.... Serum Mg was recorded daily for the first week and thereafter each week for a month for each infant. Concurrent calcium, phosphate and alkaline phosphatase were measured. Results: 51 preterm infants (24 female) with a birth weight <1,000 g were included (33 were born at <27 weeks’ gestation...

...Linda L. Gratny; Kimberly Ringer; Robert T. Hall; Uri S. Alon Objective: Furosemide treatment in the human neonate is associated with sodium depletion, growth retardation, hypercalciuria and nephrocalcinosis. Dietary sodium intake is known to directly influence urinary calcium excretion...

... (both urinary and nephrogenous) were significantly correlated with age, length, weight, and urinary phosphorus concentrations of the infants. No significant correlation could be observed, however, between serum phosphorus or serum and urinary calcium on the one hand, and urinary or nephrogenous cAMP...

...Sylvie Chalon; Jean-Michel Garel The influence of PTH, calcitonin (CT), and thyroxine deficiencies during pregnancy on fetal plasma calcium and fetal growth has been investigated in thyroidectomized (TX) and thyroparathyroidectomized (TPTX) mother rats complemented or not with thyroxine. Maternal...

...Jacques Senterre; Bernard Salle The aim of this study is to emphasize renal aspects of calcium and phosphorus metabolism from our data of more than 200 metabolic balance studies carried out in preterm infants. Renal production of 125-dihydroxyvitamin D increased rapidly after birth provided...

...Marilyn Krukowski; Jethroe J. Smith Near-term rat fetuses in utero are acidotic and hypoxic, and have high levels of total serum calcium. In the first hour of postnatal life, pO 2 and pH increase and pCO 2 and calcium fall. Between 1 and 4 h following birth, respiratory gases vary little, whereas...

...Sara Arnold Fowler; Mary E. Williams; Kenney Gray The placental translocation of calcium is a well-known process, but the underlying mechanisms remain unknown. Placental cytoplasmic proteins capable of binding calcium and the active metabolites of vitamin D 3 were sought in these studies. Cytosol...

..., segmental and patchy myonecrosis, round muscle cell nuclei, loss of sarcoplasm and sarcolemmal collapse. Purkinje fibers were relatively unaffected. Histochemical studies including Von Kossa and other stains indicated marked deposition of calcium salts in the cytoplasm of the damaged myofibrils. Calcium...

...D. Durand; M. Dalle; J.-P. Barlet In pregnant guinea pigs on day 60 of gestation, maternal hypercalcemia induced by calcium infusion (10 mg Ca/kg body weight/h, during 2 h) had no significant effect on the fetal plasma calcium level. By contrast, on day 66 of gestation the same infusion of calcium...

...A.J. Morgan; D. Bellamy Changes in the Ca, Mg, Na and K content of whole femurs and in the calcium content of thoracic aortas, were measured by flame spectrophotometry during the neonatal growth phase of laboratory rats. Aorta calcium content was found to decrease throughout the period of study...

...Jean-Michel Garel Rat fetuses with or without parathyroid glands (intact or decapitated at 17.5 days of gestation) were injected subcutaneously with the disodium salt of EDTA at 21.5 days of gestation. In the two groups, the unchelated plasma calcium levels were measured within 180 min following...

... and the associations in renal excretion of calcium (Ca), magnesium (Mg), phosphate (P) and sodium (Na) in formula-fed preterm infants during the first month of life. Patients: Thirty-four infants <32 weeks gestational age, clinically stable, not receiving nephrotoxic drugs. Methods: Measurements of serum and 8-hour...

... Diffusion-weighted imaging Proton magnetic resonance spectroscopy Glutamate Calcium Lactate Cytokines Original Paper Biol Neonate 2001;80:7 14 Advanced Magnetic Resonance Imaging Techniques in Perinatal Brain Injury1 Petra S. Hüppia Maurizio Amatob aDepartment of Paediatrics, Children s Hospital...

...Shelley D. Zurcher; Gleen L. Ong-Veloso; Sergey E. Akopov; William J. Pearce In light of evidence that hypoxia inhibits cerebrovascular calcium influx and that the contractile importance of calcium influx is greater in neonatal than adult cerebral arteries, the present studies evaluate...