... 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...

... haemocyanin oxygen-binding Bohr effect ionic effector association constant calcium magnesium lactate tauropine. The New Zealand blackfoot abalone ( Haliotis iris ; also known by the Maori name, paua) belongs to an ancient morphologically conservative group, the Archaeogastropoda ( Andrews...

...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...

... a greater ability to transport calcium inwards and/or a lower calcium permeability. The blood concentration of magnesium, another highly regulated ion in blue crabs ( Colvocoresses et al . 1974 ), decreases with an increasing calcium concentration in the external solution and the corresponding negative...

...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...

... . 237 , 1460 – 1468 . 10.1016/S0021-9258(19)83723-7 Lanoue , K. F. & Schoolwerth , A. C. ( 1979 ). Metabolite transport in mitochondria . A. Rev. Biochem . 48 , 871 – 922 . 10.1146/annurev.bi.48.070179.004255 Maughan , D. ( 1983 ). Diffusible magnesium in frog...

... 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...