1
|
Hızlı S, Karaoğlu AG, Gören AY, Kobya M. Identifying Geogenic and Anthropogenic Aluminum Pollution on Different Spatial Distributions and Removal of Natural Waters and Soil in Çanakkale, Turkey. ACS OMEGA 2023; 8:8557-8568. [PMID: 36910959 PMCID: PMC9996766 DOI: 10.1021/acsomega.2c07707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
The Çanakkale-Kirazlı region (Turkey) is enriched with minerals, especially aluminum (Al), which dangerously get transported into aquatic media due to several mining and geological activities in recent years. In this study, Al and other potentially toxic metals (PTMs) including B, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Si, and Zn, in both water and soil samples, were measured for quality determination. Selected metals were also analyzed by the enrichment factor (EF), the geoaccumulation index (I geo), the contamination factor (CF), and the pollution load index (PLI) to evaluate both water and soil pollution geogenically or anthropogenically. Also, the metals were clustered to support the pollution source with Pearson's correlation, principal component analysis (PCA), and hierarchical cluster analysis (HCA). Forty-five natural water samples and 12 soil samples were collected spatially. To perform pollution assessment, two fundamental treatment processes to remove Al pollution from the sample including the highest Al concentration (38.38 mg/L) in water were applied: (1) precipitation with pH adjustment and (2) removal with ion exchange. The pH values of water samples were changed in the range of 3-9 to test the dissolution of Al. The results demonstrated that the study area was mostly under the influence of geogenic aluminum pollution.
Collapse
Affiliation(s)
- Sezin Hızlı
- Department
of Environmental Engineering, Gebze Technical
University, 41400 Gebze, Turkey
| | - Aybike Gül Karaoğlu
- Department
of Environmental Engineering, Gebze Technical
University, 41400 Gebze, Turkey
| | - Ayşegül Yağmur Gören
- Department
of Environmental Engineering, Izmir Institute
of Technology, 35430 Urla, İzmir, Turkey
| | - Mehmet Kobya
- Department
of Environmental Engineering, Gebze Technical
University, 41400 Gebze, Turkey
- Department
of Environmental Engineering, Kyrgyz-Turkish
Manas University, Bishkek 720044, Kyrgyzstan
| |
Collapse
|
2
|
A systematic study on occurrence, risk estimation and health implications of heavy metals in potable water from different sources of Garhwal Himalaya, India. Sci Rep 2022; 12:20419. [PMID: 36443361 PMCID: PMC9705413 DOI: 10.1038/s41598-022-24925-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
The occurrence of heavy metals (HMs) in drinking water has been a critical water quality concern for a long time and can compromise its aesthetic value to the larger extent. Chronic exposure of human beings to these toxic and non-toxic HMs through water ingestion can result in significant health risks. To assess these associated health risks, the present study was planned, designed and carried out for analyses of nine HMs namely, Al, Cr, Mn, Co, Ni, Cu, Zn, Cd and Pb in the potable water samples collected from different sources located across the Mandakini valley of Garhwal Himalaya, India using Inductively Coupled Plasma Mass Spectrometry. The measured values of Al, Cr, Mn, Co, Ni, Cu, Zn, Cd and Pb were found in the range of BDL-27.4 µg l-1, 0.26-4.5 µg l-1, BDL-139 µg l-1, 0.02-0.9 µg l-1, 0.4-5.5 µg l-1, 0.07-9.2 µg l-1, BDL-4164 µg l-1, BDL-0.8 µg l-1, and BDL-11.2 µg l-1, respectively. The observed values of analyzed HMs except Zn and Pb were found below the reference values prescribed by the WHO, USEPA and BIS. In addition, Zn concentration exceeded its maximum permissible limit (4000 µg l-1) recommended by WHO for infants at one station only. The observed indices show that there are no health risks from HMs contamination via drinking water in the region. Moreover, the estimated hazard quotients for children and adults also revealed no potential health risks. The results of present study will be useful as baseline data for state and national regulatory agencies.
