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Kozin S, Kravtsov A, Ivashchenko L, Dotsenko V, Vasilyeva L, Vasilyev A, Tekutskaya E, Aksenov N, Baryshev M, Dorohova A, Fedulova L, Dzhimak S. Study of the Magnesium Comenate Structure, Its Neuroprotective and Stress-Protective Activity. Int J Mol Sci 2023; 24:ijms24098046. [PMID: 37175753 PMCID: PMC10178379 DOI: 10.3390/ijms24098046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
The crystal structure and the biological activity of a new coordination compound of magnesium ions with comenic acid, magnesium comenate, was characterized and studied. Quantitative and qualitative analysis of the compound was investigated in detail using elemental X-ray fluorescent analysis, thermal analysis, IR-Fourier spectrometry, UV spectroscopy, NMR spectroscopy, and X-ray diffraction analysis. Based on experimental analytical data, the empirical formula of magnesium comenate [Mg(HCom)2(H2O)6]·2H2O was established. This complex compound crystallizes with eight water molecules, six of which are the hydration shell of the Mg2+ cation, and two more molecules bind the [Mg(H2O)6]2+ aquacation with ionized ligand molecules by intermolecular hydrogen bonds. The packing of molecules in the crystal lattice is stabilized by a branched system of hydrogen bonds with the participation of solvate water molecules and oxygen atoms of various functional groups of ionized ligand molecules. With regard to the biological activity of magnesium comenate, a neuroprotective, stress-protective, and antioxidant effect was established in in vitro and in vivo models. In in vitro experiments, magnesium comenate protected cerebellar neurons from the toxic effects of glutamate and contributed to the preservation of neurite growth parameters under oxidative stress caused by hydrogen peroxide. In animal studies, magnesium comenate had a stress-protective and antioxidant effect in models of immobilization-cold stress. Oral administration of magnesium comenate at a dose of 2 mg/kg of animal body weight for 3 days before stress exposure and for 3 days during the stress period led to a decrease in oxidative damage and normalization of the antioxidant system of brain tissues against the background of induced stress. The obtained results indicate the advisability of further studies of magnesium comenate as a compound potentially applicable in medicine for the pharmacological correction of conditions associated with oxidative and excitotoxic damage to nerve cells.
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Affiliation(s)
- Stanislav Kozin
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Federal Research Center the Southern Scientific Center, Russian Academy of Sciences, 344006 Rostov-on-Don, Russia
- Laboratory of Technologies for the Production of Physiologically Active Substances, Kuban State Technological University, 350072 Krasnodar, Russia
| | - Alexandr Kravtsov
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Federal Research Center the Southern Scientific Center, Russian Academy of Sciences, 344006 Rostov-on-Don, Russia
- Laboratory of Technologies for the Production of Physiologically Active Substances, Kuban State Technological University, 350072 Krasnodar, Russia
| | - Lev Ivashchenko
- Laboratory of Technologies for the Production of Physiologically Active Substances, Kuban State Technological University, 350072 Krasnodar, Russia
- Faculty of Chemistry and High Technologies, Kuban State University, 350040 Krasnodar, Russia
| | - Victor Dotsenko
- Faculty of Chemistry and High Technologies, Kuban State University, 350040 Krasnodar, Russia
| | - Lada Vasilyeva
- Faculty of Chemistry and High Technologies, Kuban State University, 350040 Krasnodar, Russia
| | - Alexander Vasilyev
- Faculty of Chemistry and High Technologies, Kuban State University, 350040 Krasnodar, Russia
| | - Elena Tekutskaya
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
| | - Nicolai Aksenov
- Faculty of Chemistry and Pharmacy, North Caucasus Federal University, 355017 Stavropol, Russia
| | - Mikhail Baryshev
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Federal Research Center the Southern Scientific Center, Russian Academy of Sciences, 344006 Rostov-on-Don, Russia
| | - Anna Dorohova
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Federal Research Center the Southern Scientific Center, Russian Academy of Sciences, 344006 Rostov-on-Don, Russia
| | - Lilia Fedulova
- Experimental Clinic-Laboratory of Biologically Active Substances of Animal Origin, The V. M. Gorbatov Federal Research Center for Food Systems, Russian Academy of Sciences, 109316 Moscow, Russia
| | - Stepan Dzhimak
- Physics and Technology Faculty, Kuban State University, 350040 Krasnodar, Russia
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Federal Research Center the Southern Scientific Center, Russian Academy of Sciences, 344006 Rostov-on-Don, Russia
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Kravtsov A, Kozin S, Basov A, Butina E, Baryshev M, Malyshko V, Moiseev A, Elkina A, Dzhimak S. Reduction of Deuterium Level Supports Resistance of Neurons to Glucose Deprivation and Hypoxia: Study in Cultures of Neurons and on Animals. Molecules 2021; 27:243. [PMID: 35011474 PMCID: PMC8746303 DOI: 10.3390/molecules27010243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/29/2021] [Accepted: 12/29/2021] [Indexed: 11/17/2022] Open
Abstract
