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Hiller J, Göen T, Drexler H, Berking C, Wagner N. Elevated aluminum excretion in patients by long-term subcutaneous immunotherapy - A cross-sectional case-control study. Int J Hyg Environ Health 2024; 258:114337. [PMID: 38461738 DOI: 10.1016/j.ijheh.2024.114337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/19/2024] [Accepted: 02/06/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND Aluminum (Al) adjuvants have been used in vaccines and subcutaneous immunotherapy (SCIT) for decades. Despite indisputable neurotoxic properties of Al, there is no clear evidence of a causal relationship between their use and any neurotoxic side effects. However, recent rat studies have shown an accumulation of Al from adjuvants in tissues, especially in bones. OBJECTIVES Since the human toxicokinetics of Al-adjuvants are poorly understood, this study aimed to evaluate whether up-dosed or long-term SCIT with Al-coupled extracts leads to increased Al load in humans. METHODS This observational cross-sectional case-control study explored Al excretion in hymenoptera venom allergy patients recruited in 2020 before initiation (n = 10) and during ongoing (n = 12) SCIT with Al-based preparations. Urine samples were collected before and 24 h after the SCIT injections and analyzed for aluminum content by using atomic absorption spectrometry. The cumulative administered Al dose was extracted from patient records. Patients receiving long-term immunotherapy were treated between 2.8 and 13.6 years (mean 7.1). Other potential sources of Al exposure were surveyed. RESULTS Patients who had received Al-coupled immunotherapy for several years showed significantly (p < 0.001) higher Al excretion than the controls at initiation of immunotherapy (mean 18.2 μg/gC vs. 7.9 μg/gC) and predominantly (73%) were above the 95th percentile of the general populations' exposure (>15 μg/gC), however, without reaching levels of toxicological concern (>50 μg/gC). Taking both groups together excreted Al levels correlated with the cumulative administered Al dose from SCIT (linear regression: Alurine = 8.258 + 0.133*Alcum; p = 0.001). DISCUSSION These results suggest a relevant iatrogenic contribution of long-term SCIT to human internal Al burden and potential accumulation. Considering the medical benefits of Al-adjuvants and SCIT a differentiated risk-benefit analysis is needed. For certain scenarios of potential toxicological concern in clinical practice biomonitoring might be advisable.
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Affiliation(s)
- Julia Hiller
- Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 9-11, 91054, Erlangen, Germany.
| | - Thomas Göen
- Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 9-11, 91054, Erlangen, Germany.
| | - Hans Drexler
- Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 9-11, 91054, Erlangen, Germany.
| | - Carola Berking
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Deutsches Zentrum Immuntherapie (DZI), Ulmenweg 18, 91054, Erlangen, Germany.
| | - Nicola Wagner
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Deutsches Zentrum Immuntherapie (DZI), Ulmenweg 18, 91054, Erlangen, Germany.
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Shawahna R, Jaber M, Maqboul I, Hijaz H, Alawneh A, Imwas H. Aluminum Concentrations in Breast Milk Samples Obtained from Breastfeeding Women from a Resource-Limited Country: A Study of the Predicting Factors. Biol Trace Elem Res 2024; 202:1-8. [PMID: 37268844 DOI: 10.1007/s12011-023-03714-z] [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: 02/07/2023] [Accepted: 05/21/2023] [Indexed: 06/04/2023]
Abstract
This study assessed aluminum concentrations in breast milk samples obtained from breastfeeding women in resource-limited countries, estimated daily intake of aluminum by breastfed infants, and identified predictors of higher breast milk aluminum concentrations. A descriptive analytical approach was used in this multicenter study. Breastfeeding women were recruited from different maternity health clinics in Palestine. Aluminum concentrations in 246 breast milk samples were determined using an inductively coupled plasma-mass spectrometric method. The mean breast milk aluminum concentration was 2.1 ± 1.5 mg/L. The mean estimated daily intake of aluminum by infants was 0.37 ± 0.26 mg/kg body weight/day. Multiple linear regression showed that breast milk aluminum concentrations were predicted by living in urban areas, closer to industrial areas, waste disposals, frequent use of deodorants, and less frequent use of vitamins. Breast milk aluminum levels among Palestinian breastfeeding women were comparable to those previously determined in occupationally unexposed women.
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Affiliation(s)
- Ramzi Shawahna
- Department of Physiology, Pharmacology and Toxicology, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
- Clinical Research Center, An-Najah National University Hospital, Nablus, Palestine.
| | - Mohammad Jaber
- Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
- An-Najah National University Hospital, Nablus, Palestine
| | - Iyad Maqboul
- Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
- An-Najah National University Hospital, Nablus, Palestine.
| | - Hatim Hijaz
- Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
- An-Najah National University Hospital, Nablus, Palestine
| | - Ala'a Alawneh
- Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Hanen Imwas
- Department of Medicine, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
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3
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Vlasak T, Dujlovic T, Barth A. Aluminum exposure and cognitive performance: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167453. [PMID: 37777128 DOI: 10.1016/j.scitotenv.2023.167453] [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: 08/31/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/02/2023]
Abstract
BACKGROUND Aluminum is increasingly used in various industrial processes due to its beneficial properties. Occupational exposure to aluminum, however, has been linked to several adverse health effects. The impact of occupational aluminum exposure on worker's cognitive performance and its contribution in developing neurodegenerative diseases is highly discussed with competing results. METHOD We conducted a literature search via online databases until June 2023. Applicable studies fulfilling inclusion criteria investigating the effects of occupational aluminum exposure on cognitive functions were gathered. Results were aggregated using random effects meta-analysis and the effect size g. We further explored types of publication biases, moderating variables and exposure-effect relationships using meta-regressions. RESULTS The final sample consisted of 18 studies with 87 effect sizes for seven cognitive functions. We found significant worse performances in workers occupationally exposed to aluminum regarding processing speed, working memory, attention, and reaction time after exclusion of outliers. Additionally, we found increased blood plasma aluminum significantly predicting decreased cognitive performance in exposed workers. CONCLUSION Our results show decreased performance levels in processing speed, working memory, attention and reaction time in workers occupationally exposed to aluminum compared to controls. Furthermore, we found that aluminum in blood plasma was the only biomarker as significant predictor of cognitive performance. We discuss recommendations for further research in relation to occupational health and safety. Finally, we extend the discourse between occupational aluminum exposure and development of neurodegenerative diseases like Alzheimer's disease.
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Affiliation(s)
- Thomas Vlasak
- Department of Psychology, Sigmund Freud Private University Linz, Linz, Austria
| | - Tanja Dujlovic
- Department of Psychology, Sigmund Freud Private University Linz, Linz, Austria
| | - Alfred Barth
- Department of Psychology, Sigmund Freud Private University Linz, Linz, Austria.
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Borrell A, Garcia-Garin O, Aguilar A, Vighi M, Valdivia M, González EM, Páez-Rosas D, Drago M. High aluminum content in bone of marine mammals and its relation with source levels and origin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121936. [PMID: 37263563 DOI: 10.1016/j.envpol.2023.121936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/13/2023] [Accepted: 05/29/2023] [Indexed: 06/03/2023]
Abstract
Although aluminum is widely distributed in the earth's crust, its environmental availability and wildlife assimilation rates are only partially known. Here we analyze aluminum concentrations in bone from 10 species of marine mammals inhabiting 3 geographic areas subject to different aluminum inputs: the Río de la Plata estuary (Uruguay), the coastal waters of Mauritania and the Galapagos archipelago (Ecuador). Overall, concentrations were unusually high as compared to those of terrestrial animals, with lowest concentrations in the Galapagos archipelago, then the Río de la Plata estuary and finally Mauritania. The aluminum source varied between regions, prevailing anthropogenic sources in the Río de la Plata Estuary and natural sources (wind-blown dust) in Mauritanian waters. The type of source determined contamination levels: anthropogenic sources were most significant for coastal species and showed a decline with distance of habitat from shoreline, while natural sources had a higher influence on open waters because of the dearth of biogenic silica that eliminates aluminum from the water column. Since aluminum remains in bone for several decades, marine mammal bone reflects historical levels of aluminum and therefore is a good bioindicator of the aluminum concentration of the marine environment.
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Affiliation(s)
- A Borrell
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona 08028, Spain; Biodiversity Research Institute (IRBio), Universitat de Barcelona, Barcelona 08028, Spain.
| | - O Garcia-Garin
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona 08028, Spain; Biodiversity Research Institute (IRBio), Universitat de Barcelona, Barcelona 08028, Spain
| | - A Aguilar
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona 08028, Spain; Biodiversity Research Institute (IRBio), Universitat de Barcelona, Barcelona 08028, Spain
| | - M Vighi
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona 08028, Spain; Biodiversity Research Institute (IRBio), Universitat de Barcelona, Barcelona 08028, Spain
| | - M Valdivia
- National Museum of Natural History (MNHN), 11000, Montevideo, Uruguay
| | - E M González
- National Museum of Natural History (MNHN), 11000, Montevideo, Uruguay
| | - D Páez-Rosas
- Universidad San Francisco de Quito (USFQ), Galapagos Science Center, Isla San Cristóbal, EC200150, Islas Galápagos, Ecuador; Dirección Parque Nacional Galápagos, Unidad Técnica Operativa San Cristóbal, Isla San Cristóbal, EC200150, Islas Galápagos, Ecuador
| | - M Drago
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona, Barcelona 08028, Spain; Biodiversity Research Institute (IRBio), Universitat de Barcelona, Barcelona 08028, Spain
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Hiller J, Göen T, Seibold-Wulf N, Meyer S, Drexler H. Effect of an aluminum foil-processed diet on internal human aluminum burden. ENVIRONMENT INTERNATIONAL 2023; 177:108000. [PMID: 37285713 DOI: 10.1016/j.envint.2023.108000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/26/2023] [Accepted: 05/26/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND AND PURPOSE Aluminum can be released into food by aluminum-containing food-contact materials (Al-FCM) during preparation or storage. There is considerable concern that extra aluminum intake may have negative effects on public health, especially with regard to its high background exposure and neurotoxic properties of aluminum in high exposures. Human in-vivo data on the additional aluminum load from Al-FCM, however, are lacking. As such, the objective of this study was to explore whether the consumption of a diet highly exposed to such products leads to an increased systemic Al load in real-world conditions. MATERIALS AND METHODS An exploratory, single-arm intervention study with a partially standardized diet was designed and carried out with 11participants. The same 10-day sequence of dishes was repeated three times. Participants were exposed to Al-FCM from Days 11 to 20, whereas control-phase meals were prepared without Al-FCM during the first and last 10-day periods. Spot urine samples were collected each morning and evening and analyzed for their aluminum concentration; appropriate contamination countermeasures were taken. PRINCIPAL RESULTS Urinary aluminum excretion showed a strong dependency on the creatinine concentration in urine and required adjustment in further analyses. The creatinine-adjusted aluminum excretion during the exposure phase (median 1.98 µg/g creatinine) was higher than in both control phases (1.78 µg/g creatinine each). Two different mixed-effects regression models showed a significant effect in the exposure phase. Considering a discrete time effect, the creatinine-adjusted mean increase in the exposure phase was estimated to be 0.19 µg/L (95% CI: 0.07-0.31; p = 0.0017). MAJOR CONCLUSIONS This study demonstrated a measurable but fully reversible additional Al burden in humans from subacute Al-FCM exposure under real-world conditions. The estimated increase from Al-FCM corresponds to 8% of the baseline concentration. These data enable a more robust assessment of human health risks by Al-FCM.