Collapse
|
3
|
Qiu K, Yang D, Zhu X, Sui H, Wu G. Survey of six metal contaminants and impurities and eleven metals and alloy components released from stainless-steel sheets on the Chinese market. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:2091-2101. [PMID: 34415827 DOI: 10.1080/19440049.2021.1964700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The release of metal elements from stainless-steel products in contact with food may endanger human health. To protect human health, different countries or international organisations have formulated corresponding regulations or technical guidelines. Limits for only five metal elements are stipulated in the China National Food Safety Standard (GB 4806.9) and food simulants and test conditions are fixed regardless of the actual use condition. In this study, inductively coupled plasma mass spectroscopy and inductively coupled plasma optical emission spectroscopy were used to measure the concentrations of six metal contaminants and impurities and 11 metals and alloy component released from stainless-steel sheets on Chinese market. The effects were also investigated on metal release of six grades (201, 202, 304, 430, 443, and 30Cr13) and 6 exposure conditions (food simulant 5 g L-1 citric acid or 4 vol% acetic acid, contact temperature 70 °C or 100 °C, and contact time 2 h, 0.5 h, or 0.5 h followed by ambient temperature for 24 h). For reusable stainless-steel sheets, especially for grade 30Cr13, it was essential to perform three consecutive release tests to check compliance. However, there was no need to conduct three consecutive release tests for the other five grades if the results of the first test met the regulations. It was recommended that 5 g L-1 citric acid should be used as food simulant and contact temperature and time should be based on the actual using conditions. No relationships were found between metal release amounts and contact test temperature or time. The specific release limits for Pb, Cr, As, Cd, and Ni should be lowered and Al, Mn, and Fe be added in GB 4806.9. The results of this study can be a reference for further analysis of the release behaviour of metal elements in actual stainless-steel products.
Collapse
Affiliation(s)
- Kai Qiu
- Department of Standard Information Research Development, China National Research Institute of Food & Fermentation Industries Co., Ltd, Beijing, China
| | - Daoyuan Yang
- Division III of Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Xiaoyan Zhu
- Laboratory of Food Contact Material Testing Center, Ningbo Customs District Technology Center, Ningbo, China
| | - Haixia Sui
- Division III of Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Gang Wu
- Department of Standard Information Research Development, China National Research Institute of Food & Fermentation Industries Co., Ltd, Beijing, China
| |
Collapse
|
4
|
Bagepally BS, Balachandar R, Kalahasthi R, Tripathi R, Haridoss M. Association between aluminium exposure and cognitive functions: A systematic review and meta-analysis. CHEMOSPHERE 2021; 268:128831. [PMID: 33187649 DOI: 10.1016/j.chemosphere.2020.128831] [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: 08/11/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Chronic Aluminium (Al) exposure is reported to be linked with neuro-cognitive impairment. However, there is limited synthesized information on the role of chronic Al exposure on individual cognitive domains. This knowledge gap is explored here by systematic review and meta-analysis of the published literature. METHODS Observational studies that reported the association between Al exposure and cognitive functions were systematically searched in PubMed, Scopus and Embase databases since inception to June 2019 and updated on September 2020. PRISMA guidelines were adhered in this study. Meta-analysis was performed using a random-effect model if the included studies exhibited heterogeneity, in the absence of heterogeneity fixed effect model was used. Heterogeneity was assessed using Cochran-Q test and I2 statistic. Risk of bias was assessed using the risk of bias in non-randomized studies of exposures. Sub-group analysis and meta regression analysis were explored. RESULTS Twenty-three studies including 1781 Al exposed and 1186 unexposed were part of the final results. The pooled standardized mean difference of global cognitive scores (-0.65, 95%CI: -1.09 to -0.22, I2 = 91.09%), memory (-0.45, 95% CI: -0.69 to -0.21, I2 = 81.67%), working memory (-0.3, 95%CI: -0.45 to -0.15, I2 = 0%) and processing speed domains were significantly inferior among Al exposed as compared to unexposed. The other evaluated cognitive domains, such as cognitive flexibility, visuospatial abilities and psychomotor functions did not significantly differ between the two groups. We observed a serious risk of bias in most of the included studies. CONCLUSION Current pieces of evidence suggest an association between chronic Al exposure and impaired cognitive function in majority of domains including memory, processing speed and working memory while no significant influence in other cognitive domains. However, considering high heterogeneity and low quality of primary evidence, further high-quality studies are necessary for conclusive evidence in this regard.
