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Vijayan V, Greite R, Schott S, Doricic J, Madyaningrana K, Pradhan P, Martens J, Blasczyk R, Janciauskiene S, Immenschuh S. Determination of free heme in stored red blood cells with an apo-horseradish peroxidase-based assay. Biol Chem 2022; 403:1091-1098. [PMID: 36054292 DOI: 10.1515/hsz-2022-0184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 08/15/2022] [Indexed: 12/19/2022]
Abstract
Transfusion effectiveness of red blood cells (RBCs) has been associated with duration of the storage period. Storage-dependent RBC alterations lead to hemolysis and release of toxic free heme, but the increase of free heme levels over time is largely unknown. In the current study, an apo-horseradish peroxidase (apoHRP)-based assay was applied to measure levels of free heme at regular intervals or periodically in supernatants of RBCs until a maximum storage period of 42 days. Free heme levels increased with linear time-dependent kinetics up to day 21 and accelerated disproportionally after day 28 until day 42, as determined with the apoHRP assay. Individual time courses of free heme in different RBC units exhibited high variability. Notably, levels of free hemoglobin, an established indicator of RBC damage, and those of total heme increased with continuous time-dependent linear kinetics over the entire 42 day storage period, respectively. Supernatants from RBC units with high levels of free heme led to inflammatory activation of human neutrophils. In conclusion, determining free heme in stored RBCs with the applied apoHRP assay may become feasible for testing of RBC storage quality in clinical transfusion medicine.
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Affiliation(s)
- Vijith Vijayan
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Robert Greite
- Department of Nephrology, Hannover Medical School, D-30625 Hannover, Germany
| | - Sebastian Schott
- Department of Nephrology, Hannover Medical School, D-30625 Hannover, Germany
| | - Julian Doricic
- Department of Nephrology, Hannover Medical School, D-30625 Hannover, Germany
| | - Kukuh Madyaningrana
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.,Faculty of Biotechnology, Universitas Kristen Duta Wacana, 55224 Yogyakarta, Indonesia
| | - Pooja Pradhan
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Jörg Martens
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Rainer Blasczyk
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | | | - Stephan Immenschuh
- Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
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