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Zavodovskiy DO, Bulgakova NV, Sokolowska I, Prylutskyy YI, Ritter U, Gonchar OO, Kostyukov AI, Vlasenko OV, Butowska K, Borowik A, Piosik J, Maznychenko A. Water-soluble pristine C 60 fullerenes attenuate isometric muscle force reduction in a rat acute inflammatory pain model. BMC Musculoskelet Disord 2023; 24:606. [PMID: 37491190 PMCID: PMC10367279 DOI: 10.1186/s12891-023-06719-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 07/14/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Being a scavenger of free radicals, C60 fullerenes can influence on the physiological processes in skeletal muscles, however, the effect of such carbon nanoparticles on muscle contractility under acute muscle inflammation remains unclear. Thus, the aim of the study was to reveal the effect of the C60 fullerene aqueous solution (C60FAS) on the muscle contractile properties under acute inflammatory pain. METHODS To induce inflammation a 2.5% formalin solution was injected into the rat triceps surae (TS) muscle. High-frequency electrical stimulation has been used to induce tetanic muscle contraction. A linear motor under servo-control with embedded semi-conductor strain gauge resistors was used to measure the muscle tension. RESULTS In response to formalin administration, the strength of TS muscle contractions in untreated animals was recorded at 23% of control values, whereas the muscle tension in the C60FAS-treated rats reached 48%. Thus, the treated muscle could generate 2-fold more muscle strength than the muscle in untreated rats. CONCLUSIONS The attenuation of muscle contraction force reduction caused by preliminary injection of C60FAS is presumably associated with a decrease in the concentration of free radicals in the inflamed muscle tissue, which leads to a decrease in the intensity of nociceptive information transmission from the inflamed muscle to the CNS and thereby promotes the improvement of the functional state of the skeletal muscle.
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Affiliation(s)
| | | | - Inna Sokolowska
- Gdansk University of Physical Education and Sport, Kazimierza Gorskiego Str. 1, Gdansk 80- 336, Gdansk, Poland
| | - Yuriy I Prylutskyy
- ESC "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, Volodymyrska Str. 64, Kyiv, 01601, Ukraine
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer Str. 25, 98693, Ilmenau, Germany
| | - Olga O Gonchar
- Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kyiv, 01024, Ukraine
| | | | - Oleh V Vlasenko
- Laboratory of Experimental Neurophysiology, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
| | - Kamila Butowska
- Laboratory of Biophysics, Intercollegiate Faculty of Biotechnology UG-MUG, Abrahama 58, Gdansk, 80-307, Poland
| | - Agnieszka Borowik
- Laboratory of Biophysics, Intercollegiate Faculty of Biotechnology UG-MUG, Abrahama 58, Gdansk, 80-307, Poland
| | - Jacek Piosik
- Laboratory of Biophysics, Intercollegiate Faculty of Biotechnology UG-MUG, Abrahama 58, Gdansk, 80-307, Poland.
| | - Andriy Maznychenko
- Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kyiv, 01024, Ukraine.
- Gdansk University of Physical Education and Sport, Kazimierza Gorskiego Str. 1, Gdansk 80- 336, Gdansk, Poland.
