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  1. Article ; Online: Comparative Study of HIF-1α- and HIF-2α-Immunopositive Neurons and Capillaries in Rat Cortex under Conditions of Tissue Hypoxia.

    Chertok, V M / Nevzorova, V A / Zakharchuk, N V

    Bulletin of experimental biology and medicine

    2018  Volume 165, Issue 4, Page(s) 516–520

    Abstract: We measured the content of HIF-1α and HIF-2α-immunopositive neurons and microvessels in the brain of Wistar rats during the first 24 h of tissue hypoxia induced by subcutaneous injection of cobalt dichloride (50 mg/kg). In control rats (without hypoxia), ...

    Abstract We measured the content of HIF-1α and HIF-2α-immunopositive neurons and microvessels in the brain of Wistar rats during the first 24 h of tissue hypoxia induced by subcutaneous injection of cobalt dichloride (50 mg/kg). In control rats (without hypoxia), immunohistochemical marker HIF-2α in cortex of parietal lobe was not detected, and HIF-1α was detected only in few weakly stained pale neurons and capillaries. In 30 min after injection of the cobalt salt, the number of HIF-1α
    MeSH term(s) Animals ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; Brain/metabolism ; Capillaries/metabolism ; Cerebral Cortex/metabolism ; Hypoxia/metabolism ; Hypoxia-Inducible Factor 1, alpha Subunit/metabolism ; Male ; Neurons/metabolism ; Rats ; Rats, Wistar
    Chemical Substances Basic Helix-Loop-Helix Transcription Factors ; Hypoxia-Inducible Factor 1, alpha Subunit ; endothelial PAS domain-containing protein 1
    Language English
    Publishing date 2018-08-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390407-6
    ISSN 1573-8221 ; 0007-4888 ; 0365-9615
    ISSN (online) 1573-8221
    ISSN 0007-4888 ; 0365-9615
    DOI 10.1007/s10517-018-4207-6
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  2. Article: Kletochno-molekuliarnye mekhanizmy reguliatsii angiogeneza v golovnom mozge.

    Chertok, V M / Zakharchuk, N V / Chertok, A G

    Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

    2017  Volume 117, Issue 8. Vyp. 2, Page(s) 43–55

    Abstract: This review presents the data on cellular and molecular mechanisms of angiogenesis regulation linked to the vascular epithelium. According to current conceptions, activated endothelial cells and their predecessors (progenitor cells) are involved in the ... ...

    Title translation The cellular and molecular mechanisms of angiogenesis regulation in the brain.
    Abstract This review presents the data on cellular and molecular mechanisms of angiogenesis regulation linked to the vascular epithelium. According to current conceptions, activated endothelial cells and their predecessors (progenitor cells) are involved in the regulation of angiogenesis. These cells synthesize angiogenic molecules differing by the chemical structure and mechanism of biological effect and allowing a direct or indirect control over each stage of angiogenesis. Both the excess and insufficient angiogenesis can lead to fast and irreversible changes in nervous tissue under certain conditions. For this reason, the balance in the system of molecular stimulators and inhibitors of angiogenesis is especially important for brain function. Without adequate reperfusion of an affected brain area the post-stroke neuroreparation, which can be provided with timely stimulation of angiogenesis, is unattainable and the intensification of this process in tumors, on the contrary, has adverse consequences. Growth of a tumor and its metastatic spread are substantially associated with an increase in the level of tumor tissue vascularization, and blocking angiogenesis is often the only productive way to limit the growth of a tumor. However our knowledge of mechanisms of angiogenesis regulation in the brain on the cellular and molecular level in physiological and pathological conditions is still insufficient, and, therefore, the influence of angiogenic factors on tissue targets do not always cause the expected effects.
    MeSH term(s) Brain/blood supply ; Brain/physiology ; Humans ; Neovascularization, Pathologic/physiopathology ; Neovascularization, Physiologic ; Vascular Endothelial Growth Factor A
    Chemical Substances Vascular Endothelial Growth Factor A
    Language Russian
    Publishing date 2017-10-05
    Publishing country Russia (Federation)
    Document type Journal Article ; Review
    ZDB-ID 1201462-x
    ISSN 2309-4729 ; 1997-7298 ; 0044-4588
    ISSN (online) 2309-4729
    ISSN 1997-7298 ; 0044-4588
    DOI 10.17116/jnevro20171178243-55
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  3. Article ; Online: Dynamics of Distribution of Capillaries with Matrix Metalloproteinase-2 and Its Tissue Inhibitor in Rat Brain during Development of Experimental Hypertension.

