K transport
KCl Transport Across an Insect Epithelium: Characterization of K Stimulated Cl Absorption and Active K Transport
... Transepithelial ^K fluxes under 1^ conditions Normal saline Active K transport has been reported across locust rectum in vivo Phillips, 19646,c and in vitro Williams et al.. 1978; howeve[r] ...
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Kinetics and Route of Active K Transport in the Isolated Midgut of Hyalophora Cecropia
... Similarly, when the K concentration was reduced to 2 mM leaving no cation to exchange with cell K simply by replacing part of the potassium by sucrose, the K transport was reduced to 5*2[r] ...
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K+ transport in the mesonephric collecting duct system of the toad Bufo bufo
... The isolated tubules were transferred in a small volume of dissection medium to a bath chamber mounted on an inverted microscope equipped with Nomarski optics (Zeiss, Axiovert 135 TV) and perfused in vitro at room ...
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Direct selection for mutants with increased K+ transport in Saccharomyces cerevisiae.
... Saccharomyces cerevisiae cells containing a deletion of T R K l , the gene encoding the high affinity potassium transporter, retain only low affinity uptake of this ion[r] ...
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TRK2 is required for low affinity K+ transport in Saccharomyces cerevisiae.
... The alteration of both uptake and efflux in trk2- 2 mutants suggests TRK2 may play a role in both of these transport processes and is consistent with the hypothesis t[r] ...
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K+ transport in Malpighian tubules of Tenebrio molitor L : a study of electrochemical gradients and basal K+ uptake mechanisms
... ion transport in insect Malpighian tubules have been studied extensively in a number of species (for reviews, see Maddrell and O’Donnell, 1992; Nicolson, 1993; Pannabecker, 1995; Beyenbach, ...fluid ...
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Inhibition of active K transport in the isolated midgut of Hyalophora cecropia by Tl+
... The transport may be directly measured by the short-circuit current Harvey & Nedergaard, 1964, and is inhibited by thallous ions Zerahn & Koefoed, 1979.. This inhibition is most effectiv[r] ...
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Demonstration of active potassium transport in the mammalian colon
... for K transport in the mammalian colon is ...whether K secretion involves active as well as passive driving forces in controls and in animals with a marked increase in K ...a K-enriched ...
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K+ absorption by locust gut and inhibition of ileal K+ and water transport by FGLamide allatostatins
... shown that FGLa/ASTs are widely distributed within a number of tissues in a variety of insect species. For instance, FGLa/ASTs are distributed in the central and stomatogastric nervous systems, in neurohaemal organs, in ...
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pH GRADIENTS IN LEPIDOPTERAN MIDGUT
... Revised models for K+ transport In summary, it is clear that a K+ transport through the goblet cavity is energised by a plasma-membrane V-ATPase, which is very closely homologous with en[r] ...
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An NMR study of membrane transport by ionophoric compounds
... the K+ complex has a more rapid formation ...the K+ complex that is the more stable. The values for K+ are lower than those for Na+ showing more rapid transport of K+ at all ...
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Basolateral ion transport mechanisms during fluid secretion by Drosophila Malpighian tubules: Na+ recycling, Na+:K+:2Cl– cotransport and Cl– conductance
... ion transport across the basolateral membrane of the principal cells have been proposed in unstimulated tubules ...that K + transport across the basolateral membrane of ...
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Ion Transport in the Midgut of the Cockroaches Leucophaea Maderae and Blabera Gigantea
... In good agreement with these results, the midgut of the mealworm Tenebrio molitor shows an active transport of Na from lumen to haemolymph but shows no active K transport Koefoed & Zerah[r] ...
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Extraction and Bulk Liquid Membrane Transport of Alkali Metal Ions Facilitated by Tripropyleneglycolmonobutylether
... The complexation of metal ion in the pseudocyclic cavity of ionophore is depending on the diameter of metal ion as well as on the size of pseudocyclic cavity . The size of pseudocyclic cavity of the ionophore is suitable ...
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Fixed-point theorems for the sum of two operators under ω-condensing
... In , Darbo [] extended the Schauder fixed-point theorem to the setting of non- compact operators, introducing the notion of k-set contraction. It is not hard to see that the Krasnosel’skii theorem is a ...
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Contributions of K+:Cl cotransport and Na+/K+ ATPase to basolateral ion transport in malpighian tubules of Drosophila melanogaster
... melanogaster may also be controlled in a similar manner, given that okadaic acid (a phosphatase inhibitor) transiently stimulated fluid secretion in the presence of low doses of cyclic GMP but inhibited fluid, and hence ...
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Abstract:A formulation of nonequilibrium thermo field dynamics has been performed using the
... Keywords: nonequilibrium thermo field d ynamics, k inetics, h ydrodynamics, k inetic equations, transport coefficients, coupled states, quark-gluon plasma.. Kinetic and hydrodynamic pro[r] ...
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Potassium transport in the freshwater bivalve Dreissena polymorpha
... This study examines the effects of potassium concentration in the acclimation medium on temporal changes in D. polymorpha blood ion composition and total potassium content of the tissue. The effects of potassium and ...
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The effect of N ethylmaleimide on K+ and Cl transport pathways in the lamprey erythrocyte membrane: activation of K+/Cl cotransport
... Although the magnitude of the K + and Cl~ fluxes stimulated by yV-ethylmaleimide varied widely between cells from different lampreys, there was, in each individual case, a close similari[r] ...
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Regulated Cl transport, K and Cl permeability, and exocytosis in T84 cells
... We measured stimulant-induced changes of exocytosis that are associated with increases in Cl secretion (i.e., short circuit current, ISC, in microA/cm2) and apical (ap) Cl permeability (PCl) and basolateral (bl) K ...
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