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Cruz KJC, de Oliveira ARS, Fontenelle LC, Morais JBS, de Sousa Melo SR, Dos Santos LR, de Sousa TGV, de Freitas ST, Henriques GS, Bordin S, Maia CSC, de Oliveira FE, Costa CHN, de Matos Neto EM, do Nascimento Marreiro D. Relationship Between Zinc, Selenium, and Magnesium Status and Markers of Metabolically Healthy and Unhealthy Obesity Phenotypes. Biol Trace Elem Res 2024; 202:3449-3464. [PMID: 37957519 DOI: 10.1007/s12011-023-03938-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023]
Abstract
Our objective was to investigate the relationship between zinc, selenium, and magnesium status and markers of metabolically healthy and unhealthy obesity phenotypes. This was a cross-sectional study with 140 women: metabolically healthy obese women (n = 35), metabolically unhealthy obese women (n = 28), and normal-weight women (n = 77). We have calculated the body mass index, waist-hip ratio, waist-height ratio and some adiposity indices. Additionally, we evaluated endocrine-metabolic parameters and estimated the dietary intake of energy, macronutrients, zinc, selenium, and magnesium. The mineral concentrations in plasma, erythrocytes, and urine were assessed. In obese patients, there was a significant decrease in dietary zinc, selenium, and magnesium intake per kilogram of body weight, as well as lower mineral concentrations in both plasma and erythrocytes. Additionally, these patients exhibited higher urinary mineral levels compared to the control group, regardless of whether they had healthy or unhealthy phenotypes. We observed a significant correlation between deficiencies in zinc, selenium, and magnesium and obesity-associated metabolic disorders, including dyslipidemias and redox status disturbances. This study highlights a connection between deficiencies in zinc, selenium, and magnesium and metabolic disorders linked to obesity, including dyslipidemias, alterations in redox status, and thyroid hormonal dysfunction.
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Affiliation(s)
- Kyria Jayanne Clímaco Cruz
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Ana Raquel Soares de Oliveira
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Larissa Cristina Fontenelle
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Jennifer Beatriz Silva Morais
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Stéfany Rodrigues de Sousa Melo
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Loanne Rocha Dos Santos
- Postgraduate Program in Food and Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | | | | | - Gilberto Simeone Henriques
- School of Nursing, Federal University of Minas Gerais, 6627 Pres. Antônio Carlos Ave. Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | | - Emídio Marques de Matos Neto
- Department of Physical Education, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
| | - Dilina do Nascimento Marreiro
- Department of Nutrition, Federal University of Piaui, Campus Minister Petrônio Portela, Ininga, Teresina, Piaui, Brazil
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Cardoso BEP, da Cunha Soares T, da Silva Dias TM, Fontenelle LC, Morais JBS, Cruz KJC, de Paiva Sousa M, de Sousa TGV, de Sousa Melo SR, Dos Santos LR, Henriques GS, Oliveira FE, do Nascimento Marreiro D. Selenium Biomarkers and Their Relationship to Cardiovascular Risk Parameters in Obese Women. Biol Trace Elem Res 2024; 202:866-877. [PMID: 37338800 DOI: 10.1007/s12011-023-03726-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/04/2023] [Indexed: 06/21/2023]
Abstract
A cross-sectional study was carried out with 210 women divided into a case group (obese, n = 84) and a control group (eutrophic, n = 126). Body weight, height, waist circumference (WC), and hip and neck circumference were measured and the waist-hip ratio and conicity index were calculated. Selenium in plasma, erythrocytes and urine, erythrocyte GPx activity, lipid profile, Castelli I and II indices, and systolic and diastolic blood (DBP) pressure were evaluated. Mean dietary selenium intake (µg/kg/day) and plasma and erythrocyte concentrations were lower in the obese group compared to the healthy group (p < 0.001). while urinary selenium concentrations were higher (p < 0.001). There was a statistical difference between groups regarding cardiovascular risk parameters: waist circumference, neck circumference, waist-hip ratio, conicity index, triacylglycerols (TGC), and lipoproteins rich in triacylglycerols (VLDL-c) (p > 0.05). There was a negative correlation between plasma selenium concentrations and total cholesterol (TC), non-high-density lipoprotein (non-HDL), low-density lipoprotein (LDL-c), and systolic blood pressure (SBP). Urinary selenium correlated negatively with waist circumference and hip circumference and positively with neck circumference, TC, TGC, high-density lipoprotein (HDL-c), non-HDL, and VLDL-c. There was a negative correlation between dietary selenium and waist circumference, waist-hip ratio, neck circumference, conicity index, non-HDL cholesterol, LDL-c, and Castelli indices I and II, as well as a positive correlation with HDL-c and diastolic blood pressure. Women with obesity present changes in their nutritional status related to selenium, as well as increased cardiovascular risk parameters. Thus, the positive role of selenium in protecting the risk of cardiovascular disease is likely.
