Application of Phosphoenolpyruvate into Canine Red Blood Cell Cryopreservation with Hydroxyethyl Starch
Phosphoenolpyruvate (PEP) is a phosphorylated glycolytic intermediate that can penetrate the RBC membrane and be metabolized to 2,3-DPG and ATP. In this study, we evaluated the effects of PEP treatment on canine red blood cells (RBCs) cryopreserved with 12.5% (w/v) HES. RBCs were incubated for 30, 6...
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Published in | Cryo-Letters Vol. 26; no. 1; pp. 1 - 6 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
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England
Cryoletters
01.01.2005
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Abstract | Phosphoenolpyruvate (PEP) is a phosphorylated glycolytic intermediate that can penetrate the RBC membrane and be metabolized to 2,3-DPG and ATP. In this study, we evaluated the effects of PEP treatment on canine red blood cells (RBCs) cryopreserved with 12.5% (w/v) HES. RBCs were incubated
for 30, 60, and 90 min at 37°C with PEP solution containing 60 mM mannitol, 30 mM sodium chloride, 25 mM glucose, 1 mM adenine and 50 mM PEP (340 mosm/kg), pH 6.0 and then cryopreserved in liquid nitrogen with 12.5% (w/v) HES for 2 weeks. 2,3-DPG and saline stabilities of the PEP treated
groups were increased and osmotic fragility indices were significantly decreased compared to the untreated control group. There were no differences in 2,3-DPG levels within the PEP treated groups with different PEP incubation times. These results suggest that PEP treatment may be beneficial
for the cryopreservation of canine RBCs with HES. |
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AbstractList | Phosphoenolpyruvate (PEP) is a phosphorylated glycolytic intermediate that can penetrate the RBC membrane and be metabolized to 2,3-DPG and ATP. In this study, we evaluated the effects of PEP treatment on canine red blood cells (RBCs) cryopreserved with 12.5% (w/v) HES. RBCs were incubated
for 30, 60, and 90 min at 37°C with PEP solution containing 60 mM mannitol, 30 mM sodium chloride, 25 mM glucose, 1 mM adenine and 50 mM PEP (340 mosm/kg), pH 6.0 and then cryopreserved in liquid nitrogen with 12.5% (w/v) HES for 2 weeks. 2,3-DPG and saline stabilities of the PEP treated
groups were increased and osmotic fragility indices were significantly decreased compared to the untreated control group. There were no differences in 2,3-DPG levels within the PEP treated groups with different PEP incubation times. These results suggest that PEP treatment may be beneficial
for the cryopreservation of canine RBCs with HES. Phosphoenolpyruvate (PEP) is a phosphorylated glycolytic intermediate that can penetrate the RBC membrane and be metabolized to 2,3-DPG and ATP. In this study, we evaluated the effects of PEP treatment on canine red blood cells (RBCs) cryopreserved with 12.5% (w/v) HES. RBCs were incubated for 30, 60, and 90 min at 37 degrees C with PEP solution containing 60 mM mannitol, 30 mM sodium chloride, 25 mM glucose, 1 mM adenine and 50 mM PEP (340 m osm/kg), pH 6.0 and then cryopreserved in liquid nitrogen with 12.5% (w/v) HES for 2 weeks. 2,3-DPG and saline stabilities of the PEP treated groups were increased and osmotic fragility indices were significantly decreased compared to the untreated control group. There were no differences in 2,3-DPG levels within the PEP treated groups with different PEP incubation times. These results suggest that PEP treatment may be beneficial for the cryopreservation of canine RBCs with HES. |
Author | Itamoto, Kazuhito Taura, Yasuho Kim, Heejaung Nakaichi, Munekazu Sumida, Sajio Une, Satoshi |
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SubjectTerms | 2,3-Diphosphoglycerate - metabolism Animals Blood Preservation - instrumentation Blood Preservation - methods Canine Red Blood Cells Cryopreservation Cryopreservation - instrumentation Cryopreservation - methods Cryoprotective Agents - metabolism Cryoprotective Agents - pharmacology Dogs Erythrocytes - cytology Erythrocytes - metabolism Hydroxyethyl Starch Hydroxyethyl Starch Derivatives - pharmacology Osmotic Fragility Phosphoenolpyruvate Phosphoenolpyruvate - metabolism Phosphoenolpyruvate - pharmacology |
Title | Application of Phosphoenolpyruvate into Canine Red Blood Cell Cryopreservation with Hydroxyethyl Starch |
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