Nanostructured zinc carbonate hydroxide microflakes: assessing the toxicity against erythrocytes and L929 cells.

Nanostructured materials have been suggested to be used as a source of dietary zinc for livestock animals. In this study, we assessed the cytotoxicity of newly synthesized nanostructured zinc carbonate hydroxide (ZnCH) Zn(CO)(OH)microflakes. Cytotoxicity of the microflakes was assessed against murine L929 cell line and rat mature erythrocytes.

Oxidative stress-modifying effects of TiOnanoparticles with varying content of Ti(Ti) ions.

Nanoparticles (NPs) with reactive oxygen species (ROS)-regulating ability have recently attracted great attention as promising agents for nanomedicine. In the present study, we have analyzed the effects of TiOdefect structure related to the presence of stoichiometric (Ti) and non-stoichiometric (Tiand Ti) titanium ions in the crystal lattice and TiONPs aggregation ability on HO- and tert-butyl hydroperoxide (tBOOH)-induced ROS production in L929 cells. Synthesized TiO-A, TiO-B, and TiO-C NPs with varying Ti(Ti) content were characterized by x-ray powder diffraction, transmission electron microscopy, small-angle x-ray scattering, x-ray photoelectron spectroscopy, and optical spectroscopy methods.

[Differences in the elastic work of breathing of the pulmonary parenchyma in patients with bronchial asthma and COPD].

Aim: To determine and compare the work of breathing to overcome elastic resistance (Ael) in patients with bronchial asthma (BA) and chronic obstructive pulmonary disease (COPD) with similar changes in the elastic properties of the parenchyma in the same settings of ventilation disorders (grade 1).

Materials And Methods: Differences in the manifestations of similar changes in the elastic properties of the lungs in patients with BA and COPD were evaluated. To identify differences, a comparative study was conducted on Аel overcome in BA patients with positive bronchodilator (with salbutamol) and bronchoconstrictor (with methacholine) tests, with reduced and preserved bronchial conductance (groups 1 and 2, respectively), and in COPD patients with negative bronchodilator and bronchoconstrictor tests (group 3).

Laser Synthesis of Cerium-Doped Garnet Nanoparticles.

The application of a pulsed laser ablation technique for the generation of cerium-doped garnet nanoparticles in liquids is investigated. The morphological and optical properties of the obtained nanoparticles are demonstrated. Features introduced by the single crystals of GdAlGaO:Ce, LuAlO:Ce, and YAlGaO:Ce from which the nanoparticles are generated, as well as the parameters of a liquid media on the garnet nanoparticle generation are experimentally studied using TEM and UV-Vis spectroscopy methods.

Assessing the Cytotoxicity of TiO Nanoparticles with a Different Ti(Ti)/Ti Ratio.

Titanium dioxide (TiO) nanoparticles are promising biomedical agents characterized by good biocompatibility. In this study, we explored the cytotoxicity of TiO nanoparticles with a different Ti(Ti)/Ti ratio and analyzed the efficiency of eryptosis indices as a tool in nanotoxicology. Two types of TiO nanoparticles (NPs) were synthesized by the hydrolysis of titanium alkoxide varying the nitric acid content in the hydrolysis mixture.