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Fontenelle LC, de Paiva Sousa M, Dos Santos LR, Cardoso BEP, de Sousa TGV, da Cunha Soares T, de Sousa Melo SR, Morais JBS, da Silva Dias TM, de Oliveira FE, Braz DC, de Castro E Sousa JM, Torres-Leal FL, Henriques GS, do Nascimento Marreiro D. RELATIONSHIP BETWEEN SELENIUM NUTRITIONAL STATUS AND MARKERS OF LOW-GRADE CHRONIC INFLAMMATION IN OBESE WOMEN. Biol Trace Elem Res 2023; 201:663-676. [PMID: 35381948 DOI: 10.1007/s12011-022-03209-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/15/2022] [Indexed: 02/07/2023]
Abstract
Low-grade chronic inflammation is one of the main disorders that characterize adipose tissue dysfunction in obesity and is an important element in the pathogenesis of several comorbidities. In this context, selenium is an essential micronutrient that exerts important anti-inflammatory functions, and the role of selenium in controlling inflammation associated with obesity is not well defined. Thus, this study aimed to evaluate the relationship between markers of the nutritional status of selenium and low-grade chronic inflammation in obese women. This cross-sectional study included 81 women aged between 18 and 50 years, who were divided into two groups according to body mass index (BMI): the obesity group (n = 38) and normal weight group (n = 43). Selenium intake was assessed by 3-day diet records. The plasma, erythrocyte, and urinary selenium concentrations were determined using inductively coupled plasma optical emission spectrometry. The analysis of serum cytokines interleukin (IL)-8, IL-1β, IL-6, IL-10, and tumor necrosis factor alpha (TNFα) was performed using flow cytometry. The results of this study revealed that the obese women had higher dietary intake of selenium than eutrophic women. However, obese participants showed decreased selenium concentrations in plasma and erythrocytes, in parallel with increased concentrations of selenium in the urine. Regarding the inflammatory parameters, obese women exhibited higher concentrations of IL-6 and lower concentrations of the cytokines IL-8, IL-1β, and TNFα than eutrophic women. In the binary logistic regression analysis, erythrocyte selenium was considered an independent predictor of the serum concentrations of cytokine IL-8 in obese women, reflecting the anti-inflammatory action of this micronutrient.
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de Paiva Sousa M, Fontenelle LC, de Sousa TGV, Dos Santos LR, Cruz KJC, da Cunha Soares T, Braz DC, de Castro E Sousa JM, Henriques GS, Silva VC, Costa CHN, do Nascimento Marreiro D. Relationship Between Markers of Chronic Inflammation and Copper Nutritional Status in Obese Women. Biol Trace Elem Res 2022; 201:3133-3143. [PMID: 36100823 DOI: 10.1007/s12011-022-03407-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/28/2022] [Indexed: 11/02/2022]
Abstract
Adipose tissue dysfunction causes the development of metabolic complications, such as low-grade chronic inflammation, which may to alter copper homeostasis in obese individuals. Thus, the objective of this study is to analyze the relationship between markers of chronic inflammation and copper nutritional status in obese women. Cross-sectional study involved women aged 20-50 years, divided into two groups: case (BMI > 35 kg/m2) and control (18.5 > BMI > 24.9 kg/m2). Plasma and erythrocyte copper concentrations were determined by inductively coupled plasma optical emission spectrometry (ICP-OES) method. Activity of superoxide dismutase (SOD) enzyme in the erythrocytes was determined with an automatic biochemical analyzer. Serum concentrations of interleukin (IL)-6, IL-8, IL-12, IL-10, and IL-1β and tumor necrosis factor-alpha (TNF-α) were determined by using flow cytometer. Serum IL-6 concentrations were 105% higher in the case group compared to eutrophic women. Plasma copper concentrations were 20.5% higher, and erythrocyte copper concentrations were 23.5% lower in patients with obesity. In addition, erythrocyte SOD activity was 20% lower in obese participants when compared to eutrophic women. Our study identified significant negative correlation between the cytokines TNF-α and IL-10 and the SOD activity in the case group, suggesting a possible influence of chronic inflammation on copper distribution in obese individuals.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Vladimir Costa Silva
- Leishmaniasis Research Laboratory, Federal University of Piauí, Teresina, Piauí, Brazil
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Sobczyk MK, Gaunt TR. The Effect of Circulating Zinc, Selenium, Copper and Vitamin K 1 on COVID-19 Outcomes: A Mendelian Randomization Study. Nutrients 2022; 14:233. [PMID: 35057415 PMCID: PMC8780111 DOI: 10.3390/nu14020233] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 12/22/2022] Open
Abstract
Background & Aims: Previous results from observational, interventional studies and in vitro experiments suggest that certain micronutrients possess anti-viral and immunomodulatory activities. In particular, it has been hypothesized that zinc, selenium, copper and vitamin K1 have strong potential for prophylaxis and treatment of COVID-19. We aimed to test whether genetically predicted Zn, Se, Cu or vitamin K1 levels have a causal effect on COVID-19 related outcomes, including risk of infection, hospitalization and critical illness. Methods: We employed a two-sample Mendelian Randomization (MR) analysis. Our genetic variants derived from European-ancestry GWAS reflected circulating levels of Zn, Cu, Se in red blood cells as well as Se and vitamin K1 in serum/plasma. For the COVID-19 outcome GWAS, we used infection, hospitalization or critical illness. Our inverse-variance weighted (IVW) MR analysis was complemented by sensitivity analyses including a more liberal selection of variants at a genome-wide sub-significant threshold, MR-Egger and weighted median/mode tests. Results: Circulating micronutrient levels show limited evidence of association with COVID-19 infection, with the odds ratio [OR] ranging from 0.97 (95% CI: 0.87-1.08, p-value = 0.55) for zinc to 1.07 (95% CI: 1.00-1.14, p-value = 0.06)-i.e., no beneficial effect for copper was observed per 1 SD increase in exposure. Similarly minimal evidence was obtained for the hospitalization and critical illness outcomes with OR from 0.98 (95% CI: 0.87-1.09, p-value = 0.66) for vitamin K1 to 1.07 (95% CI: 0.88-1.29, p-value = 0.49) for copper, and from 0.93 (95% CI: 0.72-1.19, p-value = 0.55) for vitamin K1 to 1.21 (95% CI: 0.79-1.86, p-value = 0.39) for zinc, respectively. Conclusions: This study does not provide evidence that supplementation with zinc, selenium, copper or vitamin K1 can prevent SARS-CoV-2 infection, critical illness or hospitalization for COVID-19.
