Exact Mass: 51.94051
Exact Mass Matches: 51.94051
Found 11 metabolites which its exact mass value is equals to given mass value 51.94051,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
Hypochlorite
The hypochlorite ion is ClO-. A hypochlorite compound is a chemical compound containing this group. Hypochlorite is a strong oxidant. About 28\\% of oxygen consumed by phagocytes upon activation participates in its generation. Hypochlorite reacts with H2O2 producing singlet oxygen (1O2) - a strong initiator of Lipid peroxidation. O-sub 2, along with H2O2 can serve as the substrate for myeloperoxidase. When this takes place, Hypochlorite is formed. Hypochlorite is able to modify antioxidants incorporated into lipoproteins such as Alpha-tocopherol, Beta-carotene, lycopene, and ubiquinol-10. It is also able to modify a number of proteins which possess antioxidant functions such as ceruloplasmin, transferrin, superoxide dismutase, and catalase. Active myeloperoxidase is found at sites of atherosclerotic damage to the arterial vessel wall in humans. Lipid peroxidation is known to contribute to the development of pathological processes, among them atherosclerosis. The present hypothesis is that blood lipoproteins modified by Lipid peroxidation play a key role in the pathogenesis of this disease. One of the possible reasons for the appearance of oxidized blood lipoproteins in blood is the interaction of native blood lipoproteins with the reactive oxygen species generated by stimulated neutrophils, monocytes and other cells. The main reaction of Hypochlorite with unsaturated lipid is probably the generation of chlorohydrins. However, this reaction is not accompanied by generation of free radicals and Lipid peroxidation. This reaction is accompanied by the production of free radicals (but not singlet oxygen), probably alkoxyl radicals, which may play a role in the initiation of Hypochlorite-induced Lipid peroxidation. (PMID: 9260000, Biofactors. 1997;6(2):181-90.) [HMDB] The hypochlorite ion is ClO-. A hypochlorite compound is a chemical compound containing this group. Hypochlorite is a strong oxidant. About 28\\% of oxygen consumed by phagocytes upon activation participates in its generation. Hypochlorite reacts with H2O2 producing singlet oxygen (1O2) - a strong initiator of Lipid peroxidation. O-sub 2, along with H2O2 can serve as the substrate for myeloperoxidase. When this takes place, Hypochlorite is formed. Hypochlorite is able to modify antioxidants incorporated into lipoproteins such as Alpha-tocopherol, Beta-carotene, lycopene, and ubiquinol-10. It is also able to modify a number of proteins which possess antioxidant functions such as ceruloplasmin, transferrin, superoxide dismutase, and catalase. Active myeloperoxidase is found at sites of atherosclerotic damage to the arterial vessel wall in humans. Lipid peroxidation is known to contribute to the development of pathological processes, among them atherosclerosis. The present hypothesis is that blood lipoproteins modified by Lipid peroxidation play a key role in the pathogenesis of this disease. One of the possible reasons for the appearance of oxidized blood lipoproteins in blood is the interaction of native blood lipoproteins with the reactive oxygen species generated by stimulated neutrophils, monocytes and other cells. The main reaction of Hypochlorite with unsaturated lipid is probably the generation of chlorohydrins. However, this reaction is not accompanied by generation of free radicals and Lipid peroxidation. This reaction is accompanied by the production of free radicals (but not singlet oxygen), probably alkoxyl radicals, which may play a role in the initiation of Hypochlorite-induced Lipid peroxidation. (PMID: 9260000, Biofactors. 1997;6(2):181-90.). D009676 - Noxae > D016877 - Oxidants
Chromium
Chromium is a naturally occurring heavy metal found in the environment commonly in trivalent, Cr(III), and hexavalent, Cr(VI), forms. The reduction of Cr(VI) to Cr(III) results in the formation of reactive intermediates that contribute to the cytotoxicity, genotoxicity and carcinogenicity of Cr(VI)-containing compounds. The major non-occupational source of chromium for humans is food such as vegetables, meat, urban air, hip or knee prostheses and cigarettes. Cr(VI) is a widely used in industrial chemicals, extensively used in paints, metal finishes, steel including stainless steel manufacturing, alloy cast irons, chrome and wood treatment. On the contrary, Cr(III) salts such as chromium polynicotinate, chromium chloride and chromium picolinate (CrP) are used as micronutrients and nutritional supplements and have been demonstrated to exhibit a significant number of health benefits in animals and humans. Physiologically, it exists as an ion in the body. Chromium enters the body through the lungs, gastro-intestinal tract and to a lesser extent through skin. Inhalation is the most important route for occupational exposure, whereas non-occupational exposure occurs via ingestion of chromium-containing food and water. Regardless of route of exposure Cr(III) is poorly absorbed whereas Cr(VI) is more readily absorbed. Further, absorption of Cr(VI) is poorer by oral route, it is thus not very toxic when introduced by the oral route. But chromium is very toxic by dermal and inhalation routes and causes lung cancer, nasal irritation, nasal ulcer, hypersensitivity reactions and contact dermatitis. All the ingested Cr(VI) is reduced to Cr(III) before entering in the blood stream. The main routes for the excretion of chromium are via kidney/urine and the bile/feces. Cr(III) is unable to enter into the cells but Cr(VI) enters through membrane anionic transporters. Intracellular Cr(VI) is metabolically reduced to Cr(III). Cr(VI) does not react with macromolecules such as DNA, RNA, proteins and lipids. However, both Cr(III) and the reductional intermediate Cr(V) are capable of co-ordinate, covalent interactions with macromolecules. Chromium