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Bizerea-Moga TO, Pitulice L, Bizerea-Spiridon O, Moga TV. Exploring the Link between Oxidative Stress, Selenium Levels, and Obesity in Youth. Int J Mol Sci 2024; 25:7276. [PMID: 39000383 PMCID: PMC11242909 DOI: 10.3390/ijms25137276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/26/2024] [Accepted: 06/28/2024] [Indexed: 07/16/2024] Open
Abstract
Obesity is a worldwide increasing concern. Although in adults this is easily estimated with the body mass index, in children, who are constantly growing and whose bodies are changing, the reference points to assess weight status are age and gender, and need corroboration with complementary data, making their quantification highly difficult. The present review explores the interaction spectrum of oxidative stress, selenium status, and obesity in children and adolescents. Any factor related to oxidative stress that triggers obesity and, conversely, obesity that induces oxidative stress are part of a vicious circle, a complex chain of mechanisms that derive from each other and reinforce each other with serious health consequences. Selenium and its compounds exhibit key antioxidant activity and also have a significant role in the nutritional evaluation of obese children. The balance of selenium intake, retention, and metabolism emerges as a vital aspect of health, reflecting the complex interactions between diet, oxidative stress, and obesity. Understanding whether selenium status is a contributor to or a consequence of obesity could inform nutritional interventions and public health strategies aimed at preventing and managing obesity from an early age.
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Affiliation(s)
- Teofana Otilia Bizerea-Moga
- Department XI of Pediatrics-1st Pediatric Discipline, Center for Research on Growth and Developmental Disorders in Children, ‘Victor Babeș’ University of Medicine and Pharmacy Timișoara, Eftimie Murgu Sq No 2, 300041 Timișoara, Romania;
- 1st Pediatric Clinic, ‘Louis Țurcanu’ Children’s Clinical and Emergency Hospital, Iosif Nemoianu 2, 300011 Timișoara, Romania
| | - Laura Pitulice
- Department of Biology-Chemistry, West University of Timişoara, Pestallozi 16, 300115 Timişoara, Romania;
- The Institute for Advanced Environmental Research (ICAM), Popa Şapcă 4C, 300054 Timişoara, Romania
| | - Otilia Bizerea-Spiridon
- Department of Biology-Chemistry, West University of Timişoara, Pestallozi 16, 300115 Timişoara, Romania;
- The Institute for Advanced Environmental Research (ICAM), Popa Şapcă 4C, 300054 Timişoara, Romania
| | - Tudor Voicu Moga
- Department VII of Internal Medicine-Gastroenterology Discipline, Advanced Regional Research Center in Gastroenterology and Hepatology, ‘Victor Babeș’ University of Medicine and Pharmacy Timișoara, Eftimie Murgu Sq No 2, 300041 Timișoara, Romania;
- Gastroenterology and Hepatology Clinic, ‘Pius Brînzeu’ County Emergency Clinical Hospital, Liviu Rebreanu 156, 300723 Timișoara, Romania
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2
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Zhang Y, Meng S, Yu Y, Bi L, Tian J, Zhang L. Associations of dietary selenium intake with the risk of chronic diseases and mortality in US adults. Front Nutr 2024; 11:1363299. [PMID: 38978702 PMCID: PMC11228278 DOI: 10.3389/fnut.2024.1363299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 06/13/2024] [Indexed: 07/10/2024] Open
Abstract
Objective Selenium is an essential micronutrient and a type of dietary antioxidant. This study aimed to investigate the associations of dietary selenium intake with the risk of human chronic disease [cardiovascular disease (CVD), diabetes mellitus (DM), and cancer] and mortality among US general adults. Methods The dietary and demographic data in this study were collected from the National Health and Nutrition Examination Survey (NHANES) from 2007 to 2018. Death outcomes were determined by associating with the National Death Index (NDI) records as of December 31, 2019. Logistic regression analyses were used to investigate the relationship of selenium intake with the risk of CVD, DM, and cancer. The effect of dietary selenium on all-cause and disease-specific mortality was estimated with restricted cubic spline (RCS) curves based on the univariate and multivariate Cox proportional hazard models. Results Among the 25,801 participants, dietary selenium intake was divided into quintiles (Q1-Q5). After covariate adjustment, the results showed that the participants with higher quintiles (Q4 and Q5) of selenium intake tended to have a low risk of CVD (OR = 0.97, 95% CI: 0.96, 0.99; OR = 0.98, 95% CI: 0.97, 1.00, respectively). Moreover, the RCS curves showed a significant nonlinear association between selenium intake and the risk of all-cause (with a HR of 0.82, 95% CI: 0.68, 0.99) and DM-specific mortality (with the lowest HR of 0.30; 95% CI, 0.12-0.75). Furthermore, we conducted a subgroup analysis and found a negative correlation between the highest quartile of selenium intake and all-cause mortality among participants aged 50 and above (HR = 0.75, 95% CI: 0.60-0.93, p = 0.009). Conclusion Our results indicated that a moderate dietary selenium supplement decreased the risk of CVD and displayed a nonlinear trend in association with the risk of all-cause and DM-specific mortality among US adults. In addition, we found that participants aged 50 and older may benefit from higher selenium intake. However, these findings still need to be confirmed through further mechanism exploration.
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Affiliation(s)
- Yuchen Zhang
- The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shixin Meng
- The Basic Medical Sciences College of Nanjing Medical University, Nanjing, China
| | - Yuexin Yu
- Shanghai General Hospital, Shanghai, China
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liangwen Bi
- The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jihong Tian
- The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lizhen Zhang
- The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Dobrzyńska M, Kaczmarek K, Przysławski J, Drzymała-Czyż S. Selenium in Infants and Preschool Children Nutrition: A Literature Review. Nutrients 2023; 15:4668. [PMID: 37960322 PMCID: PMC10648445 DOI: 10.3390/nu15214668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
Selenium (Se), an essential trace element, is fundamental to human health, playing an important role in the formation of thyroid hormones, DNA synthesis, the immune response, and fertility. There is a lack of comprehensive epidemiological research, particularly the serum Se concetration in healthy infants and preschool children compared to the estimated dietary Se intake. However, Se deficiencies and exceeding the UL have been observed in infants and preschool children. Despite the observed irregularities in Se intake, there is a lack of nutritional recommendations for infants and preschool children. Therefore, the main objective of this literature review was to summarize what is known to date about Se levels and the risk of deficiency related to regular consumption in infants and preschool children.
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Affiliation(s)
| | | | | | - Sławomira Drzymała-Czyż
- Department of Bromatology, Poznan University of Medical Science, Rokietnicka 3 Street, 60-806 Poznan, Poland; (M.D.); (K.K.); (J.P.)
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4
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Bwakura-Dangarembizi M, Ziemba L, Tierney C, Reding C, Bone F, Bradford S, Costello D, Browning R, Moye J, Vhembo T, Ngocho JS, Mallewa M, Chinula L, Musoke P, Owor M. Micronutrients and nutritional status among children living with HIV with and without severe acute malnutrition: IMPAACT P1092. BMC Nutr 2023; 9:121. [PMID: 37919816 PMCID: PMC10621230 DOI: 10.1186/s40795-023-00774-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/05/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Micronutrient deficiencies from malabsorption, gut infections, and altered gut barrier function are common in children living with the human immunodeficiency virus (CLHIV) and may worsen with severe acute malnutrition (SAM). Exploratory data of baseline zinc and selenium levels and changes over 48 weeks in children living with HIV by nutritional status are presented. METHODS Zinc, selenium, serum protein and albumin levels measured at study entry and over 48 weeks were compared between children aged 6 to < 36 months who were living with HIV and had SAM or mild malnutrition-normal nutrition. Children with SAM were enrolled after 10-18 days of nutritional rehabilitation. Two-sided t-tests were used to compare levels and changes in levels of micronutrients and proteins by nutritional status. RESULTS Fifty-two participants, 25 with and 27 without SAM, of median (Q1,Q3) age 19 (13,25) and 18 (12,25) months respectively, were enrolled. Zinc deficiency was present at entry in 2/25 (8%) of those who had SAM. Mean (SD) baseline zinc levels were [52.2(15.3) and 54.7(12.0) µg/dL] for the SAM and non-SAM cohorts respectively while selenium levels were similar [92.9(25.0), 84.3(29.2) µg/L]. Mean changes of zinc and selenium from study entry to week 48 were similar between the children with and without SAM. There was no significant difference between baseline protein levels [75.2(13.2), 77.3(9.4) g/L] and the mean change from study entry to 48 weeks was also similar between the two groups; with a mean difference of 4.6 g/L [95% CI, (-2.4,11.6)]. Children with SAM compared to those without had significantly lower serum albumin levels at study entry with similar levels at 48 weeks. CONCLUSIONS Children with severe malnutrition who were initiated/switched to zidovudine/lamivudine/boosted lopinavir following 10 to 18 days of nutritional rehabilitation showed normal baseline levels of selenium and zinc, and had comparable selenium levels after 48 weeks. There was a strong positive correlation in entry and week 48 selenium levels within each cohort and for zinc in the non-SAM cohort. These data support the current WHO recommended approach to management of severe malnutrition in CLHIV who are initiated on combination antiretroviral treatment. TRIAL REGISTRATION Registered with ClinicalTrials.gov Identifier NCT01818258 26/03/2013.
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Affiliation(s)
- Mutsa Bwakura-Dangarembizi
- University of Zimbabwe Clinical Trials Research Centre, Harare, Zimbabwe.
- Department of Paediatrics and Child Health, University of Zimbabwe College of Health Sciences, Harare, Zimbabwe.
| | - Lauren Ziemba
- Center for Biostatistics in AIDS Research in the Department of Biostatistics, Harvard T.H Chan School of Public Health, Boston, MA, USA
| | - Camlin Tierney
- Center for Biostatistics in AIDS Research in the Department of Biostatistics, Harvard T.H Chan School of Public Health, Boston, MA, USA
| | | | | | | | - Diane Costello
- IMPAACT Laboratory Center, University of California, Los Angeles, CA, USA
| | - Renee Browning
- National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - John Moye
- NIH, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Tichaona Vhembo
- University of Zimbabwe Clinical Trials Research Centre, Harare, Zimbabwe
| | - James S Ngocho
- Kilimanjaro Christian Medical University College - Kilimanjaro Christian Medical Center, Moshi, Tanzania
| | - Macpherson Mallewa
- Department of Paediatrics and Child Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Lameck Chinula
- University of North Carolina Project Malawi and Department of Obstetrics and Gynecology's Division of Global Women's Health, Chapel Hill, NC, USA
| | - Philippa Musoke
- Makerere University Johns Hopkins University Research Collaboration, Kampala, Uganda
| | - Maxensia Owor
- Makerere University Johns Hopkins University Research Collaboration, Kampala, Uganda
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Bohn MK, Nichols M, Yang L, Bhayana V, Macri J, Adeli K. Pediatric Reference Value Profiling of Essential Trace and Toxic Elements in Healthy Children and Adolescents Using High-Resolution and Triple Quadrupole Inductively Coupled Plasma Mass Spectrometry. J Appl Lab Med 2023:7174055. [PMID: 37207688 DOI: 10.1093/jalm/jfad019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/07/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND Assessment of trace and toxic element status is important for the diagnosis and monitoring of several pediatric conditions. Elemental deficiency and toxicity have serious implications, particularly in pediatrics wherein risk is higher. Pediatric reference intervals (RIs) for trace elements and normal exposure limits for toxic elements are lacking on modern analytical systems. Herein, reference values were established for 13 plasma and 22 whole blood trace elements in the Canadian Laboratory Initiative on Pediatric Reference Intervals (CALIPER) cohort of healthy children and adolescents. METHODS Approximately 320 healthy children and adolescents were recruited with informed consent. Trace elements were measured in whole blood and plasma samples using 2 technologies: (a) triple quadrupole inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) (n = 172) and (b) high-resolution sector field ICPMS (HR-SF-ICPMS) (n =161). RIs and normal exposure limits were then established according to Clinical and Laboratory Standards Institute guidelines. RESULTS Of all elements assessed, none required sex partitioning and 8 required age partitioning (e.g., copper, manganese, and cadmium). Reference value distributions determined via ICP-MS/MS and HR-SF-ICPMS demonstrated excellent concordance, with few exceptions (e.g., molybdenum, cobalt, and nickel). CONCLUSIONS These data represent the first study wherein pediatric RIs and normal exposure limits were derived simultaneously on 2 different clinically validated MS platforms which provide urgently needed data to inform clinical decision-making for trace elements in pediatrics. Study findings suggest some trace elements require age-specific consideration for appropriate interpretation. Highly concordant observations across the 2 analytical methods also demonstrate the comparability and reliability of results obtained on both platforms.
