Selenium sulfide. There is no FDA guidance on the use of Selenium sulfide in women of reproductive potentials and males. [22] However, hair loss has not been reported with topical selenium disulfide in several large studies. [81], Selenium is used in the toning of photographic prints, and it is sold as a toner by numerous photographic manufacturers. The US Recommended Dietary Allowance (RDA) of selenium for teenagers and adults is 55g/day. Selenium is a chemical element with the symbol Se and atomic number 34. There is limited information regarding Postmarketing Experience of Selenium sulfide in the drug label. [101], Increased dietary selenium reduces the effects of mercury toxicity,[102][103][104] although it is effective only at low to modest doses of mercury. DermNet does not provide an online consultation service. Should not be used when acute inflammation or exudation is present as increased absorption may occur. Under ordinary circumstances Selenium Sulfide Topical Suspension USP, 2.5% (Lotion) should not be used for the treatment of tinea versicolor in pregnant women. Selenium is a cofactor for the three thyroid hormone deiodinases, helping activate and then deactivate various thyroid hormones and their metabolites. There is limited information regarding Drug Interaction of Selenium sulfide in the drug label. When prepared in chemical reactions, selenium is usually an amorphous, brick-red powder. There is no FDA guidance on the use of Selenium sulfide in patients with renal impairment. The reaction produces also cyclooctaselenium Se8 and all other eight-member cyclic selenium sulfides, except SeS7, and several six- and seven-membered rings.[2]. [139], Selenium deficiency, defined by low (<60% of normal) selenoenzyme activity levels in brain and endocrine tissues, occurs only when a low selenium level is linked with an additional stress, such as high exposures to mercury[140] or increased oxidant stress from vitamin E deficiency. Selenium sulfides are a group of 8 memebered ring compounds, with the general formula Se8-n Sn. Other problems include degeneration of liver tissue, swelling around the heart, damaged egg follicles in ovaries, cataracts, and accumulation of fluid in the body cavity and head. [105] Evidence suggests that the molecular mechanisms of mercury toxicity includes the irreversible inhibition of selenoenzymes that are required to prevent and reverse oxidative damage in brain and endocrine tissues. [8], The red , , and forms are produced from solutions of black selenium by varying the evaporation rate of the solvent (usually CS2). |?Pill Dosage At low levels, it is used in the body to create anti-oxidant selenoproteins, at higher doses than normal it causes cell death. In general, absorption of dietary selenium is lower in ruminants than other animals, and is lower from forages than from grain. Selenium is listed as an ingredient in many multivitamins and other dietary supplements, as well as in infant formula, and is a component of the antioxidant enzymes glutathione peroxidase and thioredoxin reductase (which indirectly reduce certain oxidized molecules in animals and some plants) as well as in 3 deiodinase enzymes. INDICATIONS: This product is a liquid antiseborrheic, antifungal preparation useful for the treatment of seborrheic dermatitis of the scalp, dandruff and tinea versicolor. This process leaches natural soluble selenium compounds (such as selenates) into the water, which may then be concentrated in wetlands as the water evaporates. [7][8][9], Selenium disulfide was approved for medical use in the United States at least as early as 1951. Do not use if your scalp or the skin to be treated is cut or scratched. [3] It is an oxidizing agent. [3][14], A 2015 systematic review of topical treatments for seborrheic dermatitis of the scalp identified only a single randomized controlled trial evaluating selenium disulfide for the condition. Black Se is a brittle, lustrous solid that is slightly soluble in CS2. On 19 April 2009, 21 polo ponies died shortly before a match in the United States Polo Open. Cancer patients receiving daily oral doses of selenothionine may achieve very high plasma and urine selenium concentrations. No, I continue reading, Those pouty eyes, those doughy lips, and that hunky attitude. |?Pill Scoring In the film Evolution selenium was mentioned as an active ingredient of Head & Shoulders. The recoding mechanism was worked out first in bacteria and then in mammals (see SECIS element).