iodine solution definition biology

Iodine in medicine. In other countries, seaweed and mother liquors of Chile saltpeter (sodium nitrate), which contain up to 0.4 percent iodine in the form of sodium iodate, are used for this purpose. [6], Iodine has important actions in the immune system. Extrathyroidal iodide concentrating mechanisms. The deiodinase isoenzymes constituted the second family of eukaryotic selenoproteins with identified enzyme function. Nutrition and Health. The trophic, antioxidant and apoptosis-inductor actions and the presumed antitumour activity of iodides might also be important for prevention of oral and salivary glands diseases. [19] Trace elements involved in GSH-Px and superoxide dismutase enzymes activities, i.e. The configuration of the outer electrons in an iodine atom is 5s25p5. Gram-positive and Gram-negative on the basis of cell-wall difference and by the sequential application of crystal violet, iodine… You can also try the grid of 16 letters. Iodine vapor is toxic and irritates the mucous membranes. (2007). All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. The English word games are: This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Banerjee, R.K., Bose, A.K., Chakraborty, T.K., de, S.K. The use of iodine in industry is still negligible in terms of volume but is highly promising. Physiol Rev., 41, 189–213. A.; Johannes, G. J. ○   Wildcard, crossword 20 :119–134. a bluish-black element of the halogen group that sublimates into a violet irritating gas. Salivary analysis in oral cancer patients: DNA and protein oxidation, reactive nitrogen species, and antioxidant profile. Cut a piece of Dialyses tubing off ; Place the Dialyses tube in water and open it. Deiodinases are able to extract electrons from iodides, and iodides from iodothyronines; so, they are involved in thyroid-hormone regulation, participating in the protection of thyrocytes from damage by H2O2 produced for thyroid-hormone biosynthesis. selenium, vanadium, magnesium, copper and zinc, may have been lacking in some terrestrial mineral-deficient areas. If starch is present, the iodine will turn dark blue. There is little iodine in surface drinking water (10−7—10−9 percent). One family of selenium-containing molecules as glutathione peroxidases repairs damaged cell membranes, while another (glutathione S-transferases) repairs damaged DNA and prevents mutations.[24]. [, Venturi S, Venturi A, Cimini D, Arduini C, Venturi M, Guidi A (January 1993). To extract iodine from oil-well waters, with an average iodine content of 20–40 mg/l in the form of iodiles, they are first treated with chlorine (2NaI + Cl2 = 2NaCl + I2) or nitrous acid (2NaI + 2NaNO2 + 2H2SO4 = 2Na2SO4 + 2NO + I2 + 2H2O). Its compounds are used in medicine and photography and in dyes. Upon slight heating it sublimates, precipitating in the form of fine lustrous flakes; this process is used in the laboratory and in industry for the purification of iodine. Gulaboglu M, Yildiz L, Celebi F, Gul M, Peker K (2005). European Epi-Marker. 106, 132. Spitzweg C, Joba W, Eisenmenger W, Heufelder AE (May 1998). [19] Algae that contain the highest amount of antioxidant selenium, iodide, and peroxidase enzymes were the first living cells to produce poisonous oxygen in the atmosphere. With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. In case of contamination of the environment by products of nuclear fission, radioactive iodine isotopes rapidly become part of the biological cycle, eventually entering milk and, consequently, the human body. Letters must be adjacent and longer words score better. Upon compaction of the sediment and subsequent formation of sedimentary rock, desorption occurs, and part of the iodine compounds passes into subterranean waters, forming iodobromine waters, which are used for extraction of iodine and are particularly characteristic of petroleum deposits (in places, the iodine content of such waters is more than 100/mg/l). It was discovered by the French chemist B. Cour-tois in 1811. In fact, the angiosperms (the dominant type of plant today) and most of their antioxidant pigments evolved during the late Jurassic period. The Use of Zinc to Prevent the Oxidation of Copper, How to Identify States of Matter in a Chemical Formula, The Reaction of Aluminum to Copper in Electrolysis, Hemera Technologies/PhotoObjects.net/Getty Images. These higher recommended daily allowance levels of iodine seem necessary for optimal function of a number of body systems, including lactating breast, gastric mucosa, salivary glands, oral mucosa, thymus, epidermis, choroid plexus etc. Food scientists can test for starch in food using a straw-colored liquid called iodine solution. [, Kryukov, G. V.; Gladyshev, V. N. (2004). It is known that a diet lacking in iodine is connected with adverse health effects collectively referred as iodine deficiency diseases or disorders. Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. The selenocysteine-containing form occurred in green algae, diatoms, sea urchin, fish and chicken, too. [, an offensive content(racist, pornographic, injurious, etc. Preparations containing iodine have antibacterial and fungicidal properties, as well as antiphlogistic and revulsive effects. They are applied externally to disinfect wounds and to prepare the area to be operated on. It’s always found combined with another substance and never by itself in nature, except for the naturally occurring isotope called stable iodine-127. When dissolved in water, iodine reacts partially with it (I2 + H2O ⇆ HI + HIO); iodide and iodate are formed in hot aqueous solutions of alkalies (3I2 + 6NaOH = 5NaI + NaIO3 + 3H2O). (1951). J Endocrinol. Iodine is an essential trace element for animals and humans.  |  A radioactive isotope, iodine-131, is used in the medical and biological research setting. ), "Analysis of human sodium iodide symporter gene expression in extrathyroidal tissues and cloning of its complementary deoxyribonucleic acids from salivary gland, mammary gland, and gastric mucosa", http://jcem.endojournals.org/cgi/pmidlookup?view=long&pmid=9589686, "Peroxidase-catalysed iodotyrosine formation in dispersed cells of mouse extrathyroidal tissues", http://joe.endocrinology-journals.org/cgi/pmidlookup?view=long&pmid=2991413, "Is there a role for iodine in breast diseases? Preparations of stable iodine (100–200 mg per dose) are recommended to reduce the deposition of radioactive iodine isotopes in the thyroid gland.

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