiple linear regression and mediation analyses were used to explore the relationship between iAs exposure, metabolite alterations, and low birth weight. Cord blood arsenic level was correlated with elevated levels of 17-methylstearate, laurate (12:0) and 4-vinylphenol sulfate along with lower birth weight. Prenatal maternal toenail iAs level was associated with two peripheral blood metabolites (butyrylqlycine and tartarate), which likely contributed to higher cord blood iAs levels both independently and interactively. Findings of this pilot study indicate that both intrauterine and maternal peripheral blood metabolites appear to influence the toxic effect of inorganic arsenic exposure on low birth weight.
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Affiliation(s)
- Yongyue Wei
- Department of Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
- Joint Laboratory of Health and Environmental Risk Assessment (HERA), Nanjing Medical University School of Public Health/Harvard School of Public Health, Nanjing, China
| | - Qianwen Shi
- Department of Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhaoxi Wang
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - Ruyang Zhang
- Department of Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
- Joint Laboratory of Health and Environmental Risk Assessment (HERA), Nanjing Medical University School of Public Health/Harvard School of Public Health, Nanjing, China
| | - Li Su
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | | | | | - Feng Chen
- Department of Biostatistics, Ministry of Education Key Laboratory for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
- Joint Laboratory of Health and Environmental Risk Assessment (HERA), Nanjing Medical University School of Public Health/Harvard School of Public Health, Nanjing, China
| | - David C. Christiani
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
- Joint Laboratory of Health and Environmental Risk Assessment (HERA), Nanjing Medical University School of Public Health/Harvard School of Public Health, Nanjing, China
- Department of Medicine, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
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17
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Lin PID, Bromage S, Mostofa MG, Allen J, Oken E, Kile ML, Christiani DC. Associations between Diet and Toenail Arsenic Concentration among Pregnant Women in Bangladesh: A Prospective Study. Nutrients 2017; 9:nu9040420. [PMID: 28441747 PMCID: PMC5409759 DOI: 10.3390/nu9040420] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/18/2017] [Accepted: 04/20/2017] [Indexed: 12/27/2022] Open
Abstract
This prospective study evaluated the relationship between long-term dietary habits and total arsenic (As) concentration in toenail clippings in a cohort of 1616 pregnant women in the Bangladeshi administrative regions of Sirajdikhan and Pabna Sadar. Diet was assessed at Gestation Week 28 and at Postpartum Month 1, using a locally-validated dish-based semi-quantitative food-frequency questionnaire. Toenail As concentration was analyzed by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry. Associations between natural log-transformed consumption of individual food items and temporally matched natural log-transformed toenail As concentration were quantified using general linear models that accounted for As concentration in the primary drinking water source and other potential confounders. The analysis was stratified by As in drinking water (≤50 μg/L versus >50 μg/L) and the time of dietary assessment (Gestation Week 28 versus Postpartum Week 1). Interestingly, toenail As was not significantly associated with consumption of plain rice as hypothesized. However, toenail As was positively associated with consumption of several vegetable, fish and meat items and was negatively associated with consumption of rice, cereal, fruits, and milk based food items. Further studies in pregnant women are needed to compare As metabolism at different levels of As exposure and the interaction between dietary composition and As absorption.
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Affiliation(s)
- Pi-I D Lin
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80709, Taiwan.
| | - Sabri Bromage
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - Md Golam Mostofa
- Department of Environmental Research, Dhaka Community Hospital, Dhaka 1217, Bangladesh.
| | - Joseph Allen
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA 02115, USA.
| | - Molly L Kile
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - David C Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80709, Taiwan.
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18
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Sripaoraya K, Siriwong W, Pavittranon S, Chapman RS. Environmental arsenic exposure and risk of diabetes type 2 in Ron Phibun subdistrict, Nakhon Si Thammarat Province, Thailand: unmatched and matched case-control studies. Risk Manag Healthc Policy 2017; 10:41-48. [PMID: 28442938 PMCID: PMC5396935 DOI: 10.2147/rmhp.s128277] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background There are inconsistent findings on associations between low-to-moderate level of arsenic in water and diabetes risk from previous epidemiological reports. In Ron Phibun subdistrict, Nakhon Si Thammarat Province, Thailand, a low level of arsenic exposure among population was observed and increased diabetes mellitus (DM) rate was identified. Objectives We aimed to investigate the association between determinants (including low-level water arsenic exposure) of DM type 2 risk among residents of three villages of Ron Phibun subdistrict, Nakhon Si Thammarat Province. Materials and methods Secondary data from two previous community based-studies, conducted in 2000 and 2008, were utilized. Data on independent variables relating to arsenic exposure and sociodemographic characteristics were taken from questionnaires and worksheets for health-risk screening. Water samples collected during household visit were sent for analysis of arsenic level at certified laboratories. Diabetes cases (N=185) were those who had been diagnosed with DM type 2. Two groups of controls, one unmatched to cases (n=200) and one pair matched on age and gender (n=200), were selected for analysis as unmatched and matched case–control studies, respectively. A multiple imputation technique was used to impute missing values of independent variables. Multivariable logistic regression models, with independent variables for arsenic exposure and sociodemographic characteristics, were constructed. The unmatched and matched data sets were analyzed using unconditional and conditional logistic analyses, respectively. Results Older age, body mass index (BMI), having a history of illness in siblings and parents, and drinking were associated with increased DM type 2 risk. We found no convincing association between DM type 2 risk and water arsenic concentration in either study. Conclusion We did not observe meaningful association between diabetes risk and the low-to-moderate arsenic levels observed in this study. Further research is needed to confirm this finding in the study area and elsewhere in Thailand.
