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Khandayataray P, Samal D, Murthy MK. Arsenic and adipose tissue: an unexplored pathway for toxicity and metabolic dysfunction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:8291-8311. [PMID: 38165541 DOI: 10.1007/s11356-023-31683-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Arsenic-contaminated drinking water can induce various disorders by disrupting lipid and glucose metabolism in adipose tissue, leading to insulin resistance. It inhibits adipocyte development and exacerbates insulin resistance, though the precise impact on lipid synthesis and lipolysis remains unclear. This review aims to explore the processes and pathways involved in adipogenesis and lipolysis within adipose tissue concerning arsenic-induced diabetes. Although arsenic exposure is linked to type 2 diabetes, the specific role of adipose tissue in its pathogenesis remains uncertain. The review delves into arsenic's effects on adipose tissue and related signaling pathways, such as SIRT3-FOXO3a, Ras-MAP-AP-1, PI(3)-K-Akt, endoplasmic reticulum stress proteins, CHOP10, and GPCR pathways, emphasizing the role of adipokines. This analysis relies on existing literature, striving to offer a comprehensive understanding of different adipokine categories contributing to arsenic-induced diabetes. The findings reveal that arsenic detrimentally impacts white adipose tissue (WAT) by reducing adipogenesis and promoting lipolysis. Epidemiological studies have hinted at a potential link between arsenic exposure and obesity development, with limited research suggesting a connection to lipodystrophy. Further investigations are needed to elucidate the mechanistic association between arsenic exposure and impaired adipose tissue function, ultimately leading to insulin resistance.
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Affiliation(s)
- Pratima Khandayataray
- Department of Biotechnology, Academy of Management and Information Technology, Utkal University, Bhubaneswar, Odisha, 752057, India
| | - Dibyaranjan Samal
- Department of Biotechnology, Sri Satya Sai University of Technical and Medical Sciences, Sehore, Madhya Pradesh, 466001, India
| | - Meesala Krishna Murthy
- Department of Allied Health Sciences, Chitkara School of Health Sciences, Chitkara University, Punjab, 140401, India.
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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 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] [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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He Z, Xu Y, Ma Q, Zhou C, Yang L, Lin M, Deng P, Yang Z, Gong M, Zhang H, Lu M, Li Y, Gao P, Lu Y, He M, Zhang L, Pi H, Zhang K, Qin S, Yu Z, Zhou Z, Chen C. SOX2 modulated astrocytic process plasticity is involved in arsenic-induced metabolic disorders. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128942. [PMID: 35468398 DOI: 10.1016/j.jhazmat.2022.128942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/02/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Metabolic disorders induced by arsenic exposure have attracted great public concern. However, it remains unclear whether hypothalamus-based central regulation mechanisms are involved in this process. Here, we exposed mice to 100 μg/L arsenic in drinking water and established a chronic arsenic exposure model. Our study revealed that chronic arsenic exposure caused metabolic disorders in mice including impaired glucose metabolism and decreased energy expenditure. Arsenic exposure also impaired glucose sensing and the activation of proopiomelanocortin (POMC) neurons in the hypothalamus. In particular, arsenic exposure damaged the plasticity of hypothalamic astrocytic process. Further research revealed that arsenic exposure inhibited the expression of sex-determining region Y-Box 2 (SOX2), which decreased the expression level of insulin receptors (INSRs) and the phosphorylation of AKT. The conditional deletion of astrocytic SOX2 exacerbated arsenic-induced effects on metabolic disorders, the impairment of hypothalamic astrocytic processes, and the inhibition of INSR/AKT signaling. Furthermore, the arsenic-induced impairment of astrocytic processes and inhibitory effects on INSR/AKT signaling were reversed by SOX2 overexpression in primary hypothalamic astrocytes. Together, we demonstrated here that chronic arsenic exposure caused metabolic disorders by impairing SOX2-modulated hypothalamic astrocytic process plasticity in mice. Our study provides evidence of novel central regulatory mechanisms underlying arsenic-induced metabolic disorders and emphasizes the crucial role of SOX2 in regulating the process plasticity of adult astrocytes.
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Affiliation(s)
- Zhixin He
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Yudong Xu
- Department of Environmental Medicine, School of Public Health, and Department of Emergency Medicine, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Qinlong Ma
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Chao Zhou
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China; Army 953 Hospital, Shigatse Branch of Xinqiao Hospital, Third Military Medical University, Shigatse 857099, China
| | - Lingling Yang
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Min Lin
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Ping Deng
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Zhiqi Yang
- Brain Research Center and State Key Laboratory of Trauma, Burns, and Combined Injury, Third Military Medical University, Chongqing 400038, China
| | - Mingyue Gong
- Brain Research Center and State Key Laboratory of Trauma, Burns, and Combined Injury, Third Military Medical University, Chongqing 400038, China
| | - Huijie Zhang
- School of Medicine, Guangxi University, Nanning 530004, Guangxi Zhuang Autonomous Region, China
| | - Muxue Lu
- School of Medicine, Guangxi University, Nanning 530004, Guangxi Zhuang Autonomous Region, China
| | - Yanqi Li
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Peng Gao
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Yonghui Lu
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Mindi He
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Lei Zhang
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Huifeng Pi
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Kuan Zhang
- Brain Research Center and State Key Laboratory of Trauma, Burns, and Combined Injury, Third Military Medical University, Chongqing 400038, China
| | - Song Qin
- Department of Anatomy, Histology and Embryology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zhengping Yu
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China
| | - Zhou Zhou
- Department of Environmental Medicine, School of Public Health, and Department of Emergency Medicine, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; Center for Neurointelligence, School of Medicine, Chongqing University, Chongqing 400030, China.
| | - Chunhai Chen
- Department of Occupational Health (Key Laboratory of Electromagnetic Radiation Protection, Ministry of Education), Third Military Medical University, Chongqing 400038, China.
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Khair A, Awal MA, Islam MS, Islam MZ, Rao DR. Potency of spirulina ( Spirulina platensis) on arsenic-induced lipid peroxidation in rat. J Adv Vet Anim Res 2021; 8:330-338. [PMID: 34395605 PMCID: PMC8280986 DOI: 10.5455/javar.2021.h519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 11/03/2022] Open
Abstract
Objective Natural substances found in dietary sources and medicinal plants have attracted considerable attention in recent years as chemopreventive agents. Spirulina is a blue-green alga that possesses chemopreventive properties. The purpose of this study was to determine the effect of spirulina on rats with inorganic arsenic (As) [sodium arsenite (NaAsO2)]-induced lipid peroxidation. Materials and Methods 120 rats were randomly assigned to 10 groups and designated T0, T1, T2, T3, T4, T5, T6, T7, T8, and T9. One group was kept as a control (T0) that received no treatment. The seven groups received 3.0 mg of NaAsO2/kg body weight in drinking water and were given spirulina ad libitum. T1 was treated with NaAsO2 but not with spirulina. Two groups of rats (T2 and T3), on the other hand, were treated with spirulina without receiving any As (NaAsO2). T2 received agro-based spirulina (Ab-Sp; grown in 1.5% soybean meal media and harvested on day 12 of seed inoculation) at 2.0 gm/kg feed, whereas T3 received commercially available spirulina (Com-Sp) at 2.0 gm/kg feed. T4, T5, and T6 were concurrently treated with Ab-Sp at 1.0, 1.5, and 2.0 gm/kg of feed. On the other hand, T7, T8, and T9 induced by NaAsO2 were concurrently treated with Com-Sp at 1.0, 1.5, and 2.0 gm/kg feed. All groups received treatment for 90 days. Results The efficacy of both spirulina in preventing lipid peroxidation caused by As was determined quantitatively by measuring the rats' serum malondialdehyde (MDA). The results indicated that As supplementation increased serum MDA levels, whereas both types of spirulina significantly decreased them. The highest dose of Ab-Sp (2.0 gm/kg feed) was found to be the most effective in preventing lipid peroxidation in rats treated with inorganic As. Conclusion Ab-Sp could be a natural, cost-effective, and safe measure to mitigate As toxicity.
