1
|
Dogruyol H, Mol S, Ulusoy Ş, Atanasoff A. Evaluation of Health Risks Attributed to Toxic Trace Elements and Selenium in Farmed Mediterranean Mussels from Türkiye and Bulgaria. Biol Trace Elem Res 2024:10.1007/s12011-024-04084-w. [PMID: 38296919 DOI: 10.1007/s12011-024-04084-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/28/2024] [Indexed: 02/02/2024]
Abstract
Farmed mussels accumulate contaminants from their production environment rather than releasing them into water. This study reveals potential health risks associated with selenium, cadmium, mercury, and lead resulting from the consumption of mussels (Mytilus galloprovincialis) cultured along the coasts of Türkiye and Bulgaria. The concentrations of Se and toxic trace metals were measured by inductively coupled plasma mass spectrometry (ICP-MS). The detection limits (LOD) were 0.100, 0.015, 0.025, and 0.180 µg/kg for Se, Cd, Hg, and Pb, respectively. The mean Se concentrations were between 1.305 and 1.957 µg/g, and toxic metals were below the maximum limits. Due to Turkish and Bulgarian consumers' limited mollusk consumption, mussels could only provide a maximum of 7.35% of the daily Se need. THQ and TTHQ of Se, Cd, and methyl-Hg were below 1, indicating that farmed mussels were safe for consumption. Percent PTWI values were calculated only for Cd and MeHg, as the PTWI value for Pb was discarded by the authorities and not determined for Se. Accordingly, weekly mussel consumption did not pose any risks. The margin of exposure approach was used to evaluate Pb intake. MOE-SBP and MOE-NE were significantly higher than 10, designating no significant health risks. Long-term consumption of mussels also does not pose a carcinogenic risk regarding the TR index calculated between 10-5 and 10-6 for Pb. Positive HBVSe (10.13-37.27) indicated that Se in mussels overcame Hg-related potential health concerns. Consequently, mussels grown in Türkiye and Bulgaria did not pose a risk for human consumption, based on current risk analysis methods.
Collapse
Affiliation(s)
- Hande Dogruyol
- Department of Food Safety, Faculty of Aquatic Sciences, Istanbul University, Istanbul, 34134, Türkiye.
| | - Suhendan Mol
- Department of Seafood Processing Technology, Faculty of Aquatic Sciences, Istanbul University, Istanbul, 34134, Türkiye
| | - Şafak Ulusoy
- Department of Seafood Processing Technology, Faculty of Aquatic Sciences, Istanbul University, Istanbul, 34134, Türkiye
| | - Alexander Atanasoff
- Department of Animal Husbandry, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, 6000, Bulgaria
| |
Collapse
|
2
|
Burger J, Feigin S, Ng K, Jeitner C, Tsipoura N, Niles L, Gochfeld M. Some metals and metalloids in the blood of three species of shorebirds increase while foraging during two-week migratory stopover in Delaware Bay, New Jersey. ENVIRONMENTAL RESEARCH 2023; 238:117194. [PMID: 37748669 PMCID: PMC10841762 DOI: 10.1016/j.envres.2023.117194] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/22/2023] [Accepted: 09/23/2023] [Indexed: 09/27/2023]
Abstract
Most migratory shorebird species are declining, some are endangered, and some may be vulnerable to contaminants on long distance travel between wintering grounds and high latitude breeding grounds. We examined whether shorebirds accumulated trace elements at the Delaware Bay (New Jersey) stopover by testing the null hypothesis that there was no difference in the levels of arsenic, cadmium, chromium, lead, mercury, and selenium in blood of three species of shorebirds collected early in their stopover compared to levels in blood collected about two weeks later near the end of the stopover, before departing for breeding grounds. There were significantly higher levels of all metals and metalloids in the blood of ruddy turnstone (Arenaria interpres) later in May than earlier. There were seasonal increases in blood levels of arsenic and selenium for all three species. Chromium and lead levels also increased in red knots (Calidris canutus). These increases occurred although the birds were only present for about two weeks. Levels of arsenic, mercury, and lead in knots and selenium in sanderlings (Calidrris alba), exceeded reported effects levels. These results have potential implications for studying the refueling physiology, energetics, and feeding behavior of migratory shorebirds. However, they also suggest cause for concern because the increased contaminant loads occur in a short period, and the high metal level bolus received all in a few days may result in adverse effects.
Collapse
Affiliation(s)
- Joanna Burger
- Division of Life Sciences, Rutgers University, 604 Allison Road, Piscataway, NJ, 08854-8082, USA; Environmental and Occupational Health Sciences Institute (EOHSI), Piscataway, New Jersey, 08854, USA; Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ, 08854, USA; Environmental Science Graduate Program, Rutgers University, New Brunswick, New Jersey, 08903, USA; Ecology and Evolution Graduate Program, Rutgers University, New Brunswick, New Jersey, USA, 08903.
| | - Stephanie Feigin
- Environmental Science Graduate Program, Rutgers University, New Brunswick, New Jersey, 08903, USA; Wildlife Restoration Partnership, 109 Market Land, Greenwich, N 08323, USA.
| | - Kelly Ng
- Division of Life Sciences, Rutgers University, 604 Allison Road, Piscataway, NJ, 08854-8082, USA; Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ, 08854, USA; Ecology and Evolution Graduate Program, Rutgers University, New Brunswick, New Jersey, USA, 08903.
| | - Christian Jeitner
- Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ, 08854, USA.
| | - Nellie Tsipoura
- New Jersey Audubon Society, 11 Hardscrabble Rd, Bernardsville, NJ, 07924, USA.
| | - Larry Niles
- Wildlife Restoration Partnership, 109 Market Land, Greenwich, N 08323, USA.
| | - Michael Gochfeld
- Environmental and Occupational Health Sciences Institute (EOHSI), Piscataway, New Jersey, 08854, USA; Consortium for Risk Evaluation with Stakeholder Participation, Rutgers University, Piscataway, NJ, 08854, USA; Environmental and Occupational Health & Justice, Rutgers University School of Public Health, Piscataway, New Jersey, USA, 08854.
| |
Collapse
|
3
|
Liu H, Yu Y, Chen J. Conversion mechanism of selenium on activated carbon surface: Experimental and density functional theory study. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132482. [PMID: 37688874 DOI: 10.1016/j.jhazmat.2023.132482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/24/2023] [Accepted: 09/03/2023] [Indexed: 09/11/2023]
Abstract
The mechanism of SeO2 capture by activated carbon (AC) was explored via combining experiments with density functional theory (DFT). Adsorption experiments confirmed that after mass loss coefficient correction of AC, the selenium capture capacity of AC reached 7.76 mg/g at 350 °C. AC reached a saturated selenium removal capacity of 9.93 mg/g at 50 min. The weight loss curve recorded the temperature window of selenium desorption on AC surface at about 305 °C. The XPS spectrum revealed that the decomposition and reduction behavior of SeO2 on the AC surface promoted the existence of selenium in the form of Se0. DFT calculations showed that SeO2 was chemically adsorbed on the typical Armchair and Zigzag surfaces of AC, and the adsorption energies of the most stable structures were - 89.77 and - 235.12 kcal/mol, respectively. The effect of temperature on selenium capture via AC was studied by thermodynamic and kinetic analysis. Temperature increase promoted the decomposition and reduction of SeO2 on the AC surface. Kinetic analysis further confirmed that the transformation of Se4+→Se0 was more dominated by decomposition behavior. A part of SeO2 in the gas phase was reduced to Se0 by CO and enriched on AC as elemental selenium.
Collapse
Affiliation(s)
- Hao Liu
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Yang Yu
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Juan Chen
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China.
| |
Collapse
|
4
|
Natural Compounds and Products from an Anti-Aging Perspective. Molecules 2022; 27:molecules27207084. [PMID: 36296673 PMCID: PMC9610014 DOI: 10.3390/molecules27207084] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/17/2022] Open
Abstract
Aging is a very complex process that is accompanied by a degenerative impairment in many of the major functions of the human body over time. This inevitable process is influenced by hereditary factors, lifestyle, and environmental influences such as xenobiotic pollution, infectious agents, UV radiation, diet-borne toxins, and so on. Many external and internal signs and symptoms are related with the aging process and senescence, including skin dryness and wrinkles, atherosclerosis, diabetes, neurodegenerative disorders, cancer, etc. Oxidative stress, a consequence of the imbalance between pro- and antioxidants, is one of the main provoking factors causing aging-related damages and concerns, due to the generation of highly reactive byproducts such as reactive oxygen and nitrogen species during the metabolism, which result in cellular damage and apoptosis. Antioxidants can prevent these processes and extend healthy longevity due to the ability to inhibit the formation of free radicals or interrupt their propagation, thereby lowering the level of oxidative stress. This review focuses on supporting the antioxidant system of the organism by balancing the diet through the consumption of the necessary amount of natural ingredients, including vitamins, minerals, polyunsaturated fatty acids (PUFA), essential amino acids, probiotics, plants’ fibers, nutritional supplements, polyphenols, some phytoextracts, and drinking water.
Collapse
|
5
|
Urbano T, Vinceti M, Mandrioli J, Chiari A, Filippini T, Bedin R, Tondelli M, Simonini C, Zamboni G, Shimizu M, Saito Y. Selenoprotein P Concentrations in the Cerebrospinal Fluid and Serum of Individuals Affected by Amyotrophic Lateral Sclerosis, Mild Cognitive Impairment and Alzheimer’s Dementia. Int J Mol Sci 2022; 23:ijms23179865. [PMID: 36077261 PMCID: PMC9456314 DOI: 10.3390/ijms23179865] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/26/2022] [Accepted: 08/27/2022] [Indexed: 02/06/2023] Open
Abstract
Selenoprotein P, a selenium-transporter protein, has been hypothesized to play a role in the etiology of neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) and Alzheimer’s dementia (AD). However, data in humans are scarce and largely confined to autoptic samples. In this case–control study, we determined selenoprotein P concentrations in both the cerebrospinal fluid (CSF) and the serum of 50 individuals diagnosed with ALS, 30 with AD, 54 with mild cognitive impairment (MCI) and of 30 controls, using sandwich enzyme-linked immunosorbent assay (ELISA) methods. We found a positive and generally linear association between CSF and serum selenoprotein P concentrations in all groups. CSF selenoprotein P and biomarkers of neurodegeneration were positively associated in AD, while for MCI, we found an inverted-U-shaped relation. CSF selenoprotein P concentrations were higher in AD and MCI than in ALS and controls, while in serum, the highest concentrations were found in MCI and ALS. Logistic and cubic spline regression analyses showed an inverse association between CSF selenoprotein P levels and ALS risk, and a positive association for AD risk, while an inverted-U-shaped relation with MCI risk emerged. Conversely, serum selenoprotein P concentrations were positively associated with risk of all conditions but only in their lower range. Overall, these findings indicate some abnormalities of selenoprotein P concentrations in both the central nervous system and blood associated with ALS and neurocognitive disorders, though in different directions. These alterations may reflect either phenomena of etiologic relevance or disease-induced alterations of nutritional and metabolic status.
Collapse
Affiliation(s)
- Teresa Urbano
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
| | - Marco Vinceti
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA 02118, USA
- Correspondence: ; Tel.: +39-059-2055-481
| | - Jessica Mandrioli
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Annalisa Chiari
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Tommaso Filippini
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- School of Public Health, University of California Berkeley, 1995 University Avenue, Berkeley, CA 94704, USA
| | - Roberta Bedin
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Manuela Tondelli
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Cecilia Simonini
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Giovanna Zamboni
- Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 287 Via Campi, 41125 Modena, Italy
- Neurology Unit, Azienda Ospedaliero Universitaria di Modena, 71 Via del Pozzo, 41121 Modena, Italy
| | - Misaki Shimizu
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| |
Collapse
|
6
|
Huang Y, Hu H, Fu B, Zou C, Liu H, Liu X, Wang L, Luo G, Yao H. Fine particulate-bound arsenic and selenium from coal-fired power plants: Formation, removal and bioaccessibility. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153723. [PMID: 35150677 DOI: 10.1016/j.scitotenv.2022.153723] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/23/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
The arsenic (As) and selenium (Se) in fine particulate matter (PM10) have attracted increasing attentions due to their health effects. However, the emission control of fine particulate-bound arsenic and selenium (fine particulate-bound As/Se) from coal-fired power plants still faces various challenges. Understanding the formation and characteristics of fine particulate-bound As/Se is crucial for developing specific control technologies. This study clarifies the formation mechanism, removal characteristics, and inhalation bioaccessibility of fine particulate-bound As/Se from industrial coal-fired power plants through methods including aerosol generation, As/Se speciation determination, and in vitro bioaccessibility testing. The findings demonstrated that PM1 from pulverized coal-fired (PC) boilers was enriched with As/Se in terms of concentration and mass distribution. Instead, As/Se was mainly distributed in PM2.5-10 from circulating fluidized bed (CFB) boilers. Limestone injection in CFB boilers promoted As/Se enrichment in coarse PM. Fine particulate-bound As was mainly formed by chemical adsorption of As vapors by Ca-minerals, while the formation of fine particulate-bound Se was closely related to active Ca-minerals and Fe-minerals. Furthermore, Ca-bound As was easy to remove by electrostatic precipitator (ESP) and the removal of physically adsorbed SeO2(s) was difficult, which was caused by the specific resistivity of different mineral components. Importantly, finer particulate-bound As/Se posed higher inhalation bioaccessibility, following the order of PM1 ≥ PM1-2.5 > PM2.5-10. In particular, Ca-bound Se in fine PM owned high bioaccessibility. Based on these findings, measures were proposed to suppress the formation of fine particulate-bound As/Se in the furnace and/or strengthen its removal in the post-combustion stage.