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Affiliation(s)
- Kwanyuen Sripaoraya
- College of Public Health Sciences, Chulalongkorn University, Bangkok.,Medical Life Sciences Institute, Department of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand
| | - Wattasit Siriwong
- College of Public Health Sciences, Chulalongkorn University, Bangkok
| | - Sumol Pavittranon
- Medical Life Sciences Institute, Department of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand
| | - Robert S Chapman
- College of Public Health Sciences, Chulalongkorn University, Bangkok
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19
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Karakulak UN, Gunduzoz M, Ayturk M, Tek Ozturk M, Tutkun E, Yilmaz OH. Assessment of heart rate response to exercise and recovery during treadmill testing in arsenic-exposed workers. Ann Noninvasive Electrocardiol 2017; 22. [PMID: 28247524 DOI: 10.1111/anec.12437] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/05/2017] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Arsenic exposure is associated with various cardiovascular diseases. The aim of the present study was to assess cardiac autonomic function via heart rate response to exercise and recovery period of treadmill testing in arsenic-exposed workers. METHODS Sixty-five (65) occupationally arsenic-exposed workers and 35 healthy controls were enrolled. Blood and urinary arsenic levels were analyzed and symptom limited maximal treadmill exercise test were performed. Chronotropic response to exercise including age-predicted maximal heart rate (APMHR), heart rate reserve (HRreserve ), age-predicted HRreserve (APHRreserve ) and adjusted HRreserve and 1st-, 2nd-and 3rd-min heart rate recovery (HRR) indices were calculated. RESULTS Baseline clinical and echocardiographic parameters, exercise test duration, resting and maximal heart rate, peak exercise capacity, HRreserve , APMHR, APHRreserve , and adjusted HRreserve were found to be similar between groups. HRR1 (22.0 ± 4.3 vs. 24.3 ± 3.1 bpm, p = .003) and HRR2 (43.2 ± 6.2 vs. 46.7 ± 6.4 bpm, p = .012) were significantly lower in arsenic-exposed workers compared to controls. Blood and urinary arsenic levels negatively correlated with HRR1 (r = -.477, p < .001 and r = -.438, p < .001, respectively) and HRR2 (r = -.507, p < .001 and r = -.412, p < .001 respectively). CONCLUSIONS Arsenic-exposed workers had lower HRR indices than normal subjects but chronotropic response were similar. Cardiac autonomic dysregulation may be one of the cardiovascular consequences of arsenic exposure.
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Affiliation(s)
| | - Meside Gunduzoz
- Department of Clinical Toxicology, Occupational Diseases Hospital, Ankara, Turkey
| | - Mehmet Ayturk
- Department of Cardiology, Kecioren Research and Training Hospital, Ankara, Turkey
| | - Mujgan Tek Ozturk
- Department of Cardiology, Kecioren Research and Training Hospital, Ankara, Turkey
| | - Engin Tutkun
- Department of Public Health, Faculty of Medicine, Bozok University, Yozgat, Turkey
| | - Omer Hinc Yilmaz
- Department of Clinical Toxicology, Occupational Diseases Hospital, Ankara, Turkey
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20
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Zhang A, Li H, Xiao Y, Chen L, Zhu X, Li J, Ma L, Pan X, Chen W, He Z. Aberrant methylation of nucleotide excision repair genes is associated with chronic arsenic poisoning. Biomarkers 2016; 22:429-438. [PMID: 27685703 DOI: 10.1080/1354750x.2016.1217933] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVE To define whether aberrant methylation of DNA repair genes is associated with chronic arsenic poisoning. METHODS Hundred and two endemic arsenicosis patients and 36 healthy subjects were recruited. Methylight and bisulfite sequencing (BSP) assays were used to examine the methylation status of ERCC1, ERCC2 and XPC genes in peripheral blood lymphocytes (PBLs) and skin lesions of arsenicosis patients and NaAsO2-treated HaCaT cells. RESULTS Hypermethylation of ERCC1 and ERCC2 and suppressed gene expression were found in PBLs and skin lesions of arsenicosis patients and was correlated with the level of arsenic exposure. Particularly, the expression of ERCC1 and ERCC2 was associated with the severity of skin lesions. In vitro studies revealed an induction of ERCC2 hypermethylation and decreased mRNA expression in response to NaAsO2 treatment. CONCLUSION Hypermethylation of ERCC1 and ERCC2 and concomitant suppression of gene expression might be served as the epigenetic marks associated with arsenic exposure and adverse health effects.
