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Wang S, Lyu Y, Ji S, Liu N, Wu B, Zhao F, Li Z, Qu Y, Zhu Y, Xie L, Li Y, Zhang Z, Song H, Hu X, Qiu Y, Zheng X, Zhang W, Yang Y, Li F, Cai J, Zhu Y, Cao Z, Tan F, Shi X. Heavy metals and metalloids exposure and liver function in Chinese adults - A nationally representative cross-sectional study. ENVIRONMENTAL RESEARCH 2024; 252:118653. [PMID: 38518907 DOI: 10.1016/j.envres.2024.118653] [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: 10/23/2023] [Revised: 02/16/2024] [Accepted: 03/05/2024] [Indexed: 03/24/2024]
Abstract
BACKGROUND In China, the effects of heavy metals and metalloids (HMMs) on liver health are not consistently documented, despite their prevalent environmental presence. OBJECTIVE Our research assessed the association between HMMs and liver function biomarkers in a comprehensive sample of Chinese adults. METHODS We analyzed data from 9445 participants in the China National Human Biomonitoring survey. Blood and urine were evaluated for HMM concentrations, and liver health was gauged using serum albumin (ALB), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) metrics. Various statistical methods were employed to understand the relationship between 11 HMMs and liver function, adjusting for multiple factors. We also explored interactions with alcohol intake, gender, and age. RESULTS Among HMMs, selenium in blood [weighted geometric mean (GM) = 95.56 μg/L] and molybdenum in urine (GM = 46.44 μg/L) showed the highest concentrations, while lead in blood (GM = 21.92 μg/L) and arsenic in urine (GM = 19.80 μg/L) had the highest levels among risk HMMs. Manganese and thallium consistently indicated potential risk factor to liver in both sample types, while selenium displayed potential liver protection. Blood HMM mixtures were negatively associated with ALB (β = -0.614, 95% CI: -0.809, -0.418) and positively with AST (β = 0.701, 95% CI: 0.290, 1.111). No significant associations were found in urine HMM mixtures. Manganese, tin, nickel, and selenium were notable in blood mixture associations, with selenium and cobalt being significant in urine. The relationship of certain HMMs varied based on alcohol consumption. CONCLUSION This research highlights the complex relationship between HMM exposure and liver health in Chinese adults, particularly emphasizing metals like manganese, thallium, and selenium. The results suggest a need for public health attention to low dose HMM exposure and underscore the potential benefits of selenium for liver health. Further studies are essential to establish causality.
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Affiliation(s)
- Shiyu Wang
- Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yuebin Lyu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Saisai Ji
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Nankun Liu
- Chinese Center for Disease Control and Prevention, Beijing, China
| | - Bing Wu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Feng Zhao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Zheng Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yingli Qu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yuanduo Zhu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Linna Xie
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yawei Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Zheng Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Haocan Song
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaojian Hu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yidan Qiu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China; Institute of Environmental Health, School of Public Health, and Bioelectromagnetics Laboratory, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xulin Zheng
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wenli Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yanwei Yang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Fangyu Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jiayi Cai
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ying Zhu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Zhaojin Cao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Feng Tan
- Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Xiaoming Shi
- Chinese Center for Disease Control and Prevention, Beijing, China; China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China.
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Yin G, Zhao S, Zhao M, Xu J, Ge X, Wu J, Zhou Y, Liu X, Wei L, Xu Q. Joint and interactive effects of metal mixtures on liver damage: Epidemiological evidence from repeated-measures study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 274:116178. [PMID: 38461577 DOI: 10.1016/j.ecoenv.2024.116178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND The impact of heavy metals on liver function has been examined in numerous epidemiological studies. However, these findings lack consistency and longitudinal validation. METHODS In this study, we conducted three follow-up surveys with 426 participants from Northeast China. Blood and urine samples were collected, along with questionnaire information. Urine samples were analyzed for concentrations of four metals (chromium [Cr], cadmium [Cd], lead [Pb], and manganese [Mn]), while blood samples were used to measure five liver function indicators (alanine aminotransferase [ALT], aspartate aminotransferase [AST], albumin [ALB], globulin [GLB], and total protein [TP]). We utilized a linear mixed-effects model (LME) to explore the association between individual heavy metal exposure and liver function. Joint effects of metal mixtures were investigated using quantile g-computation and Bayesian kernel machine regression (BKMR). Furthermore, we employed BKMR and Marginal Effect models to examine the interaction effects between metals on liver function. RESULTS The LME results demonstrated a significant association between urinary heavy metals (Cr, Cd, Pb, and Mn) and liver function markers. BKMR results indicated positive associations between heavy metal mixtures and ALT, AST, and GLB, and negative associations with ALB and TP, which were consistent with the g-comp results. Synergistic effects were observed between Cd-Cr on ALT, Mn-Cr and Cr-Pb on ALB, while an antagonistic effect was found between Mn-Pb and Mn-Cd on ALB. Additionally, synergistic effects were observed between Mn-Cr on GLB and Cd-Cr on TP. Furthermore, a three-way antagonistic effect of Mn-Pb-Cr on ALB was identified. CONCLUSION Exposure to heavy metals (Cr, Cd, Mn, Pb) is associated with liver function markers, potentially leading to liver damage. Moreover, there are joint and interaction effects among these metals, which warrant further investigation at both the population and mechanistic levels.
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Affiliation(s)
- Guohuan Yin
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Shuanzheng Zhao
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Meiduo Zhao
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jing Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Xiaoyu Ge
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jingtao Wu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Yifan Zhou
- Civil Aviation Medicine Center, Civil Aviation Administration of China, Beijing 100123, China
| | - Xiaolin Liu
- Department of Epidemiology and Biostatistics, Jinzhou Medical University, Jinzhou, Liaoning 121001, China
| | - Lanping Wei
- Jinzhou Central Hospital, Jinzhou, Liaoning 121001, China
| | - Qun Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China.
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Tang S, Luo S, Wu Z, Su J. Association between blood heavy metal exposure levels and risk of metabolic dysfunction associated fatty liver disease in adults: 2015-2020 NHANES large cross-sectional study. Front Public Health 2024; 12:1280163. [PMID: 38435294 PMCID: PMC10904630 DOI: 10.3389/fpubh.2024.1280163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 02/07/2024] [Indexed: 03/05/2024] Open
Abstract
Background The relationships between heavy metals and fatty liver, especially the threshold values, have not been fully elucidated. The objective of this research was to further investigate the correlation between blood heavy metal exposures and the risk of Metabolic dysfunction Associated Fatty Liver Disease (MAFLD) in adults. Methods Laboratory data on blood metal exposure levels were obtained from National Health and Nutrition Examination Survey (NHANES) data for the period 2015 to 2020 for a cross-sectional study in adults. Associations between blood levels of common heavy metals and the risk of MAFLD in adults were analyzed using multifactorial logistic regression and ranked for heavy metal importance using a random forest model. Finally, thresholds for important heavy metals were calculated using piecewise linear regression model. Results In a multifactorial logistic regression model, we found that elevated levels of selenium (Se) and manganese (Mn) blood exposure were strongly associated with the risk of MAFLD in adults. The random forest model importance ranking also found that Se and Mn blood exposure levels were in the top two positions of importance for the risk of disease in adults. The restricted cubic spline suggested a non-linear relationship between Se and Mn blood exposure and adult risk of disease. The OR (95% CI) for MAFLD prevalence was 3.936 (2.631-5.887) for every 1 unit increase in Log Mn until serum Mn levels rose to the turning point (Log Mn = 1.10, Mn = 12.61 μg/L). This correlation was not significant (p > 0.05) after serum Mn levels rose to the turning point. A similar phenomenon was observed for serum Se levels, with a turning point of (Log Se = 2.30, Se = 199.55 μg/L). Conclusion Blood heavy metals, especially Se and Mn, are significantly associated with MAFLD in adults. They have a non-linear relationship with a clear threshold.
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Affiliation(s)
- Song Tang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - Simin Luo
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhendong Wu
- Department of Gastroenterology, Dongguan Songshan Lake Tungwah Hospital, Dongguan, China
| | - Jiandong Su
- Department of Gastroenterology, Dongguan Songshan Lake Tungwah Hospital, Dongguan, China
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Wu L, Lan Y, Yu Z, Wang Y, Liao W, Zhang G, Wang L. Blood manganese and non-alcoholic fatty liver disease in a high manganese exposure area in China. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2023; 42:118. [PMID: 37926847 PMCID: PMC10626744 DOI: 10.1186/s41043-023-00467-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND AND AIMS Manganese (Mn) deficiency and intoxication may affect nonalcoholic fatty liver disease (NAFLD) risk differently. We aimed to explore the association between blood Mn and NAFLD in an area with high Mn exposure in drinking water. METHODS We conducted a case-control study among 1407 patients with NAFLD and 1774 sex- and age-matched healthy controls in a physical examination population in Zhoushan hospital, Zhejiang province in China. We used the restricted cubic splines method to investigate the dose-response relationship. Logistic regression models were applied to determine the risk of NAFLD, and severity of NAFLD. RESULTS The blood Mn concentration was higher in the NAFLD group than in the control group in women (16.1 ± 6.2 μg/L vs. 14.7 ± 6.4 μg/L, P = 0.022) and men (14.5 ± 6.3 μg/L vs. 13.6 ± 6.8 μg/L, P < 0.001). We found an inverted L shape relationship between blood Mn and NAFLD in both women and men. Compared to the lowest quartile, the adjusted odds ratio (OR) and 95% confidence interval (CI) of NAFLD for the highest quartile group was 1.646(1.222,2.217), 1.494(1.082,2.061), and 3.146(1.285,7.701) for the total population, men, and women. The positive relationship was only observed in those with fibrosis-4 score < 1.30 and normal alanine transaminase. Stratified analysis showed an interaction between smoking (P = 0.073), alcohol drinking (P = 0.013), and Mn, with a more prominent effect on the NAFLD in the never-smokers (OR = 2.153, 95% CI 1.408-3.290) and drinkers (OR = 2.596, 95% CI 1.608-4.191). CONCLUSION Higher blood Mn is associated with an elevated NAFLD risk in the high Mn exposure areas, especially in nonsmokers and drinkers. Further studies are needed to verify this result in the areas with high Mn exposure.