Collapse
Affiliation(s)
- Yongda Huang
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hongyun Hu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Biao Fu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chan Zou
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Huimin Liu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaowei Liu
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Linling Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Guangqian Luo
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hong Yao
- State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|
7
|
Cheng Z, Li Y, Young JL, Cheng N, Yang C, Papandonatos GD, Kelsey KT, Wise JP, Shi K, Zheng T, Liu S, Bai Y. Long-term association of serum selenium levels and the diabetes risk: Findings from a case-control study nested in the prospective Jinchang Cohort. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 818:151848. [PMID: 34822883 PMCID: PMC8909917 DOI: 10.1016/j.scitotenv.2021.151848] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 05/07/2023]
Abstract
An increasing body of evidence implicates high levels of selenium intake in the development of diabetes, although prospective studies remain sparse. We conducted a nested case-control study of 622 diabetes incident cases and 622-age, sex, and follow-up time-matched controls in the prospective Jinchang cohort of 48,001 participants with a median of 5.8 years of follow-up. Inductively coupled plasma mass spectrometry (ICP-MS) was used to measure all 622 case-control pairs' baseline serum levels of selenium (Se), which were then categorized into quartiles based on the frequency distribution among the controls. Multivariable adjusted conditional logistic regression and restricted cubic splines (RCS) models were applied to evaluate independent odds ratios (OR) as estimates for relative risks (RR) of diabetes according to quartiles (Q) of selenium levels. Compared to the lowest quartile (Q1 as reference), significantly greater diabetes risks (with 95% confidence interval) were observed in Q3 (OR = 1.62, 1.17-2.35) and Q4 (OR = 1.79, 1.21-2.64). Sub-analyses showed these increased risks of diabetes by serum levels of Se. appeared to differ by sex, age, BMI status, history of hypertension, and dyslipidemia. Further, application of RSC models showed that serum Se levels between 95 and 120 μg/L were significantly and positively associated with diabetes risk whereas no apparent relation exists when Se levels were under 95 μg/L in this cohort population.
Collapse
Affiliation(s)
- Zhiyuan Cheng
- School of Public Health and Emergency Management, Southern University of Science and Technology, 1088 Xueyuan Street, Shenzhen 518055, China
| | - Yuanyuan Li
- Key Laboratory of Environment and Health, Ministries of Education and Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Street, Wuhan, Hubei, 430030, China
| | - Jamie L Young
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 South Hancock Street, Louisville, KY 40202, USA
| | - Ning Cheng
- School of Basic Medical Science, Lanzhou University, 199 Donggang West Street, Lanzhou, Gansu 730000, China
| | - Chenhui Yang
- Key Laboratory of Environment and Health, Ministries of Education and Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Street, Wuhan, Hubei, 430030, China
| | - George D Papandonatos
- Department of Biostatistics, School of Public Health, Brown University, 121 South Main Street, Providence, RI 02901, USA
| | - Karl T Kelsey
- Department of Epidemiology, School of Public Health, Brown University, 121 South Main Street, Providence, RI 02901, USA
| | - John Pierce Wise
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 South Hancock Street, Louisville, KY 40202, USA; Wise Laboratory of Environmental and Genetic Toxicology, University of Louisville, 500 S. Preston St., 55A, Room 1422, Louisville, KY 40202, USA
| | - Kunchong Shi
- Department of Epidemiology, School of Public Health, Brown University, 121 South Main Street, Providence, RI 02901, USA
| | - Tongzhang Zheng
- Department of Epidemiology, School of Public Health, Brown University, 121 South Main Street, Providence, RI 02901, USA
| | - Simin Liu
- Department of Epidemiology, School of Public Health, Brown University, 121 South Main Street, Providence, RI 02901, USA
| | - Yana Bai
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, 199 Donggang West Street, Lanzhou, Gansu 730000, China.
| |
Collapse
|
8
|
Vinceti M, Filippini T, Jablonska E, Saito Y, Wise LA. Safety of selenium exposure and limitations of selenoprotein maximization: Molecular and epidemiologic perspectives. ENVIRONMENTAL RESEARCH 2022; 211:113092. [PMID: 35259406 DOI: 10.1016/j.envres.2022.113092] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 02/08/2023]
Abstract
Recent evidence from laboratory and epidemiologic studies has shed a different light on selenium health effects and its recommended range of environmental exposure, compared with earlier research. Specifically, epidemiologic studies in Western populations have shown adverse effects of selenium exposure at low levels, sometimes below or slightly above selenium intakes needed to maximize selenoprotein expression and activity. In addition, three recent lines of evidence in molecular and biochemical studies suggest some potential drawbacks associated with selenoprotein maximization: 1) the possibility that selenoprotein upregulation is a compensatory response to oxidative challenge, induced by selenium itself or other oxidants; 2) the capacity of selenoproteins to trigger tumor growth in some circumstances; and 3) the deleterious metabolic effects of selenoproteins and particularly of selenoprotein P. The last observation provides a toxicological basis to explain why in humans selenium intake levels as low as 60 μg/day, still in the range of selenium exposure upregulating selenoprotein expression, might start to increase risk of type 2 diabetes. Overall, these new pieces of evidence from the literature call into question the purported benefit of selenoprotein maximization, and indicate the need to reassess selenium dietary reference values and upper intake level. This reassessment should clarify which range of selenoprotein upregulation follows restoration of adequate selenium availability and which range is driven by a compensatory response to selenium toxicity and oxidative stress.
Collapse
Affiliation(s)
- Marco Vinceti
- CREAGEN Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy; Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA.
| | - Tommaso Filippini
- CREAGEN Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Ewa Jablonska
- Department of Translational Research, Nofer Institute of Occupational Medicine, Lodz, Poland
| | - Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| |
Collapse
|
9
|
Ulusoy Ş, Mol S. Trace elements in seabass, farmed by Turkey, and health risks to the main consumers: Turkish and Dutch populations. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:224. [PMID: 35217899 DOI: 10.1007/s10661-022-09806-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
Turkey ranked first in sea bass farming in Europe, and almost all extra-EU seabass come from this country. The share of Turkish sea bass in the fish consumption of Europeans has increased significantly, and assessment of potential health risks of trace metals via sea bass, cultured by Turkey, became important. The Netherlands is the main buyer of the Turkish sea bass. Therefore, potential health risks were determined for Turkish and Dutch consumers. In the study, the concentrations of lead (Pb) and mercury (Hg) were below the limits, but the level of cadmium (Cd) was above the guidelines, in spring and winter. Dietary intake and potential health risk were found higher for the Dutch consumer, but all target hazard quotients (THQs) and total THQ (TTHQ) values were well below 1, showing no significant health risk due to the consumption of sea bass, cultured and exported by Turkey. It was determined that these sea basses can be safely consumed in quite high amounts, such as at least 31 meals a month. Se/Hg molar ratios were all above 1 and selenium health benefit values (Se-HBVs) were positive, indicating that selenium (Se) had a protective effect on Hg toxicity and positive health effects. Considering the average annual intake in Turkey and Netherlands, the consumption of sea bass, cultured by Turkey, is safe. Since the risk levels of communities may differ due to their eating habits, it is important to determine the public health impacts of the international fish trade.
Collapse
Affiliation(s)
- Şafak Ulusoy
- Department of Fisheries and Seafood Processing Technology, Faculty of Aquatic Sciences, Istanbul University, On altı Mart Şehitleri St. No: 2, 34134, Vezneciler Fatih, İstanbul, Turkey.
| | - Sühendan Mol
- Department of Food Safety, Faculty of Aquatic Sciences, Istanbul University, Kalenderhane On altı Mart Şehitleri St. No:2, 34134, Vezneciler Fatih, İstanbul, Turkey
| |
Collapse
|
10
|
Urbano T, Filippini T, Lasagni D, De Luca T, Grill P, Sucato S, Polledri E, Djeukeu Noumbi G, Malavolti M, Santachiara A, Pertinhez TA, Baricchi R, Fustinoni S, Michalke B, Vinceti M. Association of Urinary and Dietary Selenium and of Serum Selenium Species with Serum Alanine Aminotransferase in a Healthy Italian Population. Antioxidants (Basel) 2021; 10:1516. [PMID: 34679651 PMCID: PMC8532767 DOI: 10.3390/antiox10101516] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/17/2021] [Accepted: 09/22/2021] [Indexed: 01/23/2023] Open
Abstract
The trace element selenium is of considerable interest due to its toxic and nutritional properties, which markedly differ according to the dose and the chemical form. It has been shown that excess selenium intake increases the risk of type 2 diabetes and, possibly, other metabolic diseases like hyperlipidemia and non-alcoholic fatty liver disease (NAFLD). For the latter, however, epidemiologic evidence is still limited. We carried out a cross-sectional study recruiting 137 healthy blood donors living in Northern Italy and assessed their exposure to selenium through different methods and measuring serum selenium species. We performed linear and spline regression analyses to assess the relation of selenium and its forms with serum alanine aminotransferase (ALT) levels, a marker of NAFLD. Urinary selenium levels were positively and somewhat linearly correlated with ALT (beta regression coefficient (β) 0.11). Conversely, the association of dietary selenium intake with ALT was positive up to 100 µg/day and null above that amount (β 0.03). Total serum selenium was inversely associated with ALT up to 120 µg/L, and slightly positive above that amount. Concerning the different serum selenium species, ALT positively correlated with two organic forms, selenocysteine (β 0.27) and glutathione peroxidase-bound selenium (β 0.09), showed a U-shaped relation with the inorganic tetravalent form, selenite, and an inverse association with human serum albumin-bound selenium (β -0.56). Our results suggest that overall exposure to selenium, and more specifically to some of its chemical forms, is positively associated with ALT, even at levels so far generally considered to be safe. Our findings add to the evidence suggesting that low-dose selenium overexposure is associated with NAFLD.
Collapse
Affiliation(s)
- Teresa Urbano
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (T.U.); (T.F.); (G.D.N.); (M.M.)
| | - Tommaso Filippini
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (T.U.); (T.F.); (G.D.N.); (M.M.)
| | - Daniela Lasagni
- Transfusion Medicine Unit, Azienda USL-IRCCS of Reggio Emilia, 42123 Reggio Emilia, Italy; (D.L.); (T.D.L.); (T.A.P.); (R.B.)
| | - Tiziana De Luca
- Transfusion Medicine Unit, Azienda USL-IRCCS of Reggio Emilia, 42123 Reggio Emilia, Italy; (D.L.); (T.D.L.); (T.A.P.); (R.B.)
| | - Peter Grill
- Research Unit Analytical BioGeoChemistry, German Research Center for Environmental Health, Helmholtz Center Munich, 85764 Neuherberg, Germany; (P.G.); (B.M.)
| | - Sabrina Sucato
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy; (S.S.); (E.P.); (S.F.)
| | - Elisa Polledri
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy; (S.S.); (E.P.); (S.F.)
| | - Guy Djeukeu Noumbi
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (T.U.); (T.F.); (G.D.N.); (M.M.)
| | - Marcella Malavolti
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (T.U.); (T.F.); (G.D.N.); (M.M.)
| | | | - Thelma A. Pertinhez
- Transfusion Medicine Unit, Azienda USL-IRCCS of Reggio Emilia, 42123 Reggio Emilia, Italy; (D.L.); (T.D.L.); (T.A.P.); (R.B.)
- Department of Medicine and Surgery, University of Parma, 43125 Parma, Italy
| | - Roberto Baricchi
- Transfusion Medicine Unit, Azienda USL-IRCCS of Reggio Emilia, 42123 Reggio Emilia, Italy; (D.L.); (T.D.L.); (T.A.P.); (R.B.)
| | - Silvia Fustinoni
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy; (S.S.); (E.P.); (S.F.)
- IRCCS Ca’ Granda Foundation Maggiore Policlinico Hospital, 20122 Milan, Italy
| | - Bernhard Michalke
- Research Unit Analytical BioGeoChemistry, German Research Center for Environmental Health, Helmholtz Center Munich, 85764 Neuherberg, Germany; (P.G.); (B.M.)
| | - Marco Vinceti
- CREAGEN—Environmental, Genetic and Nutritional Epidemiology Research Center, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (T.U.); (T.F.); (G.D.N.); (M.M.)
