منابع مشابه
Osmosis in Cortical Collecting Tubules
This paper reports a theoretical analysis of osmotic transients and an experimental evaluation both of rapid time resolution of lumen to bath osmosis and of bidirectional steady-state osmosis in isolated rabbit cortical collecting tubules exposed to antidiuretic hormone (ADH). For the case of a membrane in series with unstirred layers, there may be considerable differences between initial and s...
متن کاملThe single nephron preparation--cortical collecting tubules.
As Dr. Burg has pointed out, the rabbit has practically the only kidney fromi which nephrons can be dissected conveniently. We have dissected collecting tubules from human kidneys recently, but dissection of the rabbit kidney is far easier and the supply of kidneys certainly more dependable. Two points about the renal anatomy in the rabbit need to be emphasized. First of all, the cortical colle...
متن کاملBicarbonate secretion by rabbit cortical collecting tubules in vitro.
We previously reported that rabbit renal cortical collecting tubules can secrete bicarbonate in vitro (i.e., there can be net transport from bath to lumen, causing the concentration in the lumen to increase). Net bicarbonate secretion was observed most often when rabbits had been pretreated with NaHCO(3) and were excreting alkaline urine before being killed for experiments. The purpose of the p...
متن کاملLipoprotein Granules in the Cortical Collecting Tubules of Mouse Kidney
The light and, to a lesser extent, the dark cells of the cortical collecting tubules in mouse kidney contain a great number of granules which according to histochemical tests are composed of phospholipids and proteins. These granules are bounded by a triple-layered membrane measuring approximately 75 A across, and contain one or several crystals with a hexagonal or square lattice. These crystal...
متن کاملEffect of acid lumen pH on potassium transport in renal cortical collecting tubules.
In order to determine the effect of acid lumen pH on renal tubular potassium transport, cortical collecting tubules were dissected from rabbit kidneys and perfused in vitro. When the pH of the perfusate was lowered from 7.4 to 6.8, potassium secretion into the tubule lumen decreased by an average of 47%. The transepithelial voltage increased from a mean value of -32 mV (lumen negative) at pH 7....
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1974
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.64.2.201