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Dovgan IM, Savosko SI, Savosko AO, Melnyk NO, Kuraieva AV, Sokolowska IV, Bulgakova NV, Chaikovsky YB, Maznychenko AV. Experimental unilateral intracerebral hemorrhage induces delayed bilateral neurodegeneration of sciatic nerve fibres in rats. Acta Neurobiol Exp (Wars) 2023; 82:477-488. [PMID: 36748971 DOI: 10.55782/ane-2022-046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Pathological processes, such as inflammatory effects, oxidative stress, apoptosis and cytotoxicity of blood after an intracerebral hemorrhage (ICH), generally contribute to a secondary injury. One of the secondary ICH consequences in the nervous system may be delayed neurodegeneration of the peripheral nerves. Therefore, the aim of our study was to investigate possible structural changes in the sciatic nerve and changes in the conduction velocity via this nerve at different terms after experimental ICH in male Wistar rats. Intracerebral hemorrhage was provided by direct injection of autologous blood into the capsula interna. On the 10th day after ICH mean conduction velocity in sciatic nerve was 15% smaller compared to the control. On the 30th and 90th days after ICH, highly significant decreases in the conduction velocity by 62% and 60%, respectively in comparison with the control group of animals were observed. The data of morphometric analysis demonstrated significant decreases in the mean diameter and density of myelinated fibres at all examined terms after ICH. A number of the myelin sheaths were swollen and lost their regular laminations. Axoplasmic and myelin degenerations were the most frequent events in these nerve fibres; reductions of the diameter of the axis cylinders were also observed. In the contralateral nerve (related to the hemisphere with ICH), negative changes were greater, while the ipsilateral nerve was also subjected to those. Our data demonstrate that the consequences of unilateral ICH in the capsula interna induce bilateral negative changes in the peripheral nervous system of rats.
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Affiliation(s)
- Irina M Dovgan
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Serhii I Savosko
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Alona O Savosko
- Department of Cytology, Histology and Reproductive Medicine, Educational and Scientific Center "Institute of Biology and Medicine", Taras Shevchenko Kyiv National University, Kyiv, Ukraine
| | - Natalia O Melnyk
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Alona V Kuraieva
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Inna V Sokolowska
- Department of Physical Education, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Nataliya V Bulgakova
- Department of Movement Physiology, Bogomolets Institute of Physiology, Kyiv, Ukraine
| | - Yuri B Chaikovsky
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Andriy V Maznychenko
- Department of Physical Education, Gdansk University of Physical Education and Sport, Gdansk, Poland.,Department of Movement Physiology, Bogomolets Institute of Physiology, Kyiv, Ukraine;
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Govbakh I, Kyryk V, Ustymenko A, Rubtsov V, Tsupykov O, Bulgakova NV, Zavodovskiy DO, Sokolowska I, Maznychenko A. Stem Cell Therapy Enhances Motor Activity of Triceps Surae Muscle in Mice with Hereditary Peripheral Neuropathy. Int J Mol Sci 2021; 22:ijms222112026. [PMID: 34769453 PMCID: PMC8584487 DOI: 10.3390/ijms222112026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/27/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022] Open
Abstract
Impaired motor and sensory functions are the main features of Charcot-Marie-Tooth disease. Mesenchymal stem cell (MSCs) therapy is one of the possible treatments for this disease. It was assumed that MSCs therapy can improve the contractile properties of the triceps surae (TS) muscles in mice with hereditary peripheral neuropathy. Murine adipose-derived mesenchymal stromal cells (AD-MSCs) were obtained for transplantation into TS muscles of FVB-C-Tg(GFPU)5Nagy/J mice. Three months after AD-MSCs transplantation, animals were subjected to electrophysiological investigations. Parameters of TS muscle tension after intermittent high frequency electrical sciatic nerve stimulations were analyzed. It was found that force of TS muscle tension contraction in animals after AD-MSCs treatment was two-time higher than in untreated mice. Normalized values of force muscle contraction in different phases of electrical stimulation were 0.3 ± 0.01 vs. 0.18 ± 0.01 and 0.26 ± 0.03 vs. 0.13 ± 0.03 for treated and untreated animals, respectively. It is assumed that the two-fold increase in TS muscle strength was caused by stem cell therapy. Apparently, AD-MSCs therapy can promote nerve regeneration and partial restoration of muscle function, and thus can be a potential therapeutic agent for the treatment of peripheral neuropathies.
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Affiliation(s)
- Iryna Govbakh
- Department of General Practice-Family Medicine, Kharkiv Medical Academy of Postgraduate Education, 61000 Kharkiv, Ukraine;
| | - Vitalii Kyryk
- Cell and Tissue Technologies Department, State Institute of Genetic and Regenerative Medicine NAMS of Ukraine, 04114 Kyiv, Ukraine; (V.K.); (A.U.); (O.T.)
