Biophysics
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Diaphragm muscle and its feed artery after chronic respiratory airway obstruction in rats
Biophysics - Tập 55 - Trang 826-830 - 2011
A chronic respiratory load was produced in Wistar rats by tracheal binding to produce a twofold increase of pleural pressure oscillation amplitude during respiration. Eight weeks after the surgery, a higher proportion of type-I muscle fibers (MFI) in the costal diaphragm along with a greater MFI cross-section area and a higher succinate dehydrogenase activity in MFII in the lumbar diaphragm were o...... hiện toàn bộ
Dinitrosyl iron complexes with thiol-containing ligands in plant tissues
Biophysics - Tập 62 - Trang 450-455 - 2017
The formation of dinitrosyl iron complexes with thiol-containing ligands in plant tissues (parsley and apple leaves) in the presence of nitric monoxide was demonstrated using electron paramagnetic resonance. In two types of tissues dinitrosyl iron complexes are predominantly represented by the binuclear diamagnetic form. This diamagnetic form can be transformed in EPR-detectable mononitrosyl iron ...... hiện toàn bộ
Cluster melting of DNA-actinomycin complexes
Biophysics - Tập 56 - Trang 40-46 - 2011
Sensitive methods of differential UV spectrophotometry and differential scanning microcalorimetry were used to study the interaction of small and large quantities of the natural antitumor antibiotic actinomycin D with clusters of native and fragmented calf thymus DNA during thermal melting. At micromolar (physiological) concentrations, actinomycin is incorporated in untwisted sites of DNA rather t...... hiện toàn bộ
Determination of cilium power on the foot sole of the freshwater snail Lymnaea stagnalis
Biophysics - Tập 60 - Trang 131-134 - 2015
In this study, we have determined the power of the cilium on the foot sole of a medium-sized pond snail, Lymnaea stagnalis, gliding upward in anaerobic water. As has been shown, the foot sole houses approximately 1.3 · 109 cilia, displaying a total power of 1.47 · 10−6 W, the power of one cilium being 1.1 · 10−15 W and of a single ciliary beat being 1.1 · 10−16 W.
The Effect of Cardiac Myosin-Binding Protein C on Calcium Regulation of the Actin–Myosin Interaction Depends on Myosin Light Chain Isoforms
Biophysics - - 2019
Abstract—In addition to troponin and tropomyosin, cardiac myosin-binding protein C (cMyBP-C), which has an effect on the function of myosin and thin filament activation, is involved in regulation of the actin–myosin interaction in the myocardium. The β-isoform of myosin heavy chain expressed in slow skeletal muscles is identical to that in the myocardium; however, myosin isoforms in slow skeletal ...... hiện toàn bộ
The problem of stability of organisms after cryopreservation (fungi as example)
Biophysics - Tập 54 - Trang 626-630 - 2010
The results of research on the consequences of cryopreservation of fungi testifying to stability of their morphology are reviewed, and a number of facts indicating changes in the properties of fungi and the mutagenicity of cryopreservation are presented. The investigations of the last decade confirm Rozanov’s hypothesis that cryopreservation must increase the resource of hereditary variation in th...... hiện toàn bộ
Analysis of the role of some components of culture media during the proliferation of mouse neuroblastoma NIE-115 cells
Biophysics - Tập 55 - Trang 429-434 - 2010
The values of the parameters of serum-free media (concentration of Na+, amino acids, and carbohydrates, as well as the pH values) have been determined at which the rate of the differentiation of neuroblastoma cells is minimal, and the rate of proliferation is maximal. It was shown that media inducing the differentiation of 70% of cells during the cell cycle provide the maximal time of survival of ...... hiện toàn bộ
Detection of cardiac pathologies using dimensional characteristics of RR intervals in electrocardiograms
Biophysics - Tập 51 Số 1 - Trang 115-119 - 2006
Reconstruction of the spatial structure of inulinase from Kluyveromyces marxianus to find regulatory pathways of its catalytic activity
Biophysics - Tập 61 - Trang 565-571 - 2016
Reconstruction of the spatial structure of inulinase (EC 3.2.1.7) from Kluyveromyces marxianus (an enzyme that hydrolyzes inulin and other fructose-based polymers to fructose) was carried out by highthroughput computational modeling. A structural model of a closely related homologous protein, viz., invertase from yeast Saccharomyces cerevisiae (PDB-ID: 4EQV), was used as a template. The reconstruc...... hiện toàn bộ
Changes in the electrophoretic mobility of erythrocytes under the action of low-intensity pulsed magnetic field
Biophysics - Tập 55 - Trang 583-585 - 2010
Exposure of intact rats and human erythrocytes to low-intensity pulsed magnetic field leads to similar biphasic changes in the electrophoretic mobility of erythrocytes; this is accompanied by modification of their membrane and cytoskeletal protein spectrum.
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