Structure and refractive index of fibrin protofibril aggregates according to laser phase microscopy accompanied by DLS and AFM.

The structures, sizes, and refractive indices (RI) of protein aggregates formed in a fibrinogen-thrombin system are examined using laser phase microscopy (LPM) accompanied by dynamic light scattering (DLS) and atomic force microscopy (AFM) measurements. Fibrin aggregates found in pure fibrinogen and fibrinogen with thrombin solutions by the DLS method, after drying the sample, form complex structures of different shapes and sizes on a glass surface. The LPM reveals submicron-sized dimeric structures in the pure fibrinogen solution, elongated micron-length structures, and rectangular structures in the fibrinogen-thrombin sample.

The effect of civil and military flights on coagulation, fibrinolysis and blood flow: insight from a rat model.

Background: Air travel thrombosis continues to be a controversial topic. Exposure to hypoxia and hypobaric conditions during air travel is assumed a risk factor. The aim of this study is to explore changes in parameters of coagulation, fibrinolysis and blood flow in a rat model of exposure to hypobaric conditions that imitate commercial and combat flights.

Effect of iron oxide nanoparticles on fibrin gel formation and its fractal dimension.

In this paper, we studied the influence of nonmagnetic iron oxide nanoparticles on fibrin gel formation and its structure using dynamic light scattering. The surface of nanoparticles produced by a new method in acoustoplasma discharge with cavitation has specific morphology and accelerates the rate of fibrin gel formation, i.e.

Dynamics of statistically confident particle sizes and concentrations in blood plasma obtained by the dynamic light scattering method.

The work is devoted to the study of sizes and concentrations of proteins, and their aggregates in blood plasma samples, using static and dynamic light scattering methods. A new approach is proposed based on multiple repetition of measurements of intensity size distribution and on counting the number of registrations of different sizes, which made it possible to obtain statistically confident particle sizes and concentrations in the blood plasma. It was revealed that statistically confident particle sizes in the blood plasma were stable during 30 h of observations, whereas the concentrations of particles of different sizes varied as a result of redistribution of material between them owing to the protein degradation processes.

Lymnastis of Ukraine with the redescription of Lymnastis novikovi (Coleoptera: Carabidae).

The rare species Lymnastis novikovi Michailov, 1998, described from the single female specimen collected in Ukraine, is redescribed on the basis of new material. We provide the illustrations of the general habitus, the median lobe and its internal sac and describe the habitat of L. novikovi, to increase information about this species.