Comparison of benefits to non-dialysis CKD patients between darbepoetin alpha and epoetin beta pegol]
Nihon Jinzo Gakkai shi(2015)
Abstract
Erythropoiesis-stimulating agents (ESAs) are the mainstay of treatment for renal anemia in chronic kidney disease (CKD) patients. However, the difference in hematopoietic effect between darbepoetin alfa (DA) and continuous erythropoiesis receptor activator (CERA) has remained unclear in non-dialysis CKD patients. Another purpose of this study was to analyze the red blood cells indices under treatment with these two ESAs in ESA-naïve CKD patients.This study was designed as a multicenter retrospective observational investigation, and included 61 patients receiving DA (group DA) and 36 patients receiving CERA (group CERA) for at least six months. Relative effect of these ESAs was determined by comparing means of the individual monthly average of the area under the curve above the initial level of hemoglobin (Hb), hematocrit (Hct), and red blood cell count (RBC) with the trapezoidal rule, which are maintenance ratios. Serial changes in mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) were also evaluated.No differences were found in the mean ratios of Hb, Hct, and RBC, and maintenance ratios of these parameters. The ratio of MCH in group CERA was decreased compared with that in group DA. Subsequent decrease in MCV was also remarkable in group CERA.It is speculated that iron demand increased during the administration of CERA, which was suggested by changes in the red cell indices. Reticulocyte indices and iron-related parameters could provide a more detailed explanation and the significance of iron supplementation during administration of CERA should be clarified when compared with other types of ESA.
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Key words
darbepoetin beta pegol,darbepoetin alpha,non-dialysis
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