    Chertok, V M / Chertok, A G / Zakharchuk, N V / Nevzorova, V A

    Bulletin of experimental biology and medicine

    2018  Volume 164, Issue 3, Page(s) 397–401

    Abstract: The capillaries containing MMP-2 and its tissue inhibitor TIMP-2 were examined in cerebral cortex and white matter obtained from intact Wistar rats (n=5) and the rats with progressing experimental renovascular hypertension (n=35). In hypertensive rats, ... ...

    Abstract The capillaries containing MMP-2 and its tissue inhibitor TIMP-2 were examined in cerebral cortex and white matter obtained from intact Wistar rats (n=5) and the rats with progressing experimental renovascular hypertension (n=35). In hypertensive rats, the changes in intensity of the immunohistochemical reaction and in the density of capillaries expressing TIMP-2 significantly differed from the corresponding values in MMP-2-positive capillaries, which resulted in pronounced deviation of MMP-2/TIMP-2 index from the control level (especially in cerebral cortex) probably attesting to enhanced risk of complications in cases with arterial hypertension.
    MeSH term(s) Animals ; Capillaries/metabolism ; Capillaries/physiopathology ; Disease Models, Animal ; Disease Progression ; Gene Expression Regulation ; Hypertension, Renovascular/genetics ; Hypertension, Renovascular/metabolism ; Hypertension, Renovascular/physiopathology ; Immunohistochemistry ; Kidney/blood supply ; Kidney/metabolism ; Kidney/physiopathology ; Ligation ; Male ; Matrix Metalloproteinase 2/genetics ; Matrix Metalloproteinase 2/metabolism ; Parietal Lobe/blood supply ; Parietal Lobe/metabolism ; Parietal Lobe/physiopathology ; Rats ; Rats, Wistar ; Renal Artery/surgery ; Renal Veins/surgery ; Tissue Inhibitor of Metalloproteinase-2/genetics ; Tissue Inhibitor of Metalloproteinase-2/metabolism ; White Matter/blood supply ; White Matter/metabolism ; White Matter/physiopathology
    Chemical Substances Tissue Inhibitor of Metalloproteinase-2 (127497-59-0) ; Matrix Metalloproteinase 2 (EC 3.4.24.24) ; Mmp2 protein, rat (EC 3.4.24.24)
    Language English
    Publishing date 2018-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390407-6
    ISSN 1573-8221 ; 0007-4888 ; 0365-9615
    ISSN (online) 1573-8221
    ISSN 0007-4888 ; 0365-9615
    DOI 10.1007/s10517-018-3998-9
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  4. Article: Ékspressiia matriksnykh metalloproteinaz i ikh tkanevykh ingibitorov v sosudistom rusle golovnogo mozga pri khronicheskoĭ intoksikatsii tabachnym dymom v éksperimente.

    Chertok, V M / Zakharchuk, N V / Nevzorova, V A / Chertok, A G

    Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

    2018  Volume 118, Issue 6, Page(s) 65–71

    Abstract: Aim: To study the distribution of MMP-2 and MMP-9 and their inhibitors (TIMP-2 and TIMP-1 respectively) in the brain vascular bed of rats exposed to chronic tobacco smoke.: Material and methods: Localization and expression of MMP-2, MMP-9, TIMP-2 and ...