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Affiliation(s)
- Julia Hiller
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Henkestr. 9-11, 91054 Erlangen, Germany.
| | - Thomas Göen
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Henkestr. 9-11, 91054 Erlangen, Germany
| | - Nina Seibold-Wulf
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Henkestr. 9-11, 91054 Erlangen, Germany; Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit, Frauenplatz 4, 96049 Bamberg, Germany
| | - Sebastian Meyer
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute of Medical Informatics, Biometry and Epidemiology, Waldstr. 6, 91054 Erlangen, Germany
| | - Hans Drexler
- Friedrich-Alexander-Universität Erlangen-Nürnberg, Institute and Outpatient Clinic of Occupational, Social, and Environmental Medicine, Henkestr. 9-11, 91054 Erlangen, Germany
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Wang S, Xue Y, Zhang J, Meng H, Zhang J, Li X, Zhang Z, Li H, Pan B, Lu X, Zhang Q, Niu Q. Interaction between aluminum exposure and ApoEε4 gene on cognitive function of in-service workers. CHEMOSPHERE 2023; 323:138282. [PMID: 36868418 DOI: 10.1016/j.chemosphere.2023.138282] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/28/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The occurrence and development of cognitive impairment, the early stage of AD, may be affected both by factors of environmental (aluminum exposure) and genetic (ApoEε4 gene). But whether there is an interaction between the two factors on cognitive function is still unknown. To explore the interaction between the two factors on cognitive function of in-service workers. A total of 1121 in-service workers in a large aluminum factory were investigated in Shanxi Province. Cognitive function was assessed by the Mini-mental State Examination (MMSE), the clock-drawing test (CDT), the Digit Span Test (DST, including DSFT and DSBT), the fuld object memory evaluation (FOM), and the verbal fluency task (VFT). The plasma-Al (p-Al) concentrations were measured by inductively coupled plasma-mass spectrometry (ICP-MS) as an internal exposure indicator, and the participants were divided into four Al exposure groups according to the quartile of p-Al concentrations, namely Q1, Q2, Q3, and Q4. ApoE genotype was determined by Ligase Detection Reaction (LDR). The multiplicative model was fitted using non-conditional logistic regression and additive model was fitted using crossover analysis to analyze the interaction between p-Al concentrations and the ApoEε4 gene. Finally, a dose-response relationship between p-Al concentrations and cognitive impairment was observed, with the p-Al concentrations increased, cognitive function performance gradually becomes worse (Ptrend<0.05), and the risk of cognitive impairment gradually increases (Ptrend<0.05), mainly in executive/visuospatial impairment, auditory memory impairment (particularly the working memory impairment). And ApoEε4 gene may be a risk factor for cognitive impairment, while no association between the ApoEε2 gene and cognitive impairment is observed. Additionally, an additive but no multiplicative interaction between p-Al concentrations and ApoEε4 gene is observed, and when the two factors work together, the risk of cognitive impairment further increased, of which 44.2% can be attributed to the interaction effect.
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Affiliation(s)
- Shanshan Wang
- Section of Occupational Medicine, Department of Special Medicine, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Yingjun Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Jintao Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Huaxing Meng
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Jingsi Zhang
- Section of Occupational Medicine, Department of Special Medicine, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Xiaoyan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Zhuoran Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Department of Occupational Health, School of Public Health, Jining Medical University, Jining, Shandong, 272000, China
| | - Baolong Pan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Sixth Hospital of Shanxi Medical University (General Hospital of Tisco), Taiyuan, Shanxi, 030001, China
| | - Xiaoting Lu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qinli Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
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Irnidayanti Y, Maharani DG, Rizky MH, Noer MI, Rizkawati V. Resveratrol-Tempeh reduce micronucleus frequencies bone marrow cells and stimulate osteocyte proliferation in aluminum chloride-induced mice. BRAZ J BIOL 2023; 82:e266690. [PMID: 36753089 DOI: 10.1590/1519-6984.266690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 12/13/2022] [Indexed: 02/05/2023] Open
Abstract
Aluminum (Al) is widely used for water purification, cooking pots, cosmetic and pharmaceutical preparations, toothpaste tubes, and food processing industries. Although the transport in the digestive tract is very poor but if the load is high, it can be absorbed and accumulated. About 50-70% of Al accumulates in the bones and can have an impact on human health. Resveratrol (RES), isolated from tempeh as an Indonesian food ingredient, can increase cell viability and has promising cytoprotective effects. RES has the capacity to interact with oxidative stress, so it has the potential as a therapy in bone repair. Therefore, this study aimed to evaluate the effect of RES on the number of osteocytes and bone marrow cells in Al-induced mice. Swiss Webster mice were divided into four groups: (1) untreated groups, (2) AlCl3-treated groups, (3) Al+Res5 treated groups, and (4) Al+Res10 treated groups. Al dose 200 mg/kg body weight was administered intraperitoneally. RES was given one hour after administration of Al, with doses of 5 and 10 mg/kg Body Weight. Al and RES administration is carried out for one month. All mice were sacrificed, and mouse bones were isolated for histological preparations and a half for genotoxic assays. Bone marrow cells were collected and stained with My Grunwald. The number of micronuclei polychromatic erythrocytes (MNPCE) was examined in 1,000 PCEs per animal. The number of PCEs is counted by at least 200 erythrocytes (PCE + NCE) per animal. The results showed that the administration of Al significantly increased the number of micronuclei (MN) but after administration of RES at doses of 5 and 10 mg/kg Body Weight significantly reduced the number of MN in bone marrow cells. A dose of RES 10 mg/kg BW stimulates proliferation and increases the number of osteocytes in bone significantly. It can be concluded that Al can cause genotoxicity in bone marrow cells and RES is anti-genotoxic and can stimulate osteocyte proliferation.
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Affiliation(s)
- Y Irnidayanti
- Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Department of Biology, Jakarta, Indonesia.,Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Research Group of Structure and Animal Development, Jakarta, Indonesia
| | - D G Maharani
- Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Research Group of Structure and Animal Development, Jakarta, Indonesia
| | - M H Rizky
- Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Research Group of Structure and Animal Development, Jakarta, Indonesia
| | - M I Noer
- Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Department of Biology, Jakarta, Indonesia
| | - V Rizkawati
- Universitas Negeri Jakarta, Faculty of Mathematics and Natural Sciences, Department of Biology, Jakarta, Indonesia
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Zheng S, Nie Z, Lv Z, Wang T, Wei W, Fang D, Zou X, Fu Y, Cao T, Liang Z, Lu Q, Huang H, Wen Y, Huang S. Associations between plasma metal mixture exposure and risk of hypertension: A cross-sectional study among adults in Shenzhen, China. Front Public Health 2022; 10:1039514. [PMID: 36582368 PMCID: PMC9794142 DOI: 10.3389/fpubh.2022.1039514] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
Background Metal exposure affects human health. Current studies mainly focus on the individual health effect of metal exposure on hypertension (HTN), and the results remain controversial. Moreover, the studies assessing overall effect of metal mixtures on hypertension risk are limited. Methods A cross-sectional study was conducted by recruiting 1,546 Chinese adults who attended routine medical check-ups at the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen. The plasma levels of 13 metals were measured using inductively coupled plasma mass spectrometry. Multivariate logistic regression model, restricted cubic spline (RCS) model and the Bayesian Kernel Machine Regression (BKMR) model were applied to explore the single and combined effect of metals on the risk of HTN. Results A total of 642 (41.5%) participants were diagnosed with HTN. In the logistic regression model, the adjusted odds ratios (ORs) were 0.71 (0.52, 0.97) for cobalt, 1.40 (1.04, 1.89) for calcium, 0.66 (0.48, 0.90), and 0.60 (0.43, 0.83) for aluminum in the second and third quartile, respectively. The RCS analysis showed a V-shaped or an inverse V-shaped dose-response relationship between metals (aluminum or calcium, respectively) and the risk of HTN (P for non-linearity was 0.017 or 0.009, respectively). However, no combined effect was found between metal mixture and the risk of hypertension. Conclusions Plasma levels of cobalt, aluminum and calcium were found to be associated with the risk of HTN. Further studies are needed to confirm our findings and their potential mechanisms with prospective studies and experimental study designs.
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Affiliation(s)
- Sijia Zheng
- School of Public Health, Shanxi Medical University, Taiyuan, China,Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Zhiqiang Nie
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ziquan Lv
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Tian Wang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Weizhou Wei
- Shenzhen Yutian Community Health Service Centre, Shenzhen, China
| | - Daokui Fang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Xuan Zou
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Yulin Fu
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Tingting Cao
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Zhaoyi Liang
- School of Public Health, Shanxi Medical University, Taiyuan, China,Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Qi Lu
- School of Public Health, Shanxi Medical University, Taiyuan, China,Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Hui Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Ying Wen
- Shenzhen Center for Disease Control and Prevention, Shenzhen, China,Ying Wen
| | - Suli Huang
- School of Public Health, Shanxi Medical University, Taiyuan, China,Shenzhen Center for Disease Control and Prevention, Shenzhen, China,*Correspondence: Suli Huang
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Lu Y, Liu G. Nano alum: A new solution to the new challenge. Hum Vaccin Immunother 2022; 18:2060667. [PMID: 35471916 PMCID: PMC9897648 DOI: 10.1080/21645515.2022.2060667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Alum adjuvant has always been the first choice when designing a vaccine. Conventional aluminum adjuvant includes aluminum hydroxide, aluminum phosphate, and amorphous aluminum hydroxyphosphate (AAHS), which could effectively induce the humoral, and to a lesser extent, cellular immune responses. Their safety is widely accepted for a variety of vaccines. However, conventional alum adjuvant is not an ideal choice for a vaccine antigen with poor immunogenicity, especially the subunit vaccine in which cellular response is highly demanded. The outbreak of COVID-19 requires a delicately designed vaccine without the antibody-dependent enhancement (ADE) effect to ensure the safety. A sufficiently powerful adjuvant that can induce both Th1 and Th2 immune responses is necessary to reduce the risk of ADE. These circumstances all bring new challenges to the conventional alum adjuvant. However, turning conventional microscale alum adjuvant into nanoscale is a new solution to these problems. Nanoscale alum owns a higher surface volume ratio, can absorb much more antigens, and promote the ability to stimulate the antigen-presenting cells (APCs) via different mechanisms. In this review, the exceptional performance of nano alum adjuvant and their preparation methods will be discussed. The potential safety concern of nano alum is also addressed. Based on the different mechanisms, the potential application of nano alum will also be introduced.
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Affiliation(s)
- Yang Lu
- Shanghai Zerun Bio, Shanghai, PRC,CONTACT Yang Lu Shanghai Zerun Bio, 1690 Zhangheng Rd, Pudong New District, Shanghai, PRC
| | - Ge Liu
- Shanghai Zerun Bio, Shanghai, PRC
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10
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Steiner-Bogdaszewska Ż, Tajchman K, Ukalska-Jaruga A, Florek M, Pecio M. The Mineral Composition of Bone Marrow, Plasma, Bones and the First Antlers of Farmed Fallow Deer. Animals (Basel) 2022; 12:ani12202764. [PMID: 36290150 PMCID: PMC9597732 DOI: 10.3390/ani12202764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 09/28/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022] Open
Abstract
An adequate supply of essential nutrients is particularly important during the skeletal growth and development of young deer, especially in males, who build new antlers each year. The aim of the research was to analyze the levels of 21 mineral elements (including the bulk elements: Ca, P, Mg, K, Na; trace elements: Li, Cr, Mn, Co, Cu, Zn, Se, Mo; and toxic elements: Be, Al, As, Cd, Sb, Ba, Pb, Ni) in the bone marrow, plasma, bones, and first antlers of farmed fallow deer (Dama dama). The mineral compositions of tissues were analyzed using inductively coupled plasma mass spectrometry. Higher concentrations of Ca, P, Mg, Cr, Zn, Se, Al, Ba and Ni were found in bone marrow than in plasma. The highest concentrations of Ca, P and Ba were recorded in fallow deer bone, while the highest concentrations of Mg, K, Na, Li, Cr, Mn, Co, Cu, Zn, Se, Mo, Be, Al, As, Sb, Pb and Ni were found in the antlers. Moreover, the research showed a significant negative relationship between Ca and Cd, and between Ca and Pb, and P and Pb (rS = −0.70, rS = −0.80, and rS = −0.66, respectively; p < 0.05) in the tissues.
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Affiliation(s)
- Żaneta Steiner-Bogdaszewska
- Institute of Parasitology of the Polish Academy of Sciences, Research Station in Kosewo Górne, 11-700 Mrągowo, Poland
| | - Katarzyna Tajchman
- Department of Animal Ethology and Wildlife Management, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
- Correspondence: (K.T.); (A.U.-J.)
| | - Aleksandra Ukalska-Jaruga
- Department of Soil Science Erosion and Land Protection, Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland
- Correspondence: (K.T.); (A.U.-J.)
| | - Mariusz Florek
- Department of Quality Assessment and Processing of Animal Products, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Monika Pecio
- Department of Soil Science Erosion and Land Protection, Institute of Soil Science and Plant Cultivation, State Research Institute, Czartoryskich 8, 24-100 Puławy, Poland
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11
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Vuoti E, Palosaari S, Peräniemi S, Tervahauta A, Kokki H, Kokki M, Tuukkanen J, Lehenkari P. In utero deposition of trace elements and metals in tissues. J Trace Elem Med Biol 2022; 73:127042. [PMID: 35905605 DOI: 10.1016/j.jtemb.2022.127042] [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: 11/05/2021] [Revised: 06/14/2022] [Accepted: 07/15/2022] [Indexed: 10/17/2022]
Abstract
INTRODUCTION All animals, including humans, are exposed to heavy metals which are known to accumulate in different tissues, especially in bone. During pregnancy, the maternal bone turnover is increased and the metals in the mother's body can be mobilized into the bloodstream. Heavy metals in maternal blood are known to pass through the placenta to the fetal blood and finally, deposited to bone tissue. However, there are no studies on the concentration of metals in the fetal solid tissues and until now, the rate of metal transfer from mother to fetus is not exactly known. MATERIALS AND METHODS Samples of the blood, liver, placenta, and three different bones were collected from 17 pregnant ewes and their 27 fetuses. The animals had no known exposure to heavy metals. The concentrations of Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, Sb, Sn, Sr, Te, Ti, Tl, V, and Zn were analyzed using ICP-MS. RESULTS AND DISCUSSION The concentration of Sb, Sn, Te, and Tl were under the detection limit in all the samples. The other metals were found in all maternal and fetal tissues, suggesting that all detectable metals cross the placenta. Blood concentrations were low compared to solid tissue concentrations. The concentrations of essential elements varied between maternal and fetal tissues, which could be explained by biological differences. The differences in concentrations of non-essential elements between the ewe and fetuses were smaller. The most significant differences were between maternal and fetal concentrations of Ba and Sr, which is at least partly explained by the mineralization degree of the bone. CONCLUSION Heavy metals accumulate in fetal solid tissues in sheep that are not directly exposed to heavy metals. Because of the differences in anatomy between human and sheep placenta, the accumulation in the tissue of human fetuses should be extrapolated cautiously. However, there might be some clinical relevance for fertile aged women who are exposed to heavy metals, such as women who work in the metal industry or who have undergone joint replacement surgery.
