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Heme arginate (or haem arginate) is a compound of heme and arginine used in the treatment of acute porphyrias. [1] [2] This heme product is only available outside the United States and is equivalent to hematin. [3] Heme arginate is a heme compound, whereby L-arginine is added to prevent rapid degradation.
Intravenous hemin (as heme arginate or hematin) is the recommended therapy for acute attacks. [ 3 ] [ 7 ] Acute attacks can be severe enough to cause death if not treated quickly and correctly. Hospitalization is typically required for administration of hemin, and appropriate drug selection is key to avoid exacerbating symptoms with drugs that ...
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.
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]
Heme D is the site for oxygen reduction to water of many types of bacteria at low oxygen tension. [24] Heme S is related to heme B by having a formyl group at position 2 in place of the 2-vinyl group. Heme S is found in the hemoglobin of a few species of marine worms.
Heme A (or haem A) is a heme, a coordination complex consisting of a macrocyclic ligand called a porphyrin, chelating an iron atom. Heme A is a biomolecule and is produced naturally by many organisms. Heme A, often appears a dichroic green/red when in solution, is a structural relative of heme B, a component of hemoglobin, the red pigment in blood.
Hematein exhibits indicator-like properties, being blue and less soluble in aqueous alkaline conditions, and red and more soluble in alcoholic acidic conditions. Dissolved haematein slowly reacts with atmospheric oxygen, yielding products that have not found applications.
The malaria parasite, therefore, detoxifies the hematin, which it does by biocrystallization—converting it into insoluble and chemically inert β-hematin crystals (called hemozoin). [13] [14] [15] In Plasmodium the food vacuole fills with hemozoin crystals, which are about 100–200 nanometres long and each contain about 80,000 heme molecules ...