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Kaur G, Desai KP, Chang IY, Newman JD, Mathew RO, Bangalore S, Venditti FJ, Sidhu MS. A Clinical Perspective on Arsenic Exposure and Development of Atherosclerotic Cardiovascular Disease. Cardiovasc Drugs Ther 2023; 37:1167-1174. [PMID: 35029799 DOI: 10.1007/s10557-021-07313-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/29/2021] [Indexed: 11/03/2022]
Abstract
Cardiovascular risk has traditionally been defined by modifiable and non-modifiable risk factors, such as tobacco use, hyperlipidemia, and family history. However, chemicals and pollutants may also play a role in cardiovascular disease (CVD) risk. Arsenic is a naturally occurring element that is widely distributed in the Earth's crust. Inorganic arsenic (iAs) has been implicated in the pathogenesis of atherosclerosis, with chronic high-dose exposure to iAs (> 100 µg/L) being linked to CVD; however, whether low-to-moderate dose exposures of iAs (< 100 µg/L) are associated with the development of CVD is unclear. Due to limitations of the existing literature, it is difficult to define a threshold for iAs toxicity. Studies demonstrate that the effect of iAs on CVD is far more complex with influences from several factors, including diet, genetics, metabolism, and traditional risk factors such as hypertension and smoking. In this article, we review the existing data of low-to-moderate dose iAs exposure and its effect on CVD, along with highlighting the potential mechanisms of action.
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Affiliation(s)
- Gurleen Kaur
- Department of Internal Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Karan P Desai
- Division of Cardiovascular Medicine, University of Maryland, Baltimore, MD, USA
| | | | - Jonathan D Newman
- Division of Cardiology, New York University School of Medicine, New York, NY, USA
| | - Roy O Mathew
- Division of Nephrology, Loma Linda VA Health Care System, Loma Linda, CA, USA
| | - Sripal Bangalore
- Division of Cardiology, New York University School of Medicine, New York, NY, USA
| | - Ferdinand J Venditti
- Division of Cardiology, Department of Medicine, Albany Medical College and Albany Medical Center, Albany, NY, USA
| | - Mandeep S Sidhu
- Division of Cardiology, Department of Medicine, Albany Medical College and Albany Medical Center, Albany, NY, USA.
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2
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Liu Q, Lei Z. The Role of microRNAs in Arsenic-Induced Human Diseases: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37930083 DOI: 10.1021/acs.jafc.3c03721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
MicroRNAs (miRNAs) are noncoding RNAs with 20-22 nucleotides, which are encoded by endogenous genes and are capable of targeting the majority of human mRNAs. Arsenic is regarded as a human carcinogen, which can lead to many adverse health effects including diabetes, skin lesions, kidney disease, neurological impairment, male reproductive injury, and cardiovascular disease (CVD) such as cardiac arrhythmias, ischemic heart failure, and endothelial dysfunction. miRNAs can act as tumor suppressors and oncogenes via directly targeting oncogenes or tumor suppressors. Recently, miRNA dysregulation was considered to be an important mechanism of arsenic-induced human diseases and a potential biomarker to predict the diseases caused by arsenic exposure. Endogenic miRNAs such as miR-21, the miR-200 family, miR-155, and the let-7 family are involved in arsenic-induced human disease by inducing translational repression or RNA degradation and influencing multiple pathways, including mTOR/Arg 1, HIF-1α/VEGF, AKT, c-Myc, MAPK, Wnt, and PI3K pathways. Additionally, exogenous miRNAs derived from plants, such as miR-34a, miR-159, miR-2911, miR-159a, miR-156c, miR-168, etc., among others, can be transported from blood to specific tissue/organ systems in vivo. These exogenous miRNAs might be critical players in the treatment of human diseases by regulating host gene expression. This review summarizes the regulatory mechanisms of miRNAs in arsenic-induced human diseases, including cancers, CVD, and other human diseases. These special miRNAs could serve as potential biomarkers in the management and treatment of human diseases linked to arsenic exposure. Finally, the protective action of exogenous miRNAs, including antitumor, anti-inflammatory, anti-CVD, antioxidant stress, and antivirus are described.
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Affiliation(s)
- Qianying Liu
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhiqun Lei
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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3
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Yang X, Weber AA, Mennillo E, Secrest P, Chang M, Wong S, Le S, Liu J, Benner CW, Karin M, Gordts PL, Tukey RH, Chen S. Effects of Early Life Oral Arsenic Exposure on Intestinal Tract Development and Lipid Homeostasis in Neonatal Mice: Implications for NAFLD Development. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:97001. [PMID: 37668303 PMCID: PMC10478510 DOI: 10.1289/ehp12381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 05/01/2023] [Accepted: 07/11/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND Newborns can be exposed to inorganic arsenic (iAs) through contaminated drinking water, formula, and other infant foods. Epidemiological studies have demonstrated a positive association between urinary iAs levels and the risk of developing nonalcoholic fatty liver disease (NAFLD) among U.S. adolescents and adults. OBJECTIVES The present study examined how oral iAs administration to neonatal mice impacts the intestinal tract, which acts as an early mediator for NAFLD. METHODS Neonatal mice were treated with a single dose of iAs via oral gavage. Effects on the small intestine were determined by histological examination, RNA sequencing, and biochemical analysis. Serum lipid profiling was analyzed by fast protein liquid chromatography (FPLC), and hepatosteatosis was characterized histologically and biochemically. Liver X receptor-alpha (LXR α ) knockout (L x r α - / - ) mice and liver-specific activating transcription factor 4 (ATF4)-deficient (A t f 4 Δ H e p ) mice were used to define their roles in iAs-induced effects during the neonatal stage. RESULTS Neonatal mice exposed to iAs via oral gavage exhibited accumulation of dietary fat in enterocytes, with higher levels of enterocyte triglycerides and free fatty acids. These mice also showed accelerated enterocyte maturation and a longer small intestine. This was accompanied by higher levels of liver-derived very low-density lipoprotein and low-density lipoprotein triglycerides, and a lower level of high-density lipoprotein cholesterol in the serum. Mice exposed during the neonatal period to oral iAs also developed hepatosteatosis. Compared with the control group, iAs-induced fat accumulation in enterocytes became more significant in neonatal L x r α - / - mice, accompanied by accelerated intestinal growth, hypertriglyceridemia, and hepatosteatosis. In contrast, regardless of enterocyte fat accumulation, hepatosteatosis was largely reduced in iAs-treated neonatal A t f 4 Δ H e p mice. CONCLUSION Exposure to iAs in neonatal mice resulted in excessive accumulation of fat in enterocytes, disrupting lipid homeostasis in the serum and liver, revealing the importance of the gut-liver axis and endoplasmic reticulum stress in mediating iAs-induced NAFLD at an early age. https://doi.org/10.1289/EHP12381.
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Affiliation(s)
- Xiaojing Yang
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - André A. Weber
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - Elvira Mennillo
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - Patrick Secrest
- Department of Medicine, Division of Endocrinology and Metabolism, UC San Diego, La Jolla, California, USA
| | - Max Chang
- Department of Medicine, School of Medicine, UC San Diego, La Jolla, California, USA
| | - Samantha Wong
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - Sabrina Le
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - Junlai Liu
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, UC San Diego, La Jolla, California, USA
| | | | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, UC San Diego, La Jolla, California, USA
| | - Philip L.S.M. Gordts
- Department of Medicine, Division of Endocrinology and Metabolism, UC San Diego, La Jolla, California, USA
| | - Robert H. Tukey
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
| | - Shujuan Chen
- Laboratory of Environmental Toxicology, Department of Pharmacology, University of California, San Diego (UC San Diego), La Jolla, California, USA
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Chen X, Wu R, Wu H, Hu Y, Wang H, Fu J, Pi J, Xu Y. Integrated miRNA-mRNA analysis reveals the dysregulation of lipid metabolism in mouse liver induced by developmental arsenic exposure. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130459. [PMID: 36463740 DOI: 10.1016/j.jhazmat.2022.130459] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Developmental arsenic exposure leads to increased susceptibility to liver diseases including nonalcoholic fatty liver diseases, but the mechanism is incompletely understood. In this study, C57BL/6J mice were used to establish a lifetime arsenic exposure model covering developmental stage. We found that arsenic-exposed offspring in later life showed hepatic lipid deposition and increased triglyceride content. Despite no significant hepatic pathological changes in the offspring at weaning, 86 miRNAs and 136 mRNAs were differentially expressed according to miRNA array and mRNA sequencing. The differentially expressed genes (DEGs) were crossed with the target genes predicted by differentially expressed miRNAs (DEMs), and 47 differentially expressed target genes (DETGs) were obtained. Functional annotation suggested that lipid metabolism related pathways were significantly enriched. The pivotal regulator in the four major pathways to maintain liver lipid homeostasis were further determined, with significant alterations found in FABP5, SREBP1, ACOX1 and EHHADH. Of note, miRNA-mRNA integration analysis revealed that miR-7118-5p, miR-7050-5p, miR-27a/b-3p, and miR-103-3p acted as key regulators of fatty acid metabolism genes. Taken together, miRNA-mRNA integration analysis indicates that the lipid metabolism pathway in the liver of weaned mice was dysregulated by developmental arsenic exposure, which may contribute to the development of NAFLD in later life.
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Affiliation(s)
- Xin Chen
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Ruirui Wu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Hengchao Wu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Yuxin Hu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Huihui Wang
- School of Public Health, China Medical University, Shenyang, Liaoning, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, Liaoning, China
| | - Jingqi Fu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, Liaoning, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, Liaoning, China
| | - Yuanyuan Xu
- School of Public Health, China Medical University, Shenyang, Liaoning, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, Liaoning, China.
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Liu J, Hermon T, Gao X, Dixon D, Xiao H. Arsenic and Diabetes Mellitus: A Putative Role for the Immune System. ALL LIFE 2023; 16:2167869. [PMID: 37152101 PMCID: PMC10162781 DOI: 10.1080/26895293.2023.2167869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 01/02/2023] [Indexed: 02/04/2023] Open
Abstract
Diabetes mellitus (DM) is an enormous public health issue worldwide. Recent data suggest that chronic arsenic exposure is linked to the risk of developing type 1 and type 2 DM, albeit the underlying mechanisms are unclear. This review discusses the role of the immune system as a link to possibly explain some of the mechanisms of developing T1DM or T2DM associated with arsenic exposure in humans, animal models, and in vitro studies. The rationale for the hypothesis includes: (1) Arsenic is a well-recognized modulator of the immune system; (2) arsenic exposures are associated with increased risk of DM; and (3) dysregulation of the immune system is one of the hallmarks in the pathogenesis of both T1DM and T2DM. A better understanding of DM in association with immune dysregulation and arsenic exposures may help to understand how environmental exposures modulate the immune system and how these effects may impact the manifestation of disease.
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Affiliation(s)
- Jingli Liu
- Molecular Pathogenesis Group, Mechanistic Toxicology Branch, Division of the National Toxicology Program (DNTP), National Institute of Environmental Health Sciences (NIEHS), NIH, DHHS, 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Tonia Hermon
- Molecular Pathogenesis Group, Mechanistic Toxicology Branch, Division of the National Toxicology Program (DNTP), National Institute of Environmental Health Sciences (NIEHS), NIH, DHHS, 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Xiaohua Gao
- Molecular Pathogenesis Group, Mechanistic Toxicology Branch, Division of the National Toxicology Program (DNTP), National Institute of Environmental Health Sciences (NIEHS), NIH, DHHS, 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Darlene Dixon
- Molecular Pathogenesis Group, Mechanistic Toxicology Branch, Division of the National Toxicology Program (DNTP), National Institute of Environmental Health Sciences (NIEHS), NIH, DHHS, 111 TW Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Hang Xiao
- Key Lab of Modern Toxicology (NJMU), Ministry of Education, Department of Toxicology, School of Public Health, Nanjing Medical University, 140 Hanzhong Road, Nanjing 210029, Jiangsu, China
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Singh RD, Tiwari R, Sharma V, Khan H, Gangopadhyay S, Singh S, Koshta K, Shukla S, Arjaria N, Mandrah K, Jagdale PR, Patnaik S, Roy SK, Singh D, Giri AK, Srivastava V. Prenatal arsenic exposure induces immunometabolic alteration and renal injury in rats. Front Med (Lausanne) 2023; 9:1045692. [PMID: 36714129 PMCID: PMC9874122 DOI: 10.3389/fmed.2022.1045692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/12/2022] [Indexed: 01/12/2023] Open
Abstract
Arsenic (As) exposure is progressively associated with chronic kidney disease (CKD), a leading public health concern present worldwide. The adverse effect of As exposure on the kidneys of people living in As endemic areas have not been extensively studied. Furthermore, the impact of only prenatal exposure to As on the progression of CKD also has not been fully characterized. In the present study, we examined the effect of prenatal exposure to low doses of As 0.04 and 0.4 mg/kg body weight (0.04 and 0.4 ppm, respectively) on the progression of CKD in male offspring using a Wistar rat model. Interestingly, only prenatal As exposure was sufficient to elevate the expression of profibrotic (TGF-β1) and proinflammatory (IL-1α, MIP-2α, RANTES, and TNF-α) cytokines at 2-day, 12- and 38-week time points in the exposed progeny. Further, alteration in adipogenic factors (ghrelin, leptin, and glucagon) was also observed in 12- and 38-week old male offspring prenatally exposed to As. An altered level of these factors coincides with impaired glucose metabolism and homeostasis accompanied by progressive kidney damage. We observed a significant increase in the deposition of extracellular matrix components and glomerular and tubular damage in the kidneys of 38-week-old male offspring prenatally exposed to As. Furthermore, the overexpression of TGF-β1 in kidneys corresponds with hypermethylation of the TGF-β1 gene-body, indicating a possible involvement of prenatal As exposure-driven epigenetic modulations of TGF-β1 expression. Our study provides evidence that prenatal As exposure to males can adversely affect the immunometabolism of offspring which can promote kidney damage later in life.