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Affiliation(s)
- Ella Vuoti
- Medical Faculty, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, FI-90014, Finland.
| | - Sanna Palosaari
- Medical Faculty, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, FI-90014, Finland; Medical Research Center, Oulu University and Oulu University Hospital, Oulu, Finland
| | - Sirpa Peräniemi
- University of Eastern Finland, School of Pharmacy, P.O. Box 1627, FI-70210 Kuopio, Finland
| | - Arja Tervahauta
- University of Eastern Finland, School of Pharmacy, P.O. Box 1627, FI-70210 Kuopio, Finland; University of Eastern Finland, Department of Environmental and Biological Sciences, P.O. Box 1627, FI-70210 Kuopio, Finland
| | - Hannu Kokki
- University of Eastern Finland, School of Medicine, P.O. Box 1627, FI-70210 Kuopio, Finland
| | - Merja Kokki
- Kuopio University Hospital, Department of Anesthesia and Intensive Care Medicine, P.O. Box 100, FI-70029, Finland
| | - Juha Tuukkanen
- Medical Faculty, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, FI-90014, Finland
| | - Petri Lehenkari
- Medical Faculty, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, FI-90014, Finland; Medical Research Center, Oulu University and Oulu University Hospital, Oulu, Finland; Division of Orthopedic Surgery, Oulu University Hospital, Oulu, Finland
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12
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Xu SM, Pan BL, Gao D, Zhang YW, Huan JP, Han X, Song J, Wang LP, Zhang HF, Niu Q, Lu XT. Blood glucose mediated the effects of cognitive function impairment related to aluminum exposure in Chinese aluminum smelting workers. Neurotoxicology 2022; 91:282-289. [PMID: 35679993 DOI: 10.1016/j.neuro.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 05/18/2022] [Accepted: 06/01/2022] [Indexed: 11/17/2022]
Abstract
OBJECT To explore the effects of occupational aluminum exposure on workers' cognitive function and blood glucose concentration, and to analyze whether blood glucose concentration can mediate the cognitive changes caused by aluminum. METHOD Our study recruited 375 workers from an aluminum factory in northern China. We collected the fasting elbow venous blood of the workers, measured their fasting blood glucose concentration (FBG), and used ICP-MS to determine plasma aluminum concentration (P-Al) as an indicator of internal exposure. The Montreal Cognitive Assessment (MoCA), was used to assess the cognitive function of workers. Generalized linear model was used to analyze the association of P-Al with cognitive function and blood glucose concentration, and the restricted cubic spline model was used to fit the dose-response relationship. We also conducted a mediation effect analysis. RESULT We observed the dose-response relationship, that is, as the P-Al increased, sum of MoCA, visuospatial/executive, naming, language, and abstraction scores decreased, and the blood glucose concentration increased. For every e-fold increase in P-Al, sum of MoCA, visuospatial/executive, naming, language, and abstraction scores decreased by 0.328 points, 0.120 points, 0.059 points, 0.060 points, and 0.083 points, respectively, and FBG rose by 0.109 mmol/L. FBG has a significant mediating effect between P-Al and sum of MoCA (P for mediator=0.042), and it could explain 10.7% of the effect of cognitive level related to P-Al. CONCLUSION Occupational aluminum exposure negatively affected the cognitive function of workers and positively affected FBG. FBG may partially explain the impact of occupational aluminum exposure on workers' cognitive function.
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Affiliation(s)
- Shi-Meng Xu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China; Peace Hospital Affiliated to Changzhi Medical College, China
| | - Bao-Long Pan
- Sixth Hospital of Shanxi Medical University (General hospital of Tisco), China
| | - Dan Gao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yun-Wei Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jia-Ping Huan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiao Han
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jing Song
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Lin-Ping Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Hui-Fang Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiao-Ting Lu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China.
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13
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Bickley LM, Martell J, Cowan D, Wilken D, Yan W, McNeill FE, Zarnke A, Hedges K, Chettle DR. Bone aluminum measured in miners exposed to McIntyre powder. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE 2022; 19:335-342. [PMID: 35452589 DOI: 10.1080/15459624.2022.2063876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A small pilot study was conducted to test whether the technique of in vivo neutron activation analysis could measure bone aluminum levels in 15 miners who had been exposed to McIntyre Powder over 40 years prior. All miners were over 60 years of age, had worked in mines that used McIntyre Powder, and were sufficiently healthy to travel from northern to southern Ontario for the measurements. Individual aluminum levels were found to be significantly greater than zero with 95% confidence (p < 0.05) in 7 out of the 15 miners. The inverse variance weighted mean of the 15 participants was 21.77 ± 2.27µgAl/gCa. This was significantly higher (p < 0.001) than in a group of 15 non-occupationally exposed subjects of a comparable age from Southern Ontario who had been measured in a previous study. The inverse variance weighted mean bone aluminum content in the non-occupationally exposed group was 3.51 ± 0.85µgAl/gCa. Since the use of McIntyre Powder ceased in 1979, these subjects had not been exposed for more than 40 years. Calculations of potential levels at the cessation of exposure in the 1970s, using a biological half-life of aluminum in bone of 10 to 20 years predicted levels of bone aluminum comparable with studies performed in dialysis patients in the 1970s and 1980s. This pilot study has shown that the neutron activation analysis technique can determine differences in bone aluminum between McIntyre Powder exposed and non-exposed populations even though 40 years have passed since exposure ceased. The technique has potential application as a biomarker of exposure in cross-sectional studies of the health consequences of exposure to McIntyre Powder.
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Affiliation(s)
- L M Bickley
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario, Canada
| | - J Martell
- Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada
| | - D Cowan
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - D Wilken
- Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada
| | - W Yan
- Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada
| | - F E McNeill
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario, Canada
| | - A Zarnke
- Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada
- Laurentian University, School of Kinesiology and Health Sciences, Sudbury, ON, Canada
- Center for Research for Occupational Safety and Health, Sudbury, ON, Canada
| | - K Hedges
- Occupational Health Clinics for Ontario Workers, Sudbury, Ontario, Canada
| | - D R Chettle
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario, Canada
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14
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de Ligt R, Westerhout J, Grossouw D, Buters TP, Rissmann R, Burggraaf J, Windhorst AD, Tozer S, Pappa G, Wall B, Bury D, Mason DR, Vaes WHJ. Assessment of dermal absorption of aluminium from a representative antiperspirant formulation using a (26Al)Al microtracer approach: a follow-up study in humans. Toxicol Res (Camb) 2022; 11:511-519. [PMID: 35782644 PMCID: PMC9244721 DOI: 10.1093/toxres/tfac029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/21/2022] [Accepted: 05/05/2022] [Indexed: 11/22/2022] Open
Abstract
A follow-up study was performed in 12 healthy women to evaluate systemic exposure to aluminium following topical application of a representative antiperspirant formulation under real-life use conditions (part A) and to assess the local fate of topically applied aluminium by taking additional tape strips and skin biopsies (Part B). A simple roll-on formulation, containing the maximal possible radioactive dose, was prepared with [26Al] aluminium-labeled chlorohydrate (ACH). The microtracer of [26Al] was used to distinguish aluminium from the natural background, using accelerator mass spectrometry. [26Al] aluminiumcitrate was administered intravenously to estimate the dermal fraction absorbed. Despite the 25-fold increase of the topical dose compared with the previous study, only 12 blood samples gave results above the lower limit of quantitation (0.118 fg/mL). The most reliable estimates of the dermal fraction absorbed are derived from noncompartmental analysis with the urine data. By using the intravenous dose to normalize the urinary excretion to 100% bioavailability, the best estimate of the fraction absorbed of [26Al] from a topical application of [26Al]-aluminium-labeled chlorohydrate in an antiperspirant formulation was 0.00052%. Part B of the study demonstrated that the majority of the aluminium in the formulation remained associated with the external layers of the skin without penetration through the skin.
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Affiliation(s)
| | | | | | - Thomas P Buters
- Center for Human Drug Research , 2333CL Leiden , The Netherlands
| | - Robert Rissmann
- Center for Human Drug Research , 2333CL Leiden , The Netherlands
| | | | - Albert D Windhorst
- Department of Radiology and Nuclear Medicine , Free University Medical Center, P.O. Box 7057, 1007MB, Amsterdam , The Netherlands
| | - Sarah Tozer
- Procter & Gamble Technical Centres Ltd , Reading RG2 0QE , UK
| | | | - Brian Wall
- Colgate Palmolive Company , 909 River Road, Piscataway, NJ 08855 , USA
| | - Dagmar Bury
- L’Oréal Research & Innovation , 9 rue Pierre Dreyfus, 92110 Clichy , France
| | - David R Mason
- Safety and Environmental Assurance Centre , Unilever, Colworth Science Park, Sharnbrook MK44 1LQ , UK
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15
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Kraljević Pavelić S, Saftić Martinović L, Simović Medica J, Žuvić M, Perdija Ž, Krpan D, Eisenwagen S, Orct T, Pavelić K. Clinical Evaluation of a Defined Zeolite-Clinoptilolite Supplementation Effect on the Selected Blood Parameters of Patients. Front Med (Lausanne) 2022; 9:851782. [PMID: 35712111 PMCID: PMC9197155 DOI: 10.3389/fmed.2022.851782] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
The natural clinoptilolite material is an inorganic crystal mineral called zeolite. It has been extensively studied and used in industrial applications and veterinary and human medicine due to positive effects on health. Limited data is available in the scientific literature about its effects on the levels of physiologically relevant minerals in the human organism. Accordingly, we performed a comprehensive and controlled monitoring of the relevant mineral and contaminants levels in human subjects supplemented with a certified clinoptilolite material within three clinical trials with different supplementation regimens. Effects of a registered and certified clinoptilolite material PMA-zeolite on selected mineral and metal levels were determined by standard biochemical methods and inductively coupled plasma mass spectrometry (ICP-MS) in the blood of subjects enrolled in three clinical trials: short-term (28 days, Mineral Metabolism and selected Blood Parameters study MMBP), medium-term (12 weeks, Morbus Crohn study), and long-term (4 years, Osteoporosis TOP study) supplementation. Lower concentrations were observed for copper (Cu) in patients with osteoporosis, which normalized again in the long-term supplementation trial, whereas sodium (Na) and calcium (Ca) levels diminished below the reference values in patients with osteoporosis. In the short- and long-term supplementation trials, increased levels of lead (Pb) were observed in PMA-zeolite-supplemented subjects, which decreased in the continued long-term supplementation trial. Increased levels of aluminum (Al) or Pb attributable to eventual leakage from the material into the bloodstream were not detected 1 h after intake in the short-term supplementation trial. Nickel (Ni) and Al were statistically significantly decreased upon long-term 4-year supplementation within the long-term supplementation trial, and arsenic (As) was statistically significantly decreased upon 12-weeks supplementation in the medium-term trial. Alterations in the measured levels for Na and Ca, as well as for Pb, in the long-term trial are probably attributable to the bone remodeling process. Checking the balance of the minerals Cu, Ca, and Na after 1 year of supplementation might be prescribed for PMA-supplemented patients with osteoporosis. Clinical Trial Registration [https://clinicaltrials.gov], identifiers [NCT03901989, NCT05178719, NCT04370535, NCT04607018].