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Affiliation(s)
- Mary Kathryn Bohn
- CALIPER Program, Department of Pediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Matthew Nichols
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Liju Yang
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Vipin Bhayana
- Department of Pathology and Laboratory Medicine, Western University, London, ON, Canada
| | - Joseph Macri
- Department of Pathology and Molecular Medicine, Hamilton Health Sciences Centre, Hamilton, ON, Canada
| | - Khosrow Adeli
- CALIPER Program, Department of Pediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
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Perez-Plazola M, Diaz J, Stewart CP, Arnold CD, Caswell BL, Lutter CK, Werner ER, Maleta K, Turner J, Prathibha P, Liu X, Gyimah E, Iannotti L. Plasma mineral status after a six-month intervention providing one egg per day to young Malawian children: a randomized controlled trial. Sci Rep 2023; 13:6698. [PMID: 37095119 PMCID: PMC10125967 DOI: 10.1038/s41598-023-33114-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 04/07/2023] [Indexed: 04/26/2023] Open
Abstract
Mineral deficiencies are common in children living in low-resource areas. Eggs are a rich source of essential nutrients and have been shown to improve growth in young children, although little is known about their impact on mineral status. Children aged 6-9 months (n = 660) were randomized to receive either one egg/day for 6-months or no intervention. Anthropometric data, dietary recalls, and venous blood were collected at baseline and 6-months follow-up. Quantification of plasma minerals (n = 387) was done using inductively coupled plasma-mass spectroscopy. Difference-in-difference mean plasma mineral concentrations was determined from baseline and follow-up values and assessed between groups by intention-to-treat using ANCOVA regression models. Prevalence of zinc deficiency was 57.4% at baseline and 60.5% at follow-up. Mean difference (MD) of plasma magnesium, selenium, copper, and zinc levels were not different between groups. Plasma iron concentrations were significantly lower in the intervention compared to the control group (MD = - 9.29; 95% CI: - 15.95, - 2.64). Zinc deficiency was widely prevalent in this population. Mineral deficiencies were not addressed with the egg intervention. Further interventions are needed to improve the mineral status of young children.
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Affiliation(s)
| | - Jenna Diaz
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Washington University School of Medicine in St. Louis, 660 South Euclid Avenue, Campus, Box 8208, St. Louis, MO, 63110, USA.
| | - Christine P Stewart
- Institute for Global Nutrition, Department of Nutrition, University of California Davis, Davis, USA
| | - Charles D Arnold
- Institute for Global Nutrition, Department of Nutrition, University of California Davis, Davis, USA
| | - Bess L Caswell
- Institute for Global Nutrition, Department of Nutrition, University of California Davis, Davis, USA
- Western Human Nutrition Research Center, U.S. Department of Agriculture, Agricultural Research Service,, Davis, USA
| | - Chessa K Lutter
- International Development Group, RTI International US, Triangle Park, USA
| | - E Rochelle Werner
- Institute for Global Nutrition, Department of Nutrition, University of California Davis, Davis, USA
| | - Kenneth Maleta
- School of Global and Public Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Jay Turner
- Division of Engineering Education Energy, Environmental Energy and Chemical Engineering, Washington University in St. Louis, St. Louis, USA
| | - Pradeep Prathibha
- Division of Engineering Education Energy, Environmental Energy and Chemical Engineering, Washington University in St. Louis, St. Louis, USA
| | - Xuan Liu
- Division of Engineering Education Energy, Environmental Energy and Chemical Engineering, Washington University in St. Louis, St. Louis, USA
| | - Emmanuel Gyimah
- Institute for Public Health, Washington University in St. Louis, St. Louis, USA
| | - Lora Iannotti
- Institute for Public Health, Washington University in St. Louis, St. Louis, USA
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Selenium, Stroke, and Infection: A Threefold Relationship; Where Do We Stand and Where Do We Go? Nutrients 2023; 15:nu15061405. [PMID: 36986135 PMCID: PMC10054895 DOI: 10.3390/nu15061405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Stroke is currently the second most common cause of death worldwide and a major cause of serious long-term morbidity. Selenium is a trace element with pleotropic effects on human health. Selenium deficiency has been associated with a prothrombotic state and poor immune response, particularly during infection. Our aim was to synthesize current evidence on the tripartite interrelationship between selenium levels, stroke, and infection. Although evidence is contradictory, most studies support the association between lower serum selenium levels and stroke risk and outcomes. Conversely, limited evidence on the role of selenium supplementation in stroke indicates a potentially beneficial effect of selenium. Notably, the relationship between stroke risk and selenium levels is bimodal rather than linear, with higher levels of serum selenium linked to disturbances of glucose metabolism and high blood pressure, morbidities which are, in turn, substrates for stroke. Another such substrate is an infection, albeit forming a bidirectional relationship with both stroke and the consequences of impaired selenium metabolism. Perturbed selenium homeostasis leads to impaired immune fitness and antioxidant capacity, which both favor infection and inflammation; specific pathogens may also contend with the host for transcriptional control of the selenoproteome, adding a feed-forward loop to this described process. Broader consequences of infection such as endothelial dysfunction, hypercoagulation, and emergent cardiac dysfunction both provide stroke substrates and further feed-forward feedback to the consequences of deficient selenium metabolism. In this review, we provide a synthesis and interpretation of these outlined complex interrelationships that link selenium, stroke, and infection and attempt to decipher their potential impact on human health and disease. Selenium and the unique properties of its proteome could provide both biomarkers and treatment options in patients with stroke, infection, or both.
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Turck D, Bohn T, Castenmiller J, de Henauw S, Hirsch‐Ernst K, Knutsen HK, Maciuk A, Mangelsdorf I, McArdle HJ, Peláez C, Pentieva K, Siani A, Thies F, Tsabouri S, Vinceti M, Aggett P, Crous Bou M, Cubadda F, Ciccolallo L, de Sesmaisons Lecarré A, Fabiani L, Titz A, Naska A. Scientific opinion on the tolerable upper intake level for selenium. EFSA J 2023; 21:e07704. [PMID: 36698500 PMCID: PMC9854220 DOI: 10.2903/j.efsa.2023.7704] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientific opinion on the tolerable upper intake level (UL) for selenium. Systematic reviews of the literature were conducted to identify evidence regarding excess selenium intake and clinical effects and potential biomarkers of effect, risk of chronic diseases and impaired neuropsychological development in humans. Alopecia, as an early observable feature and a well-established adverse effect of excess selenium exposure, is selected as the critical endpoint on which to base a UL for selenium. A lowest-observed-adverse-effect-level (LOAEL) of 330 μg/day is identified from a large randomised controlled trial in humans (the Selenium and Vitamin E Cancer Prevention Trial (SELECT)), to which an uncertainty factor of 1.3 is applied. A UL of 255 μg/day is established for adult men and women (including pregnant and lactating women). ULs for children are derived from the UL for adults using allometric scaling (body weight0.75). Based on available intake data, adult consumers are unlikely to exceed the UL, except for regular users of food supplements containing high daily doses of selenium or regular consumers of Brazil nuts. No risk has been reported with the current levels of selenium intake in European countries from food (excluding food supplements) in toddlers and children, and selenium intake arising from the natural content of foods does not raise reasons for concern. Selenium-containing supplements in toddlers and children should be used with caution, based on individual needs.
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de Almeida CB, Leite HP, Lopes Junior E, Konstantyner T, Franco MDCP. Erythrocyte and plasma selenium in children with acute inflammatory response. J Trace Elem Med Biol 2022; 74:127068. [PMID: 36162157 DOI: 10.1016/j.jtemb.2022.127068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 08/20/2022] [Accepted: 09/08/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Plasma selenium may not reflect selenium status in critically ill patients because it transiently decreases inversely with the magnitude of the systemic inflammatory response. The decision to supplement selenium should ideally be based on laboratory measurements that reliably reflect selenium status. We hypothesized that erythrocyte selenium, unlike plasma selenium, is not affected by the systemic inflammatory response in critically ill children. METHODS In a prospective study of 109 critically ill children, plasma and erythrocyte selenium concentrations were evaluated on admission, and plasma selenoprotein P was evaluated on days 1, 2, and 3 of the ICU stay. The main outcome was the effect of systemic inflammation on the erythrocyte and plasma selenium concentrations. The magnitude of the systemic inflammatory response was measured using serum C-reactive protein (CRP) and procalcitonin levels. The covariates were age, sex, anthropometric nutritional status, diagnosis of severe sepsis/septic shock, and clinical severity on admission. Multiple linear regression and generalized estimating equations were used for statistical analysis. RESULTS Erythrocyte selenium levels were not influenced by the magnitude of the inflammatory response or by the patient's clinical severity. Procalcitonin (β coefficient=-0.99; 95%CI: -1.64; -0.34, p = 0.003) and clinical severity (β coefficient= -11.13; 95%CI: -21.6; -0.63), p = 0.038) on admission were associated with decreased plasma selenium concentrations. Erythrocyte selenium was associated with selenoprotein P in the first three days of ICU stay (β coefficient=0.32; 95%CI: 0.20; 0.44, p < 0.001). CONCLUSION Unlike plasma selenium, erythrocyte selenium does not change in children with an acute systemic inflammatory response and is associated with selenoprotein P concentrations. Erythrocyte selenium is probably a more reliable marker than plasma selenium for evaluating the selenium status in critically ill children.
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Affiliation(s)
- Cláudia Bezerra de Almeida
- Discipline of Pediatric Nutrition, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Heitor Pons Leite
- Discipline of Pediatric Nutrition, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Emilio Lopes Junior
- Discipline of Pediatric Nutrition, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Tulio Konstantyner
- Discipline of Pediatric Nutrition, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil.
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Tian FY, Kennedy EM, Hermetz K, Burt A, Everson TM, Punshon T, Jackson BP, Hao K, Chen J, Karagas MR, Koestler DC, Marsit C. Selenium-associated differentially expressed microRNAs and their targeted mRNAs across the placental genome in two U.S. birth cohorts. Epigenetics 2022; 17:1234-1245. [PMID: 34784848 PMCID: PMC9542509 DOI: 10.1080/15592294.2021.2003044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/21/2021] [Accepted: 11/02/2021] [Indexed: 10/19/2022] Open
Abstract
Selenium is an important micronutrient for foetal development. MicroRNAs play an important role in the function of the placenta, in communication between the placenta and maternal systems, and their expression can be altered through environmental and nutritional cues. To investigate the associations between placental selenium concentration and microRNA expression in the placenta, our observational study included 393 mother-child pairs from the New Hampshire Birth Cohort Study (NHBCS) and the Rhode Island Child Health Study (RICHS). Placental selenium concentrations were quantified using inductively coupled plasma mass spectrometry, and microRNA transcripts were measured using RNA-seq. We fit negative binomial additive models for assessing the association between selenium and microRNAs. We used the microRNA Data Integration Portal (mirDIP) to predict the target mRNAs of the differentially expressed microRNAs and verified the relationships between miRNA and mRNA targets in a subset of samples using existing whole transcriptome data (N = 199). We identified a non-monotonic association between selenium concentration and the expression of miR-216a-5p/miR-217-5p cluster (effective degrees of freedom, EDF = 2.44 and 2.08; FDR = 3.08 × 10-5) in placenta. Thirty putative target mRNAs of miR-216a-5p and/or miR-217-5p were identified computationally and empirically and were enriched in selenium metabolic pathways (driven by selenoprotein coding genes, TXNRD2 and SELENON). Our findings suggest that selenium influences placental microRNA expression. Further, miR-216a-5p and its putative target mRNAs could be the potential mechanistic targets of the health effect of selenium.