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Affiliation(s)
- Liping Wu
- Department of Hepatobiliary Surgery, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, 316021, China
| | - Yanqi Lan
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking, Union Medical College, 5 Dong Dan San Tiao, Beijing, 100730, China
| | - Ze Yu
- Department of Hepatobiliary Surgery, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, 316021, China
| | - Yanhong Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking, Union Medical College, 5 Dong Dan San Tiao, Beijing, 100730, China
| | - Wei Liao
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking, Union Medical College, 5 Dong Dan San Tiao, Beijing, 100730, China
| | - Guoqiang Zhang
- Department of Hepatobiliary Surgery, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, 316021, China.
| | - Li Wang
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking, Union Medical College, 5 Dong Dan San Tiao, Beijing, 100730, China.
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Liu W, Cao S, Shi D, Yu L, Qiu W, Chen W, Wang B. Single-chemical and mixture effects of multiple volatile organic compounds exposure on liver injury and risk of non-alcoholic fatty liver disease in a representative general adult population. CHEMOSPHERE 2023; 339:139753. [PMID: 37553041 DOI: 10.1016/j.chemosphere.2023.139753] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/17/2023] [Accepted: 08/05/2023] [Indexed: 08/10/2023]
Abstract
Evidence on liver injury and non-alcoholic fatty liver disease (NAFLD) from volatile organic compounds (VOCs) exposure is insufficient. A cross-sectional study including 3011 US adults from the National Health and Nutrition Examination Survey was conducted to explore the associations of urinary exposure biomarkers (EBs) for 13 VOCs (toluene, xylene, ethylbenzene, styrene, acrylamide, N,N-dimethylformamide, acrolein, crotonaldehyde, 1,3-butadiene, acrylonitrile, cyanide, propylene oxide, and 1-bromopropane) with liver injury biomarkers and the risk of NAFLD by performing single-chemical (survey weight regression) and mixture (Bayesian kernel machine regression [BKMR] and weighted quantile sum [WQS]) analyses. We found significant positive associations of EBs for toluene and 1-bromopropane with alanine aminotransferase (ALT), EBs for toluene, crotonaldehyde, and 1,3-butadiene with asparate aminotransferase (AST), EBs for 1,3-butadiene and cyanide with alkaline phosphatase (ALP), EBs for xylene and cyanide with hepamet fibrosis score (HFS), EBs for the total 13 VOCs (except propylene oxide) with United States fatty liver index (USFLI), and EBs for xylene, N,N-dimethylformamide, acrolein, crotonaldehyde, and acrylonitrile with NALFD; and significant inverse associations of EBs for ethylbenzene, styrene, acrylamide, acrolein, crotonaldehyde, 1,3-butadiene, acrylonitrile, cyanide, and propylene oxide with total bilirubin, EBs for ethylbenzene, styrene, acrylamide, acrolein, 1,3-butadiene, acrylonitrile, and cyanide with albumin (ALB), EBs for ethylbenzene, styrene, acrylamide, N,N-dimethylformamide, acrolein, crotonaldehyde, 1,3-butadiene, acrylonitrile, cyanide, and propylene oxide with total protein (TP), and EB for 1-bromopropane with AST/ALT (all P-FDR<0.05). In BKMR and WQS, the mixture of VOC-EBs was significantly positively associated with ALT, AST, ALP, HFS, USFLI, and the risk of NAFLD, while significantly inversely associated with TBIL, ALB, TP, and AST/ALT. VOCs exposure was associated with liver injury and increased risk of NAFLD in US adults. These findings highlight that great attention should be paid to the potential risk of liver health damage from VOCs exposure.
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Affiliation(s)
- Wei Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Shuting Cao
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Da Shi
- Agricultural, Food and Nutritional Science, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, Alberta, T6G 2P5, Canada
| | - Linling Yu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Weihong Qiu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou, 350122, China
| | - Weihong Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
| | - Bin Wang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
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Łanocha-Arendarczyk N, Kot K, Baranowska-Bosiacka I, Kupnicka P, Przydalska D, Łanocha A, Chlubek D, Wojciechowska-Koszko I, Kosik-Bogacka DI. Macroelement and Microelement Levels in the Urine in Experimental Acanthamoebiasis. Pathogens 2023; 12:1039. [PMID: 37623999 PMCID: PMC10458488 DOI: 10.3390/pathogens12081039] [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: 07/04/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
Free-living amoebas can impact the excretion of macroelements and microelements in urine. The aim of the present study was to examine the concentrations of macroelements, including calcium (Ca), phosphorus (P), sodium (Na), potassium (K), and magnesium (Mg), as well as microelements such as manganese (Mn), zinc (Zn), copper (Cu), iron (Fe), and chromium (Cr), in the urine during acanthamoebiasis while considering the host's immunological status. This is the first study to show an increase in urinary excretion of Ca, Mn, Cu, Fe, Na, and Cr, along with a decreased excretion of K, in immunocompetent mice 16 days post Acanthamoeba sp. infection. In the final phase of infection (24 dpi), there was a further decrease in urinary K excretion and a lower level of P in Acanthamoeba sp. infected immunocompetent hosts. During acanthamoebiasis in immunosuppressed hosts, increased excretion of Zn, Fe, and Cr was observed at the beginning of the infection, and increased Na excretion only at 16 days post Acanthamoeba sp. infection. Additionally, host immunosuppression affected the concentration of Fe, Cr, Zn, Cu, Mn, and Ca in urine.
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Affiliation(s)
- Natalia Łanocha-Arendarczyk
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (N.Ł.-A.); (K.K.); (D.P.)
| | - Karolina Kot
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (N.Ł.-A.); (K.K.); (D.P.)
| | - Irena Baranowska-Bosiacka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (I.B.-B.); (P.K.); (D.C.)
| | - Patrycja Kupnicka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (I.B.-B.); (P.K.); (D.C.)
| | - Dagmara Przydalska
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (N.Ł.-A.); (K.K.); (D.P.)
| | - Aleksandra Łanocha
- Department of Haematology and Transplantology, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland;
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland; (I.B.-B.); (P.K.); (D.C.)
| | - Iwona Wojciechowska-Koszko
- Department of Microbiology, Immunology and Laboratory Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland;
| | - Danuta Izabela Kosik-Bogacka
- Independent Laboratory of Pharmaceutical Botany, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland
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Ji H, Tan D, Chen Y, Cheng Z, Zhao J, Lin M. Effects of different manganese sources on nutrient digestibility, fecal bacterial community, and mineral excretion of weaning dairy calves. Front Microbiol 2023; 14:1163468. [PMID: 37275150 PMCID: PMC10232960 DOI: 10.3389/fmicb.2023.1163468] [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: 02/10/2023] [Accepted: 04/20/2023] [Indexed: 06/07/2023] Open
Abstract
Introduction Mn, which is an essential trace mineral for all animals, has functions in skeletal system development, carbohydrate and lipid metabolism. The aim of this study was to clarify the effects of different manganese (Mn) sources in basal diets on nutrient apparent digestibility, fecal microbes, and mineral elements excretion before and after weaning. Methods A total of 15 Holstein heifer calves (6-week-old, 82.71 ± 1.35, mean ± standard error) were randomly designed into three groups (five each): no extra Mn supplemented (CON), 20 mg Mn/kg (dry matter basis) in the form of chelates of lysine and glutamic acid in a mixture of 1:1 (LGM), and 20 mg Mn/kg (dry matter basis) in the form of MnSO4. All calves were weaned at 8 weeks of age. The experiment lasted for 28 days (14 days before weaning and 14 days after weaning). Dry matter intake (DMI) was recorded daily. The animals were weighed by electronic walk-over, and body size indices were collected using tape on days -14, -1, and 14 of weaning. The feces of calves was collected to measure the apparent digestibility of nutrients (acid insoluble ash was an internal marker) and bacterial community on days -1, 1, 3, 7, and 14 of weaning. Fecal mineral concentration was determined by inductively coupled plasma emission spectroscopy on days -1, 1, 7, and 14 of weaning. Results The results showed that, compared with the CON group, adding LGM to diets containing 158.82 mg/kg Mn increased the apparent digestibility (P < 0.05). The Chao 1 and Shannon index of fecal bacteria decreased at day 1 in the LGM and MnSO4 groups and increased after weaning. The PCoA results indicated that the LGM group was distinctly separate from the CON and MnSO4 groups during the whole experimental period. Significant differences (P < 0.05) were observed in the relative abundance of two phyla (Proteobacteria and Spirochaetota) and eight genera (Alloprevotella, Prevotellaceae_UCG-001, Clostridia UCG 014, RF39, UCG-010, Pseudomonas, Ralstonia, and Treponema) in three groups. Moreover, the LGM group showed less excretion of Fe, P, and Mn than the MnSO4 group. Discussion In summary, 20 mg Mn/kg diet supplementation improved nutrient digestibility, changed the fecal microbial community, and reduced mineral excretion. Organic Mn supplementation in the diet had more advantages over the sulfate forms in weaning calves.
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Affiliation(s)
- Huimin Ji
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Dejin Tan
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yuhua Chen
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Zhiqiang Cheng
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Jingwen Zhao
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Miao Lin
- Institute of Animal Culture Collection and Application, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
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8
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Wang Y, Wang W, Wu Y, JiLiu J, Hu X, Wei M, Cao L. Characterization of manganized soluble dietary fiber complexes from tigernut meal and study of the suppressive activity of digestive enzymes in vitro. Front Nutr 2023; 10:1157015. [PMID: 37215224 PMCID: PMC10196637 DOI: 10.3389/fnut.2023.1157015] [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: 02/02/2023] [Accepted: 04/19/2023] [Indexed: 05/24/2023] Open
Abstract
In this study, manganized soluble dietary fiber (SDF-Mn(II)) was prepared from tigernut meal using a microwave solid-phase synthesis method with SDF. Microscopic morphological and structural analyses of SDF-Mn(II) were carried out using scanning electron microscopy, Fourier infrared spectroscopy, UV full-band scanning, X-ray diffraction, a thermal analyzer, gel permeation chromatography, and nuclear magnetic resonance, and its in vitro hypoglycemic activity was initially investigated. The results of these analyses revealed that the reaction of Mn(II) with SDF mainly involved hydroxyl and carbonyl groups, with the Nuclear magnetic resonance (NMR) analysis showing that specific covalent binding was produced and substitution was mainly carried out at the C6 position. Moreover, compared with SDF, the SDF-Mn(II) complex exhibited a porous structure, red-shifted, and color-enhancing effects on the UV characteristic peaks, significantly increased crystallinity and decreased molecular weight, and improved thermal stability; in addition, SDF-Mn(II) afforded significantly enhanced inhibition of α-amylase and α-glucosidase and possesses good in vitro digestive enzyme inhibition activity.
