Saratov JOURNAL of Medical and Scientific Research

brain

Detection of fibrous astrocytes on histological sections of hippocampi using two different methods of silver impregnation

Summary:

Цель: выделение клеток волокнистой астроцитарной глии на гистологических срезах гиппокампов при использовании двух различных растворов солей серебра. Материал и методы. Гистологические срезы гиппокампов кроликов, разделенные на две группы, импрегнировали растворами азотнокислого и бромистого серебра. Результаты. На гистологических срезах гиппокампов 1-й группы импрегнировались коротколучистые волокнистые астроциты (ВА). Около круглых ядер наблюдали различную плотность расположения глиофибрилл. Во 2-й группе импрегнировались длиннолучистые ВА с радиально расходящимися тонкими глиофибриллярными отростками. Заключение. Правильное представление об истинной структуре многоотростчатых клеток (содержащих глиофибриллы) можно получить при сравнительном изучении и анализе гистологических препаратов, окрашенных с помощью различных методов импрегнации солями серебра.

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2017_04-1_882-885.pdf2.64 MB

Neurospecific proteins as markers of nervous tissue regeneration in focal cerebral contusions

Year: 2017, volume 13 Issue: №3 Pages: 720-722
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Galashina Е.А., Ulyanov V.Yu., Vygodchikova G.Yu., Chibrikova Yu.A., Klimov S.S.
Organization: Saratov State Medical University
Summary:

The aim: to study the dynamics of immunological markers of nervous tissue regeneration in patients with focal cerebral contusions in posttraumatic period. Material and Methods. Quantitative content of human NRG1-beta1, GFAP and anti-SGPG in patients with focal cerebral contusions was analyzed on the 1st-4th, 7th, 14th, 21st and 30th day post-injury, and one time only — in patients of control group. Results. In patients with focal cerebral contusions the content of NRG-1beta1 was characterized by two-phase increase on the 7th and 21st day, GFAP — on the 14th day, anti-SGPG — on the 21st and 30th day compared to the patients of control group. Conclusion. Functional restoration of the brain in cerebral focal contusions in the posttraumatic period is based on the significantly intensified axon and peripheral nervous fiber regeneration processes with intercellular structure regeneration being less intensified. The degree and direction of these processes is predicated upon the dynamics of immunocytochemical markers.

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2017_03-2_720-722.pdf246.33 KB

Microgliocyte argentation on histological sections of hippocampus of rabbits

Summary:

Purpose: to obtain morphological data to identify microglia on histological sections of hippocampus of rabbits using silver salt impregnation. Material and methods. Histological sections of hippocampus of rabbits impregnated with salt deposited silver. Using the Rio Hortega method for detecting fibrous glia, choose the desired chemical composition and acid-base parameters of the silver solution and reducing agent for the detection of microglia. Results. In histological sections of the hippocampus revealed microglia contrast with branched spikes and cells without shoots with thin flagellums. Conclusion. In visiting the experiments carried out in natural conditions, it is crucial to conduct biomedical research in the shortest possible time. We need to get not only the functional results of research, but also by their morphological, substantiating the data. The present method of impregnation microglia can be used as a rapid method for the morphological study of cerebral blood flow and neural tissue hypoxia.

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2016_04-1_692-695.pdf2.02 MB

Identify of argyrophilic cells of astrocytic glia to determine the hypoxic changes in nerve tissue

Summary:

Aim: identification of astrocytic glia cells impregnated to determine the hypoxic changes in nerve tissue. Material and methods. Condition of hypoxia was simulated in laboratory rats with "jar hypoxia". For the impregnation of histo-logical sections were used as a basis for the method of Rio-Gortega. Results. Silver impregnation method revealed several morphological forms of astrocytic cells in hypoxic changes in the nervous tissue of the brain. Conclusion. There were marked morphological brain astrocyte cell forms reflecting their functional state. Traced compensatory changes astrocytic cell depletion of these processes and the appearance of pathological morphological characters, up to the fragmentation and destruction of cells.

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2015_04-01_649-652.pdf895.07 KB

MRI capabilities of diagnostics of multicentricity brain lesions

Year: 2012, volume 8 Issue: №2 Pages: 475-477
Heading: Neurology Article type: Review
Authors: Kondrat`eva O.A., Chekhonatskaya M.L., Priezshzeva V.N., Hmara T.G
Organization: Saratov State Medical University
Summary:

Тhe problem of multicentricity brain damage is relevant in connection with the presence of many diseases, shown data of radiation syndrome. Timely detection of pathological processes allows to carry out adequate therapy from the early stages of the disease, which considerably improves the course and prognosis of the disease. The article presents some aspects of differential diagnostics of vascular, infammatory, infectious and hereditary diseases, shown multicen-tricity lesions of the substance of the brain MRI study.

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201202_475-477.pdf268.43 KB