- Department of Epidemiology, Boston University School of Public Health, Boston, MA 02118, USA
| |
Collapse
|
11
|
Associations between Urinary and Dietary Selenium and Blood Metabolic Parameters in a Healthy Northern Italy Population. Antioxidants (Basel) 2021; 10:antiox10081193. [PMID: 34439441 PMCID: PMC8389012 DOI: 10.3390/antiox10081193] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/23/2021] [Accepted: 07/23/2021] [Indexed: 12/13/2022] Open
Abstract
Selenium is both an essential nutrient and a highly toxic element, depending on its dose and chemical forms. We aimed to quantify urinary selenium excretion and dietary selenium intake in 137 healthy non-smoking blood donors living in the northern Italian province of Reggio Emilia. We assessed selenium status by determining urinary selenium levels (mean 26.77 µg/L), and by estimating dietary selenium intake (mean 84.09 µg/day) using a validated semi-quantitative food frequency questionnaire. Fasting blood levels of glucose, lipids and thyroid-stimulating hormone were measured using automatized laboratory procedures. Dietary and urinary selenium were correlated (beta coefficient (β) = 0.19). Despite this, the association of the two indicators with health endpoints tended to diverge. Using linear regression analysis adjusted for age, sex, body mass index, cotinine levels and alcohol intake, we observed a positive association between urinary selenium and blood triglyceride (β = 0.14), LDL-cholesterol (β = 0.07) and glucose levels (β = 0.08), and an inverse one with HDL-cholesterol (β = −0.12). Concerning dietary selenium, a slightly positive association could be found with glycemic levels only (β = 0.02), while a negative one emerged for other endpoints. The two selenium indicators showed conflicting and statistically highly imprecise associations with circulating TSH levels. Our findings suggest that higher selenium exposure is adversely associated with blood glucose levels and lipid profile. This is the case even at selenium exposures not exceeding tolerable upper intake levels according to current guidelines.
Collapse
|
12
|
Sakamaki-Ching S, Williams M, Hua M, Li J, Bates SM, Robinson AN, Lyons TW, Goniewicz ML, Talbot P. Correlation between biomarkers of exposure, effect and potential harm in the urine of electronic cigarette users. BMJ Open Respir Res 2021; 7:7/1/e000452. [PMID: 32079607 PMCID: PMC7047495 DOI: 10.1136/bmjresp-2019-000452] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 12/04/2019] [Accepted: 12/30/2019] [Indexed: 12/17/2022] Open
Abstract
Objectives To determine if urinary biomarkers of effect and potential harm are elevated in electronic cigarette users compared with non-smokers and if elevation correlates with increased concentrations of metals in urine. Study design and setting This was a cross-sectional study of biomarkers of exposure, effect and potential harm in urine from non-smokers (n=20), electronic cigarette users (n=20) and cigarette smokers (n=13). Participant’s screening and urine collection were performed at the Roswell Park Comprehensive Cancer Center, and biomarker analysis and metal analysis were performed at the University of California, Riverside. Results Metallothionein was significantly elevated in the electronic cigarette group (3761±3932 pg/mg) compared with the non-smokers (1129±1294 pg/mg, p=0.05). 8-OHdG (8-hydroxy-2′-deoxyguanosine) was significantly elevated in electronic cigarette users (442.8±300.7 ng/mg) versus non-smokers (221.6±157.8 ng/mg, p=0.01). 8-Isoprostane showed a significant increase in electronic cigarette users (750.8±433 pg/mg) versus non-smokers (411.2±287.4 pg/mg, p=0.03). Linear regression analysis in the electronic cigarette group showed a significant correlation between cotinine and total metal concentration; total metal concentration and metallothionein; cotinine and oxidative DNA damage; and total metal concentration and oxidative DNA damage. Zinc was significantly elevated in the electronic cigarette users (584.5±826.6 µg/g) compared with non-smokers (413.6±233.7 µg/g, p=0.03). Linear regression analysis showed a significant correlation between urinary zinc concentration and 8-OHdG in the electronic cigarette users. Conclusions This study is the first to investigate biomarkers of potential harm and effect in electronic cigarette users and to show a linkage to metal exposure. The biomarker levels in electronic cigarette users were similar to (and not lower than) cigarette smokers. In electronic cigarette users, there was a link to elevated total metal exposure and oxidative DNA damage. Specifically, our results demonstrate that zinc concentration was correlated to oxidative DNA damage.
Collapse
Affiliation(s)
- Shane Sakamaki-Ching
- Department of Cell, Molecular, and Developmental Biology, University of California Riverside, Riverside, California, USA
| | - Monique Williams
- Department of Toxicology, University of California Riverside, Riverside, California, USA
| | - My Hua
- Department of Toxicology, University of California Riverside, Riverside, California, USA
| | - Jun Li
- Department of Statistics, University of California Riverside, Riverside, California, USA
| | - Steve M Bates
- Department of Earth and Planetary Sciences, University of California Riverside, Riverside, California, USA
| | - Andrew N Robinson
- Department of Earth and Planetary Sciences, University of California Riverside, Riverside, California, USA
| | - Timothy W Lyons
- Department of Earth and Planetary Sciences, University of California Riverside, Riverside, California, USA
| | | | - Prue Talbot
- Department of Cell, Molecular, and Developmental Biology, University of California Riverside, Riverside, California, USA
| |
Collapse
|
13
|
Sarigiannis DA, Papaioannou N, Handakas E, Anesti O, Polanska K, Hanke W, Salifoglou A, Gabriel C, Karakitsios S. Neurodevelopmental exposome: The effect of in utero co-exposure to heavy metals and phthalates on child neurodevelopment. ENVIRONMENTAL RESEARCH 2021; 197:110949. [PMID: 33716031 DOI: 10.1016/j.envres.2021.110949] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 12/27/2020] [Accepted: 02/25/2021] [Indexed: 05/22/2023]
Abstract
In this study, the exposome paradigm has been applied on a mother-child cohort adopting an optimised untargeted metabolomics approach for human urine followed by advanced bioinformatics analysis. Exposome-wide association algorithms were used to draw links between in utero co-exposure to metals and phthalates, metabolic pathways deregulation, and clinically observed phenotypes of neurodevelopmental disorders such as problems in linguistic, motor development and cognitive capacity. Children (n = 148) were tested at the first and second year of their life using the Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III). Their mothers had been exposed to metals and phthalates during the pregnancy, according to human biomonitoring results from previously performed studies. Untargeted metabolomics analysis of biobanked urine samples from the mothers was performed using a combination of the high throughput analytical methods liquid chromatography-high resolution mass spectrometry (LC-HRMS) and nuclear magnetic resonance (NMR). Most perturbed metabolic pathways from co-exposure heavy metals and phthalates were pathways related to the tricarboxylic acid cycle (TCA cycle) and oxidative phosphorylation, indicating the possibility of disruption of mitochondrial respiration. Overproduction of reactive oxygen species (ROS); the presence of glutathione peroxidase 3 (GPx3) during pregnancy and presence of glutathione peroxidase 1 (GPx1) in the umbilical cord were linked to verbal development problems. Another finding of the study is that in real life, adverse outcomes occur as a combination of environmental and social factors, all of them acting synergistically towards the deployment of an observed phenotype. Finally, the two-steps association process (exposure to pathways and pathways to adverse outcomes) was able to (a) provide associations that are not evident by directly associating exposure to outcomes and (b) provides additional insides on the mechanisms of environmental disease.
Collapse
Affiliation(s)
- Denis A Sarigiannis
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10thkm Thessaloniki-Thermi Road, 57001, Greece; School for Advanced Study (IUSS), Science, Technology and Society Department, Environmental Health Engineering, Piazza Della Vittoria 15, Pavia, 27100, Italy.
| | - Nafsika Papaioannou
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10thkm Thessaloniki-Thermi Road, 57001, Greece
| | - Evangelos Handakas
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece
| | - Ourania Anesti
- HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10thkm Thessaloniki-Thermi Road, 57001, Greece; School of Medicine, University of Crete, Voutes, Heraklion, 71003, Greece
| | - Kinga Polanska
- Nofer Institute of Occupational Medicine, 91348, Lodz, Poland
| | - Woijcek Hanke
- Nofer Institute of Occupational Medicine, 91348, Lodz, Poland
| | - Athanasios Salifoglou
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Inorganic Chemistry Laboratory, University Campus, Thessaloniki, 54124, Greece
| | - Catherine Gabriel
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10thkm Thessaloniki-Thermi Road, 57001, Greece
| | - Spyros Karakitsios
- Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, University Campus, Thessaloniki, 54124, Greece; HERACLES Research Center on the Exposome and Health, Center for Interdisciplinary Research and Innovation, Balkan Center, Bldg. B, 10thkm Thessaloniki-Thermi Road, 57001, Greece
| |
Collapse
|
14
|
Environmental Impacts of Selenium Contamination: A Review on Current-Issues and Remediation Strategies in an Aqueous System. WATER 2021. [DOI: 10.3390/w13111473] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In both aquatic and terrestrial environment, selenium contamination may exist at concentrations above the micronutrient limit. Since there is such a narrow bandwidth between which selenium concentration is acceptable, the health of the public may be at risk of selenium toxicity once the concentration increases beyond a threshold. Selenium contamination in an aqueous environment can occur due to anthropogenic activities and/or from natural sources. This study presents a review of the forms of selenium, inorganic and organic selenium contamination, mobilization, analytical methods for various forms of selenium and remediation strategies. The review also provides recent advances in removal methods for selenium from water including bioremediation, precipitation, coagulation, electrocoagulation, adsorption, nano-zerovalent iron, iron co-precipitation and other methods. A review of selenomethionine and selenocysteine removal strategy from industrial wastewaters is presented. Selenium resource recovery from copper ore processing has been discussed. Various analytical methods used for selenium and heavy metal analysis were compared. Importantly, existing knowledge gaps were identified and prospective areas for further research were recommended.
Collapse
|
15
|
Wang Y, Ye H, Qiao L, Du C, Wei Z, Wang T, Wang J, Liu R, Wang P. Intestinal Anti-Inflammatory Effects of Selenized Ulva pertusa Polysaccharides in a Dextran Sulfate Sodium-Induced Inflammatory Bowel Disease Model. J Med Food 2021; 24:236-247. [PMID: 33739884 DOI: 10.1089/jmf.2020.4787] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The purpose of this study was to examine the alleviative effects of selenized polysaccharides from Ulva pertusa (ulvan-Se) on inflammatory bowel disease (IBD) in mice. The dextran sulfate sodium (DSS)-induced IBD mouse model was used to explore the protective effects of ulvan-Se on the intestinal mechanical and immune barrier. At doses less than 1208 mg/kg·bw ulvan-Se showed no significant damage to Institute of Cancer Research (ICR) mice in an acute toxicity test. The results showed that DSS destroyed the mechanical barrier, which includes epithelial cells, while ulvan-Se promoted mRNA expression of tight junction proteins (zonula occludens protein 1, occludin, and claudin-1) and inhibited the infiltration of white blood cells into the intestines. At 100 mg/kg·bw, ulvan-Se enhanced the antioxidant capacity of mice more effectively than the 50 mg/kg·bw ulvan-Se. Furthermore, ulvan-Se improved the intestinal immune barrier by increasing immunoglobulin A and immunoglobulin M, while regulating the levels of interleukin (IL)-1β, interferon-γ, and IL-4. Oral administration of ulvan-Se also suppressed tumor necrosis factor-α, IL-1β, IL-6, and cyclooxygenase-2 mRNA expression mediated by the nuclear factor kappa B pathway. Taken together, our findings reveal that ulvan-Se could be used as a potential alternative supplement for reducing intestinal inflammation in IBD.
Collapse
Affiliation(s)
- Yifan Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China.,State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Beijing, China
| | - Han Ye
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Leke Qiao
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Chunying Du
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | | | - Ting Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jingfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Ruizhi Liu
- State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Beijing, China
| | - Peng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| |
Collapse
|
16
|
Naderi M, Puar P, Zonouzi-Marand M, Chivers DP, Niyogi S, Kwong RWM. A comprehensive review on the neuropathophysiology of selenium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 767:144329. [PMID: 33445002 DOI: 10.1016/j.scitotenv.2020.144329] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/05/2020] [Accepted: 12/05/2020] [Indexed: 05/25/2023]
Abstract
As an essential micronutrient, selenium (Se) exerts its biological function as a catalytic entity in a variety of enzymes. From a toxicological perspective, however, Se can become extremely toxic at concentrations slightly above its nutritional levels. Over the last few decades, there has been a growing level of concern worldwide regarding the adverse effects of both inorganic and organic Se compounds on a broad spectrum of neurological functions. A wealth of evidence has shown that exposure to excess Se may compromise the normal functioning of various key proteins, neurotransmitter systems (the glutamatergic, dopaminergic, serotonergic, and cholinergic systems), and signaling molecules involved in the control and regulation of cognitive, behavioral, and neuroendocrine functions. Elevated Se exposure has also been suspected to be a risk factor for the development of several neurodegenerative and neuropsychiatric diseases. Nonetheless, despite the various deleterious effects of excess Se on the central nervous system (CNS), Se neurotoxicity and negative behavioral outcomes are still disregarded at the expense of its beneficial health effects. This review focuses on the current state of knowledge regarding the neurobehavioral effects of Se and discusses its potential mode of action on different aspects of the central and peripheral nervous systems. This review also provides a brief history of Se discovery and uses, its physicochemical properties, biological roles in the CNS, environmental occurrence, and toxicity. We also review potential links between exposure to different forms of Se compounds and aberrant neurobehavioral functions in humans and animals, and identify key knowledge gaps and hypotheses for future research.