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Affiliation(s)
| | | | | | - Marta Žuvić
- Department of Biotechnology, University of Rijeka, Rijeka, Croatia
| | | | - Dalibor Krpan
- Polyclinic “K—Center” for Internal Medicine, Gynaecology, Radiology, Physical Medicine and Rehabilitation, Zagreb, Croatia
| | | | - Tatjana Orct
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Krešimir Pavelić
- Faculty of Medicine, Juraj Dobrila University of Pula, Pula, Croatia
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16
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Cirovic A, Cirovic A. Aluminum bone toxicity in infants may be promoted by iron deficiency. J Trace Elem Med Biol 2022; 71:126941. [PMID: 35123368 DOI: 10.1016/j.jtemb.2022.126941] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 01/15/2022] [Accepted: 01/28/2022] [Indexed: 11/22/2022]
Abstract
Aluminum has adverse effects on human health. Aluminum is poorly transported from the gastrointestinal tract, but if the load is high, a significant level of aluminum may be absorbed. There are two main sources of aluminum in infants - adapted formulas (when an infant is predominantly fed with it), and vaccines. After aluminum enters the circulation, it binds to transferrin and remains mainly in the skeleton for a longer period of time. Transferrin receptor 1 (TfR1) is highly expressed on osteoblast-like cells whereas the number of TfR1 may additionally rise in case of iron deficiency. Since iron deficiency can induce the additional expression of TfR1, a larger quantities of aluminum may be uptaken by osteoblasts and consequently aluminum may decrease the number of osteoblasts and lead peak bone mass (PBM) closer to the osteoporotic threshold. Iron deficiency may potentiate aluminum-induced toxicity to bones. Aluminum burden in infants has always been considered as harmless whereas a potential increased toxicity of aluminum in high-sensitive infants caused by iron deficiency has not been evaluated.
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Affiliation(s)
- Ana Cirovic
- University of Belgrade, Faculty of Medicine, Institute of Anatomy, Dr Subotica 4/2, Belgrade 11000, Serbia.
| | - Aleksandar Cirovic
- University of Belgrade, Faculty of Medicine, Institute of Anatomy, Dr Subotica 4/2, Belgrade 11000, Serbia.
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17
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Paquet F, Leggett RW, Blanchardon E, Bailey MR, Gregoratto D, Smith T, Ratia G, Davesne E, Berkovski V, Harrison JD. Occupational Intakes of Radionuclides: Part 5. Ann ICRP 2022; 51:11-415. [PMID: 35414227 DOI: 10.1177/01466453211028755] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
INTRODUCTION Aluminium exposure is associated with bone disease (an elevated bone content of aluminium and reduced bone formation on bone biopsy) and neurotoxicity (features of altered brain functions and/or typical spike and slow wave waveforms on electroencephalogram) in patients with elevated blood aluminium concentrations. OBJECTIVES To critically analyse the literature to determine the dose-toxicity relationships between aluminium exposure and related bone disease and aluminium neurotoxicity. METHODS A systematic review of the literature with collation and analysis of individual data of human cases of aluminium exposure was conducted between 1 January 1966 and 30 December 2020. Embase, MEDLINE (OVID MEDLINE), PubMed and TOXNET were searched with the following strategies: "Aluminium AND toxicity OR aluminium AND poisoning OR aluminium AND dialysis OR aluminium AND chronic renal failure OR aluminium AND intravenous" limited to "(human)". Inclusion criteria required individual data relating to aluminium exposure in humans. Papers in which features of aluminium toxicity and analytical confirmation of aluminium exposure could not be determined in individual patients were excluded. RESULTS Thirty-seven papers were identified, which included data on 179 individuals exposed to aluminium. The sources of aluminium exposure (median duration of exposure) were: dialysis fluid (48 months) in 110 cases; oral aluminium hydroxide (20 months) in 20 cases; plasma exchange (2 months) in 16 cases; infant formula feed (minimal duration of 2 weeks) in 14 cases; intravesical exposures (2 days) in 13 oncology patients and potable water exposure in six cases. EXPOSURE TO DIALYSIS FLUID Of the 110 patients exposed to dialysis fluid, 99 were adults and 11 children, who were analysed separated. Of the adults, 50 with aluminium neurotoxicity had a median aluminium concentration of 467 µg/L (IQR 230 - 752), 28 with aluminium bone disease had a median aluminium concentration of 142 µg/L (IQR 46-309) and 21 with asymptomatic aluminium overload had a median aluminium concentration of 35 µg/L (IQR 26-51). Median aluminium concentrations were significantly greater in patients with aluminium neurotoxicity compared to those with aluminium bone disease (p < 0.0001) or asymptomatic aluminium overload (p < 0.0001). ORAL ALUMINIUM HYDROXIDE Of the 20 cases, 11 were adults and nine were children. Of the 11 adults, eight with aluminium neurotoxicity had a median aluminium concentration of 682 µg/L (IQR 438-770) and three with aluminium bone disease had a median aluminium concentration of 100 µg/L (IQR 62-138) (p = 0.007). Of the nine children, five had aluminium neurotoxicity with a median aluminium concentration of 335 µg/L (IQR 229-601), one had aluminium bone disease and an aluminium concentration of 1030 µg/L and three had asymptomatic aluminium overload with a median aluminium concentration 98 µg/L (IQR 65-365). PLASMA EXCHANGE Three patients with stage 5 chronic kidney disease developed aluminium bone disease during plasma exchange; their median blood or serum aluminium concentration was 73 µg/L (IQR 59-81). Asymptomatic aluminium overload was reported in six patients receiving outpatient plasma exchange who had a median creatinine clearance of 71 mL/min (IQR 40-106) and a median aluminium concentration of 49 µg/L (IQR 34-116), and in seven intensive care patients with acute kidney injury whose median aluminium concentration was 30 µg/L (IQR 17-35); (p = 0.02). INTRAVESICAL EXPOSURES All 13 intravesical exposures developed aluminium neurotoxicity and had a median aluminium concentration of 157 µg/L (IQR 45-276). POTABLE WATER All six patients developed aluminium bone disease and their median blood aluminium concentration was 17 µg/L (IQR 13-100). CONCLUSIONS Toxic aluminium exposure can result in neurotoxicity and bone disease, especially in patients with chronic kidney disease. Adults with stage 5 chronic kidney disease chronically exposed to aluminium developed aluminium neurotoxicity at higher concentrations than those with aluminium bone disease or with asymptomatic aluminium overload. Aluminium neurotoxicity was reported at lower concentrations following acute exposure to intravesical aluminium. Extrapolating the relevance of these concentrations to the general population is problematic in that the data were derived from oncology patients, however, the possibility that aluminium neurotoxicity may occur at concentrations lower that those reported historically in patients with stage 5 chronic kidney disease cannot be excluded.
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Affiliation(s)
- J M Coulson
- Welsh National Poisons Unit, Cardiff, UK.,Cardiff University, Cardiff, UK
| | - B W Hughes
- Welsh National Poisons Unit, Cardiff, UK
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19
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da Silva Lima D, da Silva Gomes L, de Sousa Figueredo E, E Silva YIF, Silva EM, de Souza Bovi T, Taboga SR, Marques MR, Biancardi MF, Dos Santos FCA. Subacute exposure to aluminum chloride causes prolonged morphological insults in the ventral male prostate and in the female prostate of adult gerbils. ENVIRONMENTAL TOXICOLOGY 2022; 37:299-309. [PMID: 34726835 DOI: 10.1002/tox.23398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/07/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Aluminum (Al) is a widespread metal in the environment, and is found in fresh or processed foods, household utensils, packaging, and medicines. In addition to its high toxicity, Al can also have estrogenic agonistic effects on target organs. Considering that the Al effects on the prostate are little known, the aim of this study was to evaluate the impact of aluminum chloride (AlCl3 ) subacute exposure on the morphophysiology of the male ventral prostate and the female prostate of adult gerbils. Furthermore, the glandular restoration capacity in face of the Al insults was evaluated in gerbils that were submitted to 30 days of recovery. Male and female gerbils were orally exposed to AlCl3 (10 mg/kg) for 30 consecutive days. The animals were euthanized 1 day (Al1D) or 30 days (Al30D) after the end of treatment. Prostates were dissected out and processed for structural, ultrastructural and immunohistochemical analyses. Male ventral prostates and female prostates of the Al1D group showed increased cell proliferation, glandular hyperplasia, increased secretory activity and greater androgen receptor immunoreactivity. In males, Al withdrawal (Al30D) allowed a partial recovery of the prostate, as the glandular secretory activity, and frequency of androgen receptor positive cells were similar to the control group. In females, the recuperation interval (Al30D) was not enough to restore the prostatic morphology, since the gland remained hyperplastic, proliferative, and with greater androgen and estrogen receptor immunoreactivity. These data alert to the importance of avoiding Al exposure, since this metal can have a harmful and prolonged action on the prostate.
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Affiliation(s)
- Danilo da Silva Lima
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Liana da Silva Gomes
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Esther de Sousa Figueredo
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Yasmin Inocêncio Fernandes E Silva
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Edvaldo Mendes Silva
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Thais de Souza Bovi
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Sebastião Roberto Taboga
- Department of Biology, Laboratory of Microscopy and Microanalysis, State University of São Paulo - UNESP, São Paulo, Brazil
| | - Mara Rúbia Marques
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Manoel Francisco Biancardi
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Fernanda Cristina Alcantara Dos Santos
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
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A multifunctional selective fluorescent chemosensor for detection of Ga3+, In3+ and Fe3+ in different solvents. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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21
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Squadrone S, Brizio P, Griglione A, Falsetti S, Curcio A, Abete MC. Aluminium occurrence in plant feed from Northwestern Italy. J Trace Elem Med Biol 2021; 68:126850. [PMID: 34479100 DOI: 10.1016/j.jtemb.2021.126850] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/21/2021] [Accepted: 08/24/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Aluminium (Al) is widespread in nature, but the main route of exposure for humans and animals is through food. Cereals and vegetables give and important contribute to dietary intake. This investigation focused on the occurrence aluminium in raw materials intended for animal consumption. In fact, Al is not included in the official monitoring programs, and little or no data are still available about its presence in feed or plant material. METHODS Rice, wheat, corn, barley, rye, triticale, oats, and soy samples were collected in Northwestern Italy in an area characterized by clayey soil rich in aluminium silicates. Samples were subjected to homogenization and microwave acid digestion and Al was quantified by Inductively Coupled Plasma-Mass Spectrometer (ICP-MS). RESULTS Different aluminium concentrations were found in the analyzed raw materials: soy (89 mg kg-1) > rye > rice > oat > triticale > barley > wheat > corn (2.9 mg kg-1). In this study, Al concentrations were found higher than those reported for same matrices in other UE and non-EU countries, especially in rice and soy. CONCLUSIONS Al concentrations were related to the soil geological feature and to the physiological characteristics of the plant species. These two factors must be carefully considered for a reliable evaluation of aluminium exposure through feed and food.
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Affiliation(s)
- Stefania Squadrone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Chemistry Department, CReAA, via Bologna 148, Turin, Italy.
| | - Paola Brizio
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Chemistry Department, CReAA, via Bologna 148, Turin, Italy
| | - Alessandra Griglione
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Chemistry Department, CReAA, via Bologna 148, Turin, Italy
| | - Stefano Falsetti
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Chemistry Department, CReAA, via Bologna 148, Turin, Italy
| | - Antonio Curcio
- ASL BI Local Veterinary Service Veterinary Biella, BI, Italy
| | - Maria Cesarina Abete
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Chemistry Department, CReAA, via Bologna 148, Turin, Italy
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22
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He C, Zhao X, Lei Y, Nie J, Lu X, Song J, Wang L, Li H, Liu F, Zhang Y, Niu Q. Whole-transcriptome analysis of aluminum-exposed rat hippocampus and identification of ceRNA networks to investigate neurotoxicity of Al. MOLECULAR THERAPY - NUCLEIC ACIDS 2021; 26:1401-1417. [PMID: 34900398 PMCID: PMC8636738 DOI: 10.1016/j.omtn.2021.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022]
Abstract
Aluminum is a known neurotoxin that can induce Aβ deposition and abnormal phosphorylation of tau protein, leading to Alzheimer disease (AD)-like damages such as neuronal damage and decreased learning and memory functions. In this study, we constructed a rat model of subchronic aluminum maltol exposure, and the whole-transcriptome sequencing was performed on the hippocampus of the control group and the middle-dose group. A total of 167 miRNAs, 37 lncRNAs, 256 mRNAs, and 64 circRNAs expression changed. The Kyoto Encyclopedia of Genes and Genomes showed that PI3K/AKT pathway was the most enriched pathway of DEGs, and IRS1 was the core molecule in the PPI network. circRNA/lncRNA-miRNA-mRNA networks of all DEGs, DEGs in the PI3K/AKT pathway, and IRS1 were constructed by Cytoscape. Molecular experiment results showed that aluminum inhibited the IRS1/PI3K/AKT pathway and increased the content of Aβ and tau. In addition, we also constructed an AAV intervention rat model, proving that inhibition of miR-96-5p expression might resist aluminum-induced injury by upregulating expression of IRS1. In general, these results suggest that the ceRNA networks are involved in the neurotoxic process of aluminum, providing a new strategy for studying the toxicity mechanism of aluminum and finding biological targets for the prevention and treatment of AD.
