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Metobolomics uncovers key indicators of nonalcoholic fatty liver disease
Date:11/23/2009

A recent metobolomics study by researchers from Virginia Commonwealth University Medical Center in Richmond found that impaired peroxisomal oxidation of polyunsaturated fatty acids (PUFA) is associated with the progression of nonalcoholic fatty liver (NAFL) to nonalcoholic steatohepatitis (NASH). The study also found significantly higher plasma monounsaturated fatty acids in the blood of patients with NAFL and NASH. Full findings appear in the December issue of Hepatology, a journal published by Wiley-Blackwell on behalf of the American Association for the Study of Liver Diseases.

Nonalcoholic fatty liver disease (NAFLD) affects a third of the U.S. adult population, with many cases found in obese individuals. NAFLD ranges from NAFL, a benign condition where fat accumulates in the liver of people who drink little or no alcohol, to a more serious state known as NASH where inflammation or scarring of the liver occurs and which can progress to liver failure.

Study participants included 50 in a lean normal control, 25 subjects with NAFL and 50 patients with NASH. Researchers classified the NAFL group by a diagnosis of fatty liver with the presence of accumulated liver fat of at least grade 1 severity according to the NASH Clinical Research Network criteria. The NASH group included those with at least a grade 1 severity in accumulated liver fat, inflammation and cytologic ballooning of at least grade 1 severity in each. The nonalcoholic nature of the disease was established by clinical assessment that the alcohol consumption was less than 20 gm/day for women and 30 gm/day for men. Lean normal controls were identified by a body mass index between 18-25 kg/m2, absence of symptoms or signs of disease, normal liver enzymes and hepatic sonogram.

The research team, headed by Arun Sanyal, M.B.B.S., M.D., used mass spectrometry (a technique that determines the basic composition of a sample) to analyze blood lipids and metabolites of
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Contact: Dawn Peters
medicalnews@wiley.com
781-388-8408
Wiley-Blackwell
Source:Eurekalert

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