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Trace element profile and incidence of type 2 diabetes, cardiovascular disease and colorectal cancer: results from the EPIC-Potsdam cohort study. Eur J Nutr 2021; 60:3267-3278. [PMID: 33590281 PMCID: PMC8354864 DOI: 10.1007/s00394-021-02494-3] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 01/13/2021] [Indexed: 02/07/2023]
Abstract
PURPOSE We aimed to examine the prospective association between manganese, iron, copper, zinc, iodine, selenium, selenoprotein P, free zinc, and their interplay, with incident type 2 diabetes (T2D), cardiovascular disease (CVD) and colorectal cancer (CRC). METHODS Serum trace element (TE) concentrations were measured in a case-cohort study embedded within the EPIC-Potsdam cohort, consisting of a random sub-cohort (n = 2500) and incident cases of T2D (n = 705), CVD (n = 414), and CRC (n = 219). TE patterns were investigated using principal component analysis. Cox proportional hazard models were fitted to examine the association between TEs with T2D, CVD and CRC incidence. RESULTS Higher manganese, zinc, iodine and selenium were associated with an increased risk of developing T2D (HR Q5 vs Q1: 1.56, 1.09-2.22; HR per SD, 95% CI 1.18, 1.05-1.33; 1.09, 1.01-1.17; 1.19, 1.06-1.34, respectively). Regarding CVD, manganese, copper and copper-to-zinc ratio were associated with an increased risk (HR per SD, 95% CI 1.13, 1.00-1.29; 1.22, 1.02-1.44; 1.18, 1.02-1.37, respectively). The opposite was observed for higher selenium-to-copper ratio (HR Q5 vs Q1, 95% CI 0.60, 0.39-0.93). Higher copper and zinc were associated with increasing risk of developing CRC (HR per SD, 95% CI 1.29, 1.05-1.59 and 1.14, 1.00-1.30, respectively). Selenium, selenoprotein P and selenium-to-copper-ratio were associated to decreased risk (HR per SD, 95% CI 0.82, 0.69-0.98; 0.81, 0.72-0.93; 0.77, 0.65-0.92, respectively). Two TE patterns were identified: manganese-iron-zinc and copper-iodine-selenium. CONCLUSION Different TEs were associated with the risk of developing T2D, CVD and CRC. The contrasting associations found for selenium with T2D and CRC point towards differential disease-related pathways.
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Lin J, Shen T. Association of dietary and serum selenium concentrations with glucose level and risk of diabetes mellitus: A cross sectional study of national health and nutrition examination survey, 1999-2006. J Trace Elem Med Biol 2021; 63:126660. [PMID: 33038580 DOI: 10.1016/j.jtemb.2020.126660] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 09/10/2020] [Accepted: 09/26/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND The associations among dietary selenium intake, serum selenium concentration, plasma glucose and glycosylated hemoglobin levels, and diabetes risk remain controversial. This study aimed to evaluate these associations in adults from the United States. METHODS We conducted a cross-sectional study of participants aged 18 years and older who participated in the National Health and Nutrition Examination Survey. Between 1999 and 2006, a total of 41,474 participants were initially included in this study. Multivariable linear or logistic regression analysis was used to investigate the association between dietary selenium intake and serum selenium concentrations, glucose level, and diabetes risk. RESULTS The average age of the participants was 30.32 ± 23.95 years, and 48.72 % were men. Their mean dietary selenium intake and mean serum selenium concentration were 98 ± 55 μg per day and 129 ± 22 ng/mL, respectively. Compared with t he lowest quartile of dietary selenium intake, the highest quartile was associated with elevated plasma glucose levels (β = 2.412, 95 % confidence interval [CI]: 0.420, 4.403, P = 0.018), glycosylated hemoglobin levels (β = 0.080, 95 % CI: 0.041, 0.119, P < 0.001), and diabetes risk (odds ratio [OR] = 2.139, 95 % CI: 1.763, 2.596, P < 0.001). Higher serum selenium was also associated with increased plasma glucose levels (β = 12.454, 95 % CI: 4.122, 20.786, P = 0.003) and glycosylated hemoglobin levels (β = 0.326, 95 % CI: 0.187, 0.465, P < 0.001). A generalized additive model with a spline curve suggested a nonlinear relationship between dietary selenium intake, serum selenium and glucose levels, and diabetes risk. CONCLUSIONS Dietary selenium intake and serum selenium were positively associated with elevated levels of plasma glucose and glycosylated hemoglobin, and the relationships were nonlinear. Additional selenium supplementation for patients with diabetes may not be recommended.