[45]. Consistent with trends indicated by the double bond rule, selenoketones, R(C=Se)R, and selenaldehydes, R(C=Se)H, are rarely observed. SHAKE WELL BEFORE USING. Selenium rectifiers were first used in 1933. [147] Neonate ruminants at risk of white muscle disease may be administered both selenium and vitamin E by injection; some of the WMD myopathies respond only to selenium, some only to vitamin E, and some to either. Selenium sulfide can refer to either of the following: Selenium disulfide, SeS 2. We all appreciate getting nice and sweaty at the gym, but what comes out must be put back in. Though once widely used, selenium rectifiers have mostly been replaced (or are being replaced) by silicon-based devices. Drug Information: Selenium Sulfide (Topical), Apply enough selenium sulfide shampoo to the scalp to, Allow lather to remain on scalp for 2-3 minutes before rinsing off, Repeat with a second wash then rinse well, Use 1% or 2.5% shampoo twice a week for the first 2 weeks, then once weekly for 2, 3 or 4 weeks, and then only when necessary, Apply selenium sulfide lotion to affected areas of the body (do not apply to face or genitals), Work up a lather using a small amount of water, Allow the medicine to stay in contact with your skin for about 10 minutes, Rinse body well to remove all the medicine, Use the 2.5% lotion once per day for 7 days, Unusual oiliness or dryness of hair or scalp. Applications in electronics, once important, have been mostly replaced with silicon semiconductor devices. WikiDoc does not promote the administration of any medication or device that is not consistent with its labeling. [ 1][ 2][ 3] Selenous acid is bubbled with sulfur dioxide (reduction step) to give elemental selenium. [37] The developmental code name of selenium sulfide for these uses is AZR-MD-001 and it is being developed by Azura Ophthalmics. [21] Selenium disulfide may also discolor metallic jewellery. [9] The eight atoms of a ring are not equivalent (i.e. Substantial physiological changes may occur in fish with high tissue concentrations of selenium. Inorganic selenium bioaccumulates more readily in phytoplankton than zooplankton. In addition to controlling the symptoms WebSelenium is a chemical element with the symbol Se and atomic number 34. |sort=Label Page The 1,2 isomer can be prepared by reaction of chlorosulfanes and dichlorodiselane with potassium iodide in carbon disulfide. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It is very important that you use selenium sulfide preparations strictly as directed on the label or as directed by your doctor. [6] Selenium disulfide acts as a keratolytic and antifungal agent. Dermatology Made Easybook. The common mineral selenite is not a selenium mineral, and contains no selenite ion, but is rather a type of gypsum (calcium sulfate hydrate) named like selenium for the moon well before the discovery of selenium. Selenium was later confirmed to be the toxic factor. [150], This article is about the chemical element. [37], Cyclic selenium sulfides R. Steudel, R. Laitinen, Topics in Current Chemistry, (1982), 102, 177-197, Srpskohrvatski / , World Health Organization's List of Essential Medicines, "Selenium sulfide topical Use During Pregnancy", Selenium(IV) sulfide - pharmacy codes search engine, "Meibomian Gland Dysfunction: A Dermatological Perspective on Pathogenesis and Treatment Outlook", "Zur Resorption und Toxicitt von Selensulfid", "Definition: selenium sulfide from Online Medical Dictionary", "Topical Selenium Sulfide for the Treatment of Hyperkeratosis", "ARVO 2021: Investigational Agent Containing Selenium Sulfide Shows Promise for Meibomian Gland Dysfunction", "A randomized, double-blind, placebo-controlled trial of ketoconazole 2% shampoo versus selenium sulfide 2.5% shampoo in the treatment of moderate to severe dandruff", https://en.wikipedia.org/w/index.php?title=Selenium_disulfide&oldid=1108463362, World Health Organization essential medicines, Infobox drug articles without a structure image, Articles containing unverified chemical infoboxes, Wikipedia medicine articles ready to translate, Creative Commons Attribution-ShareAlike License 3.0, 118 to 119C (244 to 246F) (decomposes), This page was last edited on 4 September 2022, at 14:56. [64], Selenium is used with bismuth in brasses to replace more toxic