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Mandal, Manas Kumar; Manna, Emili; Sultana, Habiba; Barai, Manas; Chandra Guchhait, Kartik; Ghosh, Chandradipa; Patra, Anuttam; Nag, Kaushik; Yusa, Shin-ichi; Panda, Amiya Kumar
JCIS open (Amsterdam), 07/2022, Letnik: 6Journal Article
Effect of 1-butyl-3-methylimidazolium chloride ionic liquid (bmimCl, IL) on the monolayer/bilayer of either soy-phosphatidylcholine (SPC) or hydrogenated soy-phosphatidylcholine (HSPC), in combination with 30 mol% cholesterol (Chol), were investigated. Impact of IL on monolayers were explored by measuring the surface pressure (π)-area (A) isotherm with a Langmuir-surface balance. Lift-off area (A0) of the monomolecular films gradually increased A0(HSPC+IL) > A0(SPC+IL), collapse pressures (πc) decreased and passed through minima πc(HSPC+IL) > πc(SPC+IL) with increasing IL concentration (IL). Minimum molecular area (Amin) increased monotonously and compression moduli (Cs−1) followed the sequence (HSPC+IL) > (SPC+IL) at a particular π with respect to IL. Dynamic light scattering studies were carried out to determine the hydrodynamic diameter (dh), zeta potential (Z.P.) and polydispersity index (PDI) values while fluorescence anisotropy studies, using 7-hydroxycoumarin and 1,6-diphenyl-1,3,5-hexatriene, could reveal the micro-viscosity of liposomes. Increased size and rigidity, induced by IL, suggest the formation of leak-proof, condensed liposomes. Disruption of vesicles induced by IL were observed from transmission electron microscopic (TEM) studies. IL induced disintegration of liposome and kinetics of subsequent formation of adsorbed monolayer were accomplished by surface pressure-time isotherms. IL-induced liposomes were substantially less toxic as revealed by MTT assay. These liposomes are considered to be safely used as effective and controlled drug delivery systems. Display omitted
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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