Collapse
Affiliation(s)
| | - Rakesh Balachandar
- Clinical Epidemiology, ICMR-National Institute of Occupational Health, Ahmedabad, Gujarat, India.
| | - Ravibabu Kalahasthi
- Biochemistry, Regional Occupational Health Centre (Southern), ICMR-National Institute of Occupational Health, Bengaluru, Karnataka Nadu, India
| | - Ravikesh Tripathi
- Assistant Professor, Institute of Behavioral Science, Gujarat Forensic Science University, Gandhinagar, Gujarat, India
| | - Madhumita Haridoss
- Non-Communicable Diseases, ICMR-National Institute of Epidemiology, Chennai, Tamil Nadu, India
| |
Collapse
|
5
|
Stein J, Geisel J, Obeid R. Association between neuropathy and B-vitamins: A systematic review and meta-analysis. Eur J Neurol 2021; 28:2054-2064. [PMID: 33619867 DOI: 10.1111/ene.14786] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/04/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Peripheral neuropathy (PN) is common in patients with diseases that are in turn associated with deficiency of the B-vitamins, and vitamin treatment has shown mixed results. METHODS This systematic review and meta-analysis studied the association between PN/pain and B-vitamin biomarkers and investigated whether vitamin treatment can ameliorate the symptoms. PubMed and Web of Science were searched according to the study protocol. RESULTS A total of 46 observational and seven interventional studies were identified and included in the data synthesis. The presence of PN was associated with lowered B12 levels (pooled estimate [95% CIs] = 1.51 [1.23-1.84], n = 34, Cochran Q Test I2 = 43.3%, p = 0.003) and elevated methylmalonic acid (2.53 [1.39-4.60], n = 9, I2 = 63.8%, p = 0.005) and homocysteine (3.48 [2.01-6.04], n = 15, I2 = 70.6%, p < 0.001). B12 treatment (vs. the comparators) showed a non-significant association with symptom improvement (1.36 (0.66-2.79), n = 4, I2 = 28.9%). Treatment with B1 was associated with a significant improvement in symptoms (5.34 [1.87-15.19], n = 3, I2 = 64.6%, p = 0.059). Analysis of seven trials combined showed a non-significant higher odds ratio for improvement under treatment with the B-vitamins (2.58 [0.98-6.79], I2 = 80.0%, p < 0.001). CONCLUSIONS PN is associated with lowered plasma vitamin B12 and elevated methylmalonic acid and homocysteine. Overall, interventional studies have suggested that B-vitamins could improve symptoms of PN. Available trials have limitations and generally did not investigate vitamin status prior to treatment. Well-designed studies, especially in non-diabetes PN, are needed. This meta-analysis is registered at PROSPERO (ID: CRD42020144917).
Collapse
Affiliation(s)
- Johannes Stein
- Saarland University, Saarbrucken, Germany.,Department of Clinical Chemistry and Laboratory Medicine, Saarland University Hospital, Homburg, Germany
| | - Juergen Geisel
- Department of Clinical Chemistry and Laboratory Medicine, Saarland University Hospital, Homburg, Germany
| | - Rima Obeid
- Department of Clinical Chemistry and Laboratory Medicine, Saarland University Hospital, Homburg, Germany
| |
Collapse
|
6
|
Pan B, Zhou Y, Li H, Li Y, Xue X, Li L, Liu Q, Zhao X, Niu Q. Relationship between occupational aluminium exposure and histone lysine modification through methylation. J Trace Elem Med Biol 2020; 61:126551. [PMID: 32470791 DOI: 10.1016/j.jtemb.2020.126551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/26/2020] [Accepted: 05/11/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Aluminium is an environmental neurotoxin to which human beings are extensively exposed. However, the molecular mechanism of aluminium toxicity remains unclear. METHODS The changes in cognitive function of aluminum exposed workers under long-term occupational exposure were evaluated, and the relationship between cognitive changes, plasma memory related BDNF and EGR1 protein expression, and variations of epigenetic markers H3K4me3, H3K9me2, H3K27me3 expression levels in blood was explored. RESULTS MMSE, DSFT, DST scores in cognitive function and the levels of plasma BDNF and EGR1 protein expression decreased with the increase of blood aluminum level. H3K4me3, H3K9me2, H3K27me3 expression levels in peripheral blood lymphocytes of aluminum exposed workers were statistically different (all P<0.05). H3K4me3, H3K9me2 and H3K27me3 expression levels in lymphocytes were correlated with blood aluminum level. BDNF, EGR1 protein level and H3K4me3, H3K9me2, H3K27me3 expression levels have different degrees of correlation. There was a linear regression relationship between plasma BDNF, H3K4me3 and H3K9me2. H3K9me2 had a greater effect on BDNF than H3K4me3. There is a linear regression relationship between EGR1, H3K4me3 and H3K27me3, and the influence of H3K4me3 on EGR1 is greater than that of H3K27me3 on EGR1. CONCLUSION Alummnum may regulate the expression of BDNF and EGR1 by regulating H3K4me3, H3K27me3 and H3K9me2, and affect the cognitive function of workers by affecting the expression of BDNF and EGR1.
