Red blood cell storage and cell morphology - PubMed (original) (raw)
Clinical Trial
Red blood cell storage and cell morphology
B Blasi et al. Transfus Med. 2012 Apr.
Abstract
Aim: In this study, we performed weekly assessment of morphology-related parameters through monitoring of CPD-SAGM leuco-filtered erythrocyte concentrates from blood withdrawal until the 42nd day of storage.
Background: Liquid storage of red blood cells (RBCs) delivers a blood-derived therapeutic, which is safe, available, effective and affordable for most patients who need transfusion therapy in developed countries. However, a growing body of accumulating controversial evidences, from either biochemical or retrospective clinical studies, prompted safety concerns about longer stored RBCs.
Methods: Statistical image analysis through scanning electron microscope was coupled to osmotic fragility and erythrocyte sedimentation rate.
Results: We could observe that by day 21 more than 50% of RBCs displayed non-discocyte phenotypes. This observation was related to an increase in osmotic fragility, which was totally overlapped in day 0 controls and day 7 RBCs while only slightly augmented in day 14 samples. Cation dysregulation (pH internal/external alteration and potassium) might both reflect and trigger a negative feedback loop with metabolic fluxes and membrane cation pumps.
Conclusion: Morphology parameters suggest that significant alterations to RBC morphology over storage duration occur soon after the 14th day of storage, as to become significant enough within the 21st day.
© 2012 The Authors. Transfusion Medicine © 2012 British Blood Transfusion Society.
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