Search results for "VESICULAS"
showing 3 items of 3 documents
Composite soy lecithin–decylpolyglucoside vesicles: A theoretical and experimental study
2008
In the present work, vesicles made with soy lecithin and a commercial mixture of alkyl polyglucosides were prepared and characterized. Vesicles with a constant amount of soy lecithin and an increasing amount of a decylpolyglucoside surfactant, (OrNS10), were formulated and their physicochemical properties were studied with the aim to design a drug delivery system suitable for different applications. To this purpose, morphology, size distribution, ζ-potential and apparent viscosity of the prepared vesicles were studied. Vesicles were also characterized by using optical and light polarized microscopy, transmission electron microscopy and photon correlation spectroscopy. A stability study was …
Functional characterization of Coat Protein I (COPI) subunit isoforms in Arabidopsis thaliana
2022
La vía secretora temprana implica el transporte bidireccional entre el retículo endoplásmico (ER) y el aparato de Golgi y está mediada por vesículas recubiertas del complejo de proteína de cubierta I (COPI) y del complejo de proteína de cubierta II (COPII). Las vesículas COPII están involucradas en el transporte del RE al aparato de Golgi, mientras que las vesículas COPI median el transporte intra-Golgi y el transporte retrógrado desde el aparato de Golgi al RE. El componente clave de la cubierta de COPI es un complejo citoplasmático denominado coatómero, que se compone de siete subunidades (α/β/β’/γ/δ/ε/ζ) y se recluta en bloque desde el citosol hacia las membranas de Golgi. Se ha descrito…
Influence of the electrical interface properties on the rheological behavior of sonicated soy lecithin dispersions
2006
A significant effect, on the rheological behavior, due to the electrical properties of vesicles formed from concentrated soy lecithin dispersions have been studied in this work. The rheopectic behavior of concentrated soy lecithin dispersions (120, 150, 180, 210 and 240 g L−1) prepared by swelling–light sonication–freezing–unfreezing procedure is studied and it is specially emphasized on the transition under steady shear from lamellar phase of planar sheets to closed structures as multilamellar vesicles. Samples have been exposed to a different number of sonication cycles (from 0 to 100) and the changes in the hysteresis loop area, the apparent viscosity and the electrophoretic mobility hav…