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Updated: Aug 14, 2026

Measurement and Analysis of Extracellular Acid Production to Determine Glycolytic Rate
Published on: December 12, 2015
A Review Article on 5-Oxoproline Induced High Anion Gap Metabolic Acidosis
Sarah Elsayed1, Ahmed Gohar2, Muhammad Omar3,4
1Ain Shams University, Cairo, Egypt.
Abstract:
In 1989, an acquired high anion gap metabolic acidosis due to elevated 5-oxoproline (pyroglutamic acid) was first reported. This is related to chronic acetaminophen use in malnourished patients and women with chronic medical conditions, it could happen even using therapeutic or low doses. The mainstay of treatment is cessation of acetaminophen use along with the administration of intravenous fluids. N-acetyl cysteine might accelerate improvement. The best explanation of the disorder is glutathione depletion and activation of a key enzyme in the γ-glutamyl cycle. This review article aims to highlight the mechanism and management of acquired high anion gap metabolic acidosis caused by 5-oxoproline in the adult population.
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