Metablism of aldosterone in dogs with renovascular hypertension (38476).

The rate of metabolism of aldosterone was measured in seven normal dogs, 4 dogs with chronic renal hypertension and five dogs with malignant renal hypertension. Tritiated aldosterone was injected intravenously and the rate of disappearance of authentic aldosterone was determined. The disappearance curves were resolved into two exponential components and the plasma half-life was measured from the slow component which reflects the rate of metabolism of aldosterone. The half-life of aldosterone was essentially the same for the three groups of dogs. It is concluded, therefore, that the rate of aldosterone metabolism is normal in dogs with experimental renal hypertension.