Acute renal denervation decreases tubular phosphate reabsorption.

Acute renal denervation (DNX) has been reported to increase urinary phosphate (Pi) excretion in rats with intact parathyroid glands and also in rats which were thyroparathyroidectomized (TPTX). The present study was performed to determine the effects of acute renal denervation on the tubular transport of Pi in rats in the absence of parathyroid hormone (PTH) and in rats with constant PTH levels. In TPTX rats, the reabsorbed Pi normalized for the glomerular filtration rate (Reab Pi/GFR) was 2.