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- W2608578009 abstract "Water transport across the red blood cell (RBC) membrane is an essential cell function that needs to be preserved during ex vivo storage. Progressive biochemical depletion during storage can result in significant conformational and compositional changes to the membrane. Characterizing the changes to RBC water permeability can help in evaluating the quality of stored blood products and aid in the development of improved methods for the cryopreservation of red blood cells. This study aimed to characterize the water permeability (Lp), osmotically inactive fraction (b), and Arrhenius activation energy (Ea) at defined storage time-points throughout storage and to correlate the observed results with other in vitro RBC quality parameters. RBCs were collected from age- and sex-matched blood donors. A stopped flow spectrophotometer was used to determine Lp and b by monitoring changes in hemoglobin autofluorescence when RBCs were exposed to anisotonic solutions. Experimental values of Lp were characterized at three different temperatures (4, 20 and 37 °C) to determine the Ea. Results showed that Lp, b, and Ea of stored RBCs significantly increase by day 21 of storage. Degradation of the RBC membrane with length of storage was seen as an increase in hemolysis and supernatant potassium, and a decrease in deformability, mean corpuscular hemoglobin concentration and supernatant sodium. RBC osmotic characteristics were shown to change with storage and correlate with changes in RBC membrane quality metrics. Monitoring water parameters is a predictor of membrane damage and loss of membrane integrity in ex vivo stored RBCs." @default.
- W2608578009 created "2017-05-05" @default.
- W2608578009 creator A5013074011 @default.
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- W2608578009 date "2017-06-01" @default.
- W2608578009 modified "2023-09-28" @default.
- W2608578009 title "Red blood cell membrane water permeability increases with length of ex vivo storage" @default.
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- W2608578009 doi "https://doi.org/10.1016/j.cryobiol.2017.04.009" @default.
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