A golden yellow or yellow-brown insoluble protein produced by phagocytic digestion of hematin; found in most tissues, especially in the liver, spleen, and bone marrow, in the form of granules much larger than ferritin molecules (of which they are believed to be aggregates), but with a higher content, as much as 37%, of iron; stains blue with Perl Prussian blue stain. [hemo- + G. sideros, iron, + -in]

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he·mo·sid·er·in or chiefly Brit hae·mo·sid·er·in .hē-mō-'sid-ə-rən n a yellowish brown granular pigment formed by breakdown of hemoglobin, found in phagocytes and in tissues esp. in disturbances of iron metabolism (as in hemochromatosis, hemosiderosis, or some anemias), and composed essentially of colloidal ferric oxide compare FERRITIN

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he·mo·sid·er·in (he″mo-sidґər-in) [hemo- + Gr. sidēros iron] an intracellular storage form of iron, found in the form of pigmented yellow to brown granules consisting of a complex of ferric hydroxides, polysaccharides, and proteins with an iron content of about 33 per cent by weight.

Medical dictionary. 2011.

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  • Hemosiderin — or haemosiderin is an abnormal microscopic pigment found in the human body. Hemosiderin is composed of iron oxide and can accumulate in different organs in various diseases. Iron is required by many of the chemical reactions in the body but is… …   Wikipedia

  • hemosiderin — n. (Med.) a granular yellowish brown substance composed of protein and ferric oxide, resulting from the breakdown of hemoglobin; it has a higher iron content than ferritin, and its presence in body tissues or phagocytes can be a symptom of… …   The Collaborative International Dictionary of English

  • hemosiderin — noun Etymology: International Scientific Vocabulary hem + sider + 1 in Date: circa 1885 a yellowish brown granular intracellular pigment that is formed in some phagocytic cells (as macrophages) by the breakdown of hemoglobin and is probably… …   New Collegiate Dictionary

  • hemosiderin — /hee moh sid euhr in, hem oh /, n. Biochem. a yellowish brown protein containing iron, derived chiefly from hemoglobin and found in body tissue and phagocytes, esp. as the result of disorders in iron metabolism and the breakdown of red blood… …   Universalium

  • hemosiderin — noun An abnormal microscopic pigment, formed of granules of a complex of iron hydroxides, protein and polysaccharides, that forms in tissues of patients having an excess of iron …   Wiktionary

  • hemosiderin — n. protein containing iron and found in body tissue (especially as a result of certain disorders) …   English contemporary dictionary

  • hemosiderin — he·mo·sid·er·in …   English syllables

  • hemosiderin — noun a granular brown substance composed of ferric oxide; left from the breakdown of hemoglobin; can be a sign of disturbed iron metabolism (Freq. 2) • Syn: ↑haemosiderin • Hypernyms: ↑pigment • Substance Meronyms: ↑ferric oxide * * * …   Useful english dictionary

  • Hemosiderosis — Infobox Disease Name = PAGENAME Caption = Image of a kidney viewed under a microscope. The brown areas contain hemosiderin DiseasesDB = ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D006486 Hemosiderosis… …   Wikipedia

  • Ferritin — protein Name = ferritin, light polypeptide caption = Structure of the ferritin complex width = 200 HGNCid = 3999 Symbol = FTL AltSymbols = EntrezGene = 2512 OMIM = 134790 RefSeq = NM 000146 UniProt = P02792 PDB = ECnumber = Chromosome = 19 Arm =… …   Wikipedia

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