author_facet Liang, C. T.
Balakir, R. A.
Barnes, J.
Sacktor, B.
Liang, C. T.
Balakir, R. A.
Barnes, J.
Sacktor, B.
author Liang, C. T.
Balakir, R. A.
Barnes, J.
Sacktor, B.
spellingShingle Liang, C. T.
Balakir, R. A.
Barnes, J.
Sacktor, B.
American Journal of Physiology-Cell Physiology
Responses of chick renal cell to parathyroid hormone: effect of vitamin D
Cell Biology
Physiology
author_sort liang, c. t.
spelling Liang, C. T. Balakir, R. A. Barnes, J. Sacktor, B. 0363-6143 1522-1563 American Physiological Society Cell Biology Physiology http://dx.doi.org/10.1152/ajpcell.1984.246.5.c401 <jats:p>The in vitro incubation of chick renal cells with parathyroid hormone (PTH) resulted in the inhibition of Na+-dependent phosphate uptake when the cells were isolated from 1,25-dihydroxycholecalciferol 1,25-dihydroxycholecalciferol [1,25-(OH)2D3]-repleted chicks but not when the cells came from vitamin D-deficient animals. Na+-independent phosphate and Na+-dependent alpha-methylglucoside uptakes were not affected by PTH and the vitamin D status of the bird. The activation of chick renal cell adenylate cyclase by PTH was significantly blunted when the enzyme was from vitamin D-deficient animals relative to the activation of the enzyme from repleted cockerels. This alteration was due to a change in maximum velocity of the system rather than an effect on the affinity for hormone. The response of adenylate cyclase to other hormones, e.g., prostaglandin E2, and activators, e.g., 5' -guanylyl-imidodiphosphate and forskolin, was not affected by the vitamin D status of the animal. PTH had little effect in activating protein kinase in cells from vitamin D-deficient chicks. In cells from vitamin D-sufficient birds, PTH caused a fourfold increase in adenosine 3',5'-cyclic monophosphate (cAMP)-dependent protein kinase. Dibutyryl cAMP inhibited Na+-dependent phosphate uptake by cells from 1,25-(OH)2D3-repleted animals, but the cyclic nucleotide had no effect on phosphate uptake in cells from vitamin D-depleted chicks. This finding suggests that the loss of PTH receptor sites known to be concomitant with the secondary hyperparathyroidism associated with vitamin D deficiency is only a partial explanation for the failure of PTH to inhibit phosphate uptake in cells from vitamin D-deficient animals.(ABSTRACT TRUNCATED AT 250 WORDS)</jats:p> Responses of chick renal cell to parathyroid hormone: effect of vitamin D American Journal of Physiology-Cell Physiology
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series American Journal of Physiology-Cell Physiology
source_id 49
title Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_unstemmed Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_full Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_fullStr Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_full_unstemmed Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_short Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_sort responses of chick renal cell to parathyroid hormone: effect of vitamin d
topic Cell Biology
Physiology
url http://dx.doi.org/10.1152/ajpcell.1984.246.5.c401
publishDate 1984
physical C401-C406
description <jats:p>The in vitro incubation of chick renal cells with parathyroid hormone (PTH) resulted in the inhibition of Na+-dependent phosphate uptake when the cells were isolated from 1,25-dihydroxycholecalciferol 1,25-dihydroxycholecalciferol [1,25-(OH)2D3]-repleted chicks but not when the cells came from vitamin D-deficient animals. Na+-independent phosphate and Na+-dependent alpha-methylglucoside uptakes were not affected by PTH and the vitamin D status of the bird. The activation of chick renal cell adenylate cyclase by PTH was significantly blunted when the enzyme was from vitamin D-deficient animals relative to the activation of the enzyme from repleted cockerels. This alteration was due to a change in maximum velocity of the system rather than an effect on the affinity for hormone. The response of adenylate cyclase to other hormones, e.g., prostaglandin E2, and activators, e.g., 5' -guanylyl-imidodiphosphate and forskolin, was not affected by the vitamin D status of the animal. PTH had little effect in activating protein kinase in cells from vitamin D-deficient chicks. In cells from vitamin D-sufficient birds, PTH caused a fourfold increase in adenosine 3',5'-cyclic monophosphate (cAMP)-dependent protein kinase. Dibutyryl cAMP inhibited Na+-dependent phosphate uptake by cells from 1,25-(OH)2D3-repleted animals, but the cyclic nucleotide had no effect on phosphate uptake in cells from vitamin D-depleted chicks. This finding suggests that the loss of PTH receptor sites known to be concomitant with the secondary hyperparathyroidism associated with vitamin D deficiency is only a partial explanation for the failure of PTH to inhibit phosphate uptake in cells from vitamin D-deficient animals.(ABSTRACT TRUNCATED AT 250 WORDS)</jats:p>
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author Liang, C. T., Balakir, R. A., Barnes, J., Sacktor, B.