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Affiliation(s)
- Abul Khair
- Department of Pharmacology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.,Department of Livestock Services, Quality Control Laboratory, Savar, Dhaka, Bangladesh
| | - Md Abdul Awal
- Department of Livestock Services, Quality Control Laboratory, Savar, Dhaka, Bangladesh
| | - Md Shafiqul Islam
- Department of Livestock Services, Quality Control Laboratory, Savar, Dhaka, Bangladesh
| | - Md Zahorul Islam
- Department of Livestock Services, Quality Control Laboratory, Savar, Dhaka, Bangladesh
| | - Damanna R Rao
- National Institute of Food and Agriculture-USDA, Washington DC, USA
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Al-Forkan M, Wali FB, Khaleda L, Alam MJ, Chowdhury RH, Datta A, Rahman MZ, Hosain N, Maruf MF, Chowdhury MAQ, Hasan NKMM, Shawon II, Raqib R. Association of arsenic-induced cardiovascular disease susceptibility with genetic polymorphisms. Sci Rep 2021; 11:6263. [PMID: 33737636 PMCID: PMC7973792 DOI: 10.1038/s41598-021-85780-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 03/03/2021] [Indexed: 12/17/2022] Open
Abstract
Inorganic arsenic (iAs) exposure has been reported to have an impact on cardiovascular diseases (CVD). However, there is not much known about the cardiac tissue injury of CVD patients in relation to iAs exposure and potential role of single nucleotide polymorphisms (SNPs) of genes related to iAs metabolism, oxidative stress, endothelial dysfunction and inflammation which may play important roles in such CVD cases. In this dual center cross-sectional study, based on the exclusion and inclusion criteria, we have recruited 50 patients out of 270, who came from known arsenic-affected and- unaffected areas of mainly Chittagong, Dhaka and Rajshahi divisions of Bangladesh and underwent open-heart surgery at the selected centers during July 2017 to June 2018. We found that the patients from arsenic affected areas contained significantly higher average iAs concentrations in their urine (6.72 ± 0.54 ppb, P = 0.028), nail (529.29 ± 38.76 ppb, P < 0.05) and cardiac tissue (4.83 ± 0.50 ppb, P < 0.05) samples. Patients' age, sex, BMI, hypertension and diabetes status adjusted analysis showed that patients from arsenic-affected areas had significantly higher iAs concentration in cardiac tissue (2.854, 95%CI 1.017-8.012, P = 0.046) reflecting higher cardiac tissue injury among them (1.831, 95%CI 1.032-3.249, P = 0.039), which in turn allowed the analysis to assume that the iAs exposure have played a vital role in patients' disease condition. Adjusted analysis showed significant association between urinary iAs concentration with AA (P = 0.012) and AG (P = 0.034) genotypes and cardiac iAs concentration with AA (P = 0.017) genotype of AS3MT rs10748835. The AG genotype of AS3MT rs10748835 (13.333 95%CI 1.280-138.845, P = 0.013), AA genotype of NOS3 rs3918181 (25.333 95%CI 2.065-310.757, P = 0.002), GG genotype of ICAM1 rs281432 (12.000 95%CI 1.325-108.674, P = 0.010) and AA genotype of SOD2 rs2758331 (13.333 95%CI 1.280-138.845, P = 0.013) were found significantly associated with CVD patients from arsenic-affected areas. Again, adjusted analysis showed significant association of AA genotype of AS3MT rs10748835 with CVD patients from arsenic affected areas. In comparison to the reference genotypes of the selected SNPs, AA of AS3MT 10748835, AG of NOS3 rs3918181 and AC of rs3918188, GG of ICAM1 rs281432, TT of VCAM1 rs3176867, AA of SOD2 rs2758331 and GT of APOE rs405509 significantly increased odds of cardiac tissue injury of CVD patients from arsenic affected areas. The results showed that the selected SNPs played a susceptibility role towards cardiac tissue iAs concentration and injury among CVD patients from iAs affected areas.
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Affiliation(s)
- Mohammad Al-Forkan
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh.
| | - Fahmida Binta Wali
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh.,Department of Biochemistry and Biotechnology, University of Science and Technology, Chittagong (USTC), Foy's Lake, Chittagong, 4202, Bangladesh
| | - Laila Khaleda
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Md Jibran Alam
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Rahee Hasan Chowdhury
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Amit Datta
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Md Zillur Rahman
- Department of Pathology, Chittagong Medical College, Chittagong, 4203, Bangladesh
| | - Nazmul Hosain
- Department of Cardiac Surgery, Chittagong Medical College Hospital, Chittagong, 4203, Bangladesh
| | - Mohammad Fazle Maruf
- Department of Cardiac Surgery, Chittagong Medical College Hospital, Chittagong, 4203, Bangladesh
| | | | - N K M Mirazul Hasan
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Injamamul Ismail Shawon
- Department of Genetic Engineering and Biotechnology, Faculty of Biological Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Rubhana Raqib
- Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Mohakhali, Dhaka, 1212, Bangladesh
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Akhtar E, Roy AK, Haq MA, von Ehrenstein OS, Ahmed S, Vahter M, Ekstrom EC, Kippler M, Wagatsuma Y, Raqib R. A longitudinal study of rural Bangladeshi children with long-term arsenic and cadmium exposures and biomarkers of cardiometabolic diseases. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116333. [PMID: 33535364 DOI: 10.1016/j.envpol.2020.116333] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/14/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
There is growing interest in understanding the contribution of environmental toxicant exposure in early life to development of cardiometabolic diseases (CMD) in adulthood. We aimed to assess associations of early life exposure to arsenic and cadmium with biomarkers of CMD in children in rural Bangladesh. From a longitudinal mother-child cohort in Matlab, Bangladesh, we followed up 540 pairs. Exposure to arsenic (U-As) and cadmium (U-Cd) was assessed by concentrations in urine from mothers at gestational week 8 (GW8) and children at ages 4.5 and 9 years. Blood pressure and anthropometric indices were measured at 4.5 and 9 years. Metabolic markers (lipids, glucose, hemoglobin A1c, adipokines, estimated glomerular filtration rate (eGFR) were determined in plasma/blood of 9 years old children. In linear regression models, adjusted for child sex, age, height-for-age z score (HAZ), BMI-for-age z score (BAZ), socioeconomic status (SES) and maternal education, each doubling of maternal and early childhood U-Cd was associated with 0.73 and 0.82 mmHg increase in systolic blood pressure (SBP) respectively. Both early and concurrent childhood U-Cd was associated with diastolic (D)BP (β = 0.80 at 4.5 years; β = 0.75 at 9 years). Each doubling of U-Cd at 9 years was associated with decrements of 4.98 mg/dL of total cholesterol (TC), 1.75 mg/dL high-density lipoprotein (HDL), 3.85 mg/dL low-density lipoprotein (LDL), 0.43 mg/dL glucose and 4.29 units eGFR. Each doubling of maternal U-Cd was associated with a decrement of 1.23 mg/dL HDL. Both maternal and childhood U-As were associated with decrement in TC and HDL. Multiple comparisons were checked with family-wise error rate Bonferroni-type-approach. The negative associations of arsenic and cadmium with biomarkers of CMD in preadolescent children indicated influence of both metal(loid)s on fat and carbohydrate metabolism, while cadmium additionally influenced kidney function and BP. Thus, fewer outcomes were associated with U-As compared to U-Cd at preadolescence.
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Affiliation(s)
- Evana Akhtar
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Anjan Kumar Roy
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Md Ahsanul Haq
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Ondine S von Ehrenstein
- Department of Community Health Sciences and Epidemiology, Fielding School of Public Health, University of California Los Angeles, USA
| | - Sultan Ahmed
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, SE- 171 77, Stockholm, Sweden
| | - Eva-Charlotte Ekstrom
- Department of Women's and Children's Health, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, SE- 171 77, Stockholm, Sweden
| | - Yukiko Wagatsuma
- Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Rubhana Raqib
- Infectious Diseases Division, icddr,b, Dhaka, 1212, Bangladesh.
