2007
DOI: 10.1590/s1516-93322007000200003
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Lipossomas e suas aplicações terapêuticas: estado da arte

Abstract: Lipossomas são vesículas constituídas de uma ou mais bicamadas INTRODUÇÃOAlec Bangham há 40 anos com sua observação pioneira de que fosfolipídeos em soluções aquosas podem formar estruturas fechadas em bicamadas, permitiu que a pesquisa sobre os lipossomas percorresse um longo caminho, convertendo-os de simples objetos de pesquisa biofísica em carreadores terapêuticos para numerosas aplicações clínicas (Torchilin, 2005).Os primeiros resultados das pesquisas foram, entre-

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Cited by 73 publications
(64 citation statements)
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“…However, the lipid composition of the liposomes may destabilize such systems. 67 The antioxidant activity of liposomes prepared from phosphatidylcholine containing γ-oryzanol showed, in an in vitro experimental model, that concentrations of 50-100 μM of this compound are able to inhibit free radical generation. As γ-oryzanol is poorly soluble in water, this effect is achieved only when γ-oryzanol is incorporated during liposome preparation; when exogenously added to the formulation, this effect does not exist.…”
Section: Trends In the Use Of Rice Bran Oil Or Its Derivates In Pharmmentioning
confidence: 99%
“…However, the lipid composition of the liposomes may destabilize such systems. 67 The antioxidant activity of liposomes prepared from phosphatidylcholine containing γ-oryzanol showed, in an in vitro experimental model, that concentrations of 50-100 μM of this compound are able to inhibit free radical generation. As γ-oryzanol is poorly soluble in water, this effect is achieved only when γ-oryzanol is incorporated during liposome preparation; when exogenously added to the formulation, this effect does not exist.…”
Section: Trends In the Use Of Rice Bran Oil Or Its Derivates In Pharmmentioning
confidence: 99%
“…The phosphatidylcholines are the mostly used due to their stability and their ability to against in pH changes or changes in concentrations of salt in the product or in biological environment. [7] Liposomes are distinguished in terms of their size (small, intermediate, or large), bilayers count (unilamellar and multilamellar), composition, and mechanism of delivery of drug. Small unilamellar vesicles comprise of a single lipid bilayer with an average diameter ranging from 25 to 75 nm.…”
Section: Review Articlementioning
confidence: 99%
“…Os lipossomas variam de acordo com suas características estruturais, podendo assim ser divididos em classe diferentes, tais como: lipossomas convencionais; catiônico; aniônico; de longa circulação; sítio-específicos; virossomas e DNA-plasmídeo encapsulado em lipossomas catiônicos (Batista et al, 2007).…”
Section: Figuraunclassified