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Affiliation(s)
- Aihua Zhang
- a The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education Department of Toxicology , School of Public Health, Guizhou Medical University , Guiyang , China
| | - Huiyao Li
- b Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health, Sun Yat-Sen University , Guangzhou , China
| | - Yun Xiao
- a The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education Department of Toxicology , School of Public Health, Guizhou Medical University , Guiyang , China
| | - Liping Chen
- b Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health, Sun Yat-Sen University , Guangzhou , China
| | - Xiaonian Zhu
- c Department of Toxicology, School of Public Health , Guilin Medical University , Guilin , China
| | - Jun Li
- a The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education Department of Toxicology , School of Public Health, Guizhou Medical University , Guiyang , China
| | - Lu Ma
- a The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education Department of Toxicology , School of Public Health, Guizhou Medical University , Guiyang , China
| | - Xueli Pan
- a The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education Department of Toxicology , School of Public Health, Guizhou Medical University , Guiyang , China
| | - Wen Chen
- b Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health, Sun Yat-Sen University , Guangzhou , China
| | - Zhini He
- b Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health, Sun Yat-Sen University , Guangzhou , China
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Miao Z, Wu L, Lu M, Meng X, Gao B, Qiao X, Zhang W, Xue D. Analysis of the transcriptional regulation of cancer-related genes by aberrant DNA methylation of the cis-regulation sites in the promoter region during hepatocyte carcinogenesis caused by arsenic. Oncotarget 2016; 6:21493-506. [PMID: 26046465 PMCID: PMC4673281 DOI: 10.18632/oncotarget.4085] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 05/11/2015] [Indexed: 12/12/2022] Open
Abstract
Liver is the major organ for arsenic methylation metabolism and may be the potential target of arsenic-induced cancer. In this study, normal human liver cell was treated with arsenic trioxide, and detected using DNA methylation microarray. Some oncogenes, tumor suppressor genes, transcription factors (TF), and tumor-associated genes (TAG) that have aberrant DNA methylation have been identified. However, simple functional studies of genes adjacent to aberrant methylation sites cannot well reflect the regulatory relationship between DNA methylation and gene transcription during the pathogenesis of arsenic-induced liver cancer, whereas a further analysis of the cis-regulatory elements and their trans-acting factors adjacent to DNA methylation can more precisely reflect the relationship between them. MYC and MAX (MYC associated factor X) were found to participating cell cycle through a bioinformatics analysis. Additionally, it was found that the hypomethylation of cis-regulatory sites in the MYC promoter region and the hypermethylation of cis-regulatory sites in the MAX promoter region result in the up-regulation of MYC mRNA expression and the down-regulation of MAX mRNA, which increased the hepatocyte carcinogenesis tendency.
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Affiliation(s)
- Zhuang Miao
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
| | - Lin Wu
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
| | - Ming Lu
- Department of Surgery, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Xianzhi Meng
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
| | - Bo Gao
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
| | - Xin Qiao
- Department of Surgery, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Weihui Zhang
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
| | - Dongbo Xue
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, PR China
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Afolabi OK, Wusu AD, Ogunrinola OO, Abam EO, Babayemi DO, Dosumu OA, Onunkwor OB, Balogun EA, Odukoya OO, Ademuyiwa O. Paraoxonase 1 activity in subchronic low-level inorganic arsenic exposure through drinking water. Environ Toxicol 2016; 31:154-162. [PMID: 25082665 DOI: 10.1002/tox.22030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 07/12/2014] [Accepted: 07/13/2014] [Indexed: 06/03/2023]
Abstract
Epidemiological evidences indicate close association between inorganic arsenic exposure via drinking water and cardiovascular diseases. While the exact mechanism of this arsenic-mediated increase in cardiovascular risk factors remains enigmatic, epidemiological studies indicate a role for paraoxonase 1 (PON1) in cardiovascular diseases. To investigate the association between inorganic arsenic exposure and cardiovascular diseases, rats were exposed to sodium arsenite (trivalent; 50, 100, and 150 ppm As) and sodium arsenate (pentavalent; 100, 150, and 200 ppm As) in their drinking water for 12 weeks. PON1 activity towards paraoxon (PONase) and phenylacetate (AREase) in plasma, lipoproteins, hepatic, and brain microsomal fractions were determined. Inhibition of PONase and AREase in plasma and HDL characterized the effects of the two arsenicals. While the trivalent arsenite inhibited PONase by 33% (plasma) and 46% (HDL), respectively, the pentavalent arsenate inhibited the enzyme by 41 and 34%, respectively. AREase activity was inhibited by 52 and 48% by arsenite, whereas the inhibition amounted to 72 and 67%, respectively by arsenate. The pattern of inhibition in plasma and HDL indicates that arsenite induced a dose-dependent inhibition of PONase whereas arsenate induced a dose-dependent inhibition of AREase. In the VLDL + LDL, arsenate inhibited PONase and AREase while arsenite inhibited PONase. In the hepatic and brain microsomal fractions, only the PONase enzyme was inhibited by the two arsenicals. The inhibition was more pronounced in the hepatic microsomes where a 70% inhibition was observed at the highest dose of pentavalent arsenic. Microsomal cholesterol was increased by the two arsenicals resulting in increased cholesterol/phospholipid ratios. Our findings indicate that decreased PON1 activity observed in arsenic exposure may be an incipient biochemical event in the cardiovascular effects of arsenic. Modulation of PON1 activity by arsenic may also be mediated through changes in membrane fluidity brought about by changes in the concentration of cholesterol in the microsomes.
