Saratov JOURNAL of Medical and Scientific Research

Dobrovol'skaya E.I.

Federal Medical and Biophysical Center р.a. A.I. Burnazyan, the Physician-Geneticist at the Center for Biomedical Technologies

Application of cell technologies in thermal burn damage to skin (Practical experience in State Research Center— Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency of Russia)

Year: 2019, volume 15 Issue: №4 Pages: 999-1004
Heading: Тhematic supplement Article type: Original article
Authors: Samoilov A.S., Astrelina Т.А., Aksenenko A.V., Kobzeva I.V., Suchkova Yu.B., Nikitina V.A., Usupzhanova D.Yu., Brunchukov V.A., Brumberg V.A., Rastorgueva A.A., Makhova A.E., Karaseva T.V., Lomonosova Е.Е., Dobrovolskaya E.l., Udalov Yu.D.
Organization: Moscow Helmholtz Research Institute of Eye Diseases, State Research Center— Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Summary:

Purpose: to present the results of the use of autologous regenerative cells of adipose tissue (AT) in treatment of patients with deep thermal burns. Material and Methods. The use of cellular technologies was carried out on 5 patients (4 men and 1 woman) aged 23-45 years, with deep thermal burns of III—IV degree of various etiology and localization, lesions from 1 % to 80%. Patients received conventional conservative therapy for burn wounds. After stabilization of the patient's general condition and positive dynamics of the local process in the wound during the planned surgical treatment of burn surfaces, the biological material of the AT was obtained. The volume of lipoaspirate AT was 195.0±74.2 ml. For clinical use of AT, the stromal-vascular fraction (SVF) of AT was obtained. The patients received intradermal injection of autologous SVF in the amount of 10 million to 50 million cells in a volume of 5 ml in 10-15 points around the damage to skin. Results. Upon examination (2.5 months after the point of introduction of SVF of AT), patients showed good cosmetic and functional results. The skin is soft, elastic, there are no rough hypertrophic and keloid scars, no contractures. Scars do not stand out. Movement in the joints is saved. Conclusion. The use of SVF AT in the early periods after injury contributed to activation of reparative processes in the dermis, which reduced the local inflammatory response, accelerated epithelialization, restoring skin elasticity with a decrease in the severity of fibrous scars and resulted in the lack of mobility in the joints.

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Use of the tricolor FISH-painting method of chromosomes for the analysis of radiation-induced chromosomal aberrations: a pilot study

Year: 2019, volume 15 Issue: №4 Pages: 982-985
Heading: Тhematic supplement Article type: Original article
Authors: Dobrovolskaya E.l., Nugis V.Yu., Snigiryova G.P., Kozlova M.G., Nikitina V.A.
Organization: Russian Scientific Center of Roentgenoradiology , State Research Center— Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency
Summary:

Purpose: to compare the frequency of radiation-induced translocations detected by three-color FISH-method using different sets of DNA probes. Material and Methods. The material for the cytogenetic study was venous blood of one healthy male donor subjected to in vitro gamma-radiation in doses of 0.1-3.0 Gy Cultivation of lymphocytes and preparation of chromosome specimens were carried out using variants of standard techniques. Chromosomes were stained separately with three-color DNA probes: for 1, 4 and 12 pairs and for 2, 3 and 8 pairs. Results. The increase of dose produced frequency of translocations growth when using both sets of DNA probes. When using any of them, the frequencies of FISH-registered translocations in all cells (stable and unstable) did not differ significantly from the same value only in stable cells. A comparison ofthetranslocation frequencies detected using DNA probes of different species also showed absence of statistically significant differences in both all and stable cells. Conclusion. The use of two selected sets of DNA probes demonstrated absence of significant differences between them in the observed frequencies of radiation-induced chromosome translocations.

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A novel comprehensive approach for human vascular allografts cryopreservation and radiation sterilization for the tissue engineering industry

Year: 2015, volume 11 Issue: №4 Pages: 624-632
Heading: Genetics Article type: Original article
Authors: Lauk-Dubitsky S.E., Astrelina Т.А., Saprykin V.P., Fediunin A.A., Paklina O.V., Gordeev A.V., Shakurov A.V., Belikov N.V., Khaidukova I.V., Burkov I.A., Antonov E.A., Ponomarev D.E., Kobzeva I.V., Savrasov G.V., Vorobyov G.V., Brumberg V.A., Nikitina V.A., Suchkova Y.B., Dobrovol'skaya E.I., Karaseva T.V., Gubarev K.K., Bushmanov A.Yu., Samoilov A.S.
Organization: State Scientific Research Center n.a. A.I. Burnasyan — Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow State Technical University n.a. N.E. Bauman, City Clinical Hospital n.a. S.P. Botkin
Summary:

Aim: to verify new techniques for human cadaveric vascular allografts cryopreservation, thawing and sterilization for the tissue engineering purposes. We use polydimethylsiloxane (PDMS) as a well-known, promising coolant. This allowed us to completely omit any cryoprotective or vitrifying solutions. Using of PDMS also makes possible an applying these allografts directly after freezing and decellularization and also it will also provide an opportunity to develop secure protocols of tissue— engineered vascular conduits cryopreservation. Matherial and methods. After mathematical modeling of cooling process and its validation the experiment for sealed (isolated) freezing at low temperature conditions of 30 femoral arterial segments has been conducted. The segments were at least 10 cm in length and taken from 15 cadaveric donors in the age of 65-85 years. The freezing process was carried out using the abovementioned coolant— PDMS, and then physico-mechanical properties of these allografts were evaluated with the special Instron machine. According to the results obtained, a modeling of their sterilization conditions was conducted (the grafts were freezed). Results. By physico-mechanical properties validation and restricted histological analysis it was shown that there was an accordance between freezed/thawed allografts properties and native vessels. Conclusion. The abovementioned approach for allografts cryopreservation and thawing was efficient enough for further work in this direction.

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