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Affiliation(s)
- Radha Dutt Singh
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India,Radha Dutt Singh, ,
| | - Ratnakar Tiwari
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Vineeta Sharma
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Department of Biotechnology, Faculty of Engineering and Technology, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India
| | - Hafizurrahman Khan
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India
| | - Siddhartha Gangopadhyay
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India
| | - Sukhveer Singh
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India
| | - Kavita Koshta
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India
| | - Shagun Shukla
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Nidhi Arjaria
- Advanced Imaging Facility, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Kapil Mandrah
- Academy of Scientific and Innovative Research, New Delhi, India,Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Pankaj Ramji Jagdale
- Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Satyakam Patnaik
- Academy of Scientific and Innovative Research, New Delhi, India,Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Somendu Kumar Roy
- Academy of Scientific and Innovative Research, New Delhi, India,Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Dhirendra Singh
- Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Ashok Kumar Giri
- Molecular and Human Genetics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Vikas Srivastava
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India,Academy of Scientific and Innovative Research, New Delhi, India,*Correspondence: Vikas Srivastava, ,
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7
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Andrews FV, Branscum A, Hystad P, Smit E, Afroz S, Golam M, Sharif O, Rahman M, Quamruzzaman Q, Christiani DC, Kile ML. A prospective study of arsenic and manganese exposures and maternal blood pressure during gestation. ENVIRONMENTAL RESEARCH 2022; 214:113845. [PMID: 35830911 PMCID: PMC9629670 DOI: 10.1016/j.envres.2022.113845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/24/2022] [Accepted: 07/05/2022] [Indexed: 06/12/2023]
Abstract
BACKGROUND Pregnancy is a sensitive time for maternal cardiovascular functioning and exposures to arsenic or manganese may adversely affect blood pressure (BP). OBJECTIVES This study examined the associations between arsenic and manganese exposures and maternal BP measured during pregnancy. Effect modification by pre-pregnancy body mass index (BMI) was evaluated. METHODS Pregnant women (N = 1522) were recruited for a prospective cohort study in Bangladesh (2008-2011). Exposure to arsenic and manganese was measured in drinking water at <16 weeks gestation and toenails at one-month postpartum. Systolic and diastolic BP were measured monthly. Linear mixed models estimated mean BP and differences in mean BP over gestation for arsenic or manganese exposures and adjusted for covariates. RESULTS Arsenic levels had an increasing dose-response association with maternal BP after 25 weeks gestation. Effect modification was observed for BMI. Participants with lower BMI (<23 kg/m2) exposed to 50 μg/L arsenic had 2.83 mmHg (95% CI:1.74-3.92) greater mean systolic and 1.96 mmHg (95% CI: 1.02-2.91 mmHg) diastolic BP compared to those exposed to ≤ 1 μg/L arsenic at 40 weeks gestation. Participants with higher BMI (≥23 kg/m2) showed a greater mean systolic BP of 5.72 mmHg (95% CI: 3.18-8.27 mmHg) and diastolic BP change of 6.09 mmHg (95% CI: 4.02-8.16 mmHg) at 40 weeks gestation when exposed to 50 μg/L compared to ≤ 1 μg/L arsenic. Participants with lower BMI exposed to drinking water manganese in the 2nd quartile (181-573 μg/L) had 1.04 mmHg higher mean diastolic BP (95% CI: 0.01-2.07 mmHg) at 40 weeks gestation compared to those in the 1st quartile (0.5-180 μg/L). CONCLUSION Arsenic exposures during pregnancy were consistently associated with increased average maternal systolic and diastolic BP. The effect of manganese on BP was less consistent.
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Affiliation(s)
- Faye V Andrews
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA; Oregon Clinical and Translational Research Institute, Oregon Health and Sciences University, Portland, OR, USA.
| | - Adam Branscum
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
| | - Perry Hystad
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
| | - Ellen Smit
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
| | - Sakila Afroz
- Dhaka Community Hospital Trust, Dhaka, Bangladesh
| | | | - Omar Sharif
- Dhaka Community Hospital Trust, Dhaka, Bangladesh
| | | | | | - David C Christiani
- Harvard T.H. Chan School of Public Health, Department of Environmental Health, Harvard University, Boston, MA, USA
| | - Molly L Kile
- School of Biological and Population Health Sciences, College of Public Health and Human Sciences, Oregon State University, Corvallis, OR, USA
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8
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Wu H, Wu R, Chen X, Geng H, Hu Y, Gao L, Fu J, Pi J, Xu Y. Developmental arsenic exposure induces dysbiosis of gut microbiota and disruption of plasma metabolites in mice. Toxicol Appl Pharmacol 2022; 450:116174. [PMID: 35878798 DOI: 10.1016/j.taap.2022.116174] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 10/16/2022]
Abstract
Arsenic is a notorious environmental pollutant. Of note, developmental arsenic exposure has been found to increase the risk of developing a variety of ailments later in life, but the underlying mechanism is not well understood. Many elements of host health have been connected to the gut microbiota. It is still unclear whether and how developmental arsenic exposure affects the gut microbiota. In the present study, we found that developmental arsenic exposure changed intestinal morphology and increased intestinal permeability and inflammation in mouse pups at weaning. These alterations were accompanied by a significant change in gut microbiota, as evidenced by considerably reduced gut microbial richness and diversity. In developmentally arsenic-exposed pups, the relative abundance of Muribaculaceae was significantly decreased, while the relative abundance of Akkermansia and Bacteroides was significantly enhanced at the genus level. Metabolome and pathway enrichment analyses indicated that amino acid and purine metabolism was promoted, while glycerophospholipid metabolism was inhibited. Interestingly, the relative abundance of Muribaculaceae and Akkermansia showed a strong correlation with most plasma metabolites significantly altered by developmental arsenic exposure. These data indicate that gut microbiota dysbiosis may be a critical link between developmental arsenic exposure and metabolic disorders and shed light on the mechanisms underlying increased susceptibility to diseases due to developmental arsenic exposure.
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Affiliation(s)
- Hengchao Wu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Ruirui Wu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Xin Chen
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Huamin Geng
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Yuxin Hu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Lanyue Gao
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Jingqi Fu
- School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, Liaoning, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, Liaoning, China
| | - Yuanyuan Xu
- School of Public Health, China Medical University, Shenyang, Liaoning, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, Liaoning, China.
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9
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Upamalika SWAM, Wannige CT, Vidanagamachchi SM, Gunasekara SC, Kolli RT, De Silva PMCS, Kulasiri D, Jayasundara N. A review of molecular mechanisms linked to potential renal injury agents in tropical rural farming communities. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 92:103850. [PMID: 35301132 DOI: 10.1016/j.etap.2022.103850] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
The chronic kidney disease of unknown etiology (CKDu) is a global health concern primarily impacting tropical farming communities. Although the precise etiology is debated, CKDu is associated with environmental exposures including heat stress and chemical contaminants such as fluoride, heavy metals, and herbicide glyphosate. However, a comprehensive synthesis is lacking on molecular networks underpinning renal damage induced by these factors. Addressing this gap, here we present key molecular events associated with heat and chemical exposures. We identified that caspase activation and lipid peroxidation are common endpoints of glyphosate exposure, while vasopressin and polyol pathways are associated with heat stress and dehydration. Heavy metal exposure is shown to induce lipid peroxidation and endoplasmic reticulum stress from ROS activated MAPK, NFĸB, and caspase. Collectively, we identify that environmental exposure induced increased cellular oxidative stress as a common mechanism mediating renal cell inflammation, apoptosis, and necrosis, likely contributing to CKDu initiation and progression.
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Affiliation(s)
| | | | | | | | - Ramya Tulasi Kolli
- Nicholas School of the Environment, Duke University, NC 27708, United States.
| | | | - Don Kulasiri
- Department of Molecular Biosciences, and Centre for Advanced Computational Solutions (C-fACS), Lincoln University, New Zealand.
| | - Nishad Jayasundara
- Nicholas School of the Environment, Duke University, NC 27708, United States.
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10
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Preparation, Characterization, and Evaluation of Breviscapine Nanosuspension and Its Freeze-Dried Powder. Pharmaceutics 2022; 14:pharmaceutics14050923. [PMID: 35631508 PMCID: PMC9143020 DOI: 10.3390/pharmaceutics14050923] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/16/2022] [Accepted: 04/20/2022] [Indexed: 01/19/2023] Open
Abstract
As a biopharmaceutics classification system (BCS) class IV drug, breviscapine (Bre) has low solubility in water, poor chemical stability, a short biological half-life and rapid removal from plasma. This paper prepared a Bre nanosuspension (Bre-NS) by an ultrasound-assisted anti-solvent precipitation method. Characterization of Bre-NS was studied using a Box–Behnken design concerning drug concentration in DMSO, an anti-solvent-to-solvent ratio, and sonication time. Under the optimized conditions of 170 mg/mL for the drug concentration, a 1:60 solvent-to-anti-solvent ratio, and a 9 min sonication time, the particle size of Bre-NS was 303.7 ± 7.3 nm, the polydispersity index was 0.178 ± 0.015, and the zeta potential was −31.10 ± 0.26 mV. Combined with the results from differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), and Fourier transform-infrared spectroscopy (FT-IR), the findings indicated that the crystal form and chemical structure of Bre-NS did not change during the entire process. The optimized formulation displayed good stability, increased solubility, and better in vitro release. Therefore, the results of this study can be a reference for the delivery system design of insoluble active components and effective parts in traditional Chinese medicine.
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Ozturk M, Metin M, Altay V, Bhat RA, Ejaz M, Gul A, Unal BT, Hasanuzzaman M, Nibir L, Nahar K, Bukhari A, Dervash MA, Kawano T. Arsenic and Human Health: Genotoxicity, Epigenomic Effects, and Cancer Signaling. Biol Trace Elem Res 2022; 200:988-1001. [PMID: 33864199 DOI: 10.1007/s12011-021-02719-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/11/2021] [Indexed: 02/06/2023]
Abstract
Arsenic is a well-known element because of its toxicity. Humans as well as plants and animals are negatively affected by its exposure. Some countries suffer from high levels of arsenic in their tap water and soils, which is considered a primary arsenic-linked risk factor for living beings. Humans generally get exposed to arsenic by contaminated drinking waters, resulting in many health problems, ranging from cancer to skin diseases. On the other hand, the FDA-certified drug arsenic trioxide provides solutions for various diseases, including several types of cancers. This issue emphasizes the importance of speciation of the metalloid elements in terms of impacts on health. When species get exposed to arsenic, it affects the cells altering their involvement. It can lead to abnormalities in inflammatory mechanisms and the immune system which contribute to the negative impacts generated on the body. The poisoning originating from arsenic gives rise to various biological signs on the body which can be useful for the diagnosis. It is important to find true biomarkers for the detection of arsenic poisoning. In view of its application in medicine and biology, studies on understanding the biological activity of arsenic have increased. In this review, we aim at summarizing the current state of knowledge of arsenic and the mechanism behind its toxicity including genotoxicity, oxidative insults, epigenomic changes, and alterations in cellular signaling.
