Restoration of phosphaturia in phosphate-deprived rats in the presence of both parathyroid hormone and phosphate infusion.
The present study tested the hypothesis that the combination of parathyroid hormone and phosphate infusion would be phosphaturic in phosphate-deprived rats. Clearance experiments were performed in Sprague-Dawley rats fed a low-phosphate diet for 4 days. The animals were first given a phosphate infusion and then administered parathyroid hormone. The reverse experiment was also performed in a second group of rats by giving the hormone first followed by a phosphate infusion. There was no increase in phosphate excretion in response to phosphate infusion or parathyroid hormone given alone. However, the combination of parathyroid hormone and phosphate infusions, given in either order, was phosphaturic in phosphate-deprived rats.
D000818:Animals; D007263:Infusions, Parenteral; D007700:Kinetics; D008297:Male; D010280:Parathyroid Glands / Q000502:physiology; D010281:Parathyroid Hormone / Q000494:pharmacology*; D010710:Phosphates / Q000008:administration & dosage / Q000172:deficiency* / Q000652:urine; D051381:Rats; D011919:Rats, Inbred Strains; D013965:Thyroidectomy
D010281:Parathyroid Hormone; D010710:Phosphates