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Influence of uremic middle molecules on blood cells
Abstract:
Uremic middle molecular weight substances are obtained from the ultrafiltrate of plasma of uremic patients. Seven subfractions are isolated by chromatography using Sephadex G-15 and DEAE 25 A columns. Each subfraction is tested for its inhibitory effect upon lymphocyte blastogenesis and influence upon osmotic fragility of red blood cells. Consequently, subfractions c and d exert notable effects on both lymphocytes and red blood cells. The main constituents of subfraction d are aspartic acid, glycine, glutamine, and cysteine. It is concluded that uremic middle molecular substances have a deleterious effect upon blood cells. Therefore, hemofiltration, which is advantageous for the removal of middle molecular weight substances, is considered to be a method of choice for uremic patients.
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