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Affiliation(s)
- Olusegun K Afolabi
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
- Department of Biochemistry, Ladoke Akintola University of Technology, Ogbomosho, Nigeria
| | - Adedoja D Wusu
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
- Department of Biochemistry, Lagos State University, Ojoo, Nigeria
| | - Olufunmilayo O Ogunrinola
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
- Department of Biochemistry, Lagos State University, Ojoo, Nigeria
| | - Esther O Abam
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - David O Babayemi
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - Oluwatosin A Dosumu
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - Okechukwu B Onunkwor
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - Elizabeth A Balogun
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
- Department of Biochemistry, University of Ilorin, Nigeria
| | - Olusegun O Odukoya
- Department of Chemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | - Oladipo Ademuyiwa
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
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Wu MM, Lee CH, Hsu LI, Cheng WF, Lee TC, Wang YH, Chiou HY, Chen CJ. Effect of heme oxygenase-1 gene promoter polymorphism on cancer risk by histological subtype: A prospective study in arseniasis-endemic areas in Taiwan. Int J Cancer 2015; 138:1875-86. [PMID: 26566708 DOI: 10.1002/ijc.29926] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 11/03/2015] [Indexed: 11/07/2022]
Abstract
Heme oxygenase (HO)-1 is upregulated by many stressful stimuli, including arsenic. A GT-repeat ((GT)n) polymorphism in the HO-1 gene promoter inversely modulates the levels of HO-1 induction. Previous HO-1 (GT)n polymorphism studies in relation to cancer risk have shown disparate results. We prospectively investigated the associations between HO-1 (GT)n polymorphism and cancer risk related to arsenic from drinking water. Totally, 1,013 participants from community-based cohorts of arseniasis-endemic areas in Taiwan were followed for 13 years. Allelic polymorphisms were classified into long (L, ≥ 27 (GT)n) and short (S, <27 (GT)n). Newly developed cases were identified through linkage with National Cancer Registry of Taiwan. Multivariate Cox proportional hazard methods were used to evaluate effects of the HO-1 polymorphism alone or combined with arsenic exposure. Results showed that participants with the S/S genotype had an increased risk of Bowen's disease (HR = 10.49; 95% CI: 2.77-39.7), invasive skin cancer (HR = 2.99; 95% CI: 1.13-7.87), and lung squamous cell carcinoma (HR = 3.39; 95% CI: 1.15-9.95) versus those with L/S or L/L genotype. The S/S genotype combined with high arsenic exposure (>300 μg/L) had a greater risk of skin cancer compared to the genotype alone. Consistent with previous findings, participants with the S-allele had a reduced risk of lung adenocarcinoma (HR = 0.21; 95% CI: 0.03-0.68) versus those with L/L genotype. There were no significant differences in risk of urothelial carcinoma among the three genotypes. Associations of HO-1 (GT)n polymorphism with cancer risk differs by histological subtype and the polymorphism should be considered a modifier in the risk assessment of arsenic exposure.
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Affiliation(s)
- Meei-Maan Wu
- School of Public Health, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Oncology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung and Chang Gung University College of Medicine, Taiwan
| | - Ling-I Hsu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wen-Fang Cheng
- Graduate Institute of Oncology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Te-Chang Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yuang-Hung Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Hung-Yi Chiou
- School of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Chien-Jen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
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Abstract
Arsenic is a major public health concern worldwide. While it is an established carcinogen and associated with a number of other adverse health outcomes, the molecular mechanisms underlying arsenic toxicity are not completely clarified. There is mounting evidence from human studies suggesting that arsenic exposure is associated with epigenetic alterations, including DNA methylation. In this review, we summarize several recent human studies that have evaluated arsenic exposure using the Illumina HumanMethylation 450K BeadChip, which interrogates more than 485,000 methylation sites across the genome. Many of these studies have observed novel regions of the genome associated with arsenic exposure. However, few studies have evaluated the biological and functional relevance of these DNA methylation changes, which are still needed. We emphasize the need for future studies to replicate the identified DNA methylation signals as well as assess whether these markers are associated with risk of arsenic-related diseases.
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Affiliation(s)
- Maria Argos
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, MC923, Chicago, IL, 60612, USA,
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Yáñez J, Mansilla HD, Santander IP, Fierro V, Cornejo L, Barnes RM, Amarasiriwardena D. Urinary arsenic speciation profile in ethnic group of the Atacama desert (Chile) exposed to variable arsenic levels in drinking water. J Environ Sci Health A Tox Hazard Subst Environ Eng 2015; 50:1-8. [PMID: 25438126 DOI: 10.1080/10934529.2015.964594] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ethnic groups from the Atacama Desert (known as Atacameños) have been exposed to natural arsenic pollution for over 5000 years. This work presents an integral study that characterizes arsenic species in water used for human consumption. It also describes the metabolism and arsenic elimination through urine in a chronically exposed population in northern Chile. In this region, water contained total arsenic concentrations up to 1250 μg L(-1), which was almost exclusively As(V). It is also important that this water was ingested directly from natural water sources without any treatment. The ingested arsenic was extensively methylated. In urine 93% of the arsenic was found as methylated arsenic species, such as monomethylarsonic acid [MMA(V)] and dimethylarsinic acid [DMA(V)]. The original ingested inorganic species [As(V)], represent less than 1% of the total urinary arsenic. Methylation activity among individuals can be assessed by measuring primary [inorganic As/methylated As] and secondary methylation [MMA/DMA] indexes. Both methylation indexes were 0.06, indicating a high biological converting capability of As(V) into MMA and then MMA into DMA, compared with the control population and other arsenic exposed populations previously reported.