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Affiliation(s)
- Fu-Ying Tian
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Elizabeth M. Kennedy
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Karen Hermetz
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Amber Burt
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Todd M. Everson
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA
| | - Brian P. Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire, USA
| | - Ke Hao
- Department of Genetics and Genome Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jia Chen
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire, USA
- Children’s Environmental Health and Disease Prevention Research Center at Dartmouth, Dartmouth College, Hanover, New Hampshire, USA
| | - Devin C. Koestler
- The University Kansas Cancer Center, The University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Biostatistics & Data Science, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Carmen Marsit
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
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Chakrabarty B, Dogra AS, Toteja GS, Pandey RM, Paul VK, Gulati S. Serum Trace Elements in Children with Well-Controlled and Drug Refractory Epilepsy Compared to Controls: An Observational Study. Neurol India 2022; 70:1846-1851. [PMID: 36352577 DOI: 10.4103/0028-3886.359205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND Trace elements have been implicated in pathogenesis of epilepsy. Studies till date have shown altered levels of serum trace elements in children with epilepsy. OBJECTIVE The objective of the current was to estimate serum levels of trace elements in children with well-controlled and drug refractory epilepsy and compare it with controls. METHODOLOGY In a tertiary care teaching hospital of North India, serum selenium, copper, zinc, and iron were estimated in well-controlled and drug refractory epileptic children aged 2-12 years and compared with age and gender matched controls. RESULTS A total of 106 children with epilepsy (55 drug refractory and 51 well controlled) and 52 age and gender matched controls were included in the study. Serum selenium and copper were significantly decreased in cases compared to controls. After classifying epilepsy into well-controlled and drug refractory cases, only in the latter the significant difference for serum selenium and copper levels remained compared to controls. Additionally, in the drug refractory cases, serum iron levels were significantly reduced compared to controls. CONCLUSIONS Serum trace elements are altered in children with epilepsy (more so in the drug refractory group) compared to controls. Monitoring of serum trace elements in children with epilepsy should be considered. Up to one-third of epilepsy is drug refractory of which only another third are amenable to surgery. It is worth investigating the therapeutic potential of altered micronutrient status in these patients.
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Affiliation(s)
- Biswaroop Chakrabarty
- Child Neurology Division, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Ankush Singh Dogra
- Child Neurology Division, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - G S Toteja
- Indian Council of Medical Research, New Delhi, India
| | - R M Pandey
- Child Neurology Division, Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Vinod K Paul
- Child Neurology Division, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Sheffali Gulati
- Child Neurology Division, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
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Bakhtiari E, Heydarian F, Khalesi M, Jafarian F, Heidarian M. A Comparison Between Serum Selenium Level in Febrile Children with or Without Seizure. Biol Trace Elem Res 2022; 200:3103-3106. [PMID: 34617242 DOI: 10.1007/s12011-021-02936-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 09/20/2021] [Indexed: 01/12/2023]
Abstract
The role of trace elements in febrile seizure (FS) was considered recently. The present study was performed evaluating the serum level of selenium in febrile children aged 6-60 months with and without seizure. A cross-sectional study was performed in Mashhad University of Medical Sciences, Mashhad, Iran. Sixty patients aged 6-60 months including 30 children with FS and 30 febrile children without seizure were included. Blood sample was taken, and the serum level of selenium was measured. Data was analyzed using SPSS software. Sixteen patients in FS group (53.3%) and 10 patients in febrile group (33.3%) were males with an average age of 25.21 ± 15.91 and 26.47 ± 17.61 months, respectively. There was no significant difference between groups in age and sex (p = 0.77 and p = 0.19, respectively). The serum level of selenium was 87.34 ± 8.23 and 89.63 ± 9.83 µg/L in FS and febrile groups, respectively. Difference was not significant (p = 0.33). In children aged less than 1 year, the serum level of selenium in FS and febrile group was 83.32 ± 6.2 µg/L and 82.55 ± 8.32 µg/L, respectively. Difference was not significant (p = 0.87). In children aged more than 1 year, the serum level of selenium in FS significantly was lower compared to febrile group (87.96 ± 8.42 µg/L and 93.17 ± 8.66 µg/L, respectively, p = 0.04). The serum level of selenium was lower in children aged more than 1 year with febrile seizure compared to febrile ones.
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Affiliation(s)
- Elham Bakhtiari
- Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Clinical Research Unit, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farhad Heydarian
- Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Maryam Khalesi
- Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Lima LG, Santos AAMD, Gueiber TD, Gomes RZ, Martins CM, Chaikoski AC. Relation between Selenium and Female Fertility: A Systematic Review. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRICIA : REVISTA DA FEDERACAO BRASILEIRA DAS SOCIEDADES DE GINECOLOGIA E OBSTETRICIA 2022; 44:701-709. [PMID: 35668679 PMCID: PMC9948146 DOI: 10.1055/s-0042-1744288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To analyze the influence of selenium in female fertility. DATA SOURCE A search was performed in the following databases: MEDLINE, Web of Science, Scopus, SciELO, LILACS, MDPI, ScienceDirect, and Europe PMC. The descriptors selected were "selenium" AND "female" AND "fertility". The search interval was from 1996 to 2021. STUDY SELECTION The evaluation was performed independently by two reviewers, and a third reviewer confirmed the inclusion of papers in case of divergence between the first two reviewers. Papers were selected after the title and abstract were read, and those that met the eligibility criteria had the full text read. DATA COLLECTION The following data was extracted: author, year of publication, country, type of study, objective, method, sample size, follow-up period, patients' mean age, inclusion and exclusion criteria, and concentration of serum and capillary selenium. The data was organized in chronological order of paper publication. DATA SYNTHESIS The number of papers identified totaled 3,800, out of which 7 were included in the systematic review. The studies indicated a positive correlation between serum selenium and antioxidant concentration in the follicular fluid, reduction in antithyroid antibodies, oocyte production and follicle number. CONCLUSION Selenium supplementation is promising in women with this micronutrient deficiency to promote improvement of the reproductive efficiency and prevent damage to the pregnancy. Further studies on this theme are still required.
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Affiliation(s)
- Luiz Gustavo Lima
- Department of Medicine, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
| | | | - Tiago Daniel Gueiber
- Department of Medicine, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Ricardo Zanetti Gomes
- Department of Medicine, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
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Zyambo K, Hodges P, Chandwe K, Chisenga CC, Mayimbo S, Amadi B, Kelly P, Kayamba V. Selenium status in adults and children in Lusaka, Zambia. Heliyon 2022; 8:e09782. [PMID: 35800716 PMCID: PMC9253361 DOI: 10.1016/j.heliyon.2022.e09782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/14/2022] [Accepted: 06/20/2022] [Indexed: 10/26/2022] Open
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Gupta S, Zaman M, Fatima S, Shahzad B, Brazier AKM, Moran VH, Broadley MR, Zia MH, Bailey EH, Wilson L, Khan IM, Sinclair JK, Lowe NM. The Impact of Consuming Zinc-Biofortified Wheat Flour on Haematological Indices of Zinc and Iron Status in Adolescent Girls in Rural Pakistan: A Cluster-Randomised, Double-Blind, Controlled Effectiveness Trial. Nutrients 2022; 14:nu14081657. [PMID: 35458222 PMCID: PMC9026921 DOI: 10.3390/nu14081657] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 02/05/2023] Open
Abstract
Biofortification of wheat is potentially a sustainable strategy to improve zinc intake; however, evidence of its effectiveness is needed. A household-based, double-blind, cluster-randomized controlled trial (RCT) was conducted in rural Pakistan. The primary objective was to examine the effects of consuming zinc-biofortified wheat flour on the zinc status of adolescent girls aged 10−16 years (n = 517). Households received either zinc-biofortified flour or control flour for 25 weeks; blood samples and 24-h dietary recalls were collected for mineral status and zinc intake assessment. Plasma concentrations of zinc (PZC), selenium and copper were measured via inductively coupled plasma mass spectrometry and serum ferritin (SF), transferrin receptor, alpha 1-acid glycoprotein and C-reactive protein by immunoassay. Consumption of the zinc-biofortified flour resulted in a moderate increase in intakes of zinc (1.5 mg/day) and iron (1.2 mg/day). This had no significant effect on PZC (control 641.6 ± 95.3 µg/L vs. intervention 643.8 ± 106.2 µg/L; p = 0.455), however there was an overall reduction in the rate of storage iron deficiency (SF < 15 µg/L; control 11.8% vs. 1.0% intervention). Consumption of zinc-biofortified flour increased zinc intake (21%) but was not associated with an increase in PZC. Establishing a sensitive biomarker of zinc status is an ongoing priority.
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Affiliation(s)
- Swarnim Gupta
- Lancashire Research Centre for Global Development, University of Central Lancashire, Preston PR1 2HE, UK; (S.G.); (A.K.M.B.); (V.H.M.); (J.K.S.)
| | - Mukhtiar Zaman
- Department of Pulmonology, Rehman Medical Institute, Peshawar 25000, Pakistan;
| | - Sadia Fatima
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25100, Pakistan; (S.F.); (B.S.)
| | - Babar Shahzad
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25100, Pakistan; (S.F.); (B.S.)
| | - Anna K. M. Brazier
- Lancashire Research Centre for Global Development, University of Central Lancashire, Preston PR1 2HE, UK; (S.G.); (A.K.M.B.); (V.H.M.); (J.K.S.)
| | - Victoria H. Moran
- Lancashire Research Centre for Global Development, University of Central Lancashire, Preston PR1 2HE, UK; (S.G.); (A.K.M.B.); (V.H.M.); (J.K.S.)
| | - Martin R. Broadley
- School of Biosciences, Sutton Bonington Campus, University of Nottingham, Leicester NG7 2RD, UK; (M.R.B.); (E.H.B.); (L.W.)
- Rothamsted Research, West Common, Harpenden AL5 2JQ, UK
| | - Munir H. Zia
- Research and Development Department, Fauji Fertilizer Co., Ltd., Rawalpindi 46000, Pakistan;
| | - Elizabeth H. Bailey
- School of Biosciences, Sutton Bonington Campus, University of Nottingham, Leicester NG7 2RD, UK; (M.R.B.); (E.H.B.); (L.W.)
| | - Lolita Wilson
- School of Biosciences, Sutton Bonington Campus, University of Nottingham, Leicester NG7 2RD, UK; (M.R.B.); (E.H.B.); (L.W.)
| | - Iqbal M. Khan
- Department of Pathology, Rehman Medical Institute, Peshawar 25000, Pakistan;
| | - Jonathan K. Sinclair
- Lancashire Research Centre for Global Development, University of Central Lancashire, Preston PR1 2HE, UK; (S.G.); (A.K.M.B.); (V.H.M.); (J.K.S.)
| | - Nicola M. Lowe
- Lancashire Research Centre for Global Development, University of Central Lancashire, Preston PR1 2HE, UK; (S.G.); (A.K.M.B.); (V.H.M.); (J.K.S.)
- Correspondence: ; Tel.: +44-(0)-1772-89-3599
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Development of age-dependent micronutrient centile charts and their utility in children with chronic gastrointestinal conditions at risk of deficiencies: A proof-of-concept study. Clin Nutr 2022; 41:931-936. [DOI: 10.1016/j.clnu.2022.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 11/23/2022]
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Abstract
INTRODUCTION Selenium is an essential micronutrient that must be supplemented in infants and young children on exclusive parenteral nutrition (PN). We examined selenium status and clinical factors associated with a deficiency in infants on PN. METHODS This was a retrospective cohort study of pediatric patients receiving PN with routine monitoring of selenium status. Deficiency was diagnosed using age-based norms of plasma selenium status. Associations between selenium deficiency and the following clinical factors were examined: birthweight status: extremely low birthweight (ELBW) versus very low birthweight (VLBW) versus low birthweight (LBW) versus normal birthweight (NBW), serum albumin status, presence of cholestasis, and co-administration of enteral feeds. RESULTS A total of 42 infants were included with gestational age [median (interquartile range)] 28 weeks (25,34). The prevalence of selenium deficiency was 80% and the prevalence of albumin deficiency was 87.5%. The odds of selenium deficiency were higher in ELBW infants (odds ratio = 17.84, 95% confidence interval [4.04-78.72], P < 0.001) and VLBW infants (odds ratio = 16.26, 95% confidence interval [1.96-135.04], P < 0.001) compared to NBW infants. The odds of selenium deficiency were 5-fold higher in patients with low serum albumin (odds ratio = 5.33, 95% confidence interval [1.39-20.42], P = 0.015). There were no associations seen between selenium status and presence of cholestasis or co-administration of enteral feeds. CONCLUSION In this cohort of infants on PN therapy, the main clinical factors associated with selenium deficiency were presence of hypoalbuminemia and history of ELBW or VLBW. These findings support dual measurement of serum albumin and serum selenium to improve interpretation of selenium status.
