Dielectric Breakdown of the Erythrocyte Membrane Enhances Transbilayer Mobility of Phospholipids

Dielectric breakdown of erythrocytes is shown to result in a loss of asymmetry of phosphatidylethanolamine and in a markedly enhanced transbilayer mobility of exogenous lysophosphatidylcholine. The effect is much more pronounced in non-resealed cells than in cells resealed after the breakdown. A casual relationship between the structural defects in the lipid phase, indicated by these results, and fusion by dielectric breakdown is discussed.