Erythrocyte sodium content, sodium transport (ouabain-sensitive efflux rate of sodium,
and ouabain-sensitive efflux rate constant of sodium) 3H ouabain binding capacity and sodium-potassium-activated ouabain-sensitive adenosine
triphosphatase (Na+, K+-ATPase) activity were measured in 18 lean subjects and 25 obese subjects. The mean
erythrocyte sodium content, sodium transport and ouabain binding capacity of obese
subjects were the same as in lean subjects. There was no relationship between obesity
index (wt/ht2) and sodium transport. We conclude that erythrocyte sodium transport in most obese
patients is normal.
Obesity
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Erythrocytes
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Ouabain Binding
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Na+, K+-ATPase
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Sodium Pump