Water and nonelectrolytes permeability in mammalian red cell membranes
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منابع مشابه
Tracer Determinations of Human Red Cell Membrane Permeability to Small Nonelectrolytes
A flow system has been used to determine the permeability of human red cell membranes to four small nonelectrolytes labeled with (14)C. The permeability coefficients, omega, in units of mol dyne(-1) sec(-1) x 10(15), are: ethylene glycol, 6; urea, 13; formamide, 22; and methanol, 131. The values for urea and formamide are in good agreement with values obtained by Sha'afi, Gary-Bobo, and Solomon...
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VARGAS, FERNANDO, AND JOHN A. JOHNSON, Permeability of rabbit heart capillaries to nonelectrolytes. Am. J. Physiol. 2 r 3(1> : 87-93. 1967. -Isolated perfused rabbit hearts were used to study the permeability characteristics of their capillaries with respect to inulin, raffinose, sucrose, and urea, The method used involved a continuous weighing of the isolated perfused heart. Each heart was iso...
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The mechanisms of plant membrane water permeability have remained elusive until the recent discovery in both vacuolar and plasma membranes of a class of water channel proteins named aquaporins. Similar to their animal counterparts, plant aquaporins have six membrane-spanning domains and belong to the MIP superfamily of transmembrane channel proteins. Their very high efficiency and selectivity i...
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The inhibitory effect of a series of neutral lipophilic solutes (methanol, ethanol, n-propanol, iso-propanol, n-butanol, iso-amylalcohol, n-hexanol, diethylether, nitrobenzene, and pyridine) on the diffusional water permeability (Pd, tot) of bovine erythrocyte membrane at 25 degrees C was studied in comparison to that of p-chloromercuri benzoate (pCMB). Permeability data were obtained by measur...
متن کاملPermeability of the corneal endothelium to nonelectrolytes.
The endothelial surface of the isolated rabbit cornea was perfused with modified KEI medium, according to the method reported previously. This in vitro cornea maintained its thickness within the normal range even after the epithelium ivas removed. The endothelial permeability of these in vitro corneas to tritiated water, >C-labeled urea, sucrose, and inulin teas determined. The reflection coeff...
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ژورنال
عنوان ژورنال: Progress in Biophysics and Molecular Biology
سال: 1973
ISSN: 0079-6107
DOI: 10.1016/0079-6107(73)90018-7