Antidote for vitamin k toxicity7/24/2023 ![]() ![]() For SPM, PLP increased the LD50 from 0.162 to 0.262 mmol/kg and prevented death from renal failure at all doses employed except the highest. For KCN, PLP increased the LD50 from 0.088 to 0.188 mmol/kg and extended the survival time at the highest dose employed from a median of 3 min to a median of 60 min. Rats were given intraperitoneal injections of the toxicant, followed by injections of either saline or PLP. The role of PLP as an antidote for these toxicants in vivo was studied. Pyridoxal 5'-phosphate (PLP), the active form of vitamin B6, readily forms complexes with a wide variety of potentially toxic substances, including cyanide (KCN), spermine (SPM), gentamicin (GM), and dopamine (DOP).
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