Compartmentalized and internally structured particles for drug delivery--a review.

Abstract:

:Recent advances in the fabrication, characterization and application of micro- and nano-particles that possess a non-uniform internal structure are reviewed. The particle structures include core-shell particles, particles with multiple cores or a multi-layered structure, porous particles with both regular and random pore structure, as well as complex composite particles possessing several of the above features. Particles based on "hard" inorganic materials such as silica, "soft" organic materials such as polymers and their composites are considered. The fabrication approaches include bottom-up self-assembly techniques, templating methods, microfluidics, and various emulsion-based routes to structured micro- and nano-particle formation, combined with both physical (e.g. Pickering emulsions) and chemical (e.g. polymerization, precipitation) processes for the material deposition. The applications of the structured particles for the encapsulation and controlled delivery of active substances are then reviewed with emphasis on those systems where the complex particle structure can provide specific benefits such as in-situ formation of the active substance or precise control over the release profile. Likely future research directions and prospects are discussed.

journal_name

Curr Pharm Des

authors

Čejková J,Štêpánek F

doi

10.2174/1381612811319350007

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

6298-314

issue

35

eissn

1381-6128

issn

1873-4286

pii

CPD-EPUB-20130304-3

journal_volume

19

pub_type

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