Collapse
Affiliation(s)
- Baolong Pan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Sixth Hospital of Shanxi Medical University (General Hospital of Tisco), China
| | - Yue Zhou
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, China
| | - Yaqin Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Xingli Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Liang Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Qun Liu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Xiaoyan Zhao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, China.
| |
Collapse
|
7
|
Li H, Xue X, Li Z, Pan B, Hao Y, Niu Q. Aluminium-induced synaptic plasticity injury via the PHF8-H3K9me2-BDNF signalling pathway. CHEMOSPHERE 2020; 244:125445. [PMID: 31835052 DOI: 10.1016/j.chemosphere.2019.125445] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
Aluminium is an environmental neurotoxin that comes extensively in contact with human being. The molecular mechanism of aluminium toxicity remains unclear. A number of studies have indicated that exposure to aluminium can impair learning and memory function. The purpose of this study was to investigate the mechanism of long-term potentiation(LTP) injury and the related signalling pathway activated by aluminium exposure. The results showed that aluminium treatment produced dose-dependent inhibition of LTP and reduced the activity of Histone H3K9 demethylation (H3K9me2) demethylase and the expression of the PHD (plant homeodomain) finger protein 8 (PHF8). Interestingly, there was no statistically significant difference in the expression of the PHF8 gene, suggesting that aluminium exposure only affects the translation process. Decrease in brain-derived neurotrophic factor (BDNF) expression may be related to the effect of aluminium. With correlation analysis between the hippocampal standardised field excitatory postsynaptic potential (fEPSP) amplitude and the expression of various proteins in the aluminium-exposed rat, the hippocampal standardised fEPSP amplitude was positively correlated with the expression of hippocampal PHF8 and BDNF proteins, and negatively correlated with the expression of hippocampal H3K9me2 protein. The correlation between H3K9me2 and BDNF was also considered negative. The results suggest that changes in synaptic plasticity might be related to changes in these proteins, which were induced by aluminium exposure. In conclusion, chronic aluminium exposure may inhibit PHF8 and prevent it from functioning as a demethylase. This may block H3K9me2 demethylation, decrease BDNF protein expression, and lead to LTP impairment.
Collapse
Affiliation(s)
- Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, China
| | - Xingli Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China
| | - Zhaoyang Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Baolong Pan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China
| | - Yanxia Hao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, China; Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, China; Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, China.
| |
Collapse
|
8
|
Li H, Xue X, Li L, Li Y, Wang Y, Huang T, Wang Y, Meng H, Pan B, Niu Q. Aluminum-Induced Synaptic Plasticity Impairment via PI3K-Akt-mTOR Signaling Pathway. Neurotox Res 2020; 37:996-1008. [PMID: 31970651 DOI: 10.1007/s12640-020-00165-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/17/2019] [Accepted: 01/15/2020] [Indexed: 12/20/2022]
Abstract
Aluminum (Al) is an environmental neurotoxin with extensive exposure by humans, but the molecular mechanism of its toxicity is still unclear. Several studies have indicated that exposure to aluminum can impair learning and memory function. The purpose of this study was to investigate the mechanism of LTP injury and the effect of aluminum exposure on related signal pathways. The results showed that the axonal dendrites of neurons in the hippocampal CA1 area of rats exposed to maltol aluminum showed neuritic beading and the dendritic spines were reduced. This resulted in dose-dependent LTP inhibition and led to impaired learning and memory function in rats. The PI3K-Akt-mTOR pathway may play a crucial role in this process.
Collapse
Affiliation(s)
- Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, China
| | - Xingli Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Liang Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Yaqin Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Yanni Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Tao Huang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Yanhong Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China
| | - Huaxing Meng
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
| | - Baolong Pan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Xinjian south Road, Taiyuan, Shanxi, People's Republic of China.
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, China.
