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  • Title: Plasma and red cell lipids in alcoholics with macrocytosis.
    Author: Clemens MR, Kessler W, Schied HW, Schupmann A, Waller HD.
    Journal: Clin Chim Acta; 1986 May 15; 156(3):321-8. PubMed ID: 3719988.
    Abstract:
    The cholesterol and phospholipid content and the fatty acid composition in plasma and red cell membranes was determined in 10 alcoholics with macrocytic erythrocytes. None of the patients had anemia. Red cells exhibited macrocytosis up to 108 fl in all patients. Bilirubin, albumin, prothrombin, and cholinesterase were in the normal range, whereas transaminases and gamma-glutamyl transpeptidase activities in serum were elevated in most of the patients. The molar ratio cholesterol/phospholipids in red cells was not altered in alcoholics. An abnormally high ratio of saturated/unsaturated fatty acids was found in plasma as well as in red cell phospholipids from alcoholics. Linoleic acid was substantially decreased in plasma of alcoholics (controls 32.3%, alcoholics 21.8%). This fatty acid abnormality was reflected by a decrease of linoleic acid in red cell phosphatidylcholine. The present data may suggest that fatty acid changes taking place in membranes of macrocytes were a consequence of changes in the plasma and reflect plasma/membrane exchanges rather than direct effects of ethanol on red cell membranes. Lipid alterations of red cell membranes may be involved in the development of macrocytosis in chronic alcoholism.
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