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Affiliation(s)
- Maria K. Sobczyk
- MRC Integrative Epidemiology Unit, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK;
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Kubala-Kukuś A, Banaś D, Braziewicz J, Stabrawa I, Góźdź S. Studies of Element Concentration in the Lymphocytes, Erythrocytes, and Plasma of Healthy Human Donors Using Total Reflection X-ray Fluorescence. APPLIED SPECTROSCOPY 2021; 75:802-817. [PMID: 33507090 DOI: 10.1177/0003702821993496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this article, the total reflection X-ray fluorescence (TXRF) analysis was used for determination of element concentrations in three isolated peripheral blood components: lymphocytes, erythrocytes, and plasma, collected from 36 healthy donors (15 men and 21 women) from eastern Poland. The studied blood components were isolated from whole peripheral blood using Histopaque-1077 density gradient centrifugation. In the lymphocytes, the following elements were measured: P, S, Cl, K, Ca, Fe, Zn, Br, Sr, and Pb. In the erythrocytes: P, S, Cl, K, Cr, Mn, Fe, Cu, Zn, Se, Br, Rb, and Pb, while in the plasma samples: P, S, Cl, K, Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Br, Se, Sr, and Pb. The descriptive statistics parameters of concentration such as: mean value, standard deviation, median, first and third quartiles, 10th and 90th percentiles were calculated for all samples of the studied blood components, as well as separately for male and female groups. The measured element concentrations and calculated parameters can be used as the reference values. Element concentration distributions for male and female groups were statistically compared using the non-parametric Mann-Whitney test and statistical significance differences (α = 0.05) were found for: P (in lymphocytes), Se and Rb (in erythrocytes), and V (in plasma). The multigroup statistical comparison of element concentration distribution for different blood components was also done (Mann-Whitney and Kruskal-Wallis tests). The statistical tests show that the concentration levels are usually different, except in the following cases: Zn, Fe (lymphocytes and plasma, Fe only for female group), Cr (erythrocytes and plasma). The obtained concentration ranges were compared with literature-based data available for element concentration in lymphocytes, erythrocytes, and plasma. In this work, the application of the TXRF method allowed additionally for the simultaneous determination of the concentrations of such elements as: P, S, Cl, Br, Sr and Pb in lymphocytes, S, Cl and Br in erythrocytes, and P, S, Cl, K, Ti, Br and Pb in plasma. From an analytical point of view, the article describes in detail the measurement procedure including the isolation of blood components and samples preparation for TXRF measurements, and later the detection limit of the method is discussed.
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Affiliation(s)
- Aldona Kubala-Kukuś
- Institute of Physics, Jan Kochanowski University, Kielce, Poland
- Holy Cross Cancer Center, Kielce, Poland
| | - Dariusz Banaś
- Institute of Physics, Jan Kochanowski University, Kielce, Poland
- Holy Cross Cancer Center, Kielce, Poland
| | - Janusz Braziewicz
- Institute of Physics, Jan Kochanowski University, Kielce, Poland
- Holy Cross Cancer Center, Kielce, Poland
| | - Ilona Stabrawa
- Institute of Physics, Jan Kochanowski University, Kielce, Poland
- Holy Cross Cancer Center, Kielce, Poland
| | - Stanisław Góźdź
- Holy Cross Cancer Center, Kielce, Poland
- Institute of Health Sciences, Jan Kochanowski University, Kielce, Poland
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Toro-Román V, Siquier-Coll J, Bartolomé I, Grijota FJ, Muñoz D, Maynar-Mariño M. Copper concentration in erythrocytes, platelets, plasma, serum and urine: influence of physical training. J Int Soc Sports Nutr 2021; 18:28. [PMID: 33827615 PMCID: PMC8025359 DOI: 10.1186/s12970-021-00426-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background Physical training produces changes in the extracellular and intracellular concentrations of trace minerals elements. To our knowledge, only three compartments have been studied simultaneously. The aim of the present study was to analyze the influence of physical training on extracellular (serum, plasma and urine) and intracellular (erythrocytes and platelets) concentrations of Copper (Cu). Methods Forty young men participated in this study. The participants were divided into a training group (TG; n = 20; 18.15 ± 0.27 years; 68.59 ± 4.18 kg; 1.76 ± 0.04 m) and a control group (CG; n = 20; 19.25 ± 0.39 years; 73.45 ± 9.04 kg; 1.79 ± 0.06 m). The TG was formed by semi-professional soccer players from a youth category with a regular training plan of 10 h/week. All of them had been participating in high level competitions and had trained for at least 5 years. Plasma, serum, urine, erythrocyte and platelet samples of Cu were obtained and analyzed by inductively coupled plasma mass spectrometry (ICP-MS). Results The TG showed lower concentrations of Cu in erythrocytes (p < 0.05) despite similar intakes. There were no significant differences in Cu concentrations in plasma, serum, urine and platelets although the trend was similar to that observed in erythrocytes. Conclusions The assessment of trace element concentrations should be carried out in both extracellular and intracellular compartments to obtain a proper evaluation and to identify possible deficiencies of the element. We believe that additional Cu supplementation is needed in athletes who perform physical training regularly.
