Carp eggs, fertilized in vitro, were allowed to develop in fresh water with magnesium concentrations varying from 0.001 to 0.100 mmol l-1. Magnesium concentrations below 0.010 mmol l-1 seriously impeded carp embryonic development: the incidence of deformed larvae and mortality increased steeply to 100% at water magnesium concentrations of 0.001 mmol l-1. Thus, early life stages of carp require ...

1. The effects of vitamin D and its hydroxylated derivatives on calcium and magnesium absorption have been examined in 47 balance studies on patients with various disorders of calcium or bone metabolism. 2. Vitamin D significantly increased the mean net absorption of calcium and also the calcium balance. The mean net absorption of magnesium was also significantly increased although the rise was...

Both clinical and subclinical deficiency of calcium and magnesium may cause problems in dairy cows. Clinical hypocalcaemia most commonly occurs at calving and onset of lactation and is associated with milk fever, while clinical hypomagnesaemia occurs under certain dietary conditions. Factors affecting the calcium and magnesium status in dairy cows were examined in this thesis. The effect of die...

BACKGROUND Previously, we showed that black girls retained more calcium than white girls did and that salt loading negatively affected calcium retention. Racial differences likely exist in other bone minerals also, such as magnesium, in response to salt loading during growth. OBJECTIVE We studied racial differences in magnesium metabolism in response to dietary sodium and calcium during rapid...

At calving time, the cows were monitored and blood samples were taken from jugular vein of 38 cows with parturient paresis and 38 healthy ones. The levels of calcium, phosphorus, magnesium, sodium, potassium, chloride, glucose, triglyceride, cholesterol, albumin, globulin and A/G ratio were assessed to find the correlation between the degree of hypocalcemia and other parameters. According to ca...

Adsorption of calcium and magnesium on a sandstone from a bicarbonate solution has been demonstrated. On elution with water saturated with carbon dioxide, the magnesium passes off first. The chromatographic separation of magnesium from calcium can thus occur under conditions which can prevail in nature. We ask: Does chromatography play a part in geochemistry? More specifically we ask: Can calci...

Abstract The objective of this research was to look into the binary exchange in four calcareous soils. ion adsorption carried by Batch equilibrium method used saturate soil samples with sodium, potassium, calcium and magnesium ions, separately, get Sodium–Soil, Potassium–Soil, Calcium–Soil Magnesium–Soil. mean Kd (L kg –1 ) scores various systems were arranged as follows: Calcium – Magnesium (1...

In an earlier, rather extensive, publication in this journal on the "Functional Pathology of Hyperparathyroidism " (1) no mention wasmade of magnesium metabolism. Data have now been collected permitting a contribution to this phase of the subject. The methods of study were the same as described in the previous paper (1). Magnesium determinations were made by the procedure outlined by Briggs (2)...

Magnesium and calcium deficiency in humans is related to a number of pathological phenomena such as arrhythmia, osteoporosis, migraine, and fatal myocardial infarction. Clinically established metabolic acidosis induces renal losses of calcium. In normal subjects, even moderate increases in net endogenous acid production (NEAP) impair renal calcium reabsorption but no information is available wh...

The purpose of this study was to determine whether chronic periodontitis can stand behind modifications in the salivary and blood concentration of some bivalent cations (Calcium, Magnesium, Zinc and Copper). For this purpose, we formed a group of 30 adult patients with clinically onset chronic periodontitis, and another one of 30 healthy patients as control. Both groups were free from acute ora...