Distribution of coexisting solid and fluid phases alters the kinetics of collapse from phospholipid monolayers

Article Abstract:

The binary films containing dioleoyl phosphatidylcholine-dipalmitoyl phosphatidylcholine (DPPC) mixtures between 10 and 100% DPPC were studied in order to determine the way coexistence of liquid-expanded (LE) and tilted-condensed (TC) phases in phospholipid monolayers affects collapse from the air/water interface. Results reveal that although coexisting solid and fluid phases collapse to extents that are independent, the kinetics of collapse, corrected for differences in LE area, depend on the distribution of the two phases.

---

Thermodynamic and infrared analyses of the interaction of chlorpromazine with phospholipid monolayers

Article Abstract:

An investigation of the interaction between chlorpromazine (CPZ) and monolayers of 1,2-dipalmitoyl-sn-3-glycerophosphatidylcholine (DPPC) and 1,2-dipalmitoyl-sn-3-glycero[phospho-rac-(1-glycerol)] (DPPG), both at the air/water interface and in transferred Langmuir-Blodgett films is presented. The IR and compressibility results demonstrate that the effect from CPZ could not be correlated with temperature changes in the subphase for pure monolayers, in contrast to models proposed by other authors.

Analysis, Gibbs' free energy, Chlorpromazine

---

Interaction of the glycoalkaloid tomatine with DMPC and sterol monolayers studied by surface pressure measurements and Brewster angle microscopy

Article Abstract:

The interaction of the glycoalkaloid tomatine with monolayers of dimyristoylphosphatidylcholine (DMPC) and cholesterol, as well as other selected sterols, were studied using surface pressure measurements at constant area and Brewster angle microscopy. It is found that the interaction of tomatine with cholesterol-containing monolayer results in a surface pressure increase accompanied by the appearance of a mottled texture.

Cholesterol, Sterols, Alkaloids

Similar abstracts:

• Abstracts: Evolution of the interface and metal film morphology in the vapor deposition of Ti on hexadecanethiolate hydrocarbon monolayers on Au
• Abstracts: Soft-UV photolithography using self-assembled monolayers. Microscopic folds and macroscopic jerks in compressed lipid monolayers
• Abstracts: Enthalpy-Entropy and cavity decomposition of alkaline hydration free energies: numerical results and implications for theories of hydrophobic solvation
• Abstracts: Decomposition of the solvation free energies of deoxyrilbonuceoside triphosphates using the free energy perturbation method
• Abstracts: Aggregation of hydrocarbons in dilute aqeous solutions. Model for the nucleation mechanism of protein folding

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.