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Affiliation(s)
- Yifei Wang
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Weihao Wang
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yunjiao Wu
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Junlan JiLiu
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xin Hu
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Mingzhi Wei
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
| | - LongKui Cao
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, China
- National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing, China
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9
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Yi W, Cheng J, Song J, Pan R, Liang Y, Sun X, Li Y, Wu Y, Yan S, Jin X, Mei L, Cheng J, Zhang X, Su H. Associations of polycyclic aromatic hydrocarbons, water-soluble ions and metals in PM 2.5 with liver function: Evidence from schizophrenia cohort. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 868:161624. [PMID: 36681036 DOI: 10.1016/j.scitotenv.2023.161624] [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: 11/23/2022] [Revised: 01/08/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Fine particulate matter (PM2.5) was reported to impact liver function, but the roles of specific PM2.5 chemical components remained to be explored. Besides, severe liver dysfunction in schizophrenia patients deserves attention. OBJECTIVE To investigate the associations of short-term PM2.5 components with liver function in schizophrenia patients. METHODS A repeated-measures study based on schizophrenia cohort including 1023 visits (n = 446) was conducted during 2017-2020. Liver function was reflected by 10 indicators including liver enzymes, proteins and bilirubin et al. Monitoring data of PM2.5 and its components, including 16 polycyclic aromatic hydrocarbons (PAHs), 4 water-soluble ions and 10 metals were collected. Linear mixed effect and Bayesian kernel machine regression (BKMR) models were used to evaluate the single and combined effects of PM2.5 components (0-3 day) on liver function in schizophrenia patients. RESULTS Several PAHs were significantly associated with liver enzymes, while water-soluble ions and metal components had almost no association. Specifically, with per interquartile range (IQR) increased in Fluoranthene, levels of alkaline phosphatase (ALP), alanine transaminase (ALT), aspartate transaminase (AST) and gamma-glutamyl transpeptidase (GGT) increased by 2.06 %, 5.07 %, 4.94 % and 5.56 %, respectively. An IQR increases in Benzo[a]pyrene was significantly associated with 6.62 %, 3.67 % and 7.83 % increase in ALT, AST and GGT. Almost all PAHs, sulfate, nitrate, ammonium, Sb, Al, As, Pb, Mn and Tl were positively associated with albumin (ALB). Phenanthrene was associated with increased levels of direct bilirubin (DBIL) and total bilirubin (TBIL). The combined effects of significant PM2.5 components on ALP, GGT, ALB, globulin (GLOB), ratio of albumin to globulin (A/G), TBIL and total bile acid (TBA) were found by BKMR, respectively. CONCLUSIONS Findings highlight the short-term combined effects of PM2.5 components, especially PAHs, on liver function in schizophrenia patients, which contribute to the management of PM2.5 sources including combustion activities and traffic emissions as well as improving schizophrenia comorbidities.
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Affiliation(s)
- Weizhuo Yi
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Jun Cheng
- Anhui Mental Health Center, Hefei, Anhui, China
| | - Jian Song
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Rubing Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yunfeng Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Xiaoni Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yuxuan Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yudong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Shuangshuang Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Xiaoyu Jin
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Lu Mei
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Jian Cheng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Xulai Zhang
- Anhui Mental Health Center, Hefei, Anhui, China.
| | - Hong Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China.
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Kalisińska E, Kot K, Łanocha-Arendarczyk N. Red fox as a potential bioindicator of metal contamination in a European environment. CHEMOSPHERE 2023; 319:138037. [PMID: 36736471 DOI: 10.1016/j.chemosphere.2023.138037] [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: 10/18/2022] [Revised: 01/17/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
In times of widespread environmental pollution with heavy metals of anthropogenic origin and the increasing dynamics of this process, it is justified to collect as much data as possible on the concentration of metals in terrestial mammals from unpolluted areas. The purpose of this research was to present the concentration of essential (chromium, copper, iron, manganese, molybdenum, and zinc), probably essential (nickel, vanadium) and non-esential element (cadmium, lead, silver, strontium, and tin) in the liver, kidneys, muscles and brain of red fox (Vulpes vulpes) inhabiting north-western Poland. We revealed that the concentration of all metals, apart from Ni, was different between studied tissues. Sn and Mo have the highest affinity to the liver, whereas Ag, Sr, Cr had higher concentrations in the brain than in other organs. Various positive relationship between the concentrations of metals were observed in the tissues. Moreover, we noted negative correlations between Ag and Sn in the kidneys and brain, and between Cu and Ag in the liver. In our study the red fox was used as biomonitor for the assessment of exposure of carnivores to metals, in the generally unpolluted areas of Central Europe. Data presented in the report may be used as comparative values in similar ecotoxicological studies.
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Affiliation(s)
- Elżbieta Kalisińska
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland
| | - Karolina Kot
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland
| | - Natalia Łanocha-Arendarczyk
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111, Szczecin, Poland.
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11
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Liu J, Tan L, Liu Z, Shi R. Blood and urine manganese exposure in non-alcoholic fatty liver disease and advanced liver fibrosis: an observational study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:22222-22231. [PMID: 36280639 DOI: 10.1007/s11356-022-23630-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Manganese was the key activator of biological enzymes-mediated metabolic diseases (Mets)-associated pathophysiological process. Non-alcoholic fatty liver disease (NAFLD), which was the hepatic manifestation of Mets, development remained a mystery. We aimed to explore the association between blood/urine manganese exposure and NAFLD and liver fibrosis diagnosed by vibration-controlled transient elastography (VCTE). All data were extracted from National Health and Nutrition Examination Survey database (2017-2018). A total of 3580 participants with blood manganese data were enrolled and divided into four groups according to the quartile of blood manganese exposure level. In multiple logistic regression models, the higher blood manganese exposure level (groups 2, 3, and 4) had a significant positive association with NAFLD (β = 1.58, 1.30, and 1.69). In subgroup analysis, the main inversely correlation between blood manganese and NAFLD was found in participants with normal/high body mass index and high blood manganese exposure level. Moreover, in 1179 participants with urine manganese data, urine manganese exposure level presented as significantly associated with advanced liver fibrosis in models 1 and 2 (β = 2.00 and 2.02). This study showed that manganese exposure level was positively associated with NAFLD and advanced liver fibrosis among the US population. We suggested that manganese exposure level was a biomarker of the development of NAFLD.
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Affiliation(s)
- Jie Liu
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liao Tan
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhaoya Liu
- Department of the Geriatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ruizheng Shi
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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12
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Ni L, Chen F, Ran R, Li X, Jin N, Zhang H, Peng B. A Deep Learning-Based Model for Predicting Abnormal Liver Function in Workers in the Automotive Manufacturing Industry: A Cross-Sectional Survey in Chongqing, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14300. [PMID: 36361178 PMCID: PMC9655771 DOI: 10.3390/ijerph192114300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
To identify the influencing factors and develop a predictive model for the risk of abnormal liver function in the automotive manufacturing industry works in Chongqing. Automotive manufacturing workers in Chongqing city surveyed during 2019-2021 were used as the study subjects. Logistic regression analysis was used to identify the influencing factors of abnormal liver function. A restricted cubic spline model was used to further explore the influence of the length of service. Finally, a deep neural network-based model for predicting the risk of abnormal liver function among workers was developed. Of all 6087 study subjects, a total of 1018 (16.7%) cases were detected with abnormal liver function. Increased BMI, length of service, DBP, SBP, and being male were independent risk factors for abnormal liver function. The risk of abnormal liver function rises sharply with increasing length of service below 10 years. AUC values of the model were 0.764 (95% CI: 0.746-0.783) and 0.756 (95% CI: 0.727-0.786) in the training and test sets, respectively. The other four evaluation indices of the DNN model also achieved good values.
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Affiliation(s)
- Linghao Ni
- School of Public Health, Chongqing Medical University, Chongqing 400016, China
| | - Fengqiong Chen
- Department of Occupational Health and Radiation Health, Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - Ruihong Ran
- Department of Occupational Health and Radiation Health, Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - Xiaoping Li
- Department of Occupational Health and Radiation Health, Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - Nan Jin
- Department of Occupational Health and Radiation Health, Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - Huadong Zhang
- Department of Occupational Health and Radiation Health, Chongqing Center for Disease Control and Prevention, Chongqing 400042, China
| | - Bin Peng
- School of Public Health, Chongqing Medical University, Chongqing 400016, China
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13
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Wang C, Zhu Y, Long H, Ou M, Zhao S. Relationship between blood manganese and bone mineral density and bone mineral content in adults: A population-based cross-sectional study. PLoS One 2022; 17:e0276551. [PMID: 36269752 PMCID: PMC9586363 DOI: 10.1371/journal.pone.0276551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 10/09/2022] [Indexed: 11/17/2022] Open
Abstract
PURPOSE It has been reported that bone is the primary organ for manganese (Mn) accumulation, but the association between manganese and bone loss remains debatable. Therefore, this study aimed to evaluate the relationship between blood manganese and bone mineral density/bone mineral content (BMD/BMC) by using a representative sample from the National Health and Nutrition Examination Survey (NHANES). METHODS A total of 9732 subjects over the age of 18 with available data were enrolled in this study. The relationship between blood manganese and BMD/BMC of the total body, spine and femoral regions was evaluated using multivariate linear regression models. Subgroup analyses were also performed. RESULTS We observed a negative association between blood manganese and BMD/BMC in the femoral neck and total body in the fully adjusted model, especially femoral neck BMD in women aged 50-70 years. CONCLUSION In brief, people exposed to manganese should be aware of the increased risk of osteopenia or osteoporosis. Besides, due to the lack of available data, there are no definite values for the tolerable upper intake level (UL), average requirement (AR) and population reference intake (PRI) of manganese. The results of our study may provide some references for the establishment of AR, PRI and UL of Mn.
