title: On the question of lowering the content of ferrihaemoglobin in infusable haemoglobin solutions.
abstract: The reducing effect of ascorbic acid and of borohydride upon ferrihaemoglobin present in native and chemically modified human and bovine stroma-free hemoglobins was investigated. Ferrihaemoglobin which had been freshly prepared from oxyhaemoglobin by treatment with potassium ferricyanate was fully reduced to ferrohaemoglobin. Full reduction of ferrihaemoglobin, however, could not be achieved with those haemoglobin samples which had a partially deteriorated conformation due to long time storage or chemical modification.
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000494:pharmacology; D001894:Borohydrides / Q000494:pharmacology; D002417:Cattle; D006454:Hemoglobins / Q000032:analysis / Q000302:isolation & purification*; D006801:Humans; D007262:Infusions, Intravenous; D008706:Methemoglobin / Q000032:analysis / Q000378:metabolism*; D010084:Oxidation-Reduction / Q000187:drug effects; D012996:Solutions; D013054:Spectrophotometry, Atomic; D013997:Time Factors
chemical_list: D001894:Borohydrides; D006454:Hemoglobins; D012996:Solutions; C025364:sodium borohydride; D008706:Methemoglobin; D001205:Ascorbic Acid