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Affiliation(s)
- Munir Ozturk
- Department of Botany and Centre for Environmental Studies, Ege University, Izmir, Turkey.
| | - Mert Metin
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | - Volkan Altay
- Department of Biology, Faculty of Science and Arts, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Rouf Ahmad Bhat
- Department of Environmental Science, Sri Pratap College, Cluster University Srinagar, Srinagar, Kashmir, India
| | - Mahnoor Ejaz
- Atta-ur-Rahman School of Applied Biosciences, Nat. University of Sciences & Technology, Islamabad, Pakistan
| | - Alvina Gul
- Atta-ur-Rahman School of Applied Biosciences, Nat. University of Sciences & Technology, Islamabad, Pakistan
| | - Bengu Turkyilmaz Unal
- Faculty of Science and Arts, Dept. of Biotechnology, Nigde Omer Halisdemir University, Nigde, Turkey
| | - Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Lutfunnahar Nibir
- Upazilla Health Complex, Ministry of Health, Government of the People's, Homna, Comilla, Bangladesh
| | - Kamuran Nahar
- Dept. of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricul. University, Dhaka, Bangladesh
| | - Andleep Bukhari
- Medical Pharmacology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Moonisa Aslam Dervash
- Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar, Kashmir, India
| | - Tomonori Kawano
- Graduate School of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
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Kantisin S, Chaisatra K, Hunsonti P, Parnlob V, Navasumrit P, Ruchirawat M. In utero arsenic exposure increases DNA damage and gene expression changes in umbilical cord mesenchymal stem cells (UC-MSCs) from newborns as well as in UC-MSC differentiated hepatocytes. Toxicol Rep 2022; 9:1728-1741. [DOI: 10.1016/j.toxrep.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 09/06/2022] [Indexed: 10/14/2022] Open
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13
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Hu C, Wang P, Yang Y, Li J, Jiao X, Yu H, Wei Y, Li J, Qin Y. Chronic Intermittent Hypoxia Participates in the Pathogenesis of Atherosclerosis and Perturbs the Formation of Intestinal Microbiota. Front Cell Infect Microbiol 2021; 11:560201. [PMID: 34277461 PMCID: PMC8281814 DOI: 10.3389/fcimb.2021.560201] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 04/21/2021] [Indexed: 11/13/2022] Open
Abstract
Chronic intermittent hypoxia (CIH) is the prominent signature of highly prevalent obstructive sleep apnea (OSA) pathophysiology, which leads to increased risk and aggravation of atherosclerotic cardiovascular diseases. However, whether intestinal microbiota is implicated in the mechanisms linking CIH to arteriosclerosis (AS) pathogenesis remains unclear. The association of CIH with the development of altered gut microbiota (GM) may provide the opportunity to develop preventive strategies for atherosclerotic cardiovascular risk reduction. Animal models of apolipoprotein E-deficient (apoE-/-) mice treated with high-fat diet (HFD) and subjected to CIH conditions was applied to mimic the AS observed in patients with OSA. The physiological status and atherosclerotic lesion formation were confirmed by histological analysis. 16S rDNA sequencing of fecal samples was conducted to determine the changes in gut microbial composition. Morphometric analysis demonstrated that CIH caused aggravated atherosclerotic lesions and facilitated AS in apoE-/- mice treated with HFD. The gut bacteria was significantly varied in AS and AS+CIH mice compared with that in the control mice. Significantly perturbed GM profiles were detected in AS mice with and without CIH, with altered microbial α- and β- diversity and shifts in bacterial compositions at phylum and genus levels. While the difference between AS and AS+CIH was observed at different bacteria taxa levels. Aggravation of reduced Sutterella and increased Halomonas, Halomonadaceae and Oceanospirillales was noted in CIH-treated AS mice. The correlation of intestinal bacterial parameters with pathological changes in artery indicated complicated interactions under CIH-induced GM dysbiosis. Furthermore, the gut microbial functions in the potential ability of replication recombination and repair proteins, glycan biosynthesis and metabolism, as well as metabolism of cofactors and vitamins were identified to be further suppressed by CIH. Our findings demonstrated a causal effect of CIH on GM alterations in AS mice and suggested that the disordered GM features in AS development were deteriorated by CIH, which may be associated with AS aggravation. Preventative strategies targeting gut microbiome are highly recommended for intervention of OSA-related AS.
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Affiliation(s)
- Chaowei Hu
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Pan Wang
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yunyun Yang
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Juan Li
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Xiaolu Jiao
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Huahui Yu
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Yongxiang Wei
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Otolaryngological Department of Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jing Li
- Heart Center & Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yanwen Qin
- Key Laboratory of Upper Airway Dysfunction-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Key Laboratory of Remodeling-related Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
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14
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Negro Silva LF, Makhani K, Lemaire M, Lemarié CA, Plourde D, Bolt AM, Chiavatti C, Bohle DS, Lehoux S, Goldberg MS, Mann KK. Sex-Specific Effects of Prenatal and Early Life Inorganic and Methylated Arsenic Exposure on Atherosclerotic Plaque Development and Composition in Adult ApoE-/- Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:57008. [PMID: 34014776 PMCID: PMC8136521 DOI: 10.1289/ehp8171] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/26/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Epidemiologic studies indicate that early life arsenic exposures are linked to an increased risk of cardiovascular diseases. Different oxidation and methylation states of arsenic exist in the environment and are formed in vivo via the action of arsenic (+3 oxidation state) methyltransferase (As3MT). Methylated arsenicals are pro-atherogenic postnatally, but pre- and perinatal effects are unclear. This is particularly important because methylated arsenicals are known to cross the placenta. OBJECTIVES We tested the effects of early life exposure to inorganic and methylated arsenicals on atherosclerotic plaque formation and its composition in apolipoprotein E knock-out (apoE-/-) mice and evaluated whether apoE-/- mice lacking As3MT expression were susceptible to this effect. METHODS We exposed apoE-/- or apoE-/-/As3MT-/- mice to 200 ppb inorganic or methylated arsenic in the drinking water from conception to weaning and assessed atherosclerotic plaques in the offspring at 18 wk of age. Mixed regression models were used to estimate the mean difference in each outcome relative to controls, adjusting for sex and including a random effects term to account for within-litter clustering. RESULTS Early life exposure to inorganic arsenic, and more profoundly methylated arsenicals, resulted in significantly larger plaques in the aortic arch and sinus in both sexes. Lipid levels in these plaques were higher without a substantial difference in macrophage numbers. Smooth muscle cell content was not altered, but collagen content was lower. Importantly, there were sex-specific differences in these observations, where males had higher lipids and lower collagen in the plaque, but females did not. In mice lacking As3MT, arsenic did not alter the plaque size, although the size was highly variable. In addition, control apoE-/-/As3MT-/- mice had significantly larger plaque size compared with control apoE-/-. CONCLUSION This study shows that early life exposure to inorganic and methylated arsenicals is pro-atherogenic with sex-specific differences in plaque composition and a potential role for As3MT in mice. https://doi.org/10.1289/EHP8171.
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Affiliation(s)
| | - Kiran Makhani
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Maryse Lemaire
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Catherine A. Lemarié
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
- EA3878, European University of Occidental Brittany, Brest, France
- UMR 1078, Institut national de la santé et de la recherché médicale, Brest, France
| | - Dany Plourde
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Alicia M. Bolt
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Christopher Chiavatti
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - D. Scott Bohle
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
| | - Stéphanie Lehoux
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - Mark S. Goldberg
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
- Division of Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Koren K. Mann
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
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15
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Stýblo M, Venkatratnam A, Fry RC, Thomas DJ. Origins, fate, and actions of methylated trivalent metabolites of inorganic arsenic: progress and prospects. Arch Toxicol 2021; 95:1547-1572. [PMID: 33768354 DOI: 10.1007/s00204-021-03028-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 03/11/2021] [Indexed: 12/16/2022]
Abstract
The toxic metalloid inorganic arsenic (iAs) is widely distributed in the environment. Chronic exposure to iAs from environmental sources has been linked to a variety of human diseases. Methylation of iAs is the primary pathway for metabolism of iAs. In humans, methylation of iAs is catalyzed by arsenic (+ 3 oxidation state) methyltransferase (AS3MT). Conversion of iAs to mono- and di-methylated species (MAs and DMAs) detoxifies iAs by increasing the rate of whole body clearance of arsenic. Interindividual differences in iAs metabolism play key roles in pathogenesis of and susceptibility to a range of disease outcomes associated with iAs exposure. These adverse health effects are in part associated with the production of methylated trivalent arsenic species, methylarsonous acid (MAsIII) and dimethylarsinous acid (DMAsIII), during AS3MT-catalyzed methylation of iAs. The formation of these metabolites activates iAs to unique forms that cause disease initiation and progression. Taken together, the current evidence suggests that methylation of iAs is a pathway for detoxification and for activation of the metalloid. Beyond this general understanding of the consequences of iAs methylation, many questions remain unanswered. Our knowledge of metabolic targets for MAsIII and DMAsIII in human cells and mechanisms for interactions between these arsenicals and targets is incomplete. Development of novel analytical methods for quantitation of MAsIII and DMAsIII in biological samples promises to address some of these gaps. Here, we summarize current knowledge of the enzymatic basis of MAsIII and DMAsIII formation, the toxic actions of these metabolites, and methods available for their detection and quantification in biomatrices. Major knowledge gaps and future research directions are also discussed.
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Affiliation(s)
- Miroslav Stýblo
- Department of Nutrition, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
| | - Abhishek Venkatratnam
- Department of Nutrition, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Department of Environmental Science and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Rebecca C Fry
- Department of Environmental Science and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - David J Thomas
- Chemical Characterization and Exposure Division, Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27709, USA.
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16
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Ferragut Cardoso AP, Udoh KT, States JC. Arsenic-induced changes in miRNA expression in cancer and other diseases. Toxicol Appl Pharmacol 2020; 409:115306. [PMID: 33127375 PMCID: PMC7772821 DOI: 10.1016/j.taap.2020.115306] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/20/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023]
Abstract
miRNAs (miRNA) are essential players regulating gene expression affecting cellular processes contributing to disease development. Dysregulated miRNA expression has been observed in numerous diseases including hepatitis, cardiovascular diseases and cancers. In cardiovascular diseases, several miRNAs function as mediators of pathogenic stress-related signaling pathways that may lead to an excessive extracellular matrix production and collagen deposition causing cardiac stress resulting in fibrosis. In cancers, many miRNAs function as oncogenes or tumor suppressors facilitating tumor growth, invasion and angiogenesis. Furthermore, the association between distinct miRNA profile and tumor development, progression and treatment response has identified miRNAs as potential biomarkers for disease diagnosis and prognosis. Growing evidence demonstrates changes in miRNA expression levels in experimental settings or observational studies associated with environmental chemical exposures such as arsenic. Arsenic is one of the most well-known human carcinogens. Long-term exposure through drinking water increases risk of developing skin, lung and urinary bladder cancers, as well as cardiovascular disease. The mechanism(s) by which arsenic causes disease remains elusive. Proposed mechanisms include miRNA dysregulation. Epidemiological studies identified differential miRNA expression between arsenic-exposed and non-exposed individuals from India, Bangladesh, China and Mexico. In vivo and in vitro studies have shown that miRNAs are critically involved in arsenic-induced malignant transformation. Few studies analyzed miRNAs in other diseases associated with arsenic exposure. Importantly, there is no consensus on a consistent miRNA profile for arsenic-induced cancers because most studies analyze only particular miRNAs. Identifying miRNA expression changes common among humans, rodents and cell lines might guide future miRNA investigations.
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Affiliation(s)
- Ana P Ferragut Cardoso
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA
| | - Karen T Udoh
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA
| | - J Christopher States
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA.