Collapse
Affiliation(s)
- Mohammad Naderi
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada.
| | - Pankaj Puar
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | | | - Douglas P Chivers
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada
| | - Som Niyogi
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada; Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK S7N 5B3, Canada
| | | |
Collapse
|
17
|
Tisdale CA, Leaphart JC, Beasley JC, Martin JA. Accumulation of Contaminants by Wild Turkeys and Potential for Consumer Exposure. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1222-1231. [PMID: 33332657 DOI: 10.1002/etc.4967] [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: 09/06/2020] [Revised: 10/14/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
Despite their popularity as a game species across North America, little is known about contaminant burdens in wild turkeys (Meleagris gallopavo) inhabiting areas of environmental contamination, and their potential to expose human and wildlife consumers. We compared trace element concentrations and radionuclide activity in muscle and liver tissues of turkeys inhabiting the Savannah River Site (USA), an area with known anthropogenic contaminant inputs, with turkeys from uncontaminated areas offsite. In addition, we tested breast feathers from a subset of individuals for mercury (Hg) to assess the viability of nonlethal sampling for quantifying Hg concentrations. Finally, we quantified arsenic, Hg, and selenium (Se) in blood of live-captured turkeys inhabiting a coal ash basin on the Savannah River Site. Compared with reference samples, we found that turkeys inhabiting the Savannah River Site contained elevated Hg levels in both muscle and liver tissues, and lower concentrations of chromium. Turkeys from the ash basin also had elevated levels of Se. We found a positive correlation between breast muscle and feather Hg concentrations (F1,59 = 267.5, R2 = 0.82, p < 0.001), suggesting that feathers can potentially be used as a nonlethal sampling technique. All elements analyzed were below reference limits set by the Centers for Disease Control and Prevention for safe consumption. Thus, our data suggest that turkeys likely are not an important pathway of contaminant exposure on the Savannah River Site or other areas with similar contaminant distributions. Environ Toxicol Chem 2021;40:1222-1231. © 2020 SETAC.
Collapse
Affiliation(s)
- Cody A Tisdale
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, South Carolina, USA
| | - James C Leaphart
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, South Carolina, USA
| | - James C Beasley
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, South Carolina, USA
| | - James A Martin
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, South Carolina, USA
| |
Collapse
|
18
|
Burger J, Gochfeld M. Biomonitoring selenium, mercury, and selenium:mercury molar ratios in selected species in Northeastern US estuaries: risk to biota and humans. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18392-18406. [PMID: 33471308 PMCID: PMC9624179 DOI: 10.1007/s11356-020-12175-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 12/21/2020] [Indexed: 05/09/2023]
Abstract
The mutual mitigation of selenium and mercury toxicity is particularly interesting, especially for humans. Mercury is widely recognized as a pantoxic element; all forms are toxic to all organisms. Less well known is that selenium in excess is toxic as well. The high affinity between these elements influences their bioavailability and toxicity. In this paper, we use selected species from Barnegat and Delaware Bays in New Jersey to examine variations in levels of selenium and mercury, and selenium:mercury molar ratios between and within species. We report on species ranging from horseshoe crab eggs (Limulus polyphemus), a keystone species of the food chain, to several fish species, to fish-eating birds. Sampling began in the 1970s for some species and in the 1990s for others. We found no clear time trends in mercury levels in horseshoe crab eggs, but selenium levels declined at first, then remained steady after the mid1990s. Concentrations of mercury and selenium in blood of migrant shorebirds directly reflected levels in horseshoe crab eggs (their food at stopover). Levels of mercury in eggs of common terns (Sterna hirundo) varied over time, and may have declined slightly since the mid2000s; selenium levels also varied temporally, and declined somewhat. There were variations in mercury and selenium levels in commercial, recreational, and subsistence fish as a function of species, season, and size (a surrogate for age). Selenium:mercury molar ratios also varied as a function of species, year, season, and size in fish. While mercury levels increased with size within individual fish species, selenium levels remained the same or declined. Thus selenium:mercury molar ratios declined with size in fish, reducing the potential of selenium to ameliorate mercury toxicity in consumers. Mercury levels in fish examined were higher in early summer and late fall, and lower in the summer, while selenium stayed relatively similar; thus selenium:mercury molar ratios were lower in early summer and late fall than in midsummer. We discuss the importance of temporal trends in biomonitoring projects, variations in levels of mercury, selenium, and the molar ratios as a function of several variables, and the influence of these on risks to predators and humans eating the fish, and the eggs of gulls, terns. Our data suggests that variability limits the utility of the selenium:mercury molar ratio for fish consumption advisories and for risk management.
Collapse
Affiliation(s)
- Joanna Burger
- Division of Life Science, Rutgers University, 604 Allison Road, Piscataway, NJ, 08854, USA.
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, 08854, USA.
| | - Michael Gochfeld
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, 08854, USA
- Rutgers Biomedical and Health Sciences, Piscataway, NJ, 08854, USA
| |
Collapse
|
19
|
Gochfeld M, Burger J. Mercury interactions with selenium and sulfur and the relevance of the Se:Hg molar ratio to fish consumption advice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18407-18420. [PMID: 33507504 PMCID: PMC8026698 DOI: 10.1007/s11356-021-12361-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 01/02/2021] [Indexed: 05/20/2023]
Abstract
Eating fish is often recommended as part of a healthful diet. However, fish, particularly large predatory fish, can contain significant levels of the highly toxic methylmercury (MeHg). Ocean fish in general also contain high levels of selenium (Se), which is reported to confer protection against toxicity of various metals including mercury (Hg). Se and Hg have a high mutual binding affinity, and each can reduce the toxicity of the other. This is an evolving area of extensive research and controversy with variable results in the animal and epidemiologic literature. MeHg is toxic to many organ systems through high affinity for -SH (thiol) ligands on enzymes and microtubules. Hg toxicity also causes oxidative damage particularly to neurons in the brain. Hg is a potent and apparently irreversible inhibitor of the selenoenzymes, glutathione peroxidases (GPX), and thioredoxin reductases (TXNRD) that are important antioxidants, each with a selenocysteine (SeCys) at the active site. Hg binding to the SeCys inhibits these enzymes, accounting in part for the oxidative damage that is an important manifestation of Hg toxicity, particularly if there is not a pool of excess Se to synthesize new enzymes. A molar excess of Se reflected in an Se:Hg molar ratio > 1 is often invoked as evidence that the Hg content can be discounted. Some recent papers now suggest that if the Se:Hg molar ratio exceeds 1:1, the fish is safe and the mercury concentration can be ignored. Such papers suggested that the molar ratio rather than the Hg concentration should be emphasized in fish advisories. This paper examines some of the limitations of current understanding of the Se:Hg molar ratio in guiding fish consumption advice; Se is certainly an important part of the Hg toxicity story, but it is not the whole story. We examine how Hg toxicity relates also to thiol binding. We suggest that a 1:1 molar ratio cannot be relied on because not all of the Se in fish or in the fish eater is available to interact with Hg. Moreover, in some fish, Se levels are sufficiently high to warrant concern about Se toxicity.
Collapse
Affiliation(s)
- Michael Gochfeld
- Rutgers Biomedical and Health Sciences, School of Public Health, Piscataway, NJ, USA.
- Environmental and Occupational Health Sciences Institutes, Rutgers University, Piscataway, NJ, 08854, USA.
| | - Joanna Burger
- Environmental and Occupational Health Sciences Institutes, Rutgers University, Piscataway, NJ, 08854, USA
- Division of Life Science, Rutgers University, 604 Allison Road, Piscataway, NJ, 08854, USA
| |
Collapse
|
20
|
Autochthonous and international grape varieties grown in Serbia - Phenolic and elemental composition. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
21
|
The Function of Selenium in Central Nervous System: Lessons from MsrB1 Knockout Mouse Models. Molecules 2021; 26:molecules26051372. [PMID: 33806413 PMCID: PMC7961861 DOI: 10.3390/molecules26051372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 11/17/2022] Open
Abstract
MsrB1 used to be named selenoprotein R, for it was first identified as a selenocysteine containing protein by searching for the selenocysteine insert sequence (SECIS) in the human genome. Later, it was found that MsrB1 is homologous to PilB in Neisseria gonorrhoeae, which is a methionine sulfoxide reductase (Msr), specifically reducing L-methionine sulfoxide (L-Met-O) in proteins. In humans and mice, four members constitute the Msr family, which are MsrA, MsrB1, MsrB2, and MsrB3. MsrA can reduce free or protein-containing L-Met-O (S), whereas MsrBs can only function on the L-Met-O (R) epimer in proteins. Though there are isomerases existent that could transfer L-Met-O (S) to L-Met-O (R) and vice-versa, the loss of Msr individually results in different phenotypes in mice models. These observations indicate that the function of one Msr cannot be totally complemented by another. Among the mammalian Msrs, MsrB1 is the only selenocysteine-containing protein, and we recently found that loss of MsrB1 perturbs the synaptic plasticity in mice, along with the astrogliosis in their brains. In this review, we summarized the effects resulting from Msr deficiency and the bioactivity of selenium in the central nervous system, especially those that we learned from the MsrB1 knockout mouse model. We hope it will be helpful in better understanding how the trace element selenium participates in the reduction of L-Met-O and becomes involved in neurobiology.
Collapse
|
22
|
Koseoglu E, Kutuk B, Nalbantoglu OU, Koseoglu R, Kendirci M. Arsenic and selenium measurements in nail and hair show important relationships to Alzheimer's disease in the elderly. J Trace Elem Med Biol 2021; 64:126684. [PMID: 33285443 DOI: 10.1016/j.jtemb.2020.126684] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/29/2020] [Accepted: 11/06/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND RESEARCH QUESTION The relationships of Arsenic (As) and selenium (Se) to Alzheimer's Disease (AD) are not clearly known. This case-control observational study aims to investigate the possible relationship of these elements to the diagnosis and pathophysiology of the disease. METHODS This case-control observational study was performed using 40 AD patients in different clinical stages and 40 healthy control subjects, living in a similar environment with low As exposure. The levels of As and Se in nail and hair were measured with Inductively Coupled Plasma Mass Spectrometry. The results were analysed with regards to clinical condition, age, disease duration, sex, education, living environment, and the relationship of the two elements using Mann Whitney U test and Spearman Rho or Pearson correlation tests as appropriate. RESULTS The levels of As and Se were not related to age, disease duration, sex, education, or living environment in the study groups (p > 0.05). The levels of As and Se in hair and nail samples of all patients and patient subgroups were higher than those in the healthy subjects (p < 0.001). A positive correlation was found between the levels of As and Se in both hair and nail samples only in the patient group (p < 0.01). CONCLUSION According to the results, As and Se levels probably increase due to some metabolic or genetic factors affecting both of them together. There may be an increase in the unregulated pool (selenomethionine) and a decrease in the regulated pool of Se (selenosycteine) in AD. Our findings need verification and the subject seems to deserve more elaborate evaluations including genetic analyses and analysis of different chemical forms of these elements.
Collapse
Affiliation(s)
- Emel Koseoglu
- Erciyes University, Medicine Faculty, Neurology Department, Kayseri, Turkey.
| | - Burak Kutuk
- Erciyes University, Medicine Faculty, Neurology Department, Kayseri, Turkey
| | | | - Rahmi Koseoglu
- Erciyes University, Science Faculty, Physics Department, Kayseri, Turkey
| | - Murat Kendirci
- Erciyes University, Medicine Faculty, Neurology Department, Kayseri, Turkey
| |
Collapse
|
23
|
Virtual screening and assessment of anticancer potential of selenium-based compounds against HL-60 and MCF7 cells. Future Med Chem 2020; 12:2191-2207. [PMID: 33243002 DOI: 10.4155/fmc-2020-0110] [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: 11/17/2022] Open
Abstract
Aim: Selenium-based compounds have antitumor potential. We used a ligand-based virtual screening analysis to identify selenoglycolicamides with potential antitumor activity. Results & Conclusion: Compounds 3, 6, 7 and 8 were selected for in vitro cytotoxicity tests against various cell lines, according to spectrophotometry results. Compound 3 presented the best cytotoxicity results against a promyelocytic leukemia line (HL-60) and was able to induce cell death at a frequency similar to that observed for doxorubicin. The docking study showed that compound 3 has good interaction energies with the targets caspase-3, 7 and 8, which are components of the apoptotic pathway. These results suggested that selenium has significant pharmacological potential for the selective targeting of tumor cells, inducing molecular and cellular events that culminate in tumor cell death.