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, China.
| |
Collapse
|
9
|
Popugaeva D, Kreyman K, Ray AK. Removal of aluminum from alkaline aqueous solution by adsorption on Degussa P25 TiO
2
and vermiculite concrete‐supported ferric oxyhydroxide. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Daria Popugaeva
- Department of Chemical and Biochemical EngineeringUniversity of Western Ontario London Ontario Canada
| | - Konstantin Kreyman
- Department of Chemical and Biochemical EngineeringUniversity of Western Ontario London Ontario Canada
| | - Ajay K. Ray
- Department of Chemical and Biochemical EngineeringUniversity of Western Ontario London Ontario Canada
| |
Collapse
|
10
|
Aluminum affects neural phenotype determination of embryonic neural progenitor cells. Arch Toxicol 2019; 93:2515-2524. [PMID: 31363819 DOI: 10.1007/s00204-019-02522-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 07/18/2019] [Indexed: 10/26/2022]
Abstract
Aluminum (Al) is a neurotoxin and is associated with the etiology of neurodegenerative diseases, such as Alzheimer's disease (AD). The Al-free ion (Al3+) is the biologically reactive and toxic form. However, the underlying mechanisms of Al toxicity in the brain remain unclear. Here, we evaluated the effects of Al3+ (in the chloride form-AlCl3) at different concentrations (0.1-100 µM) on the morphology, proliferation, apoptosis, migration and differentiation of neural progenitor cells (NPCs) isolated from embryonic telencephalons, cultured as neurospheres. Our results reveal that Al3+ at 100 µM reduced the number and diameter of neurospheres. Cell cycle analysis showed that Al3+ had a decisive function in proliferation inhibition of NPCs during neural differentiation and induced apoptosis on neurospheres. In addition, 1 µM Al3+ resulted in deleterious effects on neural phenotype determination. Flow cytometry and immunocytochemistry analysis showed that Al3+ promoted a decrease in immature neuronal marker β3-tubulin expression and an increase in co-expression of the NPC marker nestin and glial fibrillary acidic protein. Thus, our findings indicate that Al3+ caused cellular damage and reduced proliferation and migration, resulting in global inhibition of NPC differentiation and neurogenesis.
Collapse
|
11
|
Removal of aluminum from aqueous solution by adsorption on montmorillonite K10, TiO2, and SiO2: kinetics, isotherms, and effect of ions. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00141-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
12
|
Water quality appraisal of selected farm provinces using integrated hydrogeochemical, multivariate statistical, and microbiological technique. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s40808-019-00585-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
13
|
Martinez CS, Vera G, Ocio JAU, Peçanha FM, Vassallo DV, Miguel M, Wiggers GA. Aluminum exposure for 60days at an equivalent human dietary level promotes peripheral dysfunction in rats. J Inorg Biochem 2017; 181:169-176. [PMID: 28865725 DOI: 10.1016/j.jinorgbio.2017.08.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/04/2017] [Accepted: 08/22/2017] [Indexed: 11/16/2022]
Abstract
Aluminum (Al) is a neurotoxic associated with a number of chronic human diseases. We investigated the effects of Al exposure at doses similar to human dietary levels and at a high level exposure to Al on the peripheral nervous system. Wistar male rats were divided into two major groups and received orally: 1) First group - Low level - rats were subdivided and treated for 60days: a) Control - received ultrapure water; b) AlCl3 - received Al at 8.3mg/kg body weight (bw) for 60days; and 2) Second group - High level - rats were subdivided and treated for 42days: C) Control - received ultrapure water through oral gavage; d) AlCl3 - received Al at 100mg/kg bw for 42days. Von Frey hair test, plantar test, the presence of catalepsy and the spontaneous motor activity were investigated. Reactive oxygen species, lipid peroxidation and total antioxidant capacity, immunohistochemistry to investigate the nerve inflammation and, the specific presence of Al in the sciatic nerve fibers were investigated. Al exposure at a representative human dietary level promotes the development of mechanical allodynia, catalepsy, increased inflammation in the sciatic nerve, systemic oxidative stress and, is able to be retained in the sciatic nerve. The effects of low-dose Al were similar to those found in rats exposed to Al at a dose much higher (100mg/kg). Our findings suggest that Al may be considered toxic for the peripheral nervous system, thus inducing peripheral dysfunction.
