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August 1, 1974The Journal of PhysiologyOpen Access

The permeability to tetraethylammonium ions of the surface membrane and the intercalated disks of sheep and calf myocardium

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Population

Sheep and calf ventricular muscle

Design

Preclinical

Authors

RWRobert WeingartUniversity of North Carolina at Chapel Hill

Discussion

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Implication

Animal data support myocardial cell coupling; leaves open human translation and arrhythmia relevance.

Structured PICO

P
Population
Sheep and calf ventricular muscle
I
Intervention
Radioactive [1-(14)C]tetraethylammonium cations ([(14)C]TEA) at 25 degrees C
O
Outcome
Permeability of the surface membrane and nexal membrane to [(14)C]TEAsurrogate

The nexal membrane of intercalated disks has a permeability to TEA 21,000 times greater than the surface membrane, supporting the concept of low-resistance pathways between myocardial cells.

Cite This Study

Robert Weingart (1974) studied this question.

synapsesocial.com/papers/6a090a4e2757fd3263d3aa9chttps://doi.org/10.1113/jphysiol.1974.sp010632
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The diffusion of radiopotassium across intercalated disks of mammalian cardiac muscle1966 · 307 citations
  2. 2Cat Heart Muscle <i>in Vitro </i>1965 · 28 citations
  3. 3Cat Heart Muscle <i>in Vitro </i>1962 · 120 citations
  4. 4Ionic Mobility in Muscle Cells1969 · 507 citations
  5. 5The recovery of resting potential and input resistance in sheep heart injured by knife or laser1970 · 152 citations