Collapse
|
24
|
Behar A, Dennouni-Medjati N, Harek Y, Dali-Sahi M, Belhadj M, Meziane FZ. Selenium overexposure induces insulin resistance: In silico study. Diabetes Metab Syndr 2020; 14:1651-1657. [PMID: 32898742 DOI: 10.1016/j.dsx.2020.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND AIMS Several studies raise concerns about the possible association of high selenium exposure with insulin resistance and type 2 diabetes. This in silico study proposes a possible mechanism of insulin resistance in the case of overexposure to selenium. METHOD A study was carried out using molecular modeling, where cysteines of the insulin-receptor are replaced by selenocysteines. Calculation of the interaction energy of the receptor was performed in both cases with Auto Dock Tools and Vina 4.2 software to predict whether the substitution of amino acid could lead to destabilization of the protein-ligand complex and therefore possibly insulin resistance. Finally, the docked complex was analyzed by using BIOVIA Discovery Studio Visualizer to show the type of interactions between the ligands and insulin-receptor, and to determine the distance of the ligands from the binding site on insulin-receptor. RESULTS The results show that the substitution of cysteine by selenocysteine in the insulin receptor does not lead to stabilization of the complex receptor/insulin, but to its disruption.In addition, the types and the number of bonds between insulin and its receptor in the two cases are different, where 7 strong bonds between insulin and its receptor were found in the case of the cysteine complex compared to 6 weak bonds in the second case. CONCLUSION Findings of this study suggest that misincorporation of selenocysteines in insulin receptor could lead to destabilization of the insulin-receptor complex and therefore may possibly cause an insulin resistance.
Collapse
Affiliation(s)
- Ammaria Behar
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| | - Nouria Dennouni-Medjati
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| | - Yahia Harek
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| | - Majda Dali-Sahi
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| | - Moussa Belhadj
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| | - Fatima Zahra Meziane
- Aboubekr Belkaid University of Tlemcen, Analytical Chemistry and Electrochemistry Laboratory, Tlemcen 13000, Algeria.
| |
Collapse
|
25
|
Chawla R, Filippini T, Loomba R, Cilloni S, Dhillon KS, Vinceti M. Exposure to a high selenium environment in Punjab, India: Biomarkers and health conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:134541. [PMID: 31862262 DOI: 10.1016/j.scitotenv.2019.134541] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Seleniferous areas have been identified and described in many parts of the world. Despite the interest in selenium as a trace element of considerable toxicologic and nutritional relevance, however, only a few studies have been carried out on human health effects of such high selenium environments. We collected blood, hair and nail samples from 680 adult volunteers (267 men and 413 women) living in seven villages located in the seleniferous area of Punjab, India. We measured selenium levels in these specimens. We also administered a questionnaire to collect information about diet and other lifestyle characteristics, to identify the sources of selenium exposure and to correlate it with a number of health conditions. Serum and hair selenium contents were highly correlated, while the association of these biomarkers with nail selenium content was weaker. Serum selenium showed limited association with consumption of locally produced foods, while pulses and vegetables, along with cereals and pulses, were associated to higher hair and nail selenium contents, respectively. Association of a number of adverse health endpoints with serum and hair selenium was stronger than for nail selenium contents. Such endpoints included higher prevalence of nausea and vomiting, bad breath, worm infestation, breathlessness exert and bad breath, chest pain, hair and nail abnormalities and loss, garlic odor, edema, spontaneous abortion, and overall selenosis. In contrast, we gathered no evidence of dermatitis or loss of appetite in residents most exposed to selenium. Overall, and despite some statistical imprecision in effect estimates, these results confirm the occurrence of adverse health effects in subjects exposed to high levels of environmental selenium. Nail selenium contents may be less adequate to reflect and monitor such overexposure, compared with blood and hair levels.
Collapse
Affiliation(s)
- Rajinder Chawla
- Christian Medical College & Hospital, Ludhiana, India; Accuscript Consultancy, Ludhiana, India
| | - Tommaso Filippini
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Rinchu Loomba
- Christian Medical College & Hospital, Ludhiana, India
| | - Silvia Cilloni
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | | | - Marco Vinceti
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy; Department of Epidemiology, Boston University School of Public Health, Boston, MA, United States.
| |
Collapse
|
26
|
Laur N, Kinscherf R, Pomytkin K, Kaiser L, Knes O, Deigner HP. ICP-MS trace element analysis in serum and whole blood. PLoS One 2020; 15:e0233357. [PMID: 32433650 PMCID: PMC7239469 DOI: 10.1371/journal.pone.0233357] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 05/04/2020] [Indexed: 12/20/2022] Open
Abstract
Trace elements and minerals are compounds that are essential for the support of a variety of biological functions and play an important role in the formation of and the defense against oxidative stress. Here we describe a technique, allowing sequential detection of the trace elements (K, Zn, Se, Cu, Mn, Fe, Mg) in serum and whole blood by an ICP-MS method using single work-up, which is a simple, quick and robust method for the sequential measurement and quantification of the trace elements Sodium (Na), Potassium (K), Calcium (Ca), Zinc (Zn), Selenium (Se), Copper (Cu), Iron (Fe), Manganese (Mn) and Magnesium (Mg) in whole blood as well as Copper (Cu), Selenium (Se), Zinc (Zn), Iron (Fe), Magnesium (Mg), Manganese (Mn), Chromium (Cr), Nickel (Ni), Gold (Au) and Lithium (Li) in human serum. For analysis, only 100 μl of serum or whole blood is sufficient, which make this method suitable for detecting trace element deficiency or excess in newborns and infants. All samples were processed and analyzed by ICP-MS (Agilent Technologies). The accuracy, precision, linearity and the limit of quantification (LOQ), Limit of Blank (LOB) and the limit of detection (LOD) of the method were assessed. Recovery rates were between 80–130% for most of the analyzed elements; repeatabilities (Cv %) calculated were below 15% for most of the measured elements. The validity of the proposed methodology was assessed by analyzing a certified human serum and whole blood material with known concentrations for all elements; the method described is ready for routine use in biomonitoring studies.
Collapse
Affiliation(s)
- Nico Laur
- Furtwangen University, Institute of Precision Medicine, VS-Schwenningen, Germany
- Department of Anatomy and Cellbiology, University of Marburg, Marburg, Germany
- Swiss Analysis AG, Tägerwilen, Switzerland
| | - Ralf Kinscherf
- Department of Anatomy and Cellbiology, University of Marburg, Marburg, Germany
| | | | - Lars Kaiser
- Furtwangen University, Institute of Precision Medicine, VS-Schwenningen, Germany
- Institute of Pharmaceutical Sciences, University of Freiburg, Freiburg i. Br, Germany
| | - Otto Knes
- Swiss Analysis AG, Tägerwilen, Switzerland
| | - Hans-Peter Deigner
- Furtwangen University, Institute of Precision Medicine, VS-Schwenningen, Germany
- Fraunhofer Institute IZI, Leipzig, EXIM Department, Schillingallee, Rostock, Germany
- Tuebingen University, Faculty of Science, Tübingen, Germany
- * E-mail:
| |
Collapse
|
27
|
Loomba R, Filippini T, Chawla R, Chaudhary R, Cilloni S, Datt C, Singh S, Dhillon KS, Vinceti M. Exposure to a high selenium environment in Punjab, India: Effects on blood chemistry. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 716:135347. [PMID: 31843317 DOI: 10.1016/j.scitotenv.2019.135347] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/31/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Many studies have shown that overexposure to environmental selenium may exert a wide pattern of adverse effects on human health, but much uncertainty still surrounds some of them as well as the exact amounts of exposure involved. In particular, very few studies have addressed the possible changes in blood chemistry following high selenium exposure. In a Northeastern part of Punjab, India, very high soil selenium content has been documented, with a value exceeding 2 mg/kg (up to 5) as compared with the <0.5 mg/kg selenium content characterizing the surrounding referent areas. In seven villages located in that seleniferous areas, we carried out a survey by recruiting volunteers and sampling blood, hair and nail specimens. We administered a questionnaire to the participants and analyzed the specimens for the selenium, along with a series of biochemical and haematological parameters in blood. We included 680 adult volunteers (267 men and 413 women), who showed median selenium levels of 171.30 µg/L in serum, 1.25 µg/g in hair, and 5.7 µg/g in nails. Overall, increasing selenium exposure tended to correlate with higher levels of total cholesterol, albumin, free triiodothyronine, deionidase activity, and with red cell and platelet counts. After stratifying the subjects according to category of selenium exposure, we observed a dose-response relation between serum selenium and risk of high total cholesterol, and between hair selenium and risk of high total and low-density lipoprotein cholesterol, high pancreatic lipase, altered thyroid-stimulating hormone and free triiodothyronine levels. Nail selenium exposure category positively correlated with risk of high alanine-aminotransferase, altered albumin levels, high pancreatic lipase and low levels of thyroid-stimulating hormone. Chronic selenium overexposure appears to adversely affect lipid profiles and pancreatic, liver, and thyroid function, with selenium biomarkers having different abilities to predict such effects.
Collapse
Affiliation(s)
- Rinchu Loomba
- Christian Medical College & Hospital, Ludhiana, India
| | - Tommaso Filippini
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Rajinder Chawla
- Christian Medical College & Hospital, Ludhiana, India; Accuscript Consultancy, Ludhiana, India
| | | | - Silvia Cilloni
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy
| | - Chander Datt
- ICAR-National Dairy Research Institute, Karnal, India
| | | | | | - Marco Vinceti
- CREAGEN - Environmental, Genetic and Nutritional Epidemiology Research Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy; Department of Epidemiology, Boston University School of Public Health, Boston, MA, United States.
| |
Collapse
|
28
|
Hariharan S, Dharmaraj S. Selenium and selenoproteins: it's role in regulation of inflammation. Inflammopharmacology 2020; 28:667-695. [PMID: 32144521 PMCID: PMC7222958 DOI: 10.1007/s10787-020-00690-x] [Citation(s) in RCA: 256] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 02/06/2020] [Indexed: 12/22/2022]
Abstract
Abstract Selenium is an essential immunonutrient which holds the human’s metabolic activity with its chemical bonds. The organic forms of selenium naturally present in human body are selenocysteine and selenoproteins. These forms have a unique way of synthesis and translational coding. Selenoproteins act as antioxidant warriors for thyroid regulation, male-fertility enhancement, and anti-inflammatory actions. They also participate indirectly in the mechanism of wound healing as oxidative stress reducers. Glutathione peroxidase (GPX) is the major selenoprotein present in the human body, which assists in the control of excessive production of free radical at the site of inflammation. Other than GPX, other selenoproteins include selenoprotein-S that regulates the inflammatory cytokines and selenoprotein-P that serves as an inducer of homeostasis. Previously, reports were mainly focused on the cellular and molecular mechanism of wound healing with reference to various animal models and cell lines. In this review, the role of selenium and its possible routes in translational decoding of selenocysteine, synthesis of selenoproteins, systemic action of selenoproteins and their indirect assimilation in the process of wound healing are explained in detail. Some of the selenium containing compounds which can acts as cancer preventive and therapeutics are also discussed. These compounds directly or indirectly exhibit antioxidant properties which can sustain the intracellular redox status and these activities protect the healthy cells from reactive oxygen species induced oxidative damage. Although the review covers the importance of selenium/selenoproteins in wound healing process, still some unresolved mystery persists which may be resolved in near future. Graphic abstract ![]()
Collapse
Affiliation(s)
- Sneha Hariharan
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India
| | - Selvakumar Dharmaraj
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India.
| |
Collapse
|
29
|
Romanelli-Credrez L, Doitsidou M, Alkema MJ, Salinas G. HIF-1 Has a Central Role in Caenorhabditis elegans Organismal Response to Selenium. Front Genet 2020; 11:63. [PMID: 32161616 PMCID: PMC7052493 DOI: 10.3389/fgene.2020.00063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/17/2020] [Indexed: 11/13/2022] Open
Abstract
Selenium is a trace element for most organisms; its deficiency and excess are detrimental. Selenium beneficial effects are mainly due to the role of the 21st genetically encoded amino acid selenocysteine (Sec). Selenium also exerts Sec-independent beneficial effects. Its harmful effects are thought to be mainly due to non-specific incorporation in protein synthesis. Yet the selenium response in animals is poorly understood. In Caenorhabditis elegans, Sec is genetically incorporated into a single selenoprotein. Similar to mammals, a 20-fold excess of the optimal selenium requirement is harmful. Sodium selenite (Na2SeO3) excess causes development retardation, impaired growth, and neurodegeneration of motor neurons. To study the organismal response to selenium we performed a genetic screen for C. elegans mutants that are resistant to selenite. We isolated non-sense and missense egl-9/EGLN mutants that confer robust resistance to selenium. In contrast, hif-1/HIF null mutant was highly sensitive to selenium, establishing a role for this transcription factor in the selenium response. We showed that EGL-9 regulates HIF-1 activity through VHL-1, and identified CYSL-1 as a key sensor that transduces the selenium signal. Finally, we showed that the key enzymes involved in sulfide and sulfite stress (sulfide quinone oxidoreductase and sulfite oxidase) are not required for selenium resistance. In contrast, knockout strains in the persulfide dioxygenase ETHE-1 and the sulfurtransferase MPST-7 affect the organismal response to selenium. In sum, our results identified a transcriptional pathway as well as enzymes possibly involved in the organismal selenium response.