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Affiliation(s)
- Chao Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yong Zhu
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Haitao Long
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Mingning Ou
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shushan Zhao
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
- * E-mail:
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14
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Keskin F, Sarikurkcu C, Demirak A, Akata I, Sihoglu Tepe A. Wild mushrooms from Ilgaz Mountain National Park (Western Black Sea, Turkey): element concentrations and their health risk assessment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:31923-31942. [PMID: 35013958 DOI: 10.1007/s11356-021-18011-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
The purpose of this study was to determine Fe, Cd, Cr, Se, P, Cu, Mn, Zn, Al, Ca, Mg, and K contents of some edible (Chlorophyllum rhacodes, Clavariadelphus truncatus, Clitocybe nebularis, Hydnum repandum, Hygrophorus pudorinus, Infundibulicybe gibba, Lactarius deliciosus, L. piperatus, L. salmonicolor, Macrolepiota mastoidea, Russula grata, Suillus granulatus, and Tricholoma imbricatum), inedible (Amanita pantherina, Geastrum triplex, Gloeophyllum sepiarium, Hypholoma fasciculare, Phellinus vorax, Pholiota limonella, Russula anthracina, and Tapinella atrotomentosa), and poisonous mushroom species (Amanita pantherina and Hypholoma fasciculare) collected from Ilgaz Mountain National Park (Western Black Sea, Turkey). The element contents of the mushrooms were determined to be 18.0-1239.1, 0.2-4.6, 0.1-3.4, 0.2-3.2, 1.0-8.9, 3.3-59.9, 3.7-220.4, 21.3-154.1, 6.4-754.3, 15.8-17,473.0, 413.0-5943.0, and 2803.0-24,490.0 mg·kg-1, respectively. In addition to metal contents, the daily intakes of metal (DIM) and Health Risk Index (HRI) values of edible mushrooms were also calculated. Both DIM and HRI values of mushroom species except L. salmanicolor, M. mastoidea, and R. grata were within the legal limits. However, it was determined that the Fe content of L. salmanicolor and M. mastoidea and Cd content of R. grata were above the legal limits.
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Affiliation(s)
- Feyyaz Keskin
- Environmental Problems Research and Application Center, Mugla Sıtkı Koçman University, TR-48000, Mugla, Turkey
| | - Cengiz Sarikurkcu
- Faculty of Pharmacy, Department of Analytical Chemistry, Afyonkarahisar Health Sciences University, TR-03100, Afyonkarahisar, Turkey.
| | - Ahmet Demirak
- Environmental Problems Research and Application Center, Mugla Sıtkı Koçman University, TR-48000, Mugla, Turkey
| | - Ilgaz Akata
- Faculty of Science, Department of Biology, Ankara University, TR-06100, Ankara, Turkey
| | - Arzuhan Sihoglu Tepe
- Department of Pharmacy Services, Kilis 7 Aralik University, Vocational High School of Health Services, TR-79000, Kilis, Turkey
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15
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Ezz El Arab A, Abbas OA, Abdelrahman MT. Effect of Different Garlic Preparations on Testosterone, Thyroid Hormones, and Some Serum Trace Elements in Rats. Biol Trace Elem Res 2022; 200:1274-1286. [PMID: 34050456 DOI: 10.1007/s12011-021-02756-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/20/2021] [Indexed: 10/21/2022]
Abstract
Garlic is a house-available vegetable which is widely used for its spicy and medicinal benefits. Impact of different preparations on testosterone, thyroid hormones, and blood micro and trace elements were studied. Eight groups of male albino rats were selected including control group and other seven groups administered different doses of different garlic preparations by oral gavages for 1 month. At the end of the experiment, blood samples were collected for determination of serum hormones by radioimmunoassay, serum micro and trace elements by inductively coupled plasma-optical emission spectrometry (ICP-OES), and testes tissues for histological examination. All treated groups with different garlic preparations revealed a highly significant decrease of testosterone level in rats as compared to control which confirmed with histological changes. Increase of thyroid hormones in some groups was seen. Hypokalemia and hypernatremia effect was recorded due to garlic treatments. Calcium, magnesium, selenium, zinc, manganese, iron, cadmium, lead, silicon, molybdenum, germanium, barium, boron, niobium, and aluminum levels showed alterations in different preparations groups. On the other hand, insignificant changes of strontium, chromium, cesium, and the nickel serum levels were noted. Interestingly, although all garlic preparations have negative effects on serum testosterone level and testicular tissues, some garlic preparations have different effects on blood elements. Consequently, it infers that the usage of different garlic preparations must abide benefit/risk assessment to avoid unexpected health issues.
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Affiliation(s)
- Aliaa Ezz El Arab
- Radioisotopes Department, Egyptian Atomic Energy Authority, Giza, Egypt
| | - Osama Ahmed Abbas
- Radioisotopes Department, Egyptian Atomic Energy Authority, Giza, Egypt
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Zhao M, Ge X, Xu J, Li A, Mei Y, Yin G, Wu J, Liu X, Wei L, Xu Q. Association between urine metals and liver function biomarkers in Northeast China: A cross-sectional study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 231:113163. [PMID: 35030523 DOI: 10.1016/j.ecoenv.2022.113163] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/30/2021] [Accepted: 01/01/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND After heavy metals enter the body, they affect a variety of organs, particularly the main metabolic organ, the liver. Moreover, people are more likely to be exposed to multiple metals than to a single metal. We explored the associations between exposure to a heavy metal mixture and liver function biomarkers. METHODS This study involved 1171 residents living in areas with or without heavy metal exposure in northeast China. Urine concentrations of chromium (Cr), cadmium (Cd), lead (Pb), and manganese (Mn) were measured. Total protein (TP), albumin (ALB), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) were used as biomarkers of liver function. A generalized linear model (GLM), quantile g-computation, and Bayesian kernel machine regression (BKMR) were used to explore the associations between the four metals and liver function. RESULTS GLM analysis revealed that Cr level was negatively associated with TP (β = - 0.57; 95% CI: - 0.89, - 0.26) and ALB (β = - 0.27; 95% CI: - 0.47, - 0.07) levels, and Cd level was positively associated with AST (β = 1.04; 95% CI: 0.43, 1.65) and ALT (β = 0.94; 95% CI: 0.08, 1.79) levels. ALB (β = 0.26; 95% CI: 0.10, 0.41) and ALT (β = 0.52; 95% CI: 0.02, 1.02) levels were positively associated with urine Mn concentration. The quantile g-computation indicated that exposure to a mixture of the four metals was significantly associated with TP (β = - 0.56; 95% CI: - 0.94, - 0.18) and ALT (β = 0.84; 95% CI: 0.04, 1.63) levels. Among the metals, Cr had the strongest effect on TP and Cd had that on AST. The BKMR model indicated that mixed metal exposure was negatively associated with TP and ALB levels and positively associated with ALT and AST levels. CONCLUSION Exposure to mixtures of heavy metals may influence liver function. Cr and Cd may be the largest contributors.
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Affiliation(s)
- Meiduo Zhao
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Xiaoyu Ge
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jing Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Ang Li
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Yayuan Mei
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Guohuan Yin
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jingtao Wu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Xiaolin Liu
- Department of Epidemiology and Biostatistics, Jinzhou Medical University, Jinzhou 121001, Liaoning, China
| | - Lanping Wei
- Jinzhou Central Hospital, Jinzhou 121001, Liaoning, China
| | - Qun Xu
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine of Peking Union Medical College, Beijing 100005, China; Center of Environmental and Health Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China.
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17
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Sheida A, Taghavi T, Shafabakhsh R, Ostadian A, Razaghi Bahabadi Z, Khaksary Mahabady M, Hamblin MR, Mirzaei H. Potential of natural products in the treatment of myocardial infarction: focus on molecular mechanisms. Crit Rev Food Sci Nutr 2022; 63:5488-5505. [PMID: 34978223 DOI: 10.1080/10408398.2021.2020720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Although conventional drugs are widely used in the prevention and treatment of cardiovascular disease (CVD), they are being used less frequently due to concerns about possible side effects over the long term. There has been a renewed research interest in medicinal plant products, and their role in protecting the cardiovascular system and treating CVD, which are now being considered as potential alternatives to modern drugs. The most important mechanism causing damage to the myocardium after heart attack and reperfusion, is increased levels of free radicals and oxidative stress. Therefore, treatment approaches often focus on reducing free radicals or enhancing antioxidant defense mechanism. It has been previously reported that bioactive natural products can protect the heart muscle in myocardial infarction (MI). Since these compounds are readily available in fruits and vegetables, they could prevent the risk of MI if they are consumed daily. Although the benefits of a healthy diet are well known, many scientific studies have focused on whether pure natural compounds can prevent and treat MI. In this review we summarize the effects of curcumin, resveratrol, quercitin, berberine, and tanshinone on MI and CVD, and focus on their proposed molecular mechanisms of action.
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Affiliation(s)
- Amirhossein Sheida
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Amirreza Ostadian
- Department of Laboratory Medicine, School of Allied Medical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Zahra Razaghi Bahabadi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Mahmood Khaksary Mahabady
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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18
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Meishuo O, Eshak ES, Muraki I, Cui R, Shirai K, Iso H, Tamakoshi A. Association between Dietary Manganese Intake and Mortality from Cardiovascular Disease in Japanese Population: The Japan Collaborative Cohort Study. J Atheroscler Thromb 2022; 29:1432-1447. [PMID: 35082202 PMCID: PMC9529386 DOI: 10.5551/jat.63195] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Ouyang Meishuo
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Ehab S. Eshak
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Isao Muraki
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Renzhe Cui
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Kokoro Shirai
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Hiroyasu Iso
- Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Akiko Tamakoshi
- Public Health, Department of Social Medicine, Faculty of Medicine, Hokkaido University
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Shu CC, Chen JK, Huang PC, Hwang JS, Su TC. Association between urinary manganese and pulmonary function in young adults: A cross-sectional design with a longitudinal cohort validation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 227:112937. [PMID: 34717218 DOI: 10.1016/j.ecoenv.2021.112937] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/04/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The impact of heavy metals on pulmonary function among young adults has been scarcely studied, especially by a longitudinal cohort study. METHODS We prospectively enrolled 974 young adults (aged 20-45 years) during 2017-2019 and measured pulmonary function and urinary heavy metals, including manganese, copper, chromium, iron, nickel, zinc, cadmium, and lead. Among them, 461 participants had examination of the same urinary heavy metals during 2006-2008, which could be used as a cohort for long-term effect of urinary metals on pulmonary function. RESULTS In the 974 enrolled participants, urinary heavy metals were within normal range. The urinary manganese level was the only significant factor for the observed/predicted ratios of forced vital capacity (FVC %)(β coefficient: -1.217, p = 0.030), forced expiratory volume in one second (FEV1%)(β: -1.664, p < 0.001), and FEV1/FVC% of predicted (β: -0.598, p = 0.047) in multivariable linear regression under cross sectional design. In cohort analysis, the urinary manganese level was also negatively associated with the FEV1% (β: -1.920, p = 0.021). There was no significance between other urinary heavy metals and pulmonary function for all participants. The urinary manganese significantly negatively correlated with FVC%, FEV1% and FEV1/FVC% in female subgroup whereas copper and iron were significantly negatively correlated with FVC% in male subgroup. CONCLUSIONS Among urinary heavy metals, urinary manganese level was associated with pulmonary function negatively, even the level was within normal range. In addition, women might be more susceptible to manganese. There is emergent need to conduct further investigation to confirm the respiratory hazardous effects of manganese.
