Abstract:
BACKGROUND:Thyroid gland is highly dependent on dietary intake of iodine for normal function, so it is particularly subjected to "endocrine disruptor" action. The human sodium/iodide symporter (hNIS) is an integral plasma membrane glycoprotein mediating the active transport of iodide into thyroid follicular cells, a crucial step for thyroid hormone biosynthesis. Beyond to perchlorate and thyocianate ions a few other inhibitors of iodide uptake have been described. AIM:The aim of this study was to investigate if 10 substances usually used as drugs in clinical practice were able to inhibit NIS-mediated iodide uptake in vitro. MATERIALS AND METHODS:A CHO cell line stably expressing hNIS was used to test any inhibition of NIS-mediated iodide uptake exerted by drugs. Perchlorate and thyocianate ions were used as positive controls. RESULTS:None of the analyzed substances was able to significantly inhibit iodide uptake in our system. As we expected, perchlorate and thyocianate ions were able to inhibit iodide uptake in a dose-dependent manner. CONCLUSIONS:In conclusion, we carried out an in vitro assay to evaluate the potential inhibitory effect of common drugs on NISmediated iodide uptake by using CHO-hNIS cells. None of the analyzed substances was able to inhibit iodide uptake; only perchlorate and thyocianate were able to inhibit iodide uptake in a dose-dependent manner.
journal_name
J Endocrinol Investjournal_title
Journal of endocrinological investigationauthors
Agretti P,Dimida A,De Marco G,Ferrarini E,Rodrìguez Gonzàlez JC,Santini F,Vitti P,Pinchera A,Tonacchera Mdoi
10.1007/BF03347061subject
Has Abstractpub_date
2011-03-01 00:00:00pages
170-4issue
3eissn
0391-4097issn
1720-8386pii
7046journal_volume
34pub_type
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