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Affiliation(s)
- Jorge Yáñez
- a Faculty of Chemical Sciences, Department of Analytical and Inorganic Chemistry , University of Concepción , Concepción , Chile
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Ahmed S, Moore SE, Kippler M, Gardner R, Hawlader MDH, Wagatsuma Y, Raqib R, Vahter M. Arsenic exposure and cell-mediated immunity in pre-school children in rural Bangladesh. Toxicol Sci 2014; 141:166-75. [PMID: 24924402 DOI: 10.1093/toxsci/kfu113] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Prenatal arsenic exposure has been associated with reduced thymic index and increased morbidity in infants, indicating arsenic-related impaired immune function. We aimed at elucidating potential effects of pre- and postnatal arsenic exposure on cell-mediated immune function in pre-school aged children. Children born in a prospective mother-child cohort in rural Bangladesh were followed up at 4.5 years of age (n = 577). Arsenic exposure was assessed by concentrations of arsenic metabolites (U-As) in child urine and maternal urine during pregnancy, using high-performance liquid chromatography online with inductively coupled plasma mass spectrometry. For assessment of delayed type hypersensitivity response, an intradermal injection of purified protein derivative (PPD) was given to Bacillus Calmette-Guerin vaccinated children. The diameter (mm) of induration was measured after 48-72 h. Plasma concentrations of 27 cytokines were analyzed by a multiplex cytokine assay. Children's concurrent, but not prenatal, arsenic exposure was associated with a weaker response to the injected PPD. The risk ratio (RR) of not responding to PPD (induration <5 mm) was 1.37 (95% confidence interval (CI): 1.07, 1.74) in children in the highest quartile of U-As (range 126-1228 μg/l), compared with the lowest (range 12-34 μg/l). The p for trend across the quartiles was 0.003. The association was stronger in undernourished children. Children's U-As in tertiles was inversely associated with two out of 27 cytokines only, i.e., IL-2 and TNF-α, both Th1 cytokines (in the highest tertile, regression coefficients (95% CI): -1.57 (-2.56, -0.57) and -4.53 (-8.62, -0.42), respectively), but not with Th2 cytokines. These associations were particularly strong in children with recent infections. In conclusion, elevated childhood arsenic exposure appeared to reduce cell-mediated immunity, possibly linked to reduced concentrations of Th1 cytokines.
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Affiliation(s)
- Sultan Ahmed
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden Centre for Vaccine Sciences, International Centre for Diarrheal Disease Research, Bangladesh (ICDDR,B), Dhaka, Bangladesh
| | - Sophie E Moore
- MRC International Nutrition Group, London School of Hygiene and Tropical Medicine, London, UK, and MRC Keneba, The Gambia
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Renee Gardner
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - M D H Hawlader
- Centre for Vaccine Sciences, International Centre for Diarrheal Disease Research, Bangladesh (ICDDR,B), Dhaka, Bangladesh Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yukiko Wagatsuma
- Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Rubhana Raqib
- Centre for Vaccine Sciences, International Centre for Diarrheal Disease Research, Bangladesh (ICDDR,B), Dhaka, Bangladesh
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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Yunus FM, Rahman MJ, Alam MZ, Hore SK, Rahman M. Relationship between arsenic skin lesions and the age of natural menopause. BMC Public Health 2014; 14:419. [PMID: 24886424 PMCID: PMC4038403 DOI: 10.1186/1471-2458-14-419] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Accepted: 04/22/2014] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Chronic exposure to arsenic is associated with neoplastic, cardiovascular, endocrine, neuro-developmental disorders and can have an adverse effect on women's reproductive health outcomes. This study examined the relationship between arsenic skin lesions (a hallmark sign of chronic arsenic poisoning) and age of natural menopause (final menopausal period) in populations with high levels of arsenic exposure in Bangladesh. METHODS We compared menopausal age in two groups of women--with and without arsenic skin lesions; and presence of arsenic skin lesions was used as an indicator for chronic arsenic exposure. In a cross-sectional study, a total of 210 participants were randomly identified from two ongoing studies--participants with arsenic skin lesions were identified from an ongoing clinical trial and participants with no arsenic skin lesions were identified from an ongoing cohort study. Mean age of menopause between these two groups were calculated and compared. Multivariable linear regression was used to estimate the relationship between the status of the arsenic skin lesions and age of natural menopause in women. RESULTS Women with arsenic skin lesions were 1.5 years younger (p <0.001) at the time of menopause compared to those without arsenic skin lesions. After adjusting with contraceptive use, body mass index, urinary arsenic level and family history of premature menopause, the difference between the groups' age at menopause was 2.1 years earlier (p <0.001) for respondents with arsenic skin lesions. CONCLUSIONS The study showed a statistically significant association between chronic exposure to arsenic and age at menopause. Heavily exposed women experienced menopause two years earlier than those with lower or no exposure.