- Laboratory of Pathophysiology and Immunology, D. F. Chebotarev State Institute of Gerontology NAMS of Ukraine, 04114 Kyiv, Ukraine
| | - Alina Ustymenko
- Cell and Tissue Technologies Department, State Institute of Genetic and Regenerative Medicine NAMS of Ukraine, 04114 Kyiv, Ukraine; (V.K.); (A.U.); (O.T.)
- Laboratory of Pathophysiology and Immunology, D. F. Chebotarev State Institute of Gerontology NAMS of Ukraine, 04114 Kyiv, Ukraine
| | - Volodymyr Rubtsov
- Department of Cytology, Histology and Reproductive Medicine, Educational and Scientific Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 03127 Kyiv, Ukraine;
| | - Oleg Tsupykov
- Cell and Tissue Technologies Department, State Institute of Genetic and Regenerative Medicine NAMS of Ukraine, 04114 Kyiv, Ukraine; (V.K.); (A.U.); (O.T.)
- Department of Cytology, Bogomoletz Institute of Physiology NAS of Ukraine, 01024 Kyiv, Ukraine
| | - Nataliya V. Bulgakova
- Department of Movement Physiology, Bogomoletz Institute of Physiology NAS of Ukraine, 01024 Kyiv, Ukraine; (N.V.B.); (D.O.Z.)
| | - Danylo O. Zavodovskiy
- Department of Movement Physiology, Bogomoletz Institute of Physiology NAS of Ukraine, 01024 Kyiv, Ukraine; (N.V.B.); (D.O.Z.)
| | - Inna Sokolowska
- Department of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Andriy Maznychenko
- Department of Movement Physiology, Bogomoletz Institute of Physiology NAS of Ukraine, 01024 Kyiv, Ukraine; (N.V.B.); (D.O.Z.)
- Department of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
- Correspondence: ; Tel.: +38-044-256-24-12
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Maznychenko AV, Mankivska OP, Sokolowska (Vereshchaka) IV, Kopyak BS, Tomiak T, Bulgakova NV, Gonchar OO, Prylutskyy YI, Ritter U, Mishchenko IV, Kostyukov AI. C60 fullerenes increase the intensity of rotational movements in non-anesthetized hemiparkinsonic rats. Acta Neurobiol Exp (Wars) 2020. [DOI: 10.21307/ane-2020-003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Maznychenko AV, Mankivska OP, Sokolowska Vereshchaka IV, Kopyak BS, Tomiak T, Bulgakova NV, Gonchar OO, Prylutskyy YI, Ritter U, Mishchenko IV, Kostyukov AI. C60 fullerenes increase the intensity of rotational movements in non‑anesthetized hemiparkinsonic rats. Acta Neurobiol Exp (Wars) 2020; 80:32-37. [PMID: 32214272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effect of C60 fullerene aqueous colloid solution (C60FAS) on the intensity of long‑lasting (persisting for one hour) rotational movements in non‑anesthetized rats was investigated. For this purpose, an experimental hemiparkinsonic animal model was used in the study. Rotational movements in hemiparkinsonic animals were initiated by the intraperitoneal administration of the dopamine receptor agonist apomorphine. It was shown that a preliminary injection of C60FAS (a substance with powerful antioxidant properties) in hemiparkinsonic rats induced distinct changes in animal motor behavior. It was revealed that fullerene‑pretreated animals, in comparison with non‑pretreated or vehicle‑pretreated rats, rotated for 1 h at an approximately identical speed until the end of the experiment, whereas the rotation speed of control rats gradually decreased to 20-30% of the initial value. One can assume that the observed changes in the movement dynamics of the hemiparkinsonic rats after C60FAS pretreatment presumably can be induced by the influence of C60FAS on the dopaminergic system, although the isolated potentiation of the action of apomorphine C60FAS cannot be excluded. Nevertheless, earlier data on the action of C60FAS on muscle dynamics has suggested that C60FAS can activate a protective action of the antioxidant system in response to long‑lasting muscular activity and that the antioxidant system in turn may directly decrease fatigue‑relate d changes during long‑lasting muscular activity.
