Correlation of discocyte frequency and ATP concentration in preserved blood: a morphological indicator of red cell viability
Braz. j. med. biol. res
;
30(6): 745-7, jun. 1997. ilus, graf
Article
Dans Anglais
| LILACS
| ID: lil-194174
RESUMO
Red blood cells (RBC) are viable if kept in an adequate preservative solution, although gradual changes in morphology and metabolism may occur. There is a gradual decrease in adenosine-5'-triphosphate (ATP) cocentration, pH, glucose consumption, and enzyme activity during preservation. The normal discocyte shapes are initially replaced by echimocytes and stomatocytes and, at final stages, by spherocytes, the last before eplenic sequestration. Post-transfusional survival has been correlated with the ATP concentration. RBC preserved in ADSOL, a solution containing adenine, dextrose, sodium chloride, and mannitol, are viable for transfusion for up to 6 weeks. Erythrocytes from 10 blood units taken from healthy adult donors were preserved for 12 weeks in ADSOL at 4 graus Celsius. We now report a significant correlation (r2 = 0.98) between the percentage of discocytes (89 to 7 percent) and ATP (100 to 10 percent) concentration in ADSOL-preserved RBC. The results suggest that the percent of discocyte shapes used as an indicator OF ATP concentration may be a useful indicator for quality control of RBC viability in centers which have limited assay facilites.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Conservation de sang
/
Transfusion sanguine
/
Techniques in vitro
/
Adénosine triphosphate
/
Érythrocytes
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Braz. j. med. biol. res
Thème du journal:
Biologie
/
Médicament
Année:
1997
Type:
Article
/
Congrès et conférence
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