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Haematin (also known as hematin, ferriheme, hematosin, hydroxyhemin, oxyheme, phenodin, or oxyhemochromogen) is a dark bluish or brownish pigment containing iron in the ferric state, obtained by the oxidation of haem. [1] Haematin inhibits the synthesis of porphyrin (by repressing ALAS1 synthesis), [2] and stimulates the synthesis of globin.
In acidic solutions, complexes of hematein with metals (usually aluminium or iron, but also chromium, zirconium and several others) are used as biological stains. Aluminium-haematein (haemalum) is the "routine" stain for cell nuclei in sections of human and other animal tissues.
Hemin is protoporphyrin IX containing a ferric iron (Fe 3+) ion with a coordinating chloride ligand.. Chemically, hemin differs from the related heme-compound hematin chiefly in that the coordinating ion is a chloride ion in hemin, whereas the coordinating ion is a hydroxide ion in hematin. [2]
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The following other wikis use this file: Usage on de.wikipedia.org Hämatine; Usage on es.wikipedia.org Hematina; Usage on fa.wikipedia.org هماتین
Black-brown pigment was observed by Johann Heinrich Meckel [1] in 1847, in the blood and spleen of a person suffering from insanity. [2] However, it was not until 1849 that the presence of this pigment was connected to infection with malaria. [3]
Cerebrospinal fluid specimen stained with Perls Prussian blue showing iron containing macrophage (stained blue) surrounded by erythrocytes (stained red). In histology, histopathology, and clinical pathology, Perls Prussian blue is a commonly used method to detect the presence of iron in tissue or cell samples.
Porphyria / p ɔːr ˈ f ɪr i ə / is a group of disorders in which substances called porphyrins build up in the body, adversely affecting the skin or nervous system. [1] The types that affect the nervous system are also known as acute porphyria, as symptoms are rapid in onset and short in duration. [1]