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17
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Liu J, Gunewardena S, Yue Cui J, Klaassen CD, Chorley BN, Corton JC. Transplacental arsenic exposure produced 5-methylcytosine methylation changes and aberrant microRNA expressions in livers of male fetal mice. Toxicology 2020; 435:152409. [PMID: 32068019 PMCID: PMC10546472 DOI: 10.1016/j.tox.2020.152409] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/11/2020] [Accepted: 02/13/2020] [Indexed: 10/25/2022]
Abstract
Arsenic is a known human carcinogen. Early-life exposure to inorganic arsenic induces tumors in humans and in C3H mice. We hypothesized that arsenic exposure in utero may induce epigenetic changes at the level of DNA methylation and miRNA alterations that could lead to greater postnatal susceptibility to cancer. To test this hypothesis, pregnant C3H mice were given sodium arsenite at doses known to cause liver cancer (42.5 and 85 ppm in the drinking water) from gestation day 8-19, and the livers from male fetal mice were collected for analysis. The antibody against 5-methylcytosine was used to perform chromatin-immunoprecipitation coupled with sequencing (ChIP-Seq) to determine genome-wide methylation alterations. In utero arsenic exposure produced global DNA hypomethylation and an array of gene-specific DNA methylation changes, including hypomethylation of Cyclin D1 and hypermethylation of Tp53. Illumina Correlation Engine analysis revealed 260 methylation alterations that would affect 143 microRNAs. MicroRNA array further revealed 140 aberrantly expressed miRNAs out of the 718 miRNAs. The increased expression of miR-205, miR-203, miR-215, miR-34a, and decreased expression of miR-217 were confirmed by qPCR. Comparison of the methylation changes to those of microarray analyses indicates little if any correspondence between gene methylation and gene expression. The increased expression of Xist, Prrc2, Krit1, Nish, and decreased expression of Prss2, Spp1, Col1a2, and Lox were confirmed by qPCR. In summary, in utero arsenic exposure induced global alterations in DNA methylation and aberrant miRNA expression that might contribute to adult adverse outcomes including liver cancer.
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Affiliation(s)
- Jie Liu
- University of Kansas Medical Center, Kansas City, KS 66160, United States; USEPA, Office of Research and Development, National Health and Environmental Effect Research Laboratory, Research Triangle Park, NC 27711, United States; Key Lab of Pharmacology of Ministry of Education, Zunyi Medical College, Zunyi, China.
| | | | - Julia Yue Cui
- University of Kansas Medical Center, Kansas City, KS 66160, United States
| | - Curtis D Klaassen
- University of Kansas Medical Center, Kansas City, KS 66160, United States
| | - Brian N Chorley
- USEPA, Office of Research and Development, National Health and Environmental Effect Research Laboratory, Research Triangle Park, NC 27711, United States
| | - J Christopher Corton
- USEPA, Office of Research and Development, National Health and Environmental Effect Research Laboratory, Research Triangle Park, NC 27711, United States.
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18
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Navas-Acien A, Spratlen MJ, Abuawad A, LoIacono NJ, Bozack AK, Gamble MV. Early-Life Arsenic Exposure, Nutritional Status, and Adult Diabetes Risk. Curr Diab Rep 2019; 19:147. [PMID: 31758285 PMCID: PMC7004311 DOI: 10.1007/s11892-019-1272-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW In utero influences, including nutrition and environmental chemicals, may induce long-term metabolic changes and increase diabetes risk in adulthood. This review evaluates the experimental and epidemiological evidence on the association of early-life arsenic exposure on diabetes and diabetes-related outcomes, as well as the influence of maternal nutritional status on arsenic-related metabolic effects. RECENT FINDINGS Five studies in rodents have evaluated the role of in utero arsenic exposure with diabetes in the offspring. In four of the studies, elevated post-natal fasting glucose was observed when comparing in utero arsenic exposure with no exposure. Rodent offspring exposed to arsenic in utero also showed elevated insulin resistance in the 4 studies evaluating it as well as microRNA changes related to glycemic control in 2 studies. Birth cohorts of arsenic-exposed pregnant mothers in New Hampshire, Mexico, and Taiwan have shown that increased prenatal arsenic exposure is related to altered cord blood gene expression, microRNA, and DNA methylation profiles in diabetes-related pathways. Thus far, no epidemiologic studies have evaluated early-life arsenic exposure with diabetes risk. Supplementation trials have shown B vitamins can reduce blood arsenic levels in highly exposed, undernourished populations. Animal evidence supports that adequate B vitamin status can rescue early-life arsenic-induced diabetes risk, although human data is lacking. Experimental animal studies and human evidence on the association of in utero arsenic exposure with alterations in gene expression pathways related to diabetes in newborns, support the potential role of early-life arsenic exposure in diabetes development, possibly through increased insulin resistance. Given pervasive arsenic exposure and the challenges to eliminate arsenic from the environment, research is needed to evaluate prevention interventions, including the possibility of low-cost, low-risk nutritional interventions that can modify arsenic-related disease risk.
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Affiliation(s)
- Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA.
| | - Miranda J Spratlen
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA
| | - Ahlam Abuawad
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA
| | - Nancy J LoIacono
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA
| | - Anne K Bozack
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA
| | - Mary V Gamble
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W168th Street, New York, NY, 10032, USA
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Lipid Metabolism Alterations in a Rat Model of Chronic and Intergenerational Exposure to Arsenic. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4978018. [PMID: 31737665 PMCID: PMC6815581 DOI: 10.1155/2019/4978018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/17/2019] [Accepted: 08/20/2019] [Indexed: 12/26/2022]
Abstract
Chronic exposure to arsenic (As), whether directly through the consumption of contaminated drinking water or indirectly through the daily intake of As-contaminated food, is a health threat for more than 150 million people worldwide. Epidemiological studies found an association between chronic consumption of As and several pathologies, the most common being cancer-related disorders. However, As consumption has also been associated with metabolic disorders that could lead to diverse pathologies, such as type 2 diabetes mellitus, nonalcoholic fatty liver disease, and obesity. Here, we used ultra-performance liquid chromatography (UPLC) coupled to electrospray ionization/quadrupole time-of-flight mass spectrometry (ESI-QToF) to assess the effect of chronic intergenerational As exposure on the lipid metabolism profiles of serum from 4-month-old Wistar rats exposed to As prenatally and also during early life in drinking water (3 ppm). Significant differences in the levels of certain identified lysophospholipids, phosphatidylcholines, and triglycerides were found between the exposed rats and the control groups, as well as between the sexes. Significantly increased lipid oxidation determined by the malondialdehyde (MDA) method was found in exposed rats compared with controls. Chronic intergenerational As exposure alters the rat lipidome, increases lipid oxidation, and dysregulates metabolic pathways, the factors associated with the chronic inflammation present in different diseases associated with chronic exposure to As (i.e., keratosis, Bowen's disease, and kidney, liver, bladder, and lung cancer).
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20
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Potential facet for prenatal arsenic exposure paradigm: linking endocrine disruption and epigenetics. THE NUCLEUS 2019. [DOI: 10.1007/s13237-019-00274-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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21
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Mukhopadhyay P, Seelan RS, Greene RM, Pisano MM. Impact of prenatal arsenate exposure on gene expression in a pure population of migratory cranial neural crest cells. Reprod Toxicol 2019; 86:76-85. [PMID: 30953684 DOI: 10.1016/j.reprotox.2019.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 11/27/2022]
Abstract
Prenatal exposure to arsenic, a naturally occurring toxic element, causes neural tube defects (NTDs) and, in animal models, orofacial anomalies. Since aberrant development or migration of cranial neural crest cells (CNCCs) can also cause similar anomalies within developing embryos, we examined the effects of in utero exposure to sodium arsenate on gene expression patterns in pure populations of CNCCs, isolated by fluorescence activated cell sorting (FACS), from Cre/LoxP reporter mice. Changes in gene expression were analyzed using Affymetrix GeneChip® microarrays and expression of selected genes was verified by TaqMan quantitative real-time PCR. We report, for the first time, arsenate-induced alterations in the expression of a number of novel candidate genes and canonical cascades that may contribute to the pathogenesis of orofacial defects. Ingenuity Pathway and NIH-DAVID analyses revealed cellular response pathways, biological themes, and potential upstream regulators, that may underlie altered fetal programming of arsenate exposed CNCCs.
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Affiliation(s)
- Partha Mukhopadhyay
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development and Anomalies, ULSD, University of Louisville, Louisville, KY 40202, United States
| | - Ratnam S Seelan
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development and Anomalies, ULSD, University of Louisville, Louisville, KY 40202, United States
| | - Robert M Greene
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development and Anomalies, ULSD, University of Louisville, Louisville, KY 40202, United States.
| | - M Michele Pisano
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development and Anomalies, ULSD, University of Louisville, Louisville, KY 40202, United States
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22
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Long-Term Health Effects and Underlying Biological Mechanisms of Developmental Exposure to Arsenic. Curr Environ Health Rep 2019; 5:134-144. [PMID: 29411302 DOI: 10.1007/s40572-018-0184-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE OF REVIEW Exposure to inorganic arsenic (iAs) via drinking water represents a significant global public health threat with chronic exposure associated with cancer, skin lesions, neurological impairment, and cardiovascular diseases. Particularly susceptible populations include the developing fetus and young children. This review summarizes some of the critical studies of the long-term health effects and underlying biological mechanisms related to developmental exposure to arsenic. It also highlights the complex factors, such as the sex of the exposed individual, that contribute to susceptibility to the later life health effects of iAs. RECENT FINDINGS Studies in animal models, as well as human population-based studies, have established that prenatal and early life iAs exposures are associated with long-term effects, and many of these effects display sexually dimorphic responses. As an underlying molecular basis, recent epidemiologic and toxicologic studies have demonstrated that changes to the epigenome may play a key mechanistic role underlying many of the iAs-associated health outcomes. Developmental exposure to iAs results in early and later life health effects. Mechanisms underlying these outcomes are likely complex, and include disrupted key biological pathways with ties to the epigenome. This highlights the importance of continued research, particularly in animal models, to elucidate the important underpinnings (e.g., timing of exposure, metabolism, dose) of these complex health outcomes and to identify the biological mechanisms underlying sexual dimorphism in iAs-associated diseases. Future research should investigate preventative strategies for the protection from the detrimental health endpoints associated with early life exposure to iAs. Such strategies could include potential interventions focused on dietary supplementation for example the adoption of a folate-rich diet.
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Young JL, Cai L, States JC. Impact of prenatal arsenic exposure on chronic adult diseases. Syst Biol Reprod Med 2018; 64:469-483. [PMID: 29873257 PMCID: PMC6291241 DOI: 10.1080/19396368.2018.1480076] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/03/2018] [Accepted: 05/14/2018] [Indexed: 02/08/2023]
Abstract
Exposure to environmental stressors during susceptible windows of development can result in negative health outcomes later in life, a concept known as the Developmental Origins of Health and Disease (DOHaD). There is a growing body of evidence that exposures to metals early in life (in utero and postnatal) increase the risk of developing adult diseases such as cancer, cardiovascular disease, non-alcoholic fatty liver disease, and diabetes. Of particular concern is exposure to the metalloid arsenic, a drinking water contaminant and worldwide health concern. Epidemiological studies of areas with high levels of arsenic in the drinking water, such as some regions in Chile and Bangladesh, indicate an association between in utero arsenic exposure and the development of adult diseases. Therefore, the need for experimental models to address the mechanism underlining early onset of adult diseases have emerged including the in utero and whole-life exposure models. This review will highlight the epidemiological events and subsequent novel experimental models implemented to study the impact of early life exposure to arsenic on the development of adult diseases. In addition, current research using these models will be discussed as well as possible underlying mechanism for the early onset of disease. Abbreviations: ALT: alanine aminotransferase; AMI: acute myocardial infarction; AST: aspartate aminotransferase; ATSDR: Agency for Toxic Substances and Disease Registry; CVD: cardiovascular disease; DMA: dimethylarsinate; DOHaD: Developmental Origins of Health and Disease; EPA: U.S. Environmental Protection Agency; ER-α: estrogen receptor alpha; HDL: high-density lipoprotein; HOMA-IR: homeostatic model assessment of insulin resistance; iAs: inorganic arsenic; LDL: low-density lipoprotein; MetS: metabolic syndrome; MMA: monomethylarsonate; NAFLD: non-alcoholic fatty liver disease; PND: postnatal day; ppb: parts per billion; ppm: parts per million; SAM: S-adenosylmethionine; USFDA: United States Food and Drug Administration.
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Affiliation(s)
- Jamie L. Young
- Department of Pharmacology and Toxicology, University of Louisville, 505 S. Hancock St, Louisville, KY., 40202. USA Tel.: +1 502 852 2631.
| | - Lu Cai
- Pediatric Research Institute, Departments of Pediatrics, Radiation Oncology and pharmacology and Toxicology, University of Louisville, 570 S. Preston St, Room 304F, Louisville, KY., 40202. USA Tel,: +1 502 852 2214.
| | - J. Christopher States
- Department of Pharmacology and Toxicology, University of Louisville, 505 S. Hancock St, Room 304, Louisville, KY., 40202. USA Tel.: +1 502 852 5347.
