Spectrin oxidation correlates with membrane vesiculation in stored RBCs
GM Wagner, DT Chiu, JH Qju, RH Heath and BH Lubin
An increase in spectrin oxidation in a variety of erythrocytes displaying a
tendency to vesiculate has been previously described. To explore this
relationship in more detail, we have studied blood stored in
citrate-phosphate-dextrose-adenine under blood bank conditions because, in
this system, vesiculation occurs slowly. Vesiculation was quantitated by
measuring acetylcholinesterase release, and the extent of spectrin
oxidation was detected by using thiol-disulfide exchange chromatography. A
strong correlation (r = .92) was found between the extent of spectrin
oxidation and vesiculation when blood from five donors was analyzed at
weekly intervals during storage. This strongly suggests that spectrin
oxidation plays a role in the formation of spectrin-free vesicles, thereby
limiting the shelf life of stored blood.
Volume 69,
Issue 6,
pp. 1777-1781,
06/01/1987
Copyright © 1987 by The American Society of Hematology