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Shadyro O, Samovich S, Edimecheva I, Novitsky R, Khrutskin V, Ihnatovich L, Boreko E, Dubovik B. Potential role of free-radical processes in biomolecules damage during COVID-19 and ways of their regulation. Free Radic Res 2021; 55:745-756. [PMID: 34085882 DOI: 10.1080/10715762.2021.1938024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
It has been shown that the development of coronavirus infection (COVID-19), especially in severe cases, is accompanied by hypoxia as a result of several pathological processes: alveolar blood supply disorders, hemolysis, COVID-associated coagulopathy. Under these conditions, the level of reactive oxygen species is increased and it is more likely that free-radical damage to biomolecules is caused by the process of free-radical fragmentation than oxidation. In contrast to the oxidation process, free-radical fragmentation reactions are more effectively inhibited by oxidizing agents than reducing agents. Therefore, the use of substances possessing both reducing and oxidizing properties, such as natural and synthetic quinones, bioflavonoids, curcuminoids, should reduce the probability of biomolecule destruction by oxidation as well as free-radical fragmentation processes.HighlightsCOVID-19 is accompanied by the iron release from the heme and «silent» hypoxiaROS initiate fragmentation reactions of biomolecules under conditions of hypoxiaBlocking of fragmentation process by oxidizers may lead to mitigation of COVID-19.
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Affiliation(s)
- Oleg Shadyro
- Department of Chemistry, Belarusian State University, Minsk, Republic of Belarus.,Research Institute for Physical and Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Svetlana Samovich
- Department of Chemistry, Belarusian State University, Minsk, Republic of Belarus.,Research Institute for Physical and Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Irina Edimecheva
- Research Institute for Physical and Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Roman Novitsky
- Department of Chemistry, Belarusian State University, Minsk, Republic of Belarus
| | - Valery Khrutskin
- Research Institute for Physical and Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Lana Ihnatovich
- Department of Chemistry, Belarusian State University, Minsk, Republic of Belarus.,Research Institute for Physical and Chemical Problems, Belarusian State University, Minsk, Republic of Belarus
| | - Eugene Boreko
- The Republican Research and Practical Center for Epidemiology and Microbiology, Minsk, Republic of Belarus
| | - Boris Dubovik
- Department of Pharmacology, Belarusian State Medical University, Minsk, Belarus
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Nepachalovich PS, Shadyro OI, Bekish AV, Shmanai VV. The influence of H/D kinetic isotope effect on radiation-induced transformations of hydroxyl-containing compounds in aqueous solutions. Free Radic Res 2020; 54:732-744. [PMID: 33070642 DOI: 10.1080/10715762.2020.1838502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Vicinal diols and its derivatives can be exploited as model compounds for the investigation of radiation-induced free-radical transformations of hydroxyl-containing biomolecules such as carbohydrates, phospholipids, ribonucleotides, amino acids, and peptides. In this paper, for the first time, the prospects of isotope reinforcement approach in inhibiting free-radical transformations of hydroxyl-containing compounds in aqueous solutions are investigated on the example of radiolysis of 1,2-propanediol and 1,2-propanediol-2-d1 aqueous solutions. At an absorbed dose rate of 0.110 ± 0.003 Gy·s-1 a profound kinetic isotope effect (KIE) is observed for the non-branched chain formation of acetone, which is a final dehydration product of predominant carbon-centred radicals CH3·C(OH)CH2OH. In 0.1 and 1 M deaerated solutions at pH 7.00 ± 0.01, the values of KIE are 8.9 ± 1.7 and 15.3 ± 3.1, respectively. A rationale for the fact that a strong KIE takes place only in the case of chain processes, which may occur during free-radical transformations of vicinal diols, is also provided herein based on the results of 2-propanol and 2-propanol-2-d1 indirect radiolysis. Lastly, the lack of KIE is shown in the case of 2-butanone formation from 2,3-butanediol or 2,3-butanediol-2,3-d2. This indicates that the type (primary, secondary) of the β-carbonyl radicals formed as a result of CH3·C(OH)CH(OH)R (R = H, CH3) dehydration determines the manifestation of the effect.