Collapse
Affiliation(s)
- Laura Romanelli-Credrez
- Laboratorio de Biología de Gusanos. Unidad Mixta, Departamento de Biociencias, Facultad de Química, Universidad de la República-Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Maria Doitsidou
- Centre for Discovery Brain Sciences (CDBS), University of Edinburgh, Edinburgh, United Kingdom
| | - Mark J Alkema
- Neurobiology Department, University of Massachusetts Medical School, Worcester, MA, United States
| | - Gustavo Salinas
- Laboratorio de Biología de Gusanos. Unidad Mixta, Departamento de Biociencias, Facultad de Química, Universidad de la República-Institut Pasteur de Montevideo, Montevideo, Uruguay
| |
Collapse
|
30
|
Abstract
Coal-fired power facilities generate a polymetallic effluent (Flue Gas Desulfurization—FGD) rich in sulfate. FGD effluents may be considered an important secondary resource. This paper investigates the recovery of sulfate as barite (BaSO4), a mineral with high commercial value and a critical raw material. Using equimolar BaCl2, >99% desulfurization of an FGD effluent produced by a coal-fired power plant operating in central Poland was achieved, yielding up to 16.5 kg high purity barite m−3. The recovered barite was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric (TGA), scanning electron microscopy analysis (SEM), surface properties (PZC), density, and chemical stability (TCLP), and was compared with a commercial reference material. Barite recovery also led to the reduction in concentration of Al (86%), Cu (52%), K (69%), Mo (62%), Se (40%), Sr (91%), and U (75%) initially present in the FGD effluent. TCLP results indicate the entrapment and the stabilization of ~70% Se and ~90% Al in the barite structure. Based on this dataset, an in-depth characterization of the recovered barite is presented, and the removal mechanism of the elements is discussed. The study also provides a preliminary cost benefit analysis of the process. To our best knowledge, this is the first work showing barite recovery and metal removal from FGD effluents using a one-step process.
Collapse
|
31
|
Sadat Najib F, Poordast T, Rezvan Nia M, Hossein Dabbaghmanesh M. Effects of selenium supplementation on glucose homeostasis in women with gestational diabetes mellitus: A randomized, controlled trial. Int J Reprod Biomed 2020; 18:57-64. [PMID: 32043072 PMCID: PMC6996124 DOI: 10.18502/ijrm.v18i1.6201] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 06/02/2019] [Accepted: 08/14/2019] [Indexed: 12/17/2022] Open
Abstract
Background There is limited evidence about the anti-diabetic effects of selenium supplementation in women with gestational diabetes mellitus (GDM). Objective This study investigates the effects of selenium supplementation on glucose homeostasis in women with GDM. Materials and Methods A total of 60 pregnant women with GDM were enrolled in this prospective randomized, double-blind, and placebo-controlled clinical trial. They were randomly assigned to take either 100µg selenium supplements as tablet or a placebo daily for 12 wk since 24-28 wk of gestation. The primary outcomes were changes in the glucose homeostasis, including fasting plasma glucose, the 2-hr post prandial blood glucose, serum insulin level, glycosylated hemoglobin (Hb A1C), and the homeostasis model assessment of insulin resistance(HOMA_IR) at the initial period and 3 months after intervention. Results The mean maternal age of the patients who took selenium supplements was 29.19 ± 6.16 (range 18-41) years. In the placebo group, the mean maternal age was 31 ± 4.43 (range 24-39) years. Compared with the placebo group, fasting plasma glucose, 2-hr post-prandial blood glucose, glycosylated hemoglobin(Hb A1C), serum insulin level, and homeostasis model of assessment-estimated insulin resistance(HOMA_IR) were not significantly changed in the selenium group at the end of study (p = 0.25, p = 0.87, p = 0.34, p = 0.57, and p = 0.31, respectively). Conclusion The results of this trial suggest that supplementation with 100µg of selenium does not modulate glucose homeostasis in women with GDM.
Collapse
Affiliation(s)
- Fatemeh Sadat Najib
- Infertility Research Centere of Obstetrics and Gynecology Ward, Shiraz Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Tahereh Poordast
- Infertility Research Centere of Obstetrics and Gynecology Ward, Shiraz Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mina Rezvan Nia
- Infertility Research Centere of Obstetrics and Gynecology Ward, Shiraz Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hossein Dabbaghmanesh
- Endocrin and Metabolic Research center of Internal Medicine Ward, Shiraz Medical School, Shiraz University of Medical Sciences, Shiraz, Iran
| |
Collapse
|
32
|
The Correlation between Dietary Selenium Intake and Type 2 Diabetes: A Cross-Sectional Population-Based Study on North Chinese Adults. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8058463. [PMID: 32076615 PMCID: PMC6996697 DOI: 10.1155/2020/8058463] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 11/02/2019] [Accepted: 11/19/2019] [Indexed: 12/18/2022]
Abstract
The relationship between selenium (Se) and type 2 diabetes (T2D) remains controversial. In previous animal and cell studies, Se was found to be insulin mimic and antidiabetic, whereas recent epidemiological and interventional trials have shown an unexpected association between high Se intake and increased risk of T2D. The present study aimed to investigate the significance of dietary Se and T2D in North Chinese adults. A large sample of the population was enrolled through cluster sampling in Northern China (N=8824). Information on basic characteristics, anthropometric measures, and dietary Se intake was collected from each subject for analysis. Multivariable logistic regression was used to investigate the association between dietary Se and T2D through adjusted odds ratio (OR) and the corresponding 95% confidence interval (CI). The average nutritional Se intake was 52.43 μg/day, and the prevalence of T2D was 20.4% in the studied population. The OR for developing T2D was 1.66 (95% CI: 1.38, 1.99; P for linear trend <0.005), comparing the highest to the lowest quintile of energy-adjusted Se intake in multivariate logistic regression analysis. The mediation analysis discovered that glucose metabolism (indicated by FBG and HbA1c) mediated this association. In conclusion, our research adds further support to the role of high dietary Se in the incidence of T2D. The results also suggested that this association was mediated by glucose metabolism.
Collapse
|
33
|
Lusa M, Help H, Honkanen AP, Knuutinen J, Parkkonen J, Kalasová D, Bomberg M. The reduction of selenium(IV) by boreal Pseudomonas sp. strain T5-6-I - Effects on selenium(IV) uptake in Brassica oleracea. ENVIRONMENTAL RESEARCH 2019; 177:108642. [PMID: 31430668 DOI: 10.1016/j.envres.2019.108642] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
Selenium (Se) is an essential micronutrient but toxic when taken in excessive amounts. Therefore, understanding the metabolic processes related to selenium uptake and bacteria-plant interactions coupled with selenium metabolism are of high importance. We cultivated Brassica oleracea with the previously isolated heterotrophic aerobic Se(IV)-reducing Pseudomonas sp. T5-6-I strain to better understand the phenomena of bacteria-mediated Se(IV) reduction on selenium availability to the plants. B. oleracea grown on Murashige and Skoog medium (MS-salt agar) with and without of Pseudomonas sp. were amended with Se(IV)/75Se(IV), and selenium transfer into plants was studied using autoradiography and gamma spectroscopy. XANES was in addition used to study the speciation of selenium in the B. oleracea plants. In addition, the effects of Se(IV) on the protein expression in B. oleracea was studied using HPLC-SEC. TEM and confocal microscopy were used to follow the bacterial/Se-aggregate accumulation in plants and the effects of bacterial inoculation on root-hair growth. In the tests using 75Se(IV) on average 130% more selenium was translocated to the B. oleracea plants grown with Pseudomonas sp. compared to the plants grown with selenium, but without Pseudomonas sp.. In addition, these bacteria notably increased root hair density. Changes in the protein expression of B. oleracea were observed on the ∼30-58 kDa regions in the Se(IV) treated samples, probably connected e.g. to the oxidative stress induced by Se(IV) or expression of proteins connected to the Se(IV) metabolism. Based on the XANES measurements, selenium appears to accumulate in B. oleracea mainly in organic C-Se-H and C-Se-C bonds with and without bacteria inoculation. We conclude that the Pseudomonas sp. T5-6-I strain seems to contribute positively to the selenium accumulation in plants, establishing the high potential of Se0-producing bacteria in the use of phytoremediation and biofortification of selenium.
Collapse
Affiliation(s)
- Merja Lusa
- Department of Chemistry, Radiochemistry, Faculty of Science, University of Helsinki, Finland.
| | - Hanna Help
- Department of Physics, X-Ray Laboratory, Faculty of Science, University of Helsinki, Finland
| | - Ari-Pekka Honkanen
- Department of Physics, X-Ray Laboratory, Faculty of Science, University of Helsinki, Finland
| | - Jenna Knuutinen
- Department of Chemistry, Radiochemistry, Faculty of Science, University of Helsinki, Finland
| | | | - Dominika Kalasová
- CEITEC - Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Malin Bomberg
- Material Recycling and Geotechnology, VTT, Technical Research Center of Finland, Espoo, Finland
| |
Collapse
|
34
|
Ulusoy Ş, Mol S, Karakulak FS, Kahraman AE. Selenium-Mercury Balance in Commercial Fish Species from the Turkish Waters. Biol Trace Elem Res 2019; 191:207-213. [PMID: 30552608 DOI: 10.1007/s12011-018-1609-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 12/06/2018] [Indexed: 12/18/2022]
Abstract
The interactions between selenium (Se) and mercury (Hg) were assessed in order to interpret public health risk, associated with dietary mercury exposure due to fish consumption. For this purpose, the mass and molar concentrations of Se and Hg were determined in the edible tissues of six species of fish, collected from the commercial fishing grounds of Turkey. The Se/Hg molar ratios and selenium health benefit values (Se-HBVs) were also calculated. The main fish species exported from Turkey to Europe were studied to determine the risks or benefits for human health. The mean Hg levels (μg g-1, wet weight) ranged from 0.01 (in turbot) to 0.45 (in Atlantic bluefin tuna). The average selenium concentrations were between 0.96 μg g-1 (in thornback ray) and 1.86 μg g-1 (in turbot). The molar ratios of Se/Hg were above 1 for all species and greater than 100 in turbot, red mullet, and whiting. Positive Se-HBVs were determined for all samples, showing health benefits. Since Se is present in molar excess of Hg in the fish muscles, organic Hg exposures from eating these fish is not a public health concern.
Collapse
Affiliation(s)
- Şafak Ulusoy
- Department of Seafood Processing and Quality Control, Faculty of Aquatic Sciences, Istanbul University, Ordu st. No: 8, 34134 Laleli-Fatih, Istanbul, Turkey.
| | - Sühendan Mol
- Department of Seafood Processing and Quality Control, Faculty of Aquatic Sciences, Istanbul University, Ordu st. No: 8, 34134 Laleli-Fatih, Istanbul, Turkey
| | - F Saadet Karakulak
- Department of Fisheries Technology, Faculty of Aquatic Sciences, Istanbul University, Ordu st. No: 8, 34134 Laleli-Fatih, Istanbul, Turkey
| | - Abdullah E Kahraman
- Department of Fisheries Technology, Faculty of Aquatic Sciences, Istanbul University, Ordu st. No: 8, 34134 Laleli-Fatih, Istanbul, Turkey
| |
Collapse
|
35
|
Heavy Metals in Biota in Delaware Bay, NJ: Developing a Food Web Approach to Contaminants. TOXICS 2019; 7:toxics7020034. [PMID: 31200491 PMCID: PMC6631324 DOI: 10.3390/toxics7020034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/07/2019] [Accepted: 06/10/2019] [Indexed: 11/16/2022]
Abstract
Understanding the relationship between heavy metal and selenium levels in biota and their foods is important, but often difficult to determine because animals eat a variety of organisms. Yet such information is critical to managing species populations, ecological integrity, and risk to receptors (including humans) from consumption of certain prey. We examine levels of cadmium, lead, mercury, and selenium in biota from Delaware Bay (New Jersey, USA) to begin construction of a “springtime” food web that focuses on shorebirds. Horseshoe crab (Limulus polyphemus) eggs are one of the key components at the base of the food web, and crab spawning in spring provides a food resource supporting a massive stopover of shorebirds. Fish and other biota also forage on the crab eggs, and a complex food web leads directly to top-level predators such as bluefish (Pomatomus saltatrix) and striped bass (Morone saxatilis), both of which are consumed by egrets, eagles, ospreys (Pandion haliaetus), and humans. Metal levels in tissues were generally similar in algae, invertebrates, and small fish, and these were similar to those in blood of shorebirds (but not feathers). There was a significant direct relationship between the levels of metals in eggs of horseshoe crabs and mean metal levels in the blood of four species of shorebirds. Metal levels in shorebird feathers were higher than those in blood (except for selenium), reflecting sequestration of metals in feathers during their formation. Levels in feathers of laughing gulls (Leucophaeus atricilla) were similar to those in feathers of shorebirds (except for selenium). Selenium bears special mention as levels were significantly higher in the blood of all shorebird species than in other species in the food web, and were similar to levels in their feathers. Levels of metals in bluefish and striped bass were similar or higher than those found in the blood of shorebirds (except for selenium). The mean levels of cadmium, lead, and mercury in the blood and feathers of shorebirds were below any effect levels, but selenium levels in the blood and feathers of shorebirds were higher than the sublethal effect levels for birds. This is a cause for concern, and warrants further examination.