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Affiliation(s)
- Fakir Md Yunus
- BRAC Research and Evaluation Division, BRAC Centre, 75 Mohakhali, Dhaka 1212, Bangladesh
| | - Musarrat Jabeen Rahman
- ICDDR, B – Water, Sanitation and Hygiene Research Group, Center for Communicable Diseases (CCD), Moyeen Center, House-9b, Road-3, Gulshan-1, Dhaka 1212, Bangladesh
| | - Md Zahidul Alam
- Department of Biology, University of Texas at Arlington, 76010 Arlington, TX, USA
| | - Samar Kumar Hore
- ICDDR, B- Chronic Disease Epidemiology and Genetics Research Group, Centre for Control of Chronic Diseases (CCCD), 68 Shahid Tajuddin Ahmed Sharani, Mohakhali, Dhaka 1212, Bangladesh
| | - Mahfuzar Rahman
- ICDDR, B – Public Health Sciences Division, the Centre for Health and Population Research, 68 Shahid Tajuddin Ahmed Sharani, Mohakhali, Dhaka 1212, Bangladesh
- UChicago Research Bangladesh, House 4, Road 2B, Sector 4, Uttara, Dhaka, Bangladesh
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28
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Abstract
Mechanistic evidence suggests that arsenic exposure from drinking water increases the production of reactive oxygen species and influences inflammatory responses and endothelial nitric oxide homeostasis. These arsenic-induced events may lead to endothelial dysfunction that increases the risk of atherosclerosis and cardiovascular disease. We reviewed accumulating epidemiologic evidence that evaluated the association between arsenic exposure and intermediate markers and subclinical measures that predict future cardiovascular risk. Cross-sectional studies have indicated positive associations between high or low-to-moderate levels of arsenic exposure with indices of subclinical atherosclerosis, QT interval prolongation, and circulating markers of endothelial dysfunction. The evidence is limited for other intermediate endpoints such as markers of oxidative stress and inflammation, QT dispersion, and lipid profiles. Prospective studies are needed to enhance the causal inferences of arsenic's effects on subclinical endpoints of cardiovascular disease, especially at lower arsenic exposure levels.
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Affiliation(s)
- Fen Wu
- Department of Population Health, New York University School of Medicine, New York, NY
| | - Peter Molinaro
- Department of Population Health, New York University School of Medicine, New York, NY
| | - Yu Chen
- Department of Population Health, New York University School of Medicine, New York, NY
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29
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Liu X, Zheng Y, Zhang W, Zhang X, Ning H, Liu K, LIoyd-Jones DM, Fornage M, He K, Hou L. Blood methylomics in response to arsenic exposure in a low-exposed US population. J Expo Sci Environ Epidemiol 2014; 24:145-9. [PMID: 24368509 PMCID: PMC4167014 DOI: 10.1038/jes.2013.89] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 10/04/2013] [Accepted: 10/05/2013] [Indexed: 05/14/2023]
Abstract
Exposure to arsenic (As) has been associated with a number of diseases such as cancers, cardiovascular diseases (CVD), and neurological disorders. To explore the possible underlying epigenetic mechanisms, a nested case-control study was conducted within the Coronary Artery Risk Development in Young Adults (CARDIA) study by randomly selecting 46 non-smoker and non-diabetic White participants with low (N=23) and high (N=23) As exposure based on toenail total As measures at examination year 2. We conducted methylomic profiling of white blood cell (WBC) DNA collected at examination year 15 using the Illumina HumanMethylation450 BeadChip, and performed association tests using multiple linear regression models adjusting for age, sex, and estimated WBC proportions. We observed 22 CpG sites with methylation levels associated with high As exposure at a nominal significance level of 10(-4). However, the statistical significance disappeared after correction for multiple testing. Some genes annotated by these 22 CpG sites are known to be involved in As-associated diseases. Replication in larger samples of individuals with low levels of As exposure will be required.
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Affiliation(s)
- Xin Liu
- Mary Ann and J. Milburn Smith Child Health Research Program, Ann & Robert H. Lurie Children's Hospital of Chicago Research Center, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Yinan Zheng
- Driskill Graduate Program (DGP) in Life Sciences, Northwestern University Biomedical Informatics Center (NUBIC), NUCATS, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Wei Zhang
- Department of Pediatrics, University of Illinois, Chicago, IL, USA
| | - Xiao Zhang
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Hongyan Ning
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Kiang Liu
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Donald M LIoyd-Jones
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Myriam Fornage
- Institute of Molecular Medicine and Division of Epidemiology, School of Public Health, University of Texas Sciences Center, Houston, TX, USA
| | - Ka He
- Department of Epidemiology and Biostatistics, Indiana University School of Public Health, Bloomington, IN, USA
| | - Lifang Hou
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Correspondence and reprint requests should be addressed to: Lifang Hou MD, PhD, Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, 680 N Lake Shore Drive, Suite 1400, Chicago, IL 60611 USA, Telephone: 312-503-4798, Fax: (312) 908-9588,
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30
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Saha KK, Engström A, Hamadani JD, Tofail F, Rasmussen KM, Vahter M. Pre- and postnatal arsenic exposure and body size to 2 years of age: a cohort study in rural Bangladesh. Environ Health Perspect 2012; 120:1208-14. [PMID: 22504586 PMCID: PMC3440068 DOI: 10.1289/ehp.1003378] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 04/13/2012] [Indexed: 05/18/2023]
Abstract
BACKGROUND Exposure to arsenic via drinking water has been associated with adverse pregnancy outcomes and infant morbidity and mortality. Little is known, however, about the effects of arsenic on child growth. OBJECTIVE We assessed potential effects of early-life arsenic exposure on weight and length of children from birth to 2 years of age. METHODS We followed 2,372 infants born in a population-based intervention trial in rural Bangladesh. Exposure was assessed by arsenic concentrations in urine (U-As) of mothers (gestational weeks 8 and 30) and children (18 months old). Child anthropometry was measured monthly in the first year and quarterly in the second. Linear regression models were used to examine associations of U-As (by quintiles) with child weight and length, adjusted for age, maternal body mass index, socioeconomic status, and sex (or stratified by sex). RESULTS Median (10th-90th percentiles) U-As concentrations were about 80 (25-400) µg/L in the mothers and 34 (12-159) µg/L in the children. Inverse associations of maternal U-As with child's attained weight and length at 3-24 months were markedly attenuated after adjustment. However, associations of U-As at 18 months with weight and length at 18-24 months were more robust, particularly in girls. Compared with girls in the first quintile of U-As (< 16 µg/L), those in the fourth quintile (26-46 µg/L) were almost 300 g lighter and 0.7 cm shorter, and had adjusted odds ratios (95% confidence interval) for underweight and stunting of 1.57 (1.02-2.40) and 1.58 (1.05-2.37), respectively, at 21 months. CONCLUSIONS Postnatal arsenic exposure was associated with lower body weight and length among girls, but not boys.
