Maturation‐dependent changes of the rabbit reticulocyte energy metabolism
- 19 June 1989
- journal article
- Published by Wiley in FEBS Letters
- Vol. 250 (1) , 40-44
- https://doi.org/10.1016/0014-5793(89)80680-5
Abstract
Rabbit reticulocytes were separated into four fractions of different maturity in order to investigate the changes of cellular respiration and glycolysis, adenine nucleotides, 2,3-biphosphoglycerate (2,3-BPG) as well as cyclic AMP level during the transition from the youngest to the most mature reticulocytes. A significant reduction of total oxygen consumption, mainly due to depression of coupled respiration was found. The decline of respiration was accompanied by a 2-fold increase of the rate of aerobic glycolysis indicating a reduced Pasteur effect during maturation. A decline of ATP and an increase of ADP concentration was found. The oxygen-delivery capacity of the red cells increased by about 26% caused by an increase of the 2,3-BPG level of about 2 mmol/l cells. Cyclic AMP level in the fraction of youngest reticulocytes was about 60-fold higher than that in mature rabbit erythrocytes. The biggest decline of cyclic AMP was registered during the transition from youngest to the intermediate stage of maturity.Keywords
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