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Updated: Apr 4, 2026

Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen
Published on: November 27, 2019
Acetaminophen metabolism after liver resection: A prospective case-control study
Michael J Hughes1, Ewen M Harrison1, Yiping Jin2
1Department of Clinical Surgery, Royal Infirmary of Edinburgh, Edinburgh, United Kingdom.
Liver resection alters acetaminophen metabolism, particularly with low residual liver volume. Therapeutic acetaminophen is safe post-surgery if liver function is adequate, with no observed glutathione deficiency.
Area of Science:
- Hepatology
- Pharmacology
- Surgical Science
Background:
- The impact of liver resection on acetaminophen metabolism remains unclear.
- The influence of residual liver volume on this metabolic process is not well understood.
Purpose of the Study:
- To investigate how liver resection affects acetaminophen metabolism.
- To determine if residual liver volume influences post-operative acetaminophen metabolism.
Main Methods:
- A prospective observational case-control study involving inpatients undergoing liver resection.
- Measurement of urinary acetaminophen metabolites and glutathione levels over three post-operative days.
- Comparison between patients with low (Group A) and high (Group B) residual liver volume.
Main Results:
- Urinary cysteine levels significantly increased from post-operative day 1 to day 2.
- Patients with low residual liver volume (Group A) exhibited significantly higher median cysteine levels on post-operative days 1 and 3 compared to those with high residual liver volume (Group B).
- No significant differences in glutathione or 5-oxoproline levels were found between the groups.
Conclusions:
- Low residual liver volume leads to altered acetaminophen metabolism post-liver resection.
- No evidence of glutathione deficiency was observed in patients receiving therapeutic acetaminophen.
- Acetaminophen is considered safe for therapeutic use after major liver resection when liver function is adequate.
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