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Affiliation(s)
- Andriy V Maznychenko
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Kyiv, Ukraine,
- Department of Physical Education, Gdansk University of Physical Education and Sport, Gdańsk, Poland
| | - Olena P Mankivska
- Department of Cytology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | | | - Bohdan S Kopyak
- Department of Blood Circulation, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Tomasz Tomiak
- Department of Physical Education, Gdansk University of Physical Education and Sport, Gdańsk, Poland
| | - Nataliya V Bulgakova
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Olga O Gonchar
- Department of Hypoxic States Investigation, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Yuriy I Prylutskyy
- Taras Shevchenko National University of Kyiv, ESC "Institute of Biology and Medicine", Kyiv, Ukraine
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Ilmenau, Germany
| | | | - Alexander I Kostyukov
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
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Vereshchaka IV, Bulgakova NV, Maznychenko AV, Gonchar OO, Prylutskyy YI, Ritter U, Moska W, Tomiak T, Nozdrenko DM, Mishchenko IV, Kostyukov AI. C 60 Fullerenes Diminish Muscle Fatigue in Rats Comparable to N-acetylcysteine or β-Alanine. Front Physiol 2018; 9:517. [PMID: 29867560 PMCID: PMC5962757 DOI: 10.3389/fphys.2018.00517] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/20/2018] [Indexed: 12/12/2022] Open
Abstract
The aim of this study is to detect the effects of C60 fullerenes, which possess pronounced antioxidant properties, in comparison with the actions of the known exogenous antioxidants N-acetylcysteine (NAC) and β-Alanine in terms of exercise tolerance and contractile property changes of the m. triceps surae (TS) during development of the muscle fatigue in rats. The electrical stimulation of the TS muscle during four 30 min series in control rats led to total reduction of the muscle contraction force. Furthermore, the effects of prior intraperitoneal (i.p.) or oral C60FAS application and preliminary i.p. injection of NAC or β-Alanine on muscle contraction force under fatigue development conditions is studied. In contrast to control rats, animals with C60FAS, NAC, or β-Alanine administration could maintain a constant level of muscle effort over five stimulation series. The accumulation of secondary products and changes in antioxidant levels in the muscle tissues were also determined after the fatigue tests. The increased levels of lactic acid, thiobarbituric acid reactive substances and H2O2 after stimulation were statistically significant with respect to intact muscles. In the working muscle, there was a significant (p < 0.05) increase in the activity of endogenous antioxidants: reduced glutathione, catalase, glutathione peroxidase, and superoxide dismutase. Treated animal groups showed a decrease in endogenous antioxidant activity relative to the fatigue-induced animals (P < 0.05). Oral C60FAS administration clearly demonstrated an action on skeletal muscle fatigue development similar to the effects of i.p. injections of the exogenous antioxidants NAC or β-Alanine. This creates opportunities to oral use of C60FAS as a potential therapeutic agent. Due to the membranotropic activity of C60 fullerenes, non-toxic C60FAS has a more pronounced effect on the prooxidant-antioxidant homeostasis of muscle tissues in rats.