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Affiliation(s)
- Chin-Chung Shu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan, ROC
| | - Jia-Kun Chen
- Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei 10055, Taiwan, ROC
| | - Po-Chin Huang
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan, ROC; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, ROC; Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
| | - Jing-Shiang Hwang
- Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan, ROC
| | - Ta-Chen Su
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan, ROC; Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei 10055, Taiwan, ROC; Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan, ROC; The Experimental Forest, National Taiwan University, Nantou, Taiwan, ROC.
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20
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Ordak M, Sloniewicz N, Nasierowski T, Muszynska E, Bujalska-Zadrozny M. Manganese concentration in patients with encephalopathy following ephedrone use: a narrative review and analysis of case reports. Clin Toxicol (Phila) 2021; 60:10-17. [PMID: 34521308 DOI: 10.1080/15563650.2021.1973488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Numerous case reports describe manganese encephalopathy in patients using ephedrone (methcathinone). The aim of this narrative review of case reports was to relate manganese ion concentrations in peripheral blood to the reported neurological deficits. METHODS International databases, including Thomson (Web of Knowledge), PubMed/Medline, Science Direct, Scopus and Google Scholar were searched for literature items published between 2007 and 2020, in which the authors measured the manganese concentration in patients taking ephedrone. RESULTS We identified 39 patients in two case series comprising of twenty-three and twelve patients, respectively, and four case reports meeting inclusion criteria. The study showed that 93% of them had elevated blood manganese concentration in relation to the accepted norm (>219 nmol/L), and the median was 364 nmol/L. The median duration of ephedrone use in individual groups of patients was approximately 48 months, and it did not show a relationship with the manganese concentration in the blood. A greater percentage of the people with manganese concentration higher than 250 nmol/L exhibited more severe gait, speech and handwriting disorders. The median duration of ephedrone withdrawal was a month in the group of people with the highest level of manganese ions (>500 nmol/L). CONCLUSION Manganese concentrations did not vary with the duration of ephedrone use.
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Affiliation(s)
- Michal Ordak
- Department of Pharmacodynamics, Centre for Preclinical, Research and Technology (CePT), Medical University of Warsaw, Warsaw, Poland
| | - Natalia Sloniewicz
- Department of Pharmacodynamics, Centre for Preclinical, Research and Technology (CePT), Medical University of Warsaw, Warsaw, Poland
| | | | - Elzbieta Muszynska
- Department of Medical Biology, Medical University of Bialystok, Bialystok, Poland
| | - Magdalena Bujalska-Zadrozny
- Department of Pharmacodynamics, Centre for Preclinical, Research and Technology (CePT), Medical University of Warsaw, Warsaw, Poland
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21
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Gandhi D, Rudrashetti AP, Rajasekaran S. The impact of environmental and occupational exposures of manganese on pulmonary, hepatic, and renal functions. J Appl Toxicol 2021; 42:103-129. [PMID: 34237170 DOI: 10.1002/jat.4214] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 12/15/2022]
Abstract
Manganese (Mn) is an essential trace element for humans, but long-term environmental or occupational exposures can lead to numerous health problems. Although many studies have identified an association between Mn exposures and neurological abnormalities, emerging data suggest that occupationally and environmentally relevant levels of Mn may also be linked to multiple organ dysfunction in the general population. In this regard, many experimental and clinical studies provide support for a causal link between Mn exposure and structural and functional changes that are responsible for organ dysfunction in major organs like lung, liver, and kidney. The underlying mechanisms suggested to Mn toxicity include altered activities of the components of intracellular signaling cascades, oxidative stress, apoptosis, affected cell cycle regulation, autophagy, angiogenesis, and an inflammatory response. We further discussed the sources and possible mechanisms of Mn absorption and distribution in different organs. Finally, treatment strategies available for treating Mn toxicity as well as directions for future studies were discussed.
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Affiliation(s)
- Deepa Gandhi
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | | | - Subbiah Rajasekaran
- Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, India
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22
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Studer JM, Kiefer ZE, Goetz BM, Keating AF, Baumgard LH, Rambo ZJ, Schweer WP, Wilson ME, Rapp C, Ross JW. Impact of manganese amino acid complex on tissue-specific trace mineral distribution and corpus luteum function in gilts. J Anim Sci 2021; 99:6274863. [PMID: 33982089 DOI: 10.1093/jas/skab155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/07/2021] [Indexed: 11/14/2022] Open
Abstract
Functional corpora lutea (CL) are required for pregnancy establishment and gestational maintenance in swine, and CL function is susceptible to environmental influences. Manganese (Mn) could be critical in regulating CL function since it is a component of the antioxidant enzyme Mn superoxide dismutase (MnSOD) as well as enzymes involved in cholesterol and steroid hormone synthesis. We hypothesized that a more bioavailable dietary Mn source would increase Mn content in the CL thereby influencing luteal function during the mid-luteal phase of the estrous cycle. Postpubertal gilts (n = 32) were assigned to one of four gestation diets. The control diet (CON) met or exceeded National Research Council (2012) requirements and was formulated to contain 20 parts per million (ppm) of added Mn in the form of Mn sulfate. Three additional diets included 20 (treatment [TRT]1), 40 (TRT2), or 60 (TRT3) ppm of added Mn from a Mn-amino acid complex (Availa-Mn; Zinpro Corporation) instead of Mn sulfate. Dietary treatment began at estrus synchronization onset and continued through 12 days post estrus (dpe) of the ensuing estrous cycle. Blood samples were collected at estrus onset, which was assigned as 0 dpe, as well as 4, 8, and 12 dpe. Gilts were euthanized and tissues were collected at 12 dpe. Serum progesterone (P4) increased (P < 0.01) from 0 to 12 dpe but was unaffected by dietary treatment (P = 0.15) and there was no effect of the interaction between day and treatment (P = 0.85). Luteal Mn content increased (P ≤ 0.05) by 19%, 21%, and 24% in gilts fed TRT1, TRT2, and TRT3, respectively, compared to CON. Luteal P4 concentrations decreased (P = 0.03) 25%, 26%, and 32% in gilts fed TRT1, TRT2, and TRT3, respectively, compared to CON. Relative to CON gilts, CL calcium content decreased (P = 0.02) by 36%, 24%, and 34% for TRT1, TRT2, and TRT3 gilts, respectively. Collectively, these data support the hypothesis that feeding a more bioavailable Mn source increases Mn accumulation in CL tissue. If and how this influences CL function may be related to altered luteal P4 concentrations.
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Affiliation(s)
- Jamie M Studer
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Zoe E Kiefer
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Brady M Goetz
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Aileen F Keating
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Lance H Baumgard
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | | | | | | | | | - Jason W Ross
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
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23
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Ge X, Yang A, Huang S, Luo X, Hou Q, Huang L, Zhou Y, Li D, Lv Y, Li L, Cheng H, Chen X, Zan G, Tan Y, Liu C, Xiao L, Zou Y, Yang X. Sex-specific associations of plasma metals and metal mixtures with glucose metabolism: An occupational population-based study in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:143906. [PMID: 33341635 DOI: 10.1016/j.scitotenv.2020.143906] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Studies with multi-pollutant approach on the relationships between multiple metals and fasting plasma glucose (FPG) are limited. Few studies are available on the potential sex-specific associations between metal exposures and glucose metabolism. We explored the associations between 22 plasma metals and FPG level among the 769 participants from the manganese-exposed workers healthy cohort in China. We applied a sparse partial least squares (sPLS) regression followed by ordinary least-squares regression to evaluate multi-pollutant association. Bayesian kernel machine regression (BKMR) model was used to deal with metal mixtures and evaluate their joint effects on FPG level. In the sPLS model, negative associations on FPG levels were observed for plasma iron (belta = -0.066), cobalt (belta = -0.075), barium (belta = -0.109), and positive associations for strontium (belta = 0.082), and selenium (belta = 0.057) in men, which overlapped with the results among the overall participants. Among women, plasma copper (belta = 0.112) and antimony (belta = 0.137) were positively associated with elevated FPG level. Plasma magnesium was negatively associated with FPG level in both sexes (belta = -0.071 in men and belta = -0.144 in women). The results of overlapped for plasma magnesium was selected as the significant contributor to decreasing FPG level in the multi-pollutant, single-metal, and multi-metal models. BKMR model showed a significantly negative over-all effect of six metal mixtures (magnesium, iron, cobalt, selenium, strontium and barium) on FPG level among the overall participants from all the metals fixed at 50th percentile. In summary, our findings underline the probable role of metals in glucose homeostasis with potential sex-dependent heterogeneities, and suggest more researches are needed to explore the sex-specific associations of metal exposures with risk of diabetes.
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Affiliation(s)
- Xiaoting Ge
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Aimin Yang
- Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Hong Kong, SAR 999077, China
| | - Sifang Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Xiaoyu Luo
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Qingzhi Hou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Lulu Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Yanting Zhou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Defu Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Yingnan Lv
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Longman Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Xiang Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Gaohui Zan
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Yanli Tan
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Chaoqun Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Guangxi Medical University, Nanning 530021, Guangxi, China
| | - Lili Xiao
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning 530021, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning 530021, China; Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning 530021, Guangxi, China; Department of Public Health, School of Medicine, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, China.
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Zhu X, Yang L, He Y, Sun Y, Shi W, Ou C. Liver Function of Male Rats Exposed to Manganese at Different Time Points. Biol Trace Elem Res 2020; 198:224-230. [PMID: 32100273 DOI: 10.1007/s12011-020-02067-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/30/2020] [Indexed: 01/15/2023]
Abstract
As an essential trace element in the human body, manganese (Mn) is involved in many important biochemical reactions. However, excessive exposure to manganese can cause multiple systematic damages to the body. This study aims to investigate the effects of manganese exposure on serum hepatic enzymes in male rats at different time points. After adaptive feeding for 7 days, male Sprague-Dawley (SD) rats were injected intraperitoneally with 30 mg/kg MnCl2·4H2O once a day for 21 days at zeitgeber time point 2 (ZT2), ZT8, ZT14, and ZT20, respectively. We found that short-term repeated exposure to manganese caused slower body weight gain and increased relative liver and spleen weight index in male rats at different time points. Moreover, serum total bile acid (TBA) increased while aspartate aminotransferase (AST) decreased at ZT2, ZT8, and ZT20. Cholinesterase (ChE) decreased at ZT2 and ZT20, lactic dehydrogenase (LDH) decreased at ZT2, ZT14, and ZT20, and acid phosphatase (ACP) decreased at ZT2 and ZT14. Alkaline phosphatase (ALP) decreased at ZT2, ZT14, and ZT20, but increased at ZT8. Alanine amino transferase (ALT) decreased at ZT2 and ZT20, but increased at ZT8. There was a negative correlation between relative liver weight index with AST, ACP, ALP, and LDH, while a positive correlation with TBA. However, relative spleen weight index had a positive correlation with relative liver weight index and TBA, while a negative correlation with ALT, AST, ACP, ALP, LDH, and ChE. Our study shows that the injury of liver function is caused by short-term repeated manganese exposure at different time points. The time effect should be considered in manganese toxicity evaluation.
