| Serum thyroglobulin and urinary iodine concentration are the most appropriate indicators of iodine status and thyroid function under conditions of increasing iodine supply in schoolchildren in Benin. | |
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MedLine Citation:
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PMID: 11584093 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Iodine deficiency control programs have greatly reduced iodine deficiency disorders worldwide. For monitoring changes in iodine status, different indicators may be used. The aim of this study was to evaluate the suitability of indicators of iodine status and thyroid function, thyroglobulin (Tg), thyroid-stimulating hormone (TSH) and free thyroxine (FT4) in serum, thyroid volume and urinary iodine concentration, in iodine-deficient schoolchildren under conditions of increasing iodine supply. The study was established as a double-blind, placebo-controlled oral administration of a single dose of iodized oil to schoolchildren (7-10 y old), living in an iodine-deficient area of Benin, with an observation period of 10 mo. However, 3-4 mo after supplementation, iodized salt became available in the area. The study population therefore comprised an iodized oil-supplemented group and a nonsupplemented group, both of which had variable, uncontrolled intakes of iodized salt during the last 6 mo of the study. Initial mean serum concentrations of TSH and FT4 were within the normal range, whereas serum Tg concentration, urinary iodine concentration and thyroid volume were indicative of moderate-to-severe iodine deficiency. At the end of the study, all indicators had improved significantly, except thyroid volume, which had decreased only in the supplemented group. The supplemented group also still had significantly lower serum Tg and higher urinary iodine concentrations than the nonsupplemented group. Serum Tg and urinary iodine concentrations are the indicators most influenced by a changing iodine supply. Current normal reference ranges of serum concentrations of TSH and FT4 are too wide for detecting iodine deficiency in this age group. |
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Authors:
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T van den Briel; C E West; J G Hautvast; T Vulsma; J J de Vijlder; E A Ategbo |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of nutrition Volume: 131 ISSN: 0022-3166 ISO Abbreviation: J. Nutr. Publication Date: 2001 Oct |
Date Detail:
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Created Date: 2001-10-03 Completed Date: 2001-11-01 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0404243 Medline TA: J Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 2701-6 Citation Subset: IM |
Affiliation:
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Division of Human Nutrition and Epidemiology, Wageningen University, Wageningen, The Netherlands. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anthropometry Benin / epidemiology Child Double-Blind Method Female Health Status Indicators Humans Iodine / deficiency, urine* Iodized Oil / metabolism*, therapeutic use Male Thyroglobulin / blood* Thyroid Function Tests |
| Chemical | |
Reg. No./Substance:
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7553-56-2/Iodine; 8001-40-9/Iodized Oil; 9010-34-8/Thyroglobulin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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