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Gać P, Czerwińska K, Macek P, Jaremków A, Mazur G, Pawlas K, Poręba R. The importance of selenium and zinc deficiency in cardiovascular disorders. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 82:103553. [PMID: 33238203 DOI: 10.1016/j.etap.2020.103553] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 06/11/2023]
Abstract
Cardiovascular diseases often linked with lifestyle are among the main causes of death, especially in the elderly population. The role of trace elements in health and disease has been emphasized in multiple scientific research. Moreover, supplementation of trace elements to improve health is becoming increasingly popular. The following paper presents current views on the relationship between the concentration of trace elements such as selenium and zinc in the body, as well as morphology and function of the cardiovascular system. Research discussing the effect of selenium and zinc supplementation on the function of the heart and blood vessels was also reviewed. The relationship between selenium and zinc concentration and morphology and function of the cardiovascular system is equally unclear, and therefore there is currently no scientific evidence for its supplementation for preventing cardiovascular diseases. It seems justified to continue scientific research on this subject due to the small number of experimental studies available on the topic of selenium and zinc deficiency and their impact on the cardiovascular system.
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Affiliation(s)
- Paweł Gać
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland.
| | - Karolina Czerwińska
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Piotr Macek
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
| | - Aleksandra Jaremków
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Grzegorz Mazur
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
| | - Krystyna Pawlas
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, PL 50-368, Wrocław, Poland
| | - Rafał Poręba
- Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Borowska 213, PL 50-556, Wroclaw, Poland
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Tian FY, Everson TM, Lester B, Punshon T, Jackson BP, Hao K, Lesseur C, Chen J, Karagas MR, Marsit CJ. Selenium-associated DNA methylation modifications in placenta and neurobehavioral development of newborns: An epigenome-wide study of two U.S. birth cohorts. ENVIRONMENT INTERNATIONAL 2020; 137:105508. [PMID: 32007686 PMCID: PMC7722519 DOI: 10.1016/j.envint.2020.105508] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 12/05/2019] [Accepted: 01/17/2020] [Indexed: 05/02/2023]
Abstract
BACKGROUND/AIM Selenium (Se) levels in pregnancy have been linked to neurobehavioral development of the offspring. DNA methylation is a potential mechanism underlying the impacts of environmental exposures on fetal development; however, very few studies have been done elucidating the role of DNA methylation linking prenatal Se and child neurobehavior. We aimed to investigate the associations between placental Se concentration and epigenome-wide DNA methylation in two U.S. cohorts, and to assess the association between Se-related DNA methylation modifications and newborns' neurobehavior. METHODS We measured placental Se concentrations in 343 newborns enrolled in the New Hampshire Birth Cohort Study and in 141 newborns in the Rhode Island Child Health Study. Genome-wide placental DNA methylation was measured by HumanMethylation450 BeadChip, and newborn neurobehavioral development was assessed by the NICU Network Neurobehavioral Scales (NNNS). We meta-analyzed the associations between placental Se concentration and DNA methylation in each cohort, adjusting for covariates. We also fit multiple linear regression and ordinal logistic regression for methylation and newborn NNNS summary scores. RESULTS We identified five Se-related differentially methylated CpG sites. Among them was cg09674502 (GFI1), where selenium concentration was positively associated with methylation (β-coefficient = 1.11, FDR-adjusted p-value = 0.045), and where we observed that a one percent methylation level increase was associated with a 15% reduced odds of higher muscle tone in the arms, legs and trunk of newborns, (OR [95% Confidence Interval, CI] = 0.85 [0.77, 0.95]). We also observed for each interquartile range (IQR) increase in selenium concentration in the placenta, there was 1.76 times greater odds of higher hypotonicity (OR [95% CI] = 1.76 [1.12, 2.82]). CONCLUSIONS Placental selenium concentration was inversely associated with muscle tone of newborns, and hypermethylation of GFI1 could be a potential mechanism underlying this association.
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Affiliation(s)
- Fu-Ying Tian
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Todd M Everson
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Barry Lester
- Brown Center for the Study of Children at Risk, Women and Infants Hospital, Warren Alpert School of Medicine of Brown University, Providence, RI, USA
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Ke Hao
- Department of Genetics and Genome Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Corina Lesseur
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jia Chen
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, USA; Children's Environmental Health and Disease Prevention Research Center at Dartmouth, Dartmouth College, Lebanon, NH, USA
| | - Carmen J Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA; Children's Environmental Health and Disease Prevention Research Center at Dartmouth, Dartmouth College, Lebanon, NH, USA.
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Monitoring of Thyroid Malfunction and Therapies in Pregnancy and the Postpartum Period: A Systematic Updated Critical Review of the Literature. Ther Drug Monit 2020; 42:222-228. [DOI: 10.1097/ftd.0000000000000691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Aboutalebi A, Jouyban A, Chavoshi H, Movassaghpour Akbari A, Shaseb E, Sarbakhsh P, Ghaffary S. Protective Effects of Selenium in Patients with Beta-Thalassemia Major. PHARMACEUTICAL SCIENCES 2020. [DOI: 10.34172/ps.2019.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background
: Beta-thalassemia major patients require repeated blood transfusion which is associated with iron overload in different organs such as heart, liver, kidney and their related complications. In this study the effects of selenium in iron overload related complications of patients with beta-thalassemia major were assessed. Methods: In this clinical trial, 34 beta-thalassemia major patients over 12 years old were enrolled. Patients with severe renal failure, history of selenium consumption over the last three months, change of blood transfusion pattern, and any change of chelating agent were excluded from the study. For all patients, tablet of selenium 200 µg/day was administered for a month. Blood samples were taken at baseline and after one-month to assess the level of ferritin, total iron-binding capacity (TIBC), aspartate aminotransferase (AST), alanine aminotransferase (ALT), serum creatinine (Scr), selenium. Hair loss was assessed by questionnaire before and after intervention. Results: From 34 patients, 27 (79.4%) had deficient level of selenium at baseline. The selenium level was increased after intervention (p=0.005). The level of serum ALT and Scr decreased remarkably after one-month selenium consumption (p=0.007 for both). In addition, the AST level decreased remarkably after intervention (p=0.053). Severe hair loss profile has improved significantly after supplementation (p=0.004). Conclusion: One-month selenium consumption improved liver and kidney function related markers remarkably. Moreover, selenium improved hair profile and severe hair loss in thalassemia patients. Further studies are needed on the effect of selenium administration on liver and kidney function.
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Affiliation(s)
- Ajand Aboutalebi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Chavoshi
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Elnaz Shaseb
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parvin Sarbakhsh
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saba Ghaffary
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Bebars GM, Kamel BA, Allam E. Comparison between preterm and full term neonatal cord selenium in correlation to maternal serum selenium levels. EGYPTIAN PEDIATRIC ASSOCIATION GAZETTE 2018. [DOI: 10.1016/j.epag.2018.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Skröder H, Kippler M, De Loma J, Raqib R, Vahter M. Predictors of selenium biomarker kinetics in 4-9-year-old Bangladeshi children. ENVIRONMENT INTERNATIONAL 2018; 121:842-851. [PMID: 30342415 DOI: 10.1016/j.envint.2018.10.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Biomarker selenium concentrations vary greatly between studies. Concentrations in erythrocytes, urine, and hair vary even at similar plasma concentrations, suggesting that unknown factors influence the distribution of selenium between body compartments. OBJECTIVE To assess predictors of the different selenium biomarkers in children. DESIGN We used a mother-child cohort, nested in a population-based supplementation trial in rural Bangladesh (MINIMat), established for evaluation of arsenic toxicity. Selenium was measured in plasma (n = 223), erythrocytes, urine, and hair at 9 years (n = 395) and in erythrocytes and urine at 4.5 years (n = 259) using inductively coupled plasma mass spectrometry. We also measured concentrations of arsenic (all biospecimen) and cadmium (erythrocytes and urine). Genotyping for INMT, a methyltransferase involved in selenium metabolism, was performed using TaqMan probes. RESULTS At 9 years, the selenium concentrations ranged 51-139 μg/L in plasma, 128-281 μg/L in erythrocytes, 2.2-55 μg/L in urine, and 258-723 μg/kg in hair. Correlations (rS) between biomarkers ranged 0.12-0.37, and were strongest between blood compartments and between erythrocytes and hair (long-term markers). In multivariable-adjusted linear regression analyses, plasma selenium differed by sampling season (highest in food-secure pre-monsoon season) and was inversely associated with plasma arsenic (range < 0.0080-20 μg/L; B = -1.1, 95% CI: -1.8, -0.41). In contrast, erythrocyte selenium was positively associated with erythrocyte arsenic (range 0.95-50 μg/L; B = 0.58, 95% CI: 0.26, 0.91) and inversely associated with erythrocyte cadmium (range 0.27-3.1 μg/L; B = -12, 95% CI: -17, -6.9). These associations were similar at 4.5 years. Only selenium in hair and urine were influenced by INMT polymorphisms. Finally, chronic malnutrition seemed to increase selenium retention, measured as the ratio plasma/urinary selenium. CONCLUSIONS Selenium biomarkers seem to be influenced by malnutrition, genetics, and exposure to metal pro-oxidants. This might affect the evaluation of deficiency/sufficiency, normally assessed by selenium in plasma/serum.
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Affiliation(s)
- Helena Skröder
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - Maria Kippler
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - Jessica De Loma
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - Rubhana Raqib
- International Center for Diarrheal Disease Research, GPO Box 128, Dhaka 1000, Bangladesh
| | - Marie Vahter
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden.
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Gashu D, Marquis GS, Bougma K, Stoecker BJ. Selenium inadequacy hampers thyroid response of young children after iodine repletion. J Trace Elem Med Biol 2018; 50:291-295. [PMID: 30262294 DOI: 10.1016/j.jtemb.2018.07.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 11/26/2022]
Abstract
Selenium (Se) is an integral component of iodothyronine deiodinase, glutathione peroxidase and thioredoxin reductase enzymes and thus is important for normal thyroid function. This study investigated the influence of Se inadequacy on thyroid response of iodine-replete young children. Serum thyroxine (T4), triiodothyronine (T3), thyroglobulin (Tg), thyroid stimulating hormone (TSH), and Se were analyzed in 54-60 mo old children (n = 628) from the Amhara region of Ethiopia before salt iodization was commenced; analyses were repeated (n = 555) 15 mo after iodized salt became available. Iodized salt coverage increased from 12.2% to 91.6% of households. Median urinary iodine concentration (UIC) among children increased from 9 μg/l to 167 μg/l (p < 0.001). In addition, all thyroid indices except T3 showed significant improvement (p < 0.05). Nearly, half of the study children (49.1%) had Se inadequacy (serum Se < 70 μg/l). Serum Se was significantly correlated with T3 (r = 0.38, p < 0.001), T4 (r = 0.15, p < 0.001), TSH (r=-0.205, p < 0.001) and Tg (r= -0.11, p < 0.01) concentrations 15 mo after iodine repletion; baseline serum Se and T4(r= -0.22, p < 0.01) were inversely correlated. Despite adequate iodine status, children with low serum Se had lower serum T4 (p = 0.003) and T3(p < 0.001) but higher TSH concentration (p = 0.003). In the partial least square regression model, Se was among the latent variables significantly explaining T4 and T3. Results of the present study suggest that Se inadequacy negatively affects the thyroid metabolism of iodine-replete children and may present a substantial public health concern thus emphasize the need to consider correction of Se status for normal thyroid function as well as for benefits from its diverse biological roles.