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Affiliation(s)
- Jingjing Lin
- Chengdu University of TCM. School of Basic Medical Sciences, Chengdu, Sichuan, China.
| | - Tao Shen
- Chengdu University of TCM. School of Basic Medical Sciences, Chengdu, Sichuan, China.
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Wang Y, Rijntjes E, Wu Q, Lv H, Gao C, Shi B, Schomburg L. Selenium deficiency is linearly associated with hypoglycemia in healthy adults. Redox Biol 2020; 37:101709. [PMID: 32905881 PMCID: PMC7462470 DOI: 10.1016/j.redox.2020.101709] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/21/2020] [Accepted: 08/27/2020] [Indexed: 11/16/2022] Open
Abstract
Objective The trace element selenium (Se) is needed for regular biosynthesis of selenoproteins, which contribute to antioxidative defense systems and affect redox-regulated signaling. Elevated Se intake and selenoprotein expression levels have been associated with impaired hydrogen peroxide-dependent signaling by insulin, leading to hyperglycemia and insulin resistance. The relation of low Se intake with glucose status and carbohydrate metabolism is poorly known. Research design and methods A cross sectional analysis among healthy subjects residing in two Chinese counties with different habitual Se intakes was conducted. Fasted glucose levels were related to Se concentrations of 5686 adults by linear regression analysis with Se, body mass index, age, thyroid status, insulin and sex as independent variables. Results Serum Se correlated strongly and positively with glucose in the Se-deficient population. There was no strong relationship of Se and glucose in the non-deficient population. Overt hypoglycemia (serum glucose < 2.8 mM) was observed in 19.2% of this random sample of subjects in the Se-deficient and in 1.4% of the moderately supplied population, respectively. Conclusions An adequate Se supply constitutes an important factor for glucose homeostasis in human subjects. The interaction between Se status and glucose control is not limited to hyperglycemia, but apparently extends to hypoglycemia risk in Se deficiency. This newly identified relationship may be of relevance for the course of severe disease including major trauma, sepsis and COVID-19, where Se deficiency has been associated with mortality risk. A cross-sectional study compared serum Se and Glc levels in 5686 healthy adults. Half of the subjects were residing on Se poor soil and displayed Se deficiency. These Se-deficient subjects showed a linear association of serum Se and Glc. A well-matched control population with adequate Se supply showed no such relation. This novel interaction may be relevant for disease and death risk in Se deficiency.
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Affiliation(s)
- Yue Wang
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Eddy Rijntjes
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, CVK, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, 13353, Berlin, Germany
| | - Qian Wu
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China; Xi'an Jiaotong University Health Science Center, Xi'an, 710 061, China
| | - Hongjun Lv
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Chuqi Gao
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Bingyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China.
| | - Lutz Schomburg
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, CVK, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, 13353, Berlin, Germany.