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24
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Exposure to Arsenite in CD-1 Mice during Juvenile and Adult Stages: Effects on Intestinal Microbiota and Gut-Associated Immune Status. mBio 2018; 9:mBio.01418-18. [PMID: 30108172 PMCID: PMC6094480 DOI: 10.1128/mbio.01418-18] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Intestinal microbiota composition and gut-associated immune response can contribute to the toxicity of arsenic. We investigated the potential toxicity of short-term arsenic exposure on gut microbiome composition, intestinal immune status, microbial arsenic resistance gene, and arsenic metabolic profiles in adult and developmental stages of CD-1 mice. The potential toxicity of arsenite [As(III)] was determined for two life stages: (i) adult animals at 24 or 48 h after single gavage (0.05 mg/kg body weight [b.w.] [low dose], 0.1 mg/kg b.w. [medium dose], and 0.2 mg/kg b.w. [high dose]) and repeated exposure at 1 mg/liter for 8 days and (ii) postnatal day 10 (PND10) and PND21 after single gavage (0.05 mg/kg b.w.). Dose- and time-dependent responses in bacterial recovery/microbial composition were observed in adults after a single gavage. Repeated exposure caused a transient decrease in the recovery of intestinal bacteria, a shift in the bacterial population with abundance of arsenic resistance genes, and evidence for host metabolism of arsenite into less-reactive trivalent methylated species. Arsenic exposure in adult animals induced high levels of CC chemokines and of proinflammatory and anti-inflammatory cytokine secretion in intestine. Arsenic exposure at PND21 resulted in the development of distinct bacterial populations. Results of this study highlight significant changes in the intestinal microbiome and gut-associated immune status during a single or repeated exposure to arsenic in juvenile and adult animals. The data warrant investigation of the long-term effects of oral arsenic exposure on the microbiome and of immune system development and responses.IMPORTANCE Transformation of organic arsenic to toxic inorganic arsenic (iAs) is likely carried out by intestinal bacteria, and iAs may alter the viability of certain microbial populations. This study addressed the impact of arsenic exposure on intestinal microbiota diversity and host gut-associated immune mediators during early development or adulthood using scenarios of acute or repeated doses. During acute arsenic exposure, animals developed defense functions characterized by higher abundances of bacteria that are involved in arsenic resistance or detoxification mechanisms. Arsenite had a negative effect on the abundance of bacterial species that are involved in the conversion of protein to butyrate, which is an alternative energy source in the intestine. The intestinal mucosal immune cytokine profile reflected a mechanism of protection from arsenic toxicity.
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25
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Schwalfenberg G, Rodushkin I, Genuis SJ. Heavy metal contamination of prenatal vitamins. Toxicol Rep 2018; 5:390-395. [PMID: 29854609 PMCID: PMC5978005 DOI: 10.1016/j.toxrep.2018.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 02/25/2018] [Accepted: 02/27/2018] [Indexed: 12/18/2022] Open
Abstract
Toxic elements are found in prenatal vitamins with lead at unacceptable levels in more than half of the products tested. Arsenic is also found in some products at unsafe levels. Thallium is present at levels in some products that are not acceptable. Some products have very low level, which are safer, and recommendations are made to have industry (self regulatory) and government oversight to have the least contamination of prenatal vitamins.
Prenatal vitamins are often consumed daily during gestation and postnatally for up to 18–24 months with the belief that supplementation achieves better outcomes. Detrimental effects of gestational exposure to adverse chemical agents are gathering increasing attention. This study was designed to assess toxic element contamination in prenatal supplements. Twenty-six commonly used prenatal vitamin brands including one prescription brand were collected from Canadian health-food outlets and pharmacies, and tested for toxic element contamination. Results were compared to established endpoints. All samples contained Lead with average amounts being (0.535 μgm), 20/51 samples exceeded established standards for lead toxicity (0.50 μgm/day), with one sample yielding 4. μgm/day. Three samples registered inorganic arsenic levels above acceptable limits. Cadmium levels did not exceed current standards. Toxic elements such as Aluminum, Nickel, Titanium and Thallium were detected in all samples. Cumulative intake of prenatal supplement over many months may constitute a significant source of toxic element exposure to the mother and offspring. With several samples exceeding known standards for gestational toxic element exposure, guidelines for routine monitoring and reporting are required. In keeping with recommendations from the International Federation of Obstetrics and Gynecology, industry regulation would be welcomed to protect expectant mothers and their vulnerable offspring.
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Affiliation(s)
| | - Ilia Rodushkin
- Scandinavia Division of A.L.S. Laboratory Group, Sweden.,Luleå University of Technology, Sweden
| | - Stephen J Genuis
- Department of Obstetrics and Gynecology, University of Alberta, Canada
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26
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Ahangarpour A, Alboghobeish S, Oroojan AA, Zeidooni L, Samimi A, Afshari G. Effects of Combined Exposure to Chronic High-Fat Diet and Arsenic on Thyroid Function and Lipid Profile in Male Mouse. Biol Trace Elem Res 2018; 182:37-48. [PMID: 28593471 DOI: 10.1007/s12011-017-1068-1] [Citation(s) in RCA: 5] [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: 11/05/2016] [Accepted: 05/30/2017] [Indexed: 12/21/2022]
Abstract
The thyroid is one of the major endocrine glands that contribute to body and fat metabolism. The present study evaluated the effects of combined exposure to chronic high-fat diet (HFD) and arsenic on thyroid function and lipid profile. In this experimental study, 72 male Naval Medical Research Institute mice were divided into six groups and fed HFD or low-fat diet (LFD) while being exposed to 25 or 50 ppm of arsenic in drinking water for 20 weeks. After 24 h of the last experimental day, blood samples were collected for hormonal and biochemical measurements. The data indicated that exposure to HFD alone increased the levels of triiodothyronine (T3), thyroid-stimulating hormone (TSH), leptin, lipid profile, reactive oxygen species (ROS), and malondialdehyde (MDA) and decreased the levels of high-density lipoprotein, albumin, adiponectin, and glutathione sulfhydryl reductase (GSH), whereas exposure to arsenic alone decreased the levels of T3 and GSH and increased the levels of TSH, leptin, ROS, MDA, and T4/T3 ratio compared to those in the control LFD group. Furthermore, concomitant administration of HFD and arsenic decreased the lipid profile and levels of T4, albumin, total protein, T3, and GSH and increased the levels of TSH, adiponectin, leptin, ROS, MDA, and T4/T3 ratio compared to those in the control LFD or HFD group. In conclusion, combined exposure to HFD and arsenic induced hypothyroidism via reduction of thyroid hormones and enhancement of plasma TSH and T3 uptake levels concomitant with hypolipidemia, hyperleptinemia, hyperadiponectinemia, induction of oxidative stress, and reduction of GSH levels.
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Affiliation(s)
- Akram Ahangarpour
- Health Research Institute, Diabetes Research Center, Department of Physiology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Soheila Alboghobeish
- Department of Pharmacology, School of Medicine, Student Research Committee of Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Ali Akbar Oroojan
- Department of Physiology, Student Research Committee of Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
| | - Leila Zeidooni
- Department of Toxicology, School of Pharmacy, Student Research Committee of Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Azin Samimi
- Department of Toxicology, School of Pharmacy, Student Research Committee of Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Golshan Afshari
- Golestan Hospital Clinical Research Development Unit, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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27
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Kirkley AG, Carmean CM, Ruiz D, Ye H, Regnier SM, Poudel A, Hara M, Kamau W, Johnson DN, Roberts AA, Parsons PJ, Seino S, Sargis RM. Arsenic exposure induces glucose intolerance and alters global energy metabolism. Am J Physiol Regul Integr Comp Physiol 2018; 314:R294-R303. [PMID: 29118024 PMCID: PMC5867677 DOI: 10.1152/ajpregu.00522.2016] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 12/15/2022]
Abstract
Environmental pollutants acting as endocrine-disrupting chemicals (EDCs) are recognized as potential contributors to metabolic disease pathogenesis. One such pollutant, arsenic, contaminates the drinking water of ~100 million people globally and has been associated with insulin resistance and diabetes in epidemiological studies. Despite these observations, the precise metabolic derangements induced by arsenic remain incompletely characterized. In the present study, the impact of arsenic on in vivo metabolic physiology was examined in 8-wk-old male C57BL/6J mice exposed to 50 mg/l inorganic arsenite in their drinking water for 8 wk. Glucose metabolism was assessed via in vivo metabolic testing, and feeding behavior was analyzed using indirect calorimetry in metabolic cages. Pancreatic islet composition was assessed via immunofluorescence microscopy. Arsenic-exposed mice exhibited impaired glucose tolerance compared with controls; however, no difference in peripheral insulin resistance was noted between groups. Instead, early insulin release during glucose challenge was attenuated relative to the rise in glycemia. Despite decreased insulin secretion, pancreatic β-cell mass was not altered, suggesting that arsenic primarily disrupts β-cell function. Finally, metabolic cage analyses revealed that arsenic exposure induced novel alterations in the diurnal rhythm of food intake and energy metabolism. Taken together, these data suggest that arsenic exposure impairs glucose tolerance through functional impairments in insulin secretion from β-cells rather than by augmenting peripheral insulin resistance. Further elucidation of the mechanisms underlying arsenic-induced behavioral and β-cell-specific metabolic disruptions will inform future intervention strategies to address this ubiquitous environmental contaminant and novel diabetes risk factor.
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Affiliation(s)
- Andrew G Kirkley
- Committee on Molecular Pathogenesis and Molecular Medicine, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | - Christopher M Carmean
- Division of Molecular and Metabolic Medicine, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine , Kobe , Japan
| | - Daniel Ruiz
- Committee on Molecular Metabolism and Nutrition, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | - Honggang Ye
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | - Shane M Regnier
- Committee on Molecular Metabolism and Nutrition, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | - Ananta Poudel
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | - Manami Hara
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Chicago , Chicago, Illinois
- University of Chicago , Chicago, Illinois
| | | | | | - Austin A Roberts
- Division of Environmental Health Sciences, Wadsworth Center, New York State Department of Health , Albany, New York
- Department of Environmental Health Sciences, The University at Albany, State University of New York , Albany, New York
| | - Patrick J Parsons
- Division of Environmental Health Sciences, Wadsworth Center, New York State Department of Health , Albany, New York
- Department of Environmental Health Sciences, The University at Albany, State University of New York , Albany, New York
| | - Susumu Seino
- Division of Molecular and Metabolic Medicine, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine , Kobe , Japan
| | - Robert M Sargis
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Illinois at Chicago , Chicago, Illinois
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28
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Ahangarpour A, Zeidooni L, Samimi A, Alboghobeish S, Khorsandi LS, Moradi M. Chronic exposure to arsenic and high fat diet additively induced cardiotoxicity in male mice. Res Pharm Sci 2018; 13:47-56. [PMID: 29387111 PMCID: PMC5772081 DOI: 10.4103/1735-5362.220967] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Diet is one of the important risk factors that could potentially affect arsenic-induced cardiotoxicity. The present study was undertaken to investigate the effect of high fat diet on arsenic-induced cardiotoxicity in mice. Mice were divided into six different groups (n = 12), two control groups received either low fat diet (LFD) or high fat diet (HFD) along with deionized drinking water and four test groups given LFD + 25 ppm arsenic, LFD + 50 ppm arsenic, HFD + 25 ppm arsenic, and HFD + 50 ppm arsenic in drinking water for 5 months. The body weight, heart weight to body weight ratio, cardiac biochemical markers, lipid profile, and histological examination of heart were evaluated. The results demonstrated that arsenic exposure led to a significant decrease in heart glutathione level, catalase enzyme activity, and a significant increase in reactive oxygen species (ROS), malondialdehyde levels, and biochemical enzymes. The administration of HFD resulted in above-mentioned changes as well as an alteration in lipid profile; however, arsenic exposure alone or along with HFD caused a reduction in lipid profile factors, except HDL level. Our results revealed that HFD increased arsenic-induced heart injury in the mice. This effect may be because of reduction in antioxidant activities and/or increase in oxidative stress and ROS in mice heart tissues. These findings could be important for clinical intervention to protect against or prevent arsenic-induced cardiotoxicity in humans.
