PMID: 1319Aug 1, 1975

The oxygen transport system of red blood cells during diabetic ketoacidosis and recovery

Diabetologia
J Ditzel, E Standl

Abstract

Daily evaluations of 8 newly detected ketoacidotic diabetics showed the Bohr-effect of haemoglobin to be decreased by 50% while erythrocyte 2,3-DPG was decreased below 10 mumoles/g Hb. 2,3-DPG correlated strongly with pH during acidosis and with plasma inorganic phosphate (Pi) subsequently to the first insulin administration. Oxygen affinity of haemoglobin, measured as P50 act pH, was unchanged in ketoacidosis compared to the time, however, P50 act pH fell striking (p less than 0.001) and remained decreased up to 7 days depending upon the resynthesis of 2,3-DPG in relation to Pi. The Hill-coefeficient in reflecting the slope of the oxygen dissociation curve was diminished in ketoacidosis (p less than 0.005), and decreased further after pH-normalization (p less than 0.005). There was a close association of n with 2,3-DPG (p less than 0.001) and additionally with Pi at 2,3-DPG-levels below 10 mumoles/g Hb. Based on these findings a decreased erythrocyte oxygen release of one fifth during acidosis and more than one third after pH-correction can be hypothesised. In view of the intimate relation of Pi to the oxygen transport system it is suggesed that treatment of ketoacidosis should include Pi-sugstitution.

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Citations

Apr 1, 1986·Diabetologia·J Møller-PetersenJ Ditzel
Jul 18, 1978·Pflügers Archiv : European journal of physiology·W Jelkmann, C Bauer
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Related Concepts

Diphosphoglyceric Acids
Erythrocytes
Eryhem
Hydrogen-Ion Concentration
Novolin
Dioxygen
Orthophosphate
Diabetic Ketoacidosis

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