Nanoconfinement effects on the dynamics of an ionic liquid-based electrolyte probed by multinuclear NMR.

The measurement of ion diffusivity inside nanoporous materials by Pulsed-Field Gradient (PFG) NMR is not an easy task due to enhanced NMR relaxation. Here, we employed multinuclear (H, P, and Li) NMR spectrometry and diffusometry to probe ion dynamics of a fluorine-free battery electrolyte comprising the [P][MEEA] ionic liquid (IL) and LiMEEA salt in a 7 : 3 molar ratio, confined in three different nanoporous SiO glasses with pore diameters of 3.7, 7 and 98 nm.

Effects of Natural Rhamnolipid Mixture on Dioleoylphosphatidylcholine Model Membrane Depending on Method of Preparation and Sterol Content.

Rhamnolipids as biosurfactants have a potentially wide range of applications, for example, as "green" surfactants or components of drug delivery systems, which is associated with the features of their interaction with cell membranes. However, as noted in the literature, those kind of features have not been sufficiently studied now. This paper presents a study of the interaction of a natural mixture of rhamnolipids produced by bacteria of the rhizosphere zone of plants with model membranes-liposomes based on dioleoylphosphatidylcholine (DOPC), depending on the method of their preparation and the content of sterols-ergosterol, cholesterol, lanosterol.

[Combined treatment of colorectal cancer followed by metastatic liver injury].

Aim: To increase the effectiveness of treatment of colorectal cancer followed by metastatic liver lesion.

Material And Methods: This study included 319 patients with colorectal cancer and metastatic liver lesion Gennari grade I, II, and III for the period from 2002 to 2017. All patients received combined treatment.

Interaction of polyacrylic acid with lipid bilayers: effect of polymer mass.

Polyanion-coated lipid vesicles are proposed to have an appreciable potential for drug delivery because of their ability to control the permeability of lipid bilayers by environmental parameters such as pH and temperature. However, details of the interaction of this class of polymers with lipids and their mechanisms of induced permeability are still being debated. In this work, we applied (1)H NOESY to study details of the interaction of polyacrylic acid (PAA) fractions of molecular weights 5 and 240 kDa with dimyristoylphosphatidylcholine vesicles.

Self-diffusion in a hyaluronic acid-albumin-water system as studied by NMR.

Hyaluronic acid (HA) is an anionic biopolymer that is present in many tissues and can be involved in cancerous neoformations. HA can form complexes with proteins (particularly, serum albumin) in the body. However, HA structures and processes involving HA have not been extensively studied by NMR because the molecule's rigid structure makes these studies problematic.