Hormonal control of renal potassium excretion
نویسندگان
چکیده
منابع مشابه
Development of renal potassium excretion capacity in the neonatal rat.
We investigated the capacity of newborn rats to excrete an acute potassium load to understand the development of a renal potassium excretion system. Three groups of the rats (7-14 d) were used to collect urine periodically over 6 h after oral infusion of potassium: control (no potassium loading) and low- and high-potassium-loaded rats. In the low-potassium-loaded group, infused with about 0.6 m...
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MALNIC, GERHARD, RUTH M. KLOSE, AND GERHARD GIEBISCH. Micropuncture study of renal potassium excretion in the rat: Am. J. Physiol. 206(4): 674-686. I g64.-Samples of proximal and distal tubular fluid were collected from rats maintained on a control, a low-K, or a high-K, low-Na diet. All animals received inulin-C 14. Plasma (P) and tubular fluid (TF) were analyzed for Na and K by dual-channel m...
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Considering the close analogy between the insect median neurosecretory cell (m.n.c.)/ corpus cardiacum (c.c.) complex, and the vertebrate hypothalamo-hypophyseal system (Scharrer & Scharrer, 1944), few studies have been made on the possible hormonal control of water metabolism in insects. In fact, our present knowledge of this aspect is confusing and, in some cases, contradictory (Wall & Ralph,...
متن کاملRecent advances in the field of renal potassium excretion: what can we learn from potassium channels?
Potassium channels in the apical and basolateral membranes of tubule cells serve several important functions. They contribute to the generation of the cell-negative potential, mediate volume reductions following cell swelling and play a key role in secretion of potassium in both the thick ascending limb of Henle's loop and principal tubule cells of the initial and cortical collecting tubules. S...
متن کاملEvidence suggesting renal tubular excretion of potassium in man during recovery from acute renal insufficiency.
In 1942 Winkler and Smith (1), studying the simultaneous renal clearances of exogenous creatinine and potassium in dogs following the injection of potassium salts, concluded that potassium is normally filtered at the glomerulus and subjected to a variable degree of tubular reabsorption. The highest potassium/creatinine clearance ratio obtained by these authors was 0.40. In 1948 Berliner and Ken...
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ژورنال
عنوان ژورنال: Kidney International
سال: 1985
ISSN: 0085-2538
DOI: 10.1038/ki.1985.20