It is well known that sublethal doses of surfactants affect the cellular adhesion in the superficial layers of the exposed epithelia of aquatic animals, introducing a shunt in the active transport pathway, and that they are adsorbed by the cellular membranes, interacting with proteins and lipids and influencing the ion end water permeabilities. It has also been shown that the electrical behaviour of both the isolated and the “in situ” frog skin is heavily affected and that the isoosmotic, active transport coupled, water flow is abolished. We will propose a model for the toxic action of surfactants, based on the analysis of the decay of the electrical potential difference (pd) and short circuit current (scc), which accounts for the mentioned observations.

The influence of surfactants on the frog skin ion and water permeability / F. Celentano, G. Monticelli, M.N. Orsenigo. ((Intervento presentato al convegno International Conference on Water and Ions in Biological Systems tenutosi a Bucharest nel 1980.

The influence of surfactants on the frog skin ion and water permeability

G. Monticelli
Secondo
;
M.N. Orsenigo
Ultimo
1980

Abstract

It is well known that sublethal doses of surfactants affect the cellular adhesion in the superficial layers of the exposed epithelia of aquatic animals, introducing a shunt in the active transport pathway, and that they are adsorbed by the cellular membranes, interacting with proteins and lipids and influencing the ion end water permeabilities. It has also been shown that the electrical behaviour of both the isolated and the “in situ” frog skin is heavily affected and that the isoosmotic, active transport coupled, water flow is abolished. We will propose a model for the toxic action of surfactants, based on the analysis of the decay of the electrical potential difference (pd) and short circuit current (scc), which accounts for the mentioned observations.
surfactant; cellular adhesion; epithelium; aquatic animals; active transport; cellular membrane; ion permeability; water permeability; passive ion transport; frog skin; skin resistance; tight junction; water flow; NPO; LAS
Settore BIO/09 - Fisiologia
United Nations Educational, Scientific and Cultural Organization
Union of Societies of Medical Sciences in the Socialist Republic of Romania
Romanian Biophysical Society
The influence of surfactants on the frog skin ion and water permeability / F. Celentano, G. Monticelli, M.N. Orsenigo. ((Intervento presentato al convegno International Conference on Water and Ions in Biological Systems tenutosi a Bucharest nel 1980.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/245135
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