Fluorescence study of the fluidity and cooperativity of the phase transitions of zwitterionic and anionic liposomes confined in sol-gel glasses

Article Abstract:

The thermotropic, physical, and dynamical properties of large unilamellar liposomes formed from either 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) or 1,2-dimyristoyl-sn-glycero-3-[phospho-rac-glycerol] (DMPG) encapsulated in sol-gel matrixes are characterized. The results show that the electrostatic interactions between phospholipid polar heads and the porous surface of the host matrix play a vital role for the preservation of the structural integrity of encapsulated bilayer.

author: Esquembre, Rocio, Ferrer, Maria L., Gutierrez, Maria C., Mallavia, Ricardo, Mateo, C. Reyes
Anisotropy, Thermal properties, Fluorescence spectroscopy, Polarization (Light), Zwitterions

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Charge renormalization in planar and spherical charged lipidic aqueous interfaces

Article Abstract:

The charge renormalization in planar and spherical charged lipidic aqueous interfaces are investigated by means of thermodynamic and electrokinetic measurements. The results have shown that a strong charge renormalization occurs, whose strength depends on the geometry of the mesoscopic system, and the dependence of the effective charge on the bare charge is discussed with respect to analytical approximation based on the Poisson-Boltzmann equation.

author: Bordi, Federico, Cametti, Cesare, Sennato, Simona, Paoli, Beatrice, Marianecci, Carlotta
Electrolyte solutions, Poisson distribution, Renormalization (Physics)

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Effect of coenzyme [Q.sub.10] incorporation on the characteristics of nanoliposomes

Article Abstract:

The effect of coenzyme [Q.sub.10] (Co[Q.sub.10]) incorporation on the characteristics of nanoliposomes, especially the hydrocarbon chain structures of membrane lipids, is investigated. The results have indicated that Co[Q.sub.10] might intercalate between lipid molecules and perturb the bilayer structure.

author: Xiaoming Zhang, Shuqin Xia, Shiying Xu, Fang Zhong
Usage, Phospholipids, Atomic force microscopy, Report, Coenzyme Q10

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subjects list: Analysis, Liposomes, Structure, Chemical properties
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