Correlations between magnetic resonance spectroscopy alterations and cerebral ammonia and glucose metabolism in cirrhotic patients with and without hepatic …

K Weissenborn, B Ahl, D Fischer-Wasels… - Gut, 2007 - gut.bmj.com
Background: Hepatic encephalopathy is considered to be mainly caused by increased
ammonia metabolism of the brain. If this hypothesis is true, cerebral glucose utilisation …

[PDF][PDF] Regional differences in cerebral blood flow and cerebral ammonia metabolism in patients with cirrhosis

B Ahl, K Weissenborn, J van den Hoff… - …, 2004 - Wiley Online Library
Clinical and histopathological findings hint at regional differences in the brain's sensitivity to
metabolic changes in cirrhosis. The aim of the present study was to examine regional …

Functional imaging of the brain in patients with liver cirrhosis

K Weissenborn, M Bokemeyer, B Ahl… - Metabolic Brain …, 2004 - Springer
Brain imaging techniques have provided substantial insight into the pathophysiology of
hepatic encephalopathy (HE). Magnetic resonance imaging gave hint to the fact that there is …

Low cerebral oxygen consumption and blood flow in patients with cirrhosis and an acute episode of hepatic encephalopathy

P Iversen, M Sørensen, LK Bak, HS Waagepetersen… - Gastroenterology, 2009 - Elsevier
BACKGROUND & AIMS: It is unclear whether patients with hepatic encephalopathy (HE)
have disturbed brain oxygen metabolism and blood flow. METHODS: We measured cerebral …

Regional reduction in gray and white matter volume in brains of cirrhotic patients: voxel-based analysis of MRI

M Iwasa, R Mifuji-Moroka, M Kuroda, H Moroka… - Metabolic brain …, 2012 - Springer
Chronic hepatic encephalopathy is a characteristically reversible neuropsychiatric disorder
that occurs mainly in patients with liver cirrhosis. The brain regions critically involved in the …

[PDF][PDF] Brain metabolism of 13N‐ammonia during acute hepatic encephalopathy in cirrhosis measured by positron emission tomography

S Keiding, M Sørensen, D Bender, OL Munk, P Ott… - …, 2006 - Wiley Online Library
Animal studies and results from 13N‐ammonia positron emission tomography (PET) in
patients with cirrhosis and minimal hepatic encephalopathy suggest that a disturbed brain …

The development of low-grade cerebral edema in cirrhosis is supported by the evolution of 1H-magnetic resonance abnormalities after liver transplantation

J Córdoba, J Alonso, A Rovira, C Jacas, F Sanpedro… - Journal of …, 2001 - Elsevier
Background/Aims: Liver failure may cause brain edema through an increase in brain
glutamine. However, usually standard neuroimaging techniques do not detect brain edema …

[PDF][PDF] Hepatic encephalopathy is associated with decreased cerebral oxygen metabolism and blood flow, not increased ammonia uptake

G Dam, S Keiding, OL Munk, P Ott, H Vilstrup… - …, 2013 - Wiley Online Library
Studies have shown decreased cerebral oxygen metabolism (CMRO2) and blood flow
(CBF) in patients with cirrhosis with hepatic encephalopathy (HE). It remains unclear …

Brain metabolism in minimal hepatic encephalopathy assessed by 3.0‐Tesla magnetic resonance spectroscopy

Y Kooka, K Sawara, R Endo, A Kato… - Hepatology …, 2016 - Wiley Online Library
Aim To examine whether the brain exhibits metabolic disorder prior to overt hepatic
encephalopathy in patients with liver cirrhosis (LC), the intracerebral glutamine and myo …

Pathophysiology of hepatic encephalopathy: a new look at ammonia

RF Butterworth - Metabolic brain disease, 2002 - Springer
Results of neuropathologic, spectroscopic, and neurochemical studies continue to confirm a
major role for ammonia in the pathogenesis of the central nervous system complications of …