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Klyushova LS, Vavilin VA, Grishanova AY. The cytotoxic and antiproliferative properties of ruthenium nitrosyl complexes and their modulation effect on cytochrome P450 in the HepG2 cell line. Biomed Khim 2024; 70:33-40. [PMID: 38450679 DOI: 10.18097/pbmc20247001033] [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] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Ruthenium nitrosyl complexes are actively investigated as antitumor agents. Evaluation of potential interactions between cytochromes P450 (CYPs) with new compounds is carried out regularly during early drug development. In this study we have investigated the cytotoxic and antiproliferative activities of ruthenium nitrosyl complexes with methyl/ethyl esters of nicotinic and isonicotinic acids and γ-picoline against 2D and 3D cultures of human hepatocellular carcinoma HepG2 and non-cancer human lung fibroblasts MRC-5, assessed their photoinduced activity at λrad = 445 nm, and also evaluated their modulating effect on CYP3A4, CYP2C9, and CYP2C19. The study of cytotoxic and antiproliferative activities against 2D and 3D cell models was performed using phenotypic-based high content screening (HCS). The expression of CYP3A4, CYP2C9, and CYP2C19 mRNAs and CYP3A4 protein was examined using target-based HCS. The results of CYP3A4 mRNA expression were confirmed by real-time reverse transcription-polymerase chain reaction (RT-PCR). The ruthenium nitrosyl complexes exhibited a dose-dependent cytotoxic effect against HepG2 and MRC-5 cells. The cytotoxic activity of complexes with ethyl isonicotinate (1) and nicotinate (3, 4) was significantly lower for MRC-5 than for HepG2, for a complex with methyl isonicotinate (2) it was higher for MRC-5 than for HepG2, for a complex with γ-picoline (5) it was comparable for both lines. The antiproliferative effect of complexes 2 and 5 was one order of magnitude higher for MRC-5; for complexes 1, 3, and 4 it was comparable for both lines. The cytotoxic activity of all compounds for 3D HepG2 was lower than for 2D HepG2, with the exception of 4. Photoactivation affected the activity of complex 1 only. Its cytotoxic activity decreased, while the antiproliferative activity increased. The ruthenium nitrosyl complexes 1-4 acted as inducers of CYP3A4 and CYP2C19, while the complex with γ-picoline (5) induced of CYP3A4. Among the studied ruthenium nitrosyl complexes, the most promising potential antitumor compound is the ruthenium compound with methyl nicotinate (4).
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Affiliation(s)
- L S Klyushova
- Institute of Molecular Biology and Biophysics, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - V A Vavilin
- Institute of Molecular Biology and Biophysics, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - A Yu Grishanova
- Institute of Molecular Biology and Biophysics, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
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Mosalev KI, Ivanov ID, Tenditnik MV, Shults EE, Vavilin VA. Hepatotropic activity of a betulonic acid based compound. Biomed Khim 2024; 70:15-24. [PMID: 38450677 DOI: 10.18097/pbmc20247001015] [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] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Using the model of cyclophosphamide (CP)-induced immunosuppression in C57BL/6 mice, the hepatotropic effects of a conjugate of betulonic acid with 9-(4-methylpiperazin-1-ylmethyl)-2-(1,2,3-triazolyl) oreozelone (BABC) have been studied. In the liver of treated animals the expression of genes for cytochromes (CYP 1A1, CYP 1A2, CYP 3A44, CYP 2B10, CYP 2C29, CYP 17A1), PPARA, and cytokines (TNF-α, IL-1β, IL-12α, IL-10) and the relative levels of NF-κB p65, GST-π, and NAT-1 proteins were determined. On day six after administration of the compound and CP to animals a significant (3.2-fold) increase in the expression of the CYP 2B10 as compared to the control group was observed. Treatment of mice with the compound and CP also caused a 2.4-fold increase in the mRNA level of the pro-inflammatory TNF-α gene as compared to the group of animals receiving CP. Administration of the studied compound to intact animals was accompanied by a 2.5-fold increase in the IL-1β expression and a 1.8-fold decrease in the IL-10 expression as compared to the control group. An increase in the expression of pro-inflammatory cytokine genes in the liver of animals treated with the compound was accompanied by an increase in the content of NF-κB p65 (by 1.6 times), as well as an increase in the relative amount of NAT-1 protein (by 2.7 times) as compared to control animals.
