Estrogen treatment improves calcium malabsorption induced by surgical or natural
menopause, but the mechanisms involved are still under debate, with both increased …

A double-blind, placebo-controlled study on 21 postmenopausal osteoporotic women was
performed in order to assess the effects of 1 year estrogen therapy (Premarin, 1.25 mg/day) …

Age-related decline in intestinal calcium (Ca) absorption often occur in postmenopausal
osteoporotic women. The impaired Ca absorption can be corrected by estrogen (E2) …

Intestinal calcium absorption decreases with aging, but it is unclear whether this is
attributable to an age-related intestinal resistance to 1, 25-dihydroxyvitamin D [1, 25 (OH) …

Although aged rats reportedly have reduced intestinal vitamin D receptor (VDR)
concentrations, it is unclear whether an analogous age-related defect occurs in man. Thus …

The sex steroid 17β‐estradiol (17β‐E2) has a broad range of actions, including effects on
calcium and bone metabolism. This study with 3‐month‐old Brown Norway rats was …

Menopause and estrogen deficiency are associated with apparent intestinal resistance to
vitamin D, which can be reversed by estrogen replacement. The in vivo influence of …

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 …

To test the hypothesis that estrogen modulates the metabolism of 25-hydroxyvitamin D (25
(OH) D) to 1, 25-dihydroxyvitamin D (1, 25 (OH) 2 D) and 24, 25-dihydroxyvitamin D (24, 25 …

Osteoporotic women have decreased calcium absorption and decreased serum 1, 25-
dihydroxyvitamin D [1, 25-(0H) 2D] and are usually in negative calcium balance. Estrogen …