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Affiliation(s)
- Víctor Toro-Román
- School of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - Jesús Siquier-Coll
- Movement, Brain and Health Research Group (MOBhE), Center of Higher Education Alberta Gim´enez (Comillas Pontifical University), Palma de Mallorca, Balearic Islands, Spain
| | - Ignacio Bartolomé
- School of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
| | - Francisco J Grijota
- Faculty of Language and Education, School of Sport Sciences, University of Nebrija, Campus La Berzosa, Calle del Hostal, 28248, Hoyo de Manzanares, Madrid, Spain
| | - Diego Muñoz
- School of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain.
| | - Marcos Maynar-Mariño
- School of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003, Cáceres, Spain
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Tanvir EM, Whitfield KM, Ng JC, Shaw PN. Development and Validation of an ICP-MS Method and Its Application to Determine Multiple Trace Elements in Small Volumes of Whole Blood and Plasma. J Anal Toxicol 2021; 44:1036-1046. [PMID: 32232355 DOI: 10.1093/jat/bkaa033] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/11/2020] [Accepted: 03/18/2020] [Indexed: 11/14/2022] Open
Abstract
Essential and nonessential element concentrations in human blood provide important information on the nutritional status of individuals and can assist in the screening or diagnosis of certain disorders and their association with other causative factors. A simple and sensitive method, suitable for use with small sample volumes, for quantification of multiple trace element concentrations in whole blood and plasma has been developed using inductively coupled plasma-mass spectrometry. Method validation was performed using standard reference materials of whole blood and serum using varying sample treatments with nitric acid, water and hydrogen peroxide. The method was applied to quantify the trace element concentrations in whole blood and plasma samples (0.1 mL) from 50 adult blood donors in Queensland. The whole blood sample (5 mL) was collected in Vacutainer tubes with K2EDTA as anticoagulant. The developed method was able to quantify, in blood and plasma samples over a wide range of concentrations, several essential elements: cobalt, copper, zinc, iron, manganese and selenium; the nutritionally probably essential elements vanadium and strontium; and nonessential elements including lead, cadmium, arsenic, caesium, barium, thallium and uranium. Significant differences (P < 0.0001) were observed between whole blood and plasma concentrations for 13 elements; 5 of the measured elements, cobalt (0.49 vs. 0.36 μg/L), copper (1.0 vs. 0.75 mg/L), strontium (28 vs. 16 μg/L), barium (1.5 vs. 0.64 μg/L) and thallium (0.06 vs. 0.03 μg/L), had higher mean concentrations in plasma than in blood. Whole blood concentrations of nine trace elements were significantly correlated (P < 0.0001) with plasma concentrations. The distribution of the trace elements between human blood and plasma varied considerably for the different elements. These results indicate that, using a small sample volume, this assay is suitable for the evaluation of nutritional status as well as in monitoring human toxic elemental exposures.
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Affiliation(s)
- E M Tanvir
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Karen M Whitfield
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia.,Pharmacy Department, Royal Brisbane and Women's Hospital, Metro North Health Services District, Herston, Queensland 4029, Australia
| | - Jack C Ng
- Queensland Alliance for Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Brisbane, Queensland 4102, Australia
| | - P Nicholas Shaw
- School of Pharmacy, The University of Queensland, Brisbane, Queensland 4072, Australia
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Fontenelle LC, Feitosa MM, Freitas TEC, Severo JS, Morais JBS, Henriques GS, Oliveira FE, Moita Neto JM, Marreiro DDN. Selenium status and its relationship with thyroid hormones in obese women. Clin Nutr ESPEN 2020; 41:398-404. [PMID: 33487296 DOI: 10.1016/j.clnesp.2020.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/17/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Studies have been conducted with the purpose of elucidating thyroid gland dysfunction in obesity, however the contributing factors for such dysfunction are not yet fully understood. Selenium is notable for its role in thyrocyte protection against oxidative damage and control of thyroid hormone synthesis. In addition, subjects with obesity may exhibit alterations in the selenium homeostasis. Therefore, the present study aimed to examine the selenium status and its relationship with serum thyroid hormone levels in obese women. METHODS This cross-sectional study included 69 euthyroid women, aged between 18 and 50 years, who were divided in two groups: an obese group (n = 35) and a control group with women of normal weight (n = 34). Selenium intake was assessed by three-day diet records and analyzed using NutWin software version 1.5. Plasma, erythrocyte, and urinary selenium levels were determined using inductively coupled plasma optical emission spectrometry. Testing for thyroid hormones and thyroid autoantibodies was performed based on chemiluminescence. RESULTS The median dietary selenium content was adequate according to the recommendations, with no statistical difference between groups. Obese women had reduced plasma and erythrocyte selenium levels compared to the control group, although selenium concentration in erythrocytes was adequate within the normal range for both groups. There was no significant difference between the urinary selenium concentrations in the subjects; however, the mineral clearance was higher in the obese group. Free triiodothyronine (fT3) and free thyroxine (fT4) levels were higher in obese women with class II obesity when compared to the control group. There was a negative correlation between plasma selenium and serum fT4 levels. CONCLUSIONS Obese women showed impairment in selenium homeostasis, however, this fact did not seem to adversely affect thyroid metabolism.
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Affiliation(s)
- Larissa Cristina Fontenelle
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
| | - Mayara Monte Feitosa
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
| | | | - Juliana Soares Severo
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
| | - Jennifer Beatriz Silva Morais
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
| | - Gilberto Simeone Henriques
- School of Nursing, Department of Nutrition, Federal University of Minas Gerais, 6627 Av. Pres. Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
| | - Francisco Erasmo Oliveira
- Med Imagem Clinical Laboratory, Rua Paissandu 1862, Centro Sul, CEP, Teresina, Piauí, 64001-120, Brazil.
| | - José Machado Moita Neto
- Department of Chemistry, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
| | - Dilina do Nascimento Marreiro
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portella, Teresina, Piauí, 64049-550, Brazil.