author_facet Liang, C. T., Balakir, R. A., Barnes, J., Sacktor, B., Liang, C. T., Balakir, R. A., Barnes, J., Sacktor, B.
author_sort liang, c. t.
container_issue 5
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container_title American Journal of Physiology-Cell Physiology
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description <jats:p>The in vitro incubation of chick renal cells with parathyroid hormone (PTH) resulted in the inhibition of Na+-dependent phosphate uptake when the cells were isolated from 1,25-dihydroxycholecalciferol 1,25-dihydroxycholecalciferol [1,25-(OH)2D3]-repleted chicks but not when the cells came from vitamin D-deficient animals. Na+-independent phosphate and Na+-dependent alpha-methylglucoside uptakes were not affected by PTH and the vitamin D status of the bird. The activation of chick renal cell adenylate cyclase by PTH was significantly blunted when the enzyme was from vitamin D-deficient animals relative to the activation of the enzyme from repleted cockerels. This alteration was due to a change in maximum velocity of the system rather than an effect on the affinity for hormone. The response of adenylate cyclase to other hormones, e.g., prostaglandin E2, and activators, e.g., 5' -guanylyl-imidodiphosphate and forskolin, was not affected by the vitamin D status of the animal. PTH had little effect in activating protein kinase in cells from vitamin D-deficient chicks. In cells from vitamin D-sufficient birds, PTH caused a fourfold increase in adenosine 3',5'-cyclic monophosphate (cAMP)-dependent protein kinase. Dibutyryl cAMP inhibited Na+-dependent phosphate uptake by cells from 1,25-(OH)2D3-repleted animals, but the cyclic nucleotide had no effect on phosphate uptake in cells from vitamin D-depleted chicks. This finding suggests that the loss of PTH receptor sites known to be concomitant with the secondary hyperparathyroidism associated with vitamin D deficiency is only a partial explanation for the failure of PTH to inhibit phosphate uptake in cells from vitamin D-deficient animals.(ABSTRACT TRUNCATED AT 250 WORDS)</jats:p>
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spelling Liang, C. T. Balakir, R. A. Barnes, J. Sacktor, B. 0363-6143 1522-1563 American Physiological Society Cell Biology Physiology http://dx.doi.org/10.1152/ajpcell.1984.246.5.c401 <jats:p>The in vitro incubation of chick renal cells with parathyroid hormone (PTH) resulted in the inhibition of Na+-dependent phosphate uptake when the cells were isolated from 1,25-dihydroxycholecalciferol 1,25-dihydroxycholecalciferol [1,25-(OH)2D3]-repleted chicks but not when the cells came from vitamin D-deficient animals. Na+-independent phosphate and Na+-dependent alpha-methylglucoside uptakes were not affected by PTH and the vitamin D status of the bird. The activation of chick renal cell adenylate cyclase by PTH was significantly blunted when the enzyme was from vitamin D-deficient animals relative to the activation of the enzyme from repleted cockerels. This alteration was due to a change in maximum velocity of the system rather than an effect on the affinity for hormone. The response of adenylate cyclase to other hormones, e.g., prostaglandin E2, and activators, e.g., 5' -guanylyl-imidodiphosphate and forskolin, was not affected by the vitamin D status of the animal. PTH had little effect in activating protein kinase in cells from vitamin D-deficient chicks. In cells from vitamin D-sufficient birds, PTH caused a fourfold increase in adenosine 3',5'-cyclic monophosphate (cAMP)-dependent protein kinase. Dibutyryl cAMP inhibited Na+-dependent phosphate uptake by cells from 1,25-(OH)2D3-repleted animals, but the cyclic nucleotide had no effect on phosphate uptake in cells from vitamin D-depleted chicks. This finding suggests that the loss of PTH receptor sites known to be concomitant with the secondary hyperparathyroidism associated with vitamin D deficiency is only a partial explanation for the failure of PTH to inhibit phosphate uptake in cells from vitamin D-deficient animals.(ABSTRACT TRUNCATED AT 250 WORDS)</jats:p> Responses of chick renal cell to parathyroid hormone: effect of vitamin D American Journal of Physiology-Cell Physiology
spellingShingle Liang, C. T., Balakir, R. A., Barnes, J., Sacktor, B., American Journal of Physiology-Cell Physiology, Responses of chick renal cell to parathyroid hormone: effect of vitamin D, Cell Biology, Physiology
title Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_full Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_fullStr Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_full_unstemmed Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_short Responses of chick renal cell to parathyroid hormone: effect of vitamin D
title_sort responses of chick renal cell to parathyroid hormone: effect of vitamin d
title_unstemmed Responses of chick renal cell to parathyroid hormone: effect of vitamin D
topic Cell Biology, Physiology
url http://dx.doi.org/10.1152/ajpcell.1984.246.5.c401