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Macan TP, de Amorim TA, Damiani AP, Beretta ÂCDL, Magenis ML, Vilela TC, Teixeira JP, Andrade VMD. Brazil nut prevents oxidative DNA damage in type 2 diabetes patients. Drug Chem Toxicol 2020; 45:1066-1072. [PMID: 32811197 DOI: 10.1080/01480545.2020.1808667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The Brazil nut (Bertholletia excelsa, H.B.K.) originating from the Amazon region is one of the richest known sources of selenium (Se), a micronutrient that is essential and required for optimal physiological functioning. This mineral presents several health benefits, including improvement of the redox cellular status and maintenance of genomic stability. Knowing that type 2 diabetes mellitus (T2D) is strongly linked to oxidative stress and consequently DNA damage, the aim of this study was to assess the ex vivo antioxidative effects of Se through Brazil nut consumption and its potential in preventing oxidative DNA damage induced by H2O2. In order to accomplish this, the Comet assay (single-cell gel electrophoresis) was used to measure DNA damage in peripheral blood cells harvested before and after supplementation with Brazil nut. Comet assay was also applied ex vivo to measure the potential of Se to prevent oxidative damage to DNA induced by H2O2 in blood of type 2 diabetes patients collected before and after six months of supplementation with Brazil nut. We found that supplementation with Brazil nuts significantly increased serum Se levels. Furthermore, we observed a significant increase in fasting blood glucose after six months of consuming Brazil nuts; however, no significant effect was observed on the levels of glycated hemoglobin. Finally, we noticed that the cells were more resistant to H2O2-induced DNA damage after six months of supplementation with Brazil nut. Thus, consumption of Brazil nuts could decrease oxidative DNA damage in T2D patients, probably through the antioxidative effects of Se.
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Affiliation(s)
- Tamires Pavei Macan
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil.,Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Porto, Portugal
| | - Thais Aquino de Amorim
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - Adriani Paganini Damiani
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - Ângela Caroline da Luz Beretta
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - Marina Lummertz Magenis
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - Thais Ceresér Vilela
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - João Paulo Teixeira
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Porto, Portugal
| | - Vanessa Moraes de Andrade
- Translational Biomedicine Laboratory, Graduate Program of Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
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The epidemiological status, environmental and genetic factors in the etiology of Keshan disease. Cardiovasc Endocrinol Metab 2020; 10:14-21. [PMID: 33634251 DOI: 10.1097/xce.0000000000000214] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/11/2020] [Indexed: 11/26/2022]
Abstract
Keshan disease (KD) is an endemic cardiomyopathy with myocardial lesions for which the precise etiology has not been determined. It was named after the location where it was first identified: Keshan County in China. KD is mainly distributed in a selenium-deficient zone from northeast to southwest China. In recent years, the incidence and prevalence of KD have significantly decreased. Meanwhile, more knowledge was accumulated about the etiology of KD and recent data indicated that genetic factor was involved. In this review, we will first update an overview of the epidemiological status and the environmental and genetic factors involved in this disease.
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He Q, Chen B, Huang Z, Zhao J, He M, Luo D, Li Q, He Y, Wang J, Chen X, Shen M, Duan Y. Association of twenty-three plasma elements with fasting serum glucose among Chinese population from four areas with different pollution level. J Trace Elem Med Biol 2020; 61:126510. [PMID: 32416465 DOI: 10.1016/j.jtemb.2020.126510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 02/07/2020] [Accepted: 03/18/2020] [Indexed: 01/26/2023]
Abstract
BACKGROUND Association between fasting serum glucose (FSG) and certain mineral elements has been extensively reported. Investigation regarding multi-element exposure among subjects with different exposure level is warranted to confirm the association and further explore dose-dependent relationship. METHODS A total of 3488 participants were recruited from four counties of Hunan province, South China. Basic characteristics were collected by face to face interview and 23 elements in plasma were determined by inductively coupled plasma mass spectrometry. We applied fully adjusted generalized linear regression model and multivariable restricted cubic spline function to test the association and dose-response relationship of FSG with 23 elements. RESULTS The results indicated that FSG was positively associated with plasma78selenium level [regression coefficient (β), 0.001; 95 % confidence interval (CI), 0.001, 0.001] in a dose-dependent manner, robust to the adjustment for suspected covariates and stratification by age, gender, BMI and smoking status. A negative association was found between FSG and plasma 208lead (β, -0.004; 95 % CI, -0.016, -0.002), 52chromium (β, -0.002; 95 % CI, -0.004, -0.001) and 47titanium (β, -0.001; 95 % CI, -0.002, -0.001). CONCLUSION 78selenium was positively while 208lead, 52chromium and 47titanium were negatively associated with FSG in the present study. However, prospective studies are needed to confirm the results.
