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  • Title: Shortened red blood cell lifespan is related to the dose of erythropoiesis-stimulating agents requirement in patients on hemodialysis.
    Author: Sato Y, Mizuguchi T, Shigenaga S, Yoshikawa E, Chujo K, Minakuchi J, Kawashima S.
    Journal: Ther Apher Dial; 2012 Dec; 16(6):522-8. PubMed ID: 23190511.
    Abstract:
    Renal anemia is an important complication of chronic kidney disease (CKD). One of the most important complications of renal anemia is reduced red blood cell (RBC) lifespan, but there has been little research conducted into the causes of and treatments for this anemia. We measured alveolar carbon monoxide (CO) and then estimated RBC lifespan in patients on hemodialysis (HD). We also examined their requirement for erythropoiesis-stimulating agents (ESA), HD dose, nutrition factors, iron metabolism factor, reticulocyte counts and % reticulocytes. We enrolled 140 patients undergoing intermittent HD; among this group, 31 were not administered ESA and the others were on ESA therapy. Twelve healthy volunteers served as controls. The RBC lifespans in the healthy volunteers and in the HD patients were 128 ± 28 and 89 ± 28 days (mean ± SD), respectively. The RBC lifespan significantly and negatively correlated with ESA requirement (r = -0.489, P < 0.0001) in the HD patients. Other factors suspected to influence the RBC lifespan did not significantly correlate with the RBC lifespan in HD patients, in contrast to the correlation observed for S-Cr, BUN, S-ALB and total cholesterol vs. RBC lifespan. A shortened RBC lifespan seems to rather significantly affect the ESA requirement. Better nutritional status or active HD patients also seem to have longer RBC lifespans and lower ESA requirement.
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