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Zhao Y, Li M, Tian X, Xie J, Liu P, Ying X, Wang M, Yuan J, Gao Y, Tian F, Yan X. Effects of arsenic exposure on lipid metabolism: a systematic review and meta-analysis. Toxicol Mech Methods 2021; 31:188-196. [PMID: 33472496 DOI: 10.1080/15376516.2020.1864537] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Lipid metabolism dysfunction is a risk factor for cardiovascular diseases. Reportedly, arsenic exposure could affect lipid metabolism, but this finding remains controversial. Herein, we updated and reevaluated evidence regarding the relationship between arsenic exposure and lipid metabolism. Electronic and manual searches were performed to determine the effect of arsenic exposure on lipid metabolism from inception up to 30 November 2019. Overall, five studies were included in our meta-analysis. Two reviewers independently extracted information. Standardized mean difference (SMD) and 95% confidence intervals (CI) were used to analyze the combined effects of four indicators related to lipid metabolism (total cholesterol [TC], triglyceride [TG], high-density lipoprotein [HDL], low-density lipoprotein [LDL]). Afterwards, subgroup and sensitivity analyses were performed to explore the source of heterogeneity. Publication bias was tested using funnel plots and Begg's test. In this study, we observed that arsenic exposure can affect lipid metabolism by reducing serum HDL levels and increasing serum LDL levels. Following subgroup analysis, the arsenic concentration appeared to affect lipid metabolism. Funnel plot and Begg's test suggested no asymmetry. In conclusion, we recommend that potential influencing factors, including age, exposure time, and multiple concentration gradients, should be considered to further explore the relationship between arsenic exposure and lipid metabolism.
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Affiliation(s)
- Yannan Zhao
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Meng Li
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaolin Tian
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China.,Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - Jiaxin Xie
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Penghui Liu
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaodong Ying
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Meng Wang
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jiyu Yuan
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yi Gao
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Fengjie Tian
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaoyan Yan
- School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
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8
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Eick SM, Ferreccio C, Acevedo J, Castriota F, Cordero JF, Roh T, Smith AH, Smith MT, Steinmaus C. Socioeconomic status and the association between arsenic exposure and type 2 diabetes. ENVIRONMENTAL RESEARCH 2019; 172:578-585. [PMID: 30875511 PMCID: PMC7003534 DOI: 10.1016/j.envres.2019.03.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/22/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE Evaluate whether arsenic-related diabetes risks differ between people of low and high socioeconomic status (SES). METHODS We used data collected between October 2007-December 2010 from a population-based cancer case-control study (N = 1301) in Northern Chile, an area with high arsenic water concentrations (>800 µg/L) and comprehensive records of past exposure. Information on lifetime exposure and potential confounders were obtained using structured interviews, questionnaires, and residential histories. Type 2 diabetes was defined as physician-diagnosed diabetes or oral hypoglycemic medication use. SES was measured using a 14-point scale based on ownership of household appliances, cars, internet access, or use of domestic help. Logistic regression was used to assess the relationship between arsenic and diabetes within strata of SES. RESULTS Among those with low SES, the odds ratio (OR) for diabetes comparing individuals in the highest to lowest tertile of lifetime average arsenic exposure was 2.12 (95% confidence interval (CI) 1.29-3.49, p = 0.004). However, those in the high SES group were not at increased risk (OR = 1.12 [95% CI = 0.72-1.73]). CONCLUSIONS Our findings provide evidence that risks of arsenic-related diabetes may be higher in Chile in people with low versus high SES.
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Affiliation(s)
- Stephanie M Eick
- Department of Epidemiology and Biostatistics, University of Georgia College of Public Health, Athens, GA, United States
| | - Catterina Ferreccio
- Pontificia Universidad Católica de Chile, Santiago, Chile, Advanced Center for Chronic Diseases, ACCDiS, Chile
| | - Johanna Acevedo
- Pontificia Universidad Católica de Chile, Santiago, Chile, Advanced Center for Chronic Diseases, ACCDiS, Chile
| | - Felicia Castriota
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - José F Cordero
- Department of Epidemiology and Biostatistics, University of Georgia College of Public Health, Athens, GA, United States
| | - Taehyun Roh
- Arsenic Health Effects Research Program, School of Public Health, University of California, Berkeley, CA, United States
| | - Allan H Smith
- Arsenic Health Effects Research Program, School of Public Health, University of California, Berkeley, CA, United States
| | - Martyn T Smith
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Craig Steinmaus
- Arsenic Health Effects Research Program, School of Public Health, University of California, Berkeley, CA, United States; Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Oakland, CA, United States.
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9
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Ourshalimian S, Naser AM, Rahman M, Doza S, Stowell J, Narayan KMV, Shamsudduha M, Gribble MO. Arsenic and fasting blood glucose in the context of other drinking water chemicals: a cross-sectional study in Bangladesh. ENVIRONMENTAL RESEARCH 2019; 172:249-257. [PMID: 30818234 PMCID: PMC6744838 DOI: 10.1016/j.envres.2018.12.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 12/15/2018] [Accepted: 12/20/2018] [Indexed: 05/25/2023]
Abstract
GOAL The goal of this study was to evaluate the association between groundwater arsenic and fasting blood glucose in the context of other groundwater chemicals, in Bangladesh. METHODS Fasting blood glucose, gender, body mass index, sociodemographic variables, and diabetes medication use were measured among adults ≥ 35 years of age (n = 6587) participating in the Bangladesh Demographic and Health Survey (BDHS) 2011. Groundwater chemicals in 3534 well water samples were measured in the British Geological Survey (BGS) and Department of Public Health Engineering (DPHE) 1998-99 survey. We assigned the nearest BGS-DPHE well's chemical exposure to each BDHS participant. We used survey-estimation linear regression methods to model natural log-transformed fasting blood glucose, among those using groundwater as their primary drinking-water source, as a function of groundwater arsenic. We considered possible interactions between categorical arsenic exposure and each of 14 other groundwater chemicals dichotomized at their medians. The chemicals considered as possible effect modifiers included: aluminum, barium, calcium, iron, potassium, lithium, magnesium, manganese, sodium, phosphorous, silicon, sulfate, strontium, and zinc. RESULTS Compared to persons exposed to groundwater arsenic ≤ 10 μg/L, the adjusted geometric mean ratio (GMR) of fasting blood glucose was 1.01 (95% confidence interval: 0.98, 1.04) for individuals exposed to groundwater arsenic concentrations > 10 μg/L and ≤ 50 μg/L, and was 1.01 (0.97, 1.03) for those with > 50 μg/L arsenic. There were no Bonferroni-significant interactions with other chemicals, after accounting for the large number of chemicals tested as modifiers. CONCLUSIONS In our analysis of groundwater chemistry data from 1998/99 and fasting blood glucose outcomes measured in nearby populations approximately a decade later, there was no overall association of fasting blood glucose with nearby historical groundwater arsenic. This null association was not significantly modified by the historical levels of other groundwater chemicals. These null results are inconclusive regarding shorter-term potential toxicity of arsenic for glucose regulation, if there are differences between the historical concentrations measured in nearby groundwater and the actual drinking water chemical exposures in the population during the etiologically relevant period for more acute phenotypes like fasting blood glucose. Drinking water supply-relevant, longitudinal exposure assessment with less measurement error is needed to more precisely evaluate the joint impacts of drinking water chemicals and establish if there is a sensitive time window for glycemic outcomes.
