Determination of cell membrane permeability in concentrated cell ensembles
نویسندگان
چکیده
منابع مشابه
Permeability of a Cell Membrane Junction
The ion permeability of the membrane junctions between Chironomus salivary gland cells is strongly depressed by treatments that are generally known to inhibit energy metabolism. These treatments include prolonged cooling at 6 degrees -8 degrees C, and exposure to dinitrophenol, cyanide, oligomycin, and N-ethylmaleimide. Intracellular injection of ATP appears to prevent depression of junctional ...
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vitro. Arch Neurol 33: 715-721, 1976 10. Garcia JH, Kamijyo Y: Cerebral infarction: evolution of histopathological changes after occlusion of a middle cerebral artery in primates. J Neuropathol Exp Neurol 33: 408^121, 1974 11. Cammermeyer J: The importance of avoiding "dark" neurons in experimental neuropathology. Acta Neuropath 1: 245-270, 1961 12. Nicholson C, Ten Bruggencate G, Steinberg R, ...
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The permeability of the membrane surfaces where cells are in contact (junctional membranes) in Chironomus salivary glands depends on Ca ++ and Mg++. When the concentration of these ions at the junctional membranes is raised sufficiently, these normally highly permeable membranes seal off; their permeability falls one to three orders, as they approach the nonjunctional membranes in conductance. ...
متن کاملPatterns of Nonelectrolyte Permeability in Human Red Blood Cell Membrane
The permeability of human red cell membrane to 90 different molecules has been measured. These solutes cover a wide spectrum of nonelectrolytes with varying chemical structure, chain length, lipid solubility, chemical reactive group, ability to form hydrogen bonds, and other properties. In general, the present study suggests that the permeability of red cell membrane to a large solute is determ...
متن کاملIncreased Cell Membrane Permeability in the Pathogenesis of Hereditary Spherocytosis.
The hemolytic process in hereditary spherocytosis (HS) is presumed to involve an intrinsic defect in the structure or metabolism of the red cell (1-3). The nature of the basic cellular defect remains enigmatic, although its manifestations are well characterized. Distinctive features of the HS red cell are its more spheroidal shape, small surface area, and high hemoglobin concentration and its e...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1987
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(87)83270-8