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Your search keyword '"CHARMASSON R"' showing total 11 results
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11 results on '"CHARMASSON R"'

5. Osmotic effects of tubulin (brain contractile protein) polymerization. A possible role in cell salt and water regulation.

Author

Charmasson R

Subjects
Animals, Brain physiology, Kinetics, Macromolecular Substances, Osmotic Pressure, Swine, Temperature, Vasopressins physiology, Tubulin metabolism, Water-Electrolyte Balance
Abstract

Polymerization changes of tubulin (a contractile protein of brain) induced by temperature increase from 4 degrees C to 25 degrees C caused a large (85%) decrease in measured osmotic pressure of the tubulin. This indicates that contractile proteins within cells may be expected to play a significant role in cell osmotic equilibria.

Published
1981

6. [Determination, using a piezo-impulse method, of iso-osmotic permeability of the apical membrane of epithelium].

Author

Eyraud C, Dubief MC, and Charmasson R

Subjects
Animals, Anura, Biological Transport, Body Fluids metabolism, Cell Membrane physiology, Epithelium physiology, Epithelium ultrastructure, Hydrostatic Pressure, In Vitro Techniques, Models, Biological, Osmolar Concentration, Osmotic Pressure, Skin Physiological Phenomena, Cell Membrane Permeability, Water-Electrolyte Balance
Abstract

A frog skin, mechanically held on the mucosal side separates two Ringer solutions. It is submitted to an hydrostatic pressure difference delta P varying between 2 and 120 mb. Water permeability P (delta P) delta pi = 0 is determined with a piezo-impulse method. The rapid variation of permeability within the 2-25 mb range indicates a reversible closing of the junctions. The limiting value Pisol for high delta P is the isoosmotic permeability of the apical membrane.

Published
1985

11. [Changes in physicochemical properties of blood biopolymers in a hyperbaric atmosphere].

Author

Charmasson R and Sicardi F

Subjects
Atmosphere Exposure Chambers, Atmospheric Pressure, Blood Coagulation Tests, Diving, Erythrocyte Count, Erythrocytes physiology, Helium blood, Hematocrit, Humans, Membranes, Artificial, Osmotic Pressure, Oxygen blood, Pressure, Thrombelastography, Blood Coagulation Disorders, Hyperbaric Oxygenation
Published
1972

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