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W Roth

Publications and source records attributed to W Roth.

At least 91 records · Page 5Linked to original sources
PubMed1976

[The effect of inosine, inorganic phosphates and pyruvate on erythrocyte glycolysis metabolites under conditions of preservation].

Human erythrocytes were stored as resuspensions in solutions containing citrate (Z), inosine + citrate (I), inosine + phosphate (IP), and inosine + phosphate + pyruvate (IPP). The storage was made at + 4 degrees C for 6 weeks; the initial pH-value amounted to 7.4 at + 4 degrees C. The cellular concentrations of 2.3 DPG, ATP, G6P, FDP and DOAP + GAP were determined. The following results were obtained: 1. During the storage in stored Z-blood the 2.3 DPG concentration will fall below 10% of its initial value; it will remain nearly unchanged in stored I-blood and will increase to 170% in stored IP-blood, to 270% of its initial value in stored IPP-blood. 2. The ATP concentration of cells will fall to about 50% of its initial value at the beginning of the storage of all stored blood. After that it will only increase to about 80% of its initial value in stored IP- and IPP-blood. 3. During the storage the G6P concentration will increase to the highest degree in stored IPP-blood and if high pyruvate concentrations are not present, it will have a reciprocal behaviour towards the FDP and triosephosphate level. The results were discussed in view of the regulation of glycolysis under storage conditions.

Adenosine Triphosphate↗
PubMed1976

[Autologous transfusion of erythrocytes with high or low concentration of 2,3-diphosphoglycerate. Survival rate and time and hemoglobin-oxygen affinity].

1. In human erythrocytes the 2.3 DPG concentration was increased three to fourfold of the norm as IPP re-suspension by an incubation time of four hours at 37 degrees C or as ACD-AG blood was lowered below 20% of the norm respectively. After an autologous transfusion the 24 hours' surviving rate and the apparent half survival time of cells as well as the affinity of haemoglobin to oxygen in the total blood were measured. 2. The 24 hours' surviving rate for fresh erythrocytes with increased 2.3 DPG and ATP concentration amounts to 73% and the apparent half survival time amounts to 6 days. If erythrocytes are stored for four weeks as IPP resuspension at 4 degrees C, the 24 hours' surviving rate is 59%. Erythrocytes from fresh ACD-AG blood with lowered 2.3 DPG and a normal ATP concentration have a 24 hours' surviving time of 85% and an apparent half survival time of 24 days. 3. After autologous transfusion of 400 ml of erythrocytes with increased 2.3 DPG concentration the P50 value of the total blood will increase by 3 mm of Hg, after administering 400 ml of erythrocytes with lowered 2.3 DPG concentration it will fall by 1.8 mm of Hg. 4. The findings are discussed in connection with the significance of the changes of affinity of haemoglobin to oxygen produced by 2.3 DPG for the oxygen supply of tissues and under the aspect of using stored blood with increased 2.3 DPG concentration for practical purposes.

Blood Transfusion, Autologous↗