... amounts of calcium and magnesium, which are not invested in any mineral form. This study examined the effect of calcium and magnesium depletion on the structural and mechanical properties of the cement. Divalent ion removal by chelating with EDTA led to a partial collapse of cement architecture and cement...

.... and other gastropods ( Sminia and Boer, 1973 ; Sminia and Vlugt van Dalen, 1977 ; Hazprunar, 1996 ; Taylor and Anstiss, 1999 ; Albrecht et al., 2001 ). gastropod mollusc Haliotis iris haemocyanin oxygen-binding Bohr effect ionic effector association constant calcium magnesium lactate...

...Jan H. Mol; Wim Atsma; Gert Flik; Hans Bouwmeester; Jan W. M. Osse ABSTRACT The accumulation of calcium, magnesium and phosphorus was measured during an 8-week period in the early life stages of the air-breathing armoured catfish Megalechis personata acclimated to low-mineral fresh water (0.073...

...Marcel J. C. Bijvelds; Joan A. Van Der Velden; Zvonimir I. Kolar; Gert Flik ABSTRACT The magnesium handling of freshwater teleost fish is discussed, with an emphasis on the role of branchial, intestinal and renal transport. In response to the eminent threat of constant diffusive losses of minerals...

... concentration of magnesium in the blood on the external concentration of calcium for crabs acclimated to 2 ‰ salinity. Statistics and sample sizes are as described in Fig. 1. In crabs acclimated to 2 ‰ salinity and held at the lowest calcium concentration (0.10 mmol l −1 ) for 2 days, the mass of calcium...

...David G. Butler ABSTRACT The corpuscles of Stannius are linked to the renal transport of magnesium in freshwater North American eels. The urinary magnesium concentration and rate of magnesium excretion increased 3 days after the corpuscles had been removed, a trend which continued throughout a 14...

...J. A. Van Der Velden; J. A. Groot; G. Flik; P. Polak; Z. I. Kolar ABSTRACT Literature on the mechanisms of magnesium transport through fish intestine is scarce. Indirect evidence for a net magnesium transport via the intestinal tract of fish has been established by dietary experiments (e.g...

... adenosine inosine magnesium Anaerobic metabolic pathways are believed to cause pH changes in animal tissues. Tissue pH, however, is one of the most decisive modulators of enzyme function and is important for energy transductions. Its regulation is essential not only during aerobiosis but also...

... concentration and ionic strength were determined. The calcium-magnesium ionophore A23187 inhibited glutamate oxidation in both low-(40% of control rate) and high-(25 % of control rate) osmolarity media. Addition of MgCl 2 reversed A23187 inhibition, but at each MgCl 2 concentration (1–5 mmoll −1 ) the rate...

...A. O. J. Oikari; J. C. Rankin ABSTRACT Infusion of magnesium salts into the body cavity of freshwater-adapted rainbow trout led to elevated plasma magnesium concentrations and to stimulation of renal tubular secretion of magnesium. The majority of the infused load was excreted renally, no net...