    Title translation The distribution of matrix metalloproteinases and their tissue inhibitors in the brain vascular bed exposed to chronic tobacco smoke.
    Abstract Aim: To study the distribution of MMP-2 and MMP-9 and their inhibitors (TIMP-2 and TIMP-1 respectively) in the brain vascular bed of rats exposed to chronic tobacco smoke.
    Material and methods: Localization and expression of MMP-2, MMP-9, TIMP-2 and TIMP-1 in the pial branches (I-V order vessels), intracerebral arteries and capillaries of rats exposed to tobacco smoke were studied for 36 weeks. The level of enzymatic activity was assessed by the relative quantity of enzymopositive arteries and amount of fragments per 1 mm
    Results: MMP-2 and TIMP-2 were found in all segments of the arterial course in control animals. In rats exposed to tobacco smoking, the expression of MMP-2 increased only in intracerebral arteries and capillaries while TIMP-2 level decreased. MMP-9 and TIMP-1 were noted only in single vessels, mainly small pial and intracerebral arteries, in intact animals. In rats exposed to tobacco smoke, MMP-9 expression significantly increased in all segments of the arterial course whereas the increase in TIMP-1 was observed mainly in large pial arteries.
    Conclusion: In physiological conditions, the dynamic balance between MMP-2 and TIMP-2 maintains basic tissue metabolism. Products of tobacco combustion are inductors of the inducible MMP-9 which promotes morphofunctional changes. The imbalance in MMP-9 - TIMP-1 system causes the degradation of extracellular matrix in different segments of the brain arterial course promoting the development of cerebral dysfunction.
    MeSH term(s) Animals ; Brain ; Capillaries ; Matrix Metalloproteinases ; Rats ; Smoke ; Nicotiana
    Chemical Substances Smoke ; Matrix Metalloproteinases (EC 3.4.24.-)
    Language Russian
    Publishing date 2018-07-21
    Publishing country Russia (Federation)
    Document type Journal Article
    ZDB-ID 1201462-x
    ISSN 2309-4729 ; 1997-7298 ; 0044-4588
    ISSN (online) 2309-4729
    ISSN 1997-7298 ; 0044-4588
    DOI 10.17116/jnevro20181186165
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  5. Article ; Online: Effects of Chronic Tobacco Smoking on the Distribution of Tachykinin Receptors in Rat Pial Arteries.

    Zakharchuk, N V / Chertok, V M / Nevzorova, V A / Gonchar, E Yu

    Bulletin of experimental biology and medicine

    2017  Volume 163, Issue 3, Page(s) 313–316

    Abstract: Pial arteries of different diameter were studied in intact rats and after 6-month modeling of chronic tobacco smoking in rats. Expression of tachykinin NK1 receptors in pial arteries was studied by biomicroscopy and immunohistochemical methods. Chronic ... ...

    Abstract Pial arteries of different diameter were studied in intact rats and after 6-month modeling of chronic tobacco smoking in rats. Expression of tachykinin NK1 receptors in pial arteries was studied by biomicroscopy and immunohistochemical methods. Chronic tobacco smoking induced considerable reorganizations of the arterial bed. The intensity of changes depended on the diameter of vessels. In small pial vessels that directly participate in the blood supply to the brain, pronounced vasodilatation and enhanced expression of NK
    MeSH term(s) Animals ; Cerebral Arteries/drug effects ; Cerebral Arteries/metabolism ; Cerebral Arteries/pathology ; Gene Expression ; Humans ; Immunohistochemistry ; Male ; Models, Animal ; Rats, Wistar ; Receptors, Tachykinin/genetics ; Receptors, Tachykinin/metabolism ; Substance P/biosynthesis ; Substance P/genetics ; Nicotiana/toxicity ; Tobacco Smoking/physiopathology ; Vascular Remodeling/drug effects ; Vasodilation/drug effects
    Chemical Substances Receptors, Tachykinin ; Substance P (33507-63-0)
    Language English
    Publishing date 2017-07-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390407-6
    ISSN 1573-8221 ; 0007-4888 ; 0365-9615
    ISSN (online) 1573-8221
    ISSN 0007-4888 ; 0365-9615
    DOI 10.1007/s10517-017-3792-0
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  6. Article: Vliyanie khronicheskogo tabakokureniya na tserebral'nuyu gemodinamiku.

    Zakharchuk, N V / Nevzorova, V A / Chertok, V M / Sarafanova, N S

    Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova

    2017  Volume 117, Issue 2, Page(s) 124–129

    Abstract: Aim: To study an effect of chronic smoking on cerebral hemodynamics and cerebrovascular reactivity in different segments of the arterial system of the brain in men.: Material and methods: Male patients enrolled in the study were divided into two ... ...