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Affiliation(s)
- Xiaonian Zhu
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China
| | - Lin Yang
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China
| | - Yonghua He
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China
| | - Yi Sun
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China
| | - Wenxiang Shi
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China
| | - Chaoyan Ou
- Department of Health Toxicology, School of Public Health, Guilin Medical University, 109 Huancheng North Road 2, Guilin, Guangxi, 541004, People's Republic of China.
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Low serum 25-hydroxyvitamin D levels are associated with liver injury markers in the US adult population. Public Health Nutr 2020; 23:2915-2922. [PMID: 32576302 DOI: 10.1017/s1368980020000348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To examine the associations between serum 25-hydroxyvitamin D (25(OH)D) levels and serum liver enzymes in a representative sample of US adults. DESIGN The cross-sectional study sample consisted of 24 229 adults with data on serum 25(OH)D levels and serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and gamma-glutamyl transaminase (GGT) concentrations, in addition to data on other potential confounders. Multivariate logistic regression and linear regression were applied to assess the associations between serum 25(OH)D levels and ALT, AST, ALP and GGT concentrations. SETTING The National Health and Nutrition Examination Survey, 2001-2006. PARTICIPANTS The cross-sectional study sample consisted of 24 229 adults. RESULTS We found a significant association between low serum 25(OH)D levels (<30 nmol/l) and ALP levels in all participants (OR 2·67; 95 % CI 1·98, 3·59; P < 0·001), a confirmed healthy population (OR 3·02; 95 % CI 2·25, 4·07; P < 0·001) and individuals with viral hepatitis (OR 2·87; 95 % CI 1·52, 5·44; P = 0·006) compared with those who had normal 25(OH)D levels (>50 nmol/l). Moreover, in both the logistic regression and linear regression, the associations between 25(OH)D levels and ALP levels were stronger in the subgroups with obesity. No association was present between ALT, AST or GGT levels and serum 25(OH)D levels in this population. CONCLUSIONS The results of the present study provide epidemiological evidence that vitamin D deficiency is associated with liver ALP levels in humans. This finding suggests a potential adverse effect of low 25(OH)D levels on human liver function. However, the underlying mechanisms still need further investigation.
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Huang S, Liu Z, Ge X, Luo X, Zhou Y, Li D, Li L, Chen X, Huang L, Cheng H, Hou Q, Zan G, Tan Y, Liu C, Zou Y, Yang X. Occupational exposure to manganese and risk of creatine kinase and creatine kinase-MB elevation among ferromanganese refinery workers. Am J Ind Med 2020; 63:394-401. [PMID: 32112445 DOI: 10.1002/ajim.23097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Elevated exposure to manganese (Mn) could induce cardiovascular dysfunction. However, limited research is available on the effects of occupational Mn exposure on myocardial enzymes. We aimed to evaluate the relationships between Mn exposure and myocardial enzyme elevation among Mn-exposed workers. METHODS Data were from a follow-up investigation of a Mn-exposed workers healthy cohort in 2017. A total of 744 workers were divided into low-exposure and high-exposure groups according to Mn time-weighted average (Mn-TWA) of less than or equal to 0.15 mg/m3 or greater than 0.15 mg/m3 , respectively. Serum levels of myocardial enzymes, including creatine kinase (CK) and creatine kinase-MB (CK-MB), lactic dehydrogenase, α-hydroxybutyrate dehydrogenase, and aspartate transaminase, were assessed, as well as airborne Mn exposure levels. RESULTS After adjustment for sex, body mass index, seniority, education, current smoking status, current drinking status, and hypertension, Mn-TWA levels were positively associated with the risk of CK elevation (odds ratio [OR] = 1.47 (95% confidence interval [CI]: 1.18-1.83) per interquartile range [IQR] increase), and risk of CK-MB elevation [OR = 1.57 (95% CI: 1.03-2.38) per IQR increase]. In a stratified analysis, Mn-TWA levels were positively correlated with CK elevation in workers of seniority greater than 19 years, male workers, current smokers, and drinkers. CONCLUSION Our results suggest that occupational exposure to Mn is associated with increased risk of CK and CK-MB elevation. The potential mechanisms of the associations between airborne exposure to Mn and increased risk of these myocardial enzyme elevations warrant further investigation.
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Affiliation(s)
- Sifang Huang
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Zhenfang Liu
- Department of HematologyThe First Affiliated Hospital of Guangxi Medical UniversityNanning Guangxi China
| | - Xiaoting Ge
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Xiaoyu Luo
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Yanting Zhou
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Defu Li
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Longman Li
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Xiang Chen
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Lulu Huang
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Qingzhi Hou
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Gaohui Zan
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Yanli Tan
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Chaoqun Liu
- Department of Nutrition and Food Hygiene, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
| | - Yunfeng Zou
- Department of Toxicology, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanning Guangxi China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public HealthGuangxi Medical UniversityNanning Guangxi China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent DiseasesGuangxi Medical UniversityNanning Guangxi China
- Center for Genomic and Personalized MedicineGuangxi Medical UniversityNanning Guangxi China
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Ge X, Liu Z, Hou Q, Huang L, Zhou Y, Li D, Huang S, Luo X, Lv Y, Li L, Cheng H, Chen X, Zan G, Tan Y, Liu C, Zou Y, Yang X. Plasma metals and serum bilirubin levels in workers from manganese-exposed workers healthy cohort (MEWHC). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113683. [PMID: 31838386 DOI: 10.1016/j.envpol.2019.113683] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/18/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
Few studies specifically address the possible associations between multiple-metal exposures and liver damage among the occupational population. This study aimed to explore the cross-sectional relationships of plasma metals with liver function parameters. For 571 on-the-spot workers in the manganese-exposed workers healthy cohort (MEWHC), we determined liver function parameters: total bilirubin (TBILI), direct bilirubin (DBILI), indirect bilirubin (IBILI), alanine transaminase (ALT) and aspartate transaminase (AST). Total concentrations of 22 plasma metals were measured by ICP-MS. The LASSO (least absolute shrinkage and selection operator) penalized regression model was applied for selecting plasma metals independently associated with liver function parameters. Multiple linear regression analyses and restricted cubic spline (RCS) were utilized for identifying the exposure-response relationship of plasma metals with liver function parameters. After adjusting for covariates and selected metals, a 1-SD increase in log-10 transformed levels of iron was associated with increases in the levels of TBILI, DBILI and IBILI by 20.3%, 12.1% and 23.7%, respectively; similar increases in molybdenum for decreases in levels of TBILI, DBILI and IBILI by 6.1%, 2.6% and 8.3%, respectively. The effect of a 1-SD increase in plasma copper corresponded decreases of 3.2%, 3.4% and 5.0% in TBILI, AST and ALT levels, respectively. The spline analyses further clarified the non-linear relationships between plasma iron and bilirubin whilst negative linear relationships for plasma molybdenum and bilirubin. Plasma iron was positively whilst plasma molybdenum was negatively associated with increased serum bilirubin levels. Further studies are needed to validate these associations and uncover the underlying mechanisms.
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Affiliation(s)
- Xiaoting Ge
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Zhenfang Liu
- Hematology Department, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Qingzhi Hou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Lulu Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Yanting Zhou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Defu Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Sifang Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Xiaoyu Luo
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Yingnan Lv
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Longman Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Xiang Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Gaohui Zan
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Yanli Tan
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Chaoqun Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, 530021, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, 530021, China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, 530021, China; Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.
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Li D, Ge X, Liu Z, Huang L, Zhou Y, Liu P, Qin L, Lin S, Liu C, Hou Q, Li L, Cheng H, Ou S, Wei F, Shen Y, Zou Y, Yang X. Association between long-term occupational manganese exposure and bone quality among retired workers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:482-489. [PMID: 31797269 DOI: 10.1007/s11356-019-06694-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Despite well documents for manganese-induced neurological deficits, limited researches are available for effects of manganese (Mn) exposure on the bone. Here we aimed to explore the associations between long-term occupational Mn exposure and bone quality among retired workers. We conducted a cross-sectional study of 304 exposed subjects (n, male = 161 and female = 143) and 277 control retired workers (n, male = 65 and female = 212) recruited from a ferromanganese refinery. Self-reported occupation types were used as exposure classification confirmed by expert consultation. Bone quality was measured by quantitative ultrasound (QUS). In sex-stratified analyses throughout, stiffness index (SI) and T-score levels of the participants in the highest exposed group [tertile 3 of Mn cumulative exposure index (Mn-CEI)] were significantly lower as compared with the control group among female workers (SI, mean, 61.60 vs. 68.17; T-score, mean, -3.01 vs. -2.34, both P < 0.05). In addition, SI and T-score were found to be negatively associated with Mn-CEI only in the highest exposure group as compared with the female controls (both P = 0.01). However, we did not find the significant difference for SI or T-score among the male subjects in exposure models and the male controls (P > 0.05). Our results suggest that female retired workers in the highest Mn-exposed model (tertile 3 of Mn-CEI) potentially experience a higher risk of developing osteoporosis compared with the female controls. Further investigations on possible mechanisms on bone quality alteration are needed in the future.
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Affiliation(s)
- Defu Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Xiaoting Ge
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Zhenfang Liu
- Hematology Department, First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Lulu Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Yanting Zhou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Peng Liu
- Department of Human Anatomy, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Lian Qin
- Department of Neurology, The Second Affiliated Hospital of Guangxi University of Science and Technology, Liuzhou, 545000, Guangxi, China
| | - Suzhen Lin
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Science and Technology, Liuzhou, 545002, Guangxi, China
| | - Chaoqun Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Qingzhi Hou
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Longman Li
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Songfeng Ou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Fu Wei
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, 530021, China
| | - Yuefei Shen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, 530021, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, 530021, China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China.
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, Guangxi Medical University, Nanning, 530021, China.
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, Guangxi, China.
