The Effect of Human Serum Albumin and Hematocrit on the Cake Collapse Temperature of Lyophilized Red Blood Cells Public Deposited

http://ir.library.oregonstate.edu/concern/articles/0v838532n

This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Mary Ann Liebert, Inc., and can be found at:  http://www.liebertpub.com/overview/biopreservation-and-biobanking/110/

Access to this item has been restricted by repository administrators at the request of the publisher, Mary Ann Liebert, Inc., until September 29, 2016.

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  • Freeze-drying, or lyophilization, has shown great promise in addressing many of the logistical challenges of storing and preserving red blood cells (RBCs). A crucial part of any RBC lyophilization protocol is the primary drying temperature, which affects the sample drying rate and the dried cake’s ability to form a stable glassy solid. Primary drying is most efficient just below the temperature at which the porous structure of the cake begins to collapse, known as the cake collapse temperature. In this short report we utilize freeze-drying microscopy to examine the effects of human serum albumin (HSA) and hematocrit on the cake collapse temperature. Increasing the hematocrit from 0% to 20% significantly raised the cake collapse temperature from -37.8 °C to -34.8 °C. Addition of 5% HSA to a 20% hematocrit RBC suspension further increased the cake collapse temperature to -20.4 °C. This data provides a basis for future study of the relationship between cake collapse and overall cell survival, with the object of building a clinically-viable RBC lyophilization protocol.
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  • Runyon, D. E., & Higgins, A. Z. (2015). The Effect of Human Serum Albumin and Hematocrit on the Cake Collapse Temperature of Lyophilized Red Blood Cells. Biopreservation and Biobanking, 13(5), 376-378. doi:10.1089/bio.2015.0013
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