Journal
DIGESTIVE DISEASES AND SCIENCES
Volume 52, Issue 11, Pages 3259-3265Publisher
SPRINGER
DOI: 10.1007/s10620-006-9687-y
Keywords
bifidobacterium; fructo-oligosaccharides; hepatic encephalopathy; cirrhosis; neuropsychological test
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Minimal hepatic encephalopathy (MHE) describes patients with chronic liver disease or cirrhosis who have no clinical symptoms of brain dysfunction but perform worse on psychometric tests compared with healthy subjects. The pathogenesis of hepatic encephalopathy is controversial although ammonia has been found to induce cerebral dysfunction. Increased intestinal ammonia production is due to bacterial urease activity and the production of other toxin methabolities, such as mercaptans, thioles. This study assesses the clinical efficacy of Bifidobacterium longum plus fructo-oligosaccharides (FOS) in the treatment of MHE. A total of 60 cirrhotic patients were randomly and equally divided into two groups receiving Bifidobacterium+FOS (17 males, 13 females; mean age, 46 +/- 11 years) or placebo (16 males, 14 females; mean age, 45 +/- 12 years), respectively. All patients underwent clinical and laboratory assessment psychometric tests and automated EEG analysis: neurophysiological assessment, liver function assessment, amd neuropsychological assessment. After 90 days of treatment, fasting NH4 serum levels were significantly decreased (P=0.003), performance on Trail Making Test-A was significantly decreased (P=0.000), performance on Trail Making Test-B was significantly decreased (P=0.000), performance on the symbol digit modalities test was significantly improved (P < 0.05), performance on block design was significantly improved (P=0.000), and performance on the MMSE test was significantly improved (P=0.000). We conclude that the improvement in biochemical and neuropsychological tests of the group treated with Bifidobacterium longum+FOS are interesting and merit further, close examination.
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