Abstract:
BACKGROUND:A storage period of 42 days has been approved by the FDA for RBCs stored in NUTRICEL (AS-3). This study was undertaken to provide data to the FDA about the feasibility of salvaging AS-3 RBCs at the end of their storage period by rejuvenation and freezing, and to evaluate the effect of rejuvenation on indicators of RBC function. STUDY DESIGN AND METHODS:Healthy adults (n = 22) donated 450 mL of whole blood, and RBC components were prepared at two study sites. The components were stored at 1 to 6 degrees C for either 41 days (nonrejuvenated frozen controls, n = 6) or 42 days (rejuvenated frozen study group, n = 10; nonrejuvenated nonfrozen controls, n = 6). Rejuvenated study components and nonrejuvenated frozen controls were stored at -70 degrees C for longer than 2 weeks. Frozen units were then deglycerolized and kept for an additional 24 hours at 1 to 6 degrees C. RESULTS:2,3-DPG, and ATP were reduced after 42-day storage to near 0 and 65 percent, respectively, of their original values. After rejuvenation and deglycerolization, the mean ATP level was 146 percent and the mean 2,3-DPG was 115 percent. The percent freeze-thaw-wash recovery was similar for rejuvenated and nonrejuvenated RBCs. Trace amounts of hypoxanthine and inosine were detected in rejuvenated units. The mean 24-hour survival (single- or double-label technique) of all components exceeded 75 percent. The t1/2 of study and control RBCs was similar. CONCLUSION:The ability of 42-day-old AS-3 RBCs to deliver oxygen after rejuvenation and freezing is not impaired. These data indicate that rejuvenated AS-3 RBCs can provide a safe and beneficial blood component immediately upon infusion.
journal_name
Transfusionjournal_title
Transfusionauthors
Lockwood WB,Hudgens RW,Szymanski IO,Teno RA,Gray ADdoi
10.1046/j.1537-2995.2003.00551.xsubject
Has Abstractpub_date
2003-11-01 00:00:00pages
1527-32issue
11eissn
0041-1132issn
1537-2995pii
551journal_volume
43pub_type
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