lead. Illustrative selenides include mercury selenide (HgSe), lead selenide (PbSe), zinc selenide (ZnSe), and copper indium gallium diselenide (Cu(Ga,In)Se2). [1][2] It is applied to the affected area as a lotion or shampoo. Topics AZ However, most elemental selenium comes as a byproduct of refining copper or producing sulfuric acid. There is limited information regarding Pharmacokinetics of Selenium sulfide in the drug label. China is the dominant consumer of selenium at 1,5002,000tonnes/year. Selenium sulfide is a antiseborrheic and dermatological agent that is FDA approved for the treatment of tinea versicolor, seborrheic dermatitis of the scalp, and dandruff. The educational content on WikiDoc drug pages is based upon the FDA package insert, National Library of Medicine content and practice guidelines / consensus statements. Selenium sulfide is a bright orange colored powder. The glutathione peroxidase family of enzymes (GSH-Px) catalyze certain reactions that remove reactive oxygen species such as hydrogen peroxide and organic hydroperoxides: The thyroid gland and every cell that uses thyroid hormone use selenium,[99] which is a cofactor for the three of the four known types of thyroid hormone deiodinases, which activate and then deactivate various thyroid hormones and their metabolites; the iodothyronine deiodinases are the subfamily of deiodinase enzymes that use selenium as the otherwise rare amino acid selenocysteine. Representatives of selenides, diselenides, and selenols include respectively selenomethionine, diphenyldiselenide, and benzeneselenol. Selen disulfide l mt loi thuc c s dng iu tr chng au tht ngc, vim da tit b v gu. In high concentrations, selenium acts as an environmental contaminant. [90] High selenium levels in waterways were found to cause congenital disorders in oviparous species, including wetland birds[91] and fish. [78] Ionized selenium (Se+24) is one of the active mediums used in X-ray lasers. |?Drug Name ), and false goldenweed (Oonopsis sp. China is the largest consumer of selenium dioxide for this purpose. Lucas Entertainment entered the bareback arena in 2013 with its Cybersocket Award Winner Spotlight: Rhyheim Shabazz, Top Cock of the Year, Pumping Up With AJ Sloan: Get It Wet Hydration Tips for Thirsty Guys, Where Are They Now: Trevor Knight Talks His 10-Inch Dick, His Studios Days as a Porn God, & Coming Back on OnlyFans, 7 Sexy Questions (VIDEO): Trent Marx Talks Gay Porn, Fav Sex Positions & Accidental Consent, Family Dick Serves Up a Hearty Twink Sandwich With Derek Allen As the Main Meat, Cybersocket Exclusive Interview: Ring in the Holidays With Tom Goss New EP Big Gay Ass Christmas, Young Bastards Has an Oral Scene So Hot You Wont Miss the Anal, Doctor Tapes: Cute Myott Hunter Reveals Ive Got the Hots For Doc Dalton Riley. This phenomenon was used in the design of light meters and similar devices. [143], In the regions (e.g. [2] Use is not recommended in children less than 25 years old. Talk to your doctor about the effects of taking alcohol with this medication. [82][83][84], 75Se is used as a gamma source in industrial radiography.[85]. WebSelsun Blue 2-in-1 Anti-dandruff Shampoo & Conditioner, 11 fl. Selenium is a chemical element with the symbol Se and atomic number 34. )[123], Selenium may be measured in blood, plasma, serum, or urine to monitor excessive environmental or occupational exposure, to confirm a diagnosis of poisoning in hospitalized victims, or investigate a suspected case of fatal overdose. WebThe safety of topical selenium sulfide lotion in man has been demonstrated previously. Selenium forms two oxides: selenium dioxide (SeO2) and selenium trioxide (SeO3). [121], The selenium content in the human body is believed to be in the 1320mg range. There have been no documented reports of serious toxicity in humans resulting from acute ingestion of Selenium Sulfide Topical Suspension USP, 2.5% (Lotion); however, acute toxicity studies in animals suggest that ingestion of large amounts could result in potential human toxicity. Selenium disulfide, also known as selenious disulfide, selenous disulfide, or selenium (IV) disulfide is a chemical compound. Upon heating, it softens at 50C and converts to gray selenium at 180C; the transformation temperature is reduced by presence of halogens and amines. Selenium hexasulfide, Se 2 S 6 Index of chemical compounds with the same name This set index