Metabolic impact of red blood cell exchange with rejuvenated red blood cells in sickle cell patients

Transfusion
Sarah GehrkeAngelo D'Alessandro

Abstract

Red blood cell exchange (RCE) transfusions are a mainstay in the treatment of sickle cell anemia (SCA), and allow a temporary restoration of physiological parameters with respect to erythrocyte oxygen carrying capacity and systems metabolism. Recently, we noted that 1) RCE significantly impacts recipients' metabolism in SCA; 2) fresh and end-of-storage red blood cell (RBC) units differently impact systems of metabolism in healthy autologous recipients; and 3) phosphate/inosine/pyruvate/adenine (PIPA) solution reverses the metabolic age of stored RBCs. Therefore, we hypothesized that RCE with PIPA-treated RBC units could further increase the metabolic benefits of RCE in SCA patients. Circulating plasma and erythrocytes were collected from patients with SCA before and after RCE, with either conventional or PIPA-treated RBC units, prior to metabolomics analyses. Consistent with prior work, RCE significantly decreased circulating levels of markers of systemic hypoxemia (lactate, succinate) and decreased plasma levels of acyl-carnitines and amino acids. However, PIPA-treated exchanges were superior to untreated RCEs, with a higher energy state and an increased capacity to activate the pentose phosphate pathway and glutamine metaboli...Continue Reading

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Citations

Apr 16, 2020·Journal of Clinical Medicine·Klétigui Casimir DembéléJuan Manuel Chao de la Barca
Nov 17, 2020·Frontiers in Physiology·Lorenzo BertoloneAngelo D'Alessandro
Jan 15, 2020·Transfusion Medicine and Hemotherapy : Offizielles Organ Der Deutschen Gesellschaft Fur̈ Transfusionsmedizin Und Immunham̈atologie·Georg StussiAndreas Holbro

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