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Affiliation(s)
- Chanting He
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Department of Anatomy, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiaoyan Zhao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yang Lei
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jisheng Nie
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiaoting Lu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jing Song
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Linping Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Fangqu Liu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yidan Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Key Lab of Environmental Hazard and Health of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Key Lab of Cellular Physiology of Education Ministry, Shanxi Medical University, Taiyuan, Shanxi 030001, China
- Corresponding author Qiao Niu, PhD, Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi 030001, China.
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Seenan S, Iyer Sathiyanarayanan K. A multisensing ratiometric fluorescent sensor for recognition of Al3+, Th4+ and picric acid. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108825] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Souza-Monteiro D, Ferreira RDO, Eiró LG, de Oliveira Lima LA, Balbinot GS, da Paz SPA, Albuquerque ARL, Collares FM, Angélica RS, Pessanha S, do Socorro Ferraz Maia C, Lima RR. Long-term exposure to low doses of aluminum affects mineral content and microarchitecture of rats alveolar bone. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:45879-45890. [PMID: 33881690 DOI: 10.1007/s11356-021-13937-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Aluminum (Al) is one of the most found elements in nature in many forms, and human exposure can be quite common. Therefore, it is important to investigate the effects of exposure to Al mainly at low doses and for a prolonged period, in order to simulate human exposure in the periodontium, an important structure for support and protection of the teeth. This investigation aimed to study the aluminum chloride (AlCl3) toxicological effects in the mineral composition and micromorphology of the alveolar bone of rats. Two groups of eight male Wistar rats were used for the experiment. AlCl3 group was exposed to AlCl3 orally at a dose of 8.3 mg/kg/day for 60 days, while the control group received only distilled water. After that, the mandibles were collected and submitted to the following analyses: Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray microtomography analysis; blood was also collected for determination of Al circulating levels. Our data showed that AlCl3 was capable of increasing Al circulating levels in blood. It was able to promote changes in the mineral content and triggers significant changes in the mineralized bone microstructure, such as number and thickness of trabeculae, being associated with alveolar bone-loss.
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Affiliation(s)
- Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Railson de Oliveira Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Luciana Guimarães Eiró
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Leidiane Alencar de Oliveira Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil
| | - Gabriela Souza Balbinot
- Dental Material Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Fabricio Mezzomo Collares
- Dental Material Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rômulo Simões Angélica
- Laboratory of X-Ray Diffraction, Institute of Geosciences, Federal University of Pará, Belém, Pará, Brazil
| | - Sofia Pessanha
- Laboratory of Instrumentation, Biomedical Engineering and Radiation Physics, NOVA School of Science and Technology, Campus Caparica, 2829-516, Caparica, Portugal
| | - Cristiane do Socorro Ferraz Maia
- Laboratory of Pharmacology of Inflammation and Behavior, Faculty of Pharmacy, Institute of Health Science, Federal University of Pará, Belém, Pará, Brazil
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa, n1, Belém, 66075-110, Pará, Brazil.
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Hethey C, Hartung N, Wangorsch G, Weisser K, Huisinga W. Physiology-based toxicokinetic modelling of aluminium in rat and man. Arch Toxicol 2021; 95:2977-3000. [PMID: 34390355 PMCID: PMC8380244 DOI: 10.1007/s00204-021-03107-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 06/17/2021] [Indexed: 11/05/2022]
Abstract
A sufficient quantitative understanding of aluminium (Al) toxicokinetics (TK) in man is still lacking, although highly desirable for risk assessment of Al exposure. Baseline exposure and the risk of contamination severely limit the feasibility of TK studies administering the naturally occurring isotope 27Al, both in animals and man. These limitations are absent in studies with 26Al as a tracer, but tissue data are limited to animal studies. A TK model capable of inter-species translation to make valid predictions of Al levels in humans-especially in toxicological relevant tissues like bone and brain-is urgently needed. Here, we present: (i) a curated dataset which comprises all eligible studies with single doses of 26Al tracer administered as citrate or chloride salts orally and/or intravenously to rats and humans, including ultra-long-term kinetic profiles for plasma, blood, liver, spleen, muscle, bone, brain, kidney, and urine up to 150 weeks; and (ii) the development of a physiology-based (PB) model for Al TK after intravenous and oral administration of aqueous Al citrate and Al chloride solutions in rats and humans. Based on the comprehensive curated 26Al dataset, we estimated substance-dependent parameters within a non-linear mixed-effect modelling context. The model fitted the heterogeneous 26Al data very well and was successfully validated against datasets in rats and humans. The presented PBTK model for Al, based on the most extensive and diverse dataset of Al exposure to date, constitutes a major advancement in the field, thereby paving the way towards a more quantitative risk assessment in humans.
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Affiliation(s)
- Christoph Hethey
- Junior Research Group Toxicokinetic Modelling, Department Exposure, German Federal Institute for Risk Assessment, Berlin, Germany
- Institute of Mathematics, Mathematical Modelling and Systems Biology, University of Potsdam, Potsdam, Germany
| | - Niklas Hartung
- Institute of Mathematics, Mathematical Modelling and Systems Biology, University of Potsdam, Potsdam, Germany
| | - Gaby Wangorsch
- Paul-Ehrlich-Institut (Federal Institute for Vaccines and Biomedicines), Langen, Germany
| | - Karin Weisser
- Paul-Ehrlich-Institut (Federal Institute for Vaccines and Biomedicines), Langen, Germany
| | - Wilhelm Huisinga
- Institute of Mathematics, Mathematical Modelling and Systems Biology, University of Potsdam, Potsdam, Germany.
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Boretti A. Reviewing the association between aluminum adjuvants in the vaccines and autism spectrum disorder. J Trace Elem Med Biol 2021; 66:126764. [PMID: 33930617 DOI: 10.1016/j.jtemb.2021.126764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/19/2021] [Accepted: 04/22/2021] [Indexed: 01/21/2023]
Abstract
The manuscript reviews the association between aluminum adjuvants (AlAd) in vaccines and autism spectrum disorder (ASD). Aluminum (Al) is neurotoxic. Infants who have received AlAd in vaccines show a higher rate of ASD. The behavior of mice changes with Al injection. Patients suffering from ASD have higher concentrations of Al in their brains. Thus, AlAd is an etiologic factor in ASD. Immune efficacy led to the use of the AlAd in vaccines; however, the safety of those who are vaccinated with such vaccines has not been considered. The mechanisms of action of AlAd and the pharmacodynamics of injected AlAd used in vaccines are not well-characterized. The association between aluminum adjuvants in the vaccines and autism spectrum disorder is suggested by multiple lines of evidence.
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Affiliation(s)
- Alberto Boretti
- Prince Mohammad Bin Fahd University, P.O. Box 1664, Al Khobar, 31952, Saudi Arabia.
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27
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Yu X, Tian X, Wang Y, Zhu C. Metal-metal interaction and metal toxicity: a comparison between mammalian and D. melanogaster. Xenobiotica 2021; 51:842-851. [PMID: 33929283 DOI: 10.1080/00498254.2021.1922781] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. Non-essential heavy metals such as mercury (Hg), arsenic (As), cadmium (Cd), and aluminium (Al) are useless to organisms and have shown extensive toxic effects. Previous studies show that two main molecular mechanisms of metal toxicity are oxidative stress and metal-metal interaction which can disrupt metal homeostasis.2. In this paper, we mainly illustrate metal toxicity and metal-metal interaction through examples in mammalians and D. melanogaster (fruit fly).3. We describe the interference of metal homeostasis by metal-metal interactions in three aspects including replacement, cellular transporter competition, and disruption of the regulation mechanism, and elaborate the mechanisms of metal toxicity to better deal with the challenges of heavy metal pollution and related health problems.
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Affiliation(s)
- Xiaoyu Yu
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Xianhan Tian
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Yiwen Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Chunfeng Zhu
- School of Life Sciences, Tianjin University, Tianjin, China
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Lu XT, Xu SM, Zhang YW, Gao D, Yang H, Song J, Wang LP, Zhang QL, Shang N, Niu Q. Longitudinal study of the effects of occupational aluminium exposure on workers' cognition. CHEMOSPHERE 2021; 271:129569. [PMID: 33453483 DOI: 10.1016/j.chemosphere.2021.129569] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/27/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To explore the effects of occupational aluminium(Al) exposure on workers' cognition through a longitudinal study. METHODS The study population consisted of 276 workers in an Al factory. In 2014, we used inductively coupled plasma mass spectrometry (ICP-MS) to determine the plasma aluminium (P-Al) concentration of the workers, and a combined questionnaire to test the workers' cognitive function. Followed-up in 2016, the workers were tested again for cognitive function. Generalized linear regression was used to assess the association between P-Al concentration and cognitive scores, and multivariable logistic regression was used to assess the risk of cognitive decline caused by Al exposure. RESULTS Generalized linear regression results showed that a non-significant association was found between the P-Al concentration and cognitive test scores (P > 0.05) in 2014. Two years later, each 10-fold increase in P-Al concentration was inversely associated with the score of Mini-Mental state examination (MMSE) (β: -0.53, 95% CI: -0.86, -0.20) and Fuld object memory evaluation (FOME) (β: -0.93, 95% CI: -1.62, -0.24). Each 10-fold increase in P-Al concentration was inversely associated with MMSE2016-2014 (β: -0.38, 95% CI: -0.74, -0.01) and FOME2016-2014 (β: -1.20, 95% CI: -1.95, -0.45). There was a statistically significant difference in the average annual rate of change of MMSE and FOME with the tertile of P-Al concentration increase (P < 0.05). The multivariable logistic regression results showed that as the P-Al concentration increased, the risk of a FOME score decline increased (Ptrend = 0.009). CONCLUSIONS Continuous occupational Al exposure can damage workers' overall cognitive ability, especially episodic memory function.
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Affiliation(s)
- Xiao-Ting Lu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Shi-Meng Xu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Yun-Wei Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Dan Gao
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Hui Yang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Jing Song
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Lin-Ping Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qin-Li Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Nan Shang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
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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.
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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
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Yokel RA. Correction to Some Statements about Aluminum in Sulaiman et al. Chem Res Toxicol 2021; 34:935. [PMID: 33739833 DOI: 10.1021/acs.chemrestox.1c00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert A Yokel
- Department of Pharmaceutical Sciences College of Pharmacy University of Kentucky, Academic Medical Center, Lexington, Kentucky 40536-0596, United States
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Poddalgoda D, Hays SM, Kirman C, Chander N, Nong A. Derivation of Biomonitoring Equivalents for aluminium for the interpretation of population-level biomonitoring data. Regul Toxicol Pharmacol 2021; 122:104913. [PMID: 33652037 DOI: 10.1016/j.yrtph.2021.104913] [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: 11/17/2020] [Revised: 01/19/2021] [Accepted: 02/24/2021] [Indexed: 12/11/2022]
Abstract
Aluminium is widely used in many consumer products, however the primary source of aluminium exposure to the Canadian general population is through food. Aluminium can cause neurotoxicity and reproductive toxicity at elevated exposure levels. Health-based exposure guidance values have been established for oral exposure to aluminium, including a Minimal Risk Level (MRL) by the Agency for Toxic Substances and Disease Registry (ATSDR), a Provincial Tolerable Weekly Intake (PTWI) by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) and a Tolerable Weekly Intake (TWI) by the European Food Safety Authority (EFSA). Aluminium concentration in blood and urine can be used as a tool for exposure characterization in a population. A pharmacokinetic (PK) model was developed based on human dosing data to derive blood Biomonitoring Equivalents (BEs), whereas a mass balance approach was used to derive urine BEs for the above guidance values. The BEs for blood for daily intake consistent with the MRL, PTWI and TWI were 18, 16 and 8 μg/L, respectively. BEs for urine for the same guidance values were 137, 123 and 57 μg/L, respectively. The derived BEs may be useful in interpreting population-level biomonitoring data in a health risk context and thereby screening and prioritizing substances for human health risk assessment and risk management.
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Priest ND, Skybakmoen E, Jackson G. The bioavailability of ingested 26Al-labelled aluminium and aluminium compounds in the rat. Neurotoxicology 2021; 83:179-185. [PMID: 32605715 DOI: 10.1016/j.neuro.2020.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 11/28/2022]
Abstract
The fractional uptake of ingested aluminium and aluminium compounds (aluminium citrate, aluminium nitrate, aluminium chloride, aluminium sulphate, aluminium hydroxide, aluminium oxide, aluminium metal, powdered aluminium pot electrolyte, acidic sodium aluminium phosphate (SALP), basic sodium aluminium phosphate (Kasal), sodium aluminium silicate and FD&C red 40 aluminium lake) from the gastro-intestinal tract of adult female rats was measured. This was determined by comparing retained body burden of 26Al at seven days post-admistration of an i.v. injection of 26Al-labelled aluminium citrate with that retained following the gastric admistration of 26Al-labelled test compounds as either solutions or suspended solid. The calculated percentage uptake of 26Al for all the aluminium solutions was similar: aluminium citrate 0.08%, aluminium chloride 0.05%, aluminium nitrate 0.05% and aluminium sulphate 0.21%. The uptake of 26Al administered as insoluble particulates was lower: 0.03% for aluminium hydroxide; 0.02% for aluminium oxide; 0.04% for powdered pot electrolyte; 0.12% for sodium aluminium silicate; and 0.09% for FD&C red 40 aluminium lake. For aluminium metal, SALP and Kasal the amount of 26Al present in the rats was insufficient to determine uptake and was less than 0.03%. The results produced for aluminium citrate, aluminium hydroxide and aluminium sulphate are close to those published for man.