    Title translation Effects of chronic tabacco smoking on the cerebral blood flow.
    Abstract Aim: To study an effect of chronic smoking on cerebral hemodynamics and cerebrovascular reactivity in different segments of the arterial system of the brain in men.
    Material and methods: Male patients enrolled in the study were divided into two groups: controls (n=11) and smokers (n=24) with index 30.7 pack-year smoking history. Haemorheological parameters: viscosity of blood, aggregation of erythrocytes, hematocrit, fibrinogen were evaluated in both groups. Using carotid duplex ultrasound (MyLab 50 Esaote, Italy), intima-media thickness (IMT) of common carotid arteries (CCA) was measured. Parameters of cerebral hemodynamics were evaluated using transcranial Doppler ultrasound (Nicolet Companion Biomedikal, USA). Tests of the cerebrovascular reactivity were used to study arteries of three levels: common carotid arteries, middle cerebral arteries (MCA) and pial arteries.
    Results: An increase in erythrocytes, hemoglobin, hematocrit, viscosity of blood, aggregation of erythrocytes and fibrinogen was found in the group of smokers compared to the control group. There were an increase in IMT of CCA by more than 50% and a decrease in the mean flow velocity in CCA in smokers. Also smoking decreased MCA mean flow velocity, but this decrease was 2-3 times smaller than in the common carotid arteries. Vasoconstrictor reactions prevailed in MCA, as indicated by the increase in the peripheral vascular resistance index. An increase in vasospastic reactions in pial arteries in smokers was discovered. At the same time, the vasodilatation reaction was maintained or not significantly reduced in pial arteries.
    Conclusion: Chronic smoking is one of the significant factors causing changes in haemorheological parameters, damage of vascular wall, initiation of atherogenesis and disturbance of cerebral hemodynamics. The study of velocity characteristics and peripheral vascular resistance indices in the group of smokers revealed different reactions of different segments of the brain arterial system.
    MeSH term(s) Adult ; Blood Viscosity ; Brain/blood supply ; Carotid Intima-Media Thickness ; Cerebrovascular Circulation ; Erythrocyte Aggregation ; Fibrinogen/analysis ; Hemodynamics ; Hemoglobins/analysis ; Humans ; Male ; Middle Aged ; Nicotine/adverse effects ; Smoking/blood ; Smoking/physiopathology ; Ultrasonography, Doppler, Duplex ; Ultrasonography, Doppler, Transcranial ; Vascular Resistance ; Vasoconstriction
    Chemical Substances Hemoglobins ; Nicotine (6M3C89ZY6R) ; Fibrinogen (9001-32-5)
    Language Russian
    Publishing date 2017
    Publishing country Russia (Federation)
    Document type Journal Article
    ZDB-ID 1201462-x
    ISSN 2309-4729 ; 1997-7298 ; 0044-4588
    ISSN (online) 2309-4729
    ISSN 1997-7298 ; 0044-4588
    DOI 10.17116/jnevro201711721124-129
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  7. Article: Evaluation of heat tolerance in fruit crop varieties

    Doroshenko, T. N / Zakharchuk, N. V

    Russian agricultural sciences. 2014 July, v. 40, no. 4

    2014  

    Abstract: Various reactions of fruit crop species and varieties to the increase in air temperature are noted. The adaptation of fruit plants to overheating is connected with the functioning of protective mechanisms, which are particular for each species: the ... ...

    Abstract Various reactions of fruit crop species and varieties to the increase in air temperature are noted. The adaptation of fruit plants to overheating is connected with the functioning of protective mechanisms, which are particular for each species: the detoxication of ammonia formed during protein decomposition or protection of proteins from destruction (in the plum). The capability of plants to survive high temperatures depends on the genotypic properties of a variety, period of manifestation of the temperature stress factor, and duration of its action in separate years. A universal physiological and biological heat tolerance criterion in fruit crop varieties is the degree of change in protein concentration in plant leaves affected by the stress factor.
    Keywords air temperature ; ammonia ; crops ; cultivars ; heat tolerance ; leaves ; plums ; protein degradation ; proteins
    Language English
    Dates of publication 2014-07
    Size p. 257-260.
    Publishing place Springer-Verlag
    Document type Article
    ISSN 1068-3674
    DOI 10.3103/S1068367414040053
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Evaluation of Heat Tolerance in Fruit Crop Varieties

    Doroshenko, T. N. / Zakharchuk, N. V.

