MINERAL METABOLISM | ScienceGate

Vitamin D is essential for maintaining calcium homeostasis and optimizing bone health. Its inadequacy is related to many factors including dietary intake. The aim of the present study was to evaluate serum 25(OH)D and its relationship with nutrient intakes in postmenopausal Brazilian women with osteoporosis. This cross-sectional study comprised 45 free-living and assisted elderly at São Paulo Hospital. Three-day dietary records were used to assess dietary intakes. Bone mineral density was measured with a dual-energy X-ray absorptiometer (DXA). Blood and urine sample were collected for analysis of biochemical markers of bone and mineral metabolism. Insufficiency of vitamin D was observed in 24.4% of the women and optimal levels (≥ 50 nmol/L) were observed in 75.6%. Parathyroid hormone was above the reference range in 51% of the participants. The mean calcium (724 mg/day) and vitamin D (4.2 μ g/day) intakes were lower than the value proposed by The Food and Nutrition Board and sodium intake was more than two-fold above the recommendation. Higher levels of serum 25(OH)D were inversely associated with sodium intake. Dietary strategies to improve serum vitamin D must focus on increasing vitamin D intake and should take a reduction of sodium intake into consideration.

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Mineral metabolism, cortical volumetric bone mineral density and fracture risk in childhood chronic kidney disease

Bone Abstracts ◽

10.1530/boneabs.2.oc29 ◽

2013 ◽

Author(s):

Denburg Michelle ◽

Tsampalieros Anne ◽

de Boer Ian ◽

Shults Justine ◽

Kalkwarf Heidi ◽

...

Keyword(s):

Bone Mineral Density ◽

Chronic Kidney Disease ◽

Kidney Disease ◽

Fracture Risk ◽

Bone Mineral ◽

Mineral Metabolism ◽

Volumetric Bone Mineral Density ◽

Mineral Density

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Special features of body composition and bone mineral metabolism in children with primary nephrotic syndrome

Endocrine Abstracts ◽

10.1530/endoabs.49.ep218 ◽

2017 ◽

Author(s):

Natalia Volkova ◽

Angelika Soltsava

Keyword(s):

Body Composition ◽

Nephrotic Syndrome ◽

Bone Mineral ◽

Mineral Metabolism ◽

Primary Nephrotic Syndrome ◽

Bone Mineral Metabolism

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Vitamin D Provision in High-Yield Dairy Cows During the Winter Housing Period

Agricultural science and practice ◽

10.15407/agrisp1.01.042 ◽

2014 ◽

Vol 1 (1) ◽

pp. 42-46

Author(s):

L. Yuskiv ◽

V. Vlizlo

Keyword(s):

Vitamin D ◽

Alkaline Phosphatase Level ◽

Mineral Metabolism ◽

Physiological State ◽

Blood Parameters ◽

Postnatal Period ◽

High Yield ◽

Oral Supplementation ◽

Calcium Phosphorus ◽

Vitamin D 3

Aim. To investigate the vitamin D status in highly productive cows during winter housing period and effect of cholecalciferol by various ways of vitamin D 3 injection to cows in last days of gestation and after calving. Methods. Enzyme-linked immunoassay, spectrophotometry. Results. It has been stated that intramuscular injection of cholecalciferol into cows caused increase of the vitamin D 3 active metabolite – 25-OHD 3 , calcium, phosphorus and magnesium levels together with decrease of alkaline phosphatase level in pre- and post-natal periods. Oral supplementation makes little infl uence on the studied blood parameters of cows. Conclusions. Extrabuccal administration and oral supplementation of cholecalciferol in winter housing period to high-yield cows in the last days of gestation and after calving is accompanied by increased levels of its metabolites and their effect on mineral metabolism in the postnatal period. The nature of these changes depends on the mode of vitamin D administration and the physiological state of the cows.

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