INVESTIGADORES
DISALVO Edgardo anibal
artículos
Título:
Effect of Ca2+on the cryoprotectant action of trehalose
Autor/es:
L.S. BAKAS ; DISALVO. E ANIBAL
Revista:
CRYOBIOLOGY
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 1991 vol. 28 p. 347 - 353
ISSN:
0011-2240
Resumen:
The competitive effect of Ca2+ on the cryoprotective action of carbohydrates has been investigated during freeze-thaw processes of unilamellar egg phosphatidylcholine vesicles. Ca2+ inhibits the cryoprotection achieved by trehalose to a greater extent than other sugars such as galactose, sucrose, and fructose. The cryoprotection by trehalose is also dependent on the Ca2+ concentration in the inside solution of the vesicle, even in the absence of external Ca2+. The competitive effect of Ca2+/trehalose is interpreted as a consequence of the different amount of interfacial water displaced by each compound in their adsorption on the water/lipid interface.
