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Lai C, Chen L, Zhong X, Tian X, Zhang B, Li H, Zhang G, Wang L, Sun Y, Guo L. Long-term arsenic exposure decreases mice body weight and liver lipid droplets. ENVIRONMENT INTERNATIONAL 2024; 192:109025. [PMID: 39317010 DOI: 10.1016/j.envint.2024.109025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 09/09/2024] [Accepted: 09/18/2024] [Indexed: 09/26/2024]
Abstract
Arsenic (As) is a widespread global pollutant, and there is significant controversy surrounding its complex relationship with obesity, primarily focused on short-term exposure. Recognizing the prolonged nature of dietary arsenic exposure, this study involved feeding mice with arsenic-contained food for 14 months. The results showed that mice exposed to arsenic developed a non-alcoholic fatty liver condition, characterized by a light-yellow hue on the liver surface and various pathological alterations in the liver cells, including enlarged nuclei, cellular necrosis, inflammatory infiltration, dysfunctional mitochondria, and endoplasmic reticulum disorganization. There were also disruptions in biochemistry indices, with a significant increase in total cholesterol (TC) level and a decrease in high-density lipoprotein (HDL) level. However, some contradictory observations occurred, such as a significant decrease in body weight, triglyceride (TG) level, and the numbers of lipid droplets. Several genes related to lipid metabolism were tested, and a model was used to explain these discrepancies. Besides, examinations of the colon revealed compromised intestinal barrier function and signs of inflammation. Fecal 16S rRNA sequencing and pseudo-targeted metabolomics revealed disruptions in internal homeostasis, such as modules, nodes, connections, and lipid-related KEGG pathways. Fecal targeted metabolomics analyses of short-chain fatty acids (SCFAs) and bile acids (BAs) demonstrated a significant upregulation in three primary bile acids (CA, CDCA, TCDCA), four secondary bile acids (TUDCA, DCA, LCA, GUDCA), and total SCFAs level. Oxidative stress and inflammation were also evident. Additionally, based on correlation analysis and mediation analysis, it was assumed that changes in the microbiota (e.g., Dubosiella) can impact the liver metabolites (e.g., TGs) through alterations in fecal metabolites (e.g., LPCs). These findings provide a theoretical reference for the long-term effect of arsenic exposure on liver lipid metabolism.
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Affiliation(s)
- Chengze Lai
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China; The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Linkang Chen
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Xiaoting Zhong
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Xianbing Tian
- School of Medical Technology, Guangdong Medical University, Dongguan 523808, China
| | - Bin Zhang
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Hao Li
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Guiwei Zhang
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen 518000.China
| | - Liping Wang
- School of Nursing, Guangdong Medical University, Dongguan 523808, China
| | - Yanqin Sun
- Department of Pathology, School of Basic Medical Sciences, Guangdong Medical University, Dongguan 523808, China.
| | - Lianxian Guo
- Dongguan Key Laboratory of Public Health Laboratory Science, School of Public Health, Guangdong Medical University, Dongguan 523808, China; The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China.