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Affiliation(s)
| | - Abu Mohd Naser
- Department of Environmental Health, Emory University, Atlanta, GA, USA
| | - Mahbubur Rahman
- International Centre for Diarrhoeal Disease Research, Bangladesh, GPO Box 128, Dhaka 1000, Bangladesh
| | - Solaiman Doza
- International Centre for Diarrhoeal Disease Research, Bangladesh, GPO Box 128, Dhaka 1000, Bangladesh
| | - Jennifer Stowell
- Department of Environmental Health, Emory University, Atlanta, GA, USA
| | - K M Venkat Narayan
- Emory Global Diabetes Research Center, Hubert Department of Global Health, Emory University, Atlanta, GA, USA
| | - Mohammad Shamsudduha
- Institute for Risk and Disaster Reduction, University College London, London, UK
| | - Matthew O Gribble
- Department of Environmental Health, Emory University, Atlanta, GA, USA; Department of Epidemiology, Emory University, Atlanta, GA, USA.
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Xiang S, Jin Q, Xu F, Yao Y, Liang W, Zuo X, Ye T, Ying C. High serum arsenic and cardiovascular risk factors in patients undergoing continuous ambulatory peritoneal dialysis. J Trace Elem Med Biol 2019; 52:1-5. [PMID: 30732868 DOI: 10.1016/j.jtemb.2018.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 09/13/2018] [Accepted: 11/01/2018] [Indexed: 12/12/2022]
Abstract
The present study aims to assess arsenic accumulation and explore its association with renal function and biomarkers of CVD risk in chronic kidney disease patients receiving continuous ambulatory peritoneal dialysis (CAPD). The serum was collected from 87 CAPD patients and 26 healthy subjects between 2015 and 2016. The arsenic concentration was measured by inductively coupled plasma mass spectrometer. Clinical variables related to CVD risk were determined with automatic biochemical analyzer. Serum arsenic was higher in CAPD patients as compared to healthy volunteers. Moreover, significant differences of BMI, serum phosphorus, eGFR and Ccr were observed among groups. Positive correlation between serum arsenic and serum phosphorus was found (r = 0.453, p < 0.001). While serum arsenic was negatively associated with Ccr (r = -0.328, p = 0.002) and eGFR (r = -0.248, p = 0.020). The logistic regression models revealed that high serum arsenic was related to hyperphosphatemia (ORs, 1.827; 95%CI, 1.145-2.913) after adjusted for the potential confounding factors. Overall, our findings inferred the accumulation of arsenic in CAPD patients. In addition, high serum arsenic was independently associated with the occurrence of hyperphosphatemia, which was a special and ubiquitous CVD risk factor in CAPD patients. This study provided a clue for the association between arsenic and CVD burden in CKD patients. At the same time, it suggested that prevention of arsenic accumulation should be taken into consideration clinically.
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Affiliation(s)
- Siyun Xiang
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Qiman Jin
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Fangyi Xu
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Ying Yao
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China; Department of Nephrology, Tongji Hospital, Huazhong University of Science and Technology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Wangqun Liang
- Department of Nephrology, Tongji Hospital, Huazhong University of Science and Technology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Xuezhi Zuo
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Ting Ye
- Department of Clinical Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Chenjiang Ying
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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Kuo CC, Su PH, Sun CW, Liu HJ, Chang CL, Wang SL. Early-life arsenic exposure promotes atherogenic lipid metabolism in adolescence: A 15-year birth cohort follow-up study in central Taiwan. ENVIRONMENT INTERNATIONAL 2018; 118:97-105. [PMID: 29859944 DOI: 10.1016/j.envint.2018.05.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Inorganic arsenic (iAs) exposure potentially causes diabetes and cardiovascular diseases in adults. However, its effect on glucose and lipid metabolism in early life remains unknown. OBJECTIVE We evaluated the associations between early-life arsenic exposure and profiles of glucose and lipids in a 15-year birth cohort in central Taiwan. METHODS We studied 237 adolescents through 5 waves of follow-up interviews and examinations at ages of approximately 2, 5, 8, 11, and 14 y. We obtained at least one follow-up urine measurement for arsenic species and blood sample collection up to 14 y of age and identified group-based trajectories of serial iAs by semiparametric mixture modeling. Multiple linear and logistic regressions were performed to assess the effect of the arsenic exposure trajectory on serum fasting glucose, total cholesterol (TCHO), triglycerides (TGs), low-density lipoprotein cholesterol (LDL), and high-density lipoprotein cholesterol (HDL). RESULTS Three trajectories of postnatal arsenic exposure were identified, namely stable-low (31.4%), stable-high (48.2%), and rising-high (20.4%) groups. Compared with the stable-low trajectory group, the percent changes in TCHO and LDL was 14% (95% confidence interval 4-24%) and 23% (9-38%) for the group with "rising-high" trajectory and was 8% (-1-16%) and 16% (4-29%) for the group with "stable-high" trajectory. The rising-high group was also associated with an increase in the TCHO/HDL ratio by 14% (95% CI 3%-25%). The adjusted odds ratios of high developmental trajectories of TCHO, TG, LDL, and non-HDL levels were 4.0 (95% CI 1.2-13.7), 12.2 (2.2-67), 7.3 (1.8-30), and 3.6 (0.9-14.6), respectively, in the rising-high group (reference: stable-low group). CONCLUSION Our findings suggest that conversion to an atherogenic lipid profile in adolescents may be associated with early-life exposure to environmental arsenic, particularly during the pre-adolescent period. An environmental modification approach for preventing As-related cardiovascular disease is recommended to begin early in life.
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Affiliation(s)
- Chin-Chi Kuo
- Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan; Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Pen-Hua Su
- Department of Pediatrics, Chung Shan Medical University, Taichung, Taiwan
| | - Chien-Wen Sun
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan
| | - Huei-Ju Liu
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan
| | - Chaw-Liang Chang
- Department of Pediatrics, Cathay General Hospital, Hsinchu, Taiwan; Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
| | - Shu-Li Wang
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan; School of Public Health, National Defense Medical Center, Taipei, Taiwan; Department of Safety, Health, and Environmental Engineering, National United University, Miaoli, Taiwan; Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Ameliorating effects of Raphanus sativus leaves on sodium arsenite-induced perturbation of blood indices in Swiss albino mice. Asian Pac J Trop Biomed 2017. [DOI: 10.1016/j.apjtb.2017.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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13
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Evaluation of aortic elasticity parameters in arsenic exposed workers. J Hum Hypertens 2016; 30:709-713. [DOI: 10.1038/jhh.2015.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 12/02/2015] [Accepted: 12/08/2015] [Indexed: 12/11/2022]
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14
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Sayed M, Gofur M, Khair A, Awal M. Protective Role of Spirulina and Vitamin E against Arsenic Toxicity in Rats. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/ajas.2015.330.340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Sung TC, Huang JW, Guo HR. Association between Arsenic Exposure and Diabetes: A Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2015; 2015:368087. [PMID: 26000288 PMCID: PMC4427062 DOI: 10.1155/2015/368087] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 08/20/2014] [Indexed: 12/21/2022]
Abstract
Studies on the association between arsenic exposure and diabetes mellitus (DM) yielded inconsistent results. Epidemiologic data on the associations between arsenic exposures via inhalation and DM are limited. Therefore, we conducted a meta-analysis to evaluate the risk of DM associated with arsenic exposure. We searched the related literature through a systematic approach and analyzed the data according to the exposure route (inhalation and ingestion). We used random-effect models to estimate the summary relative risks (RRs) for DM associated with arsenic exposure and used I (2) statistics to assess the heterogeneity of studies. We identified 38 relevant studies, of which the 32 on the ingestion route showed a significant association between arsenic exposure and DM (RR = 1.57; 95% CI 1.27-1.93). Focusing on the 24 studies in which the diagnosis of DM was confirmed using laboratory tests or medical records, we found that the summary RR was 1.71 (95% CI 1.32-2.23), very close to the overall estimates. We concluded that ingested arsenic is associated with the development of DM, but the heterogeneity among the studies may affect the results.