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Affiliation(s)
- Qican He
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Bingzhi Chen
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Zhijun Huang
- Center of Clinical Pharmacology, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Jia Zhao
- Environmental Science and Engineering, College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Meian He
- Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Dan Luo
- Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Qi Li
- Hunan Occupational Disease Prevention and Control Institute, Changsha, 410007, China
| | - Yuefeng He
- Public Health College, Kunming Medical University, Kunming, 650500, China
| | - Jing Wang
- Center for Environment and Health in Water Source Area of South-to-North Water Diversion, Hubei University of Medicine, Shiyan, 442000, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Minxue Shen
- Department of Social Medicine and Health Management, Xiangya School of Public Health, Central South University, Changsha, 410078, China; Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Yanying Duan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
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Schomburg L. The other view: the trace element selenium as a micronutrient in thyroid disease, diabetes, and beyond. Hormones (Athens) 2020; 19:15-24. [PMID: 31823341 DOI: 10.1007/s42000-019-00150-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 10/21/2019] [Indexed: 02/08/2023]
Abstract
Antibiotics are provided for infections caused by bacteria, and statins help to control hypercholesterolemia. When hungry, you need to eat, and when you are deficient in a particular nutrient, the diet should be chosen wisely to provide what is missing. In the matter of providing the essential trace element selenium (Se), there are two different but partly overlapping views on its nature and requirements. Some consider it a medication that should be given to a subset of more or less well-defined (thyroid) patients only, in order to alleviate symptoms, to improve the course of the disease or even to provide a cure, alone or in an adjuvant mode. Such treatment attempts are conducted for a short time period, and potential medical benefits and side effects are evaluated thoroughly. One could also approach Se in medicine in a more holistic way and evaluate primarily the nutritional status of the patient before considering supplementation. The available evidence for positive health effects of supplemental Se can be interpreted as the consequence of correcting deficiency instead of speculating on a direct pharmaceutical action. This short review provides a novel view on Se in (thyroid) disease and beyond and offers an alternative explanation for its positive health effects, i.e., its provision of the substrate needed for allowing adequate endogenous expression of those selenoproteins that are required in certain conditions. In Se deficiency, the lack of the trace element constitutes the main limitation for the required adaptation of selenoprotein expression to counteract health risks and alleviate disease symptoms. Supplemental Se lifts this restriction and enables the full endogenous response of selenoprotein expression. However, since Se does not act as a pharmacological medication per se, it should not be viewed as a dangerous drug, and, importantly, current data show that supplemental Se does not cause diabetes.
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Affiliation(s)
- Lutz Schomburg
- Institute for Experimental Endocrinology, Charité - Universitätsmedizin Berlin, Berlin, Germany.
- Freie Universität Berlin, Berlin, Germany.
- Humboldt-Universität zu Berlin, Berlin, Germany.
- Berlin Institute of Health, Berlin, Suedring 10, D-13353, Berlin, Germany.
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Winther KH, Rayman MP, Bonnema SJ, Hegedüs L. Selenium in thyroid disorders - essential knowledge for clinicians. Nat Rev Endocrinol 2020; 16:165-176. [PMID: 32001830 DOI: 10.1038/s41574-019-0311-6] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/09/2019] [Indexed: 12/14/2022]
Abstract
In the 1990s, selenium was identified as a component of an enzyme that activates thyroid hormone; since this discovery, the relevance of selenium to thyroid health has been widely studied. Selenium, known primarily for the antioxidant properties of selenoenzymes, is obtained mainly from meat, seafood and grains. Intake levels vary across the world owing largely to differences in soil content and factors affecting its bioavailability to plants. Adverse health effects have been observed at both extremes of intake, with a narrow optimum range. Epidemiological studies have linked an increased risk of autoimmune thyroiditis, Graves disease and goitre to low selenium status. Trials of selenium supplementation in patients with chronic autoimmune thyroiditis have generally resulted in reduced thyroid autoantibody titre without apparent improvements in the clinical course of the disease. In Graves disease, selenium supplementation might lead to faster remission of hyperthyroidism and improved quality of life and eye involvement in patients with mild thyroid eye disease. Despite recommendations only extending to patients with Graves ophthalmopathy, selenium supplementation is widely used by clinicians for other thyroid phenotypes. Ongoing and future trials might help identify individuals who can benefit from selenium supplementation, based, for instance, on individual selenium status or genetic profile.
