Effects of one-year treatment with estrogens on bone mass, intestinal calcium absorption, and 25-hydroxyvitamin D-1α-hydroxylase reserve in postmenopausal osteoporosis

1988 ◽  
Vol 42 (2) ◽  
pp. 77-86 ◽  
Author(s):  
Roberto Civitelli ◽  
Donato Agnusdei ◽  
Paolo Nardi ◽  
Fabio Zacchei ◽  
Louis V. Avioli ◽  
...  
Keyword(s):  
Bone Mass ◽  
Postmenopausal Osteoporosis ◽  
Calcium Absorption ◽  
Intestinal Calcium Absorption ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
One Year

COMPARISON BETWEEN THE 5,6-CIS AND 5,6-TRANS ISOMERS OF 25-HYDROXYVITAMIN D3 IN CHRONIC HYPOPARATHYROIDISM

1977 ◽  
Vol 86 (4) ◽  
pp. 784-793 ◽  
Author(s):  
Gerd Offermann ◽  
Dieter Kraft
Keyword(s):  
Serum Calcium ◽  
Calcium Release ◽  
Calcium Absorption ◽  
Intestinal Calcium Absorption ◽  
Normal Range ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
One Year ◽  
Hydroxyproline Excretion ◽  
Chronic Hypoparathyroidism

ABSTRACT Five patients with chronic post-operative hypoparathyroidism were treated with 450 μg/day 5,6-trans-25-hydroxyvitamin D3 (5,6-trans-25OHD3) for 14 days, and the treatment was continued with 150 μg/day for one year. At the end of this period the patients received 450 μg/day 5,6-cis-25-hydroxyvitamin D3 (5,6-cis-25OHD3) for 14 days. Comparison of the effects of both isomers revealed a similar ability to enhance intestinal calcium absorption and to normalize serum calcium; serum phosphate and alkaline phosphatase, however, remained unaffected. Urinary phosphate and hydroxyproline excretion decreased on the cis-isomer and increased on the trans-isomer. During treatment with the lower dose of 5,6-trans-25OHD3 intestinal calcium absorption remained in the normal range for one year, whereas the serum calcium decreased to the levels observed before administration of 450 μg/day within 6 weeks. The results suggest that in hypoparathyroidism 5,6-cis-25OHD3 and 5,6-trans-25OHD3 are equally effective on serum calcium and on intestinal calcium absorption, but that their mode of action on renal phosphate handling and on calcium release from bone is different.

25-Hydroxyvitamin D level does not reflect intestinal calcium absorption: an assay using strontium as a surrogate marker

2014 ◽  
Vol 33 (3) ◽  
pp. 319-328 ◽  
Author(s):  
Marília Brasilio Rodrigues Camargo ◽  
Tatiane Vilaça ◽  
Lilian Fukusima Hayashi ◽  
Olguita G. Ferreira Rocha ◽  
Marise Lazaretti-Castro
Keyword(s):  
Calcium Absorption ◽  
Surrogate Marker ◽  
Intestinal Calcium Absorption ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

Does the relationship between 25-hydroxyvitamin D status and bone mass vary according to skin color in adults? Results of a Brazilian population-based study

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Kátia Josiany Segheto ◽  
Leidjaira Lopes Juvanhol ◽  
Danielle Cristina Guimarães da Silva ◽  
Cristiane Junqueira de Carvalho ◽  
Fernanda Hansen ◽  
...  
Keyword(s):  
Bone Mass ◽  
Skin Color ◽  
Population Based ◽  
Brazilian Population ◽  
Population Based Study ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
The Relationship

Associations of Dietary Calcium, Vitamin D, Milk Intakes, and 25-Hydroxyvitamin D With Bone Mass in Spanish Adolescents: The HELENA Study

2013 ◽  
Vol 16 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Theodora Mouratidou ◽  
German Vicente-Rodriguez ◽  
Luis Gracia-Marco ◽  
Inge Huybrechts ◽  
Isabelle Sioen ◽  
...  
Keyword(s):  
Vitamin D ◽  
Bone Mass ◽  
Dietary Calcium ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
Helena Study

SAT0460 Low Bone Mass in Patients with Systemic Sclerosis: Relationships with Dickkopf-1 Levels and 25-Hydroxyvitamin D Status

2014 ◽  
Vol 73 (Suppl 2) ◽  
pp. 760.2-760
Author(s):  
B. Seriolo ◽  
R. Brizzolara ◽  
S. Soldano ◽  
A. Casabella ◽  
L. Molfetta ◽  
...  
Keyword(s):  
Systemic Sclerosis ◽  
Bone Mass ◽  
Low Bone Mass ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
Dickkopf 1

Contributions of 25-hydroxyvitamin D, co-morbidities and bone mass to mortality in Japanese postmenopausal women

Bone ◽  
2009 ◽  
Vol 44 (1) ◽  
pp. 168-172 ◽  
Author(s):  
Tatsuhiko Kuroda ◽  
Masataka Shiraki ◽  
Shiro Tanaka ◽  
Hiroaki Ohta
Keyword(s):  
Bone Mass ◽  
Postmenopausal Women ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D
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