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Affiliation(s)
- Tzu-Ching Sung
- Department of Health Care Management, University of Kang Ning, 188 Anjhong Road, Section 5, Tainan 70970, Taiwan
- Center for Occupational and Environmental Health and Preventive Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70428, Taiwan
| | - Jhih-Wei Huang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70428, Taiwan
| | - How-Ran Guo
- Center for Occupational and Environmental Health and Preventive Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70428, Taiwan
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70428, Taiwan
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, 138 Sheng-Li Road, Tainan 70428, Taiwan
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Sheikh A, Yeasmin F, Agarwal S, Rahman M, Islam K, Hossain E, Hossain S, Karim MR, Nikkon F, Saud ZA, Hossain K. Protective effects of Moringa oleifera Lam. leaves against arsenic-induced toxicity in mice. Asian Pac J Trop Biomed 2014; 4:S353-8. [PMID: 25183111 DOI: 10.12980/apjtb.4.201414b44] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/08/2014] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVE To evaluate the protective role of leaves of Moringa oleifera (M. oleifera) Lam. against arsenic-induced toxicity in mice. METHODS Swiss albino male mice were divided into four groups. The first group was used as non-treated control group while, the second, third, and fourth groups were treated with M. oleifera leaves (50 mg/kg body weight per day), sodium arsenite (10 mg/kg body weight per day) and sodium arsenite plus M. oleifera leaves, respectively. Serum indices related to cardiac, liver and renal functions were analyzed to evaluate the protective effect of Moringa leaves on arsenic-induced effects in mice. RESULTS It revealed that food supplementation of M. oleifera leaves abrogated the arsenic-induced elevation of triglyceride, glucose, urea and the activities of alkaline phospatase, aspartate aminotransferase and alanine aminotransferase in serum. M. oleifera leaves also prevented the arsenic-induced perturbation of serum butyryl cholinesterase activity, total cholesterol and high density lipoprotein cholesterol. CONCLUSIONS The results indicate that the leaves of M. oleifera may be useful in reducing the effects of arsenic-induced toxicity.
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Affiliation(s)
- Afzal Sheikh
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Fouzia Yeasmin
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Smita Agarwal
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Mashiur Rahman
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Khairul Islam
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Ekhtear Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Shakhawoat Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Md Rezaul Karim
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Farjana Nikkon
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Zahangir Alam Saud
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
| | - Khaled Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi-6205, Bangladesh
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High fat diet aggravates arsenic induced oxidative stress in rat heart and liver. Food Chem Toxicol 2014; 66:262-77. [DOI: 10.1016/j.fct.2014.01.050] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 01/24/2014] [Accepted: 01/28/2014] [Indexed: 01/15/2023]
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18
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Wu F, Molinaro P, Chen Y. Arsenic Exposure and Subclinical Endpoints of Cardiovascular Diseases. Curr Environ Health Rep 2014; 1:148-162. [PMID: 25013752 DOI: 10.1007/s40572-014-0011-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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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Bae HS, Ryu DY, Choi BS, Park JD. Urinary Arsenic Concentrations and their Associated Factors in Korean Adults. Toxicol Res 2013; 29:137-42. [PMID: 24278640 PMCID: PMC3834445 DOI: 10.5487/tr.2013.29.2.137] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 06/27/2013] [Accepted: 06/28/2013] [Indexed: 11/22/2022] Open
Abstract
Arsenic (As) is a well-known human carcinogen and its dietary exposure has been found to be the major route of entry into general population. This study was performed to assess the body levels of As and their associated factors in Korean adults by analyzing total As in urine. Urine and blood samples were collected from 580 adults aged 20 years and older, who had not been exposed to As occupationally. Demographic information was collected with the help of a standard questionnaire, including age, smoking, alcohol intake, job profiles, and diet consumed in the last 24 hrs of the study. Total As, sum of As(III), As(V), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), in urine was determined using atomic absorption spectrometer involving hydride generation method. The geometric mean concentration of total As in urine was 7.10 μg/L. Urine As was significantly higher in men (7.63 μg/L) than in women (6.75 μg/ L). Age, smoking, alcohol consumption, and job profiles of study subjects did not significantly affect the concentration of As in urine. No significant relationship was observed between body mass index (BMI), Fe, and total cholesterol in serum and urinary As. Urine As level was positively correlated with seaweeds, fishes & shellfishes, and grain intake. A negative correlation between urinary As level and HDL-cholesterol in serum and meat intake was observed. Overall, these results suggest that urinary As concentration could be affected by seafood consumption. Therefore, people who frequently consume seafood and grain need to be monitored for chronic dietary As exposure.
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Affiliation(s)
- Hye-Sun Bae
- Department of Preventive Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
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20
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Maull EA, Ahsan H, Edwards J, Longnecker MP, Navas-Acien A, Pi J, Silbergeld EK, Styblo M, Tseng CH, Thayer KA, Loomis D. Evaluation of the association between arsenic and diabetes: a National Toxicology Program workshop review. ENVIRONMENTAL HEALTH PERSPECTIVES 2012; 120:1658-70. [PMID: 22889723 PMCID: PMC3548281 DOI: 10.1289/ehp.1104579] [Citation(s) in RCA: 261] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 08/10/2012] [Indexed: 05/17/2023]
Abstract
BACKGROUND Diabetes affects an estimated 346 million persons globally, and total deaths from diabetes are projected to increase > 50% in the next decade. Understanding the role of environmental chemicals in the development or progression of diabetes is an emerging issue in environmental health. In 2011, the National Toxicology Program (NTP) organized a workshop to assess the literature for evidence of associations between certain chemicals, including inorganic arsenic, and diabetes and/or obesity to help develop a focused research agenda. This review is derived from discussions at that workshop. OBJECTIVES Our objectives were to assess the consistency, strength/weaknesses, and biological plausibility of findings in the scientific literature regarding arsenic and diabetes and to identify data gaps and areas for future evaluation or research. The extent of the existing literature was insufficient to consider obesity as an outcome. DATA SOURCES, EXTRACTION, AND SYNTHESIS Studies related to arsenic and diabetes or obesity were identified through PubMed and supplemented with relevant studies identified by reviewing the reference lists in the primary literature or review articles. CONCLUSIONS Existing human data provide limited to sufficient support for an association between arsenic and diabetes in populations with relatively high exposure levels (≥ 150 µg arsenic/L in drinking water). The evidence is insufficient to conclude that arsenic is associated with diabetes in lower exposure (< 150 µg arsenic/L drinking water), although recent studies with better measures of outcome and exposure support an association. The animal literature as a whole was inconclusive; however, studies using better measures of diabetes-relevant end points support a link between arsenic and diabetes.
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Affiliation(s)
- Elizabeth A Maull
- Biomolecular Screening Branch, Division of the National Toxicology Program, National Institute of Environmental Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
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Yang B, Fu J, Zheng H, Xue P, Yarborough K, Woods CG, Hou Y, Zhang Q, Andersen ME, Pi J. Deficiency in the nuclear factor E2-related factor 2 renders pancreatic β-cells vulnerable to arsenic-induced cell damage. Toxicol Appl Pharmacol 2012; 264:315-23. [PMID: 23000044 DOI: 10.1016/j.taap.2012.09.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 09/10/2012] [Accepted: 09/13/2012] [Indexed: 01/10/2023]
Abstract
Chronic human exposure to inorganic arsenic (iAs), a potent environmental oxidative stressor, is associated with increased prevalence of type 2 diabetes, where impairment of pancreatic β-cell function is a key pathogenic factor. Nuclear factor E2-related factor 2 (Nrf2) is a central transcription factor regulating cellular adaptive response to oxidative stress. However, persistent activation of Nrf2 in response to chronic oxidative stress, including inorganic arsenite (iAs³⁺) exposure, blunts glucose-triggered reactive oxygen species (ROS) signaling and impairs glucose-stimulated insulin secretion (GSIS). In the current study, we found that MIN6 pancreatic β-cells with stable knockdown of Nrf2 (Nrf2-KD) by lentiviral shRNA and pancreatic islets isolated from Nrf2-knockout (Nrf2⁻/⁻) mice exhibited reduced expression of several antioxidant and detoxification enzymes in response to acute iAs³⁺ exposure. As a result, Nrf2-KD MIN6 cells and Nrf2⁻/⁻ islets were more susceptible to iAs³⁺ and monomethylarsonous acid (MMA³⁺)-induced cell damage, as measured by decreased cell viability, augmented apoptosis and morphological change. Pretreatment of MIN6 cells with Nrf2 activator tert-butylhydroquinone protected the cells from iAs³⁺-induced cell damage in an Nrf2-dependent fashion. In contrast, antioxidant N-acetyl cysteine protected Nrf2-KD MIN6 cells against acute cytotoxicity of iAs³⁺. The present study demonstrates that Nrf2-mediated antioxidant response is critical in the pancreatic β-cell defense mechanism against acute cytotoxicity by arsenic. The findings here, combined with our previous results on the inhibitory effect of antioxidants on ROS signaling and GSIS, suggest that Nrf2 plays paradoxical roles in pancreatic β-cell dysfunction induced by environmental arsenic exposure.