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Affiliation(s)
- Dawd Gashu
- Center for Food Science and Nutrition, Addis Ababa University, Ethiopia.
| | - Grace S Marquis
- School of Dietetics and Human Nutrition, McGill University, Canada
| | - Karim Bougma
- School of Dietetics and Human Nutrition, McGill University, Canada
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El-Masry HMA, Sadek AA, Hassan MH, Ameen HH, Ahmed HA. Metabolic profile of oxidative stress and trace elements in febrile seizures among children. Metab Brain Dis 2018; 33:1509-1515. [PMID: 29946956 DOI: 10.1007/s11011-018-0258-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/28/2018] [Indexed: 01/01/2023]
Abstract
Febrile seizures (FS) are frequent convulsive disorders, occurring in infants and young children. The present study aims to assess and compare the serum levels of oxidative stress markers and some essential trace minerals in FS with normal or abnormal EEG and evaluate the effect of antioxidant therapy on the clinical outcome. This study has been carried out on 80 children with FS (40 with simple FS and 40 with complex FS) and 40 febrile children without seizures. Clinical and EEG findings were recorded for the included patients. Biochemical assays of serum nitric oxide (NO), malondialdehyde (MDA), superoxide dismutase (SOD), copper (Cu), zinc (Zn) and selenium (Se), using colorimetric methods, were measured in the studied groups. The overall results showed an increased values of NO, MDA and Cu with decreased values of SOD, Zn and Se in patients with FS (simple and complex) in comparison with febrile children without seizures (p < 0.05 for all). Additionally, NO and MDA was increased in complex FS patients with EEG abnormalities in comparison with complex FS with normal EEG findings (p < 0.05); NO and MDA were also significantly decreased after valproate therapy in complex FS patients (p < 0.05 for all). In conclusions, oxidative stress, decreased Zn and Se with increased Cu may play a role in FS. Valproate improves the oxidative stress status in complex FS.
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Affiliation(s)
- Hosny M A El-Masry
- Department of Pediatrics, Faculty of Medicine Al-Azhar University (Assiut Branch), Assiut, Egypt
| | - Abdelrahim A Sadek
- Pediatric Neurology Unit, Department of Pediatrics, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Mohammed H Hassan
- Medical Biochemistry and Molecular Biology Department, Qena Faculty of Medicine, South Valley University, Qena, Egypt.
| | - Hesham H Ameen
- Clinical Pathology Department, Faculty of Medicine Al-Azhar University (Assiut Branch), Assiut, Egypt
| | - Hosny A Ahmed
- Department of Pediatrics, Faculty of Medicine Al-Azhar University (Assiut Branch), Assiut, Egypt
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Impact of Maternal Selenium Status on Infant Outcome during the First 6 Months of Life. Nutrients 2017; 9:nu9050486. [PMID: 28492511 PMCID: PMC5452216 DOI: 10.3390/nu9050486] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/04/2017] [Accepted: 05/05/2017] [Indexed: 12/25/2022] Open
Abstract
Pregnant women and infants are at risk for selenium deficiency, which is known to have negative effects on immune and brain function. We have investigated selenium levels in 158 healthy never-pregnant women and in 114 pregnant and lactating women and their infants at age 6 months and related this to clinical outcomes during the first 6 months of life. Neurodevelopment was assessed with the parental questionnaire Ages and Stages (ASQ) at 6 months. A maternal selenium level ≤0.90 µmol/L in pregnancy week 18 was negatively related to infant neurodevelopment at 6 months (B = -20, p = 0.01), whereas a selenium level ≤0.78 µmol/L in pregnancy week 36 was associated with an increased risk (odds ratio 4.8) of having an infant infection during the first 6 weeks of life. A low maternal selenium status in pregnancy was found to be associated with an increased risk of infant infection during the first 6 weeks of life and a lower psychomotor score at 6 months. We suggest a cutoff for maternal serum selenium deficiency of 0.90 µmol/L in pregnancy week 18 and 0.78 µmol/L in pregnancy week 36. This should be reevaluated in an intervention study.
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Pires LV, Siviero-Miachon AA, Spinola-Castro AM, Pimentel JAC, Nishimura LS, Maia CSC, Cozzolino SMF. Selenium Status in Patients with Turner Syndrome: a Biochemical Assessment Related with Body Composition. Biol Trace Elem Res 2017; 176:217-224. [PMID: 27565799 DOI: 10.1007/s12011-016-0831-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 08/19/2016] [Indexed: 10/21/2022]
Abstract
Studies about selenium status in patients with Turner syndrome (TS) are non-existent in the literature. The aim of this study was to evaluate selenium status in patients with TS, while considering the different ages of the studied population and the relation with body composition. In total, 33 patients with TS were evaluated and grouped according to their developmental stages (children, adolescents, and adults). Selenium concentrations in their plasma, erythrocytes, urine, and nails were determined by using hydride generation atomic absorption spectrometry and erythrocyte glutathione peroxidase activity were measured by using Randox commercial kits. Additionally, height, weight, body fat percentage, waist circumference, and waist-height ratio were measured to characterize the patients. No differences in the selenium concentrations in the plasma, erythrocyte, urine, and nails or in the glutathione peroxidase activity were observed among the age groups (p > 0.05). The evaluated selenium levels were less than the established normal ones. The patients with larger waist circumference, body fat percentage, body mass index, and waist-height ratio showed lower glutathione peroxidase enzyme activity (p = 0.023). The present study shows that most patients with TS are deficient in selenium and that those with a greater accumulation of body fat have a lower GPx activity.
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Affiliation(s)
- Liliane Viana Pires
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, n°580, Cidade Universitária, São Paulo, SP, 05508-900, Brazil.
| | | | - Angela Maria Spinola-Castro
- Division of Pediatric Endocrinology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - José Alexandre Coelho Pimentel
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, n°580, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - Luciana Sigueta Nishimura
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, n°580, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | | | - Silvia Maria Franciscato Cozzolino
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, n°580, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
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Kobal AB, Snoj Tratnik J, Mazej D, Fajon V, Gibičar D, Miklavčič A, Kocman D, Kotnik J, Sešek Briški A, Osredkar J, Krsnik M, Prezelj M, Knap Č, Križaj B, Liang L, Horvat M. Exposure to mercury in susceptible population groups living in the former mercury mining town of Idrija, Slovenia. ENVIRONMENTAL RESEARCH 2017; 152:434-445. [PMID: 27488273 DOI: 10.1016/j.envres.2016.06.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 06/06/2023]
Abstract
500 years of mercury (Hg) mining in the town of Idrija has caused severe pollution in Idrija and its surroundings. Following the closure of the mine in 1995, the environment remains contaminated with Hg. Sources of elemental-, inorganic- and methyl Hg exposure were identified, potential environmental level of exposure to Hg was evaluated and actual internal exposure to Hg was assessed in selected susceptible population groups comprising school-age children and pregnant women living in Idrija and in control groups from rural and urban environments. The study of pregnant women (n=31) was conducted between 2003 and 2008, and the study of school-age children (n=176) in 2008. Potential interaction of Hg with selenium (Se) in plasma was assessed in both study populations, while in pregnant women antioxidative enzyme activity (glutathione peroxidase, superoxide dismutase and catalase) in erythrocytes of maternal and cord blood was also assessed. Actual exposure to Hg as indicated by levels of Hg in children's blood (geometric mean (GM) 0.92µg/L), mother's blood (GM 1.86µg/L), children's urine (GM 1.08µg/g crea.), mother's urine (GM 2.51µg/L), children's hair (GM 241ng/g) and mother's hair (GM 251ng/g) was higher in the two study groups from Idrija than in the control groups from rural areas, but was still at the level of a "normal" population and reflects mainly exposure to elemental Hg (Hg°) from dental amalgam and, to a certain extent atmospheric Hg°. Furthermore, the internal doses of Hg received during pregnancy did not decrease the bioavailability of Se. Based on observation in children, the increase in Se protein expression is suggested to be a consequence of moderately elevated exposure to Hg°. The observed changes in activity of antioxidative enzymes, as biomarkers of oxidative stress, appear to be mainly associated with pregnancy per se and not with an increased exposure to Hg. In view of the continuing increased potential for Hg exposure and the low number of pregnant women studied, the results warrant a further longitudinal study of a larger group of pregnant women residing in the area of the former mercury mine.
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Affiliation(s)
- Alfred B Kobal
- Ex-Department of Occupational Health, Idrija Mercury Mine, Arkova 43, 5280 Idrija, Slovenia
| | - Janja Snoj Tratnik
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia
| | - Darja Mazej
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Vesna Fajon
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Darija Gibičar
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Ana Miklavčič
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - David Kocman
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Jože Kotnik
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Alenka Sešek Briški
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia
| | - Joško Osredkar
- University Medical Centre Ljubljana, Institute for Clinical Chemistry and Biochemistry, University in Ljubljana, Slovenia
| | - Mladen Krsnik
- University Medical Centre Ljubljana, Institute for Clinical Chemistry and Biochemistry, University in Ljubljana, Slovenia
| | - Marija Prezelj
- University Medical Centre Ljubljana, Institute for Clinical Chemistry and Biochemistry, University in Ljubljana, Slovenia
| | - Črtomir Knap
- Department of Gynecology, Idrija Health Service, Otona Župančiča 3, 5280 Idrija, Slovenia
| | - Bojana Križaj
- Laboratory Department, Idrija Health Service, Otona Župančiča 3, 5280 Idrija, Slovenia
| | - Lian Liang
- Cebam Analytical, Inc., 18804 North Creek Parkway, Bothell, WA 98011, USA
| | - Milena Horvat
- 'Jožef Stefan' Institute, Department of Environmental Sciences, Ljubljana, Slovenia; 'Jožef Stefan' International Postgraduate School, Ljubljana, Slovenia.
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Liu X, Piao J, Li M, Zhang Y, Yun C, Yang C, Yang X. Assessment of selenium nutritional status of school-age children from rural areas of China in 2002 and 2012. Eur J Clin Nutr 2015; 70:405-8. [DOI: 10.1038/ejcn.2015.194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 10/01/2015] [Accepted: 10/06/2015] [Indexed: 11/09/2022]
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Freitas RGBON, Nogueira RJN, Antonio MARGM, Barros-Filho ADA, Hessel G. Selenium deficiency and the effects of supplementation on preterm infants. ACTA ACUST UNITED AC 2015; 32:126-35. [PMID: 24676200 PMCID: PMC4183006 DOI: 10.1590/s0103-05822014000100019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/01/2013] [Indexed: 12/21/2022]
Abstract
OBJECTIVE This study aimed to review the literature about blood concentrations of selenium associated with gestational age, feeding, supplementation and related clinical features in preterm infants. DATA SOURCES Systematic review in the following databases: MEDLINE, PubMed, Google academics, SciELO. org, ScienceDirect (Elsevier) and CINAHL-Plus with Full Text (EBSCO). Articles published up to January 2013 with the keywords "selenium deficiency", "selenium supplementation", "neonates", "infants", "newborn" and "preterm infants" were selected. DATA SYNTHESIS The studies reported that low blood selenium levels are associated with increased risk of respiratory diseases. Preterm infants, especially with low birth weight, presented lower selenium levels. Selenium deficiency has also been associated with the use of oral infant formula, enteral and parenteral nutrition (with or without selenium addition). The optimal dose and length of selenium supplementation is not well-established, since they are based only on age group and selenium ingestion by breastfed children. Furthermore, the clinical status of the infant affected by conditions that may increase oxidative stress, and consequently, selenium requirements is not taken into account. CONCLUSIONS Prematurity and low birth weight can contribute to low blood selenium in premature infants. Selenium supplementation seems to minimize or prevent clinical complications caused by prematurity.
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Affiliation(s)
| | | | | | | | - Gabriel Hessel
- Faculdade de Ciencias Medicas, Unicamp, Campinas, SP, Brasil
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31
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Bishop DP, Hare DJ, Fryer F, Taudte RV, Cardoso BR, Cole N, Doble PA. Determination of selenium in serum in the presence of gadolinium with ICP-QQQ-MS. Analyst 2015; 140:2842-6. [DOI: 10.1039/c4an02283a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Triple–quadrupole ICP-MS using O2mass-shift technology is superior for removing gadolinium interference on selenium in serum.