is an essential nutrient required by the human body to promote the action of insulin for the utilization of sugars, proteins and fats. CrP has been used as nutritional supplement; it controls blood sugar in diabetes and may reduce cholesterol and blood pressure levels. Chromium increases insulin binding to cells, insulin receptor number and activates insulin receptor kinase leading to increased insulin sensitivity. But high doses of chromium and long term exposure of it can give rise to various, cytotoxic and genotoxic reactions that affect the immune system of the body. However, the mechanism of the Cr(VI)-induced cytotoxicity is not entirely understood. A series of in vitro and in vivo studies have demonstrated that Cr(VI) induces oxidative stress through enhanced production of reactive oxygen species (ROS) leading to genomic DNA damage and oxidative deterioration of lipids and proteins. A cascade of cellular events occur following Cr(VI)-induced oxidative stress including enhanced production of superoxide anion and hydroxyl radicals, increased lipid peroxidation and genomic DNA fragmentation, modulation of intracellular oxidized states, activation of protein kinase C, apoptotic cell death and altered gene expression. Some of the factors in determining the biological outcome of chromium exposure include the bioavailability, solubility of chromium compounds and chemical speciation, intracellular reduction and interaction with DNA. The chromium genotoxicity manifests as several types of DNA lesions, gene mutations and inhibition of macromolecular synthesis. Further, chromium exposure may lead to apoptosis, premature terminal growth arrest or neoplastic transformation. Chromium-induced tumor suppressor gene p53 and oxidative processes are some of the major factors that may determine the cellular outcome. Stud... Chromium (pronounced /?kro?mi?m/, KROH-mee-?m) is a chemical element which has the symbol Cr and atomic number 24, first element in Group 6. It is a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point. It is also odourless, tasteless, and malleable. The name of the element is derived from the Greek word "chr?ma" (?????), meaning color, because many of its compounds are intensely colored. It was discovered by Louis Nicolas Vauquelin in the mineral crocoite (lead chromate) in 1797. Crocoite was used as a pigment, and after the discovery that the mineral chromite also contains chromium this latter mineral was used to produce pigments as well.; Chromium is a member of the transition metals, in group 6. Chromium(0) has an electronic configuration of 4s13d5, due to the lower energy of the high spin configuration. Chromium exhibits a wide range of possible oxidation states. The most common oxidation states of chromium are +2, +3, and +6, with +3 being the most stable. +1, +4 and +5 are rare.; Chromium is a naturally occurring heavy metal found in the environment commonly in trivalent, Cr(III), and hexavalent, Cr(VI), forms. The reduction of Cr(VI) to Cr(III) results in the formation of reactive intermediates that contribute to the cytotoxicity, genotoxicity and carcinogenicity of Cr(VI)-containing compounds. The major non-occupational source of chromium for humans is food such as vegetables, meat, urban air, hip or knee prostheses and cigarettes. Cr(VI) is a widely used in industrial chemicals, extensively used in paints, metal finishes, steel including stainless steel manufacturing, alloy cast irons, chrome and wood treatment. On the contrary, Cr(III) salts such as chromium polynicotinate, chromium chloride and chromium picolinate (CrP) are used as micronutrients and nutritional supplements and have been demonstrated to exhibit a significant number of health benefits in animals and humans. Physiologically, it exists as an ion in the body.; Chromium enters the body through the lungs, gastro-intestinal tract and to a lesser extent through skin. Inhalation is the most important route for occupational exposure, whereas non-occupational exposure occurs via ingestion of chromium-containing food and water. Regardless of route of exposure Cr(III) is poorly absorbed whereas Cr(VI) is more readily absorbed. Further, absorption of Cr(VI) is poorer by oral route, it is thus not very toxic when introduced by the oral route. But chromium is very toxic by dermal and inhalation routes and causes lung cancer, nasal irritation, nasal ulcer, hypersensitivity reactions and contact dermatitis. All the ingested Cr(VI) is reduced to Cr(III) before entering in the blood stream. The main routes for the excretion of chromium are via kidney/urine and the bile/feces. Cr(III) is unable to enter into the cells but Cr(VI) enters through membrane anionic transporters. Intracellular Cr(VI) is metabolically reduced to Cr(III). Cr(VI) does not react with macromolecules such as DNA, RNA, proteins and lipids. However, both Cr(III) and the reductional intermediate Cr(V) are capable of co-ordinate, covalent interactions with macromolecules. Chromium is an essential nutrient required by the human body to promote the action of insulin for the utilization of sugars, proteins and fats. CrP has been used as nutritional supplement; Chromium is passivated by oxygen, forming a thin protective oxide surface layer. This layer is a spinel structure only a few atoms thick. It is very dense, preventing diffusion of oxygen into the underlying material. (In iron or plain carbon steels the oxygen migrates into the underlying material.) Chromium is usually plated on top of a nickel layer which may first have been copper plated. Chromium, unlike metals such as iron and nickel, does not suffer from hydrogen embrittlement. It does suffer from nitrogen embrittlement - chromium reacts with nitrogen from air and forms brittle nitrides at temperatures necessa...
HYPOCHLOROUS ACID
A chlorine oxoacid with formula HOCl; a weak, unstable acid, it is the active form of chlorine in water. D009676 - Noxae > D016877 - Oxidants