page lists chemical compounds articles associated with the same name. [4], Side effects may include hair discoloration, skin irritation, and risk of systemic absorption and toxicity, among others. It is also not known whether Selenium Sulfide Topical Suspension USP, 2.5% (Lotion) can cause fetal harm when applied to body surfaces of a pregnant woman or can affect reproduction capacity. It should not be used on the body to treat skin infections if you are pregnant as selenium sulfide may be absorbed through the mothers skin. These include silver selenite (Ag2SeO3) and sodium selenite (Na2SeO3). [113] Marine fishes and vertebrate thyroid glands have the highest concentration of selenium and iodine. {{#ask: Page Name::Selenium sulfide It is easily washed away. A selenide is a chemical compound containing a selenium anion with oxidation number of 2 (Se 2 ), much as sulfur does in a sulfide. Repeat this procedure once a day for seven days. Selenium was also recognized as an important veterinary toxin, which is seen in animals that have eaten high-selenium plants. It is also used DermNet does not provide an online consultation service.If you have any concerns with your skin or its treatment, see a dermatologist for advice. Symptoms frequently return if treatment is stopped. The selenide dianion Se2 forms a variety of compounds, including the minerals from which selenium is obtained commercially. It would be continue reading, This one goes out to all my thirsty hoes. The pyrite from the Falun Mine created a red precipitate in the lead chambers which was presumed to be an arsenic compound, so the pyrite's use to make acid was discontinued. Brazil nuts are the richest dietary source (though this is soil-dependent, since the Brazil nut does not require high levels of the element for its own needs).[119][120]. There is no FDA guidance one the use of Selenium sulfide in patients who are immunocompromised. There is limited information regarding Off-Label NonGuideline-Supported Use of Selenium sulfide in pediatric patients. Such cells were later used in battery-free light meters for photography. In Belews Lake North Carolina, 19 species of fish were eliminated from the lake due to 150200g Se/L wastewater discharged from 1974 to 1986 from a Duke Energy coal-fired power plant. [20][19], Side effects of selenium disulfide shampoo for dandruff appear to be infrequent. Low strength selenium sulfide preparations are available from your pharmacy or supermarket. Selenium sulfide is a popular seborrheic dermatitis treatment commercially available only in wash-off formulations. [15][16], Selenium disulfide can cause discoloration of nails and light hair[7] and can alter the color of hair dyes. (Only the deiodinase iodotyrosine deiodinase, which works on the last breakdown products of thyroid hormone, does not use selenium. [10][11] The packing is most dense in the form. Editor-In-Chief: C. Michael Gibson, M.S., M.D. [25][26][27][28][29] However, application of selenium disulfide to damaged skin can result in systemic absorption and has been associated with cases of toxicity. Repeat this procedure once a day for seven days. Some analytical techniques are capable of distinguishing organic from inorganic forms of the element. [7], Selenium disulfide has a composition that approximates to SeS2 and is sometimes called selenium sulfide. they are not mapped one onto another by any symmetry operation), and in fact in the -monoclinic form, half the rings are in one configuration (and its mirror image) and half in another. Isolated selenium deficiency is now being investigated for its role in induction autoimmune reactions in thyroid gland in Hashimoto's disease. Is there anything Trent Marx doesnt deliver? [5] It is on the World Health Organization's List of Essential Medicines. In people prone to dandruff, an uninflamed form of seborrhoeic dermatitis, the fungus Malassezia can cause irritation, itching and increased shedding of dead skin cells in areas of the scalp. In 1954, the first hints of specific biological functions of selenium were discovered in microorganisms by biochemist, Jane Pinsent. [17] Isotopes lighter than the stable isotopes primarily undergo beta plus decay to isotopes of arsenic, and isotopes heavier than the stable isotopes undergo beta minus decay to isotopes of bromine, with some minor neutron emission branches in the heaviest known isotopes. Extreme cases