Journal ArticleDOI
Lateral diffusion in the hydrophobic region of membranes: use of pyrene excimers as optical probes.
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TLDR
A new (optical) method of diffusion measurement is described which allows the determination of the coefficient of lateral diffusion, Ddiff, of aromatic molecules in the hydrophobic region of lipid bilayers using pyrene as a fluorescence probe.About:
This article is published in Biochimica et Biophysica Acta.The article was published on 1974-02-26. It has received 368 citations till now. The article focuses on the topics: Lipid bilayer phase behavior & Pyrene.read more
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Transmembrane control of the receptors on normal and tumor cells: I. Cytoplasmic influence over cell surface components☆
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Nature of the Thermal pretransition of synthetic phospholipids: dimyristolyl- and dipalmitoyllecithin.
TL;DR: The hydrated synthetic lecithins, dimyristoyl and dipalmitoyllecithin, undergo two thermal transitions, a broad low enthalpy "pretransition" prior to the sharp first-order "chain-melting" transition and a structural transformation from a one-dimensional lamellar to a two-dimensional monoclinic lattice consisting of lipid lamellae distorted by a periodic ripple.
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Surfactant-water liquid crystal phases
TL;DR: A general outline of the relationship between phase structure and overall composition can be obtained from a consideration intra-and inter-micellar interactions as mentioned in this paper, which also gives some insight into the relationship of rheological properties and phase structure.
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Quasielastic light-scattering studies of aqueous biliary lipid systems. Mixed micelle formation in bile salt-lecithin solutions.
TL;DR: The inclusion of bile salts in a fixed stoichiometry within the interior of the bilayers is shown to provide a quantitative explanation for the divergence of the mixed micellar sizes, their temperature dependence, and the origin of the lecithin-bile salt phase limit.
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Bioadhesive polymers as platforms for oral-controlled drug delivery: method to study bioadhesion
Kinam Park,Joseph R. Robinson +1 more
TL;DR: To examine a large number of polymers as to their bioadhesive potential and to derive meaningful information on the structural requirements for bioadhesion a new, simple experimental technique that can quantitatively measure bioad adhesive properties of various polymers has been developed.
References
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Molecular motion in spin-labeled phospholipids and membranes
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Lateral phase separation in phospholipid membranes.
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Physical studies of phospholipids. VI. Thermotropic and lyotropic mesomorphism of some 1,2-diacyl-phosphatidylcholines (lecithins)
TL;DR: The thermotropic and lyotropic mesomorphism of saturated 1,2-diacyl-L-phosphatidylcholines (lecithins) has been studied by light microscopy, differential thermal analysis, X-ray diffraction, infrared and nuclear magnetic resonance spectroscopy.
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Studies on lecithin-cholesterol-water interactions by differential scanning calorimetry and X-ray diffraction
TL;DR: The cholesterol controls the fluidity of the hydrocarbon chains of the phospholipid by disruption of the crystalline chain lattice of the gel phase, and by inhibiting the flexing of chains in the dispersed liquid crystalline phase.