Bissinger, R.* ; Schaefer, L.* ; Bohnert, B.N. ; Schork, A. ; Hörber, S. ; Peter, A. ; Qadri, S.M.* ; Birkenfeld, A.L. ; Heyne, N. ; Bakchoul, T.* ; Wieder, T.* ; Artunc, F.
GFR is a key determinant of red blood cell survival in anemia associated with progressive CKD.
Kidney Int. Rep. 10, 730-742 (2025)
Introduction: Anemia is a common and clinically significant complication observed in patients with chronic kidney disease (CKD), resulting from complex interactions between renal dysfunction, erythropoietin (EPO) deficiency, and altered iron metabolism. In murine CKD models, red blood cell (RBC) death or eryptosis, characterized by exposure of phosphatidylserine (PS) on the outer membrane of RBCs, was observed to drive anemia. However, there is limited research that has investigated this phenomenon in patients with non–dialysis-dependent CKD (NDD-CKD). Methods: In this cross-sectional cohort study, we describe the relationship between RBC death and anemia in all stages of NDD-CKD (n = 122). Blood samples from 133 healthy blood donors were additionally analyzed as controls. Results: Patients with CKD had a significantly lower hemoglobin (Hb) concentration (12.4 [interquartile range: 11.1–13.7] g/dl) when compared with the healthy group (13.8 [13.0–14.8] g/dl, P < 0.001). Hb concentrations exhibited a significant positive correlation with the estimated glomerular filtration rate (eGFR) across the entire cohort (r = 0.5, P < 0.001). RBC death rates, quantified by the binding of freshly isolated RBCs to the ligand annexin V using flow cytometry (FACS), were significantly increased by approximately 1.4-fold in patients with CKD compared with the RBC death rates in healthy blood donors. RBC death correlated with the glomerular filtration rate (GFR) stage but not with the albuminuria stage of CKD, the degree of anemia, and serum iron concentration. Using multiple linear regression, eGFR was identified as the sole independent predictor of RBC death with an inverse relationship. Conclusion: RBC death is stimulated in progressive NDD-CKD, possibly contributing to the development of renal anemia.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Anemia ; Chronic Kidney Disease ; Egfr ; Eryptosis ; Phosphatidylserine ; Red Blood Cells; Chronic Kidney-disease; Suicidal Erythrocyte Death; Quality-of-life; Eryptosis; Health; Controversies; Conclusions; Management; Outcomes
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Language
english
Publication Year
2025
Prepublished in Year
2024
HGF-reported in Year
2024
ISSN (print) / ISBN
2468-0249
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2468-0249
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Volume: 10,
Issue: 3,
Pages: 730-742
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Elsevier
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Ste 800, 230 Park Ave, New York, Ny 10169 Usa
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Peer reviewed
POF-Topic(s)
90000 - German Center for Diabetes Research
Research field(s)
Helmholtz Diabetes Center
PSP Element(s)
G-502400-001
Grants
Canadian Blood Services (CBS)
IZKF - medical faculty of Tubingen university
German Research Foundation
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Erfassungsdatum
2025-01-28