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The role of iodine in mammary tissue is related to fetal and neonatal development, but its role in the other tissues is not well known. [8] It has been shown to act as an antioxidant [8] and antiproliferant [9] in various tissues that can uptake iodine. Molecular iodine (I 2) has been shown to have a suppressive effect on benign and cancerous ...
Starch is a substance common to most plant cells and so a weak iodine solution will stain starch present in the cells. Iodine is one component in the staining technique known as Gram staining, used in microbiology. Used as a mordant in Gram's staining, iodine enhances the entrance of the dye through the pores present in the cell wall/membrane.
Iodine is the fourth halogen, being a member of group 17 in the periodic table, below fluorine, chlorine, and bromine; since astatine and tennessine are radioactive, iodine is the heaviest stable halogen. Iodine has an electron configuration of [Kr]5s 2 4d 10 5p 5, with the seven electrons in the fifth and outermost shell being its valence ...
Iodine is often referred to as a mordant, but is a trapping agent that prevents the removal of the CV–I complex and, therefore, colors the cell. [ 16 ] When a decolorizer such as alcohol or acetone is added, it interacts with the lipids of the cell membrane. [ 17 ]
The sodium/iodide cotransporter, also known as the sodium/iodide symporter (NIS), [5] is a protein that in humans is encoded by the SLC5A5 gene. [6] [7] [8] It is a transmembrane glycoprotein with a molecular weight of 87 kDa and 13 transmembrane domains, which transports two sodium cations (Na +) for each iodide anion (I −) into the cell. [9]
Inorganic iodine enters the body primarily as iodide, I −. After entering the thyroid follicle (or thyroid follicular cell) via a Na + /I − symporter (NIS) on the basolateral side, iodide is shuttled across the apical membrane into the colloid via pendrin, after which thyroid peroxidase oxidizes iodide to atomic iodine (I) or iodinium (I +).
iodine: 53: 5ac: Iodine has a role in biochemical pathways of organisms from all biological kingdoms, indicating it is uniformly essential to life [48] Widely used in medicine, mainly for treatment of goitre and for its antibacterial properties. [11] Highly toxic to humans in its elemental form. [11] iridium: 77: 1a
Iodine in the ocean exists mostly in oceanic sediments and seawater. [4] During subduction of oceanic crust and seawater, most of the iodine cycles into seawater through brine, while a minor amount is cycled into the mantle. [4] Marine biota, including seaweed and fish, accumulate iodine from the seawater and return it during decomposition. [2]