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Barros SÉDL, Dias TMDS, Moura MSBD, Soares NRM, Pierote NRA, Araújo CODD, Maia CSC, Henriques GS, Barros VC, Moita Neto JM, Parente JML, Marreiro DDN, Nogueira NDN. Relationship between selenium status and biomarkers of oxidative stress in Crohn's disease. Nutrition 2020; 74:110762. [PMID: 32244179 DOI: 10.1016/j.nut.2020.110762] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 08/21/2019] [Accepted: 02/03/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Crohn disease (CD) is characterized by chronic intestinal inflammation and various factors involved in its pathogenesis including oxidative stress. The oxidative stress in CD may compromise antioxidant nutrients, such as selenium. The aim of this study was to assess the status of selenium and its relationship with markers of oxidative stress in patients with CD in comparison to controls. METHODS The study included 47 patients with CD (20 with active disease and 27 in remission) and 25 healthy individuals. Blood samples were collected for the analysis of plasma and erythrocyte selenium concentrations using inductively coupled plasma optical emission spectrometry (ICP-OES). Selenoprotein P (SepP) was evaluated by sandwich enzyme-linked immunosorbent assay, erythrocyte glutathione peroxidase (GPx1) activity was assessed by using an automatic biochemistry analyzer, and the concentration of thiobarbituric acid reactive substances (TBARS) was measured. Comparative analyses were performed using one-way analysis of variance and Tukey's post hoc test. For correlations, Pearson's coefficient test was used. The determinants for CD and lipid peroxidation were indicated by odds ratio. RESULTS Plasma and erythrocyte selenium levels and SepP concentrations were lower in the CD patient groups than in the healthy group. GPx1 activity and the concentration of TBARS were significantly higher in the CD groups. In the univariate analysis, plasma and erythrocyte selenium and TBARS were associated with CD. CONCLUSION Patients with CD have impaired selenium status, which is related to the increased oxidative stress observed in these patients.
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Affiliation(s)
- Susy Érika de Lima Barros
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - Thaline Milany da Silva Dias
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | | | - Nina Rosa Mello Soares
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - Nayane Regina Araújo Pierote
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | | | - Carla Soraya Costa Maia
- Department of Nutrition, State University of Ceará, Campus do Itaperi, Fortaleza, Ceará, Brazil
| | - Gilberto Simeone Henriques
- School of Nursing, Department of Nutrition, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Veruska Cavalcanti Barros
- Department of Parasitology and Microbiology, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - José Machado Moita Neto
- Department of Chemistry, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - José Miguel Luz Parente
- Hospital of the Federal University of Piauí, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - Dilina do Nascimento Marreiro
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil
| | - Nadir do Nascimento Nogueira
- Department of Nutrition, Federal University of Piauí, Campus Ministro Petrônio Portela, Ininga, Teresina, Piauí, Brazil.
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Pechová A, Husáková T, Pavlata L, Holasová M, Hauptmanová K. Assessment of the Zinc and Copper Status in Alpaca. Biol Trace Elem Res 2018; 181:242-250. [PMID: 28508190 DOI: 10.1007/s12011-017-1043-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/30/2017] [Indexed: 11/25/2022]
Abstract
This study was performed with the aim of investigating the concentration of zinc and copper in the blood of healthy alpacas (Vicugna pacos) kept in central Europe and to compare the concentration of Zn and Cu in plasma and in whole blood. A further objective was to evaluate blood Zn and Cu in relation to different micromineral supplementation, age and sex groups of alpacas. A total of 299 alpacas (224 adults and 75 crias) from 18 farms were included in this study. The concentrations of copper and zinc in plasma/whole blood were measured by flame atomic absorption spectrometry. The results of this study show high individual variability in plasma Zn (median 3.54, range 1.56-8.01 μmol/l), whole blood Zn (median 10.01, range 6.23-75.0 μmol/l), plasma Cu (median 7.53, range 2.93-16.41 μmol/l) and whole blood Cu (median 6.33, range 3.02-13.95 μmol/l). Plasma Zn was not significantly influenced by sex, age or feeding group. Whole blood Zn was only significantly higher in females than in males. The intake of Zn in all groups was equal to or higher than the nutritional recommendation. During excessive supplementation, Zn absorption decreased and thus blood Zn did not reflect the higher intake. Only a weak correlation was found (Spearman correlation coefficient r = 0.384; p > 0.01; n = 204) between plasma and whole blood Zn concentrations. Plasma copper concentration was significantly influenced by age, sex and feeding; whole blood Cu by age and feeding. However, neither plasma Cu nor whole blood Cu reflected the intake of the element. We found a close correlation between plasma and blood copper concentrations (Spearman correlation coefficient r = 0.9043; p ≤ 0.01; n = 99). According to our results, copper in plasma or blood is not a good indicator of copper intake.
