title: Donnan potential of rabbit skeletal muscle myofibrils I: electrofluorochromometric detection of potential.
abstract: The fluorescence of the dye CC-6 [(3-hexyl-2-(3-hexyl-2-benzoxazolinylidene)-1-propenyl)-benzoxazolium iodide] has been shown to indicate Donnan potentials in rabbit skeletal muscle myofibrils. These results are in agreement with previously published work in which the potentials were measured with microelectrodes on glycerol-extraced muscle fibers. The magnitude of the Donnan potential of the myofibrils has been shown to be dependent on the state (rigor or relaxed) of the system.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D005456:Fluorescent Dyes; D005990:Glycerol; D007444:Inulin; D008564:Membrane Potentials; D008857:Microscopy, Interference; D009132:Muscles / Q000502:physiology*; D009210:Myofibrils / Q000187:drug effects / Q000502:physiology* / Q000648:ultrastructure; D009994:Osmolar Concentration; D011188:Potassium / Q000378:metabolism; D011189:Potassium Chloride / Q000494:pharmacology; D011199:Potentiometry; D011817:Rabbits; D012965:Sodium Chloride / Q000494:pharmacology; D013395:Sucrose
chemical_list: D005456:Fluorescent Dyes; D012965:Sodium Chloride; D013395:Sucrose; D011189:Potassium Chloride; D000255:Adenosine Triphosphate; D007444:Inulin; D005990:Glycerol; D011188:Potassium