Does liver-disease aetiology have a role in cerebral blood-flow alterations in liver cirrhosis?

被引:19
作者
Burra, P
Senzolo, M
Pizzolato, G
Ermani, M
Chierichetti, F
Bassanello, M
Naccarato, R
Dam, M
机构
[1] Univ Padua, Dept Surg & Gastroenterol Sci, I-35128 Padua, Italy
[2] Univ Padua, Dept Neurol, Padua, Italy
关键词
liver cirrhosis; liver-disease aetiology; hepatic encephalopathy; single-positron-emission tomography; cerebral blood flow;
D O I
10.1097/00042737-200409000-00012
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Background Studies using brain-imaging techniques have shown changes in regional blood flow (rCBF) in patients with liver cirrhosis. It remains unknown whether the aetiology of liver disease accounts for these changes. Aims To evaluate whether the aetiology of liver cirrhosis is associated with different patterns of rCBF. Materials and methods A total of 50 patients with end-stage liver disease and no overt encephalopathy were studied. Thirteen age-matched subjects admitted to the neurology department for headache were used as controls. Exclusion criteria were focal brain lesions, severe brain atrophy and any abnormalities found on computed tomography scan suggesting other central nervous system diseases, alcohol intake or use of neuroactive drugs for at least 6 months. rCBF was assessed using single-positron-emission tomography (SPECT) with Tc-99m-hexamethylpropylene amine oxime (Tc-99m-HM-PAO) as a tracer in all patients and controls. The Mann-Whitney U test was used for statistical analysis. Results The liver-disease aetiology was as follows: alcoholic (A) in 19 patients; viral (V) (hepatitis B virus, hepatitis D virus, hepatitis C virus) in 14 patients; alcoholic with concomitant viral (A+V) in five patients; and cholestatic (C) (primary biliary cirrhosis, primary sclerosing cholangitis) in 12 patients. SPECT showed significantly lower rCBF in cirrhotic patients than in controls for most cortical and subcortical regions and in alcoholic and viral patients than in cholestatic liver disease patients for some cortical regions. When patients were grouped according to previous alcohol abuse (including cases with a concomitant viral aetiology), rCBF was significantly lower in the frontal superior, medial and temporal inferior regions in the alcoholic group. Conclusions Cerebral blood flow is significantly lower in patients with liver cirrhosis than in controls and, among cirrhotics, it is lower in alcoholic and viral cirrhosis than in cholestatic liver disease. In patients with previous alcohol abuse, cerebral blood flow was significantly more reduced in the frontal and temporal regions compared with patients without previous alcohol abuse.
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页码:885 / 890
页数:6
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