CESIUM-SODIUM INTERACTIONS ON X-RAY DEPOLARIZATION OF MUSCLE FIBERS

Abstract

Cesium ions in bathing fluid produce a depolarization of frog sartorius muscle fibers independent of the depolarization produced by irradiation. The fractional depolarization produced by x-rays is independent of external cesium concentration, but proportional to external sodium concentration, and is explained as the result of an increased sodium ion permeability. Cesium depolarization (20mMCs) in non-irradiated fibers increases with decreasing sodium concentration, indicating a specific sodium-cesium interaction in the membrane. A simple concentration-cell potential explanation for the cesium effects is not yet adequate.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1962
Accession Number
AD0296448

Entities

People

  • Adolfo Portela
  • Juan C. Perez

Organizations

  • Emory University

Tags

DTIC Thesaurus Topics

  • Cells
  • Chlorides
  • Connective Tissue
  • Depolarization
  • Electrical Measurement
  • Electrodes
  • Government Procurement
  • Measurement
  • Membrane Potentials
  • Membranes
  • Muscle Cells
  • Muscle Fibers
  • Muscles
  • Permeability
  • Potassium
  • Potassium Chloride
  • X Rays

Fields of Study

  • Physics

Readers

  • Cardiovascular Physiology
  • Nuclear and Radiation Engineering.