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Affiliation(s)
- David P. Bishop
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
| | - Dominic J. Hare
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
- The Florey Institute of Neuroscience and Mental Health
| | | | - Regina V. Taudte
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
| | - Barbara R. Cardoso
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville
- Australia
- Faculty of Pharmaceutical Sciences
| | - Nerida Cole
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
| | - Philip A. Doble
- Elemental Bio-imaging Facility
- University of Technology Sydney
- Broadway
- Australia
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Błażewicz A, Klatka M, Astel A, Korona-Glowniak I, Dolliver W, Szwerc W, Kocjan R. Serum and urinary selenium levels in obese children: a cross-sectional study. J Trace Elem Med Biol 2015; 29:116-22. [PMID: 25194955 DOI: 10.1016/j.jtemb.2014.07.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/18/2014] [Accepted: 07/25/2014] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To determine serum and urinary selenium (Se) levels in children with and without obesity, and to assess if Se influences the risk of obesity. SUBJECTS AND METHODS High-resolution-continuum source-atomic absorption spectrometry (HR-CS-AAS) was used to determine the content of Se in 80 children (age 6-17; 40 boys, 40 girls). Correlations between variables were tested with the use of Spearman's correlation coefficient. U Mann-Whitney test was applied to assess the difference of Se contents in samples. Measured metabolic risk factors (blood pressure, glucose level, triglycerides (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and total cholesterol), age, gender, and BMI were correlated. Logistic regression models were fitted to identify predictors of obesity interacting with selenium content in serum and urine, separately. RESULTS Obese children, regardless of gender, had lower Se content. Se level in serum (p=0.001, OR 0.74, 95%CI 0.62-0.88) and total cholesterol (p=0.001, OR 1.19, 95%CI 1.08-1.31) were the independent factors significantly influencing the risk of obesity in children. Two separate models were observed for Se in urine: (i) Se level (p<0. 0001, OR 0.70, 95%CI 0.58-0.84) and glucose level (p<0.0001, OR 1.22, 95%CI 1.10-1.35), and (ii) Se level (p=0.002, OR 0.60 95%CI 0.43-0.83) and total cholesterol level (p=0.003, OR 1.16, 95%CI 1.05-1.28). CONCLUSION The current study suggests a possible role of Se in obesity. Further research needs to be performed to check if obese children are an at-risk group for Se deficiency.
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Affiliation(s)
- Anna Błażewicz
- Department of Analytical Chemistry, Medical University of Lublin, Poland.
| | - Maria Klatka
- Department of Pediatric Endocrinology and Diabetology, Medical University of Lublin, Poland
| | - Aleksander Astel
- Pomeranian University, Biology and Environmental Protection Institute, Environmental Chemistry Research Unit, Słupsk, Poland
| | | | - Wojciech Dolliver
- Department of Analytical Chemistry, Medical University of Lublin, Poland
| | - Wojciech Szwerc
- Department of Analytical Chemistry, Medical University of Lublin, Poland
| | - Ryszard Kocjan
- Department of Analytical Chemistry, Medical University of Lublin, Poland
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Vieira Rocha A, Rita Cardoso B, Cominetti C, Barofaldi Bueno R, de Bortoli MC, Farias LA, Teixeira Favaro DI, Aranha Camargo LM, Franciscato Cozzolino SM. Selenium status and hair mercury levels in riverine children from Rondônia, Amazonia. Nutrition 2014; 30:1318-23. [DOI: 10.1016/j.nut.2014.03.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/28/2014] [Accepted: 03/17/2014] [Indexed: 01/21/2023]
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Leite HP, Nogueira PCK, Iglesias SBDO, de Oliveira SV, Sarni ROS. Increased plasma selenium is associated with better outcomes in children with systemic inflammation. Nutrition 2014; 31:485-90. [PMID: 25701339 DOI: 10.1016/j.nut.2014.09.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 09/03/2014] [Accepted: 09/07/2014] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The aim of this study was to assess the effects of changes in plasma selenium on the outcome of critically ill children. METHODS Plasma selenium was prospectively measured in 99 children with acute systemic inflammation. The exposure variables were selenium level on admission and on day 5 of stay in the intensive care unit (ICU) and the difference in selenium concentrations between day 5 post-admission and the ICU admission (delta selenium). Selenium was given only as part of enteral diets. Age, malnutrition, red cell glutathione peroxidase-1 activity, serum C-reactive protein, Pediatric Index of Mortality 2, and Pediatric Logistic Organ Dysfunction scores were analyzed as covariates. The outcome variables were ventilator-free days, ICU-free days, and 28-d mortality. RESULTS Plasma selenium concentrations increased from admission (median 23.4 μg/L, interquartile range 12.0-30.8) to day 5 (median 25.1 μg/L, interquartile range 16.0-39.0; P = 0.018). After adjustment for confounding factors, a delta selenium increase of 10 μg/L was associated with reductions in ventilator days (1.3 d; 95% confidence interval [CI], 0.2-2.3; P = 0.017) and ICU days (1.4 d; 95% CI, 0.5-2.3; P < 0.01). Delta selenium >0 was associated with decreased 28-d mortality on a univariate model (odds ratio, 0.67; 95% CI, 0.46-0.97; P = 0.036). The mean daily selenium intake (6.82 μg; range 0-48.66 μg) was correlated with the increase in selenium concentrations on day 5. CONCLUSIONS An increase in plasma selenium is independently associated with shorter times of ventilation and ICU stay in children with systemic inflammation. These findings raise the hypothesis that selenium supplementation could be beneficial in children with critical illnesses.
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Affiliation(s)
- Heitor Pons Leite
- Discipline of Nutrition and Metabolism, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil.
| | | | | | - Susyane Vieira de Oliveira
- Discipline of Nutrition and Metabolism, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
| | - Roseli Oselka Saccardo Sarni
- Discipline of Allergy and Immunology, Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil
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Etani Y, Nishimoto Y, Kawamoto K, Yamada H, Shouji Y, Kawahara H, Ida S. Selenium deficiency in children and adolescents nourished by parenteral nutrition and/or selenium-deficient enteral formula. J Trace Elem Med Biol 2014; 28:409-13. [PMID: 25294396 DOI: 10.1016/j.jtemb.2014.09.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The authors analyzed serum selenium levels of 95 children and adolescents with intestinal dysfunction and/or neurological disabilities [age range: 7 months-20 years; mean±standard deviation (SD): 8.0±5.3 years] who received parenteral nutrition (PN) and/or enteral nutrition (EN) with either reduced or no selenium doses for more than 3 months. Twenty-eight patients (29%) showed serum selenium levels below 4.0μg/dL. Five patients whose serum selenium levels were below 2μg/dL presented various clinical manifestations, including hair browning (n=5), macrocythemia (n=4), nail whitening (n=3) and cardiac dysfunction (n=1). None of these 5 patients were nourished through ordinary diets. Three of these patients were nourished through selenium-free enteral nutritional products, 1 through selenium-deficient PN and 1 through PN and a formula with reduced selenium. After selenium supplement therapy for 1 year, all 5 patients exhibited improvement in their serum selenium levels and clinical features of selenium deficiency. It is important to be cautious about secondary selenium deficiency in children and adolescents nourished only through EN/PN without an adequate dose of selenium.
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Affiliation(s)
- Yuri Etani
- Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan.
| | - Yukiko Nishimoto
- Department of Nutrition, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Kouji Kawamoto
- Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Hiroyuki Yamada
- Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Yasuko Shouji
- Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Hisayoshi Kawahara
- Department of Pediatric Surgery, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
| | - Shinobu Ida
- Department of Pediatric Gastroenterology, Nutrition and Endocrinology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
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Al-Saleh I, Al-Rouqi R, Obsum CA, Shinwari N, Mashhour A, Billedo G, Al-Sarraj Y, Rabbah A. Mercury (Hg) and oxidative stress status in healthy mothers and its effect on birth anthropometric measures. Int J Hyg Environ Health 2014; 217:567-85. [DOI: 10.1016/j.ijheh.2013.11.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 11/07/2013] [Accepted: 11/14/2013] [Indexed: 12/31/2022]
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37
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Flax VL, Bentley ME, Combs GF, Chasela CS, Kayira D, Tegha G, Kamwendo D, Daza EJ, Fokar A, Kourtis AP, Jamieson DJ, van der Horst CM, Adair LS. Plasma and breast-milk selenium in HIV-infected Malawian mothers are positively associated with infant selenium status but are not associated with maternal supplementation: results of the Breastfeeding, Antiretrovirals, and Nutrition study. Am J Clin Nutr 2014; 99:950-6. [PMID: 24500152 PMCID: PMC3953887 DOI: 10.3945/ajcn.113.073833] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Selenium is found in soils and is essential for human antioxidant defense and immune function. In Malawi, low soil selenium and dietary intakes coupled with low plasma selenium concentrations in HIV infection could have negative consequences for the health of HIV-infected mothers and their exclusively breastfed infants. OBJECTIVE We tested the effects of lipid-based nutrient supplements (LNS) that contained 1.3 times the Recommended Dietary Allowance of sodium selenite and antiretroviral drugs (ARV) on maternal plasma and breast-milk selenium concentrations. DESIGN HIV-infected Malawian mothers in the Breastfeeding, Antiretrovirals, and Nutrition study were randomly assigned at delivery to receive: LNS, ARV, LNS and ARV, or a control. In a subsample of 526 mothers and their uninfected infants, we measured plasma and breast-milk selenium concentrations at 2 or 6 (depending on the availability of infant samples) and 24 wk postpartum. RESULTS Overall, mean (± SD) maternal (range: 81.2 ± 20.4 to 86.2 ± 19.9 μg/L) and infant (55.6 ± 16.3 to 61.0 ± 15.4 μg/L) plasma selenium concentrations increased, whereas breast-milk selenium concentrations declined (14.3 ± 11.5 to 9.8 ± 7.3 μg/L) from 2 or 6 to 24 wk postpartum (all P < 0.001). Compared with the highest baseline selenium tertile, low and middle tertiles were positively associated with a change in maternal plasma or breast-milk selenium from 2 or 6 to 24 wk postpartum (both P < 0.001). With the use of linear regression, we showed that LNS that contained selenium and ARV were not associated with changes in maternal plasma and breast-milk selenium, but maternal selenium concentrations were positively associated with infant plasma selenium at 2 or 6 and 24 wk postpartum (P < 0.001) regardless of the study arm. CONCLUSIONS Selenite supplementation of HIV-infected Malawian women was not associated with a change in their plasma or breast-milk selenium concentrations. Future research should examine effects of more readily incorporated forms of selenium (ie, selenomethionine) in HIV-infected breastfeeding women.
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Affiliation(s)
- Valerie L Flax
- Carolina Population Center (VLF, MEB, EJD, and LSA), Departments of Nutrition (VLF, MEB, and LSA) and Biostatistics (EJD), and Division of Infectious Diseases, School of Medicine (AF and CMvdH), University of North Carolina, Chapel Hill, NC; the USDA-Agriculture Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND (GFC); the University of North Carolina Project, Lilongwe, Malawi (CSC, D Kayira, GT, and D Kamwendo); the Division of Epidemiology and Biostatistics, School of Public Health, University of Witwatersrand, Parktown, South Africa (CSC); and the US CDC, Atlanta, GA (APK and DJJ)
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Scientific Opinion on nutrient requirements and dietary intakes of infants and young children in the European Union. EFSA J 2013. [DOI: 10.2903/j.efsa.2013.3408] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Jonklaas J, Danielsen M, Wang H. A pilot study of serum selenium, vitamin D, and thyrotropin concentrations in patients with thyroid cancer. Thyroid 2013; 23:1079-86. [PMID: 23350941 PMCID: PMC3770246 DOI: 10.1089/thy.2012.0548] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Low serum selenium concentrations have been associated with a diagnosis of differentiated thyroid cancer in small studies in selenium deficient areas. We conducted a pilot study to explore associations between selenium concentrations and the diagnosis of thyroid cancer in an area of selenium sufficiency in the United States. As low 25-hydroxyvitamin D concentrations have been associated with several malignancies, we also examined 25-hydroxyvitamin D levels. METHODS This study was designed as a pilot study of prediagnostic selenium and 25-hydroxyvitamin D concentrations. We identified 65 euthyroid patients at an academic medical center who were scheduled for thyroidectomy for thyroid cancer, suspicion of thyroid cancer, or nodular disease. Blood samples were obtained two to four weeks prior to thyroidectomy. Samples were analyzed for thyrotropin (TSH), free thyroxine, total triiodothyronine, selenium, and 25 hydroxyvitamin D levels. Concentrations of these analytes were correlated with whether the patient was diagnosed with benign or malignant disease following their thyroidectomy. In patients with thyroid cancer, the concentrations of selenium and 25-hydroxyvitamin D were correlated with various prognostic features. RESULTS Although selenium concentrations were not significantly lower in patients with thyroid cancer, serum selenium concentrations were inversely correlated with disease stage (p = 0.011). There were no associations between vitamin D concentration and a diagnosis of thyroid cancer. Within the thyroid cancer patients, vitamin D concentrations were not associated with disease stage or any other prognostic features. In contrast, TSH concentrations were significantly higher in patients with thyroid cancer, and were positively correlated with the number of involved lymph nodes (p = 0.011) and disease stage (p = 0.022). CONCLUSION These data confirm the association between serum TSH and advanced thyroid cancer. In addition, they also suggest a potential association between selenium concentrations and higher thyroid cancer stage. No such association was seen for 25-hydroxyvitamin D concentrations. Larger prospective studies will be required to confirm this association. If confirmed, future studies would need to determine if the association is causative in nature. If causation exists, it seems likely that selenium concentrations would influence thyroid cancer development via an independent mechanism from that of TSH.