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Affiliation(s)
- N D Priest
- Canadian Nuclear Laboratories, Chalk River, Ontario, K0J 1J0, Canada(1)
| | - E Skybakmoen
- SINTEF Materials and Chemistry, Sem Sælands vei 12, Trondheim, NO-7465, Norway
| | - G Jackson
- PRIME Laboratory, Purdue University, 525 Northwestern Avenue, West Lafayette, Indiana, 47907-2036, USA
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Akong RA, Görls H, Woods JAO, Plass W, Eseola AO. ESIPT-inspired fluorescent turn-on sensitivity towards aluminium(III) detection by derivatives of O- and S-bridged bis-(phenol-imine) molecules. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Wang M, Zeng W, Zhang Z, Zhang W, Su H, Zhang Z, Jiang L, Liu Y, Shi Q. The Improvement of Immune Effect of Recombinant Human Beta-Defensin 2 on Hepatitis B Vaccine in Mice. Viral Immunol 2020; 34:96-111. [PMID: 33370550 DOI: 10.1089/vim.2020.0052] [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] [Indexed: 12/15/2022] Open
Abstract
Immunization with hepatitis B vaccine is an effective measure for prevention and control of hepatitis B Virus (HBV) infection. Although lots of efforts to improve the effect of hepatitis B vaccine have been made, the function of human beta defensin 2 (hBD2) on hepatitis B vaccine keeps unclear. In this article, we report that hBD2 not only promoted the activation and maturation of immature dendritic cells (iDCs) by increasing MHC II and CD86 expression, but it also significantly upregulated the mRNA level of IL-6 and IL-12B in mouse bone marrow-derived dendritic cells. The serum concentrations of IFN-γ in mice stimulated with 300 ng hBD2 increased from 25.21 to 42.04 pg/mL, with a time extension from 4 to 12 h post-injection. During the process of three times immunization (1, 14, 28 days) with 3 μg hepatitis B vaccine combined with or without 300 ng hBD2 with a 2 week interval in BALB/c mice, the antibody against HBsAg (HBsAb) concentration in serum at every time point of observation in the combined group was statistically higher than the hepatitis B vaccine group. The serum concentration of IgG2a subclass HBsAb on the 14th day post last injection in the combined group was significantly higher than the hepatitis B vaccine group. Further, the splenic cells from the mice treated with both hBD2 and hepatitis B vaccine possessed a greater ability to produce a surface antigen of hepatitis B virus (HBsAg) specific IFN-γ than those treated with hepatitis B vaccine alone. The percentages of CD3+/CD4+ T cells and CD3+/CD8+ T lymphocytes in spleens from the mice treated with 300 ng hBD2 were statistically higher than the phosphate buffered saline group. These data suggest that hBD2 improves iDC maturation and the immune efficiency of hepatitis B vaccine in BALB/c mice.
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Affiliation(s)
- Meizhen Wang
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China.,The Hospital of Nanchang University, Nanchang, People's Republic of China
| | - Wenxing Zeng
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China.,Department of Clinical Examination, Yichun City People's Hospital, Yichun, People's Republic of China
| | - Zhigang Zhang
- The Community Health Service Center of Jianbei Sub-District Administration, Hebei, People's Republic of China
| | - Weidong Zhang
- Center for Tropical Medicine and Infectious Disease, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.,Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Hong Su
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China
| | - Zhiyong Zhang
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China.,Department of Clinical Examination, Jiangxi Provincial People's Hospital, Nanchang, People's Republic of China
| | - Lixia Jiang
- Department of Clinical Examination, the First Affiliated Hospital of Gannan Medical University, Ganzhou, People's Republic of China
| | - Yulin Liu
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China
| | - Qiaofa Shi
- Department of Immunology, School of Basic Medical Sciences, Nanchang University, Nanchang, People's Republic of China.,Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology, Nanchang, People's Republic of China.,Jiangxi Province Key Laboratory of Infection and Immunity, Nanchang, People's Republic of China
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Willhite CC, Karyakina NA, Nordheim E, Arnold I, Armstrong V, Momoli F, Shilnikova NS, Yenugadhati N, Krewski D. The REACH registration process: A case study of metallic aluminium, aluminium oxide and aluminium hydroxide. Neurotoxicology 2020; 83:166-178. [PMID: 33290785 DOI: 10.1016/j.neuro.2020.12.004] [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: 10/22/2022]
Abstract
The European Union's REACH Regulation requires determination of potential health and environmental effects of chemicals in commerce. The present case study examines the application of REACH guidance for health hazard assessments of three high production volume (HPV) aluminium (Al) substances: metallic aluminium, aluminium oxide, and aluminium hydroxide. Among the potential adverse health consequences of aluminium exposure, neurotoxicity is one of the most sensitive targets of Al toxicity and the most critical endpoint. This case study illustrates integration of data from multiple lines of evidence into REACH weight of evidence evaluations. This case study then explains how those results support regulatory decisions on classification and labelling. Challenges in the REACH appraisal of Al compounds include speciation, solubility and bioavailability, application of assessment factors, read-across rationale and differences with existing regulatory standards. Lessons learned from the present case study relate to identification and evaluation of toxicologic and epidemiologic data; assessing data relevance and reliability; development of derived no-effect levels (DNELs); addressing data gaps and preparation of chemical safety reports.
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Affiliation(s)
| | - Nataliya A Karyakina
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada.
| | | | - Ian Arnold
- International Aluminium Institute, London, United Kingdom; Occupational Health Program, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | | | - Franco Momoli
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada; Faculty of Medicine, School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
| | - Natalia S Shilnikova
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada
| | - Nagarajkumar Yenugadhati
- Risk Sciences International, Ottawa, Canada; Department of Epidemiology and Biostatistics, College of Public Health and Health Informatics, King Saud bin Abdul-Aziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Daniel Krewski
- Risk Sciences International, Ottawa, Canada; McLaughlin Centre for Population Health Risk Assessment, University of Ottawa, Ottawa, Canada; Faculty of Medicine, School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
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Accumulation of Toxic Elements in Bone and Bone Marrow of Deer Living in Various Ecosystems. A Case Study of Farmed and Wild-Living Deer. Animals (Basel) 2020; 10:ani10112151. [PMID: 33227969 PMCID: PMC7699187 DOI: 10.3390/ani10112151] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/09/2020] [Accepted: 11/17/2020] [Indexed: 12/25/2022] Open
Abstract
The aim of the study was to determine the concentrations of toxic elements accumulated in the bone marrow and bones (Cervus elaphus). The studies were carried out on two groups of young stags: farmed (n = 6) and wild (n = 9). Their body weights were measured and bone and bone marrow samples were collected. The concentrations of toxic elements were analyzed using the inductively coupled plasma mass spectrometry technique. The mean aluminum content in the bone marrow and bones of the farmed animals was significantly higher than in the wild group (p < 0.05). The mean concentration of arsenic, barium and lead in the bones of the wild red deer was significantly higher than in the bones of the farmed animals (p < 0.05), while the cadmium concentration in the bones of the farmed red deer exceeded the value determined in the wild animals. A significant difference was found between the mean concentrations of aluminum, arsenic, barium, lead, vanadium and nickel in the bone marrow and bones of both red deer groups (p < 0.05). Although the study involved animals living in an uncontaminated area, the concentrations of some heavy metals were higher than values reported from industrial regions.
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Mandal R, Kaur S. Health concerns on provisional tolerable weekly intake of aluminium in children and adults from vegetables in Mandi-Gobindgarh (India). ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:2943-2962. [PMID: 32067195 DOI: 10.1007/s10653-020-00534-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 01/29/2020] [Indexed: 06/10/2023]
Abstract
Metallurgical industrial processes have been reported to cause higher aluminium (Al) exposure in humans through plant food intake due to higher soil Al content and acidification of soil resulted from industrial acid rains. Mandi-Gobindgarh is critically environmentally polluted steel industrial town in India in which Al is used for deoxidation, grain refining and alloying in steel production. The Al processing has been reported to release Al into the environment, and therefore present study was undertaken to investigate the dietary Al exposure in children and adult population of Mandi-Gobindgarh from consumption of vegetable food stuffs grown in the fields around steel industries. Thirteen vegetable types including fruit vegetables, root vegetables, and leafy vegetables (LVs) along with soil samples were collected from agricultural fields around M-site (Mandi-Gobindgarh industrial site) and C-site (control non-industrial site) and analysed for Al on WD-XRF. Higher vegetable Al content was reported due to higher soil Al content and higher acidic soil pH at M-site than C-site. Correlation coefficient data have shown positive correlation of plant/vegetable Al with soil Al whereas negative correlation with soil pH at both the sites. Hierarchical cluster analysis based on vegetable Al content and bioaccumulation factor depicted higher number of clusters of vegetables at M-site (3-clusters) than C-site (2-clusters). The hazard quotients for Al intake in children and adults were found less than one. However, the weekly dietary Al exposure data have shown more than provisional tolerable weekly intake of 2 mg/kgbw/week in them from two LVs (Spinach and Brassica) from M-site than C-site which increases health concerns in humans from Mandi-Gobindgarh.
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Affiliation(s)
- Reshu Mandal
- Department of Zoology, Panjab University, Chandigarh, UT, India.
| | - Sukhbir Kaur
- Department of Zoology, Panjab University, Chandigarh, UT, India
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Dórea JG. Neurotoxic effects of combined exposures to aluminum and mercury in early life (infancy). ENVIRONMENTAL RESEARCH 2020; 188:109734. [PMID: 32544722 DOI: 10.1016/j.envres.2020.109734] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/22/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Aluminum and mercury are environmentally ubiquitous. Individually they are both neurotoxic elements with shared neuro-pathogenic pathways: oxidative stress, altered neurotransmission, and disruption of the neuroendocrine and immune systems. In the infant, Al and Hg differ in type of exposure, absorption, distribution (brain access), and metabolism. In environmentally associated exposure (breast milk and infant formulas) their co-occurrences fluctuate randomly, but in Thimerosal-containing vaccines (TCVs) they occur combined in a proprietary ratio; in these cases, low-doses of Thimerosal-ethylmercury (EtHg) and adjuvant-Al present the most widespread binary mixture in less developed countries. Although experimental studies at low doses of the binary Hg and Al mixture are rare, when studied individually they have been shown to affect neurological outcomes negatively. In invitro systems, comparative neurotoxicity between Al and Hg varies in relation to the measured parameters but seems less for Al than for Hg. While neurotoxicity of environmental Hg (mainly fish methyl-Hg, MeHg) is associated with neurobehavioral outcomes in children, environmental Al is not associated, except in certain clinical conditions. Therefore, the issues of their neurotoxic effects (singly or combined) are discussed. In the infant (up to six months) the organic-Hg and Al body burdens from a full TCV schedule are estimated to reach levels higher than that originating from breastfeeding or from high aluminum soy-based formulas. Despite worldwide exposure to both Al and Hg (inorganic Hg, MeHg, and Thimerosal/EtHg), our knowledge on this combined exposure is insufficient to predict their combined neurotoxic effects (and with other co-occurring neurotoxicants).
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Affiliation(s)
- José G Dórea
- Universidade de Brasília, Brasília, 70919-970, DF, Brazil.
