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  • Title: Ribonuclease inhibition of erythropoiesis in anemia of uremia.
    Author: Freedman MH, Saunders EF, Cattran DC, Rabin EZ.
    Journal: Am J Kidney Dis; 1983 Mar; 2(5):530-3. PubMed ID: 6829570.
    Abstract:
    The anemia of chronic renal failure was studied by assessing the effect of uremic serum on proliferation of human marrow erythroid stem cells into colonies in vitro. Of 50 sera tested, 46 inhibited "CFU-E" colony formation by a mean of 72%, and 42 inhibited "BFU-E" colonies by a mean of 53.5%, compared to normal sera. Analysis of the uremic sera revealed a striking increase of ribonuclease activity in every patient. Mean activity in the study group was 17,346 U/ml serum (range 6,700-36,250) compared to control mean of 1,047 +/- 247 U/ml. Purified ribonuclease added to marrow cultures in concentrations simulating uremic serum produced a dose-dependent decrease in CFU-E colonies suggesting that the substance has a role in the production of anemia of renal failure.
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