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Zeng Z, Pan Y, Wu W, Li L, Wu Z, Zhang Y, Deng B, Wei S, Zhang W, Lin F, Song Y. Myocardial hypertrophy is improved with berberine treatment via long non-coding RNA MIAT-mediated autophagy. J Pharm Pharmacol 2019; 71:1822-1831. [PMID: 31612504 DOI: 10.1111/jphp.13170] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 09/01/2019] [Indexed: 01/01/2023]
Abstract
Abstract
Objectives
This study aimed to evaluate berberine (BBR) effects on myocardial hypertrophy (MH) and associated mechanisms.
Methods
BBR effects on MH were evaluated in rats with constriction of abdominal aorta (CAA). qRT-PCR assay was used to measure MH-related genes, long non-coding RNAs (lncRNAs) and autophagy-related genes expressions. Western blot was performed to detect autophagy markers expression. Filamentous actin and phalloidin expressions were detected using immunofluorescence assay.
Key findings
BBR significantly attenuated CAA-induced MH and cardiomyocyte enlargement. CAA upregulated β myosin heavy chain and atrial natriuretic peptide expressions in heart tissues, which was attenuated by BBR. BBR suppressed myocardial infarction associated transcript (MIAT) expression in rats with CAA. p62 mRNA expression was upregulated and beclin1 and autophagy related 5 were downregulated in CAA versus control groups. The effects were abolished by BBR. In vitro studies showed that BBR ameliorated angiotensin II-induced MH and attenuated Ang II-induced MIAT expression in H9C2 cells. Expressions of phosphorylated mTOR, phosphorylated AMPK and LC3 were upregulated in H9C2 cells after Ang II stimulation, and the effects were abolished by BBR.
Conclusions
BBR exerted beneficial effects on MH induced by CCA, and the mechanisms were associated with decreased MIAT expression and enhanced autophagy.
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Affiliation(s)
- Zhicong Zeng
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Yan Pan
- Diabetes Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Wei Wu
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liang Li
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
- Graduate School, Guangzhou University of TCM, Guangzhou, China
| | - Zijun Wu
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Yuangui Zhang
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Bin Deng
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Shanyan Wei
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Weiwei Zhang
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Fengxia Lin
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
| | - Yinzhi Song
- Cardiology Department, Bao'an TCM Hospital Group, Shenzhen, China
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Nkpaa KW, Adedara IA, Amadi BA, Wegwu MO, Farombi EO. Ethanol via Regulation of NF-κB/p53 Signaling Pathway Increases Manganese-Induced Inflammation and Apoptosis in Hypothalamus of Rats. Biol Trace Elem Res 2019; 190:101-108. [PMID: 30284675 DOI: 10.1007/s12011-018-1535-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 09/25/2018] [Indexed: 01/07/2023]
Abstract
The diet is a major route of manganese (Mn) exposure for humans. Interestingly, several epidemiological data demonstrated an increase in the incidence of alcohol consumption globally. Chemical-chemical interaction subsequent to chemical mixtures exposure may result in a synergism or antagonism effects. The present study investigated the influence of co-exposure to ethanol (EtOH) and Mn on inflammation and apoptosis in the hypothalamus of rats. The study consisted of five groups of rats that were exposed to drinking water alone, EtOH alone at 5 g/kg, Mn alone at 30 mg/kg or co-expose with EtOH at 1.25 and 5 g/kg body weight by oral gavage for 35 consecutive days. The results indicated that the significant (p < 0.05) increases in pro-inflammatory cytokines, namely tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β) as well as cyclooxygenase-2 (COX-2) and nuclear factor kappa B (NF-κB) activation in the hypothalamus following individual exposure to Mn and EtOH to rats were intensified in the co-exposure group. Moreover, immunohistochemistry analysis showed marked decrease in B cell lymphoma-2 (Bcl-2) protein expression as well as the increases in the apoptotic proteins, namely Bax and caspase-3 along with p53 in the hypothalamus of rats treated with Mn or EtOH alone were intensified in the co-exposure group. Taken together, these findings highlight that EtOH exacerbated the induction of inflammatory and apoptotic biomarkers via regulation of NF-κB/p53 signaling pathways in the hypothalamus of rats. These alterations may have profound disrupting effects on the hypothalamus functions such as impairment of it metabolic and autonomic nervous system functions.
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Affiliation(s)
- Kpobari W Nkpaa
- Environmental Toxicology Unit, Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B 5323, Choba, Rivers State, Nigeria.
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Benjamin A Amadi
- Environmental Toxicology Unit, Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B 5323, Choba, Rivers State, Nigeria
| | - Matthew O Wegwu
- Environmental Toxicology Unit, Department of Biochemistry, Faculty of Science, University of Port Harcourt, P.M.B 5323, Choba, Rivers State, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
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Bahadori E, Farjami Z, Rezayi M, Lngari H, Darroudi M, Avan A, Ghayour-Mobarhan M. Recent advances in nanotechnology for the treatment of metabolic syndrome. Diabetes Metab Syndr 2019; 13:1561-1568. [PMID: 31336522 DOI: 10.1016/j.dsx.2019.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 03/05/2019] [Indexed: 12/13/2022]
Abstract
Metabolic syndrome is a main clinical challenge of global health which is growing universally. It would be resulted from over-consumption of energy, increased obesity, and lack of movement during life. The metabolic syndrome causes a five-fold increase in the risk of type 2 diabetes mellitus and a double increase in the risk of rising cardiovascular disease over the next 5-10 years. Based on this, more attention has been drawn to the diagnosis and treatment options of this disease. Nanotechnology is one of the preferred methods for improving this disease. This way is a natural development in many health domains, including synthetic and nanostructures. The use of nanoparticles with the purpose of increase the effectiveness of treatment, decrease the side effects and the amount of drug usage, through their small size, permeability and maintenance strength lead to their absorption by target organs. Meanwhile, different nanoparticles with consumption values and particle size have been investigated.
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Affiliation(s)
- Effat Bahadori
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Farjami
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Rezayi
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hadis Lngari
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Darroudi
- Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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Follow-up of the manganese-exposed workers healthy cohort (MEWHC) and biobank management from 2011 to 2017 in China. BMC Public Health 2018; 18:944. [PMID: 30068329 PMCID: PMC6090756 DOI: 10.1186/s12889-018-5880-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 07/24/2018] [Indexed: 12/31/2022] Open
Abstract
Background Long-term excess exposure to environmental manganese (Mn) can lead to multi-system damage, especially in occupational populations. Therefore, we established a manganese-exposed workers healthy cohort (MEWHC), focusing on the systemic health effects related to Mn exposure. Here, we aimed to describe the follow-up activity for the MEWHC study and establish a standardized biological sample bank for the scientific management of high-quality biospecimens and the attached data from 2011 to 2017. Methods Baseline examinations for onsite workers were conducted, and the biobank for the MEWHC was first established in 2011; follow-up examinations occurred four times between July 2012 and November 2017. All questionnaires, clinical data and biological samples were routinely collected during each follow-up activity. Additional workers were recruited in 2016, which further enriched the resources of the biobank. Results A total of 2359 onsite workers and 612 retired workers at a ferromanganese refinery were enrolled in the prospective cohort, and their biological samples were obtained in the preliminary baseline survey and the follow-up investigation, including 2971 blood and urine samples from the cohort. In addition, 1524 hair samples, 1404 nail (toe and finger nails) and 1226 fecal samples were also collected. All specimens were preserved in the biobank, and the data were scientifically managed using a computer system. Conclusions The MEWHC study in China provides an effective way to obtain biological samples such as plasma, DNA, hair and urine for storage in a biobank for further study. The standardized management of various samples is crucial for accessing high-quality biospecimens. Electronic supplementary material The online version of this article (10.1186/s12889-018-5880-0) contains supplementary material, which is available to authorized users.
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The Essential Element Manganese, Oxidative Stress, and Metabolic Diseases: Links and Interactions. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:7580707. [PMID: 29849912 PMCID: PMC5907490 DOI: 10.1155/2018/7580707] [Citation(s) in RCA: 253] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 02/10/2018] [Accepted: 03/12/2018] [Indexed: 12/11/2022]
Abstract
Manganese (Mn) is an essential element that is involved in the synthesis and activation of many enzymes and in the regulation of the metabolism of glucose and lipids in humans. In addition, Mn is one of the required components for Mn superoxide dismutase (MnSOD) that is mainly responsible for scavenging reactive oxygen species (ROS) in mitochondrial oxidative stress. Both Mn deficiency and intoxication are associated with adverse metabolic and neuropsychiatric effects. Over the past few decades, the prevalence of metabolic diseases, including type 2 diabetes mellitus (T2MD), obesity, insulin resistance, atherosclerosis, hyperlipidemia, nonalcoholic fatty liver disease (NAFLD), and hepatic steatosis, has increased dramatically. Previous studies have found that ROS generation, oxidative stress, and inflammation are critical for the pathogenesis of metabolic diseases. In addition, deficiency in dietary Mn as well as excessive Mn exposure could increase ROS generation and result in further oxidative stress. However, the relationship between Mn and metabolic diseases is not clear. In this review, we provide insights into the role Mn plays in the prevention and development of metabolic diseases.
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Mousavi Z, Hassanpourezatti M, Najafizadeh P, Rezagholian S, Rhamanifar MS, Nosrati N. Effects of Subcutaneous Injection MnO 2 Micro- and Nanoparticles on Blood Glucose Level and Lipid Profile in Rat. IRANIAN JOURNAL OF MEDICAL SCIENCES 2016; 41:518-524. [PMID: 27853332 PMCID: PMC5106567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND The use of nanotechnology has led to rapid growth in various areas. Thus, health and safety issues of nanoparticles (NPs) should be promptly addressed. Manganese oxide (MnO2) nanoparticles (NPs) are typically used for biomedical and industrial applications. However, characterizing the potential human health effects of MnO2 NPs is required before fully exploiting these materials. The aim of this study was to investigate the toxicity of MnO2 micro- and nanoparticles on blood glucose level and lipid profile in male Wistar rats. METHODS A total of 105 rats were divided into one control and two experimental groups. Each experimental group received a single subcutaneous injection of MnO2 micro- and nanoparticles (100 μg/kg), respectively, every two weeks for 14 weeks. Their blood glucose, cholesterol, triglycerides, LDL, and HDL levels were then measured. The data presented as mean±SEM and compared with the repeated measures using the Prism statistical software (version 6.0). RESULTS Biochemical assessment in plasma samples showed that MnO2 micro- and nanoparticles injection significantly (P<0.01) increased the plasma glucose and cholesterol levels in all and few weeks, respectively. MnO2 nanoparticles significantly (P<0.01) decreased the HDL level in weeks 6, 12, and 14, but MnO2 microparticles decreased the HDL level only in week 12. In both MnO2 micro- and nanoparticles groups, LDL alterations were near to the control group, except for week 10. However, the same treatment had no effect on triglycerides concentrations compared to the control group. CONCLUSION Our results show that exposure to nanosized particles at subchronic doses caused adverse changes in animal biochemical profiles, especially in glucose level. It seems that the high oxidative power of these particles is the main reason for these disturbances.