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Affiliation(s)
- Inna V. Vereshchaka
- The Unit of the Theory of Physical Education, The Chair of Physical Education, Gdansk University of Physical Education and SportGdańsk, Poland
| | - Nataliya V. Bulgakova
- Department of Movement Physiology, Bogomoletz Institute of Physiology, National Academy of Sciences, Kyiv, Ukraine
| | - Andriy V. Maznychenko
- Department of Movement Physiology, Bogomoletz Institute of Physiology, National Academy of Sciences, Kyiv, Ukraine
| | - Olga O. Gonchar
- Department of Hypoxic States Investigation, Bogomoletz Institute of Physiology, National Academy of Sciences, Kyiv, Ukraine
| | - Yuriy I. Prylutskyy
- ESC “Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Ilmenau, Germany
| | - Waldemar Moska
- The Unit of the Theory of Physical Education, The Chair of Physical Education, Gdansk University of Physical Education and SportGdańsk, Poland
| | - Tomasz Tomiak
- The Unit of the Theory of Physical Education, The Chair of Physical Education, Gdansk University of Physical Education and SportGdańsk, Poland
| | - Dmytro M. Nozdrenko
- ESC “Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | | | - Alexander I. Kostyukov
- Department of Movement Physiology, Bogomoletz Institute of Physiology, National Academy of Sciences, Kyiv, Ukraine
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Prylutskyy YI, Vereshchaka IV, Maznychenko AV, Bulgakova NV, Gonchar OO, Kyzyma OA, Ritter U, Scharff P, Tomiak T, Nozdrenko DM, Mishchenko IV, Kostyukov AI. C 60 fullerene as promising therapeutic agent for correcting and preventing skeletal muscle fatigue. J Nanobiotechnology 2017; 15:8. [PMID: 28086894 PMCID: PMC5237293 DOI: 10.1186/s12951-016-0246-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 12/30/2016] [Indexed: 12/26/2022] Open
Abstract
Background Bioactive soluble carbon nanostructures, such as the C60 fullerene can bond with up to six electrons, thus serving by a powerful scavenger of reactive oxygen species similarly to many natural antioxidants, widely used to decrease the muscle fatigue effects. The aim of the study is to define action of the pristine C60 fullerene aqueous colloid solution (C60FAS), on the post-fatigue recovering of m. triceps surae in anaesthetized rats. Results During fatigue development, we observed decrease in the muscle effort level before C60FAS administration. After the application of C60FAS, a slower effort decrease, followed by the prolonged retention of a certain level, was recorded. An analysis of the metabolic process changes accompanying muscle fatigue showed an increase in the oxidative stress markers H2O2 (hydrogen peroxide) and TBARS (thiobarbituric acid reactive substances) in relation to the intact muscles. After C60FAS administration, the TBARS content and H2O2 level were decreased. The endogenous antioxidant system demonstrated a similar effect because the GSH (reduced glutathione) in the muscles and the CAT (catalase) enzyme activity were increased during fatigue. Conclusions C60FAS leads to reduction in the recovery time of the muscle contraction force and to increase in the time of active muscle functioning before appearance of steady fatigue effects. Therefore, it is possible that C60FAS affects the prooxidant-antioxidant muscle tissue homeostasis, subsequently increasing muscle endurance.
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Affiliation(s)
- Yurij I Prylutskyy
- Department of Biophysics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 60, Kiev, 01601, Ukraine
| | - Inna V Vereshchaka
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kiev, 01024, Ukraine
| | - Andriy V Maznychenko
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kiev, 01024, Ukraine.