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Affiliation(s)
- A Pechová
- Department of Animal Protection, Welfare and Behaviour, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42, Brno, Czech Republic.
| | - T Husáková
- Private Veterinary Surgeon, Lhoty u Potštejna, Czech Republic
| | - L Pavlata
- Department of Animal Nutrition and Forage Production, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - M Holasová
- Department of Animal Protection, Welfare and Behaviour, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42, Brno, Czech Republic
| | - K Hauptmanová
- Ruminant and Swine Clinic, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho tr. 1946/1, 612 42, Brno, Czech Republic
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Rodrigues GP, Cozzolino SMF, Marreiro DDN, Caldas DRC, da Silva KG, de Sousa Almondes KG, Neto JMM, Pimentel JAC, de Carvalho CMRG, Nogueira NDN. Mineral status and superoxide dismutase enzyme activity in Alzheimer's disease. J Trace Elem Med Biol 2017; 44:83-87. [PMID: 28965606 DOI: 10.1016/j.jtemb.2017.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/22/2017] [Accepted: 06/15/2017] [Indexed: 12/13/2022]
Abstract
The study evaluated the dietary intake of zinc and copper, as measured by plasma and erythrocyte concentrations, the Cu/Zn ratio and measure the erythrocyte superoxide dismutase enzyme (eSOD) activity and the relationship between these markers and the degree of dementia in elderly individuals with and without Alzheimer's Disease (AD). A total of 93 elderly people aged 60-94 years were divided into two groups: with AD (n=44) and without AD (n=49). The NINCDS-ADRDA criteria were used for diagnosing AD, and dementia staging was determined using the Clinical Dementia Rating (CDR) scale. The dietary intake of Zn and Cu was obtained from a standard 3-day food record. Plasma and erythrocyte concentrations of the minerals were determined by flame atomic absorption spectrophotometry and by measuring eSOD activity in an automatic biochemical analyzer. The results showed dietary intake of Zn and Cu above the reference values with no differences observed between the two groups (p>0.05). Plasma and erythrocyte normocupremia as well as alteration in the Zn pool, with its reduced plasma concentrations and high in the erythrocytes, were observed in both groups (p>0.05). The plasma Cu/Zn ratio were not significantly different in patients with and without AD (p>0.05). The eSOD activity was high in both patient groups (p>0.05). However, among elderly patients with AD there was a positive correlation between this marker and dementia severity. According to our study results, we conclude that plasma and erythrocyte concentrations of Cu and Zn, as well as Cu/Zn ratio among elderly individuals is not related to Alzheimer's Disease. However, antioxidant activity of eSOD is associated with dementia severity.
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Affiliation(s)
- Gilmara Péres Rodrigues
- Department of Nutrition, Federal University of Piauí, Campus Minister Petrônio Portela, Health Science Center, SG-13, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
| | - Silvia Maria Franciscato Cozzolino
- Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580 - Bloco 14, Bairro: Butantã, CEP: 05508900, São Paulo, SP, Brazil.
| | - Dilina do Nascimento Marreiro
- Department of Nutrition, Federal University of Piauí, Campus Minister Petrônio Portela, Health Science Center, SG-13, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
| | - Daniele Rodrigues Carvalho Caldas
- Federal University of Piauí, Campus Ministro Petrônio Portela, Health Science Center, Postgraduate Program in Food and Nutrition, SG-13, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
| | - Kelcylene Gomes da Silva
- School of Pharmaceutical Sciences, University of São Paulo, Av. Lineu Prestes 580, Bloco 14 - Conjunto das Químicas - Cidade Universitária, CEP: 05508-900, São Paulo, SP, Brazil.
| | - Kaluce Gonçalves de Sousa Almondes
- School of Pharmaceutical Sciences, University of São Paulo, Av. Lineu Prestes 580, Bloco 14 - Conjunto das Químicas - Cidade Universitária, CEP: 05508-900, São Paulo, SP, Brazil.
| | - José Machado Moita Neto
- Department of Chemistry, Federal University of Piauí, Campus Ministro Petrônio Portela, Center for the Natural Sciences, SG-02, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
| | - José Alexandre Coelho Pimentel
- School of Pharmaceutical Sciences, University of São Paulo, Av. Lineu Prestes 580, Bloco 14 - Conjunto das Químicas - Cidade Universitária, CEP: 05508-900, São Paulo, SP, Brazil.
| | - Cecília Maria Resende Gonçalves de Carvalho
- Department of Nutrition, Federal University of Piauí, Campus Minister Petrônio Portela, Health Science Center, SG-13, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
| | - Nadir do Nascimento Nogueira
- Department of Nutrition, Federal University of Piauí, Campus Minister Petrônio Portela, Health Science Center, SG-13, Bairro: Ininga, CEP: 64.049-550, Teresina, PI, Brazil.
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13
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The Influence of Cigarette Smoke Exposure on the Copper Concentration in the Serum Depending on the Use of Menopausal Hormone Therapy. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5732380. [PMID: 28884126 PMCID: PMC5573097 DOI: 10.1155/2017/5732380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/26/2017] [Accepted: 07/12/2017] [Indexed: 01/17/2023]
Abstract
This study evaluated the effect of menopausal hormone therapy (MHT) on serum concentration of copper in postmenopausal women depending on passive or active exposure to tobacco smoke or lack thereof. The study included healthy postmenopausal women aged 42–69 years, who used (n = 76) or did not use (n = 76) MHT. Salivary cotinine and serum copper concentrations were determined in all the study subjects. Salivary cotinine exceeded 14 ng/ml in 14 women from the MHT group (18.5%) and in 16 controls (21.1%). Up to 41 (27%) study subjects had serum copper above the upper normal limit (1.17 mg/l). No correlation was found between salivary cotinine and serum copper in women with cotinine concentrations <14 ng/ml, and these two parameters correlated weakly in subjects with cotinine >14 ng/ml. Salivary concentration of cotinine increased with serum copper level in the MHT group, but not in the controls; smokers using MHT presented with significantly higher serum copper than nonsmokers. These findings imply that MHT does not affect serum concentration of copper in women who are not exposed to tobacco smoke. However, MHT seems to contribute to unfavorable increase in serum copper in passive and active smokers.