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Affiliation(s)
- Bei Yang
- Institute for Chemical Safety Sciences, The Hamner Institutes for Health Sciences, 6 Davis Drive, Research Triangle Park, NC 27709, USA
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Yokoi K, Konomi A. Toxicity of so-called edible hijiki seaweed (Sargassum fusiforme) containing inorganic arsenic. Regul Toxicol Pharmacol 2012; 63:291-7. [PMID: 22561181 DOI: 10.1016/j.yrtph.2012.04.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 04/08/2012] [Accepted: 04/21/2012] [Indexed: 01/28/2023]
Abstract
The UK Food Standards Agency and its counterparts in other countries have warned consumers not to eat hijiki (Sargassum fusiforme; synonym Hizikia fusiformis), a Sargasso seaweed, because it contains large amounts of inorganic arsenic. We investigated dietary exposure of hijiki in weaning male F344/N rats fed an AIN-93G diet supplemented with 3% (w/w) hijiki powder for 7 weeks, compared with those fed only an AIN-93G diet. Body weight, body temperature, blood and tissue arsenic concentrations, plasma biochemistry and hematological parameters were measured. We found that feeding rats a 3% hijiki diet led to a marked accumulation of arsenic in blood and tissues, and evoked a high body temperature and abnormal blood biochemistry including elevated plasma alkaline phosphatase activity and inorganic phosphorus, consistent with arsenic poisoning. These findings should prompt further investigations to identify the health hazards related to consumption of hijiki and related Sargassum species in humans.
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Affiliation(s)
- Katsuhiko Yokoi
- Department of Human Nutrition, Seioku University Graduate School, Matsudo, Chiba 271-8555, Japan.
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Chen JW, Wang SL, Wang YH, Sun CW, Huang YL, Chen CJ, Li WF. Arsenic methylation, GSTO1 polymorphisms, and metabolic syndrome in an arseniasis endemic area of southwestern Taiwan. CHEMOSPHERE 2012; 88:432-8. [PMID: 22440634 DOI: 10.1016/j.chemosphere.2012.02.059] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 02/05/2012] [Accepted: 02/17/2012] [Indexed: 05/03/2023]
Abstract
Previous studies have shown that hair arsenic (As) levels are associated with an increased prevalence of metabolic syndrome (MetS), which is a strong predictor for type 2 diabetes. The objective of this study was to evaluate whether urinary arsenic methylation is related to MetS in an arseniasis endemic area of southwestern Taiwan, taking genetic factors into account. Subjects were from a community-based cohort recruited in 1990 from three villages in Putai Township. In 2002-2003, we successfully followed 247 subjects and measured their urinary arsenic species including inorganic arsenic, monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA), as well as the coding region polymorphisms of three genes known to involve in arsenic methylation. Results showed that subjects of MetS had a history of consuming well water of higher arsenic concentration as compared to those without MetS. We also found a significant association between urinary arsenic species and risk for MetS, where the odds ratio of MetS was increased with decreasing proportion of MMA and low rate of primary methylation (defined as MMA/inorganic As). The increased risk associated with low primary methylation rate was further modified by the GSTO1 A140D polymorphism, with the D allele carriers showing a slightly higher risk for MetS. Our results suggest that a low MMA% is associated with increased risk for MetS among As-exposed subjects and the genetic polymorphism of GSTO1, an enzyme responsible for the reduction of pentavalent arsenic species, may also play a modest modification role.
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Affiliation(s)
- Jein-Wen Chen
- Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Taiwan
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Thayer KA, Heindel JJ, Bucher JR, Gallo MA. Role of environmental chemicals in diabetes and obesity: a National Toxicology Program workshop review. ENVIRONMENTAL HEALTH PERSPECTIVES 2012; 120:779-89. [PMID: 22296744 PMCID: PMC3385443 DOI: 10.1289/ehp.1104597] [Citation(s) in RCA: 452] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Accepted: 02/01/2012] [Indexed: 05/17/2023]
Abstract
BACKGROUND There has been increasing interest in the concept that exposures to environmental chemicals may be contributing factors to the epidemics of diabetes and obesity. On 11-13 January 2011, the National Institute of Environmental Health Sciences (NIEHS) Division of the National Toxicology Program (NTP) organized a workshop to evaluate the current state of the science on these topics of increasing public health concern. OBJECTIVE The main objective of the workshop was to develop recommendations for a research agenda after completing a critical analysis of the literature for humans and experimental animals exposed to certain environmental chemicals. The environmental exposures considered at the workshop were arsenic, persistent organic pollutants, maternal smoking/nicotine, organotins, phthalates, bisphenol A, and pesticides. High-throughput screening data from Toxicology in the 21st Century (Tox21) were also considered as a way to evaluate potential cellular pathways and generate -hypotheses for testing which and how certain chemicals might perturb biological processes related to diabetes and obesity. CONCLUSIONS Overall, the review of the existing literature identified linkages between several of the environmental exposures and type 2 diabetes. There was also support for the "developmental obesogen" hypothesis, which suggests that chemical exposures may increase the risk of obesity by altering the differentiation of adipocytes or the development of neural circuits that regulate feeding behavior. The effects may be most apparent when the developmental exposure is combined with consumption of a high-calorie, high-carbohydrate, or high-fat diet later in life. Research on environmental chemical exposures and type 1 diabetes was very limited. This lack of research was considered a critical data gap. In this workshop review, we outline the major themes that emerged from the workshop and discuss activities that NIEHS/NTP is undertaking to address research recommendations. This review also serves as an introduction to an upcoming series of articles that review the literature regarding specific exposures and outcomes in more detail.
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Affiliation(s)
- Kristina A Thayer
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA.
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Islam LN, Zahid MSH, Nabi AHMN, Hossain M. Function of serum complement in drinking water arsenic toxicity. J Toxicol 2012; 2012:302817. [PMID: 22545044 PMCID: PMC3321581 DOI: 10.1155/2012/302817] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/05/2012] [Accepted: 01/09/2012] [Indexed: 11/17/2022] Open
Abstract
Serum complement function was evaluated in 125 affected subjects suffering from drinking water arsenic toxicity. Their mean duration of exposure was 7.4 ± 5.3 yrs, and the levels of arsenic in drinking water and urine samples were 216 ± 211 and 223 ± 302 μg/L, respectively. The mean bactericidal activity of complement from the arsenic patients was 92% and that in the unexposed controls was 99% (P < 0.01), but heat-inactivated serum showed slightly elevated activity than in controls. In patients, the mean complement C3 was 1.56 g/L, and C4 was 0.29 g/L compared to 1.68 g/L and 0.25 g/L, respectively, in the controls. The mean IgG in the arsenic patients was 24.3 g/L that was highly significantly elevated (P < 0.001). Arsenic patients showed a significant direct correlation between C3 and bactericidal activity (P = 0.014). Elevated levels of C4 indicated underutilization and possibly impaired activity of the classical complement pathway. We conclude reduced function of serum complement in drinking water arsenic toxicity.
