Blood preservation. XLIII. Studies on the ascorbate mechanisms of maintaining red cell 2,3-DPG
| Autor: | R. B. Dawson, R. T. Hershey, Dabezies M, Miller Rm, CS Myers |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Blood Glucose
medicine.medical_specialty Preservative Erythrocytes Time Factors Immunology Blood preservation Iodoacetates Ascorbic Acid Phosphates chemistry.chemical_compound Adenosine Triphosphate Internal medicine medicine Immunology and Allergy Humans Citrates Red Cell Chemistry Hematology Glutathione Metabolism Hydrogen-Ion Concentration Diphosphoglyceric Acids Red blood cell Endocrinology medicine.anatomical_structure Glucose Biochemistry Blood Preservation |
| Zdroj: | Transfusion. 20(3) |
| ISSN: | 0041-1132 |
| Popis: | Our previous experiments on the mechanisms of ascorbate's effect on the red blood cell failed to show an effect of iodoacetate (IA), a sulfydryl inhibitor. In this study, in contrast to the previous, iodoacetate (85 micromolar) was seen to prevent continued red blood cell metabolism. During the first weeks there was an absence of a continual fall in pH; ATP levels were depressed below half normal; and 2,3-DPG levels fell to very low values within the first week. ATP was best maintained in the control preservative and next best maintained, at adequate levels, with ascorbate, 5 mM, with and without glutathione, 5 mM. 2,3-DPG levels were well maintained with ascorbate and ascorbate with glutathione. Poor ATP maintenance and rapid decreases in 2,3-DPG were observed with iodoacetate, IA plus ascorbate, and IA plus ascorbate and glutathione. |
| Databáze: | OpenAIRE |
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