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Affiliation(s)
| | - Margaret Philomena Rayman
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Steen Joop Bonnema
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, Denmark
| | - Laszlo Hegedüs
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, Denmark.
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Winther KH, Papini E, Attanasio R, Negro R, Hegedüs L. A 2018 European Thyroid Association Survey on the Use of Selenium Supplementation in Hashimoto's Thyroiditis. Eur Thyroid J 2020; 9:99-105. [PMID: 32257959 PMCID: PMC7109430 DOI: 10.1159/000504781] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 11/14/2019] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE To investigate clinical practice regarding the use of selenium supplementation in patients with Hashimoto's thyroiditis (HT) among members of the European Thyroid Association (ETA). METHODS ETA members were invited to participate in an online survey investigating the use of selenium supplementation across the spectrum of benign thyroid diseases. Of 872 invited members, 242 (28%) completed the survey. After exclusion of basic scientists and non-European members, survey data from 212 respondents were eligible for further analyses. Responses from 65 (31%) individuals who did not at all recommend selenium, or only considered its use in the setting of a clinical trial, were not included in the final analysis of survey data from 147 respondents. RESULTS While only a minority of respondents (29 of 147, 20%) stated that the available evidence warrants the use of Se in patients with HT, a statistically significant majority (95 of 147; 65%, p < 0.001) used Se occasionally or routinely. Se was predominantly recommended for patients with HT not receiving LT4 (102 of 147; 69%) to reduce circulating thyroid autoantibody levels. Very few respondents routinely recommended Se to pregnant patients with HT. CONCLUSIONS A minority of responding ETA members stated that the available evidence warrants the use of Se in HT, but a majority recommended it to some extent, especially to patients not yet receiving LT4. This is questionable, and selenium is not recommended to patients with HT according to current ETA guidelines. Ongoing and future trials may lead to the reversal of current medical practice.
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Affiliation(s)
- Kristian Hillert Winther
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, Denmark
- *Kristian Hillert Winther, Department of Endocrinology and Metabolism, Odense University Hospital, Kløvervænget 4–6, DK–5000 Odense C (Denmark), E-Mail
| | - Enrico Papini
- Department of Endocrinology and Metabolism, Ospedale Regina Apostolorum, Rome, Italy
| | | | - Roberto Negro
- Division of Endocrinology, V. Fazzi Hospital, Lecce, Italy
| | - Laszlo Hegedüs
- Department of Endocrinology and Metabolism, Odense University Hospital, Odense, Denmark
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Mahdavi Gorabi A, Hasani M, Djalalinia S, Zarei M, Ejtahed H, Abdar ME, Asayesh H, Azimzadeh M, Qorbani M, Noroozi M. Effect of selenium supplementation on glycemic indices: a meta-analysis of randomized controlled trials. J Diabetes Metab Disord 2019; 18:349-362. [PMID: 31890660 PMCID: PMC6914762 DOI: 10.1007/s40200-019-00419-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 06/12/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE The association between selenium supplementation and glycemic indices seems to be a controversial issue. This systematic review and meta-analysis was conducted to evaluate the effect of selenium supplementation on glycemic indices. METHODS We systematically searched PubMed/MEDLINE, ISI/WOS, and Scopus (from their commencements up to Jan 2016) for relevant studies examining the association between intake of selenium and glycemic indices. The data were extracted from relevant qualified studies and estimated using the random-effect or pooled model and standardized mean difference (SMD) with 95% confidence interval (CI). RESULTS Twelve