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Affiliation(s)
- K I Mosalev
- Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia
| | - I D Ivanov
- Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia
| | - M V Tenditnik
- Research Institute of Neurosciences and Medicine, Novosibirsk, Russia
| | - E E Shults
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Novosibirsk, Russia
| | - V A Vavilin
- Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia
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Mosalev KI, Ivanov ID, Miroshnichenko SM, Tenditnik MV, Bgatova NP, Shults EE, Vavilin VA. The immunomodulatory activity of the betulonic acid based compound. Biomed Khim 2023; 69:219-227. [PMID: 37705482 DOI: 10.18097/pbmc20236904219] [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] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
The immunomodulatory activity of a betulonic acid-based compound with furocoumarin (BABCF; 2-azido, 9-N-methylpiperazinomethyl oreozelone) has been investigated. Male C57BL/6 mice (aged 3 months) treated with the cytostatic agent cyclophosphamide (CP) and intact individuals served as experimental models. The expression of genes was studied in bone marrow (IL-12, IL-10, IL-1β, TNF-α, TGF-β, M-CSF, GM-CSF) or in the suspension of peritoneal cells (IL-12, IL-10; as the injection site). The surface markers of T-lymphocytes (CD3, CD4, and CD8) in fractions of venous blood mononuclear cells (MNCs) were determined by means of flow cytometry using antibodies. Histological and morphometric studies were performed to assess the impact of CP and BABCF on the thymus. BABCF caused a pronounced (about 3-fold) increase in relative expression of the GM-KSF gene. BABCF caused a local increase in the expression of IL-12 in the peritoneal cavity cells and restored the relative content of T-lymphocytes in the blood of CP-treated mice treated affecting mainly CD3⁺CD4⁺ lymphocytes. This substance reduced the tissue density of the thymic cortex and thymic medulla in CP-treated mice. Thus, results of this study suggest that BABCF exhibits a stimulating effect on the cellular link of immunity and promotes maintenance of the number of T-lymphocytes in the blood due to their migration from the central organs of the immune system.
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Affiliation(s)
- K I Mosalev
- Federal Research Center for Fundamental and Translational Medicine, Moscow, Russia
| | - I D Ivanov
- Federal Research Center for Fundamental and Translational Medicine, Moscow, Russia
| | - S M Miroshnichenko
- Federal Research Center for Fundamental and Translational Medicine, Moscow, Russia
| | - M V Tenditnik
- Research Institute of Neurosciences and Medicine, Novosibirsk, Russia
| | - N P Bgatova
- Scientific Research Institute of Clinical and Experimental Lymphology - Branch of the Federal Research Center of the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E E Shults
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - V A Vavilin
- Federal Research Center for Fundamental and Translational Medicine, Moscow, Russia
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Vavilin VA, Lokshina LY. Application of Basic Isotope Equations to Describe the Dynamics of Microbiological Processes: Deuterium Redistribution. Biophysics (Nagoya-shi) 2022. [DOI: 10.1134/s0006350922060240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
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Korolenko TA, Shintyapina AB, Pupyshev AB, Akopyan AA, Russkikh GS, Dikovskaya MA, Vavilin VA, Zavjalov EL, Tikhonova MA, Amstislavskaya TG. The regulatory role of cystatin C in autophagy and neurodegeneration. Vavilovskii Zhurnal Genet Selektsii 2019. [DOI: 10.18699/vj19.507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Autophagy is a dynamic cellular process involved in the turnover of proteins, protein complexes, and organelles through lysosomal degradation. It is particularly important in neurons, which do not have a proliferative option for cellular repair. Autophagy has been shown to be suppressed in the striatum of a transgenic mouse model of Parkinson’s disease. Cystatin C is one of the potent regulators of autophagy. Changes in the expression and secretion of cystatin C in the brain have been shown in amyotrophic lateral sclerosis, Alzheimer’s and Parkinson’s diseases, and in some animal models of neurodegeneration, thus proving a protective function of cystatin C. It has been suggested that cystatin C plays the primary role in amyloidogenesis and shows promise as a therapeutic agent for neurodegenerative diseases (Alzheimer’s and Parkinson’s diseases). Cystatin C colocalizes with the amyloid β-protein in the brain during Alzheimer’s disease. Controlled expression of a cystatin C peptide has been proposed as a new approach to therapy for Alzheimer’s disease. In Parkinson’s disease, serum cystatin C levels can predict disease severity and cognitive dysfunction, although the exact involvement of cystatin C remains unclear. The aim: to study the role of cystatin C in neurodegeneration and evaluate the results in relation to the mechanism of autophagy. In our study on humans, a higher concentration of cystatin C was noted in cerebrospinal fluid than in serum; much lower concentrations were observed in other biological fluids (intraocular fluid, bile, and sweat). In elderly persons (61–80 years old compared to practically healthy people at 40–60 years of age), we revealed increased cystatin C levels both in serum and intraocular fluid. In an experiment on C57Bl/6J mice, cystatin C concentration was significantly higher in brain tissue than in the liver and spleen: an indication of an important function of this cysteine protease inhibitor in the brain. Using a transgenic mouse model of Parkinson’s disease (5 months old), we demonstrated a significant increase in osmotic susceptibility of brain lysosomes, depending on autophagy, while in a murine model of Alzheimer’s disease, this parameter did not differ from that in the appropriate control.