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Alao ME, Perin J, Brooks WA, Hossain L, Goswami D, Zaman K, Yunus M, Khan MA, Jahan Y, Ahmed D, Slavkovich V, Graziano J, Prosperi C, Higdon M, Deloria-Knoll M, O' Brien KL, George CM. Urinary arsenic is associated with wasting and underweight status in young children in rural Bangladesh. ENVIRONMENTAL RESEARCH 2021; 195:110025. [PMID: 32791251 DOI: 10.1016/j.envres.2020.110025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/21/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Deficits in child growth are associated with poor cognitive outcomes and an increased risk for infection and mortality globally. One hundred forty million people are chronically exposed to arsenic from contaminated drinking water worldwide. While arsenic exposure has been associated with cognitive developmental delays in children, there is limited research on the association between arsenic exposure and growth deficits in young children. PURPOSE The objective of this study was to assess the association between chronic arsenic exposure and deficits in growth among children under 5 years in a rural setting in Bangladesh. METHODS Urinary arsenic measurements were collected from 465 children between the ages of 28 days-59 months in rural Matlab, Bangladesh, and analyzed by graphite furnace atomic absorption. Height and weight measurements were collected from children according to World Health Organization child growth standards. A z-score cutoff2 standard deviations below the mean was used to define stunting (height-for-age z-score), underweight (weight-for-age z-score), and wasting (weight-for-height z-score). RESULTS Children under 5 years with urinary arsenic concentrations in the third tertile (greater than 31 μg per liter (μg/L)) had a two times higher odds of being underweight after adjustment for age, creatinine, paternal education, breastfeeding, number of individuals using the same sleeping room, and physician-diagnosed pneumonia (Odds Ratio (OR): 2.29 (95% Confidence Interval (CI): 1.16, 4.52)). Children under 2 years of age had a two times higher odds of being wasted after adjustment for age, creatinine, paternal education, breastfeeding, number of individuals using the same sleeping room, and physician-diagnosed pneumonia (OR: 2.85 (95% CI: 1.18, 6.89)). CONCLUSIONS These findings suggest that arsenic exposure is associated with an increased odds of being wasted and underweight among young children in rural Bangladesh.
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Affiliation(s)
- Mary E Alao
- Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Jamie Perin
- Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - W Abdullah Brooks
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Lokman Hossain
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Doli Goswami
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Khalequzzaman Zaman
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Mohammad Yunus
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Md Alfazal Khan
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Yasmin Jahan
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Dilruba Ahmed
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Vesna Slavkovich
- Department of Environmental Health, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Joseph Graziano
- Department of Environmental Health, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Christine Prosperi
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Melissa Higdon
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Maria Deloria-Knoll
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Katherine L O' Brien
- Department of International Health, International Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Christine Marie George
- Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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Smits JE, Krohn RM, Akhtar E, Hore SK, Yunus M, Vandenberg A, Raqib R. Food as medicine: Selenium enriched lentils offer relief against chronic arsenic poisoning in Bangladesh. ENVIRONMENTAL RESEARCH 2019; 176:108561. [PMID: 31299617 DOI: 10.1016/j.envres.2019.108561] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
Chronic arsenic (As) exposure is a major environmental threat to human health affecting >100 million people worldwide. Low blood selenium (Se) increases the risk of As-induced health problems. Our aim was to reduce As toxicity through a naturally Se-rich lentil diet. In a randomized, double-blind, placebo-control trial in Bangladesh, 405 participants chronically exposed to As were enrolled. The intervention arm (Se-group) consumed Se-rich lentils (55 μg Se/day); the control arm received lentils of similar nutrient profile except with low Se (1.5 μg Se/day). Anthropometric measurements, blood, urine and stool samples, were taken at baseline, 3 and 6 months; hair at baseline and 6 months after intervention. Morbidity data were collected fortnightly. Measurements included total As in all biological samples, As metabolites in urine, and total Se in blood and urine. Intervention with Se-rich lentils resulted in higher urinary As excretion (p = 0.001); increased body mass index (p ≤ 0.01), and lower incidence of asthma (p = 0.05) and allergy (p = 0.02) compared to the control group. The Se-group demonstrated increased excretion of urinary As metabolite, dimethylarsinic acid (DMA) at 6 months compared to control group (p = 0.008). Consuming Se-rich lentils can increase As excretion and improve the health indicators in the presence of continued As exposure.
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Affiliation(s)
- Judit E Smits
- Department of Ecosystem & Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive, Calgary, AB T2N 4Z6, Canada
| | - Regina M Krohn
- Department of Ecosystem & Public Health, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive, Calgary, AB T2N 4Z6, Canada
| | - Evana Akhtar
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Samar Kumar Hore
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Md Yunus
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh
| | - Albert Vandenberg
- Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Rubhana Raqib
- Infectious Diseases Division, Icddr,b, 68, Shaheed Tajuddin Ahmed Sarani, Mohakhali, Dhaka, 1212, Bangladesh.
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