The effect of a reduced deuterium (D) content in the incubation medium on the survival of cultured neurons in vitro and under glucose deprivation was studied. In addition, we studied the effect of a decrease in the deuterium content in the rat brain on oxidative processes in the nervous tissue, its antioxidant protection, and training of rats in the T-shaped maze test under hypoxic conditions. For experiments with cultures of neurons, 7-8-day cultures of cerebellar neurons were used. Determination of the rate of neuronal death in cultures was carried out using propidium iodide. Acute hypoxia with hypercapnia was simulated in rats by placing them in sealed vessels with a capacity of 1 L. The effect on oxidative processes in brain tissues was assessed by changes in the level of free radical oxidation and malondialdehyde. The effect on the antioxidant system of the brain was assessed by the activity of catalase. The study in the T-maze was carried out in accordance with the generally accepted methodology, the skill of alternating right-sided and left-sided loops on positive reinforcement was developed. This work has shown that a decrease in the deuterium content in the incubation medium to a level of -357‱ has a neuroprotective effect, increasing the survival rate of cultured neurons under glucose deprivation. When exposed to hypoxia, a preliminary decrease in the deuterium content in the rat brain to -261‱ prevents the development of oxidative stress in their nervous tissue and preserves the learning ability of animals in the T-shaped maze test at the level of the control group. A similar protective effect during the modification of the 2H/1H internal environment of the body by the consumption of DDW can potentially be used for the prevention of pathological conditions associated with the development of oxidative stress with damage to the central nervous system.
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Affiliation(s)
- Alexandr Kravtsov
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
| | - Stanislav Kozin
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
| | - Alexandr Basov
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- Department of Fundamental and Clinical Biochemistry, Kuban State Medical University, 350063 Krasnodar, Russia
| | - Elena Butina
- Department of Technology of Fats, Cosmetics, Commodity Science, Processes and Devices, Kuban State Technological University, 350072 Krasnodar, Russia;
| | - Mikhail Baryshev
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
- Department of Technology of Fats, Cosmetics, Commodity Science, Processes and Devices, Kuban State Technological University, 350072 Krasnodar, Russia;
| | - Vadim Malyshko
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
- Department of Fundamental and Clinical Biochemistry, Kuban State Medical University, 350063 Krasnodar, Russia
| | - Arkady Moiseev
- Department of Organization and Support of Scientific Activities, Kuban State Agrarian University, 350044 Krasnodar, Russia;
| | - Anna Elkina
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
- Department of Physics, K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), 109004 Moscow, Russia
| | - Stepan Dzhimak
- Department of Radiophysics and Nanothechnology, Physics Faculty, Kuban State University, 350040 Krasnodar, Russia; (A.K.); (S.K.); (A.B.); (M.B.); (A.E.)
- South Scientific Center of the Russian Academy of Sciences, Laboratory of Problems of Stable Isotope Spreading in Living Systems, 344006 Rostov-on-Don, Russia;
- The V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences, Experimental Clinic—Laboratory of Biologically Active Substances of Animal Origin, 109316 Moscow, Russia
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Petriev I, Pushankina P, Shostak N, Baryshev M. Gas-Transport Characteristics of PdCu–Nb–PdCu Membranes Modified with Nanostructured Palladium Coating. Int J Mol Sci 2021; 23:ijms23010228. [PMID: 35008654 PMCID: PMC8745148 DOI: 10.3390/ijms23010228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/18/2021] [Accepted: 12/24/2021] [Indexed: 12/01/2022] Open
Abstract
A method for obtaining composite gas-diffusion PdCu–Nb–PdCu membranes modified with a nanostructured crystalline coating was developed to increase the performance of Nb-based membranes. A modifying functional layer with a controlled size and composition was synthesized by electrochemical deposition, which made it possible to determine a certain geometric shape for palladium nanocrystallites. Developed PdCu–Nb–PdCu membranes have demonstrated flux values up to 0.232 mmol s−1 m−2 in the processes of diffusion purification of hydrogen at 400 °C. A very significant difference in the hydrogen fluxes through the modified and non-modified composite PdCu–Nb–PdCu membranes reached 1.73 times at the lower threshold temperature of 300 °C. Cu doping of protective layer did not affect the selective properties of the membranes, which was confirmed by the obtained high selectivity values up to 1323, and made it possible to reduce the noble metal content. The research data indicate that the modification of the membrane surface significantly accelerates the hydrogen transfer process at sufficiently low temperatures due to the acceleration of dissociative–associative processes on the surface. The reported approach demonstrates new possibilities for creating productive and cost-efficient membranes based on niobium.
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Affiliation(s)
- Iliya Petriev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Southern Scientific Centre of the RAS, 344000 Rostov-on-Don, Russia
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
- Correspondence:
| | - Polina Pushankina
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| | - Nikita Shostak
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| | - Mikhail Baryshev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Southern Scientific Centre of the RAS, 344000 Rostov-on-Don, Russia
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
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