Collapse
Affiliation(s)
- Caroline Silveira Martinez
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, BR 472, Km 592, PO box 118, 97500-970 Uruguaiana, Rio Grande do Sul, Brazil
| | - Gema Vera
- Department of Ciencias Básicas de la Salud, Universidad Rey Juan Carlos, Avda. de Atenas s/n, Alcorcón, Spain
| | - José Antonio Uranga Ocio
- Department of Ciencias Básicas de la Salud, Universidad Rey Juan Carlos, Avda. de Atenas s/n, Alcorcón, Spain
| | - Franck Maciel Peçanha
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, BR 472, Km 592, PO box 118, 97500-970 Uruguaiana, Rio Grande do Sul, Brazil
| | - Dalton Valentim Vassallo
- Departments of Physiological Sciences, Universidade Federal do Espírito Santo, and School of Medicine of Santa Casa de Misericórdia (EMESCAM), Av. Marechal Campos 1468, 29040-090 Vitória, Espírito Santo, Brazil
| | - Marta Miguel
- Bioactivity and Food Analysis Laboratory, Instituto de Investigación en Ciencias de la Alimentación, Nicolás Cabrera, 9, Campus Universitario de Cantoblanco, Madrid, Spain
| | - Giulia Alessandra Wiggers
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, BR 472, Km 592, PO box 118, 97500-970 Uruguaiana, Rio Grande do Sul, Brazil.
| |
Collapse
|
14
|
Effect of Geogenic Factors on Water Quality and Its Relation to Human Health around Mount Ida, Turkey. WATER 2017. [DOI: 10.3390/w9010066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
15
|
Frisbie SH, Mitchell EJ, Sarkar B. Urgent need to reevaluate the latest World Health Organization guidelines for toxic inorganic substances in drinking water. Environ Health 2015; 14:63. [PMID: 26268322 PMCID: PMC4535738 DOI: 10.1186/s12940-015-0050-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/20/2015] [Indexed: 05/24/2023]
Abstract
The World Health Organization (WHO) has established guidelines for drinking-water quality that cover biological and chemical hazards from both natural and anthropogenic sources. In the most recent edition of Guidelines for Drinking-water Quality (2011), the WHO withdrew, suspended, did not establish, or raised guidelines for the inorganic toxic substances manganese, molybdenum, nitrite, aluminum, boron, nickel, uranium, mercury, and selenium. In this paper, we review these changes to the WHO drinking-water guidelines, examining in detail the material presented in the WHO background documents for each of these toxic substances. In some cases, these WHO background documents use literature reviews that do not take into account scientific research published within the last 10 or more years. In addition, there are instances in which standard WHO practices for deriving guidelines are not used; for example, rounding and other mathematical errors are made. According to published meeting reports from the WHO Chemical Aspects Working Group, the WHO has a timetable for revising some of its guidelines for drinking-water quality, but for many of these toxic substances the planned changes are minimal or will be delayed for as long as 5 years. Given the limited nature of the planned WHO revisions to the inorganic toxic substances and the extended timetable for these revisions, we suggest that governments, researchers, and other stakeholders might establish independent recommendations for inorganic toxic substances and possibly other chemicals to proactively protect public health, or at the very least, revert to previous editions of the Guidelines for Drinking-water Quality, which were more protective of public health.
Collapse
Affiliation(s)
- Seth H Frisbie
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT, USA.
| | - Erika J Mitchell
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT, USA.
| | - Bibudhendra Sarkar
- Department of Molecular Structure and Function, The Research Institute of The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
- Department of Biochemistry, University of Toronto, Toronto, ON, Canada.
| |
Collapse
|
16
|
Willhite CC, Karyakina NA, Yokel RA, Yenugadhati N, Wisniewski TM, Arnold IMF, Momoli F, Krewski D. Systematic review of potential health risks posed by pharmaceutical, occupational and consumer exposures to metallic and nanoscale aluminum, aluminum oxides, aluminum hydroxide and its soluble salts. Crit Rev Toxicol 2014; 44 Suppl 4:1-80. [PMID: 25233067 PMCID: PMC4997813 DOI: 10.3109/10408444.2014.934439] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract Aluminum (Al) is a ubiquitous substance encountered both naturally (as the third most abundant element) and intentionally (used in water, foods, pharmaceuticals, and vaccines); it is also present in ambient and occupational airborne particulates. Existing data underscore the importance of Al physical and chemical forms in relation to its uptake, accumulation, and systemic bioavailability. The present review represents a systematic examination of the peer-reviewed literature on the adverse health effects of Al materials published since a previous critical evaluation compiled by Krewski et al. (2007) . Challenges encountered in carrying out the present review reflected the experimental use of different physical and chemical Al forms, different routes of administration, and different target