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Erythrocyte-membrane fatty acid composition and cholesterol content were evaluated along with serum selenium in 33 patients with liver cirrhosis and in 40 normal subjects. Thirteen patients were suffering from post-viral (group V) and 20 from alcoholic (group A) cirrhosis. The aim of the study was to elucidate whether membrane lipid abnormalities in cirrhosis were linked to the aetiology of the disease or whether they were the results of the cirrhotic process itself. The patients presented a significant increase in membrane cholesterol, palmitic acid (C16:0) and saturated fatty acids (SFA), and a decrease in polyunsaturated fatty acids (PUFA) and polyunsaturated/saturated fatty acids ratio (P/S) compared with the control group. Serum selenium levels were significantly reduced. When patients were subdivided according to aetiology, the alcoholic patients showed greater lipid composition abnormalities than the viral cirrhotics (higher levels of SFA and lower PUFA and P/S), while pathologic palmitic acid, membrane cholesterol and serum selenium values were confirmed in both groups of patients. In conclusion, low serum selenium and a series of erythrocytes membrane lipid composition abnormalities would appear to be features peculiar to cirrhosis. Alcoholic cirrhotics, on the other hand, show a more deranged erythrocyte membrane lipid profile.
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