title: Leakage from egg phosphatidylcholine vesicles induced by Ca2+ and alcohols.
abstract: The results shown in this paper indicate that the permeability properties of egg yolk phosphatidylcholine sonicated vesicles as detected by the leakage of carboxy fluorescein changes according to the Ca2+ content. Vesicles containing Ca2+ show a higher rate of leakage than those containing Na+ solutions in response to the increase of Ca2+ concentration in the outer solution. The results are interpreted in terms of the rigidity promoted by Ca2+ and are compared to those obtained with long and short chain alcohols.
authors: Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Facultad de Ciencias Exactas, UNLP, La Plata, Argentina.
authors: E A
authors: EA
authors: Disalvo
mesh_terms: D002118:Calcium / Q000494:pharmacology*; D004530:Egg Yolk; D005233:Fatty Alcohols / Q000494:pharmacology*; D005452:Fluoresceins; D008560:Membrane Fluidity; D008567:Membranes, Artificial; D010713:Phosphatidylcholines; D012964:Sodium / Q000494:pharmacology; D013696:Temperature
chemical_list: D005233:Fatty Alcohols; D005452:Fluoresceins; D008567:Membranes, Artificial; D010713:Phosphatidylcholines; C024098:6-carboxyfluorescein; C005031:cetyl alcohol; D012964:Sodium; D002118:Calcium