New Composite Contrast Agents Based on Ln and Graphene Matrix for Multi-Energy Computed Tomography.

The subject of the current research study is aimed at the development of novel types of contrast agents (CAs) for multi-energy computed tomography (CT) based on Ln-graphene composites, which include Ln (Ln = La, Nd, and Gd) nanoparticles with a size of 2-3 nm, acting as key contrasting elements, and graphene nanoflakes (GNFs) acting as the matrix. The synthesis and surface modifications of the GNFs and the properties of the new CAs are presented herein. The samples have had their characteristics determined using X-ray photoelectron spectroscopy, X-Ray diffraction, transmission electron microscopy, thermogravimetric analysis, and Raman spectroscopy.

In Vitro and In Vivo Antimicrobial Activity of the Novel Peptide OMN6 against Multidrug-Resistant .

The rapid worldwide spread of antimicrobial resistance highlights the significant need for the development of innovative treatments to fight multidrug-resistant bacteria. This study describes the potent antimicrobial activity of the novel peptide OMN6 against a wide array of drug-resistant clinical isolates. OMN6 prevented the growth of all tested isolates, regardless of any pre-existing resistance mechanisms.

Chances and Challenges of Registry-Based Pharmacovigilance in Multiple Sclerosis: Lessons Learnt from the Implementation of the Multicenter REGIMS Registry.

The long-term and potential rare side effects of new immunomodulating drugs for the treatment of multiple sclerosis (MS) are often not well known. Spontaneous case report systems of adverse drug effects are a valuable source in pharmacovigilance, but have several limitations. Primary data collections within registries allow a comprehensive analysis of potential side effects, but face several challenges.

[The Method of Assessment of the Population Risk of Cardiovascular Diseases: Rationale and Examples of Application].

Epidemiological studies in cardiology often are confronted with the need of modeling the population dependence of the development of cardiovascular diseases (CVD) on a complex of influencing risk factors (RF). A method for assessment the CVD population risk is proposed, the calculation of which assumes the population group as the unit of analysis, and the prevalence of risk factors in this group as the input data. Calculation of the population risk is build taking into account predictive value of risk factors basing on their contribution to CVD prevalence.

The role of laser power and pullback velocity in the endovenous laser ablation efficacy: an experimental study.

Endovenous laser ablation is an effective and minimally invasive alternative to surgical removal of incompetent veins. However, many controversies concerning optimal laser parameters usage in this procedure still remain. The purpose of this experimental study was to assess the adequate parameters required for vein wall destruction and to evaluate the role of fiber pullback velocity on vessel wall degradation.