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Affiliation(s)
- T. A. Korolenko
- Scientific Research Institute of Physiology and Basic Medicine
| | - A. B. Shintyapina
- Scientific Research Institute of Molecular Biology and Biophysics, Federal Research Center for Basic and Translational Medicine
| | - A. B. Pupyshev
- Scientific Research Institute of Physiology and Basic Medicine
| | - A. A. Akopyan
- Scientific Research Institute of Physiology and Basic Medicine
| | - G. S. Russkikh
- Scientific Research Institute of Biochemistry, Federal Research Center for Basic and Translational Medicine
| | - M. A. Dikovskaya
- Scientific Research Institute of Physiology and Basic Medicine; S.N. Fedorov NMRC “MNTK “Eye Microsurgery”, Novosibirsk Branch
| | - V. A. Vavilin
- Scientific Research Institute of Molecular Biology and Biophysics, Federal Research Center for Basic and Translational Medicine; Institute of Cytology and Genetics, SB RAS
| | | | - M. A. Tikhonova
- Scientific Research Institute of Physiology and Basic Medicine; Novosibirsk State University
| | - T. G. Amstislavskaya
- Scientific Research Institute of Physiology and Basic Medicine; Novosibirsk State University
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Autenshlyus AI, Golovanova AV, Studenikina AA, Brusentsov II, Proskura AV, Zhurakovskiy IP, Arkhipov SA, Sidorov SV, Vavilin VA, Lyakhovich VV. Personalized Approach to Assessing mRNA Expression of Histidine-Rich Glycoprotein and Immunohistochemical Markers in Diseases of the Breast. DOKL BIOCHEM BIOPHYS 2019; 484:59-62. [PMID: 31012015 DOI: 10.1134/s1607672919010162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Indexed: 11/23/2022]
Abstract
Biopsy material of patients with malignant and benign breast diseases was examined. HRG mRNA expression was detected in 70% of cases in biopsy material obtained from patients with nonspecific invasive carcinoma and in 66.7% of cases in biopsy material of patients with benign breast diseases. Immunohistochemical analysis revealed expression of collagen II, the beta-1 integrin, and E-cadherin-markers of epithelial-mesenchymal transition. The use of RT-qPCR combined with immunohistochemical study made it possible to identify atypical cells, which can be regarded as precancerous changes, in individual patients.
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Affiliation(s)
- A I Autenshlyus
- Novosibirsk State Medical University, Ministry of Health of the Russian Federation, 630091, Novosibirsk, Russia. .,Research Institute of Molecular Biology and Biophysics, 630117, Novosibirsk, Russia.
