Properties of potassium and sodium channels in frog internode.
نویسندگان
چکیده
منابع مشابه
Sodium and Potassium in Frog Muscle*
The potassium content of muscle fibers depends, in part, upon the potassium concentration of the external medium (Fenn and Cobb, 1934). In tissues intact in the body, it has been shown that sodium enters the fibers as potassium leaves, either because of low potassium in the blood (Heppel, 1939, 1940) or because of activity or fatigue (Fenn, 1938). Such findings suggest that the normal accumulat...
متن کاملSodium and Potassium in Frog Muscle*
The potassium content of muscle fibers depends, in part, upon the potassium concentration of the external medium (Fenn and Cobb, 1934). In tissues intact in the body, it has been shown that sodium enters the fibers as potassium leaves, either because of low potassium in the blood (Heppel, 1939, 1940) or because of activity or fatigue (Fenn, 1938). Such findings suggest that the normal accumulat...
متن کاملEffects of KC 3791 on sodium and potassium channels in frog node of Ranvier.
Effects of a new antiarrhytmic compound KC 3791 on sodium (INa) and potassium (IK) currents were studied in frog myelinated nerve fibres under voltage clamp conditions. When applied externally to the node of Ranvier, KC 3791 (KC) at concentrations of 10(-5)-10(-4) mol.l-1 produced both tonic and cumulative (use-dependent) inhibition of INa. An analysis of the frequency-, voltage- and time depen...
متن کاملOn the Sodium and Potassium Balance of Isolated Frog Muscles.
perithecial parent, the possibility that something is being transmitted through the cytoplasm is immediately suggested. However, with so little information available as to the possible nature of tfie defect whiph produces the poky phenotype, conclusions regarding the mechanism of its transmission would necessarily be highly speculative in nature. It seems preferable, for the present, to look up...
متن کاملSlack, Slick, and Sodium-Activated Potassium Channels
The Slack and Slick genes encode potassium channels that are very widely expressed in the central nervous system. These channels are activated by elevations in intracellular sodium, such as those that occur during trains of one or more action potentials, or following activation of non-selective cationic neurotransmitter receptors such as AMPA receptors. This review covers the cellular and molec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1986
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1986.sp016317