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Affiliation(s)
- Akram Ahangarpour
- Health Research Institute, Diabetes Research Center, Department of Physiology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
| | - Leila Zeidooni
- Department of Toxicology and Student Research Committee, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
| | - Azin Samimi
- Department of Toxicology and Student Research Committee, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
| | - Soheila Alboghobeish
- Department of Pharmacology and Student Research Committee, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
| | - Laya Sadat Khorsandi
- Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
| | - Mitra Moradi
- Health Research Institute, Diabetes Research Center, Department of Physiology, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, I.R. Iran
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29
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Tocopherol and selenite modulate the transplacental effects induced by sodium arsenite in hamsters. Reprod Toxicol 2017; 74:204-211. [DOI: 10.1016/j.reprotox.2017.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 09/22/2017] [Accepted: 10/17/2017] [Indexed: 11/20/2022]
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30
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Martin EM, Stýblo M, Fry RC. Genetic and epigenetic mechanisms underlying arsenic-associated diabetes mellitus: a perspective of the current evidence. Epigenomics 2017; 9:701-710. [PMID: 28470093 DOI: 10.2217/epi-2016-0097] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Chronic exposure to arsenic has been associated with the development of diabetes mellitus (DM), a disease characterized by hyperglycemia resulting from dysregulation of glucose homeostasis. This review summarizes four major mechanisms by which arsenic induces diabetes, namely inhibition of insulin-dependent glucose uptake, pancreatic β-cell damage, pancreatic β-cell dysfunction and stimulation of liver gluconeogenesis that are supported by both in vivo and in vitro studies. Additionally, the role of polymorphic variants associated with arsenic toxicity and disease susceptibility, as well as epigenetic modifications associated with arsenic exposure, are considered in the context of arsenic-associated DM. Taken together, in vitro, in vivo and human genetic/epigenetic studies support that arsenic has the potential to induce DM phenotypes and impair key pathways involved in the regulation of glucose homeostasis.
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Affiliation(s)
- Elizabeth M Martin
- Department of Environmental Sciences & Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Miroslav Stýblo
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Curriculum of Toxicology, University of North Carolina, Chapel Hill, NC, USA
| | - Rebecca C Fry
- Department of Environmental Sciences & Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.,Curriculum of Toxicology, University of North Carolina, Chapel Hill, NC, USA
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31
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Identification of potential target genes of ROR-alpha in THP1 and HUVEC cell lines. Exp Cell Res 2017; 353:6-15. [PMID: 28238834 DOI: 10.1016/j.yexcr.2017.02.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 01/31/2017] [Accepted: 02/19/2017] [Indexed: 02/04/2023]
Abstract
ROR-alpha is a nuclear receptor, activity of which can be modulated by natural or synthetic ligands. Due to its possible involvement in, and potential therapeutic target for atherosclerosis, we aimed to identify ROR-alpha target genes in monocytic and endothelial cell lines. We performed chromatin immunoprecipitation (ChIP) followed by tiling array (ChIP-on-chip) for ROR-alpha in monocytic cell line THP1 and endothelial cell line HUVEC. Following bioinformatic analysis of the array data, we tested four candidate genes in terms of dependence of their expression level on ligand-mediated ROR-alpha activity, and two of them in terms of promoter occupancy by ROR-alpha. Bioinformatic analyses of ChIP-on-chip data suggested that ROR-alpha binds to genomic regions near the transcription start site (TSS) of more than 3000 genes in THP1 and HUVEC. Potential ROR-alpha target genes in both cell types seem to be involved mainly in membrane receptor activity, signal transduction and ion transport. While SPP1 and IKBKA were shown to be direct target genes of ROR-alpha in THP1 monocytes, inflammation related gene HMOX1 and heat shock protein gene HSPA8 were shown to be potential target genes of ROR-alpha. Our results suggest that ROR-alpha may regulate signaling receptor activity, and transmembrane transport activity through its potential target genes. ROR-alpha seems also to play role in cellular sensitivity to environmental substances like arsenite and chloroprene. Although, the expression analyses have shown that synthetic ROR-alpha ligands can modulate some of potential ROR-alpha target genes, functional significance of ligand-dependent modulation of gene expression needs to be confirmed with further analyses.
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32
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Wang L, Ke J, Li Y, Ma Q, Dasgupta C, Huang X, Zhang L, Xiao D. Inhibition of miRNA-210 reverses nicotine-induced brain hypoxic-ischemic injury in neonatal rats. Int J Biol Sci 2017; 13:76-84. [PMID: 28123348 PMCID: PMC5264263 DOI: 10.7150/ijbs.17278] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 09/27/2016] [Indexed: 01/19/2023] Open
Abstract
Maternal tobacco use in pregnancy increases the risk of neurodevelopmental disorders and neurobehavioral deficits in postnatal life. The present study tested the hypothesis that perinatal nicotine exposure exacerbated brain vulnerability to hypoxic-ischemic (HI) injury in neonatal rats through up-regulation of miR-210 expression in the developing brain. Nicotine was administered to pregnant rats via subcutaneous osmotic minipumps. Experiments of HI brain injury were performed in 10-day-old pups. Perinatal nicotine treatment significantly decreased neonatal body and brain weights, but increased the brain to body weight ratio. Perinatal nicotine exposure caused a significant increase in HI brain infarct size in the neonates. In addition, nicotine enhanced miR-210 expression and significantly attenuated brain-derived neurotrophic factor (BDNF) and tropomyosin-related kinase isoform B (TrkB) protein abundance in the brain. Of importance, intracerebroventricular administration of a miR-210 inhibitor (miR-210-LNA) significantly decreased HI-induced brain infarct size and reversed the nicotine-increased vulnerability to brain HI injury in the neonate. Furthermore, miR-210-LNA treatment also reversed nicotine-mediated down-regulation of BDNF and TrkB protein expression in the neonatal brains. These findings provide novel evidence that the increased miR-210 plays a causal role in perinatal nicotine-induced developmental programming of ischemic sensitive phenotype in the brain. It represents a potential novel therapeutic approach for treatment of brain hypoxic-ischemic encephalopathy in the neonate-induced by fetal stress.
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Affiliation(s)
- Lei Wang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA.; Department of Traditional Chinese Medicine, Shanghai Putuo District People's Hospital, Shanghai, China
| | - Jun Ke
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA.; Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Yong Li
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Qinyi Ma
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Chiranjib Dasgupta
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Xiaohui Huang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - Lubo Zhang
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
| | - DaLiao Xiao
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California, USA
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Abstract
As manufacturing processes and development of new synthetic compounds increase to keep pace with the expanding global demand, environmental health, and the effects of toxicant exposure are emerging as critical public health concerns. Additionally, chemicals that naturally occur in the environment, such as metals, have profound effects on human and animal health. Many of these compounds are in the news: lead, arsenic, and endocrine disruptors such as bisphenol A have all been widely publicized as causing disease or damage to humans and wildlife in recent years. Despite the widespread appreciation that environmental toxins can be harmful, there is limited understanding of how many toxins cause disease. Zebrafish are at the forefront of toxicology research; this system has been widely used as a tool to detect toxins in water samples and to investigate the mechanisms of action of environmental toxins and their related diseases. The benefits of zebrafish for studying vertebrate development are equally useful for studying teratogens. Here, we review how zebrafish are being used both to detect the presence of some toxins as well as to identify how environmental exposures affect human health and disease. We focus on areas where zebrafish have been most effectively used in ecotoxicology and in environmental health, including investigation of exposures to endocrine disruptors, industrial waste byproducts, and arsenic.
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Affiliation(s)
- Kathryn Bambino
- Icahn School of Medicine at Mount Sinai, New York, United States
| | - Jaime Chu
- Icahn School of Medicine at Mount Sinai, New York, United States.
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Bommarito PA, Fry RC. Developmental Windows of Susceptibility to Inorganic Arsenic: A Survey of Current Toxicologic and Epidemiologic Data. Toxicol Res (Camb) 2016; 5:1503-1511. [PMID: 29354260 PMCID: PMC5771659 DOI: 10.1039/c6tx00234j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 09/15/2016] [Indexed: 01/15/2023] Open
Abstract
Globally, millions of people are exposed to elevated levels of inorganic arsenic (iAs) via drinking water. Exposure to iAs is associated with a wide range of negative health outcomes, including cancers, skin lesions, neurological impairment, cardiovascular diseases, and an increased susceptibility to infection. Among those exposed to iAs, the developing fetus and young children represent particularly sensitive subpopulations. Specifically, it has been noted in animal models and human populations that prenatal and early life iAs exposures are associated with diseases occurring during childhood and later in life. Recent epidemiologic and toxicologic studies have also demonstrated that epigenetic alterations may play a key mechanistic role underlying many of the iAs-associated health outcomes, including the carcinogenic and immunologic effects of exposure. This review summarizes some of the key studies related to prenatal and early life iAs exposure and highlights the complexities in isolating the precise developmental windows of exposure associated with these health outcomes.
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Affiliation(s)
- P. A. Bommarito
- Department of Environmental Sciences and Engineering
, Gillings School of Global Public Health
, University of North Carolina
,
Chapel Hill
, North Carolina
, USA
.
| | - R. C. Fry
- Department of Environmental Sciences and Engineering
, Gillings School of Global Public Health
, University of North Carolina
,
Chapel Hill
, North Carolina
, USA
.
- Curriculum in Toxicology
, School of Medicine
, University of North Carolina
,
Chapel Hill
, North Carolina
, USA
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35
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Bao MH, Luo HQ, Chen LH, Tang L, Ma KF, Xiang J, Dong LP, Zeng J, Li GY, Li JM. Impact of high fat diet on long non-coding RNAs and messenger RNAs expression in the aortas of ApoE(-/-) mice. Sci Rep 2016; 6:34161. [PMID: 27698357 PMCID: PMC5048419 DOI: 10.1038/srep34161] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 09/07/2016] [Indexed: 12/13/2022] Open
Abstract
Atherosclerosis is a chronic multifactorial inflammatory disease with high prevalence worldwide, and has become the leading cause of death. The present study was designed to investigate the impact of high-fat diet on ApoE(−/−) mice exhibiting atherosclerosis by detecting the genome-wide expression profile of lncRNAs and mRNAs. A total of 354 differentially expressed lncRNAs were identified (≥2.0 folds). Simultaneously, 357 differentially expressed mRNAs from the same chip were found. The expression differences of lncRNAs and mRNAs were consistent in both qPCR and microarray detection. Annotation results of the mRNAs which correlated with lncRNAs showed that the commonly related pathways were metabolism and inflammation. Hypergeometric distribution analysis indicated that the differentially expressed lncRNAs had been mostly regulated by transcription factors (TFs) such as Myod1, Rxra, Pparg, Tcf3, etc. Additional lncRNA-target-TFs network analysis was conducted for the top 20 differentially expressed lncRNAs. The results indicated Hnf4a, Ppara, Vdr, and Runx3 as the TFs most likely to regulate the production of these lncRNAs, and might play roles in inflammatory and metabolic processes in atherosclerosis. In a nutshell, the present study identified a panel of dysregulated lncRNAs and mRNAs that may be potential biomarkers or drug targets relevant to the high-fat diet related atherogenesis.
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Affiliation(s)
- Mei-Hua Bao
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Huai-Qing Luo
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Li-Hua Chen
- The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, PR China
| | - Liang Tang
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Kui-Fen Ma
- The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, PR China
| | - Ju Xiang
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Li-Ping Dong
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Jie Zeng
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Guang-Yi Li
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China
| | - Jian-Ming Li
- Department of Anatomy, Histology and Embryology, Institute of of Neuroscience, Changsha Medical University, Changsha, 410219, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.,Department of Anatomy, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
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36
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Ditzel EJ, Nguyen T, Parker P, Camenisch TD. Effects of Arsenite Exposure during Fetal Development on Energy Metabolism and Susceptibility to Diet-Induced Fatty Liver Disease in Male Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:201-9. [PMID: 26151952 PMCID: PMC4749082 DOI: 10.1289/ehp.1409501] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 07/02/2015] [Indexed: 05/02/2023]
Abstract
BACKGROUND Chronic exposure to arsenicals at various life stages and across a range of exposures has been implicated in cardiometabolic and liver disease, but disease predisposition from developmental exposures remains unclear. OBJECTIVES In utero and post-weaning exposure to trivalent arsenic (AsIII) was examined on the background of a Western-style diet to determine whether AsIII exposure affects metabolic disease. METHODS Male Swiss Webster mice were exposed to 100 ppb AsIII in utero, after weaning, or both. Ad libitum access to a Western-style diet was provided after weaning, and the plasma metabolome, liver histopathology, liver enzyme activity, and gene expression were analyzed. RESULTS Hepatic lipid composition and histopathology revealed that developmental AsIII exposure exacerbated Western-style diet-induced fatty liver disease. Continuous AsIII exposure increased cardiometabolic risk factors including increased body weight, insulin resistance, hyperglycemia, and plasma triglycerides. AsIII exposure produced a decrease in the intermediates of glycolysis and the TCA cycle while increasing ketones. Hepatic isocitrate dehydrogenase activity was also decreased, which confirmed disruption of the TCA cycle. Developmental AsIII exposure increased the expression of genes involved in fatty acid synthesis, lipogenesis, inflammation, and packaging of triglycerides, suggesting an increased acetyl coenzyme A (acetyl-CoA) load. CONCLUSIONS In utero and continuous early-life exposure to AsIII disrupted normal metabolism and elevated the risk for fatty liver disease in mice maintained on a high-fat diet. Our findings suggest that individuals exposed to AsIII during key developmental periods and who remain exposed to AsIII on the background of a Western-style diet may be at increased risk for metabolic disease later in life.