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Affiliation(s)
- Kuntal K Saha
- International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
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31
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Rivera-Núñez Z, Meliker JR, Meeker JD, Slotnick MJ, Nriagu JO. Urinary arsenic species, toenail arsenic, and arsenic intake estimates in a Michigan population with low levels of arsenic in drinking water. J Expo Sci Environ Epidemiol 2012; 22:182-90. [PMID: 21878987 PMCID: PMC10037220 DOI: 10.1038/jes.2011.27] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 04/14/2011] [Indexed: 05/21/2023]
Abstract
The large disparity between arsenic concentrations in drinking water and urine remains unexplained. This study aims to evaluate predictors of urinary arsenic in a population exposed to low concentrations (≤50 μg/l) of arsenic in drinking water. Urine and drinking water samples were collected from a subsample (n=343) of a population enrolled in a bladder cancer case-control study in southeastern Michigan. Total arsenic in water and arsenic species in urine were determined using ICP-MS: arsenobetaine (AsB), arsenite (As[III]), arsenate (As[V]), methylarsenic acid (MMA[V]), and dimethylarsenic acid (DMA[V]). The sum of As[III], As[V], MMA[V], and DMA[V] was denoted as SumAs. Dietary information was obtained through a self-reported food intake questionnaire. Log(10)-transformed drinking water arsenic concentration at home was a significant (P<0.0001) predictor of SumAs (R(2)=0.18). Associations improved (R(2)=0.29, P<0.0001) when individuals with less than 1 μg/l of arsenic in drinking water were removed and further improved when analyses were applied to individuals who consumed amounts of home drinking water above the median volume (R(2)=0.40, P<0.0001). A separate analysis indicated that AsB and DMA[V] were significantly correlated with fish and shellfish consumption, which may suggest that seafood intake influences DMA[V] excretion. The Spearman correlation between arsenic concentration in toenails and SumAs was 0.36 and between arsenic concentration in toenails and arsenic concentration in water was 0.42. Results show that arsenic exposure from drinking water consumption is an important determinant of urinary arsenic concentrations, even in a population exposed to relatively low levels of arsenic in drinking water, and suggest that seafood intake may influence urinary DMA[V] concentrations.
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Affiliation(s)
- Zorimar Rivera-Núñez
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan, USA.
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Chen Y, Ahsan H, Slavkovich V, Peltier GL, Gluskin RT, Parvez F, Liu X, Graziano JH. No association between arsenic exposure from drinking water and diabetes mellitus: a cross-sectional study in Bangladesh. Environ Health Perspect 2010; 118:1299-305. [PMID: 20813654 PMCID: PMC2944093 DOI: 10.1289/ehp.0901559] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Accepted: 05/13/2010] [Indexed: 05/02/2023]
Abstract
BACKGROUND The long-term effects of arsenic exposure from drinking water at levels < 300 microg/L and the risk of diabetes mellitus remains a controversial topic. METHOD We conducted a population-based cross-sectional study using baseline data from 11,319 participants in the Health Effects of Arsenic Longitudinal Study in Araihazar, Bangladesh, to evaluate the associations of well water arsenic and total urinary arsenic concentration and the prevalence of diabetes mellitus and glucosuria. We also assessed the concentrations of well water arsenic, total urinary arsenic, and urinary arsenic metabolites in relation to blood glycosylated hemoglobin (HbA1c) levels in subsets of the study population. RESULTS More than 90% of the cohort members were exposed to drinking water with arsenic concentration < 300 microg/L. We found no association between arsenic exposure and the prevalence of diabetes. The adjusted odds ratios for diabetes were 1.00 (referent), 1.35 [95% confidence interval (CI), 0.90-2.02], 1.24 (0.82-1.87), 0.96 (0.62-1.49), and 1.11 (0.73-1.69) in relation to quintiles of time-weighted water arsenic concentrations of 0.1-8, 8-41, 41-91, 92-176, and > or = 177 microg/L, respectively, and 1.00 (referent), 1.29 (0.87-1.91), 1.05 (0.69-1.59), 0.94 (0.61-1.44), and 0.93 (0.59-1.45) in relation to quintiles of urinary arsenic concentrations of 1-36, 37-66, 67-114, 115-204, and > or = 205 microg/L, respectively. We observed no association between arsenic exposure and prevalence of glucosuria and no evidence of an association between well water arsenic, total urinary arsenic, or the composition of urinary arsenic metabolites and HbA1c level. CONCLUSIONS Our findings do not support an association of arsenic exposure from drinking water and a significantly increased risk of diabetes mellitus in the range of levels observed. Further prospective studies would be valuable in confirming the findings.