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Affiliation(s)
- Palina S Nepachalovich
- Research Institute for Physical Chemical Problems, Belarusian State University, Minsk, Belarus
| | - Oleg I Shadyro
- Research Institute for Physical Chemical Problems, Belarusian State University, Minsk, Belarus.,Department of Chemistry, Belarusian State University, Minsk, Belarus
| | - Andrei V Bekish
- Institute of Physical Organic Chemistry, National Academy of Science, Minsk, Belarus
| | - Vadim V Shmanai
- Institute of Physical Organic Chemistry, National Academy of Science, Minsk, Belarus
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Shadyro O, Samovich S, Edimecheva I. Free-radical and biochemical reactions involving polar part of glycerophospholipids. Free Radic Biol Med 2019; 144:6-15. [PMID: 30849488 DOI: 10.1016/j.freeradbiomed.2019.02.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/20/2019] [Accepted: 02/28/2019] [Indexed: 12/18/2022]
Abstract
The review summarizes and critically discusses data on biochemical and free-radical transformations of glycerophospholipids. The results presented therein demonstrate that hydroxyl-containing glycerophospholipids, such as cardiolipin, lyso-lipids and others, can undergo fragmentation upon interaction with radical agents forming the biologically active products. Hydrolysis of glycerophospholipids catalyzed by different phospholipases was shown to yield compounds, which can be involved in the free-radical fragmentation leading to significant changes in structures of original lipids.
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Affiliation(s)
- Oleg Shadyro
- Department of Chemistry of the Belarusian State University, Nezavisimosti av., 4, 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, Leningradskaya st., 14, 220050, Minsk, Belarus.
| | - Svetlana Samovich
- Department of Chemistry of the Belarusian State University, Nezavisimosti av., 4, 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, Leningradskaya st., 14, 220050, Minsk, Belarus
| | - Irina Edimecheva
- Research Institute for Physical and Chemical Problems of the Belarusian State University, Leningradskaya st., 14, 220050, Minsk, Belarus
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Shadyro O, Lisovskaya A. ROS-induced lipid transformations without oxygen participation. Chem Phys Lipids 2019; 221:176-183. [DOI: 10.1016/j.chemphyslip.2019.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/18/2019] [Accepted: 03/24/2019] [Indexed: 12/24/2022]
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Samovich SN, Sladkova AA, Sverdlov RL, Edimecheva IP, Shadyro OI. Effects of quinones and nitroazoles on free-radical fragmentation of glycerol-1-phosphate and 1,2-dimyristoyl-glycero-3-phosphatidyl-glycerol. Chem Phys Lipids 2019; 222:8-14. [PMID: 31005671 DOI: 10.1016/j.chemphyslip.2019.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 04/01/2019] [Accepted: 04/17/2019] [Indexed: 01/22/2023]
Abstract
Effects of quinones and azoles on the formation of steady-state radiolysis products in aqueous solutions of glycerol-1-phosphate and aqueous dispersions of 1,2-dimyristoyl-glycero-3-phosphatidyl-glycerol has been investigated. The data obtained by LC-MS-ESI and spectrophotometric measurements shows that the compounds having quinoid structures, including the antitumor agent doxorubicin, and azoles having nitro groups effectively inhibit free-radical fragmentation of glycerol-1-phosphate and 1,2-dimyristoyl-glycero-3-phosphatidyl-glycerol, decreasing the radiation-chemical yields of either inorganic phosphate or phosphatidic acid respectively. The observed effects of blocking free-radical processes are believed to be related to the ability of the tested compounds to oxidize α-hydroxyl-containing carbon-centered radicals of starting substrates, which give rise to fragmentation reaction. The possibility of using the discovered properties of quinones, doxorubicin and nitroazoles to provide practical solutions in oncological radiotherapy and pathophysiology is discussed.
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Affiliation(s)
- Svetlana N Samovich
- Department of Chemistry of the Belarusian State University, 4 Nezavisimosti Av., 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220050, Minsk, Belarus
| | - Anastasia A Sladkova
- Department of Chemistry of the Belarusian State University, 4 Nezavisimosti Av., 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220050, Minsk, Belarus
| | - Roman L Sverdlov
- Department of Chemistry of the Belarusian State University, 4 Nezavisimosti Av., 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220050, Minsk, Belarus
| | - Irina P Edimecheva
- Research Institute for Physical and Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220050, Minsk, Belarus
| | - Oleg I Shadyro
- Department of Chemistry of the Belarusian State University, 4 Nezavisimosti Av., 220030, Minsk, Belarus; Research Institute for Physical and Chemical Problems of the Belarusian State University, 14 Leningradskaya St., 220050, Minsk, Belarus.
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