To clarify the role of the intestine, kidney, and bone in maintaining calcium homeostasis during
pregnancy and lactation and after the resumption of menses, a longitudinal comparison …

We measured the free fraction of 25-hydroxyvitamin D (25OHD) in human serum and
determined that 25OHD bound to a component with an affinity constant of 7 × 10 8 M -1 and a …

RANKL and OPG gene expressions were measured with and without PTH at different stages
of osteoblast development. Mouse stromal cells were cultured in osteoblast differentiating …

The hyperparathyroidism characteristic of patients with moderate renal insufficiency could
be caused by decreases in the plasma concentration of ionized calcium (Ca++) evoked by: (a) …

To determine whether the mouse loses bone with aging and whether the changes mimic
those observed in human aging, we examined the changes in the tibial metaphysis and …

We asked this question: in normal humans, is either a normal dietary intake or normal serum
concentration of phosphorus a determinant of the serum concentration of 1,25(OH)2D? In …

The effects of vitamin D deficiency on fertility, reproductive capacity and on fetal and neonatal
development were investigated. Female weanling rats were maintained on either a vitamin …

We evaluated bone disease in eight white men between the ages of 49 and 61 years who
had been abusing alcohol for at least 10 years. The mean density of vertebral cancellous …

Bone serves the triple functions of maintaining the internal structural support for the body,
housing the hematopoeitic system, and providing the reservoir for calcium and phosphate …

We recently reported that in healthy men, changes in the production rate (PR) of 1,25-dihydroxyvitamin
D [1,25-(OH)2D] accounted for the 80% increase and the 30% decrease in its …