quillaja saponaria/phospholipid

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Unusual penetration of phospholipid mono- and bilayers by Quillaja bark saponin biosurfactant.

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The interactions between a model phospholipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and a biosurfactant Quillaja Bark Saponin (QBS) obtained from the bark of Quillaja saponaria Molina were studied using simple models of biological membranes. QBS is known to interact strongly with the

Novel Colloidal Microstructures of β-Escin and the Liposomal Components Cholesterol and DPPC.

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The discovery of immunostimulating complex formation by the saponin Quil A from the plant Quillaja saponaria with cholesterol and a phospholipid opened up new avenues for the development of drug delivery systems for vaccine application with additional adjuvant properties. In this study, β-escin, a

Saponins from Quillaja saponaria Molina: isolation, characterization and ability to form immuno stimulatory complexes (ISCOMs).

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ISCOMs have received much attention as vaccine adjuvants due to their immunostimulatory effects. They are colloidal particles typically comprised of phospholipids, cholesterol and Quil A, a crude mixture of saponins extracted from the bark of Quillaja saponaria Molina. We have previously shown that

Saponin Interactions with Model Membrane Systems - Langmuir Monolayer Studies, Hemolysis and Formation of ISCOMs.

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Saponins are used in medicine due to their pharmacological and immunological effects. To better understand interactions of saponins with model membranes and natural membranes of, for example, erythrocytes, Langmuir film balance experiments are well established. For most saponins, a strong

Influence of surfactant composition on physical and oxidative stability of Quillaja saponin-stabilized lipid particles with encapsulated ω-3 fish oil.

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The purpose of this study was to investigate the potential of a saponin-rich extract of Quillaja saponaria to replace bile salts in the surfactant formulations for stabilization of nanostructured lipid carriers (NLC). The influence of Quillaja extract and/or high-melting lecithin at different

Novel ISCOMs from Quillaja brasiliensis saponins induce mucosal and systemic antibody production, T-cell responses and improved antigen uptake.

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In the last decades, significant efforts have been dedicated to the search for novel vaccine adjuvants. In this regard, saponins and its formulations as "immunostimulating complexes" (ISCOMs) have shown to be capable of stimulating potent humoral and cellular immune responses, enhanced cytokine

Iscoms containing purified Quillaja saponins upregulate both Th1-like and Th2-like immune responses.

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The immune stimulating complex (iscom) is built up by antigen, cholesterol, phospholipids, and adjuvant active Quillaja saponins. Previous studies have shown that iscoms containing Quil A (a semipurified preparation of saponins) efficiently induce antibody and cell-mediated immune responses. In this

Influence of Quil A on liposomal membranes.

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Quil A is the purified saponin fraction extracted from the bark of Quillaja saponaria Molina. Besides its utilisation as a surfactant, it is commonly used in a pseudo-ternary system with cholesterol and phospholipid to form colloidal structures known as ISCOMs (immunostimulating complexes). Their

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