Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems.

Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems. Research Abstract Details 

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Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems. Abstract Text:

A Aumelas,A Serrero,A Durand,E Dellacherie,M Leonard,A Aumelas,A Serrero,A Durand,E Dellacherie,M Leonard,

Nanoparticles combining a hydrophobically modified dextran core and a polysaccharide surface coverage were elaborated. Their suitability for applications like drug delivery was evaluated. The selected polysaccharide, dextran, was chemically modified by the covalent attachment of hydrocarbon groups (aliphatic or aromatic) via the formation of ether links. According to the extent of modification, either water-soluble or water-insoluble dextran derivatives were obtained. The latter exhibited solubility in organic solvents like tetrahydrofuran or dichloromethane saturated with water. Water-soluble dextran derivatives were used as polymeric surfactants for the control of nanoparticles surface characteristics. Nanoparticles were prepared either by o/w emulsion or solvent-diffusion methods. The size and surface properties of dextran nanoparticles were correlated to processing conditions. The stability of colloidal suspensions was examined as a function of ionic strength and related to the particle surface characteristics. The redispersability of freeze-dried suspensions without the addition of cryoprotectant was demonstrated. Finally, the degradability of modified dextrans was compared to that of starting dextran, after enzymatic hydrolysis in the presence of dextranase.

Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems. Publishing Authors By Initials

A Aumelas,A Serrero,A Durand,E Dellacherie,M Leonard,A Aumelas,A Serrero,A Durand,E Dellacherie,M Leonard,

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Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Colloids and surfaces. B, Biointerfaces

VOLUME: 59

Page Numbers: 74-80

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ISSN: 0927-7765

DAY: 3

MONTH: 05

YEAR: 2007

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LANGUAGE: eng

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AFFILIATION: Laboratoire de Chimie Physique Macromoléculaire, UMR 7568 CNRS-Nancy University, ENSIC, BP 20451, 54001 Nancy Cedex, France.

Country: Netherlands

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MEDLINETA: Colloids Surf B Biointerfaces

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