| | - A V Golovanova
- Novosibirsk State Medical University, Ministry of Health of the Russian Federation, 630091, Novosibirsk, Russia
| | - A A Studenikina
- Novosibirsk State Medical University, Ministry of Health of the Russian Federation, 630091, Novosibirsk, Russia
| | - I I Brusentsov
- Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
| | - A V Proskura
- Research Institute of Molecular Biology and Biophysics, 630117, Novosibirsk, Russia
| | - I P Zhurakovskiy
- Novosibirsk State Medical University, Ministry of Health of the Russian Federation, 630091, Novosibirsk, Russia
| | - S A Arkhipov
- Novosibirsk State Medical University, Ministry of Health of the Russian Federation, 630091, Novosibirsk, Russia.,Research Institute of Molecular Biology and Biophysics, 630117, Novosibirsk, Russia
| | - S V Sidorov
- National Research Novosibirsk State University, 630090, Novosibirsk, Russia
| | - V A Vavilin
- Research Institute of Molecular Biology and Biophysics, 630117, Novosibirsk, Russia
| | - V V Lyakhovich
- Research Institute of Molecular Biology and Biophysics, 630117, Novosibirsk, Russia
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Vavilin VA, Rytov SV. Nitrate denitrification with nitrite or nitrous oxide as intermediate products: Stoichiometry, kinetics and dynamics of stable isotope signatures. Chemosphere 2015; 134:417-426. [PMID: 25989520 DOI: 10.1016/j.chemosphere.2015.04.091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 04/21/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
A kinetic analysis of nitrate denitrification by a single or two species of denitrifying bacteria with glucose or ethanol as a carbon source and nitrite or nitrous oxide as intermediate products was performed using experimental data published earlier (Menyailo and Hungate, 2006; Vidal-Gavilan et al., 2013). Modified Monod kinetics was used in the dynamic biological model. The special equations were added to the common dynamic biological model to describe how isotopic fractionation between N species changes. In contrast to the generally assumed first-order kinetics, in this paper, the traditional Rayleigh equation describing stable nitrogen and oxygen isotope fractionation in nitrate was derived from the dynamic isotopic equations for any type of kinetics. In accordance with the model, in Vidal-Gavilan's experiments, the maximum specific rate of nitrate reduction was proved to be less for ethanol compared to glucose. Conversely, the maximum specific rate of nitrite reduction was proved to be much less for glucose compared to ethanol. Thus, the intermediate nitrite concentration was negligible for the ethanol experiment, while it was significant for the glucose experiment. In Menyailo's and Hungate's experiments, the low value of maximum specific rate of nitrous oxide reduction gives high intermediate value of nitrous oxide concentration. The model showed that the dynamics of nitrogen and oxygen isotope signatures are responding to the biological dynamics. Two microbial species instead of single denitrifying bacteria are proved to be more adequate to describe the total process of nitrate denitrification to dinitrogen.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute, Russian Academy of Sciences, 3 Gubkina str., Moscow 119333, Russia.
| | - S V Rytov
- Water Problems Institute, Russian Academy of Sciences, 3 Gubkina str., Moscow 119333, Russia
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8
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Shintyapina AB, Safronova OG, Vavilin VA, Kandalintseva NV, Prosenko AE, Lyakhovich VV. Effect of 3-(3'-tert-butyl-4'-hydroxyphenyl)propyl thiosulfonate sodium on expression of GSTP1 and NQO1 genes and protein transcription factors in BALB/c mouse liver. Bull Exp Biol Med 2014; 157:473-5. [PMID: 25110086 DOI: 10.1007/s10517-014-2594-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Indexed: 11/28/2022]
Abstract
The study examined dynamics of the effect of novel phenol antioxidant preparation 3-(3'-tertbutyl- 4'-hydroxyphenyl)propyl thiosulfonate sodium (TS-13) on expression of antioxidant protection enzymes genes GSTP1 and NQO1 and on the content of protein transcription factors NF-κB and ATF-2 in mouse liver. Expression of GSTP1 gene decreased significantly on days 4 and 7 after per os administration of TS-13 (100 mg/kg), but increased on post-administration day 14. On days 7 and 14 post-administration, expression of NQO1 gene was significantly increased. On day 7, the hepatic content of the phosphorylated form of ATF-2 and two subunits of nuclear factor NF-κB (p50, p65) decreased significantly.
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Affiliation(s)
- A B Shintyapina
- Research Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk, Russia,
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9
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Stakhneva EM, Vavilin VA, Ragino YI, Safronova OG, Shintyapina AB, Ivanova MV. Effects of simvaglyzin and atorvaglyzin on the expression of 3-hydroxy-3-methyl-glutaryl-CoA reductase in rat liver. Bull Exp Biol Med 2014; 156:63-5. [PMID: 24319730 DOI: 10.1007/s10517-013-2278-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Activity and levels of protein and mRNA of 3-hydroxy-3-methyl-glutaryl-CoA reductase were estimated in rat liver after the administration of atorvastatin and simvastatin and their complexes with glycyrrhizic acid (atorvaglyzin and simvaglyzin). The amount of 3-hydroxy-3-methyl-glutaryl-CoA reductase protein in rats decreased by 13 and 25% (p<0.05) 24 h after treatment with atorvaglyzin and simvaglyzin, respectively. Activity of this enzyme decreased by 46% in rats treated with atorvaglyzin. The amount of messenger RNA in these groups significantly increased as compared to control group (untreated animals).
