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Enterotoxins and ion transport [PDF]
Biochemical Society Transactions, 1984 Throughout the world and especially in developing countries acute diarrhoea1 diseases are the single major cause of morbidity and mortality both in humans and farm animals. Bacteria are among the chief causal agents of acute diarrhoeas and although fluid secretion can result from an increase in luminal osmolarity or hydrostatic pressure, the majority ...
Michael Field, Mrinalini C. Rao
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Ion Transport in Solutions [PDF]
, 1970 The interaction of an ion in solution with its environment of solvent molecules and other ions has been the subject of the previous two chapters. Now, attention will be focused on the motion of ions through their environment. The treatment will restrict itself to solutions of true electrolytes.
Amulya K. N. Reddy, John O’M. Bockris
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Active ion transport by mitochondria [PDF]
Protoplasma, 1967 The ability of isolated mitochondria to accumulate very large amounts of Ca++ by an active transport mechanism was discovered by V a s i n g t o n and M u r p h y in 1961 [1]. The accumulation process was found to be blocked by respiratory inhibitors and by uncouplers of oxidative phosphorylation, and thus was completely dependent on electron transport
Albert L. Lehninger +2 more
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Ion Transport and Radioresistance
2020Neoplastic transformation is associated with alterations of the ion transports across plasma and intracellular membranes. These alterations are crucial elements of the phenotypical reprogramming of the transformed cells and may promote adaptation to hypoxia, malignant progression, tumor spreading and metastasis, as well as therapy resistance.
Bastian Roth, Stephan M. Huber
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Transport of ions during ion implantation
Physical Review E, 1996An efficient scheme for the description of long-mean-free-path particle transport at a kinetic level has been extended to a case where particle distributions are highly anisotropic: implantation of ions into a solid. The method calculates the scattering rate of particles throughout a region and obtains the particle distribution from the scattering rate.
G.J. Parker +5 more
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1977
We can begin the discussion of ion equilibria by considering a particularly simple practical instance. Let there be two solutions, say 10 mM and 100 mM potassium chloride, separated by a cation-permeable membrane. The membrane may be made, e.g., of a cation-exchange resin and contain pores lined with fixed negative charges.
Arnošt Kotyk, Karel Janáček
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We can begin the discussion of ion equilibria by considering a particularly simple practical instance. Let there be two solutions, say 10 mM and 100 mM potassium chloride, separated by a cation-permeable membrane. The membrane may be made, e.g., of a cation-exchange resin and contain pores lined with fixed negative charges.
Arnošt Kotyk, Karel Janáček
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Ion Transport in Excitable Cells [PDF]
Protoplasma, 1967 All the available evidence indicates that there are two different and entirely distinct pathways by which sodium and (potassium ions can cross the membranes of nerve and muscle fibres—the excitability mechanism and the pump (or recovery) mechanism. The two types of channel for the passage of cations exist side by side in the membrane, but as can be ...
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Journal of Theoretical Biology, 1980
Abstract It is a misconception to think that extracellular electric currents of biologic origin are carried by all of the ions in the extracellular medium. It is established that, for certain reasonable boundary conditions, only those ion species that are transported across the plasma membranes of the biological system, or that chemically derive from
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Abstract It is a misconception to think that extracellular electric currents of biologic origin are carried by all of the ions in the extracellular medium. It is established that, for certain reasonable boundary conditions, only those ion species that are transported across the plasma membranes of the biological system, or that chemically derive from
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Biomimetic ion transport: on the mechanism of ion transport by an artificial ion channel mimic
Canadian Journal of Chemistry, 1990The influx of cations into vesicles mediated by a synthetic transporter is coupled to proton efflux and may be quantified by a pH-stat technique. The dependence of the transport upon cation type and concentration, upon transporter concentration, and upon temperature has been examined. The synthetic transporter is closely similar to the natural channel
Tony D. James +2 more
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