Yazarlar : Blasi B, D'Alessandro A, Ramundo N, Zolla L.

Yayın : Transfus Med.

Yayın Yılı : 2012

Pubmed Linki : http://www.ncbi.nlm.nih.gov/pubmed/22394111

Konu : Transfüzyon

Literatür İçeriği :  

Abstract

Aim: In this study, we performed weekly assessment of morphology-related parameters through monitoring of CPD-SAGM leuco-filtered erythrocyteconcentrates 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 erythrocytesedimentation 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.

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