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Ozturk Z, Genc GE, Gumuslu S. Minerals in thalassaemia major patients: An overview. J Trace Elem Med Biol 2017; 41:1-9. [PMID: 28347454 DOI: 10.1016/j.jtemb.2017.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 12/19/2016] [Accepted: 01/09/2017] [Indexed: 01/19/2023]
Abstract
Thalassaemia major (TM) is a hereditary blood disease characterised by reduced or absent production of beta globin chains. Erythrocyte transfusions are given to raise the haemoglobin level in patients with thalassaemia major. However, transfusions have been related to increased risk of iron overload and tissue damage related to excess iron. Both elevated oxidative stress due to iron overload and increased hemolysis lead to over utilisation of minerals required for antioxidant enzymes activities. Iron chelators have been used to prevent iron overload in thalassaemia major patients, but these chelators have the possibility of removing minerals from the body. Thalassaemia patients are more at risk for mineral deficiency because of increased oxidative stress and iron chelation therapies. Growth and maturational delay, cardiomyopathy, endocrinopathies and osteoporosis are the complications of thalassaemia. Minerals may play a particular role to prevent these complications. In the current review, we provide an overview of minerals including zinc (Zn), copper (Cu), selenium (Se), magnesium (Mg) and calcium (Ca) in thalassaemia major patients. We, also, underline that some complications of thalassaemia can be caused by an increased need for minerals or lack of the minerals.
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Affiliation(s)
- Zeynep Ozturk
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, 07070, Turkey.
| | - Gizem Esra Genc
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, 07070, Turkey.
| | - Saadet Gumuslu
- Department of Medical Biochemistry, Faculty of Medicine, Akdeniz University, Antalya, 07070, Turkey.
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Rahman SM, Kippler M, Ahmed S, Palm B, El Arifeen S, Vahter M. Manganese exposure through drinking water during pregnancy and size at birth: A prospective cohort study. Reprod Toxicol 2015; 53:68-74. [DOI: 10.1016/j.reprotox.2015.03.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 02/06/2015] [Accepted: 03/20/2015] [Indexed: 12/18/2022]
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16
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Błażewicz A, Klatka M, Astel A, Partyka M, Kocjan R. Differences in trace metal concentrations (Co, Cu, Fe, Mn, Zn, Cd, And Ni) in whole blood, plasma, and urine of obese and nonobese children. Biol Trace Elem Res 2013; 155:190-200. [PMID: 23975578 PMCID: PMC3785704 DOI: 10.1007/s12011-013-9783-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 08/06/2013] [Indexed: 01/05/2023]
Abstract
High-performance ion chromatography and inductively coupled plasma-mass spectrometry methods have been applied to estimate the content of Cd, Co, Cu, Fe, Mn, Zn, and Ni in whole blood, plasma, and urine of obese and nonobese children. The study was conducted on a group of 81 Polish children of age 6-17 years (37 males, 44 females). Obese children were defined as those with body mass index (BMI) >95th percentile in each age-gender-specific group. Statistical testing was done by the use of nonparametric tests (Kruskal-Wallis's and Mann-Whitney's U) and Spearman's correlation coefficient. Significant correlations appeared for control group in plasma (Mn-Cd, Ni-Co), urine (Cu-Co), and blood (Fe-Cu), while for obese patients in plasma (Cd-Mn, Ni-Cu, Ni-Zn) and urine (Fe-Cd, Co-Mn). Sex criteria did not influence correlations between metals' content in plasma and urine of obese patients. Metals' abundance was correlated in non-corresponding combinations of body fluids. Rare significant differences between content of metals according to sex and the type of body fluids were discovered: Zn in plasma from obese patients of both sexes, and Zn, Co, and Mn in blood, Mn in plasma from healthy subjects. Negative correlations between BMI and Zn in blood, Cu in plasma, and Fe in urine were discovered for girls (control group). Positive correlation between Co content in plasma and BMI was discovered for obese boys. The changes in metals' content in body fluids may be indicators of obesity. Content of zinc, copper, and cobalt should be monitored in children with elevated BMI to avoid deficiency problems.
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Affiliation(s)
- Anna Błażewicz
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4A, 20-093, Lublin, Poland,
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Su M, Zhang T, Zhao T, Li F, Ni Y, Wang X, Chen T, Zhao A, Qiu Y, Bao Y, Jia W, Jia W. Human gouty arthritis is associated with a distinct serum trace elemental profile. Metallomics 2012; 4:244-52. [DOI: 10.1039/c2mt00178k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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18
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Whitfield JB, Dy V, McQuilty R, Zhu G, Heath AC, Montgomery GW, Martin NG. Genetic effects on toxic and essential elements in humans: arsenic, cadmium, copper, lead, mercury, selenium, and zinc in erythrocytes. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:776-82. [PMID: 20053595 PMCID: PMC2898853 DOI: 10.1289/ehp.0901541] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 01/05/2010] [Indexed: 05/20/2023]
Abstract
BACKGROUND AND OBJECTIVES An excess of toxic trace elements or a deficiency of essential ones has been implicated in many common diseases or public health problems, but little is known about causes of variation between people living within similar environments. We estimated effects of personal and socioeconomic characteristics on concentrations of arsenic (As), cadmium (Cd), copper (Cu), mercury (Hg), lead (Pb), selenium (Se), and zinc (Zn) in erythrocytes and tested for genetic effects using data from twin pairs. METHODS We used blood samples from 2,926 adult twins living in Australia (1,925 women and 1,001 men; 30-92 years of age) and determined element concentrations in erythrocytes by inductively coupled plasma-mass spectrometry. We assessed associations between element concentrations and personal and socioeconomic characteristics, as well as the sources of genetic and environmental variation and covariation in element concentrations. We evaluated the chromosomal locations of genes affecting these characteristics by linkage analysis in 501 dizygotic twin pairs. RESULTS Concentrations of Cu, Se, and Zn, and of As and Hg showed substantial correlations, concentrations of As and Hg due mainly to common genetic effects. Genetic linkage analysis showed significant linkage for Pb [chromosome 3, near SLC4A7 (solute carrier family 4, sodium bicarbonate cotransporter, member 7)] and suggestive linkage for Cd (chromosomes 2, 18, 20, and X), Hg (chromosome 5), Se (chromosomes 4 and 8), and Zn {chromosome 2, near SLC11A1 [solute carrier family 11 (proton-coupled divalent metal ion transporters)]}. CONCLUSIONS Although environmental exposure is a precondition for accumulation of toxic elements, individual characteristics and genetic factors are also important. Identification of the contributory genetic polymorphisms will improve our understanding of trace and toxic element uptake and distribution mechanisms.
