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Related Experiment Video

Updated: Jun 4, 2026

Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen

Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen

Published on: November 27, 2019

Acute-on-chronic liver failure: the brain.

Rita García-Martínez¹, Juan Córdoba

¹Servei de Medicina Interna-Hepatología, Hospital Vall d'Hebron, Madrid, Spain.

Current Opinion in Critical Care

|February 25, 2011

Summary

Hepatic encephalopathy in acute-on-chronic liver failure involves brain energy impairment and ammonia toxicity. Ammonia-focused therapies and treatments for brain edema, inflammation, and circulatory dysfunction show promise for preventing and treating neurological complications.

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Area of Science:

Hepatology
Neurology
Biochemistry

Background:

Brain disturbances, a form of hepatic encephalopathy, are prevalent in acute-on-chronic liver failure.
Hepatic encephalopathy is associated with energy impairment, neurotransmission disturbances, and astrocyte injury.

Purpose of the Study:

To review the mechanisms of brain disturbances in acute-on-chronic liver failure.
To discuss current and emerging therapeutic strategies for hepatic encephalopathy.

Main Methods:

Review of recent findings on the pathogenesis of hepatic encephalopathy.
Analysis of clinical trials and experimental models.

Main Results:

Ammonia contributes to brain edema and oxidative stress; neuroinflammation is a newly identified factor.
Cognitive deficits can persist post-liver transplantation.
Drugs reducing intestinal ammonia production and therapies improving circulatory function (albumin, vasoconstrictors) are effective.
Novel drugs enhancing ammonia disposal show promise.

Conclusions:

Understanding pathogenesis supports ammonia-focused therapies for encephalopathy prevention and treatment.
Targeting brain edema, circulatory dysfunction, and inflammation may improve neurological outcomes.