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Affiliation(s)
- E M Stakhneva
- Research Institute of Therapy, Siberian Division of the Russian Academy of Medical Sciences; Research Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk.
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Vavilin VA, Nepomnyashchikh DL, Shchepotina EG, Karavaeva YY, Makarova SI, Vinogradova EV, Kudryashov AV, Nokhrina ZV, Lyakhovich VV. Cytochrome P450 4F2 Polymorphism in Patients with Liver Cirrhosis. Bull Exp Biol Med 2013; 156:181-4. [DOI: 10.1007/s10517-013-2305-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Nepomnyashchikh DL, Vavilin VA, Aidagulova SV, Makarova SI, Karavaeva YY, Shchepotina EG, Postnikova OA, Nokhrina ZV, Vinogradova EV, Lyakhovich VV. Cytochrome P450 2D6 polymorphism is a molecular genetic marker of liver cirrhosis progression. Bull Exp Biol Med 2012; 152:633-6. [PMID: 22803153 DOI: 10.1007/s10517-012-1595-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Patients with infectious viral or toxic cirrhosis of the liver participated in complex clinical pathomorphological and molecular-genetic study aimed at the search for markers of predisposition to accelerated liver fibrosis, in which the xenobiotic biotransformation system is involved. The results demonstrate association between CYP2D6 (1846G/A) genotype and rapid cirrhosis development and indicate the necessity of studying the mechanisms underlying this association.
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Affiliation(s)
- D L Nepomnyashchikh
- Institute of Regional Pathology and Pathomorphology, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk, Russia.
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Vavilin VA. Estimating evolution of δ13CH4 during methanization of cellulosic waste based on stoichiometric chemical reactions, microbial dynamics and stable carbon isotope fractionation. Bioresour Technol 2012; 110:706-710. [PMID: 22326116 DOI: 10.1016/j.biortech.2012.01.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 01/12/2012] [Accepted: 01/14/2012] [Indexed: 05/31/2023]
Abstract
A change in δ(13)CH(4) during mesophilic methanization of cellulosic waste (paper and cardboard) was described using a mathematical model based on stoichiometric chemical reactions, microbial dynamics and the equation for the (13)C isotope accumulation in products including isotope fractionation. In this study, experimental data, previously obtained by Qu et al. (2009), was used to model metabolic pathways of cellulose transformation. A significant change in δ(13)CH(4) occurred in time during cellulosic waste methanization which was in accordance with the model. It was explained by the change in input of acetoclastic and hydrogenotrophic methanogenesis as well as by fractionation of stable carbon isotopes (13)C and (12)C which was much higher for hydrogenotrophic methanogenesis when compared to acetoclastic methanogenesis.
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Affiliation(s)
- V A Vavilin
- Ecological Department of Water Problems Institute, Russian Academy of Sciences, 3 Gubkina Str., Moscow 119333, Russian Federation.
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Vavilin VA. Estimating evolution of δ(13)CH(4) during methanization of municipal solid waste based on chemical reactions, isotope accumulation in products and microbial ecology. Water Sci Technol 2012; 65:270-276. [PMID: 22233905 DOI: 10.2166/wst.2012.791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Natural isotopic composition in substrate may be used to reveal the metabolic pathways of substrate transformation by microbial community. In this paper, a change in δ(13)CH(4) during methanization of reconstituted municipal solid waste was described using a mathematical model based on stoichiometric chemical reactions, equation for the (13)C isotope accumulation in products at the low natural C(13)/C(12) ratio and microbial ecology. A set of experimental data used in the model was taken from Qu et al. (2009a). According to the model, during mesophilic municipal solid waste methanization initially hydrogenotrophic and further aceticlastic methanogenesis dominated. At the final stage hydrogenotrophic methanogenesis followed by acetate oxidation dominated again. In spite of rather high measured values of δ(13)C for CO(2) above -21‰, a sharp decrease in δ(13)CH(4) from -20‰ to -60‰ at the final stage was explained by a larger fractionation against (13)C during methanogenesis from H(2)/H(2)CO(3) due to a kinetic isotope effect when hydrogenotrophic methanogens preferentially take down light (12)C. The model also confirmed that in thermophilic conditions a comparatively stable value of δ(13)CH(4) about -60‰ measured earlier (Qu et al. 2009b) was due to a dominance of hydrogenotrophic methanogenesis during all methanization process of cardboard waste.