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Affiliation(s)
- Laila N. Islam
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka 1000, Bangladesh
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Islam K, Haque A, Karim R, Fajol A, Hossain E, Salam KA, Ali N, Saud ZA, Rahman M, Rahman M, Karim R, Sultana P, Hossain M, Akhand AA, Mandal A, Miyataka H, Himeno S, Hossain K. Dose-response relationship between arsenic exposure and the serum enzymes for liver function tests in the individuals exposed to arsenic: a cross sectional study in Bangladesh. Environ Health 2011; 10:64. [PMID: 21740555 PMCID: PMC3146918 DOI: 10.1186/1476-069x-10-64] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 07/08/2011] [Indexed: 05/05/2023]
Abstract
BACKGROUND Chronic arsenic exposure has been shown to cause liver damage. However, serum hepatic enzyme activity as recognized on liver function tests (LFTs) showing a dose-response relationship with arsenic exposure has not yet been clearly documented. The aim of our study was to investigate the dose-response relationship between arsenic exposure and major serum enzyme marker activity associated with LFTs in the population living in arsenic-endemic areas in Bangladesh. METHODS A total of 200 residents living in arsenic-endemic areas in Bangladesh were selected as study subjects. Arsenic concentrations in the drinking water, hair and nails were measured by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS). The study subjects were stratified into quartile groups as follows, based on concentrations of arsenic in the drinking water, as well as in subjects' hair and nails: lowest, low, medium and high. The serum hepatic enzyme activities of alkaline phosphatase (ALP), aspartate transaminase (AST) and alanine transaminase (ALT) were then assayed. RESULTS Arsenic concentrations in the subjects' hair and nails were positively correlated with arsenic levels in the drinking water. As regards the exposure-response relationship with arsenic in the drinking water, the respective activities of ALP, AST and ALT were found to be significantly increased in the high-exposure groups compared to the lowest-exposure groups before and after adjustments were made for different covariates. With internal exposure markers (arsenic in hair and nails), the ALP, AST and ALT activity profiles assumed a similar shape of dose-response relationship, with very few differences seen in the higher groups compared to the lowest group, most likely due to the temporalities of exposure metrics. CONCLUSIONS The present study demonstrated that arsenic concentrations in the drinking water were strongly correlated with arsenic concentrations in the subjects' hair and nails. Further, this study revealed a novel exposure- and dose- response relationship between arsenic exposure metrics and serum hepatic enzyme activity. Elevated serum hepatic enzyme activities in the higher exposure gradients provided new insights into arsenic-induced liver toxicity that might be helpful for the early prognosis of arsenic-induced liver diseases.
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Affiliation(s)
- Khairul Islam
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Abedul Haque
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Rezaul Karim
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
- Department of Applied Nutrition and Food Technology, Islamic University, Kushtia-7003, Bangladesh
| | - Abul Fajol
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Ekhtear Hossain
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Kazi Abdus Salam
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Nurshad Ali
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Zahangir Alam Saud
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Matiar Rahman
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Mashiur Rahman
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
| | | | - Papia Sultana
- Department of Statistics, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Mostaque Hossain
- Department of Medicine, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Dhaka, Bangladesh
| | - Anwarul Azim Akhand
- Department of Genetic Engineering and Biotechnology, Dhaka University, Dhaka-1000, Bangladesh
| | - Abul Mandal
- System Biology Research Center, University of Skövde, P. O. Box 408, SE-541-28 Skövde, Sweden
| | - Hideki Miyataka
- Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
| | - Seiichiro Himeno
- Laboratory of Molecular Nutrition and Toxicology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
| | - Khaled Hossain
- Department of Biochemistry and Molecular Biology, Rajshahi University, Rajshahi-6205, Bangladesh
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Huang CF, Chen YW, Yang CY, Tsai KS, Yang RS, Liu SH. Arsenic and diabetes: current perspectives. Kaohsiung J Med Sci 2011; 27:402-10. [PMID: 21914528 DOI: 10.1016/j.kjms.2011.05.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 03/24/2011] [Indexed: 01/19/2023] Open
Abstract
Arsenic is a naturally occurring toxic metalloid of global concern. Many studies have indicated a dose-response relationship between accumulative arsenic exposure and the prevalence of diabetes mellitus (DM) in arseniasis-endemic areas in Taiwan and Bangladesh, where arsenic exposure occurs through drinking water. Epidemiological researches have suggested that the characteristics of arsenic-induced DM observed in arseniasis-endemic areas in Taiwan and Mexico are similar to those of non-insulin-dependent DM (Type 2 DM). These studies analyzed the association between high and chronic exposure to inorganic arsenic in drinking water and the development of DM, but the effect of exposure to low to moderate levels of inorganic arsenic on the risk of DM is unclear. Navas-Acien et al. recently proposed that a positive association existed between total urine arsenic and the prevalence of Type 2 DM in people exposed to low to moderate levels of arsenic. However, the diabetogenic role played by arsenic is still debated upon. An increase in the prevalence of DM has been observed among residents of highly arsenic-contaminated areas, whereas the findings from community-based and occupational studies in low-arsenic-exposure areas have been inconsistent. Recently, a population-based cross-sectional study showed that the current findings did not support an association between arsenic exposure from drinking water at levels less than 300 μg/L and a significantly increased risk of DM. Moreover, although the precise mechanisms for the arsenic-induced diabetogenic effect are still largely undefined, recent in vitro experimental studies indicated that inorganic arsenic or its metabolites impair insulin-dependent glucose uptake or glucose-stimulated insulin secretion. Nevertheless, the dose, the form of arsenic used, and the experimental duration in the in vivo studies varied greatly, leading to conflicting results and ambiguous interpretation of these data with respect to human exposure to arsenic in the environment. Moreover, the experimental studies were limited to the use of arsenic concentrations much higher than those relevant to human exposure. Further prospective epidemiological studies might help to clarify this controversy. The issues about environmental exposure assessment and appropriate biomarkers should also be considered. Here, we focus on the review of mechanism studies and discuss the currently available evidence and conditions for the association between environmental arsenic exposure and the development of DM.
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Affiliation(s)
- Chun Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
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Rubatto Birri PN, Pérez RD, Cremonezzi D, Pérez CA, Rubio M, Bongiovanni GA. Association between As and Cu renal cortex accumulation and physiological and histological alterations after chronic arsenic intake. ENVIRONMENTAL RESEARCH 2010; 110:417-423. [PMID: 20170908 DOI: 10.1016/j.envres.2009.09.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 08/24/2009] [Accepted: 09/08/2009] [Indexed: 05/28/2023]
Abstract
Arsenic (As) is one of the most abundant hazards in the environment and it is a human carcinogen. Related to excretory functions, the kidneys in humans, animal models or naturally exposed fauna, are target organs for As accumulation and deleterious effects. Previous studies carried out using X-ray fluorescence spectrometry by synchrotron radiation (SR-microXRF) showed a high concentration of As in the renal cortex of chronically exposed rats, suggesting that this is a suitable model for studies on renal As accumulation. This accumulation was accompanied by a significant increase in copper (Cu) concentration. The present study focused on the localization of these elements in the renal cortex and their correlation with physiological and histological As-related renal effects. Experiments were performed on nine male Wistar rats, divided into three experimental groups. Two groups received 100 microg/ml sodium arsenite in drinking water for 60 and 120 consecutive days, respectively. The control group received water without sodium arsenite (< 50 ppb As). For histological analysis, 5-mum-thick sections of kidneys were stained with hematoxylin and eosin. Biochemical analyses were used to determine concentrations of plasma urea and creatinine. The As and Cu mapping were carried out by SR-microXRF using a collimated white synchrotron spectrum (300 microm x 300 microm) on kidney slices (2 mm thick) showing As and Cu co-distribution in the renal cortex. Then, renal cortical slices (100 microm thick) were scanned with a focused white synchrotron spectrum (30 microm x 30 microm). Peri-glomerular accumulation of As and Cu at 60 and 120 days was found. The effects of 60 days of arsenic consumption were seen in a decreased Bowman's space as well as a decreased plasma blood urea nitrogen (BUN)/creatinine ratio. Major deleterious effects; however, were seen on tubules at 120 days of exposition. This study supports the hypothesis that tubular accumulation of As-Cu may have some bearing on the arsenic-associated nephrotoxicological process.