organs in relation to the magnitude, frequency, and duration of exposure. Wide variations in diet can result in Al intakes that are often higher than the World Health Organization provisional tolerable weekly intake (PTWI), which is based on studies with Al citrate. Comparing daily dietary Al exposures on the basis of "total Al"assumes that gastrointestinal bioavailability for all dietary Al forms is equivalent to that for Al citrate, an approach that requires validation. Current occupational exposure limits (OELs) for identical Al substances vary as much as 15-fold. The toxicity of different Al forms depends in large measure on their physical behavior and relative solubility in water. The toxicity of soluble Al forms depends upon the delivered dose of Al(+3) to target tissues. Trivalent Al reacts with water to produce bidentate superoxide coordination spheres [Al(O2)(H2O4)(+2) and Al(H2O)6 (+3)] that after complexation with O2(•-), generate Al superoxides [Al(O2(•))](H2O5)](+2). Semireduced AlO2(•) radicals deplete mitochondrial Fe and promote generation of H2O2, O2 (•-) and OH(•). Thus, it is the Al(+3)-induced formation of oxygen radicals that accounts for the oxidative damage that leads to intrinsic apoptosis. In contrast, the toxicity of the insoluble Al oxides depends primarily on their behavior as particulates. Aluminum has been held responsible for human morbidity and mortality, but there is no consistent and convincing evidence to associate the Al found in food and drinking water at the doses and chemical forms presently consumed by people living in North America and Western Europe with increased risk for Alzheimer's disease (AD). Neither is there clear evidence to show use of Al-containing underarm antiperspirants or cosmetics increases the risk of AD or breast cancer. Metallic Al, its oxides, and common Al salts have not been shown to be either genotoxic or carcinogenic. Aluminum exposures during neonatal and pediatric parenteral nutrition (PN) can impair bone mineralization and delay neurological development. Adverse effects to vaccines with Al adjuvants have occurred; however, recent controlled trials found that the immunologic response to certain vaccines with Al adjuvants was no greater, and in some cases less than, that after identical vaccination without Al adjuvants. The scientific literature on the adverse health effects of Al is extensive. Health risk assessments for Al must take into account individual co-factors (e.g., age, renal function, diet, gastric pH). Conclusions from the current review point to the need for refinement of the PTWI, reduction of Al contamination in PN solutions, justification for routine addition of Al to vaccines, and harmonization of OELs for Al substances.
Collapse
Affiliation(s)
- Calvin C. Willhite
- Risk Sciences International, Ottawa, ON, Canada
- McLaughlin Centre for Population Health Risk Assessment, Ottawa, ON, Canada
| | | | - Robert A. Yokel
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky, USA
| | | | - Thomas M. Wisniewski
- Departments of Neurology, Psychiatry and Pathology, New York University School of Medicine, New York City, New York, USA
| | - Ian M. F. Arnold
- Occupational Health Program, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Franco Momoli
- Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON, Canada
| | - Daniel Krewski
- Risk Sciences International, Ottawa, ON, Canada
- McLaughlin Centre for Population Health Risk Assessment, Ottawa, ON, Canada
- Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| |
Collapse
|
17
|
Peña-Fernández A, González-Muñoz MJ, Lobo-Bedmar MC. "Reference values" of trace elements in the hair of a sample group of Spanish children (aged 6-9 years) - are urban topsoils a source of contamination? ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 38:141-152. [PMID: 24930126 DOI: 10.1016/j.etap.2014.05.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 06/03/2023]
Abstract
Human hair is used as a biomonitor to evaluate the environmental exposure to contaminants in the individual. However, the use of human hair is controversial, mainly because reference levels for pollutants in hair have not yet been set. In the case of Spain, few biomonitoring studies have involved infants and children. A biomonitoring study was conducted to investigate the possible normal values of trace elements of toxicological concern in children aged 6-9 years from the city of Alcalá de Henares, Community of Madrid (Spain), following the methodology and strict inclusion criteria previously developed by our group. Levels of Al, As, Be, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Sn, Ti, Tl, V and Zn were monitored in scalp-hair from 117 healthy children (47 boys and 70 girls) between April and May of 2001. The levels of trace elements here described could be considered as possible "reference values" for children aged 6-9 years resident in the Community of Madrid. These values might also be selected as a preliminary screening tool to evaluate if a Spanish child has been exposed to any of the contaminants studied here. This study also investigated whether local urban topsoils were a source of metals for this population.
