کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
608364 880580 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stability of binary model membranes—Prediction of the liposome stability by the Langmuir monolayer study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Stability of binary model membranes—Prediction of the liposome stability by the Langmuir monolayer study
چکیده انگلیسی

In this paper, usefulness of the Langmuir monolayer study is demonstrated for predictions of the stability of liposomes composed of dipalmitoyl phosphatidylcholine (DPPC) and cholesterol (Chol). Thermodynamic analysis of the surface pressure (π)–area (A) isotherms of the DPPC/Chol systems was performed, which allowed for concluding on miscibility of the components, their molecular packing, and the interactions between molecules. It was found that the most stable system, in which the strongest interactions between molecules occured, was DPPC/Chol at xChol = 0.25. The stability of liposomes of the same composition as that in the Langmuir monolayers was analyzed by determining the size distribution of vesicles and the polydispersity as a function of time. The changes of these parameters confirmed that the system of the greatest stability is that with low Chol content.

Figure optionsDownload high-quality image (105 K)Download as PowerPoint slideHighlights
► Stable DPPC/Chol complexes of 3:1 stoichiometry exist at the air/water interface.
► The most stable liposomes contain the smallest amount of Chol (xChol = 0.25).
► Usefulness of the Langmuir monolayer study to predict stability of liposomes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 372, Issue 1, 15 April 2012, Pages 212–216
نویسندگان
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