Topic
Iodine
About: Iodine is a research topic. Over the lifetime, 8936 publications have been published within this topic receiving 139981 citations. The topic is also known as: I & element 53.
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TL;DR: In this article, it was shown that illumination of the chlorine dioxide−iodine−malonic acid reaction with visible light suppresses oscillations and shifts the steady state of the reaction to lower concentrations of iodide ions.
Abstract: We show that illumination of the chlorine dioxide−iodine−malonic acid reaction with visible light suppresses oscillations and shifts the steady state of the reaction to lower concentrations of iodide ions. In the system with starch, illumination results in a strong decrease of the steady-state concentration of the triiodide−starch complex. We suggest a simple mechanism, in which iodine atoms produced by photodissociation of molecular iodine initiate reduction of chlorine dioxide to chlorite and oxidation of iodide ions to iodine. This results in a decreased amplitude of oscillations and, at more intense illumination, the cessation of oscillations. Illumination also lowers the steady-state concentrations of iodide and the triiodide−starch complex. Results obtained from numerical simulations are in good agreement with the experimental data.
75 citations
TL;DR: The sodium/iodide symporter (NIS) as discussed by the authors is an intrinsic membrane protein implicated in iodide uptake into thyroid follicular cells and plays a crucial role in iodine metabolism and thyroid regulation and its function is widely exploited in the diagnosis and treatment of benign and malignant thyroid diseases.
75 citations
TL;DR: Experiments suggested that the organic iodines were produced from the compounds released or contained in the media and cells were necessary for the considerable production of CH2I2 and CH2ClI, though CHI3 was produced by spent media with H2O2 or free iodine.
Abstract: Two strains of iodine-producing bacteria were isolated from marine samples. 16S rRNA gene sequences indicated the strains were most closely related to Roseovarius tolerans, and phylogenetic analysis indicated both belong to the same genus. 5 mM iodide inhibited the growth of strain 2S5-2 almost completely, and of strain S6V slightly. Both strains produced free iodine and organic iodine from iodide. CH2I2, CHI3 and CH2ClI were the main organic iodines produced by strain 2S5-2, and CHI3 and CH2I2 by strain S6V. Experiments using cells and spent media suggested that the organic iodines were produced from the compounds released or contained in the media and cells were necessary for the considerable production of CH2I2 and CH2ClI, though CHI3 was produced by spent media with H2O2 or free iodine.
74 citations
TL;DR: The present study defines alterations in serum proteinbound or precipitable iodine which accompany such rises during the administration of inorganic iodide in massive doses.
Abstract: IT HAS been shown that in euthyroid adults on an intake of inorganic iodide limited to that ordinarily present in the diet the serum precipitable or protein-bound iodine remains relatively constant within the range of 4.0 to 8.0 gamma per cent (1, 2). Under these circumstances the inorganic iodide in serum also remains constant at approximately one gamma per cent (3, 4). If, however, the intake of inorganic iodide is greatly increased, the concentration of this inorganic fraction rises several hundred fold, or more (4, 5). The present study defines alterations in serum proteinbound or precipitable iodine which accompany such rises during the administration of inorganic iodide in massive doses. Materials and Methods The pertinent clinical data on 8 patients who received up to 3 grams of potassium iodide or up to 7 ml. of a saturated solution of the same salt daily during periods as long as six months are presented in the legends to Figures 2 through 9. The sera of these subjects were analyzed at intervals ...
74 citations
74 citations