A patient with Crohn's disease receiving vitamin D and calcium had normal serum calcium levels when serum magnesium was low. Hypercalcaemia was precipitated when supplemental magnesium was given. The reason why serum calcium was initially normal is probably related to the effect of magnesium deficiency in reducing serum calcium level.

The objective of this study was to elucidate the mechanisms associated with the reciprocal relation between magnesium and calcium on vascular smooth muscle tone in bovine pulmonary artery and vein. Rapid removal of magnesium from Krebs-bicarbonate medium used to bathe isolated rings of precontracted artery or vein caused transient endotheliumand calciumdependent relaxation and cyclic GMP accumu...

The binding of dihydropyridine (PN200-110) to skeletal muscle microsomes (which were 84% sealed inside-out vesicles) was not influenced by the addition of calcium or magnesium nor by addition of their chelators (EDTA or EGTA) unless the vesicles were pretreated with the calcium-magnesium ionophore A23187 and EDTA to remove entrapped cations. Separation of inside-out vesicles from right-side-out...

Plasma calcium and inorganic phosphorus concentrations were significantly lower in 14 female rabbits during the last 20 days of pregnancy and the first 20 days of lactation than in 11 non-pregnant, non-lactating controls. Plasma magnesium level was similar in both groups. Plasma calcium and inorganic phosphorus levels were very low (5.8 +/- 0.4 and 2.9 +/- 0.3 mg/dl, respectively) in 6 lactatin...

Marine biomineralization is a globally important biological and geochemical process. Understanding the mechanisms controlling precipitation of calcium carbonate [CaCO3] within calcifying fluid marine organisms, such as corals, crustose coralline algae, foraminifera, presents one most elusive, yet relevant areas research, due to often-impenetrable ability measure process in situ. The CaCO3 assum...

Magnesium (Mg2+) is one of the most common impurities in calcite and known to have a non-linear impact on solubility magnesian calcites. Using molecular dynamics (MD), we observed that Mg2+ impacts overall surface energies, local free energy profiles, interfacial water density, structure and, at higher concentrations, it also causes crystal deformation. Low Mg concentrations did not alter struc...

Papaya (Carica papaya L.) is a crop of great economic importance. It the fourth most produced tropical fruit in world. The substantial problems faced during its production are pests and diseases, which why it has been planted under greenhouse conditions. However, required that plants not be height to need tall greenhouses. Therefore, this research aims evaluate salinity effect identify nutritiv...

1, The daily excretion of oxalate, calcium, magnesium and creatinine was determined in fifty-two normal men and sixty-five male patients with calcium oxalatecontaining renal stones. 2. Direct relationships were found between calcium and oxalate excretion, magnesium and oxalate excretion and calcium and magnesium excretion in both normal subjects and stone-formers. The significance of these rela...

Magnesium is one of the most abundant ions present in living cells and its plasma concentration is remarkably constant in healthy subjects. Plasma and intracellular magnesium concentrations are tightly regulated by several factors. Among them, insulin seems to be one of the most important. In fact, in vitro and in vivo studies have demonstrated that insulin may modulate the shift of magnesium f...

BACKGROUND Conflicting results on the relationship between the hardness of drinking water and mortality related to ischemic heart disease (IHD) or stroke have been reported. OBJECTIVES We investigated the possible association between tap water calcium or magnesium concentration and total hardness and IHD mortality or stroke mortality. METHODS In 1986, a cohort of 120,852 men and women aged ...