of selenosis can exhibit cirrhosis of the liver, pulmonary edema, or death. Selenium from Greek seln ( 'Moon') was discovered in 1817 by Jns Jacob Berzelius, who noted the similarity of the new element to the previously discovered tellurium (named for the Earth). Selenium does not exhibit the changes in viscosity that sulfur undergoes when gradually heated. In soils, selenium most often occurs in soluble forms such as selenate (analogous to sulfate), which are leached into rivers very easily by runoff. It contains selenium in its +4 |?Pill Shape In humans, selenium is a trace element nutrient that functions as cofactor for reduction of antioxidant enzymes, such as glutathione peroxidases[98] and certain forms of thioredoxin reductase found in animals and some plants (this enzyme occurs in all living organisms, but not all forms of it in plants require selenium). DermNet provides Google Translate, a free machine translation service. [17], Selenium disulfide is available in the form of a prescription drug as a 2.5% medical shampoo. Selenium may have a chemo-preventive role in cancer risk as an anti-oxidant, and it might trigger the immune response. [35] It has also been reported to be effective in the treatment of scalp psoriasis based on clinical observation of over 100treated patients and two case reports of dramatic response. Michiaki Yamashita, Shintaro Imamura, Md. [10] Selenium disulfide is available as a generic medication and over the counter. Product may damage jewelry; remove jewelry before use. Jump search Mixture selenium sulfides.mw parser output .infobox subbox padding border none margin 3px width auto min width 100 font size 100 clear none float none background color [2][5] Use in pregnancy or breastfeeding has not been studied. [30], Many selenium sulfides are known, as indicated by 77Se-NMR spectroscopy. What are the side effects of selenium sulfide? Allow to remain on skin for 10 minutes. Sources of pollution include waste materials from certain mining, agricultural, petrochemical, and industrial manufacturing operations. Exceeding the Tolerable Upper Intake Level of 400 micrograms per day can lead to selenosis. Selenium is very rarely found as an element in the ground. There is limited information regarding Clinical Studies of Selenium sulfide in the drug label. [134], The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for selenium in the workplace at 0.2mg/m3 over an 8-hour workday. There is no FDA guidance on the use of Selenium sulfide with respect to nursing mothers. However, as used in proprietary formulations, it is not a pure chemical compound but a mixture of eight-membered-ring compounds where the overall Se:S ratio is 1:2. The lithiumselenium (LiSe) battery is one of the most promising systems for energy storage in the family of lithium batteries. The consumption in 2010 was divided as follows: metallurgy 30%, glass manufacturing 30%, agriculture 10%, chemicals and pigments 10%, and electronics 10%. Much below that level, young salmon die from deficiency;[135] much above, they die from toxic excess. [132] Selenium also occurs in organic compounds, such as dimethyl selenide, selenomethionine, selenocysteine and methylselenocysteine, all of which have high bioavailability and are toxic in large doses. |?Label Name It is a nonmetal (more rarely considered a metalloid ) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. The minimum distance between chains is 343.6pm. [51][52], Typical background concentrations of selenium do not exceed 1ng/m3 in the atmosphere; 1mg/kg in soil and vegetation and 0.5 g/L in freshwater and seawater. This page was last edited 17:24, 5 February 2015 by wikidoc user. There is limited information regarding Monitoring of Selenium sulfide in the drug label. [8] It resists oxidation by air and is not attacked by nonoxidizing acids. [35][36][37] The development of selenium rectifiers began during the early 1930s, and these replaced copper oxide rectifiers because they were more efficient. Please read our full disclaimer here. [133], In fish and other wildlife, selenium is necessary for life, but toxic in high doses. Sheets of amorphous selenium convert X-ray images to patterns of charge in xeroradiography and in solid-state, flat-panel X-ray cameras. [41][42] It was discovered to be essential for mammalian life in 1957. Selenium sulfide is used to make medicated shampoos. Not only are his looks sensually unique, he can take a dick (or many) very Lucas Entertainment, bringing us high-end gay porn since 1998, is at it again bringing you a wildly hot time with Alpha Cum. a antiseborrheic and dermatological agent that is FDA approved for the treatment of tinea versicolor, seborrheic dermatitis of the scalp, and dandruff. Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, dandruff, and pityriasis versicolor. Case reports of temporary diffuse hair loss with selenium disulfide shampoo exist as well. Other side effects that may occur include: See your doctor if these effects are severe or do not go away. National Research Council, Subcommittee on Sheep Nutrition (1985). For salmon, the optimal concentration of selenium is about 1 microgram selenium per gram of whole body weight. Selenium is a naturally occurring mineral element that is distributed widely in nature in most rocks and soils. In its pure form, it exists as metallic gray to black hexagonal crystals, but in nature it is usually combined with sulfide or with silver, copper, lead, and nickel minerals. [125], Selenium (in close interrelation with iodine) plays a role in thyroid health. Selenium monosulfide, along with elemental selenium and sulfur, has been used in medicinal preparations in the past,[32] causing confusion and contradiction[33] as to exactly what form selenium is in any given topical preparation. [4] It is on the World Health Organization's List of Essential Medicines. For this purpose, various selenite and selenate salts are added. Selenium came to medical notice later because of its toxicity to industrial workers. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. For treatment of tinea versicolor: Apply to affected areas and lather with a small amount of water. [59][60], About 2,000tonnes of selenium were produced in 2011 worldwide, mostly in Germany (650t), Japan (630t), Belgium (200t), and Russia (140t), and the total reserves were estimated at 93,000tonnes. Organoselenium compounds can be concentrated over 200,000 times by zooplankton when water concentrations are in the 0.5 to 0.8g Se/L range. Selenium pollution of waterways also occurs when selenium is leached from coal flue ash, mining and metal smelting, crude oil processing, and landfill. [142] Also, selenium interacts with other minerals, such as zinc and copper. |template=DrugPageImages [77] Cadmium selenide was an important component in quantum dots. }}. WebSelenium disulfide is a bright orange colored powder. Because of its similarity to tellurium, named for the Earth, Berzelius named the new element after the Moon.[31][32]. Daddy Got Dick, directed by David Romero for Pantheon Productions at NakedSword gives us simply fantastic pairings of beefy masculinity. Selenium from The regulation of lead in drinking water applications such as in the US with the Safe Drinking Water Act of 1974, made a reduction of lead in brass necessary. Respiratory capacity is further reduced due to selenium binding to hemoglobin. A few of these appeared more recently, in the last 50200 million years, in fruits and flowers of angiosperm plants. Some commonly used brand names are Selsun, Exsel and Head and Shoulders Intensive Treatment. Selenoprotein families of GSH-Px and the deiodinases of eukaryotic cells seem to have a bacterial phylogenetic origin. [21], Selenium disulfide should not be applied to damaged skin as there is a risk of systemic absorption and associated toxicity. There is limited information regarding Selenium sulfide Pharmacology in the drug label. It is toxic by ingestion and inhalation, and is irritating to skin and eyes. After this, the suspension may be used at less frequent intervals - weekly, every two weeks, or even every 3 or 4 weeks in some cases. In solution it ionizes to HSe. Its formula should be SeS 2. [89], Selenium poisoning of water systems may result whenever new agricultural run-off courses through dry lands. It is also used to treat some fungal infections of the skin. A reduction of 21% on TPO antibodies is reported with the dietary intake of 0.2mg of selenium. [128] In China, people who ingested corn grown in extremely selenium-rich stony coal (carbonaceous shale) have suffered from selenium toxicity. Occupational Safety and Health Administration, National Institute for Occupational Safety and Health, Magnetic susceptibility of the elements and inorganic compounds, "The NUBASE2016 