OBJECTIVE To evaluate the factors that determine bone mineral density at axial and appendicular sites in normal men. DESIGN Measurement of bone mineral density of the radius by single photon absorptiometry and of the lumbar spine and hip by dual photon absorptiometry to assess their relation with various determinants of bone mineral density. Dietary calcium was assessed from a questionnaire v...

BACKGROUND Demineralisation and bone density loss during immobilisation are known phenomena. However information concerning the extent of calcium loss during immobilisation remains inconsistent within literature. This may explain why treatment of bone loss and prevention of further demineralisation is often initiated only when spontaneous bone fracture occurred.Continuous renal replacement ther...

1. The capacity of low-density lipoprotein-cholesterol (40 micrograms/ml) to stimulate both the phosphoinositide cycle and the dislocation of the phospholipid- and calcium-dependent protein kinase C activity from the cytosolic to the membranous compartment in human circulating lymphocytes has been studied. 2. Pretreatment of lymphocytes with pertussis toxin inhibited significantly the low-densi...

[Purpose] The purpose of this study was to assess the possible role of physical activities, calcium consumption and lifestyle factors in both bone mineral density and bone metabolism indices in 350 young adult volunteers. [Subjects and Methods] All volunteers were recruited for the assessment of lifestyle behaviors and physical activity traits using validated questioners, and bone mineral densi...

Calcium is a critical component in many cellular functions. It serves many important functions such as signal transduction, contraction of muscles, enzyme function, and maintaining potential difference across excitable membranes. We examine the self-organization of calcium waves in a heart cell and how they propagate through the cell. Specifically, the crucial parameter of flux density that con...

The study features of bone tissue mineral density and their correlation with blood levels of calcium, magnesium and non-organic phosphorus in young pregnant women. Clinical and ambulatory examination of 120 pregnant women of ages 1625 was made. Estimation of bone tissue mineral density and blood levels of calcium, phosphorus and magnesium was performed during the pregnancy stage of 12 to 28 wee...

In this study, calcium-phosphate (Ca-P) and graphene oxide (GO)/ calcium-phosphate (Ca-P) coatings were electrodeposited with different pulsed current densities on TiO2 nanotubes. Results showed that the co-electrodeposition rate in the presence of GO, especially at low current densities of 2 and 5 mA/cm2, significantly decreased. This might be due to the large size of GO sheets as compared to ...

PURPOSE The target of our work was to study several biochemical parameters in phospho-calcic and bone metabolism in blood and urine and the bone mineral density of women with recurrent calcium nephrolithiasis. MATERIALS AND METHODS We conducted a cross-sectional study with a control group of 85 women divided into 3 groups: group 1 consisted of 25 women without a history of nephrolithiasis, gr...

The effects of calcium antagonists (verapamil, diltiazem, and nicardipine) on j3-adrenergic receptors of cultured cardiac myocytes isolated from neonatal rat ventricle were studied with the hydrophilic ligand [3H]CGP-12177, which identifies cell surface-bound a-receptors. The three calcium antagonists suppressed spontaneous beating of the myocytes, increased the number of P-receptors, but did n...