Vitamin D Kidney Phosphate Reabsorption. Lated forms of vitamin d represent the major circulating vitamin d metabolites and a direct action of 25hcc has been demonstrated on bone 13 and intestine 14. With continuous infusion of vitamin d the increase resorption once again decreased after 3 4 hours.
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With continuous infusion of vitamin d the increase resorption once again decreased after 3 4 hours. The kidney plays a vital role in the conservation of calcium and phosphorus. Important proteins that significantly change the efficiency of calcium and phosphorus transport are localized along the.
Vitamin d deficiencies have been reported in all types of people but especially in the elderly people with darker skin color african americans and people with a higher body mass index obesity.
The kidney responds to various hormones including 1α 25 dihydroxyvitamin d 1α 25 oh 2 d by increasing or decreasing the efficiency of calcium and phosphorus reabsorption along the nephron. Numerous mechanisms are involved in maintaining serum phosphate concentration in the normal range mainly by regulating phosphate absorption in the gut and tubular phosphate reabsorption in the kidney. The results show that vitamin d increased tubular phosphate reabsorption in normal rats as well as in parathyroidectomized rats and in rats with rickets. The kidney adapts its tubular capacity to transport inorganic phosphate p i according to the dietary supply of p i in both intact and thyropara thyroidectomized tptx rats.