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Cao Z, Geng X, Jiang X, Gao X, Liu K, Li Y. Melatonin Attenuates AlCl 3-Induced Apoptosis and Osteoblastic Differentiation Suppression by Inhibiting Oxidative Stress in MC3T3-E1 Cells. Biol Trace Elem Res 2020; 196:214-222. [PMID: 31502178 DOI: 10.1007/s12011-019-01893-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022]
Abstract
Aluminum (Al) inhibits osteoblast-mediated bone formation by oxidative stress, resulting in Al-induced bone disease. Melatonin (MT) has received extensive attention due to its antioxidant and maintenance of bone health effect. To evaluate the protective effect and mechanism of MT on AlCl3-induced osteoblast dysfunction, MC3T3-E1 cells were treated with MT (100 μM) and/or AlCl3 (8 μM). First, MT alleviated AlCl3-induced osteoblast dysfunction, presenting as the reduced apoptosis rate as well as increased cell viability, alkaline phosphatase (ALP) activity, and type I collagen (COL-1) level. Then, MT significantly attenuated AlCl3-induced oxidative stress, presenting as the reduced reactive oxygen species and 8-hydroxy-2'-deoxyguanosine levels as well as increased glutathione level and superoxide dismutase activity. Finally, MT protected MC3T3-E1 cells against p53-dependent apoptosis and differentiation suppression, as assessed by Caspase-3 activity, protein levels of p53, Bcl-2-associated X protein (Bax), B cell lymphoma gene 2 (Bcl-2), cytosolic Cytochrome c, Runt-related transcription factor 2 (Runx2), and Osterix, as well as the mRNA levels of Bax, Bcl-2, Runx2, Osterix, ALP, and COL-1. Overall, our findings demonstrate MT attenuates AlCl3-induced apoptosis and osteoblastic differentiation suppression by inhibiting oxidative stress in MC3T3-E1 cells.
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Affiliation(s)
- Zheng Cao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, 150030, China
| | - Xue Geng
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Xinpeng Jiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Xiang Gao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Kexiang Liu
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China
| | - Yanfei Li
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, College of Veterinary Medicine, Northeast Agricultural University, NO. 600 Changjiang Street, Xiangfang District, Harbin, 150030, China.
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da Silva Lima D, da Silva Gomes L, de Sousa Figueredo E, de Godoi MM, Silva EM, da Silva Neri HF, Taboga SR, Biancardi MF, Ghedini PC, Dos Santos FCA. Aluminum exposure promotes histopathological and pro-oxidant damage to the prostate and gonads of male and female adult gerbils. Exp Mol Pathol 2020; 116:104486. [PMID: 32585149 DOI: 10.1016/j.yexmp.2020.104486] [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: 01/09/2020] [Revised: 05/21/2020] [Accepted: 06/18/2020] [Indexed: 12/19/2022]
Abstract
Since the industrial revolution, all living beings have become susceptible to numerous sources of aluminum (Al) exposure. In addition to causing proven toxicity in many organs and systems, Al can also have estrogenic activity when absorbed by the body. The reproductive organs are commonly affected by environmental pollutants with estrogenic activity, but little is known about the effects of Al on the prostate and gonads. Therefore, the aim of this study was to evaluate the effects of subchronic Al exposure on the prostate and gonads of male and female adult gerbils. After 30 days of oral exposure to aluminum chloride (10 mg/kg/day), the animals were euthanized and the organs processed for cytochemical, ultrastructural, and biochemical assays. Ventral male prostates exposed to Al became hyperplastic and showed signs of cell aging. In addition, the male prostate showed decreased catalase (CAT) and superoxide dismutase (SOD) activity. The female prostate was structurally more affected than the ventral male prostate, since it presented hyperplasia and punctual foci of inflammation and prostatic intraepithelial neoplasia. However, CAT and SOD activities did not change in this gland. In the testis, Al promoted immature germ cell detachment and degeneration, as well as reduced CAT activity. In the ovaries, Al caused reduction in folliculogenesis and decreased SOD activity. Together, these results indicate that Al is toxic to the prostate and gonads of adult gerbils and that continuous exposure to this metal can impair the fertility of individuals of both sexes.
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Affiliation(s)
- Danilo da Silva Lima
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Liana da Silva Gomes
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Esther de Sousa Figueredo
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Murion Monteiro de Godoi
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Edvaldo Mendes Silva
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Hiasmin Franciely da Silva Neri
- Department of Pharmacology, Laboratory of Molecular and Biochemistry Pharmacology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Sebastião Roberto Taboga
- Department of Biology, Laboratory of Microscopy and Microanalysis, State University of São Paulo - UNESP, Rua Cristóvão Colombo, 2265, São José do Rio Preto, São Paulo 15054000, Brazil
| | - Manoel Francisco Biancardi
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Paulo César Ghedini
- Department of Pharmacology, Laboratory of Molecular and Biochemistry Pharmacology, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil
| | - Fernanda Cristina Alcantara Dos Santos
- Department of Histology, Embryology and Cell Biology, Laboratory of Microscopy Applied to Reproduction, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Goiás 74001970, Brazil.
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Park J, Yu H, Park SH, Lee KH. Selective ratiometric red-emission detection of In 3+ in aqueous solutions and in live cells using a fluorescent peptidyl probe and metal chelating agent. Analyst 2020; 145:4031-4040. [PMID: 32364198 DOI: 10.1039/d0an00288g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Indium has been regarded as one of the most rarely used metal ions; however, the consumption of indium has increased intensively due to its increasing use in electrodes of liquid crystal displays (LCDs). In recent years, warnings have been issued about the toxicity of indium to aquatic ecosystems and humans. Thus, the development of efficient and selective detection methods for In3+ in aquatic environments as well as in live cells is highly required. However, the selective and sensitive detection of In3+ in the presence of trivalent metal ions and other metal ions is highly challenging. In the present study, we synthesized a fluorescent probe (1) for In3+ and Al3+ based on an unnatural peptide receptor and an aggregation-induced emission fluorophore and developed a selective fluorescent detection method for In3+ in aqueous solutions and live cells using the probe and a metal chelating agent. 1 recognized In3+ and Al3+ selectively among 19 metal ions in aqueous solutions depending on pH by the enhancement of the red emission at 600 nm and decrease in the green emission at 530 nm. 1 sensitively detected In3+ and Al3+ by ratiometric response in a wide pH range (3.5-7.4), and the ratiometric response was complete within 20 seconds in an aqueous buffered solution at pH 5.0. Interestingly, the addition of EDTA to the complex of 1 with In3+ or Al3+ did not induce the Al3+-free spectrum but instead induced the In3+-free spectrum; thus, In3+ and Al3+ could be easily differentiated. The detection limit of 1 for In3+ ions was 211 nM (R2 = 0.981) in purely aqueous solutions. The fluorescence ratiometric detection method using 1 could quantify low concentrations of In3+ in ground water and tap water. Fluorescence cell image studies revealed that the probe was cell-permeable, and low concentrations of In3+ inside the cells could be recognized by the enhancement of the red emission at 600 nm. The binding mode study via NMR, IR, and CD spectroscopy revealed how the peptide receptor of 1 interacted with In3+ and resulted in the enhancement of the red emission in an aqueous solution.
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Affiliation(s)
- Joohee Park
- Center for Design and Applications of Molecular Catalysts, Department of Chemistry and Chemical Engineering, Inha University, Incheon, 402-751, South Korea.
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Hasan Z, Rolle-McFarland D, Liu Y, Zhou J, Mostafaei F, Li Y, Fan Q, Zhou Y, Zheng W, Nie LH, Wells EM. Characterization of bone aluminum, a potential biomarker of cumulative exposure, within an occupational population from Zunyi, China. J Trace Elem Med Biol 2020; 59:126469. [PMID: 31982817 PMCID: PMC7112220 DOI: 10.1016/j.jtemb.2020.126469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/04/2019] [Accepted: 01/13/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Aluminum (Al) is a neurotoxicant; however, efforts to understand Al toxicity are limited by the lack of a quantitative biomarker of cumulative exposure. Bone Al measurements may address this need. Here, we describe and compare non-invasive bone Al measurements with fingernail Al and Al cumulative exposure indices (CEIs). METHODS We completed a cross-sectional study of 43 factory workers in Zunyi, China. Bone Al measurements were taken with a compact in-vivo neutron activation analysis system (IVNAA). Fingernail samples were analyzed using inductively coupled plasma mass spectrometry. CEIs, based on self-reported work history and prior literature, were calculated for the prior 5, 10, 15, 20 years and lifetime work history. Linear regressions adjusted for age and education compared fingernail Al and Al CEIs with bone Al. RESULTS Median (interquartile range (IQR)) Al measurements were: 15 μg/g dry bone (IQR = 28) for bone Al; 34.9 μg/g (43.3) for fingernail; and 24 (20) for lifetime CEI. In adjusted regression models, an increase in 15-year CEI was significantly associated with increased bone Al (β = 0.91, 95% confidence interval (CI): 0.16, 1.66). Associations of bone Al with 10- and 20-year CEI were approaching statistical significance (β = 0.98, 95% CI: -0.14, 2.1; β = 0.59, 95% CI: -0.01, 1.18, respectively). Other models were not statistically significant. CONCLUSIONS Bone Al was significantly associated with 15-year Al CEI, but not other Al CEIs or fingernail Al. Bone Al may be a useful measure of cumulative, rather than short-term, Al exposure. Additional refinement of this method is ongoing.
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Affiliation(s)
- Zainab Hasan
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
| | - Danelle Rolle-McFarland
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Yingzi Liu
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - Jieqiong Zhou
- School of Public Health, Yale University, New Haven, CT, USA
| | - Farshad Mostafaei
- Department of Radiation Oncology, University of Arizona, Tucson, AZ, USA
| | - Yan Li
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Qiyuan Fan
- Zunyi Medical and Pharmaceutical College, Zunyi, Guizhou, China
| | - Yuanzhong Zhou
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Wei Zheng
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
| | - Linda H Nie
- School of Health Sciences, Purdue University, West Lafayette, IN, USA
| | - Ellen M Wells
- School of Health Sciences, Purdue University, West Lafayette, IN, USA.
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Ogunlade B, Adelakun SA, Agie JA. Nutritional supplementation of gallic acid ameliorates Alzheimer-type hippocampal neurodegeneration and cognitive impairment induced by aluminum chloride exposure in adult Wistar rats. Drug Chem Toxicol 2020; 45:651-662. [PMID: 32329360 DOI: 10.1080/01480545.2020.1754849] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Prolonged exposure to aluminum through occupational hazards or food/water intake has been linked to the occurrence of Alzheimer's disease (AD). This study aimed at investigating the neuroprotective effects of Gallic Acid (GA) against aluminum-chloride induced AD in adult Wistar rats. Twenty eight (28) adult Wistar rats were divided into four groups (n = 7). Group A received normal saline as placebo; Group B received 200 mg/kg bw of AlCl3 only; Group C received 100 mg/kg bw of GA only and group D received 100 mg/kg bw of GA and 200 mg/kg bw of AlCl3. At the end of the 60 days experiment, blood samples were collected to obtain serum for analysis and the brain was harvested. Neurobehavioural tests (Morris Water maze, Y-Maze), neurotransmitter levels, oxidative stress markers, serum electrolytes, antioxidant enzymes and histological assessment were carried out. There was a significant decrease in antioxidant enzymes (CAT, GSH and SOD), serum electrolyte (except K+) and neurotransmitter levels (except norepinephrine) with corresponding increase in stress markers (MDA, H2O2 and NO) among group B compared to control but was restored nearly to normal after GA administration. Neurobehavioral tests showed decreased spatial memory impairment and learning deficit in group B compared to control but was ameliorated with GA administration. Histological observation showed neurofibrillary tangles and amyloid plaques in the external granular layer of group B but protected by GA administration. Nutritional supplementation of GA preserve the morphological and physiological integrity of the hippocampus against environmental neurotoxins (AlCl3) by mopping up free radicals associated with oxidative stress induced AD.
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Affiliation(s)
- B Ogunlade
- Human Anatomy Department, Federal University of Technology, Akure, Akure, Nigeria
| | - S A Adelakun
- Human Anatomy Department, Federal University of Technology, Akure, Akure, Nigeria
| | - J A Agie
- Human Anatomy Department, Federal University of Technology, Akure, Akure, Nigeria
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Jensen‐Jarolim E, Bachmann MF, Bonini S, Jacobsen L, Jutel M, Klimek L, Mahler V, Mösges R, Moingeon P, O´Hehir RE, Palomares O, Pfaar O, Renz H, Rhyner C, Roth‐Walter F, Rudenko M, Savolainen J, Schmidt‐Weber CB, Traidl‐Hoffmann C, Kündig T. State-of-the-art in marketed adjuvants and formulations in Allergen Immunotherapy: A position paper of the European Academy of Allergy and Clinical Immunology (EAACI). Allergy 2020; 75:746-760. [PMID: 31774179 DOI: 10.1111/all.14134] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/07/2019] [Accepted: 11/10/2019] [Indexed: 02/06/2023]
Abstract
Since the introduction of allergen immunotherapy (AIT) over 100 years ago, focus has been on standardization of allergen extracts, with reliable molecular composition of allergens receiving the highest attention. While adjuvants play a major role in European AIT, they have been less well studied. In this Position Paper, we summarize current unmet needs of adjuvants in AIT citing current evidence. Four adjuvants are used in products marketed in Europe: aluminium hydroxide (Al(OH)3 ) is the most frequently used adjuvant, with microcrystalline tyrosine (MCT), monophosphoryl lipid A (MPLA) and calcium phosphate (CaP) used less frequently. Recent studies on humans, and using mouse models, have characterized in part the mechanisms of action of adjuvants on pre-existing immune responses. AIT differs from prophylactic vaccines that provoke immunity to infectious agents, as in allergy the patient is presensitized to the antigen. The intended mode of action of adjuvants is to simultaneously enhance the immunogenicity of the allergen, while precipitating the allergen at the injection site to reduce the risk of anaphylaxis. Contrasting immune effects are seen with different adjuvants. Aluminium hydroxide initially boosts Th2 responses, while the other adjuvants utilized in AIT redirect the Th2 immune response towards Th1 immunity. After varying lengths of time, each of the adjuvants supports tolerance. Further studies of the mechanisms of action of adjuvants may advise shorter treatment periods than the current three-to-five-year regimens, enhancing patient adherence. Improved lead compounds from the adjuvant pipeline are under development and are explored for their capacity to fill this unmet need.