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Affiliation(s)
- Eric J. Ditzel
- Department of Pharmacology and Toxicology, College of Pharmacy,
| | - Thu Nguyen
- Department of Pharmacology and Toxicology, College of Pharmacy,
| | - Patricia Parker
- Department of Pharmacology and Toxicology, College of Pharmacy,
| | - Todd D. Camenisch
- Department of Pharmacology and Toxicology, College of Pharmacy,
- Steele Children’s Research Center,
- Southwest Environmental Health Sciences Center,
- Sarver Heart Center, and
- Bio5 Institute, University of Arizona, Tucson, Arizona, USA
- Address correspondence to T.D. Camenisch, 1703 E. Mabel St., P.O. Box 210207, Tucson, AZ 85721 USA. Telephone: (520) 626-0240. E-mail:
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37
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Bailey KA, Smith AH, Tokar EJ, Graziano JH, Kim KW, Navasumrit P, Ruchirawat M, Thiantanawat A, Suk WA, Fry RC. Mechanisms Underlying Latent Disease Risk Associated with Early-Life Arsenic Exposure: Current Research Trends and Scientific Gaps. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:170-5. [PMID: 26115410 PMCID: PMC4749078 DOI: 10.1289/ehp.1409360] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 06/23/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Millions of individuals worldwide, particularly those living in rural and developing areas, are exposed to harmful levels of inorganic arsenic (iAs) in their drinking water. Inorganic As exposure during key developmental periods is associated with a variety of adverse health effects, including those that are evident in adulthood. There is considerable interest in identifying the molecular mechanisms that relate early-life iAs exposure to the development of these latent diseases, particularly in relationship to cancer. OBJECTIVES This work summarizes research on the molecular mechanisms that underlie the increased risk of cancer development in adulthood that is associated with early-life iAs exposure. DISCUSSION Epigenetic reprogramming that imparts functional changes in gene expression, the development of cancer stem cells, and immunomodulation are plausible underlying mechanisms by which early-life iAs exposure elicits latent carcinogenic effects. CONCLUSIONS Evidence is mounting that relates early-life iAs exposure and cancer development later in life. Future research should include animal studies that address mechanistic hypotheses and studies of human populations that integrate early-life exposure, molecular alterations, and latent disease outcomes.
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Affiliation(s)
- Kathryn A. Bailey
- Department of Environmental Sciences and Engineering, UNC Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | - Allan H. Smith
- Arsenic Health Effects Research Program, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Erik J. Tokar
- National Toxicology Program, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | - Joseph H. Graziano
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
| | - Kyoung-Woong Kim
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Panida Navasumrit
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - Mathuros Ruchirawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - Apinya Thiantanawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - William A. Suk
- Superfund Research Program, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Rebecca C. Fry
- Department of Environmental Sciences and Engineering, UNC Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
- Address correspondence to R.C. Fry, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, 135 Dauer Dr., CB 7431, University of North Carolina, Chapel Hill, NC 27599-7295 USA. Telephone: (919) 843-6864. E-mail:
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38
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Barrett JR. Arsenic Exposure and the Western Diet: A Recipe for Metabolic Disorders? ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:A39. [PMID: 26829820 PMCID: PMC4749074 DOI: 10.1289/ehp.124-a39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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39
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Abstract
Environmental exposure is an important but underappreciated risk factor contributing to the development and severity of cardiovascular disease (CVD). The heart and vascular system are highly vulnerable to a number of environmental agents--ambient air pollution and the metals arsenic, cadmium, and lead are widespread and the most-extensively studied. Like traditional risk factors, such as smoking and diabetes mellitus, these exposures advance disease and mortality via augmentation or initiation of pathophysiological processes associated with CVD, including blood-pressure control, carbohydrate and lipid metabolism, vascular function, and atherogenesis. Although residence in highly polluted areas is associated with high levels of cardiovascular risk, adverse effects on cardiovascular health also occur at exposure levels below current regulatory standards. Considering the widespread prevalence of exposure, even modest contributions to CVD risk can have a substantial effect on population health. Evidence-based clinical and public-health strategies aimed at reducing environmental exposures from current levels could substantially lower the burden of CVD-related death and disability worldwide.
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40
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Broka D, Ditzel E, Quach S, Camenisch TD. Methylation of inorganic arsenic by murine fetal tissue explants. Drug Chem Toxicol 2015; 39:279-83. [PMID: 26446802 DOI: 10.3109/01480545.2015.1092043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Although it is generally believed that the developing fetus is principally exposed to inorganic arsenic and the methylated metabolites from the maternal metabolism of arsenic, little is known about whether the developing embryo can autonomously metabolize arsenic. This study investigates inorganic arsenic methylation by murine embryonic organ cultures of the heart, lung, and liver. mRNA for AS3mt, the gene responsible for methylation of arsenic, was detected in all embryonic tissue types studied. In addition, methylated arsenic metabolites were generated by all three tissue types. The fetal liver explants yielded the most methylated arsenic metabolites (∼7% of total arsenic/48 h incubation) while the heart, and lung preparations produced slightly greater than 2% methylated metabolites. With all tissues the methylation proceeded mostly to the dimethylated arsenic species. This has profound implications for understanding arsenic-induced fetal toxicity, particularly if the methylated metabolites are produced autonomously by embryonic tissues.
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Affiliation(s)
- Derrick Broka
- a Department of Pharmacology and Toxicology , Molecular and Cellular Biology, Bio5 Institute, and Southwest Environmental Health Sciences Center, University of Arizona , Tucson , AZ , USA
| | - Eric Ditzel
- a Department of Pharmacology and Toxicology , Molecular and Cellular Biology, Bio5 Institute, and Southwest Environmental Health Sciences Center, University of Arizona , Tucson , AZ , USA
| | - Stephanie Quach
- a Department of Pharmacology and Toxicology , Molecular and Cellular Biology, Bio5 Institute, and Southwest Environmental Health Sciences Center, University of Arizona , Tucson , AZ , USA
| | - Todd D Camenisch
- a Department of Pharmacology and Toxicology , Molecular and Cellular Biology, Bio5 Institute, and Southwest Environmental Health Sciences Center, University of Arizona , Tucson , AZ , USA
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41
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Prenatal Exposure to Sodium Arsenite Alters Placental Glucose 1, 3, and 4 Transporters in Balb/c Mice. BIOMED RESEARCH INTERNATIONAL 2015; 2015:175025. [PMID: 26339590 PMCID: PMC4538324 DOI: 10.1155/2015/175025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 04/17/2015] [Indexed: 12/15/2022]
Abstract
Inorganic arsenic (iAs) exposure induces a decrease in glucose type 4 transporter (GLUT4) expression on the adipocyte membrane, which may be related to premature births and low birth weight infants in women exposed to iAs at reproductive age. The aim of this study was to analyze the effect of sodium arsenite (NaAsO2) exposure on GLUT1, GLUT3, and GLUT4 protein expression and on placental morphology. Female Balb/c mice (n = 15) were exposed to 0, 12, and 20 ppm of NaAsO2 in drinking water from 8th to 18th day of gestation. Morphological changes and GLUT1, GLUT3, and GLUT4 expression were evaluated in placentas by immunohistochemical and image analysis and correlated with iAs and arsenical species concentration, which were quantified by atomic absorption spectroscopy. NaAsO2 exposure induced a significant decrease in fetal and placental weight (P < 0.01) and increases in infarctions and vascular congestion. Whereas GLUT1 expression was unchanged in placentas from exposed group, GLUT3 expression was found increased. In contrast, GLUT4 expression was significantly lower (P < 0.05) in placentas from females exposed to 12 ppm. The decrease in placental GLUT4 expression might affect the provision of adequate fetal nutrition and explain the low fetal weight observed in the exposed groups.
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42
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Mechanisms of action for arsenic in cardiovascular toxicity and implications for risk assessment. Toxicology 2015; 331:78-99. [PMID: 25771173 DOI: 10.1016/j.tox.2015.02.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 02/09/2015] [Accepted: 02/27/2015] [Indexed: 11/20/2022]
Abstract
The possibility of an association between inorganic arsenic (iAs) exposure and cardiovascular outcomes has received increasing attention in the literature over the past decade. The United States Environmental Protection Agency (US EPA) is currently revising its Integrated Risk Assessment System (IRIS) review of iAs, and one of the non-cancer endpoints of interest is cardiovascular disease (CVD). Despite the increased interest in this area, substantial gaps remain in the available information, particularly regarding the mechanism of action (MOA) by which iAs could cause or exacerbate CVD. Few studies specifically address the plausibility of an association between iAs and CVD at the low exposure levels which are typical in the United States (i.e., below 100 μg As/L in drinking water). We have conducted a review and evaluation of the animal, mechanistic, and human data relevant to the potential MOAs of iAs and CVD. Specifically, we evaluated the most common proposed MOAs, which include disturbance of endothelial function and hepatic dysfunction. Our analysis of the available evidence indicates that there is not a well-established MOA for iAs in the development or progression of CVD. Few human studies of the potential MOAs have addressed plausibility at low doses and the applicability of extrapolation from animal studies to humans is questionable. However, the available evidence indicates that regardless of the specific MOA, the effects of iAs on physiological processes at the cellular level appear to operate via a threshold mechanism. This finding is consistent with the lack of association of CVD with iAs exposure in humans at levels below 100 μg/L, particularly when considering important exposure and risk modifiers such as nutrition and genetics. Based on this analysis, we conclude that there are no data supporting a linear dose-response relationship between iAs and CVD, indicating this relationship has a threshold.
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43
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Spade DJ, McDonnell EV, Heger NE, Sanders JA, Saffarini CM, Gruppuso PA, De Paepe ME, Boekelheide K. Xenotransplantation models to study the effects of toxicants on human fetal tissues. ACTA ACUST UNITED AC 2014; 101:410-22. [PMID: 25477288 DOI: 10.1002/bdrb.21131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 10/14/2014] [Indexed: 12/11/2022]
Abstract
Many diseases that manifest throughout the lifetime are influenced by factors affecting fetal development. Fetal exposure to xenobiotics, in particular, may influence the development of adult diseases. Established animal models provide systems for characterizing both developmental biology and developmental toxicology. However, animal model systems do not allow researchers to assess the mechanistic effects of toxicants on developing human tissue. Human fetal tissue xenotransplantation models have recently been implemented to provide human-relevant mechanistic data on the many tissue-level functions that may be affected by fetal exposure to toxicants. This review describes the development of human fetal tissue xenotransplant models for testis, prostate, lung, liver, and adipose tissue, aimed at studying the effects of xenobiotics on tissue development, including implications for testicular dysgenesis, prostate disease, lung disease, and metabolic syndrome. The mechanistic data obtained from these models can complement data from epidemiology, traditional animal models, and in vitro studies to quantify the risks of toxicant exposures during human development.