evaluation of nuclear properties", "Lettre de M. Berzelius M. Berthollet sur deux mtaux nouveaux", "Effect of light on selenium during the passage of an electric current", "The need for selenite and molybdate in the formation of formic dehydrogenase by members of the Coli-aerogenes group of bacteria", "How Selenium Has Altered Our Understanding of the Genetic Code", 10.1579/0044-7447(2007)36[94:SGAH]2.0.CO;2, "How to use the world's scarce selenium resources efficiently to increase the selenium concentration in food", "Public Health Statement: Selenium Production, Import/Export, Use, and Disposal", "Chemistry: Periodic Table: selenium: key information", "Selenium and Tellurium: Statistics and Information", "Radiography of Welds Using Selenium 75, Ir 192 and X-rays", "Aquatic selenium pollution is a global environmental safety issue", "Mercury, selenium and fish oils in marine food webs and implications for human health", "Review of selenium toxicity in the aquatic food chain", "A teratogenic deformity index for evaluating impacts of selenium on fish populations", "Selenium accumulation protects plants from herbivory by Orthoptera via toxicity and deterrence", "Selenium concentrations in leaf material from Astragalus Oxyphysus (diablo locoweed) and Atriplex Lentiformis (quail bush) in the interior Coast Ranges and the western San Joaquin Valley, California", Linus Pauling Institute at Oregon State University, "Effect of Selenium on Thyroid Disorders: Scientometric Analysis", "Dietary and tissue selenium in relation to methylmercury toxicity", "Post-transcriptional defects of antioxidant selenoenzymes cause oxidative stress under methylmercury exposure", "Protective effect of selenite against methylmercury toxicity: observations concerning time, dose and route factors in the development of selenium attenuation", "Inhibition of the human thioredoxin system: A molecular mechanism of mercury toxicity", Strong antioxidant activity of the novel selenium-containing imidazole compound selenoneine, "Discovery of the strong antioxidant selenoneine in tuna and selenium redox metabolism", "Mercury: selenium interactions and health implications", "Selenocysteine-containing proteins in mammals", "Evolutionary dynamics of eukaryotic selenoproteomes: large selenoproteomes may associate with aquatic life and small with terrestrial life", "Evolution of Dietary Antioxidant Defences", "Reconsidering the evolution of eukaryotic selenoproteins: a novel nonmammalian family with scattered phylogenetic distribution", "The microbial selenoproteome of the Sargasso Sea", "FDA Issues Final Rule to Add Selenium to List of Required Nutrients for Infant Formula", "Selenium stimulates the antitumour immunity: Insights to future research", "Dietary Supplement Fact Sheet: Selenium", "Public Health Statement: Health Effects", "Polo pony selenium levels up to 20 times higher than normal", "CDC NIOSH Pocket Guide to Chemical Hazards Selenium", "Effect of micronutrient status on natural killer cell immune function in healthy free-living subjects aged 90 y", "Selenium and iodine supplementation of rural Tibetan children affected by Kashin-Beck osteoarthropathy", "Serum Selenium Status and Its Interrelationship with Serum Biomarkers of Thyroid Function and Antioxidant Defense in Hashimoto's Thyroiditis", "Selenium deficiency mitigates hypothyroxinemia in iodine-deficient subjects", National Institutes of Health page on Selenium, CDC NIOSH Pocket Guide to Chemical Hazards, https://en.wikipedia.org/w/index.php?title=Selenium&oldid=1123158494, Chemical elements with trigonal structure, Articles with dead external links from November 2020, Short description is different from Wikidata, Articles containing Swedish-language text, Articles to be expanded from February 2022, Articles with unsourced statements from June 2016, Pages using Sister project links with hidden wikidata, Creative Commons Attribution-ShareAlike License 3.0, grey metallic-looking, red, and vitreous black (not pictured) allotropes, This page was last edited on 22 November 2022, at 06:06. [7][8][9], Selenium disulfide was approved for medical use in the United States at least as early as 1951. Although trace amounts of selenium are necessary for cellular function in many animals, including humans, both elemental selenium and (especially) selenium salts are toxic in even small doses, causing selenosis. 