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Affiliation(s)
- Erika Jensen‐Jarolim
- Institute of Pathophysiology & Allergy Research Center of Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
- The Interuniversity Messerli Research Institute University of Veterinary Medicine Vienna Medical University of Vienna University of Vienna Vienna Austria
| | - Martin F. Bachmann
- Institute of Immunology Inselspital University of Berne Bern Switzerland
| | - Sergio Bonini
- Institute of Translational Pharmacology Italian National Research Council Rome Italy
| | - Lars Jacobsen
- ALC, Allergy Learning & Consulting Copenhagen Denmark
| | - Marek Jutel
- Department of Clinical Immunology Wroclaw Medical University Wrocław Poland
- ALL‐MED Medical Research Institute Wroclaw Poland
| | - Ludger Klimek
- Center of Rhinology and Allergology Wiesbaden Germany
| | - Vera Mahler
- Division of Allergology Paul‐Ehrlich‐Institut Federal Institute for Vaccines and Biomedicines Langen Germany
| | - Ralph Mösges
- CRI‐Clinical Research International Ltd Hamburg Germany
- Institute of Medical Statistics and Bioinformatics University of Cologne Cologne Germany
| | - Philippe Moingeon
- Center for Therapeutic Innovation – Immuno‐Inflammatory Disease Servier Suresnes France
| | - Robyn E. O´Hehir
- Department of Respiratory Medicine, Allergy and Clinical Immunology (Research) Central Clinical School Monash University and Alfred Hospital Melbourne Vic. Australia
| | - Oscar Palomares
- Department of Biochemistry and Molecular Biology Chemistry School Complutense University of Madrid Madrid Spain
| | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery Section of Rhinology and Allergy University Hospital MarburgPhilipps‐Universität Marburg Marburg Germany
| | - Harald Renz
- Institute of Laboratory Medicine Universities of Giessen and Marburg Lung Center (UGMLC) German Center for Lung Research (DZL) Philipps Universität Marburg Marburg Germany
| | - Claudio Rhyner
- SIAF – Swiss Institute of Allergy and Asthma Research Davos Switzerland
| | - Franziska Roth‐Walter
- The Interuniversity Messerli Research Institute University of Veterinary Medicine Vienna Medical University of Vienna University of Vienna Vienna Austria
| | | | - Johannes Savolainen
- Department of Pulmonary Diseases and Clinical Allergology University of Turku and Turku University Hospital Turku Finland
| | - Carsten B. Schmidt‐Weber
- Center of Allergy and Environment (ZAUM) German Center of Lung Research (DZL) and Helmholtz I&I Initiative Technical University, and Helmholtz Center Munich Munich Germany
| | - Claudia Traidl‐Hoffmann
- Institute of Environmental Medicine (IEM) Technical University Munich and Helmholtz Center Munich Munich Germany
| | - Thomas Kündig
- Department of Dermatology University Hospital Zurich Zurich Switzerland
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McFarland G, La Joie E, Thomas P, Lyons-Weiler J. Acute exposure and chronic retention of aluminum in three vaccine schedules and effects of genetic and environmental variation. J Trace Elem Med Biol 2020; 58:126444. [PMID: 31846784 DOI: 10.1016/j.jtemb.2019.126444] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/12/2019] [Accepted: 12/03/2019] [Indexed: 01/22/2023]
Abstract
Like the mechanisms of action as adjuvants, the pharmacodynamics of injected forms of aluminum commonly used in vaccines are not well-characterized, particularly with respect to how differences in schedules impact accumulation and how factors such as genetics and environmental influences on detoxification influence clearance. Previous modeling efforts are based on very little empirical data, with the model by Priest based on whole-body clearance rates estimated from a study involving a single human subject. In this analysis, we explore the expected acute exposures and longer-term whole-body accumulation/clearance across three vaccination schedules: the current US Centers for Disease Control and Prevention (CDC) schedule, the current CDC schedule using low aluminum or no aluminum vaccines, and Dr. Paul Thomas' "Vaccine Friendly Plan" schedule. We then study the effects of an implicit assumption of the Priest model on whether clearance dynamics from successive doses are influenced by the current level of aluminum or modeled by the assumption that a new dose has its own whole-body dynamics "reset" on the day of injection. We model two additional factors: variation (deficiency) in aluminum detoxification, and a factor added to the Priest equation to model the potential impact of aluminum itself on cellular and whole-body detoxification. These explorations are compared to a previously estimated pediatric dose limit (PDL) of whole-body aluminum exposure and provide a new statistic: %alumTox, the (expected) percentage of days (or weeks) an infant is in aluminum toxicity, reflecting chronic toxicity. We show that among three schedules, the CDC schedule results in the highest %alumTox regardless of model assumptions, and the Vaccine Friendly Plan schedule, which avoids >1 ACV per office visit results in the lowest (expected) %alumTox. These results are conservative, as the MSL is derived from data used by FDA to estimate safety of aluminum in adult humans. These results demonstrate high potential utility of modeling variation in patient responses to aluminum. More empirical data from individuals who are suspected of being intolerant of aluminum from vaccines, evidenced by high aluminum retention, neurodevelopmental disorders and/or a myriad of chronic illnesses would help answer questions on whether the model predictions can be used to estimate parameter values tied to genetic factors including genomic sequence variation and family history of chronic illnesses tied to aluminum exposure.
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Affiliation(s)
- Grant McFarland
- The Institute for Pure and Applied Knowledge, Pittsburgh, PA, 15101, United States
| | - Elaine La Joie
- The Institute for Pure and Applied Knowledge, Pittsburgh, PA, 15101, United States
| | - Paul Thomas
- Integrative Pediatrics, Portland, OR, 97225, United States
| | - James Lyons-Weiler
- The Institute for Pure and Applied Knowledge, Pittsburgh, PA, 15101, United States.
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46
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The Relationship between Plasma Al Levels and Multi-domain Cognitive Performance among In-service Aluminum-exposed Workers at the SH Aluminum Factory in China: A Cross-sectional Study. Neurotoxicology 2020; 76:144-152. [DOI: 10.1016/j.neuro.2019.10.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 11/21/2022]
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Abstract
Aluminum has no known biological function; however, it is a contaminant present in most foods and medications. Aluminum is excreted by the renal system, and patients with renal diseases should avoid aluminum-containing medications. Studies demonstrating long-term toxicity from the aluminum content in parenteral nutrition components led the US Food and Drug Administration to implement rules for these solutions. Large-volume ingredients were required to reduce the aluminum concentration, and small-volume components were required to be labeled with the aluminum concentration. Despite these rules, the total aluminum concentration from some components continues to be above the recommended final concentration. The concerns about toxicity from the aluminum present in infant formulas and antiperspirants have not been substantiated but require more research. Aluminum is one of the most effective adjuvants used in vaccines, and a large number of studies have documented minimal adverse effects from this use. Long-term, high-concentration exposure to aluminum has been linked in meta-analyses with the development of Alzheimer disease.
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Affiliation(s)
- Mark R Corkins
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, The University of Tennessee Health Science Center, Memphis, Tennessee
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48
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Letzel M, Drexler H, Göen T, Hiller J. Impact of Daily Antiperspirant Use on the Systemic Aluminum Exposure: An Experimental Intervention Study. Skin Pharmacol Physiol 2019; 33:1-8. [DOI: 10.1159/000502239] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/19/2019] [Indexed: 11/19/2022]
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49
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Weisser K, Göen T, Oduro JD, Wangorsch G, Hanschmann KMO, Keller-Stanislawski B. Aluminium in plasma and tissues after intramuscular injection of adjuvanted human vaccines in rats. Arch Toxicol 2019; 93:2787-2796. [DOI: 10.1007/s00204-019-02561-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/02/2019] [Indexed: 01/17/2023]
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50
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Aguilera-Correa JJ, Auñón Á, Boiza-Sánchez M, Mahillo-Fernández I, Mediero A, Eguibar-Blázquez D, Conde A, Arenas MÁ, de-Damborenea JJ, Cordero-Ampuero J, Esteban J. Urine Aluminum Concentration as a Possible Implant Biomarker of Pseudomonas aeruginosa Infection Using a Fluorine- and Phosphorus-Doped Ti-6Al-4V Alloy with Osseointegration Capacity. ACS OMEGA 2019; 4:11815-11823. [PMID: 31460290 PMCID: PMC6682075 DOI: 10.1021/acsomega.9b00898] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/10/2019] [Indexed: 06/10/2023]
Abstract
Joint prosthesis failure is mainly related to aseptic loosening and prosthetic joint infections, both associated with high morbidity and a substantial cost burden for patients and health systems. The development of a biomaterial capable of stimulating bone growth while minimizing bacterial adhesion would reduce the incidence of prosthetic failure. Using an in vivo rabbit model, this study evaluates the osseointegration effect of the fluorine (F)- and phosphorus (P)-doped bottle-shaped nanostructured (bNT) Ti-6Al-4V alloy and effectiveness of monitoring urine aluminum concentration to determine the presence of Pseudomonas aeruginosa infection in Ti-6Al-4V implants. Unlike chemically polished (CP) Ti-6Al-4V alloy implants, bNT Ti-6Al-4V alloy implants promoted osseointegration and showed effectiveness as a biomaterial marker. The bNT Ti-6Al-4V alloy implants were associated with a twofold increase in bone thickness and up to 15% greater bone density compared to the CP alloy. Additionally, bNT Ti-6Al-4V alloy implants allowed for discrimination between P. aeruginosa-infected and noninfected animals for 15 days postoperatively, as indicated by the decrease of aluminum concentration in urine, while this difference was only appreciable over the first 7 days when CP Ti-6Al-4V alloy implants were used. Therefore, bNT Ti-6Al-4V alloys could have clinical applications by detecting the infection and by avoiding aseptic loosening.
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Affiliation(s)
- John-Jairo Aguilera-Correa
- Clinical Microbiology Department, Joint and Bone Research Unit,
and Experimental Surgery and
Animal Research Service, IIS-Fundación
Jimenez Diaz, UAM. Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Álvaro Auñón
- Orthopedic Surgery Service, Pathology Department, and Epidemiology
and Biostatistics
Service, Fundación Jiménez
Díaz University Hospital, Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Macarena Boiza-Sánchez
- Orthopedic Surgery Service, Pathology Department, and Epidemiology
and Biostatistics
Service, Fundación Jiménez
Díaz University Hospital, Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Ignacio Mahillo-Fernández
- Orthopedic Surgery Service, Pathology Department, and Epidemiology
and Biostatistics
Service, Fundación Jiménez
Díaz University Hospital, Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Aranzazu Mediero
- Clinical Microbiology Department, Joint and Bone Research Unit,
and Experimental Surgery and
Animal Research Service, IIS-Fundación
Jimenez Diaz, UAM. Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Diego Eguibar-Blázquez
- Clinical Microbiology Department, Joint and Bone Research Unit,
and Experimental Surgery and
Animal Research Service, IIS-Fundación
Jimenez Diaz, UAM. Av. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Ana Conde
- Corrosion
and Material Protection Group, National
Center for Metallurgical Research (CENIM-CSIC), Av. Gregorio del Amo, 8, 28040 Madrid, Spain
| | - María-Ángeles Arenas
- Corrosion
and Material Protection Group, National
Center for Metallurgical Research (CENIM-CSIC), Av. Gregorio del Amo, 8, 28040 Madrid, Spain
| | - Juan-José de-Damborenea
- Corrosion
and Material Protection Group, National
Center for Metallurgical Research (CENIM-CSIC), Av. Gregorio del Amo, 8, 28040 Madrid, Spain
| | - José Cordero-Ampuero
- Department
of Orthopaedic Surgery, University Hospital
La Princesa, c/Diego de León 62, 28006 Madrid, Spain
| | - Jaime Esteban
- Clinical Microbiology Department, Joint and Bone Research Unit,
and Experimental Surgery and
Animal Research Service, IIS-Fundación
Jimenez Diaz, UAM. Av. Reyes Católicos, 2, 28040 Madrid, Spain
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