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Influence of physiological dietary selenium supplementation on the natural course of autoimmune thyroiditis.
MedLine Citation:
PMID:  20039895     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Objective  Our study aimed to investigate whether physiological doses of selenium (Se) influence the natural course of autoimmune thyroiditis (AIT). Design and Patients  A total of 76 consecutive patients (65F, 11M, median 43, range 15-75 years) with AIT, normal or slightly elevated TSH and fT4 within the normal range were divided into two groups: Group 0 (30 cases) was given no treatment while Group 1 (46 cases) was treated with sodium selenite 80 μg/day as a single oral dose for 12 months. Thyroperoxidase and thyroglobulin autoantibodies (TPO-Ab; Tg-Ab), TSH, fT4 and urine iodine concentrations (UIC) were measured at baseline and after 6 and 12 months of follow-up. Thyroid ultrasonography (US) was performed at each follow-up point. Echogenicity was measured by histographic analysis of gray-scale pixels (gsp) ranging from 0 = black to 255 = white. Results  Thyroid echogenicity decreased significantly in both groups after 6 months, but after 12 months, it had changed no more in Group 1, whereas it had dropped further in Group 0. No significant variation in TPO-Ab or Tg-Ab levels was observed between the two groups after 6 months, but both values decreased significantly after 12 months in Group 1, and five patients in this group became negative for TPO-Ab. TSH and FT4 showed no significant variations in either group. Conclusions  Dietary supplementation with physiological doses of Se seems to be effective in preventing a reduction in thyroid echogenicity after 6 months of treatment and in reducing TPO-Ab and Tg-Ab after 12 months, but does not modify TSH or FT4.
Authors:
Davide Nacamulli; Caterina Mian; Daniela Petricca; Francesca Lazzarotto; Susi Barollo; Dina Pozza; Stefano Masiero; Diego Faggian; Mario Plebani; Maria E Girelli; Franco Mantero; Corrado Betterle
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical endocrinology     Volume:  73     ISSN:  1365-2265     ISO Abbreviation:  Clin. Endocrinol. (Oxf)     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2011-01-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0346653     Medline TA:  Clin Endocrinol (Oxf)     Country:  England    
Other Details:
Languages:  eng     Pagination:  535-9     Citation Subset:  IM    
Copyright Information:
© 2010 Blackwell Publishing Ltd.
Affiliation:
Endocrinology Unit, Department of Medical and Surgical Sciences, University of Padua Veneto Institute of Oncology Department of Laboratory Medicine, Padua, Italy.
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