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M9550804.TXT
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1995-03-25
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Document 0804
DOCN M9550804
TI Loss of red blood cell viability associated with limited thermal
inactivation of extracellular HIV-1.
DT 9505
AU Stromberg RR; Kuypers FA; Sawyer L; Friedman LI; Cole M; Tran K; Hanson
CV; Product Development Department, Holland Laboratory, American Red;
Cross, Rockville, MD 20855.
SO Vox Sang. 1994;67(3):260-6. Unique Identifier : AIDSLINE MED/95167804
AB The effects of incubation at mildly elevated temperatures on HIV-1
inactivation and in vitro red blood cell properties were investigated.
Red cells (55% Hct) were leukodepleted (3 log10) by filtration,
maintained at 45 or 47 degrees C for 4 or 8 h, and then stored at 4
degrees C. Hemolysis was twice that of controls after 42-day storage for
samples treated for 4 h at 45 degrees C, and five times larger for
samples heated at 47 degrees C. There was also a significant increase in
the rate of potassium loss, an early decrease in ATP levels, and an
initial drop in pH for samples treated at either temperature. Larger
differences were observed for samples exposed to these elevated
temperatures for 8 h. Osmotic deformability curves obtained by
ektacytometry showed dramatic decreases in red cell deformability at
both temperatures and for both time periods. HIV-1 inactivation in red
cells treated at 45 degrees C (approximately 0.25 log10/h) was
considerably less than that obtained in tissue culture medium (1-2
log10/h). Since the decrease in red cell deformability is likely to
indicate reduced red cell function and survival, and the rate of HIV-1
inactivation is low, mild heat treatment is not an adequate process for
viral inactivation of red cell products.
DE Blood/VIROLOGY Blood Preservation/*METHODS Erythrocyte Deformability
*Erythrocytes *Heat Hemolysis Human Hydrogen-Ion Concentration
*HIV-1 Osmotic Fragility JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).