9/5/2023 0 Comments Lorazepam antidote![]() Alcohol dehydrogenase also catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites. Alcohol dehydrogenase catalyzes the oxidation of ethanol to acetaldehyde. Mechanism of actionĪntizol (fomepizole) is a competitive inhibitor of alcohol dehydrogenase. It is formic acid that is primarily responsible for the metabolic acidosis and visual disturbances that are associated with methanol poisoning. Methanol is first metabolized to formaldehyde and then undergoes subsequent oxidation via formaldehyde dehydrogenase to become formic acid. Glycolate and oxalate are primarily responsible for metabolic acidosis and renal damage seen in ethylene glycol toxicity. Ethylene glycol is first metabolized to glycoaldehyde which then undergoes further oxidation to glycolate, glyoxylate, and oxalate. Fomepizole is a competitive inhibitor of alcohol dehydrogenase, the enzyme that catalyzes the initial steps in the metabolism of ethylene glycol and methanol to their toxic metabolites.
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