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Affiliation(s)
- Yu Chen
- Department of Environmental Medicine, New York University School of Medicine, New York, New York, USA
| | - Habibul Ahsan
- Department of Health Studies
- Department of Medicine
- Department of Human Genetics and
- Cancer Research Center, The University of Chicago, Chicago, Illinois, USA
| | - Vesna Slavkovich
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, NY, USA
| | - Gretchen Loeffler Peltier
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, NY, USA
| | - Rebecca T. Gluskin
- Department of Environmental Medicine, New York University School of Medicine, New York, New York, USA
| | - Faruque Parvez
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, NY, USA
| | - Xinhua Liu
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, NY, USA
| | - Joseph H. Graziano
- Department of Medicine
- Address correspondence to J.H. Graziano, Department of Environmental Health Sciences, New York University School of Medicine, New York, New York Mailman School of Public Health, 60 Haven Ave., New York, NY 10032 USA. Telephone: (212) 305-1678. Fax: (212) 305-4012. E-mail:
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Hsieh FI, Hwang TS, Hsieh YC, Lo HC, Su CT, Hsu HS, Chiou HY, Chen CJ. Risk of erectile dysfunction induced by arsenic exposure through well water consumption in Taiwan. Environ Health Perspect 2008; 116:532-6. [PMID: 18414639 PMCID: PMC2291004 DOI: 10.1289/ehp.10930] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Accepted: 01/15/2008] [Indexed: 05/20/2023]
Abstract
BACKGROUND Erectile dysfunction (ED) has a profound impact on the quality of life of many men. Many risk factors are associated with ED, such as aging, sex hormone levels, hypertension, cardiovascular diseases, and diabetes mellitus. Arsenic exposure could damage peripheral vessels and increase the risk of cardiovascular disease. However, the relationship between arsenic exposure and ED has seldom been evaluated. OBJECTIVES In this study we aimed to investigate whether exposure to arsenic enhances the risk of ED. METHODS We recruited 177 males >or= 50 years of age through health examinations conducted in three hospitals in Taiwan. We used a questionnaire (International Index of Erectile Function-5) to measure the level of erectile function. Sex hormones, including total testosterone and sex hormone-binding globulin, were determined by radioimmunoassay. We used another standardized questionnaire to collect background and behavioral information (e.g., cigarette smoking; alcohol, tea, or coffee drinking; and physical activity). RESULTS The prevalence of ED was greater in the arsenic-endemic area (83.3%) than in the non-arsenic-endemic area (66.7%). Subjects with arsenic exposure > 50 ppb had a significantly higher risk of developing ED than those with exposure <or= 50 ppb, after adjusting for age, cigarette smoking, diabetes mellitus, hypertension, and cardiovascular disease [odds ratio (OR) = 3.4]. Results also showed that the risk of developing severe ED was drastically enhanced by arsenic exposure (OR = 7.5), after adjusting for free testosterone and traditional risk factors of ED. CONCLUSIONS Results suggested that chronic arsenic exposure has a negative impact on erectile function.
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Affiliation(s)
- Fang-I Hsieh
- School of Public Health and
- Topnotch Stroke Research Center, Taipei Medical University, Taipei, Taiwan
| | - Ti-Sheng Hwang
- Division of Urology, Department of Surgery, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | | | | | - Chien-Tien Su
- School of Public Health and
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Hui-Shing Hsu
- Department of Urology, Lotung Poh-Ai Hospital, Lotung, Taiwan
| | - Hung-Yi Chiou
- School of Public Health and
- Topnotch Stroke Research Center, Taipei Medical University, Taipei, Taiwan
- Address correspondence to H.-Y. Chiou, School of Public Health, Topnotch Stroke Research Center, Taipei Medical University, No. 250, Wu-Hsing St., Taipei 110, Taiwan. Telephone: 886-2-23779188. Fax: 886-2-23779189. E-mail:
| | - Chien-Jen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
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Aziz SN, Boyle KJ, Rahman M. Knowledge of arsenic in drinking-water: risks and avoidance in Matlab, Bangladesh. J Health Popul Nutr 2006; 24:327-35. [PMID: 17366774 PMCID: PMC3013253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Widespread contamination of arsenic in Bangladesh has been jeopardizing the health of millions of people. Residents of Matlab, Bangladesh, are among the millions at risk. Using bivariate models in the analysis of survey data, knowledge of health risks and avoidance of arsenic exposure in response to widespread contamination of arsenic for residents of Matlab were estimated. The models examined individuals' knowledge of an arsenic problem in the household and knowledge of specific illnesses caused by arsenic exposure. The likelihood of avoiding exposure to arsenic contamination was further examined. Results of the estimation showed that individual's knowledge of arsenic problems in the household was gathered through awareness campaigns and by word of mouth and that knowledge of illnesses was predicated on education, health, presence of children, elderly and young women. Adoption of avoidance measures was not affected by exposure to arsenic-information sources, but level of education had a statistically significant positive effect on the decision to avoid arsenic exposure. Lack of convenience of safe drinking-water practices lead people to persist in drinking arsenic-contaminated water.
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Affiliation(s)
- Sonia N Aziz
- Virginia Tech, 208-A Hutcheson Hall, Blacksburg, VA 24061, USA.
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