| | - Nataliya V Bulgakova
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kiev, 01024, Ukraine
| | - Olga O Gonchar
- Department of Hypoxic States Investigation, Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kiev, 01024, Ukraine
| | - Olena A Kyzyma
- Department of Biophysics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 60, Kiev, 01601, Ukraine.,Joint Institute for Nuclear Research, Joliot-Curie Str. 6, Dubna, Moscow Region, Russia
| | - Uwe Ritter
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer Str. 25, 98693, Ilmenau, Germany
| | - Peter Scharff
- Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Weimarer Str. 25, 98693, Ilmenau, Germany
| | - Tomasz Tomiak
- University of Physical Education and Sport, Kazimierza Górskiego Str.1, 80-336, Gdansk, Poland
| | - Dmytro M Nozdrenko
- Department of Biophysics, Taras Shevchenko National University of Kyiv, Volodymyrska Str. 60, Kiev, 01601, Ukraine
| | - Iryna V Mishchenko
- Lesia Ukrainka Eastern European National University, Volya Avenue 13, Lutsk, 43025, Ukraine
| | - Alexander I Kostyukov
- Department of Movement Physiology, Bogomoletz Institute of Physiology, Bogomoletz Str. 4, Kiev, 01024, Ukraine
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Vereshchaka IV, Bulgakova NV, Kornieiev VV, Chaikovskii KA, Maznychenko AV. MODULATION OF THE MONOSYNAPTIC REFLEX POTENTIALSIN THE DECEREBRATED RATS UNDER THE INFLUENCE OF HYDROXYTRYPTOPHAN. ACTA ACUST UNITED AC 2016. [PMID: 29537224 DOI: 10.15407/fz62.02.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We studied the serotonin effect on monosynaptic reflex potentials (MSR) of spinal motorneurons in the decerebrated rats in control and after intraperitoneal administration of serotonin precursor – 5-Hydroxytryptophan (5-HTP). MSR of motorneurons in the lumbar spinal cord were registered using electrical stimulation of dorsal root of the 5th lumbar section. During stimulation physiological saline or 5-hydroxytryptophan was injected intraperitoneally. In comparison with average amplitude of the control MSR there were registered significant increase in amplitudes of the MSR (169% and +172%, P <0,001) in animals with injection 5-HTP. These data suggest that serotonin release after 5-HTP administration leads to activation of motorneurons in the lumbar spinal cord. The mechanism of this activation may be related to the weakening of the inhibitory control of interneurons in the transmission pathways of the excitatory influences from muscle afferent to motorneurons and to the postural (antigravity) reflex reactions which necessary for the initiation of locomotion.
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Kostyukov AI, Lytvynenko SV, Bulgakova NV, Gorkovenko AV. Subthreshold activation of spinal motoneurones in the stretch reflex: experimental data and modeling. Biol Cybern 2009; 100:307-318. [PMID: 19326142 DOI: 10.1007/s00422-009-0303-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Accepted: 03/12/2009] [Indexed: 05/27/2023]
Abstract
Responses of gastrocnemius-soleus motoneurones to stretches of the homonymous muscles were recorded intrasomatically in decerebrate cats; changes of membrane potential (MP) were evoked by smoothed trapezoid stretches of the muscles. Amplitudes of separate excitatory postsynaptic potentials (EPSPs) were defined via differences between values of MP at the end and beginning of the positive derivative waves, which were also used as basic elements in the model of the excitatory postsynaptic currents (EPSCs). EPSCs were assumed to be transformed into EPSPs by low-pass filtering properties of the somatic membrane; parameters of the filtering were firstly defined from analysis of Ia EPSP in the same cell and then were applied in model P ( m0). The model showed unsatisfactory quality in tracking slow components of MP; to overcome the disadvantage there was proposed model P ( m1) based on addition to P ( m0) the difference between two low-pass filtered signals MP and P ( m0) (the cutoff frequency 10 or 20 Hz). An overestimation of EPSPs' amplitudes was corrected in model P ( m2). The mismatch in tracking slow changes of MP was assumed to be connected with summation of a great number of low-amplitude EPSPs generated at distal dendrites; information about waveform of separate EPSPs could disappear in this process. One can speculate that slow components of membrane depolarization at least partly are linked with the persistent inward currents in dendrites; variable and, sometimes, too fast decays in EPSPs seem to reflect inhibitory synaptic influences.
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Affiliation(s)
- A I Kostyukov
- Department of Movement Physiology, A.A. Bogomoletz Institute of Physiology, National Academy of Sciences, Kiev, Ukraine.