articles published between 2004 and 2016 were included. In all the studies, the participants were randomly assigned to an intervention group (n = 757) or a control group(n = 684). All the studies were double blind, placebo controlled trials. Selenium supplementation resulted in a significant decrease in homeostasis model of assessment-estimated β-cell function (HOMA-B) (SMD: -0.63; 95%CI: -0.89 to -0.38) and a significant increase in quantitative insulin sensitivity check index (QUICKI) (SMD: by 0.74; 95%CI: 0.49 to 0.1) as compared with the controls. There were no statistically significant improvements in glycemic indices, such as fasting plasma glucose (FPG), insulin, homeostasis model of assessment-estimated insulin resistance (HOMA-IR), Hemoglobin A1c (HbA1c) and adiponectin. CONCLUSION This meta-analysis indicated that selenium supplementation significantly decreased HOMA-B and increased QUICKI score. There was no statistically significant improvement in FPG, insulin, HOMA-IR, HbA1c and adiponectin indices following selenium supplementation.
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Affiliation(s)
- Armita Mahdavi Gorabi
- Department of Basic and Clinical Research, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Motahareh Hasani
- School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Shirin Djalalinia
- Development of Research & Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran
- Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Zarei
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor Malaysia
| | - Hanieh Ejtahed
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular -Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Esmaeili Abdar
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hamid Asayesh
- Department of Medical Emergencies, Qom University of Medical Sciences, Qom, Iran
| | - Mehdi Azimzadeh
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Mostafa Qorbani
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Noroozi
- Social Determinants of Health Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
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Greiner A, Hildebrand J, Feltes R, Uter W, Drexler H, Göen T. Evaluation of urinary selenium as a biomarker of human occupational exposure to elemental and inorganic selenium. Int Arch Occup Environ Health 2019; 93:325-335. [PMID: 31732795 DOI: 10.1007/s00420-019-01489-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/03/2019] [Indexed: 11/28/2022]
Abstract
PURPOSE Selenium (Se) is an essential trace element, which however, exhibits a narrow safe range of intake. Selenium also occurs at several workplaces, which results in an inhalative selenium exposure of the employees. Thus, an efficient exposure assessment strategy is demanded. The most established parameter, selenium in plasma, mostly consists of protein-bound selenium. This study aimed to investigate urinary total selenium (Se-U) as an additional biomarker of recent human occupational exposure to elemental and inorganic selenium. METHODS Pre- and post-shift urine samples from employees with exposure to selenium-containing dust were analyzed to total selenium and compared with Se levels in urine samples from controls without occupational exposure to selenium as well as correlated with the recent ambient Se exposure by personal air monitoring. RESULTS Se-U in post-shift samples was considerably increased compared to the levels in pre-shift samples as well as to the controls. However, Se-U in pre-shift urine was elevated compared to the Se-U in controls too. Se-U in post-shift urine and even better the shift increment in Se-U correlated with the air exposure of the present shift. A rough estimation by Se-U shift increment and external exposure accounted for an inhalative resorption rate of about 1%. CONCLUSION Our data indicate that Se-U can display the exposure. Pre-shift Se-U levels may be based on previous exposure and indicate a slow urinary elimination kinetics. The results hint for a rather low resorption rate of selenium and inorganic selenium compounds via the lung.
