AUTHORS: DeMorrow S, Cudalbu C, Davies N, Jayakumar AR, Rose C

Liver International, 41: 1474-1488, April 2021

ABSTRACT

This working group of the International Society of Hepatic Encephalopathy and Nitrogen Metabolism (ISHEN) was commissioned to summarize and update current efforts in the development and characterization of animal models of hepatic encephalopathy (HE). As defined in humans, HE in animal models is based on the underlying degree and severity of liver pathology. Although hyperammonemia remains the key focus in the pathogenesis of HE, other factors associated with HE have been identified, together with recommended animal models, to help explore the pathogenesis and  pathophysiological mechanisms of HE. While numerous methods to induce liver failure and disease exist, less have been characterized with  neurological and neurobehavioural impairments. Moreover, there still remains a paucity of adequate animal models of Type C HE induced by alcohol, viruses and non-alcoholic fatty liver disease; the most common etiologies of chronic liver disease.

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