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Affiliation(s)
- Jacqueline Jonklaas
- 1 Division of Endocrinology, Georgetown University Medical Center , Washington, District of Columbia
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Procházková D, Jarkovský J, Vinohradská H, Konečná P, Machačová L, Doležel Z. Controlled diet in phenylketonuria and hyperphenylalaninemia may cause serum selenium deficiency in adult patients: the Czech experience. Biol Trace Elem Res 2013; 154:178-84. [PMID: 23771645 DOI: 10.1007/s12011-013-9724-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 06/03/2013] [Indexed: 10/26/2022]
Abstract
Phenylketonuria is an inherited disorder of metabolism of the amino acid phenylalanine caused by a deficit of the enzyme phenylalanine hydroxylase. It is treated with a low-protein diet containing a low content of phenylalanine to prevent mental affection of the patient. Because of the restricted intake of high-biologic-value protein, patients with phenylketonuria may have lower than normal serum concentrations of pre-albumin, selenium, zinc and iron. The objective of the present study was to assess the compliance of our phenylketonuric (PKU) and hyperphenylalaninemic (HPA) patients; to determine the concentration of serum pre-albumin, selenium, zinc and iron to discover the potential correlation between the amount of proteins in food and their metabolic control. We studied 174 patients of which 113 were children (age 1-18), 60 with PKU and 53 with HPA and 61 were adults (age 18-42), 51 with PKU and 10 with HPA. We did not prove a statistically significant difference in the concentration of serum pre-albumin, zinc and iron among the respective groups. We proved statistically significant difference in serum selenium concentrations of adult PKU and HPA patients (p = 0.006; Mann-Whitney U test). These results suggest that controlled low-protein diet in phenylketonuria and hyperphenylalaninemia may cause serum selenium deficiency in adult patients.
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Affiliation(s)
- Dagmar Procházková
- Department of Pediatrics, University Hospital Brno, Medical Faculty of Masaryk University Brno, Cernopolni 9, Brno 62500, Czech Republic.
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George CM, Gamble M, Slavkovich V, Levy D, Ahmed A, Ahsan H, Graziano J. A cross-sectional study of the impact of blood selenium on blood and urinary arsenic concentrations in Bangladesh. Environ Health 2013; 12:52. [PMID: 23816141 PMCID: PMC3724573 DOI: 10.1186/1476-069x-12-52] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/21/2013] [Indexed: 05/04/2023]
Abstract
BACKGROUND Arsenic can naturally occur in the groundwater without an anthropogenic source of contamination. In Bangladesh over 50 million people are exposed to naturally occurring arsenic concentrations exceeding the World Health Organization's guideline of 10 μg/L. Selenium and arsenic have been shown to facilitate the excretion of each other in bile. Recent evidence suggests that selenium may play a role in arsenic elimination by forming a selenium-arsenic conjugate in the liver before excretion into the bile. METHODS A cross-sectional study of 1601 adults and 287 children was conducted to assess the relationship between blood selenium and urinary and blood arsenic in a study population residing in a moderately arsenic-contaminated rural area in Bangladesh. RESULTS The results of this study indicate a statistically significant inverse relationship between blood selenium and urinary arsenic concentrations in both adult and pediatric populations in rural Bangladesh after adjustment for age, sex, Body Mass Index, plasma folate and B12 (in children), and ever smoking and current betel nut use (in adults). In addition, there appears to be a statistically significant inverse relationship between blood selenium and blood arsenic in children. CONCLUSIONS Our results suggest that selenium is inversely associated with biomarkers of arsenic burden in both adults and children. These findings support the hypothesis that Se facilitates the biliary elimination of As, possibly via the putative formation of a Se-As conjugate using a glutathione complex. However, laboratory based studies are needed to provide further evidence to elucidate the presence of Se-As conjugate and its role in arsenic elimination in humans.
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Affiliation(s)
- Christine Marie George
- Department of International Health, Program in Global Disease Epidemiology and Control, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe Street, Room W5535, Baltimore, MD E5535, USA
| | - Mary Gamble
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 W. 168th St, Rosenfield Bldg, New York 10032, USA
| | - Vesna Slavkovich
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, Trace Metals Core, New York 10032, USA
| | - Diane Levy
- Department of Biostatistics, Mailman School of Public Health, Columbia University, 722 W. 168th St, Rosenfield Bldg, New York, New York, USA
| | - Alauddin Ahmed
- University of Chicago Arsenic & Health Research in Bangladesh, Dhaka, Bangladesh
| | - Habibul Ahsan
- Department of Health Studies, The University of Chicago Biological Sciences, 5841 S. Maryland Ave., MC 2007, Chicago, Illinois 60637, USA
| | - Joseph Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 W. 168th St, Rosenfield Bldg, New York 10032, USA
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Navia B, Ortega RM, Perea JM, Aparicio A, López-Sobaler AM, Rodríguez-Rodríguez E. Selenium status in a group of schoolchildren from the region of Madrid, Spain. J Hum Nutr Diet 2013; 27 Suppl 2:239-46. [PMID: 23679102 DOI: 10.1111/jhn.12126] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND To assess the selenium status of a group of schoolchildren from the Region of Madrid, Spain. METHODS Study subjects comprised 483 children (216 boys and 267 girls) aged between 8 and 13 years. Selenium intake was determined using a 3-day food record. The foods consumed were transformed into energy and nutrients, and the selenium intake was compared with that recommended. Serum selenium levels were also recorded. RESULTS Mean (SD) selenium intake [91.0 (25.2) μg day(-1) ] was above the recommended level in 99.4% of subjects; the main dietary sources were cereals, meats, fish and milk products. The serum selenium concentration [mean (SD) 71.1 (14.4) μg L(-1) ], however, was <60 μg L(-1) in 13.9% of subjects, and <45 μg L(-1) in 5.6%. The serum selenium concentration correlated with the selenium intake (r = 0.169; P < 0.05). Children with a serum selenium concentration of <75 μg L(-1) had significantly smaller selenium intakes than those with a serum concentration of ≥75 μg L(-1) . CONCLUSIONS Although selenium intake was generally above that recommended, the serum selenium concentration of the children could be improved. This could be achieved by increasing the relative consumption of cereals and other selenium rich foods such as fish.
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Affiliation(s)
- B Navia
- Departamento de Nutrición, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
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Kim YA, Ha EJ, Jhang WK, Park SJ. Low Blood Selenium Concentrations in Critically Ill Children with Systemic Inflammatory Response Syndrome and Respiratory Dysfunction. Korean J Crit Care Med 2013. [DOI: 10.4266/kjccm.2013.28.2.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Young A Kim
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
| | - Eun-Ju Ha
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
| | - Won Kyoung Jhang
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
| | - Seong Jong Park
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea
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van Oeffelen AAM, Bekkers MBM, Smit HA, Kerkhof M, Koppelman GH, Haveman-Nies A, van der A DL, Jansen EHJM, Wijga AH. Serum micronutrient concentrations and childhood asthma: the PIAMA birth cohort study. Pediatr Allergy Immunol 2011; 22:784-93. [PMID: 21929603 DOI: 10.1111/j.1399-3038.2011.01190.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Research suggests an influence of micronutrients on childhood asthma. So far, evidence mainly originates from cross-sectional studies using nutrient intake data, which is not an accurate measure of nutrient status. This study aimed to investigate the cross-sectional and prospective associations between serum concentrations of magnesium, vitamin D, selenium, and zinc and prevalence of (severe) asthma, atopy, and bronchial hyperresponsiveness (BHR) in childhood. METHODS In the Prevention and Incidence of Asthma and Mite Allergy birth cohort study, serum nutrient concentrations were available for a 4-yr-old subgroup (n = 372) and for a different 8-yr-old subgroup (n = 328). Yearly questionnaires inquired about asthma prevalence until 8 yr of age. Allergic sensitization was measured at 4 and 8 yr of age; BHR was measured at 8 yr of age. Data were analyzed with logistic regression and generalized estimating equations models. RESULTS There was a consistent (non-significant) inverse association between serum magnesium concentrations and asthma prevalence. Serum vitamin D concentrations measured at age 4 were inversely associated with asthma at ages 4-8 [e.g., cross-sectional association between vitamin D tertile 3 vs. 1 and severe asthma: odds ratio (OR): 0.49, 95% confidence interval (CI): 0.25-0.95], whereas vitamin D measured at age 8 was positively associated with asthma at age 8 (e.g., cross-sectional association between vitamin D tertile 3 vs. 1 and severe asthma: OR: 2.14, 95% CI: 0.67-6.82). CONCLUSIONS Our study contributes to the evidence that children with higher serum magnesium concentrations are less likely to have asthma. The associations between serum vitamin D concentrations and asthma were age-dependent.
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Affiliation(s)
- A A M van Oeffelen
- Department of Human Nutrition, Wageningen University, Wageningen, The Netherlands
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Gibson RS, Kafwembe E, Mwanza S, Gosset L, Bailey KB, Mullen A, Baisley K, Filteau S. A micronutrient-fortified food enhances iron and selenium status of Zambian infants but has limited efficacy on zinc. J Nutr 2011; 141:935-43. [PMID: 21411608 DOI: 10.3945/jn.110.135228] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Micronutrient-fortified, cereal-based infant foods are recommended for reducing multiple micronutrient deficiencies in low-income countries, but their nutritional quality is not always optimal. In a double-blind randomized trial, we compared the efficacy of a locally produced porridge based on maize, beans, bambaranuts, and groundnuts fortified with 19 (rich) or 9 (basal) micronutrients. Infants aged 6 mo from Lusaka, Zambia were randomized to receive the richly fortified (n = 373) or basal (n = 370) porridge daily for 12 mo along with routine vitamin A supplements. Baseline and final micronutrient status and inflammation (based on α-1-glycoprotein) were assessed using nonfasting blood samples. Baseline prevalence of anemia (39%) and zinc deficiency (51%) were a public health concern. There were overall treatment effects on hemoglobin (Hb) (P = 0.001), serum transferrin receptor (P < 0.001), serum ferritin (P < 0.001), and serum selenium (P = 0.009); biomarker responses for iron and zinc were modified by baseline concentrations, and for Hb and iron by socioeconomic status. At 18 mo, the adjusted odds of anemia, iron deficiency anemia (Hb <105 g/L and transferrin receptor > 11.0 mg/L), and iron deficiency were 0.37 (95% CI = 0.25, 0.55), 0.18 (0.09, 0.35), and 0.30 (0.18, 0.50) times those in the basal group, respectively. The rich level of fortification had no overall treatment effect on serum zinc (1.09; 0.66, 1.80) but improved serum zinc in children with lower Hb concentrations at baseline (P = 0.024). A locally produced cereal- and legume-based infant food richly fortified with micronutrients reduced anemia and improved iron and selenium status but may require reformulation to improve the biochemical zinc status of urban Zambian infants.
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Affiliation(s)
- Rosalind S Gibson
- Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand.
