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Article
Reference range for 24-h urine calcium, calcium/creatinine ratio, and correlations with calcium absorption and serum vitamin D metabolites in normal women
A study of 959 black and white women shows that the normal range for 24-h urine calcium excretion in white women is 30–300 mg and 10–285 mg in black women. Clinical laboratories use a normal range for 24-h uri...
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Article
Open AccessEpitaxial growth of iridate pyrochlore Nd2Ir2O7 films
Epitaxial films of the pyrochlore Nd2Ir2O7 have been grown on (111)-oriented yttria-stabilized zirconia (YSZ) substrates by off-axis sputtering followed by post-growth annealing. X-ray diffraction (XRD) results d...
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Article
Solar-Cycle Characteristics Examined in Separate Hemispheres: Phase, Gnevyshev Gap, and Length of Minimum
According to research results from solar-dynamo models, the northern and southern hemispheres may evolve separately throughout the solar cycle. The observed phase lag between the northern and southern hemisphe...
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Article
Effect of Vitamins D2 and D3 Supplement Use on Serum 25OHD Concentration in Elderly Women in Summer and Winter
Vitamin D2 and D3 are generally considered equipotent in humans. A few studies have reported that serum 25OHD levels are higher in vitamin D3- compared with vitamin D2-supplemented subjects. As both vitamin D2 an...
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Chapter
Tibolone Is Effective in Preventing Postmenopausal Bone Loss
Tibolone is a synthetic compound, which binds to estrogen, progesterone, and androgen receptors. Previous studies have shown favorable effects on bone, the vagina, the cardiovascular system, climacteric sympto...
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Article
The Role of Calcitriol in the Treatment of Osteoporosis
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Article
Effect of Vitamin D Receptor Genotypes on Calcium Absorption, Duodenal Vitamin D Receptor Concentration, and Serum 1,25 Dihydroxyvitamin D Levels in Normal Women
It is well established that bone mineral density is under strong genetic control. Recently it was reported that the Bsm I restriction fragment length polymorphism of the vitamin D receptor (VDR) gene could ac...
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Article
Biogeography of toxic dinoflagellates in the genusAlexandrium from the northeastern United States and Canada
Twenty-eight strains of toxic dinoflagellates in the genusAlexandrium from the northeastern United States and Canada were characterized on the basis of morphology, bioluminescence capacity, mating compatibility, ...
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Chapter
Calcium and Vitamin D
Osteoporosis is a major health issue in all Western countries, affecting approximately 25% to 30% of all postmenopausal women. It is not a disease with a single cause but rather a heterogeneous disease process...
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Article
Prevention of bone loss in postmenopausal and senile osteoporosis with vitamin D analogues
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Article
Ecotypic differentiation in the marine diatom Skeletonema costatum: influence of light intensity on the photosynthetic apparatus
Three genetically distinct clones of Skeletonema costatum (Grev.) Cleve were grown at 20°C under high (274 μE m-2 s-1) and low (27 μE m-2 s-1) light conditions and their photoadaptive photosynthetic responses com...
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Article
Observations of sequential changes in bone mass in postmenopausal women: a controlled trial of oestrogen and calcium therapy
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Article
The effect of 1α-hydroxycholecalciferol and hormone therapy on the calcium balance of post-menopausal osteoporosis
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Article
Calcium absorption in the elderly
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Chapter
Calcium Absorption in the Elderly
Calcium absorption can be measured in at least three ways — by the balance procedure, by intubation of the small intestine with a double or triple lumen tube and by the oral administration of radioactive calcium.
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Chapter and Conference Paper
Effect of Various Therapies on Bone Loss in Women
The treatment of patients with the osteoporotic crush fracture syndrome will remain unsatisfactory until the pathogenesis of the condition is fully understood and precise methods are available to monitor the e...