Collapse
|
36
|
Abstract
PURPOSE OF REVIEW Selenium, a trace element, is ubiquitous in the environment. The main source of human exposure is diet. Despite its nutritional benefits, it is one of the most toxic naturally occurring elements. Selenium deficiency and overexposure have been associated with adverse health effects. Its level of toxicity may depend on its chemical form, as inorganic and organic species have distinct biological properties. RECENT FINDINGS Nonexperimental and experimental studies have generated insufficient evidence for a role of selenium deficiency in human disease, with the exception of Keshan disease, a cardiomyopathy. Conversely, recent randomized trials have indicated that selenium overexposure is positively associated with type 2 diabetes and high-grade prostate cancer. In addition, a natural experiment has suggested an association between overexposure to inorganic hexavalent selenium and two neurodegenerative diseases, amyotrophic lateral sclerosis and Parkinson's disease. Risk assessments should be revised to incorporate the results of studies demonstrating toxic effects of selenium. Additional observational studies and secondary analyses of completed randomized trials are needed to address the uncertainties regarding the health risks of selenium exposure.
Collapse
|
37
|
Burger J, Mizrahi D, Jeitner C, Tsipoura N, Mobley J, Gochfeld M. Metal and metalloid levels in blood of semipalmated sandpipers (Calidris pusilla) from Brazil, Suriname, and Delaware Bay: Sentinels of exposure to themselves, their prey, and predators that eat them. ENVIRONMENTAL RESEARCH 2019; 173:77-86. [PMID: 30901611 DOI: 10.1016/j.envres.2019.02.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
Identifying animals as sentinels for humans and other animal species is an excellent method for understanding exposure to environmental contamination at different times and places. Shorebirds are useful sentinels because they have a world-wide distribution, eat a range of prey, and are eaten by a range of other species, including humans. We collected blood from semipalmated sandpipers (Calidris pusilla) wintering in northern (Suriname N = 71) and northeastern (Brazil N = 61) South America to examine levels of heavy metals and metalloids (arsenic, selenium), and compare them to blood levels in sandpipers at a heavily used stopover site in New Jersey (N = 30; Delaware Bay, NJ). Since blood represents relatively recent exposure, it can provide information on where and when the birds were exposed. Levels were highest in Brazil for arsenic and particularly selenium; highest in Suriname for cadmium and lead; and highest in New Jersey for chromium. Samples from Brazil and Suriname presented higher levels of mercury than did those from New Jersey. There were no geographic differences for cobalt. Levels of all metals were generally within an order of magnitude. The significant geographic difference for selenium was interesting because it is regulated in the body. Selenium levels in the NJ sample were directly proportional to levels found in their principle food at this migration stopover site (eggs of horseshoe crab, Limulus polyphemus). Mean selenium level was almost an order of magnitude higher in the semipalmated sandpiper blood samples from Brazil (mean of 27,500 µg/L= ppb) compared to the other sampling locations (mean > 5330 µg/L). This is a toxic level and cause for concern and further investigation, alerting us to look for other evidence of excess selenium exposure. Otherwise the levels of other metals are generally not high enough to cause harm to the sandpipers themselves or to predators that eat them. We discuss the implications for these birds and their exposure to contaminants at different stopover sites.
Collapse
Affiliation(s)
- Joanna Burger
- Division of Life Sciences, Rutgers University, 604 Allison Road, Piscataway, NJ 08854-8082, USA; Environmental and Occupational Health Sciences Institute (EOHSI), Piscataway, NJ 08854, USA.
| | - David Mizrahi
- New Jersey Audubon, 11 Hardscrabble Rd, Bernardsville, NJ, USA.
| | - Christian Jeitner
- Division of Life Sciences, Rutgers University, 604 Allison Road, Piscataway, NJ 08854-8082, USA.
| | - Nellie Tsipoura
- New Jersey Audubon, 11 Hardscrabble Rd, Bernardsville, NJ, USA.
| | - Jason Mobley
- AQUASIS - Associação de Pesquisa e Preservação de Ecossistemas Aquáticos, Reserva Ecológica do SESC Iparana, Praia de Iparana, Caucaia, Ceará 61.627-210, Brazil.
| | - Michael Gochfeld
- Environmental and Occupational Health Sciences Institute (EOHSI), Piscataway, NJ 08854, USA; Environmental and Occupational Health, School of Public Health, Rutgers University, Piscataway, NJ 08854, USA.
| |
Collapse
|
38
|
Nutrients for Prevention of Macular Degeneration and Eye-Related Diseases. Antioxidants (Basel) 2019; 8:antiox8040085. [PMID: 30986936 PMCID: PMC6523787 DOI: 10.3390/antiox8040085] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 03/18/2019] [Accepted: 03/25/2019] [Indexed: 12/28/2022] Open
Abstract
The risk of macular degeneration can be reduced through the consumption of antioxidant-rich foods, supplements, and nutraceutical formulas. This review focuses on the antioxidants, vitamins, and minerals that have been reported for reducing the risk of macular degeneration and other eye-related diseases. Antioxidants including anthocyanins, carotenoids, flavonoids, and vitamins have been shown to reduce the risk of eye-related diseases. Anthocyanins extracted from berries are powerful antioxidants. Cyanidin, delphinidin, malvidin, pelargonidin, peonidin, and petunidin are anthocyanin aglycones detected in berries, currants, and other colored fruits and vegetables. β-Carotene, as well as xanthophyll lutein and zeaxanthin, have been reported to reduce the risk of macular degeneration. Flavonoids from plants help in the prevention of eye-related diseases through anti-inflammatory mechanisms. A combination of these antioxidants, vitamins, and minerals possess a synergistic effect on the prevention or risk reduction of macular degeneration. Formulas have been developed as dietary supplements to cater to the high demand from consumers and patients with eye problems. Many of the formulated dietary supplements that are sold in the market have been clinically proven for their efficacy to treat eye diseases. Although the bioactivities in the supplement capsules or tablets have been scientifically established for reducing risks of several diseases, which include macular degeneration and other eye-related diseases, knowledge on the right dosage, efficacy, and bioavailability of antioxidants, vitamins, and minerals is important for consumers. The information may help them make the best decision in choosing the right dietary supplements and nutraceuticals following the evidence-based recommended dosages and reference intakes for improving general health and preventing eye-related diseases. This review covers the potential causal factors involved in eye diseases, clinically proven treatments, and controversial findings on the antioxidants in the prevention of macular degeneration. Future studies should consider multiethnic and multicenter trials for eliminating potential bias in research.
Collapse
|
39
|
Integration of Nanomaterials and Bioluminescence Resonance Energy Transfer Techniques for Sensing Biomolecules. BIOSENSORS-BASEL 2019; 9:bios9010042. [PMID: 30884844 PMCID: PMC6468577 DOI: 10.3390/bios9010042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/09/2019] [Accepted: 03/12/2019] [Indexed: 01/11/2023]
Abstract
Bioluminescence resonance energy transfer (BRET) techniques offer a high degree of sensitivity, reliability and ease of use for their application to sensing biomolecules. BRET is a distance dependent, non-radiative energy transfer, which uses a bioluminescent protein to excite an acceptor through the resonance energy transfer. A BRET sensor can quickly detect the change of a target biomolecule quantitatively without an external electromagnetic field, e.g., UV light, which normally can damage tissue. Having been developed quite recently, this technique has evolved rapidly. Here, different bioluminescent proteins have been reviewed. In addition to a multitude of bioluminescent proteins, this manuscript focuses on the recent development of BRET sensors by utilizing quantum dots. The special size-dependent properties of quantum dots have made the BRET sensing technique attractive for the real-time monitoring of the changes of target molecules and bioimaging in vivo. This review offers a look into the basis of the technique, donor/acceptor pairs, experimental applications and prospects.
Collapse
|
40
|
Otim O, Juma T, Otunnu O. Assessing the health risks of consuming 'sachet' alcohol in Acoli, Uganda. PLoS One 2019; 14:e0212938. [PMID: 30811520 PMCID: PMC6392317 DOI: 10.1371/journal.pone.0212938] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/12/2019] [Indexed: 02/07/2023] Open
Abstract
The increased mortality rate among the Acoli people of northern Uganda is anecdotally blamed on excessive consumption of cheap and widely available sachet-packaged alcohol in the region. In this paper, we quantify this perceived association by determining statistically the health risks associated with ingesting 20 heavy metals in 17 popular spirits products consumed in Acoli. Thirteen of these products were industrially packaged in sachets (locally known as 'sachet,' waragi, arege or moo lyec) and four were locally produced Lira-Lira spirits from Bolo, Awere and Teso Bar in the region and Nsambya in southern Uganda. A Scottish whisky purchased in San Diego (USA) was our reference. Risk assessment was performed according to standardized protocols developed by the United States Environmental Protection Agency (US EPA). Our results show that a strong correlation indeed exists between health risks and ingestion of spirits in Acoli. At >2.5 sachets/day for 240 day/year over a lifetime for example, the risk of developing cancer due to exposure to As, Pb and Cr alone is 1 in 102,041. This estimate excludes ethanol, a known carcinogen, and 17 heavy metals also studied due to lack of their cancer slope factors. The primary non-cancer related health risk factor in all samples tested is ethanol with unacceptably high health index of four. The Lira-Lira spirits, with 100-6000% copper above the US EPA limit for intake by oral ingestion in water, would be the 'cleanest' without copper and at par with the Scottish whisky. Collectively, we find that no amount of alcohol consumed in Acoli is safe. Preventive measures are therefore recommended to reduce mortality in Acoli in particular, and in Uganda in general. These measures should include public education, better public policies, creating productive economic activities other than brewing alcohol, and social activities that engage people away from drinking.
Collapse
Affiliation(s)
- Ochan Otim
- Department of Humanities and Sciences, University of California-Los Angeles, Los Angeles, California, United States of America.,Environmental Monitoring Division, City of Los Angeles, Playa Del Rey, California, United States of America
| | - Tom Juma
- Environmental Monitoring Division, City of Los Angeles, Playa Del Rey, California, United States of America
| | - Olara Otunnu
- Former Under-Secretary-General of the United Nations, New York, New York, United States of America
| |
Collapse
|
41
|
Cox AG, Marshall SA, Palmer KR, Wallace EM. Current and emerging pharmacotherapy for emergency management of preeclampsia. Expert Opin Pharmacother 2019; 20:701-712. [PMID: 30707633 DOI: 10.1080/14656566.2019.1570134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Preeclampsia is a disease specific to pregnancy characterised by new onset hypertension with maternal organ dysfunction and/or fetal growth restriction. It remains a major cause of maternal and perinatal morbidity and mortality. For fifty years, antihypertensives have been the mainstay of treating preeclampsia, reducing maternal morbidity and mortality. With increased knowledge of the mechanisms underlying the disease has come opportunities for novel therapies that complement antihypertensives by protecting the maternal vasculature. Areas covered: In this review, the authors consider, in detail, the antihypertensives commonly used today in the emergency care of women with severe preeclampsia. They also review less common anti-hypertensive agents and discuss the role of magnesium sulphate in the management of preeclampsia and the prevention of eclampsia. Finally, they explore novel therapeutics for the acute management of preeclampsia. Expert opinion: The rapid control of maternal hypertension will, and must, remain the mainstay of emergency treatment for women with severe preeclampsia. The role of magnesium sulphate as a primary prevention for eclampsia is context dependant and should not displace a focus on correcting blood pressure safely. The exploration of novel adjuvant therapies will likely allow us to prolong pregnancy longer and improve perinatal outcomes safely for the mother.