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Affiliation(s)
- John B Whitfield
- Genetic Epidemiology Unit, Queensland Institute of Medical Research, Brisbane, Australia.
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Associations of blood selenium and serum lipid levels in Japanese premenopausal and postmenopausal women. Menopause 2008; 15:119-24. [PMID: 18257145 DOI: 10.1097/gme.0b013e31806bf32c] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate whether the level of selenium in serum or the level of selenium in erythrocytes (E-Se) was associated with serum lipid parameters (total cholesterol [TC], triglycerides, and high-density and low-density lipoprotein cholesterol [LDL-C]) in pre- and postmenopausal women. DESIGN Healthy female workers aged 35 to 60 years were recruited, and TC, triglycerides, high-density lipoprotein cholesterol, LDL-C, E-Se, and serum-Se levels were measured in 68 premenopausal and 59 postmenopausal women after excluding those who were treated for hyperlipidemia, receiving hormone therapy, had previous gynecological surgeries, or had irregular menstrual cycles. Information on these women, such as smoking status, current status of menstruation, and current or previous medical treatments, was obtained from a self-administered questionnaire. Correlation analyses and stepwise multiple regression analysis were applied to reveal the interrelationship between serum lipids and Se levels after adjusting for age, body mass index, smoking, and menopause status. RESULTS Postmenopausal women had significantly higher levels of TC, triglycerides, and LDL-C and lower levels of E-Se than premenopausal women. TC and LDL-C levels after menopause correlated negatively with E-Se. These associations were also statistically significant after controlling for age, smoking status, and body mass index. E-Se was selected as a significant related variable to explain TC and LDL-C levels as well as body mass index by multiple regression analysis. CONCLUSION E-Se may be one of the possible associated factors that decrease the levels of TC and LDL-C after menopause. Further studies are needed to clarify the cause-and-effect relationship of nutritional Se status and lipid profile.
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Fairweather-Tait SJ, Harvey LJ, Ford D. Does ageing affect zinc homeostasis and dietary requirements? Exp Gerontol 2007; 43:382-8. [PMID: 18079083 DOI: 10.1016/j.exger.2007.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 10/25/2007] [Accepted: 10/30/2007] [Indexed: 10/22/2022]
Abstract
Dietary intakes of zinc are lower in the elderly because of reduced energy requirements, and it is not clear whether ageing impacts on adaptive homeostatic mechanisms, namely absorptive efficiency and endogenous losses in the GI tract. Physiological requirements for zinc are unlikely to change significantly, but there are several attributes of ageing that may affect aspects of zinc metabolism (e.g. changes in gut structure and function, disease states, chronic inflammation, epigenetic changes in genes that express zinc-related proteins and drug regimens) that are worthy of further investigation. There is, as yet, no information on the effects of ageing on zinc transporters, and there are no sensitive and specific measures of zinc status, therefore dietary recommendations for zinc have been derived from factorial calculations using information on zinc absorption and loss, and estimates of dietary bioavailability.
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Aaseth J, Thomassen Y, Ellingsen DG, Støa-Birketvedt G. Prophylactic iron supplementation in pregnant women in Norway. J Trace Elem Med Biol 2001; 15:167-74. [PMID: 11787984 DOI: 10.1016/s0946-672x(01)80062-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In the present study 67 non-anaemic women were randomly allocated to either 100 mg or 15 mg iron daily at about the 10. week of pregnancy. At about week 18, 30 and 36 of pregnancy, as well as 6 weeks after delivery, hemoglobin and the serum concentrations of ferritin, vitamin B12, folates, Zn, Cu and Se were monitored. Dietary allowances of other minerals and vitamins are also increased in pregnancy, and the 15 mg iron tablet was enriched with Zn (10 mg), Cu (2 mg), Se (50 microg), vitamin B12 (3 microg), and folate (0.1 mg). Neither ferritin, nor Cu, Zn or Se concentrations differed statistically significantly between the treatment groups during pregnancy. Ferritin and Zn appeared to decrease approximately parallel to the hemodilution, whereas Cu concentrations increased from a non-pregnant reference mean of 18 micromol Cu/L to a maximum mean of nearly 33 micromol Cu/L during pregnancy. Se decreased concomitantly to about 1.0 micromol Se/L. Serum folate (around 15 micromol/L) was essentially unaffected by pregnancy in the group given multivitamin/mineral supplementation, whereas the mean concentration fell below 10 micromol/L in the group supplemented with 100 mg iron daily. Our results indicate that supplementation of 15 mg Fe daily during pregnancy results in a small reduction of hemoglobin. It is suggested that additional supplementation with folate might be of importance to maintain the serum folate concentration during pregnancy.
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Affiliation(s)
- J Aaseth
- Department of Medicine, Kongsvinger Hospital, Norway
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