Philipson, K. D. (1985) Biochim. Biophys. Acta 821,367-376 Reeves, J. P., Hale, C. C., de la Pena, P., Slaughter, R. S., Boulware, T., Froehlich, J., Kaczorowski, G. J. & Cragoe, E. J. (1984) in Epithelial Calcium and Phosphate Transport: Molecular and Cellular Aspects (Bronner, F. & Peterlik, M., eds.), pp. 77-82, Alan Liss Inc., New York Blaustein, M. P. (1977) Biophys. J . 20,79-111 Chapman,...

METHOD Eighty patients were prospectively randomized for precolonoscopic cleansing either with 750ml of 10% mannitol (Group M) or 180ml of a sodium phosphate preparation (Group NaP). Laboratory examinations before and after preparation on all patients included hemoglobin, hematocrit, sodium, potassium, phosphorous, calcium and serum osmolarity. A questionnaire was used to assess undesirable sid...

Through the polishing experiments of potassium dihydrogen phosphate (KDP) crystals based on deliquescent action, the effect of several major factors, including crystal's initial surface state, polishing time, and revolution of polishing plate, on material removal was researched. Under certain experimental conditions, the rules of material removal were reached, and experimental results are discu...

We developed a four-channel photon counting based Stokes-polarimeter for spatial characterization of polarization effects in second harmonic generation (SHG). We have implemented a calibration technique allowing quantitative measurement of polarization parameters, such as the degree of polarization (DOP), degree of linear polarization (DOLP), degree of circular polarization (DOCP), as well as a...

Membrane vesicles isolated from Azotobacter vinelandii strain O by lysis of spheroplasts in potassium of sodium phosphate buffer develop a transmembrane electric potential during respiration. The magnitude of this potential was determined by three independent methods: (i) fluorescence of 3,3'-dipropylthiodicarbocyanine and 3,3'-dihexyloxacarbocyanine; (ii) uptake of 86Rb+ in the presence of val...

Growth is an integrative trait that responds to environmental factors and is crucial for plant fitness. A major environmental factor influencing plant growth is nutrient supply. In order to explore this relationship further, we quantified growth-related traits, ion content, and other biochemical traits (protein, hexose, and chlorophyll contents) of a recombinant inbred line population of Arabid...

We established a simple and rapid enzymatic method for measuring potassium ion in serum by using tryptophanase (EC 4.1.99.1) purified from Escherichia coli K12 strain (E. coli K12 IFO 3301). The presence of pyridoxal 5-phosphate promotes this enzymatic reaction, and potassium and (or) ammonium ions further accelerate it, with ammonium and potassium ions providing equivalent acceleration. We eli...

Patients with chronic kidney disease (CKD) often require regular hemodialysis (HD) to prolong life. However, between HD sessions, patients have to restrict their diets carefully to avoid excess accumulation of potassium, phosphate, sodium, and fluid, which their diseased kidneys can no longer regulate. Failure to adhere to their renal dietary regimes can be fatal; nevertheless, non-adherence is...

Isolated adult rat hearts perfused in an isovolumic mode were used to study the effects of sodium-potassium pump inhibition and sodium-calcium exchange alterations on the tissue content of adenosine triphosphate, phosphocreatine, inorganic phosphate, and intracellular pH, all measured by phosphorus-31 nuclear magnetic resonance spectroscopy. Rates of oxygen consumption, contractile function, an...

Hypothermic potassium cardioplegia is now commonly used to protect the myocardium during surgically induced ischemia. Because the potassium-related membrane depolarization has been shown to increase calcium influx, we undertook this study to define the effects of varying the calcium content in hyperkalemic perfusates and the effects of using magnesium instead of or in addition to potassium as t...