Collapse
Affiliation(s)
- Annie G Cox
- a Ritchie Centre, Department of Obstetrics and GynaecologySchool of Clinical Sciences , Monash University , Clayton , Australia.,b The Ritchie Centre , Hudson Institute of Medical Research , Clayton , Australia
| | - Sarah A Marshall
- a Ritchie Centre, Department of Obstetrics and GynaecologySchool of Clinical Sciences , Monash University , Clayton , Australia.,b The Ritchie Centre , Hudson Institute of Medical Research , Clayton , Australia
| | - Kirsten R Palmer
- a Ritchie Centre, Department of Obstetrics and GynaecologySchool of Clinical Sciences , Monash University , Clayton , Australia
| | - Euan M Wallace
- a Ritchie Centre, Department of Obstetrics and GynaecologySchool of Clinical Sciences , Monash University , Clayton , Australia.,b The Ritchie Centre , Hudson Institute of Medical Research , Clayton , Australia
| |
Collapse
|
42
|
Tan HW, Mo HY, Lau ATY, Xu YM. Selenium Species: Current Status and Potentials in Cancer Prevention and Therapy. Int J Mol Sci 2018; 20:ijms20010075. [PMID: 30585189 PMCID: PMC6337524 DOI: 10.3390/ijms20010075] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/10/2018] [Accepted: 12/20/2018] [Indexed: 02/05/2023] Open
Abstract
Selenium (Se) acts as an essential trace element in the human body due to its unique biological functions, particularly in the oxidation-reduction system. Although several clinical trials indicated no significant benefit of Se in preventing cancer, researchers reported that some Se species exhibit superior anticancer properties. Therefore, a reassessment of the status of Se and Se compounds is necessary in order to provide clearer insights into the potentiality of Se in cancer prevention and therapy. In this review, we organize relevant forms of Se species based on the three main categories of Se-inorganic, organic, and Se-containing nanoparticles (SeNPs)-and overview their potential functions and applications in oncology. Here, we specifically focus on the SeNPs as they have tremendous potential in oncology and other fields. In general, to make better use of Se compounds in cancer prevention and therapy, extensive further study is still required to understand the underlying mechanisms of the Se compounds.
Collapse
Affiliation(s)
- Heng Wee Tan
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China.
| | - Hai-Ying Mo
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China.
| | - Andy T Y Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China.
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China.
| |
Collapse
|
43
|
|
44
|
Kumkrong P, LeBlanc KL, Mercier PHJ, Mester Z. Selenium analysis in waters. Part 1: Regulations and standard methods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 640-641:1611-1634. [PMID: 29960686 DOI: 10.1016/j.scitotenv.2018.05.392] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 05/26/2023]
Abstract
Selenium is released into the aquatic environment through anthropogenic activities such as agricultural irrigation, coal mining, and metallurgical activities, where it acts as a reproductive toxin with negative effects on predatory fish and water fowl. Waterborne selenium concentrations are closely regulated worldwide, and various standardized methods are implemented by regulatory bodies to allow for the monitoring of selenium concentrations in different types of waters. Here, we discuss worldwide regulations relating to concentration limits of selenium in drinking, natural, and industrial waters. Focusing specifically on North America, we look at some standardized analysis methods and discuss the fact that many of these methods are not adequately sensitive to measure selenium in the concentrations outlined by the associated regulations for natural waters. We look in detail at the limitations of these methods with regards to both detection limits and interfering sample matrix components and establish the need for more sensitive and robust methods of analysis for regulatory compliance. This review is complemented by a second part (LeBlanc et al., 2018) where we discuss the state of selenium speciation analysis and importance of speciation data for decision makers in industry and regulators.
Collapse
Affiliation(s)
- Paramee Kumkrong
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada.
| | - Kelly L LeBlanc
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
| | - Patrick H J Mercier
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
| | - Zoltán Mester
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario, Canada
| |
Collapse
|
45
|
Vinceti M, Vicentini M, Wise LA, Sacchettini C, Malagoli C, Ballotari P, Filippini T, Malavolti M, Rossi PG. Cancer incidence following long-term consumption of drinking water with high inorganic selenium content. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:390-396. [PMID: 29674262 DOI: 10.1016/j.scitotenv.2018.04.097] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
Selenium, a trace element to which humans are exposed mainly through diet, has been involved in the etiology of human cancer. We investigated the long-term effects of selenium exposure on cancer incidence using data from a natural experiment in Northern Italy. During the 1970s-1980s, in a part of the Italian municipality of Reggio Emilia, residents were inadvertently exposed to unusually high levels of inorganic hexavalent selenium (selenate) through drinking water. We followed the exposed residents for 28years, generating data on incidence (when available) and mortality rates for selected cancer sites; the remaining municipal residents comprised the unexposed (reference) group. We observed no substantial difference in overall cancer incidence comparing exposed and unexposed cohorts. We detected, however, a higher incidence of cancer at some sites, and for a few of them, namely cancers of the buccal cavity and pharynx, melanoma, urinary tract and lymphoid tissue, the excess incidence was particularly evident in the first period of follow-up but decreased over time. Overall, these results suggest that consumption of water with levels of selenium in its inorganic hexavalent form close to the European standard, 10μg/L, may have unfavourable effects on cancer incidence.
Collapse
Affiliation(s)
- Marco Vinceti
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy; Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, United States.
| | - Massimo Vicentini
- Epidemiology Unit, Local Health Authority, IRCCS, Viale Giovanni Amendola, 2, 42122 Reggio Emilia, Italy
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, United States
| | - Claudio Sacchettini
- Epidemiology Unit, Local Health Authority, IRCCS, Viale Giovanni Amendola, 2, 42122 Reggio Emilia, Italy
| | - Carlotta Malagoli
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Paola Ballotari
- Epidemiology Unit, Local Health Authority, IRCCS, Viale Giovanni Amendola, 2, 42122 Reggio Emilia, Italy
| | - Tommaso Filippini
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Marcella Malavolti
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Paolo Giorgi Rossi
- Epidemiology Unit, Local Health Authority, IRCCS, Viale Giovanni Amendola, 2, 42122 Reggio Emilia, Italy
| |
Collapse
|
46
|
Kaur R, Thakur S, Rastogi P, Kaushal N. Resolution of Cox mediated inflammation by Se supplementation in mouse experimental model of colitis. PLoS One 2018; 13:e0201356. [PMID: 30063735 PMCID: PMC6067745 DOI: 10.1371/journal.pone.0201356] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 07/13/2018] [Indexed: 12/21/2022] Open
Abstract
UC a form of IBD is a chronic inflammatory disorder of large intestine, with unknown etiology. Reports suggest a critical role of COX-2 dependent prostaglandins (PGs) mediated inflammatory pathway in pathophysiology of UC. However, COX inhibition using NSAIDs exacerbate IBD and thus is not a viable solution. Currently, in DSS induced experimental colitis in mice, we have demonstrated that dietary Se supplementation (0.5ppm as sodium selenite) symptomatically resolves the signs of inflammation in a redox sensitive manner as compared to Se deficient (0.01ppm) conditions, as seen by modulation in oxidative stress markers, morphological changes, histopathological examinations, biochemical studies such as MPO activity, activity of intestinal markers enzymes as well as mRNA and expressions of various pro and anti-inflammatory factors such as, mPGES, hPGDS, TXAS, 15-PGDH, GPX-1 and GPX-2. These findings were validated and correlated with changes in the biophysical parameters such as membrane fluidity, electrical parameters (impedance), transport across the colonic tissue and FTIR. Current study not only concluded that Se at supranutritional concentrations by modulating the redox status relieves the signs of colitis by regulating COX dependent PG biosynthetic pathway, but also sheds light on the biophysical characterization of these inflammatory/resolution pathways involved in UC.
Collapse
Affiliation(s)
- Ramanpreet Kaur
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
| | - Shivani Thakur
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
| | - Pulkit Rastogi
- Department of Hematology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Naveen Kaushal
- Department of Biophysics, BMS Block -II, Panjab University, South Campus, Chandigarh, India
- * E-mail:
| |
Collapse
|
47
|
Greiner A, Göen T, Hildebrand J, Feltes R, Drexler H. Low internal exposure and absence of adverse effects in workers exposed to high air levels of inorganic selenium. Toxicol Lett 2018; 298:141-149. [PMID: 29940301 DOI: 10.1016/j.toxlet.2018.06.1214] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 06/12/2018] [Accepted: 06/19/2018] [Indexed: 01/11/2023]
Abstract
Selenium is an essential trace element for humans, but adverse health effects may occur after elevated intake. The margin between it is small. This study aimed to assess external and internal exposure in workers of a selenium-processing plant, in which elemental and inorganic selenium occurred. Selenium was analyzed in the form of the selenium concentration in plasma (Se-P), in erythrocytes (Se-RBC) and in personal air samples (Setotal-Air) of 17 exposed workers. Internal exposure was compared to 20 controls without occupational selenium exposure. For potential effects, glucose, HbA1c, proinsulin, prothrombin time and GPX were determined. Setotal-Air had a maximum of 2394 μg/m3 (median 319 μg/m3), containing a small water-soluble fraction (median 12.7 μg/m3, range 0.07-975 μg/m3). Se-P of the exposed ranged from 62 to 123 μg/L (median 105 μg/L), whereas the median of Se-RBC was 63.4 μg/L blood (range 51.9-92.7 μg/L). Both were significantly higher than the controls. No significant difference was found for the effect parameters. Biological effect monitoring of employees occupationally exposed to very high levels of selenium and inorganic selenium compounds did not show any indication of adverse health effects. The moderate increase of the internal selenium exposure compared to the high ambient exposure to selenium and its compounds suggests an efficient air protection or an extremely low resorption of elemental and inorganic species of selenium via inhalation.
Collapse
Affiliation(s)
- Annette Greiner
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Thomas Göen
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany.
| | - Jörg Hildebrand
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Ruth Feltes
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Hans Drexler
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| |
Collapse
|
48
|
Jafari P, Thomas A, Haselbach D, Watfa W, Pantet O, Michetti M, Raffoul W, Applegate LA, Augsburger M, Berger MM. Trace element intakes should be revisited in burn nutrition protocols: A cohort study. Clin Nutr 2018; 37:958-964. [DOI: 10.1016/j.clnu.2017.03.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/12/2017] [Accepted: 03/27/2017] [Indexed: 12/13/2022]
|
49
|
Wang H, Ying J, Lai M, Qi X, Peng JB, Wu XF. Base-Promoted Carbonylative Cyclization of Propargylic Amines with Selenium under CO Gas-free Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800109] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Hai Wang
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Jun Ying
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Ming Lai
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Xinxin Qi
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Jin-Bao Peng
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry; Zhejiang Sci-Tech University; Xiasha Campus Hangzhou 310018 People's Republic of China
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock; Albert-Einstein-Straβe 29a 18059 Rostock Germany
| |
Collapse
|
50
|
Pantet O, Stoecklin P, Charrière M, Voirol P, Vernay A, Berger MM. Trace element repletion following severe burn injury: A dose-finding cohort study. Clin Nutr 2018; 38:246-251. [PMID: 29428787 DOI: 10.1016/j.clnu.2018.01.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 01/04/2018] [Accepted: 01/22/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND & AIMS Major burn patients are characterized by large exudative losses of Cu, Se and Zn. Trace element (TE) repletion has been shown to improve clinical outcome. Having increased the TE doses over time, the study aimed at analysing if our repletion protocol corrected TE plasma concentrations and if the necessity for continuous renal replacement therapy (CRRT) might increase the TE needs. METHODS Retrospective analysis of prospectively collected data in burn patients requiring intensive care (ICU) between 1999 and 2015. INCLUSION CRITERIA Admission on day 1, full treatment, burned surface area (TBSA) ≥20% and ≥1 TE plasma determination during the stay. Four groups were constituted according to protocol changes. Period 1 (P1): 1999-2000, P2: 2001-2005, P3: 2006-2010, P4: 2011-2015. Changes consisted in increasing TE repletion doses and duration. Demographic data, daily TE intakes and weekly plasma concentrations were retrieved for the first 21 ICU-days. Data as median (IQR). RESULTS 139 patients completed the criteria, aged 37 (28) years, burned on 35 (25) % TBSA. As a result of prescription, Cu, Se and Zn intakes increased significantly between P1 and P4, resulting in normalization of plasma Cu (16 μmol/l) since P3 and Zn (13.5 μmol/l) since P2. Median plasma Se were above reference range (1400 nmol/l) during P3 and P4. CRRT patients required higher doses of Cu for maintenance within normal ranges. CONCLUSION This dose finding study shows that the latest repletion protocol is safe and normalizes Cu and Zn concentrations. Se doses result in supra-normal Se concentrations, suggesting prescription reduction. CRRT patients are at high risk of Cu depletion and require specific monitoring.
Collapse
Affiliation(s)
- Olivier Pantet
- Service of Adult Intensive Care Medicine and Burns, University Hospital, Lausanne, Switzerland.
| | - Patricia Stoecklin
- Department of Intensive Care Medicine, Bern University Hospital, Switzerland
| | - Mélanie Charrière
- Service of Adult Intensive Care Medicine and Burns, University Hospital, Lausanne, Switzerland
| | - Pierre Voirol
- Service of Pharmacy, University Hospital, Lausanne, Switzerland
| | - Arnaud Vernay
- Department of Computer Sciences, University Hospital, Lausanne, Switzerland
| | - Mette M Berger
- Service of Adult Intensive Care Medicine and Burns, University Hospital, Lausanne, Switzerland
| |
Collapse
|