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Affiliation(s)
- A Greiner
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 9-11, 91054, Erlangen, Germany.
| | - J Hildebrand
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 9-11, 91054, Erlangen, Germany
| | - R Feltes
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 9-11, 91054, Erlangen, Germany
| | - W Uter
- Department of Medical Informatics, Biometry and Epidemiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - H Drexler
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 9-11, 91054, Erlangen, Germany
| | - T Göen
- Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 9-11, 91054, Erlangen, Germany
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Ruberte AC, Sanmartin C, Aydillo C, Sharma AK, Plano D. Development and Therapeutic Potential of Selenazo Compounds. J Med Chem 2019; 63:1473-1489. [PMID: 31638805 DOI: 10.1021/acs.jmedchem.9b01152] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Incorporation of selenium (Se) atom into small molecules can substantially enhance their antioxidant, anti-inflammatory, antimutagenic, antitumoral or chemopreventive, antiviral, antibacterial, antifungal, antiparasitic, and neuroprotective effects. Specifically, selenazo compounds have received great attention owing to their chemical properties, pharmaceutical applications, and low toxicity. In this Perspective, we compile extensive literature evidence with the description and discussion of the most recent advances in different selenazo and selenadiazo motifs as potential pharmacological candidates. We also provide some perspectives on the challenges and future directions in the advancement of these selenazo compounds, each of which could generate drug candidates for various diseases.
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Affiliation(s)
- Ana Carolina Ruberte
- Departamento de Tecnología y Química Farmacéuticas, Facultad de Farmacia y Nutrición , Universidad de Navarra , Irunlarrea 1 , E-31008 Pamplona , Spain
| | - Carmen Sanmartin
- Departamento de Tecnología y Química Farmacéuticas, Facultad de Farmacia y Nutrición , Universidad de Navarra , Irunlarrea 1 , E-31008 Pamplona , Spain
| | - Carlos Aydillo
- Departamento de Tecnología y Química Farmacéuticas, Facultad de Farmacia y Nutrición , Universidad de Navarra , Irunlarrea 1 , E-31008 Pamplona , Spain
| | - Arun K Sharma
- Department of Pharmacology, Penn State Cancer Institute, CH72 , Penn State College of Medicine , 500 University Drive , Hershey , Pennsylvania 17033 , United States
| | - Daniel Plano
- Departamento de Tecnología y Química Farmacéuticas, Facultad de Farmacia y Nutrición , Universidad de Navarra , Irunlarrea 1 , E-31008 Pamplona , Spain.,Department of Pharmacology, Penn State Cancer Institute, CH72 , Penn State College of Medicine , 500 University Drive , Hershey , Pennsylvania 17033 , United States
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63
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Abstract
Selenium is an essential trace element for maintenance of overall health, whose deficiency and dyshomeostasis have been linked to a variety of diseases and disorders. The majority of previous researches focused on characterization of genes encoding selenoproteins or proteins involved in selenium metabolism as well as their functions. Many studies in humans also investigated the relationship between selenium and complex diseases, but their results have been inconsistent. In recent years, systems biology and "-omics" approaches have been widely used to study complex and global variations of selenium metabolism and function in physiological and different pathological conditions. The present paper reviews recent progress in large-scale and systematic analyses of the relationship between selenium status or selenoproteins and several complex diseases, mainly including population-based cohort studies and meta-analyses, genetic association studies, and some other omics-based studies. Advances in ionomics and its application in studying the interaction between selenium and other trace elements in human health and diseases are also discussed.
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Affiliation(s)
- Huimin Ying
- Department of Endocrinology, Xixi Hospital of Hangzhou, Hangzhou, 310023, Zhejiang, People's Republic of China
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, Brain Disease and Big Data Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, Guangdong, People's Republic of China
| | - Yan Zhang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, Brain Disease and Big Data Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, Guangdong, People's Republic of China.