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Affiliation(s)
- Paolo N Rubatto Birri
- Instituto de Biología Celular, Facultad de Ciencias Médicas (FCM), Universidad Nacional de Córdoba (UNC), Ciudad Universitaria, Córdoba, Argentina
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Fu J, Woods CG, Yehuda-Shnaidman E, Zhang Q, Wong V, Collins S, Sun G, Andersen ME, Pi J. Low-level arsenic impairs glucose-stimulated insulin secretion in pancreatic beta cells: involvement of cellular adaptive response to oxidative stress. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:864-70. [PMID: 20100676 PMCID: PMC2898865 DOI: 10.1289/ehp.0901608] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Accepted: 01/25/2010] [Indexed: 05/02/2023]
Abstract
BACKGROUND Chronic exposure of humans to inorganic arsenic, a potent environmental oxidative stressor, is associated with incidence of type 2 diabetes (T2D). A key driver in the pathogenesis of T2D is impairment of pancreatic beta-cell function, with the hallmark of beta-cell function being glucose-stimulated insulin secretion (GSIS). Reactive oxygen species (ROS) derived from glucose metabolism serve as one of the metabolic signals for GSIS. Nuclear factor-erythroid 2-related factor 2 (Nrf2) is a central transcription factor regulating cellular adaptive response to oxidative stress. OBJECTIVES We tested the hypothesis that activation of Nrf2 and induction of antioxidant enzymes in response to arsenic exposure impedes glucose-triggered ROS signaling and thus GSIS. METHODS AND RESULTS Exposure of INS-1(832/13) cells to low levels of arsenite led to decreased GSIS in a dose- and time-dependent fashion. Consistent with our hypothesis, a significantly enhanced Nrf2 activity, determined by its nuclear accumulation and induction of its target genes, was observed in arsenite-exposed cells. In keeping with the activation of Nrf2-mediated antioxidant response, intracellular glutathione and intracellular hydrogen peroxide-scavenging activity was dose dependently increased by arsenite exposure. Although the basal cellular peroxide level was significantly enhanced, the net percentage increase in glucose-stimulated intracellular peroxide production was markedly inhibited in arsenite-exposed cells. In contrast, insulin synthesis and the consensus GSIS pathway, including glucose transport and metabolism, were not significantly reduced by arsenite exposure. CONCLUSIONS Our studies suggest that low levels of arsenic provoke a cellular adaptive oxidative stress response that increases antioxidant levels, dampens ROS signaling involved in GSIS, and thus disturbs beta-cell function.
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Affiliation(s)
- Jingqi Fu
- Division of Translational Biology, The Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA
- School of Public Health, China Medical University, Shenyang, China
| | | | - Einav Yehuda-Shnaidman
- Division of Translational Biology, The Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA
| | | | - Victoria Wong
- Flow Cytometry and Confocal Core, The Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA
| | - Sheila Collins
- Division of Translational Biology, The Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA
| | - Guifan Sun
- School of Public Health, China Medical University, Shenyang, China
| | | | - Jingbo Pi
- Division of Translational Biology, The Hamner Institutes for Health Sciences, Research Triangle Park, North Carolina, USA
- Address correspondence to J. Pi, Division of Translational Biology, The Hamner Institutes for Health Sciences, 6 Davis Dr., Research Triangle Park, NC 27709 USA. Telephone: (919) 558-1395. Fax: (919) 558-1305. E-mail:
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Low-level Population Exposure to Inorganic Arsenic in the United States and Diabetes Mellitus. Epidemiology 2009; 20:807-15. [DOI: 10.1097/ede.0b013e3181b0fd29] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fatmi Z, Azam I, Ahmed F, Kazi A, Gill AB, Kadir MM, Ahmed M, Ara N, Janjua NZ. Health burden of skin lesions at low arsenic exposure through groundwater in Pakistan. Is river the source? ENVIRONMENTAL RESEARCH 2009; 109:575-581. [PMID: 19419713 DOI: 10.1016/j.envres.2009.04.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Revised: 03/09/2009] [Accepted: 04/08/2009] [Indexed: 05/27/2023]
Abstract
A significant proportion of groundwater in south Asia is contaminated with arsenic. Pakistan has low levels of arsenic in groundwater compared with China, Bangladesh and India. A representative multi-stage cluster survey conducted among 3874 persons > or = 15 years of age to determine the prevalence of arsenic skin lesions, its relation with arsenic levels and cumulative arsenic dose in drinking water in a rural district (population: 1.82 million) in Pakistan. Spot-urine arsenic levels were compared among individuals with and without arsenic skin lesions. In addition, the relation of age, body mass index, smoking status with arsenic skin lesions was determined. The geographical distribution of the skin lesions and arsenic-contaminated wells in the district were ascertained using global positioning system. The total arsenic, inorganic and organic forms, in water and spot-urine samples were determined by atomic absorption spectrophotometry. The prevalence of skin lesions of arsenic was estimated for complex survey design, using surveyfreq and surveylogistic options of SAS 9.1 software.The prevalence of definitive cases i.e. hyperkeratosis of both palms and soles, was 3.4 per 1000 and suspected cases i.e. any sign of arsenic skin lesions (melanosis and/or keratosis), were 13.0 per 1000 among > or = 15-year-old persons in the district. Cumulative arsenic exposure (dose) was calculated from levels of arsenic in water and duration of use of current drinking water source. Prevalence of skin lesions increases with cumulative arsenic exposure (dose) in drinking water and arsenic levels in urine. Skin lesions were 2.5-fold among individuals with BMI <18.5 kg/m2. Geographically, more arsenic-contaminated wells and skin lesions were alongside Indus River, suggests a strong link between arsenic contamination of groundwater with proximity to river.This is the first reported epidemiological and clinical evidence of arsenic skin lesions due to groundwater in Pakistan. Further investigations and focal mitigation measures for arsenic may be carried out alongside Indus River.
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Affiliation(s)
- Zafar Fatmi
- Department of Community Health Sciences, Aga Khan University, Stadium Road, P.O. Box 3500, Karachi, Pakistan.
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Hays AM, Lantz RC, Rodgers LS, Sollome JJ, Vaillancourt RR, Andrew AS, Hamilton JW, Camenisch TD. Arsenic-induced decreases in the vascular matrix. Toxicol Pathol 2008; 36:805-17. [PMID: 18812580 DOI: 10.1177/0192623308323919] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Chronic ingestion of arsenic is associated with increased incidence of respiratory and cardiovascular diseases. To investigate the role of arsenic in early events in vascular pathology, C57BL/6 mice ingested drinking water with or without 50 ppb sodium arsenite (AsIII) for four, five, or eight weeks. At five and eight weeks, RNA from the lungs of control and AsIII-exposed animals was processed for microarray. Sixty-five genes were significantly and differentially expressed. Differential expression of extracellular matrix (ECM) gene transcripts was particularly compelling, as 91% of genes in this category, including elastin and collagen, were significantly decreased. In additional experiments, real-time RT-PCR showed an AsIII-induced decrease in many of these ECM gene transcripts in the heart and NIH3T3 fibroblast cells. Histological stains for collagen and elastin show a distinct disruption in the ECM surrounding small arteries in the heart and lung of AsIII-exposed mice. Immunohistochemical detection of alpha-smooth muscle actin in blood vessel walls was decreased in the AsIII-exposed animals. These data reveal a functional link between AsIII exposure and disruption in the vascular ECM. These AsIII-induced early pathological events may predispose humans to respiratory and cardiovascular diseases linked to chronic low-dose AsIII exposure.
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Affiliation(s)
- Allison M Hays
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721-0207, USA.
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