[P-31 NMR studies of in vivo regeneration of preservative-induced changes in 2,3-diphosphoglycerate content of erythrocytes].

: In this study, we analyzed the regeneration kinetics and the reversibility of the 2.3-DPG reduction in stored red cells after transfusion. Within 3 h after transfusion the 2.3-DPG levels raised up to 40% of the patients' prior 2.3-DPG concentration, although the 2.3-DPG content of the transfused red cells was less than 10% of before. The complete regeneration of the 2.3-DPG concentration occurred after 36 to 48 h after transfusion. There was a close correlation of the results obtained by P-31-NMR and enzymatic determination of DPG.