Potassium Transport
Characteristics of the Relationship between the Flow Rate of Tubular Fluid and Potassium Transport in the Distal Tubule of the Rat
... influence potassium transport in the distal convoluted tubule of the ...and potassium transport was examined in four groups of ...tubular potassium transport in groups I, II, and ...
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Regulation by adrenal corticosteroids of sodium and potassium transport in loop of Henle and distal tubule of rat kidney
... Studies were conducted to examine the effects of adrenalectomy (ADX) and selective, physiological adrenal corticosteroid replacement on sodium and potassium transport by the superficial loop of Henle and ...
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Diphenylhydantoin and potassium transport in isolated nerve terminals
... K transport within synaptic terminals isolated from “normal” rat brain cortex was examined ...vitro potassium transport within ...and potassium (10 mM) concentrations optimal for Na-K pump ...
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Regulation of active sodium and potassium transport in the distal colon of the rat Role of the aldosterone and glucocorticoid receptors
... specific agonist did not induce electrogenic sodium absorption nor affect either potassium absorption or secretion. These studies demonstrate that aldosterone (i.e., mineralocorticoid) and glucocorticoid receptors ...
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Potassium transport in the freshwater bivalve Dreissena polymorpha
... of potassium transport in two unionids and a corbiculid, Dietz and Byrne (1990) hypothesized that excess potassium in the blood may depolarize excitable tissue and ultimately determine tolerance ...
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Effects of adrenalectomy and chronic adrenal corticosteroid replacement on potassium transport in rat kidney
... Clearance experiments were carried out in pair-fed rats to examine the long-term effects of adrenalectomy and selective adrenal corticosteroid replacement in physiological amounts on renal potassium ...
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Control of sodium and potassium transport in the cortical collecting duct of the rat Effects of bradykinin, vasopressin, and deoxycorticosterone
... potassium secretion. Bradykinin (10(-9) M in the bath) caused a reversible 40-50% inhibition of net sodium absorption without affecting net potassium transport or the transepithelial potential ...
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Linkage of aerobic glycolysis to sodium potassium transport in rat skeletal muscle Implications for increased muscle lactate production in sepsis
... sodium– potassium transport has been demonstrated in diaphragm, vascular smooth muscle, and other cells, it is not known whether this linkage occurs in skeletal muscle ...by potassium re-addition ...
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The Concentration Dependence of Active Potassium Transport in the Human Red Blood Cell
... active potassium influx in the human red blood cell and the extracellular potassium concentration does not appear to be consistent with the Michaelis- Menten model, but is adequately described by a model in ...
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Regulation of Sodium and Potassium Transport in Phytohemagglutinin Stimulated Human Blood Lymphocytes
... Phytohemagglutinin (PHA) or concanavalin A treatment of lymphocytes causes an increase in membrane permeability so that the leak rates of Na and K increase 1.5- to 2-fold. Active Na and K transport increase ...
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Comparison of Potassium Transport in Three Structurally Distinct Regions of The Insect Midgut
... Analysis of the differences in the 7SC decay profile and kinetic influx pool size between isolated anterior, middle and posterior midgut tissue allow certain hypotheses to be put forward[r] ...
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POTASSIUM TRANSPORT IN THE ACETYLCHOLINESTERASE DEFICIENT ERYTHROCYTES OF PAROXYSMAL NOCTURNAL HEMOGLOBINURIA (PNH)
... Taylor, Weller and Hastings studied the effect of inhibitors of cholinesterase physostigmine, diisopropyl fluorophosphate on the potassium concentration gradient as well as on the rate o[r] ...
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Bathing Solution Tonicity and Potassium Transport by the Midgut of the Tobacco Hornworm Manduca Sexta
... shows the dry weight/wet weight ratio and potassium/tissue water ratio of midgut strips equilibrated in solutions containing 32 m-equiv K+/1 and either 166 rnM sucrose, 83 mM sucrose, or[r] ...
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Active Potassium Transport by the Isolated Lepidopteran Larval Midgut: Stimulation of Net Potassium Flux and Elimination of the Slower Phase Decline of the Short Circuit Current
... Adenosine 3':5'-cyclic monophosphate cyclic AMP, Antibiotic A23187, caffeine, cholera toxin, dibutyryladenosine 3' :5'-cyclic monophosphate dbcAMP, 5-hydroxytryptamine 5-HT, larval blood[r] ...
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Potassium transport by the isolated perfused kidney
... of potassium in response to a rising concentration of potassium in the medium but never show net secretion of ...chronically potassium-loaded rats regularly secrete potassium in excess of the ...
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Competitive Effects of Some Cations on Active Potassium Transport in the Human Red Blood Cell
... active potassium influx, and calcium is without ...which potassium is required at more than one site before transport occurs, and the sites are indistinguishable as far as their behavior toward the ...
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Mechanism of Inhibition of Active Potassium Transport in Isolated Midgut of Manduca Sexta by Bacillus Thurjngiensis Endotoxin
... After achievement of the tracer steady state Wood & Harvey, 1975, a IU/ml Bt caused inhibition of IK • but had no effect on the unidirectional flux of potassium • from blood-side to [r] ...
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Refinements in the Short Circuit Technique and its Application to Active Potassium Transport Across the Cecropia Midgut
... Potential profiles in three hypothetical situations are shown below, i open-circuit, with no current flow, and potential difference Vo across the tissue; ii idealized short-circuit, with[r] ...
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The insect V ATPase, a plasma membrane proton pump energizing secondary active transport: molecular analysis of electrogenic potassium transport in the tobacco hornworm midgut
... ATP-dependent proton transport and K + /nH + antiport Having established that the goblet cell apical membrane of tobacco hornworm midgut possesses a V-ATPase, one problem became evident:[r] ...
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Protective effects of potassium transport in mitochondria from rat myometrium under activation of mitochondrial permeability transition pore
... of potassium cycle, on the other hand, regu lates the rate of ROS generation and matrix volu me, thus preventing membrane rupture and overproduction of damaging ...
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