Clinical Report: Mapping Gray Matter Abnormalities in Hepatic Encephalopathy
Overview
This study investigates gray matter abnormalities in patients with hepatic encephalopathy (HE) using connectome analysis, identifying widespread cortical and subcortical changes.
Background
Hepatic encephalopathy is a significant neuropsychiatric complication of liver cirrhosis, associated with cognitive deficits and increased mortality risk. Understanding the neurobiological basis of HE through neuroimaging can provide insights into its pathological mechanisms.
Data Highlights
Measurement
Findings
Gray Matter Abnormalities
Widespread in prefrontal, motor, temporal, limbic cortices, basal ganglia, and thalamus
Concentrated in left inferior frontal gyrus, orbitofrontal cortex, and striatum
Structural Epicenters
Centered on bilateral superior frontal gyri and left inferior frontal gyrus
Key Findings
Patients with HE exhibit widespread gray matter abnormalities across multiple brain regions.
Structural neighborhood abnormalities correlate positively with cortical changes.
Functional-connectome epicenters are located in specific prefrontal regions.
Individual analyses reveal heterogeneous patterns of disease epicenters.
Gray matter abnormalities do not significantly align with normative functional or structural hubs.
Clinical Implications
The findings highlight the need for comprehensive neuroimaging assessments in HE to understand the extent of gray matter changes. Identifying disease epicenters may aid in developing targeted therapeutic strategies.
Conclusion
This study provides valuable insights into the organization of gray matter abnormalities in HE, emphasizing the role of structural connectivity in their distribution.