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Affiliation(s)
- Zahra Mousavi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran,Correspondence: Zahra Mousavi, PhD; Pharmaceutical Sciences Branch, Islamic Azad University, No 99, Yakhchal, Gholhak, Shariati St., Tehran, Iran Tel: +98 21 22640051-5 /
| | | | - Parvaneh Najafizadeh
- Department of Pharmacology, Iran University of Medical Sciences, Tehran, Iran,Young Researchers and Elite Club, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Shiva Rezagholian
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | | | - Nahid Nosrati
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
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Dey T, Gogoi K, Unni B, Bharadwaz M, Kalita M, Ozah D, Kalita M, Kalita J, Baruah PK, Bora T. Role of environmental pollutants in liver physiology: special references to peoples living in the oil drilling sites of Assam. PLoS One 2015; 10:e0123370. [PMID: 25874634 PMCID: PMC4395329 DOI: 10.1371/journal.pone.0123370] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 02/25/2015] [Indexed: 11/18/2022] Open
Abstract
The populations residing near polluted sites are more prone to various types of diseases. The important causes of air pollution are the suspended particulate matter, respirable suspended particulate matter, sulfur dioxide and nitrogen dioxide. As limited information is available enumerating the effect of these pollutants on liver physiology of the population living near the polluted sites; in the present study, we tried to investigate their effect on liver of the population residing near the oil drilling sites since birth. In this study, a randomly selected 105 subjects (46 subjects from oil drilling site and 61 subjects from control site) aged above 30 years were taken under consideration. The particulate matter as well as the gaseous pollutants, sulfur dioxide and nitrogen dioxide, were analyzed through a respirable dust sampler. The level of alkaline phosphatase, alanine transaminase and aspartate transaminase enzymes in serum were measured by spectrophotometer. The generalized regression model studies suggests a higher concentration of respirable suspended particulate matter, suspended particulate matter and nitrogen dioxide lowers the alkaline phosphatase level (p<0.0001) by 3.5 times (95% CI 3.1-3.9), 1.5 times (95% CI 1.4 - 1.6) and 12 times (95% CI 10.74 -13.804), respectively in the exposed group. The higher concentration of respirable suspended particulate matter and nitrogen dioxide in air was associated with increase in alanine transaminase level (p<0.0001) by 0.8 times (95% CI 0.589-1.049) and by 2.8 times (95% CI 2.067-3.681) respectively in the exposed group. The increase in nitrogen dioxide level was also associated with increase in aspartate transaminase level (p<0.0001) by 2.5 times (95% CI 1.862 – 3.313) in the exposed group as compared to control group. Thus, the study reveals that long-term exposure to the environmental pollutants may lead to liver abnormality or injury of populations living in polluted sites.
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Affiliation(s)
- Tapan Dey
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Kabita Gogoi
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Balagopalan Unni
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
- * E-mail:
| | - Moonmee Bharadwaz
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Munmi Kalita
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Dibyajyoti Ozah
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Manoj Kalita
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Jatin Kalita
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Pranab Kumar Baruah
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
| | - Thaneswar Bora
- Biotechnology Division, Council of Scientific & Industrial Research—North-East Institute of Science and Technology, Jorhat, Assam, India
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Wang F, Zou Y, Shen Y, Zhong Y, Lv Y, Huang D, Chen K, Li Q, Qing L, Xia B, Su C, Ma S, Yang X. Synergistic impaired effect between smoking and manganese dust exposure on pulmonary ventilation function in Guangxi manganese-exposed workers healthy cohort (GXMEWHC). PLoS One 2015; 10:e0116558. [PMID: 25664879 PMCID: PMC4321994 DOI: 10.1371/journal.pone.0116558] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 12/10/2014] [Indexed: 11/18/2022] Open
Abstract
Purpose The aims of this study were to investigate the effects of manganese (Mn) dust exposure on lung functions and evaluate the potential synergistic effect between smoking and Mn dust exposure among refinery workers. Methods A retrospective study including 1658 workers in a ferromanganese refinery was conducted, with subjects who were from the Guangxi manganese-exposed workers healthy cohort (GXMEWHC). Based on the Mn manganese cumulative exposure index (Mn-CEI), all subjects were divided into the low exposure group (n = 682) and the high exposure group (n = 976). A pulmonary function test was performed using an electronic spirometer, including the values and percentages of FVC, FEV1, FEV1/FVC, MMEF, PEFR, MVV, respectively. Results No significant effect of Mn dust exposure on the pulmonary function was found in the female workers (all p>0.05). However, there was an obvious decrease in the male workers in the high exposure group compared with those in the low exposure group (FVC -60 ml, FEV1 -120 ml, MMEF -260 ml/s, MVV -5.06 L, all p<0.05). In the high exposure group, the reduction in FVC% predicted, MMEF and MMEF% predicted was 1.0%, 210 mL/s, and 4.9%, respectively. In particular, among the exposed subjects smokers had a statistically significant decrease in lung function compared with non-smokers and the reduction in FVC% predicted, MMEF and MMEF% predicted was 1.0%, 210 mL/s, and 4.9%, respectively (p<0.05). Partial correlation analysis showed that there was also negative correlation between Mn-CEI and decreased changes in MMEF (r = -0.159, p = 0.018) and also MMEF% predicted (r = -0.163, p = 0.015). Conclusions Mn dust can impair the pulmonary ventilation function of male workers but not females, and individual smoking habits and manganese exposure had a synergistic effect on the lung function decrease.
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Affiliation(s)
- Fenfen Wang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yuefei Shen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yaoqiu Zhong
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yingnan Lv
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Damin Huang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Kangcheng Chen
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Qin Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Li Qing
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Bing Xia
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Cheng Su
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Shuyan Ma
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaobo Yang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
- * E-mail:
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The toxic effect of manganese on the acetylcholinesterase activity in rat brains. J Toxicol 2014; 2014:946372. [PMID: 25246936 PMCID: PMC4160610 DOI: 10.1155/2014/946372] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 08/13/2014] [Accepted: 08/13/2014] [Indexed: 12/11/2022] Open
Abstract
Manganese (Mn) is a naturally occurring element and an essential nutrient for humans and animals. However, exposure to high levels of Mn may cause neurotoxic effects. Accumulation of manganese damages central nervous system and causes Parkinson's disease-like syndrome called manganism. Mn neurotoxicity has been suggested to involve an imbalance between the DAergic and cholinergic systems. The pathological mechanisms associated with Mn neurotoxicity are poorly understood, but several reports have established it is mediated by changing of AChE activity that resulted in oxidative stress. Therefore we focused the effect of Mn in AChE activity in the rat's brain by MnCl2 injection intraperitoneally and analyzed their brains after time intervals. This study used different acute doses in short time course and different chronic doses at different exposing time to investigate which of them (exposing dose or time) is more important in Mn toxic effect. Results showed toxic effect of Mn is highly dose dependent and AChE activity in presence of chronic dose in 8 weeks reaches acute dose in only 2 days.
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Lv Y, Zou Y, Liu J, Chen K, Huang D, Shen Y, Zhong Y, Liu Z, Jiang B, Li Q, Qing L, Zhang W, Chen L, Wang F, Xia B, Yang L, Yang X. Rationale, design and baseline results of the Guangxi manganese-exposed workers healthy cohort (GXMEWHC) study. BMJ Open 2014; 4:e005070. [PMID: 24993760 PMCID: PMC4091505 DOI: 10.1136/bmjopen-2014-005070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE To determine the relationship between biomarkers of exposure, disease and susceptibility, and early health effects and long-term diseases related to occupational manganese (Mn) exposure. DESIGN Baseline survey of a longitudinal cohort study of workers in a ferromanganese refinery. PARTICIPANTS A total of 1888 individuals (1197 men, 691 women; average seniority 15.34 years) were enrolled in the Guangxi manganese-exposed workers healthy cohort (GXMEWHC) study. Participants were between 18 and 60 years of age (mean 40.31 years), had worked in the ferromanganese refinery for at least 1 year and lived in the local area. RESULTS The GXMEWHC study included a baseline survey. Participants were divided into four groups according to manganese (Mn) cumulative exposure index (Mn-CEI) levels: an internal control group (Mn-CEI <1.0 mg/m(3) year), a low exposure group (1.0 mg/m(3) year≤Mn-CEI<2.0 mg/m(3) year), a medium exposure group (2.0 mg/m(3) year≤Mn-CEI<5.0 mg/m(3) year) and a high exposure group (Mn-CEI≥5.0 mg/m(3) year). Genome-wide association studies of quantitative trait loci and binary trait loci in 500 Mn-exposed workers were performed using Illumina Infinium HumanExome BeadChip arrays. Stored plasma, DNA, hair and urine are available for further study. Participants will be followed up every 3 years. CONCLUSIONS The GXMEWHC study provides abundant data for exploring the systemic health effects of occupational Mn exposure using biomarkers of exposure, disease and susceptibility.
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Affiliation(s)
- Yingnan Lv
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Jing Liu
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Kangcheng Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Damin Huang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yuefei Shen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yaoqiu Zhong
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Zhihao Liu
- Baise Center for Disease Control and Prevention, Baise, Guangxi, China
| | - Bei Jiang
- Baise Center for Disease Control and Prevention, Baise, Guangxi, China
| | - Qin Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Li Qing
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Wei Zhang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lang Chen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Fenfen Wang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Bing Xia
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Li Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
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Zou Y, Qing L, Zeng X, Shen Y, Zhong Y, Liu J, Li Q, Chen K, Lv Y, Huang D, Liang G, Zhang W, Chen L, Yang Y, Yang X. Cognitive function and plasma BDNF levels among manganese-exposed smelters. Occup Environ Med 2014; 71:189-94. [PMID: 24415644 DOI: 10.1136/oemed-2013-101896] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
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Babadi VY, Sadeghi L, Amraie E, Rezaei M, Malekirad AA, Nejad MA. Manganese toxicity in the central nervous system: Decreeing of catecholamine in rat’s brains. Health (London) 2013. [DOI: 10.4236/health.2013.512292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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