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Lima LW, Stonehouse GC, Walters C, Mehdawi AFE, Fakra SC, Pilon-Smits EAH. Selenium Accumulation, Speciation and Localization in Brazil Nuts ( Bertholletia excelsa H.B.K.). PLANTS 2019; 8:plants8080289. [PMID: 31426292 PMCID: PMC6724122 DOI: 10.3390/plants8080289] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/06/2019] [Accepted: 08/12/2019] [Indexed: 12/28/2022]
Abstract
More than a billion people worldwide may be selenium (Se) deficient, and supplementation with Se-rich Brazil nuts may be a good strategy to prevent deficiency. Since different forms of Se have different nutritional value, and Se is toxic at elevated levels, careful seed characterization is important. Variation in Se concentration and correlations of this element with other nutrients were found in two batches of commercially available nuts. Selenium tissue localization and speciation were further determined. Mean Se levels were between 28 and 49 mg kg−1, with up to 8-fold seed-to-seed variation (n = 13) within batches. Brazil nut Se was mainly in organic form. While present throughout the seed, Se was most concentrated in a ring 1 to 2 mm below the surface. While healthy, Brazil nuts should be consumed in moderation. Consumption of one seed (5 g) from a high-Se area meets its recommended daily allowance; the recommended serving size of 30 g may exceed the allowable daily intake (400 μg) or even its toxicity threshold (1200 μg). Based on these findings, the recommended serving size may be re-evaluated, consumers should be warned not to exceed the serving size and the seed may be sold as part of mixed nuts, to avoid excess Se intake.
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Affiliation(s)
- Leonardo W Lima
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA.
| | - Gavin C Stonehouse
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Christina Walters
- National Laboratory for Genetic Resources Preservation, USDA-ARS, Fort Collins, CO 80521, USA
| | - Ali F El Mehdawi
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Sirine C Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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65
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Stróżyk A, Osica Z, Przybylak JD, Kołodziej M, Zalewski BM, Mrozikiewicz-Rakowska B, Szajewska H. Effectiveness and safety of selenium supplementation for type 2 diabetes mellitus in adults: a systematic review of randomised controlled trials. J Hum Nutr Diet 2019; 32:635-645. [PMID: 31148299 DOI: 10.1111/jhn.12670] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The role of selenium (Se) in the management of type 2 diabetes mellitus (T2DM) remains unclear. We systematically assessed the effectiveness and safety of Se supplementation in adults with T2DM. METHODS MEDLINE, EMBASE and the Cochrane Library were searched up to April 2018 for randomised controlled trials (RCTs) evaluating the effectiveness of Se against a comparator on DM-related outcomes. RESULTS Four RCTs (241 participants) were included. In individual RCTs, Se supplementation significantly reduced fasting insulin levels [mean difference (MD) = -3.6 μIU mL-1 ; 95% confidence interval (CI) = -6.36 to -0.84; MD = -5.8 μIU mL-1 ; 95% CI = -9.23 to -2.37], homeostasis model of assessment-estimated insulin resistance (HOMA-IR) (MD = -1; 95% CI = -1.79 to -0.21; MD = -1.6; 95% CI, -2.58 to -0.62) and homeostasis model of assessment-estimated B cell function (HOMA-B) (MD = -13.6; 95% CI = -23.4 to -3.8; MD = -22.6; 95% CI = -36.39 to -8.81). No effects of Se were noted on most of the other outcomes of interest. None of the RCTs assessed the mortality, diabetes-related complications, non-high-density lipoprotein (non-HDL), blood pressure and health-related quality of life. The impact on HDL and fasting plasma glucose (FPG) was ambiguous. Only one adverse event (nausea) was reported as a reason for discontinuing the intervention; however, among the studies, the reporting was not accurate. Furthermore, only one RCT reported increase in FPG level in the Se group (MD = 36.38 mg dL-1 ; 95% CI = 15.39-57.37). CONCLUSIONS Currently, there is no evidence to support the effectiveness of Se supplementation in the T2DM population.
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Affiliation(s)
- A Stróżyk
- Medical University of Warsaw, Warsaw, Poland
| | - Z Osica
- Medical University of Warsaw, Warsaw, Poland
| | | | - M Kołodziej
- Department of Paediatrics, Medical University of Warsaw, Warsaw, Poland
| | - B M Zalewski
- Department of Paediatrics, Medical University of Warsaw, Warsaw, Poland
| | - B Mrozikiewicz-Rakowska
- Department of Diabetology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
| | - H Szajewska
- Department of Paediatrics, Medical University of Warsaw, Warsaw, Poland
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