FORTE, JOHN G., AND ALAN H. NAUSS. Effects of calcium removal on bullfrog gastric mucosa. Am. J. PhysioL 205(4): 631637* I g63.-Removal of calcium from isolated bullfrog gastric mucosae by serial washings in calcium-free solutions or by the addition of EDTA or citrate caused a fall in transmucosal potential difference, a rise in the mucosal conductance, and an apparent decrease in the rate of a...

FORTE, JOHN G., AND ALAN H. NAUSS. Effects of calcium removal on bullfrog gastric mucosa. Am. J. PhysioL 205(4): 631637* I g63.-Removal of calcium from isolated bullfrog gastric mucosae by serial washings in calcium-free solutions or by the addition of EDTA or citrate caused a fall in transmucosal potential difference, a rise in the mucosal conductance, and an apparent decrease in the rate of a...

A recently developed method for converting protein carboxyl groups to alcohols has been used to examine the functional role of carboxyl groups in the red blood cell inorganic anion-transport protein (band 3). A major goal of the work was to investigate the carboxyl group that is protonated during the proton-sulfate cotransport that takes place during net chloride-sulfate exchange. Three kinds o...

The paracellular pathway through the tight junction provides an important route for transepithelial chloride reabsorption in the kidney, which regulates extracellular salt content and blood pressure. Defects in paracellular chloride reabsorption may in theory cause deregulation of blood pressure. However, there is no evidence to prove this theory or to demonstrate the in vivo role of the parace...

We investigated whether high levels of expression of the cystic fibrosis transmembrane conductance regulator (CFTR) would alter the functional properties of newly synthesized recombinant proteins. COS-7, CFPAC-1, and A549 cells were intranuclearly injected with a Simian virus 40-driven pECE-CFTR plasmid and assayed for halide permeability using the 6-methoxy- N-(3-sulfopropyl)quinolinium fluore...

The non-steady-state migration test for measuring the chloride migration coefficient was performed on mortar specimens fabricated with supplementary cementitious materials. A careful examination of the test results revealed that the use of more than one specimen with different test durations is recommended for obtaining reliable chloride migration coefficients. Additionally, the voltage applied...

This paper investigates whether durability indicators (DIs), more specifically transport properties, can be assessed by simple methods, e.g. direct experimental methods or indirect methods based on analytical formulas, for every type of concrete. First the results of electrical resistivity and apparent chloride diffusion coefficient obtained by direct measurement on a broad range of materials, ...