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Yakhnitsa VA, Pilyavskii AI, Limansky YP, Bulgakova NV. Modulation of the activity of midbrain central gray substance neurons by calcium channel agonists and antagonists in vitro. Neuroscience 1996; 70:159-67. [PMID: 8848121 DOI: 10.1016/0306-4522(95)00310-f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Changes in the background impulse activity of midbrain central gray substance neurons have been studied on slice preparations from the rat midbrain upon application of calcium-free solution, an activator of calcium channels, BAY-K 8644 (10 nM), organic (verapamil, 40 microM; D600, 10 microM; nifedipine, 1-10 microM; amiloride, 1 microM) and inorganic (Co2+, 1.5 mM) calcium channel blockers. Besides BAY-K 8644, all the substances inhibited most of the neurons studied. Verapamil, BAY-K 8644 and Co2+ also revealed facilitatory effects. Facilitatory action of BAY-K was most effective in silent neurons and in those previously inhibited by amiloride. Latent period values of inhibition in calcium-free solution and upon application of organic and inorganic blockers have the following sequence: D600 > amiloride > verapamil > Co2+ > nifedipine > calcium-free solution. Maximum rise time had the following order: amiloride > D600 > nifedipine > verapamil > Co2+ > calcium-free solution. Complete suppression of the neuronal activity induced by amiloride lasted twice as long as that induced by calcium-free solution, Co2+ and nifedipine, and six times as long as verapamil-induced suppression. Preliminary application of calcium channel blockers reduced facilitatory and increased inhibitory effects of serotonin and substance P. Data obtained are discussed with the supposition in mind that inhibition of the function of calcium channels in central gray substance neurons could be one of the mechanisms underlying the analgesic effect of a series of neurotropic agents after their introduction into this structure.
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Affiliation(s)
- V A Yakhnitsa
- Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kiev
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Piliavskiĭ AI, Iakhnitsa IA, Pleten' SN, Bulgakova NV. [Experimental spinal cord contusion. I. An assessment of the state of the conductivity of different funiculi]. Zh Vopr Neirokhir Im N N Burdenko 1991:27-30. [PMID: 1667841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Experiments were conducted on albino rats to study the changes of the amplitude and latency of maxima tract and synaptic components of the dorsal surface potential before and after spinal cord injury at the level of Th9. Dorsal surface potentials were recorded from L4 after stimulation in C2. The amplitude of tract and synaptic component maxima of the short latency potential were found to be considerably reduced after the injury. The latency of both components increased after the injury. The changes of the amplitude or latency of potentials evoked from different stimulated points of the cord were analysed. The possible mechanism of the revealed changes is discussed.
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Limanskiĭ IP, Tamarova ZA, Piliavskiĭ AI, Oksamitnyĭ VN, Khasabov SG, Bulgakova NV. [The effect of creatine phosphate on reflex transmission in the normal spinal cord and under hypoxic conditions]. Zh Vopr Neirokhir Im N N Burdenko 1990:25-8. [PMID: 2173305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The effect of phosphocreatine on reflex transmission in the spinal cord was studied in rats in vivo and in vitro. Low concentrations (10(-8)-10(-6) M) of phosphocreatine facilitated while high concentrations (10(-4)-10(-3) M) inhibited the amplitude of mono- and polysynaptic reflexes. It was found that phosphocreatine decreases the inhibiting action of hypoxia on test responses and accelerates restoration of the reflex transmission in the spinal cord.
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Piliavskiĭ AI, Bulgakova NV, Iakhnitsa IA, Pavlasek I. [Changes in the postsynaptic responses of spinal cord motor neurons against a background of rhythmic stimulation of the locus coeruleus]. Neirofiziologiia 1982; 14:51-59. [PMID: 6278336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Influences of locus coeruleus rhythmical stimulation on the postsynaptic reactions of spinal motoneurons were studied in chloralose anesthetized cats. IPSPs evoked by flexor reflex afferent (FRA) stimulation were inhibited, but EPSPs evoked by FRA and PSPs evoked by low-threshold muscle afferents stimulation were unchanged under these conditions. The inhibition of IPSPs disappeared in reserpine-pretreated animals. Both IPSPs and EPSPs evoked by FRA stimulation were diminished also during rhythmical stimulation of nucleus reticularis pontis oralis. However this effect was not of monoaminergic nature because it was present in reserpine-pretreated animals.
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