ArticleMedical principles and practice : international journal of the Kuwait University, Health Science Centre2019
Altered Expression Levels of CD59, but Not CD55, on Red Blood Cells in Stored Blood.
Article in Medical principles and practice : international journal of the Kuwait University, Health Science Centre, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveRed blood cells (RBCs) in storage undergo structural and biochemical changes that may cause functional effects. Studies exploring structural changes affecting the expression levels of CD55 and CD59 on RBCs are limited. The aim of this study was to investigate the pattern of CD55 and CD59 expression on RBCs in stored blood from Arab donors. MATERIALS AND
methodsFlow-cytometric analysis was performed on RBCs from 92 packed RBC (PRBC) units, stored for varying times, and from 56 nonstored RBC from healthy controls using the commercial REDQUANT kit.
resultsThe proportions of CD55- and CD59-deficient RBCs from stored PRBC units did not significantly differ when compared with those from healthy controls; however, the mean fluorescent intensity (MFI) of CD59 expression, but not MFI of CD55 expression, on RBCs from stored PRBC units was significantly reduced when compared to the expression of RBCs from healthy controls (p = 0.02). MFI of CD55 expression on RBCs from PRBC units did not significantly differ among the 3 groups of stored RBC; however, there was a statistically significant time-dependent preferential decline in MFI of CD59 expression on RBCs from stored PRBC units (p < 0.01).
conclusionThere is a preferential time-dependent decline in the expression of CD59, but not of CD55, on stored RBCs, the in vivo significance of which in relation to the response to PRBC transfusion needs further investigation.
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