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Kalkan Ucar S, Coker M, Sözmen E, Goksen Simsek D, Darcan S. An association among iron, copper, zinc, and selenium, and antioxidative status in dyslipidemic pediatric patients with glycogen storage disease types IA and III. J Trace Elem Med Biol 2010; 24:42-5. [PMID: 20122579 DOI: 10.1016/j.jtemb.2009.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Revised: 10/20/2009] [Accepted: 10/26/2009] [Indexed: 02/05/2023]
Abstract
Dyslipidemia in patients with glycogen storage disease types Ia (GSD Ia) and III (GSD III) does not lead to premature atherosclerosis. The aim of this study was to investigate the association among serum copper (Cu), zinc (Zn), iron (Fe), and selenium (Se) concentrations, and their carrier proteins: ceruloplasmin, albumin, and related antioxidant enzyme activities [superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), paraoxonase (PON), and arylesterase (ARYL)] in 20 GSD Ia and 14 III patients compared to age and sex matched 20 healthy subjects. Erythrocyte oxidative stress was measured by erythrocyte thiobarbituric acid reactive substances (eTBARSs). Hypertriglyceridemia [333 (36-890)mg/dL] in GSD Ia and hypercholesterolemia with elevated LDL-cholesterol [188 (91-313)mg/dL] and decreased HDL-cholesterol [32(23-58)mg/dL] levels in GSD III were found. Serum Cu, Fe, and Zn showed no significant differences between groups. However, Se 60 (54-94), 81 (57-127) microg/L, ceruloplasmin 21 (10-90), 27 (23-65) microg/L, and albumin 2.4 (1.7-5.1), 2.8 (1.8-4.06)g/dL levels were decreased in GSD Ia and III groups, respectively, in comparison with the controls [Se 110 (60-136) microg/L, ceruloplasmin 72 (32-94) microg/L, and albumin 4.4 (4-4.8)g/dL)]. In spite of high oxidative stress in erythrocyte detected by elevated eTBARS/Hb levels in GSD group [674.8 (454.6-948.2) for GSD Ia, 636.3 (460.9-842.1) for GSD III, and 525.6 (449.2-612.6)], the activities of CAT, SOD, ARYL, and PON in GSD patients were not different from the controls. GPx activity was decreased in GSD Ia [3.7 (1.8-7.1)U/mL] and GSD III [4.2 (2.2-8.6)U/mL] compared with healthy controls [7.1 (2.9-16.2)U/mL]. In conclusion, this study supplied the data for trace elements, their carrier, and antioxidative enzymes in the patients with GSD Ia and III. The trace elements and anti-oxidative enzyme levels in GSD patients failed to explain the atherosclerotic escape phenomenon reported in these patients.
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Affiliation(s)
- Sema Kalkan Ucar
- Ege University Faculty of Medicine, Department of Pediatric Endocrinology and Metabolism, 35100, Bornova, Izmir, Turkey.
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Michalke B, Grill P, Berthele A. A method for low volume and low Se concentration samples and application to paired cerebrospinal fluid and serum samples. J Trace Elem Med Biol 2009; 23:243-50. [PMID: 19747619 DOI: 10.1016/j.jtemb.2009.06.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 05/11/2009] [Accepted: 06/09/2009] [Indexed: 10/20/2022]
Abstract
The well-known beneficial health effects of Se have demanded the development of rapid and accurate methods for its analysis. A flow injection (FI) method with inductively coupled plasma mass spectrometry (ICP-MS) as a selenium-selective detector was optimized. Flow injection was carried out using a Knauer 1100 smartline inert series liquid chromatograph coupled with a Perkin Elmer DRC II ICP-mass spectrometer. For sample injection a Perkin Elmer electronic valve equipped with a 25microL sample loop was employed. Before measurement, standards or samples were administered with 1microg/L rhodium as internal standard for correction of changes in detector response according to changes in sample electrolyte concentration. The method characterization parameters are: LOD (3sigma criterion): 26ng/L, LOQ (10sigma criterion): 86ng/L, linearity: 0.05->10microg/L, r(2)=0.9999, serial or day-to-day precision at 2microg/L: 4.48% or 5.6%. Accuracy was determined by (a) recovery experiments (CSF spiked with 2microg/L Se); (b) comparison of FI-ICP-MS measurement with graphite furnace atomic absorption (GFAAS) measurements of 1:10 diluted serum samples; (c) Se determination in urine and serum control materials. Recovery (a) was 101.4%, measurement comparison with GFAAS (b) showed 98.8% (5 serum samples, 1:10 diluted in the range of 0.5-1.3microg/L, compared to GFAAS determination, which was set to 100%), and accuracy was 96.8% or 105.6% for the serum or urine control material. Analysis time per sample was short and typically below 2min for the complete measurement, including sample introduction, sample-line purge and quadruplicate Se determination. This method was used to determine Se in cerebrospinal fluid (CSF) and plasma (here parallel to GFAAS) in 35 paired serum and CSF samples. Se determination gave values in the range of 42-130microg/L for serum and 1.63-6.66microg/L for CSF. The median for Se in 35 individual CSF samples was 3.28microg/L, the mean (+/-SD) was 3.67 (1.35)microg/L, whilst for individual serum samples the median was 81microg/L and the mean (+/-SD) was 85 (26)microg/L. When relating the paired Se concentrations of CSF samples to respective serum samples it turned out that Se-CSF (behind blood brain barrier (BBB)) is independent on Se-serum concentration (before BBB).
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Affiliation(s)
- Bernhard Michalke
- Helmholtz Center Munich - German Research Center for Environmental Health, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany.
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Lin CA, Manary MJ, Maleta K, Briend A, Ashorn P. An energy-dense complementary food is associated with a modest increase in weight gain when compared with a fortified porridge in Malawian children aged 6-18 months. J Nutr 2008; 138:593-8. [PMID: 18287372 DOI: 10.1093/jn/138.3.593] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Poor complementary feeding practices are associated with stunting and growth faltering throughout the developing world. The objective was to compare the effect of using peanut-/soy-based fortified spread (FS) and corn porridge fortified with fish powder (FP) as complementary foods on growth in rural Malawian children. A total of 240 children were enrolled at the age of 6 mo and randomized to receive FS or FP. Both complementary foods provided 836 kJ/d from 6 to 9 mo of age and 1254 kJ/d from 9 to 18 mo of age. Children were followed monthly for anthropometry and fortnightly for the symptoms of fever, cough, or diarrhea until they were 18 mo old. Zn and Se status were assessed at 6 and 12 mo. The primary outcomes were the rates of weight and length gain from 6-12 mo and from 12-18 mo. Children who received FS gained 110 g more (95% CI 220 to 10) from 6-12 mo of age than children receiving FP. Weight gain did not differ between children receiving FS and FP between 12 and 18 mo of age, nor did statural growth from 6 to 12 mo or 12 to 18 mo. A total of 23% of all children were Zn deficient at 6 mo of age and this increased to 37% at 12 mo of age. Neither FS nor FP was associated with significantly improved Zn status. FS was associated with better weight gain from 6-12 mo of age and may be useful in conjunction with additional interventions to improve infant growth in the developing world.
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Affiliation(s)
- Carol A Lin
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
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Moncayo R, Kroiss A, Oberwinkler M, Karakolcu F, Starzinger M, Kapelari K, Talasz H, Moncayo H. The role of selenium, vitamin C, and zinc in benign thyroid diseases and of selenium in malignant thyroid diseases: Low selenium levels are found in subacute and silent thyroiditis and in papillary and follicular carcinoma. BMC Endocr Disord 2008; 8:2. [PMID: 18221503 PMCID: PMC2266752 DOI: 10.1186/1472-6823-8-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 01/25/2008] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Thyroid physiology is closely related to oxidative changes. The aim of this controlled study was to evaluate the levels of nutritional anti-oxidants such as vitamin C, zinc (Zn) and selenium (Se), and to investigate any association of them with parameters of thyroid function and pathology including benign and malignant thyroid diseases. METHODS This controlled evaluation of Se included a total of 1401 subjects (1186 adults and 215 children) distributed as follows: control group (n = 687), benign thyroid disease (85 children and 465 adults); malignant thyroid disease (2 children and 79 adults). Clinical evaluation of patients with benign thyroid disease included sonography, scintigraphy, as well as the determination of fT3, fT4, TSH, thyroid antibodies levels, Se, Zn, and vitamin C. Besides the routine oncological parameters (TG, TSH, fT4, ultrasound) Se was also determined in the cases of malignant disease. The local control groups for the evaluation of Se levels were taken from a general practice (WOMED) as well as from healthy active athletes. Blood samples were collected between 8:00 and 10:30 a.m. All patients lived in Innsbruck. Statistical analysis was done using SPSS 14.0. The Ho stated that there should be no differences in the levels of antioxidants between controls and thyroid disease patients. RESULTS Among the thyroid disease patients neither vitamin C, nor Zn nor Se correlated with any of the following parameters: age, sex, BMI, body weight, thyroid scintigraphy, ultrasound pattern, thyroid function, or thyroid antibodies. The proportion of patients with benign thyroid diseases having analyte concentrations below external reference cut off levels were 8.7% of cases for vitamin C; 7.8% for Zn, and 20.3% for Se. Low Se levels in the control group were found in 12%. Se levels were significantly decreased in cases of sub-acute and silent thyroiditis (66.4 +/- 23.1 microg/l and 59.3 +/- 20.1 microg/l, respectively) as well as in follicular and papillary thyroid carcinoma. The mean Se level in the control group was 90.5 +/- 20.8 microg/l. CONCLUSION The H0 can be accepted for vitamin C and zinc levels whereas it has to be rejected for Se. Patients with benign or malignant thyroid diseases can present low Se levels as compared to controls. Low levels of vitamin C were found in all subgroups of patients.
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Affiliation(s)
- Roy Moncayo
- WOMED, Karl-Kapferer-Strasse 5, Innsbruck, Austria
- Clinical Department of Nuclear Medicine, Medical University of Innsbruck, Austria
| | - Alexander Kroiss
- Clinical Department of Nuclear Medicine, Medical University of Innsbruck, Austria
| | - Manfred Oberwinkler
- Clinical Department of Nuclear Medicine, Medical University of Innsbruck, Austria
| | - Fatih Karakolcu
- Clinical Department of Nuclear Medicine, Medical University of Innsbruck, Austria
| | - Matthias Starzinger
- Clinical Department of Nuclear Medicine, Medical University of Innsbruck, Austria
| | - Klaus Kapelari
- Clinical Department of Pediatrics, Medical University of Innsbruck, Austria
| | - Heribert Talasz
- Biocenter, Division of Clinical Biochemistry, Innsbruck Medical University, Austria
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Thomson CD, McLachlan SK, Parnell WR, Wilson N, Wohlers M, Scragg R, Schaaf D, Fitzgerald ED. Serum selenium concentrations and dietary selenium intake of New Zealand children aged 5-14 years. Br J Nutr 2007; 97:357-64. [PMID: 17298706 DOI: 10.1017/s0007114507336738] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Serum Se concentrations and dietary Se intakes have been determined in relation to age, sex, ethnicity, region and index of deprivation in a nationally representative sample of New Zealand children aged 5-14 years from the 2002 National Children's Nutrition Survey. Dietary intake was assessed from computer-assisted, multiple-pass 24 h diet recall interviews (n 3275). Serum Se concentrations were obtained from a subset of urban-based children (n 1547). Mean (95 % CI) serum Se concentration in children was 0.96 (0.93, 1.00) micromol/l. Males (1.00 micromol/l) had higher serum Se levels than females (0.93 micromol/l; P = 0.027). Mäori children had lower serum Se than Pacific Islands children (P = 0.038) and New Zealand European and Other children (P = 0.005). Children in the Upper North Island (1.06 micromol/l) had higher mean serum Se values than those in the Lower North Island (0.98 micromol/l, P < 0.0005) and South Island (0.79 micromol/l, P < 0.0005), and serum Se in the Lower North Island was higher than that in the South Island (P < 0.0005). Mean dietary Se intake was 36 (34, 37) microg/d. The intakes of children aged 5-6 years (31 microg/d) were lower than those of children aged 7-10 and 11-14 years (35 and 38 microg/d, respectively; P < 0.00 005) and the intakes of 7-10-year-olds were lower than those of 11-14-year-olds (P = 0.002). Serum Se was associated with dietary Se after adjusting for all variables, including region (P = 0.006). The Se status of our children falls in the middle of the international range of serum Se concentrations, but that for children in the South Island is among the lowest values reported and may be a cause for concern.
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