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Articles 301 - 306 of 306
Full-Text Articles in Medical Sciences
Passive Cation Transport In Reversibly Sickling Deer Red Blood Cells, Norma C. Adragna, Peter K. Lauf
Passive Cation Transport In Reversibly Sickling Deer Red Blood Cells, Norma C. Adragna, Peter K. Lauf
Pharmacology and Toxicology Faculty Publications
No abstract provided.
Kinetics Of Na/Li Exchange In High-K (Hk) And Low-K (Lk) Sheep Red Cells (Src), K. H. Ryu, Norma C. Adragna, D. Bradley, Peter K. Lauf
Kinetics Of Na/Li Exchange In High-K (Hk) And Low-K (Lk) Sheep Red Cells (Src), K. H. Ryu, Norma C. Adragna, D. Bradley, Peter K. Lauf
Pharmacology and Toxicology Faculty Publications
No abstract provided.
Optimal Isolation Conditions For Ion-Transport Studies In Pig Aortic Endothelial-Cells, Norma C. Adragna
Optimal Isolation Conditions For Ion-Transport Studies In Pig Aortic Endothelial-Cells, Norma C. Adragna
Pharmacology and Toxicology Faculty Publications
No abstract provided.
Electrophysiology Of Flounder Intestinal Mucosa. I. Conductance Properties Ofthe Cellular And Paracellular Pathways, Dan R. Halm, Edward J. Krasny Jr., Raymond A. Frizzell
Electrophysiology Of Flounder Intestinal Mucosa. I. Conductance Properties Ofthe Cellular And Paracellular Pathways, Dan R. Halm, Edward J. Krasny Jr., Raymond A. Frizzell
Neuroscience, Cell Biology & Physiology Faculty Publications
We evaluated the conductances for ion flow across the cellular and paracellular pathways of flounder intestine using microelectrode techniques and ion-replacement studies. Apical membrane conductance properties are dominated by the presence of Ba-sensitive K channels. An elevated mucosal solution K concentration, [K]m, depolarized the apical membrane potential (ψa) and, at [K]m less than 40 mM, the K dependence of ψa was abolished by 1-2 mM mucosal Ba. The basolateral membrane displayed Cl conductance behavior, as evidenced by depolarization of the basolateral membrane potential (ψb) with reduced serosal Cl concentrations, [Cl]s. …
Electrophysiology Of Flounder Intestinal Mucosa. Ii. Relation Of The Electrical Potential Profile To Coupled Nacl Absorption, Dan R. Halm, Edward J. Krasny Jr., Raymond A. Frizzell
Electrophysiology Of Flounder Intestinal Mucosa. Ii. Relation Of The Electrical Potential Profile To Coupled Nacl Absorption, Dan R. Halm, Edward J. Krasny Jr., Raymond A. Frizzell
Neuroscience, Cell Biology & Physiology Faculty Publications
We characterized the hyperpolarization of the electrical potential profile of flounder intestinal cells that accompanies inhibition of NaCl cotransport. Several observations indicate that hyperpolarization of ψa and ψb (Δψa,b) results from inhibition of NaCl entry across the apical membrane: (a) the response was elicited by replacement of mucosal solution Cl or Na by nontransported ions, and (b) mucosal bumetanide or serosal cGMP, inhibitors of NaCl influx, elicited Δψa,b and decreased the transepithelial potential (ψt) in parallel. Regardless of initial values, ψa and ψb approached the equilibrium potential for K (EK …
Metabolism In Preimplantation Mouse Embryos, Harry M. Weitlauf, Gary L. Nieder
Metabolism In Preimplantation Mouse Embryos, Harry M. Weitlauf, Gary L. Nieder
Neuroscience, Cell Biology & Physiology Faculty Publications
The ability of preimplantation mouse embryos to utilize glucose oxidatively is controlled, in part at least, at the level of glycolysis. Various experimental observations are reviewed that indicate the regulatory mechanism in delayed implanting blastocysts involves the classic negative allosteric feedback of high levels of ATP on phosphofructokinase while the situation in 2-cell embryos appears to be more complicated. That is, in addition to the usual negative effect of ATP and citrate on phosphofructokinase, there appears to be a modification of hexokinase that prevents phosphorylation of adequate amounts of glucose and results in low levels of fructose-6-phosphate at the 2-cell …