Collapse
Affiliation(s)
- A Peña-Fernández
- Universidad de Alcalá, Unidad de Toxicología, Departamento de Ciencias Biomédicas, Crta. Madrid-Barcelona Km, 33.6, 28871 Alcalá de Henares, Madrid, Spain.
| | - M J González-Muñoz
- Universidad de Alcalá, Unidad de Toxicología, Departamento de Ciencias Biomédicas, Crta. Madrid-Barcelona Km, 33.6, 28871 Alcalá de Henares, Madrid, Spain
| | - M C Lobo-Bedmar
- IMIDRA, Departamento de Investigación Agroambiental, Finca el Encín, Crta. Madrid-Barcelona Km, 38.2, 28800 Alcalá de Henares, Madrid, Spain
| |
Collapse
|
18
|
Application of Chemometric Techniques in the Assessment of Groundwater Quality of Udham Singh Nagar, Uttarakhand, India. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s12403-014-0127-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
19
|
Auger C, Han S, Appanna VP, Thomas SC, Ulibarri G, Appanna VD. Metabolic reengineering invoked by microbial systems to decontaminate aluminum: implications for bioremediation technologies. Biotechnol Adv 2012. [PMID: 23201464 DOI: 10.1016/j.biotechadv.2012.11.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
As our reliance on aluminum (Al) increases, so too does its presence in the environment and living systems. Although generally recognized as safe, its interactions with most living systems have been nefarious. This review presents an overview of the noxious effects of Al and how a subset of microbes can rework their metabolic pathways in order to survive an Al-contaminated environment. For instance, in order to expulse the metal as an insoluble precipitate, Pseudomonas fluorescens shuttles metabolites toward the production of organic acids and lipids that play key roles in chelating, immobilizing and exuding Al. Further, the reconfiguration of metabolic modules enables the microorganism to combat the dearth of iron (Fe) and the excess of reactive oxygen species (ROS) promoted by Al toxicity. While in Rhizobium spp., exopolysaccharides have been invoked to sequester this metal, an ATPase is known to safeguard Anoxybacillus gonensis against the trivalent metal. Hydroxyl, carboxyl and phosphate moieties have also been exploited by microbes to trap Al. Hence, an understanding of the metabolic networks that are operative in microorganisms residing in polluted environments is critical in devising bioremediation technologies aimed at managing metal wastes. Metabolic engineering is essential in elaborating effective biotechnological processes to decontaminate metal-polluted surroundings.
Collapse
Affiliation(s)
- Christopher Auger
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada P3E 2C6
| | | | | | | | | | | |
Collapse
|
20
|
Baba A, Tayfur G. Groundwater contamination and its effect on health in Turkey. ENVIRONMENTAL MONITORING AND ASSESSMENT 2011; 183:77-94. [PMID: 21336483 DOI: 10.1007/s10661-011-1907-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2010] [Accepted: 01/27/2011] [Indexed: 05/30/2023]
Abstract
The sources of groundwater pollution in Turkey are identified, and pathways of contaminants to groundwater are first described. Then, the effects of groundwater quality on health in Turkey are evaluated. In general, sources of groundwater contamination fall into two main categories: natural and anthropogenic sources. Important sources of natural groundwater pollution in Turkey include geological formations, seawater intrusion, and geothermal fluid(s). The major sources of anthropogenic groundwater contamination are agricultural activities, mining waste, industrial waste, on-site septic tank systems, and pollution from imperfect well constructions. The analysis results revealed that natural contamination due to salt and gypsum are mostly found in Central and Mediterranean regions and arsenic in Aegean region. Geothermal fluids which contain fluoride poses a danger for skeleton, dental, and bone problems, especially in the areas of Denizli, Isparta, and Aydın. Discharges from surface water bodies contaminate groundwater by infiltration. Evidence of such contamination is found in Upper Kızılırmak basin, Gediz basin, and Büyük Melen river basin and some drinking water reservoirs in İstanbul. Additionally, seawater intrusion causes groundwater quality problems in coastal regions, especially in the Aegean coast. Industrial wastes are also polluting surface and groundwater in industrialized regions of Turkey. Deterioration of water quality as a result of fertilizers and pesticides is another major problem especially in the regions of Mediterranean, Aegean, Central Anatolia, and Marmara. Abandoned mercury mines in the western regions of Turkey, especially in Çanakkale, İzmir, Muğla, Kütahya, and Balıkesir, cause serious groundwater quality problems.
Collapse
Affiliation(s)
- Alper Baba
- Department of Civil Engineering, İzmir Institute of Technology, Urla, İzmir, Turkey.
| | | |
Collapse
|