2. However, the lack of tellurium compounds in the Falun Mine minerals eventually led Berzelius to reanalyze the red precipitate, and in 1818 he wrote a second letter to Marcet describing a newly found element similar to sulfur and tellurium. There is limited information regarding Selenium sulfide Look-Alike Drug Names in the drug label. [53], Anthropogenic sources of selenium include coal burning, and the mining and smelting of sulfide ores. For External Use Only. Zinc selenide was the first material for blue LEDs, but gallium nitride dominates that market. |mainlabel=- A group of academics, therefore, tried to use this brand of shampoo to stop an alien invasion after discovering that the alien life form was sensitive to selenium. [3], World Health Organization's List of Essential Medicines. [47][48] Ocean water contains significant amounts of selenium. Top 10 Uses of SeleniumAutomated testing. Earlier, people used to do manual testing which used to be a big headache. Important Benefits. Less burden and stress for testers As mentioned above, the amount of time required to do testing repeated test scenarios on each and every new build Reduction in Human resources. Several supplementary services. Fast and accurate. More items The isomer n-butane can connect in two ways, giving rise to two "-butyl" groups: . Alkali metal selenides react with selenium to form polyselenides, Se2n, which exist as chains. [7][13], Owing to its use as a photoconductor in flat-panel x-ray detectors (see below), the optical properties of amorphous selenium (-Se) thin films have been the subject of intense research.[14][15][16]. At levels of 1mg/m3, selenium is immediately dangerous to life and health. Seleni disulfide. The first commercial products using selenium were developed by Werner Siemens in the mid-1870s. arrow-right-small-blue Selenium poisoning can be passed from parents to offspring through the egg, and selenium poisoning may persist for many generations. This set index page lists chemical compounds articles Cookies help us deliver our services. |?Pill Imprint They all have a relatively low, monoclinic crystal symmetry (space group 14) and contain nearly identical puckered Se8 rings with different arrangements, as in sulfur. In nature, Selenium is usually combined with sulfide. For treatment of dandruff and seborrheic dermatitis of the scalp: 1. [1]; Associate Editor(s)-in-Chief: Adeel Jamil, M.D. WebPharmacokinetics: The mechanism of action of topically applied selenium sulfide is not yet known. For lot number and expiration date see label or bottom of container. A vdjegyzett ksztmnyek azonban nem egyetlen tiszta vegyletet tartalmaznak, hanem olyan keverket, melyben az Se:S arny sszessgben 1:2. [124], Although selenium is an essential trace element, it is toxic if taken in excess. [88], Bioaccumulation of selenium in aquatic environments causes fish kills depending on the species in the affected area. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. Common Phytoplankton can concentrate inorganic selenium by a factor of 3000. Three days later, a pharmacy released a statement explaining that the horses had received an incorrect dose of one of the ingredients used in a vitamin/mineral supplement compound that had been incorrectly prepared by a compounding pharmacy. https://www.wikidoc.org/index.php?title=Selenium_sulfide&oldid=1064061, Creative Commons Attribution/Share-Alike License. [87] Fish are a major source of protein for humans, people who eat more fish are generally healthier than those who eat less, indicating selenium pollution does not appear to be a problem, although it might be useful to be aware that selenium has a potential effect on humans. Adult fish may appear healthy despite their inability to produce viable offspring. Fire Hazard It is recommended that a water concentration of 2g Se/L be considered highly hazardous to sensitive fish and aquatic birds. Several scattered case reports of orange to redbrown scalp discoloration with selenium sulfide shampoo exist. The chronic toxic dose of selenite for humans is about 2400 to 3000 micrograms of selenium per day. Unlike the other allotropes, it is insoluble in CS2. [61][63], The largest commercial use of Se, accounting for about 50% of consumption, is for the production of glass. There is no FDA guidance on the use of Selenium sulfide with respect to pediatric patients.
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