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Affiliation(s)
- Daniel J Spade
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island
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44
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Lin M, Zhao L, Zhao W, Weng J. Dissecting the mechanism of carotid atherosclerosis from the perspective of regulation. Int J Mol Med 2014; 34:1458-66. [PMID: 25318463 PMCID: PMC4214333 DOI: 10.3892/ijmm.2014.1960] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 08/28/2014] [Indexed: 01/26/2023] Open
Abstract
Carotid atherosclerosis is a chronic inflammatory disease of the arterial wall. The present study aimed to identify changes in the gene expression and regulatory factors for atherosclerotic plaques of carotid atherosclerosis from an early to an advanced stage. The original data were downloaded from the NCBI GEO database under accession no. GSE28829. Differentially expressed genes (DEGs) were detected by the Robust Multiarray Average (RMA). The enriched Gene Ontology (GO) terms and pathways for DEGs using DAVID were subsequently identified. The transcriptional and microRNA (miRNA) regulatory network were constructed for the DEGs. Cis-regulatory signals were also investigated. More genes were activated in the advanced stage compared with the early stage. IGHG1 and SPP1 were upregulated, while MYBL1 and PLD were downregulated. The upregulated genes in the advanced stage were involved in atherosclerosis‑related GO terms such as immune, vascular and cell movement homeostasis. The DEGs were significantly enriched in cell adhesion molecules (CAMs) and the focal adhesion pathway. MMP9 and CFL2 played key roles in the transcriptional regulatory network. Moreover, miR-328 was identified as one of the hubs in the miRNA regulatory network. The results may therefore be used to determine the mechanism involved in carotid atherosclerosis.
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Affiliation(s)
- Min Lin
- Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou 350025, P.R. China
| | - Lin Zhao
- Department of Neurosurgery, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou 350025, P.R. China
| | - Wenlong Zhao
- Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou 350025, P.R. China
| | - Jing Weng
- Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou 350025, P.R. China
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45
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Kile ML, Houseman EA, Baccarelli AA, Quamruzzaman Q, Rahman M, Mostofa G, Cardenas A, Wright RO, Christiani DC. Effect of prenatal arsenic exposure on DNA methylation and leukocyte subpopulations in cord blood. Epigenetics 2014; 9:774-82. [PMID: 24525453 DOI: 10.4161/epi.28153] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Prenatal arsenic exposure is associated with increased risk of disease in adulthood. This has led to considerable interest in arsenic's ability to disrupt fetal programming. Many studies report that arsenic exposure alters DNA methylation in whole blood but these studies did not adjust for cell mixture. In this study, we examined the relationship between arsenic in maternal drinking water collected ≤ 16 weeks gestational age and DNA methylation in cord blood (n = 44) adjusting for leukocyte-tagged differentially methylated regions. DNA methylation was quantified using the Infinium HumanMethylation 450 BeadChip array. Recursively partitioned mixture modeling examined the relationship between arsenic and methylation at 473,844 CpG sites. Median arsenic concentration in water was 12 µg/L (range<1- 510 µg/L). Log 10 arsenic was associated with altered DNA methylation across the epigenome (P = 0.002); however, adjusting for leukocyte distributions attenuated this association (P = 0.013). We also observed that arsenic had a strong effect on the distribution of leukocytes in cord blood. In adjusted models, every log 10 increase in maternal drinking water arsenic exposure was estimated to increase CD8+ T cells by 7.4% (P = 0.0004) and decrease in CD4+ T cells by 9.2% (P = 0.0002). These results show that prenatal exposure to arsenic had an exposure-dependent effect on specific T cell subpopulations in cord blood and altered DNA methylation in cord blood. Future research is needed to determine if these small changes in DNA methylation alter gene expression or are associated with adverse health effects.
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Affiliation(s)
- Molly L Kile
- Oregon State University; College of Public Health and Human Sciences; Corvallis, OR USA
| | - E Andres Houseman
- Oregon State University; College of Public Health and Human Sciences; Corvallis, OR USA
| | | | | | | | | | - Andres Cardenas
- Oregon State University; College of Public Health and Human Sciences; Corvallis, OR USA
| | - Robert O Wright
- Preventative Medicine and Pediatrics; Mt Sinai School of Medicine; New York, NY USA
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46
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Siddeek B, Inoubli L, Lakhdari N, Rachel PB, Fussell KC, Schneider S, Mauduit C, Benahmed M. MicroRNAs as potential biomarkers in diseases and toxicology. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2014; 764-765:46-57. [PMID: 24486656 DOI: 10.1016/j.mrgentox.2014.01.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 01/20/2014] [Accepted: 01/20/2014] [Indexed: 02/06/2023]
Abstract
MiRNAs (microRNAs) are single-stranded non-coding RNAs of approximately 21-23 nucleotides in length whose main function is to inhibit gene expression by interfering with mRNA processes. MicroRNAs suppress gene expression by affecting mRNA (messenger RNAs) stability, targeting the mRNA for degradation, or both. In this review, we have examined how microRNA expression could be altered following exposure to chemicals and how they could represent appropriate tissue and more interestingly circulating biomarkers. Among the key questions before using the microRNA for evaluation of risk toxicity, it remains still to clarify how they could be causally involved in the adverse effects and how stable their changes are.
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Affiliation(s)
- Bénazir Siddeek
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France; BASF Agro, Ecully F-69130, France
| | - Lilia Inoubli
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France
| | - Nadjem Lakhdari
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France
| | - Paul Bellon Rachel
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France
| | | | - Steffen Schneider
- BASF SE, experimental toxicology and ecology, 67056 Ludwigshafen, Germany
| | - Claire Mauduit
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France; Université Lyon 1, UFR Médecine Lyon Sud, Lyon, F-69921, France; Hospices Civils de Lyon, Hôpital Lyon Sud, laboratoire d'anatomie et de cytologie pathologiques, Pierre-Bénite, F-69495, France
| | - Mohamed Benahmed
- Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Team 5, Nice, F-06204, France; Université de Nice Sophia-Antipolis, UFR Médecine, Nice, F-06000, France; Centre Hospitalier Universitaire de Nice, Pôle Digestif, Gynécologie, Obstetrique, Centre de Reproduction, Nice, F-06202, France.
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47
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Shi X, Wei X, Koo I, Schmidt RH, Yin X, Kim SH, Vaughn A, McClain CJ, Arteel GE, Zhang X, Watson WH. Metabolomic analysis of the effects of chronic arsenic exposure in a mouse model of diet-induced Fatty liver disease. J Proteome Res 2013; 13:547-554. [PMID: 24328084 DOI: 10.1021/pr400719u] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Arsenic is a widely distributed environmental component that is associated with a variety of cancer and non-cancer adverse health effects. Additional lifestyle factors, such as diet, contribute to the manifestation of disease. Recently, arsenic was found to increase inflammation and liver injury in a dietary model of fatty liver disease. The purpose of the present study was to investigate potential mechanisms of this diet-environment interaction via a high-throughput metabolomics approach. GC×GC-TOF MS was used to identify metabolites that were significantly increased or decreased in the livers of mice fed a Western diet (a diet high in fat and cholesterol) and co-exposed to arsenic-contaminated drinking water. The results showed that there are distinct hepatic metabolomic profiles associated with eating a high fat diet, drinking arsenic-contaminated water, and the combination of the two. Among the metabolites that were decreased when arsenic exposure was combined with a high fat diet were short-chain and medium-chain fatty acid metabolites and the anti-inflammatory amino acid, glycine. These results are consistent with the observed increase in inflammation and cell death in the livers of these mice and point to potentially novel mechanisms by which these metabolic pathways could be altered by arsenic in the context of diet-induced fatty liver disease.
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Affiliation(s)
- Xue Shi
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Xiaoli Wei
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Imhoi Koo
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Robin H Schmidt
- Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY 40292.,Department of Alcohol Research Center, University of Louisville, Louisville, KY 40292
| | - Xinmin Yin
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Seong Ho Kim
- Biostatistics Core, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI 48201
| | - Andrew Vaughn
- Department of Medicine, University of Louisville, Louisville, KY 40292
| | - Craig J McClain
- Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY 40292.,Department of Alcohol Research Center, University of Louisville, Louisville, KY 40292.,Department of Medicine, University of Louisville, Louisville, KY 40292.,Department of Robley Rex VAMC, Louisville, KY 40292
| | - Gavin E Arteel
- Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY 40292.,Department of Alcohol Research Center, University of Louisville, Louisville, KY 40292
| | - Xiang Zhang
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Walter H Watson
- Department of Pharmacology & Toxicology, University of Louisville, Louisville, KY 40292.,Department of Alcohol Research Center, University of Louisville, Louisville, KY 40292.,Department of Medicine, University of Louisville, Louisville, KY 40292
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48
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Thomas DJ. The Die Is Cast: Arsenic Exposure in Early Life and Disease Susceptibility. Chem Res Toxicol 2013; 26:1778-81. [DOI: 10.1021/tx4003337] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- David J. Thomas
- Pharmacokinetics Branch,
Integrated Systems Toxicology Division, National Health and Environmental
Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States
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49
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Farzan SF, Karagas MR, Chen Y. In utero and early life arsenic exposure in relation to long-term health and disease. Toxicol Appl Pharmacol 2013; 272:384-90. [PMID: 23859881 PMCID: PMC3783578 DOI: 10.1016/j.taap.2013.06.030] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 06/28/2013] [Accepted: 06/29/2013] [Indexed: 11/20/2022]
Abstract
BACKGROUND There is a growing body of evidence that prenatal and early childhood exposure to arsenic from drinking water can have serious long-term health implications. OBJECTIVES Our goal was to understand the potential long-term health and disease risks associated with in utero and early life exposure to arsenic, as well as to examine parallels between findings from epidemiological studies with those from experimental animal models. METHODS We examined the current literature and identified relevant studies through PubMed by using combinations of the search terms "arsenic", "in utero", "transplacental", "prenatal" and "fetal". DISCUSSION Ecological studies have indicated associations between in utero and/or early life exposure to arsenic at high levels and increases in mortality from cancer, cardiovascular disease and respiratory disease. Additional data from epidemiologic studies suggest intermediate effects in early life that are related to risk of these and other outcomes in adulthood. Experimental animal studies largely support studies in humans, with strong evidence of transplacental carcinogenesis, atherosclerosis and respiratory disease, as well as insight into potential underlying mechanisms of arsenic's health effects. CONCLUSIONS As millions worldwide are exposed to arsenic and evidence continues to support a role for in utero arsenic exposure in the development of a range of later life diseases, there is a need for more prospective studies examining arsenic's relation to early indicators of disease and at lower exposure levels.
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Affiliation(s)
- Shohreh F. Farzan
- Children’s Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH 03755
- Section of Biostatistics and Epidemiology, Department of Community and Family Medicine and Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03756
| | - Margaret R. Karagas
- Children’s Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH 03755
- Section of Biostatistics and Epidemiology, Department of Community and Family Medicine and Norris Cotton Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, 03756
| | - Yu Chen
- Department of Population Health, New York University School of Medicine, New York, NY, 10016
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50
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Ngalame NNO, Micciche AF, Feil ME, States JC. Delayed temporal increase of hepatic Hsp70 in ApoE knockout mice after prenatal arsenic exposure. Toxicol Sci 2012; 131:225-33. [PMID: 22956628 DOI: 10.1093/toxsci/kfs264] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Prenatal arsenic exposure accelerates atherosclerosis in ApoE(-/-) mice by unknown mechanism. Arsenic is a hepatotoxicant, and liver disease increases atherosclerosis risk. Prenatal arsenic exposure may predispose to liver disease by priming for susceptibility to other environmental insults. Earlier microarray analyses showed prenatal arsenic exposure increased Hsc70 (HspA8) and Hsp70 (HspA1a) mRNAs in livers of 10-week-old mice. We determined effects of prenatal arsenic exposure on hepatic Hsp70 and Hsc70 expression by Western blot and on DNA methylation by methyl acceptance assay during prenatal and postnatal development. Pregnant ApoE(-/-) mice were given drinking water containing 85 mg/l NaAsO(2) (49 ppm arsenic) from gestation day (GD) 8 to 18. Hsp70 and Hsc70 expression and DNA methylation were determined in GD18 fetuses and 3-, 10-, and 24-week-old mice. Hsc70 expression was unchanged at all ages. Hsp70 induction was observed at 3 and 10 weeks, but was unchanged in GD18 fetuses and 24-week livers of mice. Global DNA methylation increased with age; arsenic had no effects. Bisulfite sequencing of DNA from livers of 10-week-old mice showed Hsp70 promoter region methylation was unchanged, but methylation was increased within the transcribed region. Hsf1 and Nrf2 nuclear translocation were investigated as potential mechanisms of Hsp70 induction and found unaltered. Putative binding sites were identified in HSP70 for in utero arsenic exposure-suppressed microRNAs suggesting a possible mechanism. Thus, prenatal arsenic exposure causes delayed temporal hepatic Hsp70 induction, suggesting a transient state of stress in livers which can predispose the mice to developing liver disease.
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Affiliation(s)
- Ntube N O Ngalame
- Department of Pharmacology & Toxicology, University of Louisville, Louisville, Kentucky 40202, USA
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