    Russian agricultural sciences

    2014  Volume 40, Issue 4, Page(s) 257

    Language English
    Document type Article
    ZDB-ID 1172157-1
    ISSN 0735-2700 ; 1068-3674
    Database Current Contents Nutrition, Environment, Agriculture

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    Z 2951: Show issues

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  9. Article: REACTION OF APPLE-TREE VARIETIES AND STOCKS ON CHANGE OF pH OF SOIL

    Doroshenko T. N. / Buzoverov A. V. / Ryazanova L. G. / Zakharchuk N. V.

    Polythematic Online Scientific Journal of Kuban State Agrarian University

    2015-02-28  

    Abstract: The researches are devoted to the determination of physiological parameters of grafted apple-trees joining with the level of their resistance to the change of soil рН. The experiments were carried out in the conditions of lysimetric experience with the ... ...

    Abstract The researches are devoted to the determination of physiological parameters of grafted apple-trees joining with the level of their resistance to the change of soil рН. The experiments were carried out in the conditions of lysimetric experience with the soils use characterizing by different value of рН. The scheme of experience included the following variants of soil medium reaction: neutral (рН 7,3), typical for black soils of plain part of the region (control); weak-acid (рН 6,2) existing in soils of foothill zone of the region (grey and brown forest); strong-acid (5.1) typical for brown forest soils; weak-alkaline(рН 8.3) occurring in black soils of south and sod-carbonate soils, strong-alkaline ( рН 8.8) typical for maternal types of many black soils. There were studied the varieties of apple-trees Prima, Florina and Renet Simirenko grafted on stocks M9 and MM106 and as well as corresponding the non-grafted stocks. The reaction of grafted apple-trees on change of рН of soil is specific and depends on adaptive possibilities of grafting components: varieties and stocks. At the stock M9 we can see the active growth of shoots and roots in the meaning of pH values from 5,1 (strong-acid reaction) to 7,3 (neutral). Plants MM106 prefer neutral (pH 7,3) and weak-alkaline (pH 8,3) soils. Independently from stocks for the variety Florina the most favorable weak-acid soils and the variety Prima – mainly neutral. The variety Renet Simirenko possesses enough high and stable functional activity in the conditions of wide range of the medium reaction: from very acid to alkaline one
    Document type Article
    ISSN 19904665
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  10. Article ; Online: Vasomotor activity of the aorta during chronic smoking modeling.

    Zakharchuk, N V / Nevzorova, V A / Gonchar, E Y / Agafonova, I G

    Bulletin of experimental biology and medicine

    2013  Volume 155, Issue 3, Page(s) 302–305

    Abstract: We studied vasomotor responses of aortic endothelium in a rat model of chronic smoking. It was found that long-term exposure to tobacco smoke (inhalation) impaired vasomotor function of the aortic endothelium leading to insufficient vasodilator activity ... ...

    Abstract We studied vasomotor responses of aortic endothelium in a rat model of chronic smoking. It was found that long-term exposure to tobacco smoke (inhalation) impaired vasomotor function of the aortic endothelium leading to insufficient vasodilator activity and enhanced vasoconstriction. After the cessation of inhalations, vasomotor disturbances were not only preserved, but also exacerbated because of increased pathological endothelium-independent vasoconstriction.
    MeSH term(s) Animals ; Aorta/physiopathology ; Disease Models, Animal ; Endothelial Cells/physiology ; Magnetic Resonance Imaging ; Pulmonary Disease, Chronic Obstructive/etiology ; Pulmonary Disease, Chronic Obstructive/physiopathology ; Rats ; Smoking/adverse effects ; Smoking/physiopathology ; Statistics, Nonparametric ; Vasoconstriction/physiology ; Vasomotor System/physiopathology
    Language English
    Publishing date 2013-08-27
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 390407-6
    ISSN 1573-8221 ; 0007-4888 ; 0365-9615
    ISSN (online) 1573-8221
    ISSN 0007-4888 ; 0365-9615
    DOI 10.1007/s10517-013-2138-9
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