The central role of vitamin D in calcium homeostasis is to increase calcium absorption from
the intestine. This article describes the early work that served as the foundation for the initial …

Context: Despite common use of supplemental vitamin D2 in clinical practice, the
associations of serum vitamin D2 concentrations with other vitamin D metabolites and total …

On the basis of recent findings that adult black women had similar calcium absorption but
higher levels of 1, 25-dihydroxyvitamin D [1, 25-(OH) 2D] than white women, we …

The influence of the serum binding protein (DBP) for vitamin D and its metabolites on the
concentration of its main ligands, 25-hydroxyvitamin D3 (25-OHD3) and 1, 25 …

Recent advances in bone and calcium (Ca) metabolism have relied upon genetically
modified mice. However, although human studies have identified gender as an important …

The serum vitamin D2 and vitamin D3 metabolite concentrations and intestinal absorption of
vitamin D2 were determined in healthy ambulatory and chronically institutionalized elderly …

We have developed a method for the measurement of 1, 25-dihydroxyvitamin D [1, 25-(OH)
2D] which is based on the selective internalization and subsequent binding of 1, 25-(OH) 2D …

Background: The mechanism and clinical significance of low circulating 25-hydroxyvitamin
D [25 (OH) D] in obese people are unknown. Low total 25 (OH) D may be due to low vitamin …

1. Radio-calcium absorption, plasma 25-hydroxyvitamin D [25-(OH) D] and 1, 25-
dihydroxyvitamin D [1, 25-(OH) 2D] concentrations were measured in 19 elderly women …

Moderate Vitamin D deficiency causes secondary hyperparathyroidism and bone loss,
leading to osteoporosis and fractures. Controversy exists which circulating level of 25 …