Selenium status, thyroid volume, and multiple nodule formation in an area with mild iodine deficiency

ObjectiveThe objective was to study the associations between serum selenium concentration and thyroid volume, as well as the association between serum selenium concentration and risk for an enlarged thyroid gland in an area with mild iodine deficiency before and after iodine fortification was introd...

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Veröffentlicht in:European journal of endocrinology 2011-04, Vol.164 (4), p.585-590
Hauptverfasser: Rasmussen, Lone Banke, Schomburg, Lutz, Köhrle, Josef, Pedersen, Inge Bülow, Hollenbach, Birgit, Hög, Antonia, Ovesen, Lars, Perrild, Hans, Laurberg, Peter
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container_end_page 590
container_issue 4
container_start_page 585
container_title European journal of endocrinology
container_volume 164
creator Rasmussen, Lone Banke
Schomburg, Lutz
Köhrle, Josef
Pedersen, Inge Bülow
Hollenbach, Birgit
Hög, Antonia
Ovesen, Lars
Perrild, Hans
Laurberg, Peter
description ObjectiveThe objective was to study the associations between serum selenium concentration and thyroid volume, as well as the association between serum selenium concentration and risk for an enlarged thyroid gland in an area with mild iodine deficiency before and after iodine fortification was introduced. Another objective was to examine the association between serum selenium concentration and prevalence of thyroid nodules.DesignCross-sectional study.MethodsWe studied participants of two similar cross-sectional studies carried out before (1997–1998, n=405) and after (2004–2005, n=400) introduction of iodine fortification. Serum selenium concentration and urinary iodine were measured, and the thyroid gland was examined by ultrasonography in the same subjects. Associations between serum selenium concentration and thyroid parameters were examined in multiple linear regression models or logistic regression models.ResultsSerum selenium concentration was found to be significantly, negatively associated with thyroid volume (P=0.006), and a low selenium status significantly increased the risk for thyroid enlargement (P=0.007). Furthermore, low serum selenium status had a tendency to increase the risk for development of multiple nodules (P=0.087).ConclusionsLow serum selenium concentration was associated with a larger thyroid volume and a higher prevalence of thyroid enlargement.
doi_str_mv 10.1530/EJE-10-1026
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Another objective was to examine the association between serum selenium concentration and prevalence of thyroid nodules.DesignCross-sectional study.MethodsWe studied participants of two similar cross-sectional studies carried out before (1997–1998, n=405) and after (2004–2005, n=400) introduction of iodine fortification. Serum selenium concentration and urinary iodine were measured, and the thyroid gland was examined by ultrasonography in the same subjects. Associations between serum selenium concentration and thyroid parameters were examined in multiple linear regression models or logistic regression models.ResultsSerum selenium concentration was found to be significantly, negatively associated with thyroid volume (P=0.006), and a low selenium status significantly increased the risk for thyroid enlargement (P=0.007). Furthermore, low serum selenium status had a tendency to increase the risk for development of multiple nodules (P=0.087).ConclusionsLow serum selenium concentration was associated with a larger thyroid volume and a higher prevalence of thyroid enlargement.</description><identifier>ISSN: 0804-4643</identifier><identifier>EISSN: 1479-683X</identifier><identifier>DOI: 10.1530/EJE-10-1026</identifier><identifier>PMID: 21242171</identifier><language>eng</language><publisher>Bristol: BioScientifica</publisher><subject>Adolescent ; Adult ; Aged ; Biological and medical sciences ; Clinical Study ; Cross-Sectional Studies ; Endocrinopathies ; Female ; Fundamental and applied biological sciences. Psychology ; Humans ; Iodine - deficiency ; Iodine - urine ; Male ; Medical sciences ; Middle Aged ; Non tumoral diseases. Target tissue resistance. Benign neoplasms ; Selenium - blood ; Thyroid Diseases - blood ; Thyroid Diseases - diagnostic imaging ; Thyroid Gland - diagnostic imaging ; Thyroid Gland - metabolism ; Thyroid Gland - pathology ; Thyroid. 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Another objective was to examine the association between serum selenium concentration and prevalence of thyroid nodules.DesignCross-sectional study.MethodsWe studied participants of two similar cross-sectional studies carried out before (1997–1998, n=405) and after (2004–2005, n=400) introduction of iodine fortification. Serum selenium concentration and urinary iodine were measured, and the thyroid gland was examined by ultrasonography in the same subjects. Associations between serum selenium concentration and thyroid parameters were examined in multiple linear regression models or logistic regression models.ResultsSerum selenium concentration was found to be significantly, negatively associated with thyroid volume (P=0.006), and a low selenium status significantly increased the risk for thyroid enlargement (P=0.007). Furthermore, low serum selenium status had a tendency to increase the risk for development of multiple nodules (P=0.087).ConclusionsLow serum selenium concentration was associated with a larger thyroid volume and a higher prevalence of thyroid enlargement.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Biological and medical sciences</subject><subject>Clinical Study</subject><subject>Cross-Sectional Studies</subject><subject>Endocrinopathies</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Iodine - deficiency</subject><subject>Iodine - urine</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Non tumoral diseases. Target tissue resistance. Benign neoplasms</subject><subject>Selenium - blood</subject><subject>Thyroid Diseases - blood</subject><subject>Thyroid Diseases - diagnostic imaging</subject><subject>Thyroid Gland - diagnostic imaging</subject><subject>Thyroid Gland - metabolism</subject><subject>Thyroid Gland - pathology</subject><subject>Thyroid. 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Another objective was to examine the association between serum selenium concentration and prevalence of thyroid nodules.DesignCross-sectional study.MethodsWe studied participants of two similar cross-sectional studies carried out before (1997–1998, n=405) and after (2004–2005, n=400) introduction of iodine fortification. Serum selenium concentration and urinary iodine were measured, and the thyroid gland was examined by ultrasonography in the same subjects. Associations between serum selenium concentration and thyroid parameters were examined in multiple linear regression models or logistic regression models.ResultsSerum selenium concentration was found to be significantly, negatively associated with thyroid volume (P=0.006), and a low selenium status significantly increased the risk for thyroid enlargement (P=0.007). Furthermore, low serum selenium status had a tendency to increase the risk for development of multiple nodules (P=0.087).ConclusionsLow serum selenium concentration was associated with a larger thyroid volume and a higher prevalence of thyroid enlargement.</abstract><cop>Bristol</cop><pub>BioScientifica</pub><pmid>21242171</pmid><doi>10.1530/EJE-10-1026</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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ispartof European journal of endocrinology, 2011-04, Vol.164 (4), p.585-590
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source Oxford University Press Journals All Titles (1996-Current); MEDLINE
subjects Adolescent
Adult
Aged
Biological and medical sciences
Clinical Study
Cross-Sectional Studies
Endocrinopathies
Female
Fundamental and applied biological sciences. Psychology
Humans
Iodine - deficiency
Iodine - urine
Male
Medical sciences
Middle Aged
Non tumoral diseases. Target tissue resistance. Benign neoplasms
Selenium - blood
Thyroid Diseases - blood
Thyroid Diseases - diagnostic imaging
Thyroid Gland - diagnostic imaging
Thyroid Gland - metabolism
Thyroid Gland - pathology
Thyroid. Thyroid axis (diseases)
Ultrasonography
Vertebrates: endocrinology
Young Adult
title Selenium status, thyroid volume, and multiple nodule formation in an area with mild iodine deficiency
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