The mechanism of adaptation of intestinal calcium absorption to low dietary calcium.
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Adaptation, Physiological↗
Biomedical subjects
H F DeLuca
Publications and source records attributed to H F DeLuca.
25,26-dihydroxycholecalciferol, a metabolite of vitamin D3 with intestinal calcium transport activity.
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Alcohols↗
Effects of 25-hydroxycholecalciferol in patients with familial hypophosphatemia and vitamin-D-resistant rickets.
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Alkaline Phosphatase↗
Metaboism of 25-hydroxycholecalciferol in target and nontarget tissues.
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Animals↗
On the subcellular location of vitamin D metabolites in intestine.
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Animals↗
21,25-dihydroxycholecalciferol. A metabolite of vitamin D3 preferentially active on bone.
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Animals↗
25-hydroxydihydrotachysterol. Synthesis and biological activity.
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Animals↗
Vitamin D stimulation of calcium-dependent adenosine triphosphatase in chick intestinal brush borders.
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Adenosine Triphosphatases↗
Metabolism and subcellular location of 25-hydroxycholecalciferol in intestinal mucosa.
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Animals↗
Metabolism and biological activity of vitamin D.
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Animals↗
Biological activity of 25-hydroxyergocalciferol in rats.
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Animals↗
Treatment of vitamin D-resistant hypoparathyroidism with 25-hydroxycholecalciferol.
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Adolescent↗
Treatment of renal osteodystrophy with 25-hydroxycholecalciferol.
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Animals↗
Vitamin D metabolism and its relationship to familial hypophosphatemia.
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Cholecalciferol↗
25-hydroxycholecalciferol: direct effect on calcium transport.
The perfused small intestine from a vitamin D deficient rat exhibits about one-half the calcium transport of the intestine from a rat given vitamin D. These levels of calcium transport can be maintained for at least 4 hours. Addition of 2.5 micrograms of 25-hydroxycholecalciferol added to the vitamin D deficient intestine via the arterial blood perfusate induces a rise in calcium transport to +D levels within 2 hours. In contrast, 250 micrograms of vitamin D(3) given in the same manner has no effect on the calcium transport level overa 4-hour period. These data provide strong evidence that 25-hydroxycholecalci ferol represents the metabolically active form of vitamin D(3).
Animals↗
In vitro production of 25-hydroxycholecalciferol.
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Animals↗
Vitamin D stimulated, calcium-dependent adenosine triphosphatase from brush borders of rat small intestine.
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Adenosine Triphosphatases↗