Shortened red blood cell (RBC) lifespan is one of the major factors contributing to anemia in end-stage renal disease (ESRD) patients and should be taken into account in anemia management protocols. In this study, we aimed to estimate RBC lifespan and the source of between-subject variability in ESRD patients. The resulting individual parameters (empirical Bayes estimates) were used to predict hemoglobin concentrations 2 weeks in advance. The reticulocyte-based estimation of RBC lifespan (REBEL) and the population modeling of RBC count data were used. A total of 120 blood samples collected biweekly over 10 weeks in 24 patients receiving maintenance doses of recombinant human erythropoietin (rHuEPO) subcutaneously were included in this analysis. Typical RBC lifespan was estimated to be 63.3 days. RBC lifespan was found to increase with erythroferrone, a recently identified hormone participating in iron metabolism. Approximately, a 10% increase in plasma erythroferrone was associated with a 5% increase in RBC lifespan. In addition, RBC lifespan was 18.7% shorter in females compared with males. Out of 24 subjects, 16 had hemoglobin concentrations predicted within 95% prediction intervals. The median absolute prediction error was 15.9% (interquartile range, 9.5 to 24.7%). We demonstrated that REBEL coupled with the population modeling technique can be used effectively to estimate RBC lifespan. Then, individual parameters can be used to predict future hemoglobin concentrations in ESRD patients.
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http://dx.doi.org/10.1208/s12248-020-0424-9 | DOI Listing |
Clin Chim Acta
January 2025
Department of Internal Medicine, Hakuhokai Central Hospital, 4-23-1 Higahisonodacho, Amagasaki 661-0953, Japan.
Background: HbA1c levels are affected by both glycemia and erythrocyte lifespan. Erythrocyte creatine (EC) indicates mean erythrocyte age. Although EC levels differ between adolescent males and females, with higher levels in females, the mechanism remains unclear.
View Article and Find Full Text PDFSci Rep
December 2024
Laboratory of Biochemistry and Vascular Biology, Center for Biologic Evaluation and Research, Food and Drug Administration, Bethesda, 20993, MD, USA.
Blood storage lesion induces cytosolic and membrane changes driven in part by hemoglobin (Hb) oxidation reactions within red blood cells (RBCs). A novel gel formulation containing the antioxidant curcuminoids in a biocompatible solvent system was used to deliver curcumin into RBCs. Incubation of peroxide treated RBCs stored in PBS with curcumin gel led to a reduction in prooxidant ferrylHb and recovery in ATP.
View Article and Find Full Text PDFMetabolites
December 2024
IVF Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, School of Health Sciences, University of Thessaly, 41110 Larissa, Greece.
Discov Oncol
December 2024
Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, 6205, Bangladesh.
Numerous chemotherapeutic agents are currently employed in cancer treatment, but many are associated with significant side effects. This study aims to identify a novel anticancer drug that minimizes or eliminates these adverse effects. The anticancer activity of the Rhodium (III) complex cis-[RhLI]I was evaluated through both in vivo and in vitro functional assays.
View Article and Find Full Text PDFCells
November 2024
Dipartimento di Scienze di Laboratorio ed Ematologiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, 00168 Rome, Italy.
Transfusion guidelines worldwide include recommendations regarding the storage length, irradiation, or even donor cytomegalovirus serostatus of red blood cell (RBC) units for anemic neonates. Nevertheless, it is totally overlooked that RBCs of these patients fundamentally differ from those of older children and adults. These differences vary from size, shape, hemoglobin composition, and oxygen transport to membrane characteristics, cellular metabolism, and lifespan.
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