Valery F Maksimov

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The chicken chorioallantoic membrane is assessed between days 7 and 20 of incubation using light and electron microscopy with morphometric analysis. The completion of its formation by the middle of embryogenesis is observed, after that a rapid increase in the embryo body mass continues. The bloodstream combines chorionic epithelium, mesoderm, and allantoic(More)
Using light and electron microscopy, more rapid morphological development of m. gastrocnemius as compared to m. pectoralis was demonstrated in chicken by the 10th day. In m. pectoralis some immature fibers with centrally located nuclei are found, its muscle fibers are generally thinner, contain smaller mitochondria which occupy lesser relative volume, and(More)
A novel mechanism of protein biosynthesis regulation in liver under the action of reduced forms of steroid hormones (tetrahydrocortisol) and apolipoprotein A-I (apoA-I) is presented. Kupffer cells play an important role in uptake of the cortisol and high density lipoproteins (HDL) as well as in formation of the active complex,(More)
This review presents recent data on the structure, synthesis, and secretion of cardiac natriuretic peptides. It is known that these hormones have a broad spectrum of activity, but they remain the least studied and poorly understood link in the regulation of the water-salt homeostasis. Emphasis is placed on the problem of ontogenetic formation of the heart(More)
Morphometric analysis revealed no signs of myocardial hypertrophy at the tissue and ultrastructural levels in 3-week-old NISAG rat pups reared by normotensive Wistar females. The severity of myocardial hypertrophy in these animals aging 6 months was similar to that in NISAG rats reared by natural mothers. However, raising conditions during the early(More)
The structural bases of cooperative effect of glucocorticoids and HDL brings about the activation of protein biosynthesis in hepatocytes. Using surviving rat liver it was shown that these two compounds together activate the gene expression which was indicated by increased 3H-uridine incorporation into the total RNA pool. The enhanced incorporation of(More)
Electron microscopy and stereomorphometric analysis of hypertrophic cardiomyocytes in the right atrium of NISAG rats revealed signs of activation of biosynthetic processes: increased relative volume of euchromatin (compared to Wistar rats), high density of nuclear pores, presence of large numerous Golgi complexes, and well-developed endoplasmic reticulum.(More)
The formation, development, and reduction of the capillary network in the chicken chorioallantoic membrane on days 7–20 of egg incubation were studied by light and electron microscopy with morphometry. Specific features in the architectonics and structure of the mesodermal large vessels and their connection to the suprachorial capillaries for provision of(More)
Broad experience in the ultrastructural study of myoendocrine cells of different animal species in normal and experimental conditions allows us to choose a methodology that gives the most comprehensive information on the state of the intracellular secretory apparatus. It was revealed that the combined set of atrial myoendocrine-cell qualitative and(More)
Ultrastructural and stereomorphometric study of the chick embryo right atrium at the 14th day of incubation has shown cardiomyocytes to divide mitotically and to be at different stages of differentiation. The cytoplasm of some muscle cells contains secretory granules that by sizes and morphology can be classified as formed, mature, and dissolved forms. By(More)