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Affiliation(s)
- V A Vavilin
- Russian Academy of Sciences, Moscow, Russian Federation.
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Kudryashov AV, Vavilin VA, Kolpakova TA, Mutaykhan Z, Krasnov VA, Lyakhovich VV. Relationship between CYP2E1 Polymorphism and Increase of ALT Activity during Therapy of Patients with Pulmonary Tuberculosis. Bull Exp Biol Med 2011; 151:741-6. [DOI: 10.1007/s10517-011-1430-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kolosova NG, Akulov AE, Stefanova NA, Moshkin MP, Savelov AA, Koptyug IV, Panov AV, Vavilin VA. Effect of malate on the development of rotenone-induced brain changes in Wistar and OXYS rats: An MRI study. Dokl Biol Sci 2011; 437:72-5. [PMID: 21562948 DOI: 10.1134/s0012496611020049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Indexed: 12/21/2022]
Affiliation(s)
- N G Kolosova
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, Russia
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Panov AV, Vavilin VA, Lyakhovich VV, Brooks BR, Bonkovsky HL. Effect of bovine serum albumin on mitochondrial respiration in the brain and liver of mice and rats. Bull Exp Biol Med 2011; 149:187-90. [PMID: 21113488 DOI: 10.1007/s10517-010-0904-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
We studied the effect of BSA (in the isolation medium) on the oxidation rate of succinate, glutamate, pyruvate, and α-ketoglutarate by mitochondria of the brain and liver from C57Bl/6g mice and Taconic Sprague Dawley rats. BSA had no effect on liver mitochondrial respiration, but increased oxidation of substrates (particularly of succinate) in brain mitochondria. Therefore, the major effect of BSA on brain mitochondria is manifested in activation of SDH. The improvement of mitochondrial properties in the brain after treatment with BSA is associated with antioxidant activity of this agent. Our results confirm the hypothesis that inhibition of SDH in brain mitochondria is not the artifact. This process serves as a mechanism protecting neurons from free oxygen radicals during succinate oxidation.
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Affiliation(s)
- A V Panov
- Cannon Research Center, Carolinas Medical Center, Charlotte, North Carolina, USA.
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Vavilin VA. [From a periodic chemical reaction to the dynamics of microbial communities]. Biofizika 2009; 54:1144-1150. [PMID: 20067197] [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: 05/28/2023]
Abstract
The first articles published by Anatol Zhabotinsky have been analyzed. The mechanisms of the Belousov-Zhabotinsky and Bray-Liebhafsky oscillating chemical reactions were compared. It was shown that the traditional chemical kinetics, the new methods of molecular biology as well as isotopic composition analysis made it possible to consider new constraints concerning the degradation of organic matter and microbial dynamics. A mathematical model was developed to describe isotope accumulation in biomass and reaction products.
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Qu X, Vavilin VA, Mazéas L, Lemunier M, Duquennoi C, He PJ, Bouchez T. Anaerobic biodegradation of cellulosic material: batch experiments and modelling based on isotopic data and focusing on aceticlastic and non-aceticlastic methanogenesis. Waste Manag 2009; 29:1828-1837. [PMID: 19157832 DOI: 10.1016/j.wasman.2008.12.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2008] [Revised: 11/30/2008] [Accepted: 12/04/2008] [Indexed: 05/27/2023]
Abstract
Utilizing stable carbon isotope data to account for aceticlastic and non-aceticlastic pathways of methane generation, a model was created to describe laboratory batch anaerobic decomposition of cellulosic materials (office paper and cardboard). The total organic and inorganic carbon concentrations, methane production volume, and methane and CO(2) partial pressure values were used for the model calibration and validation. According to the fluorescent in situ hybridization observations, three groups of methanogens including strictly hydrogenotrophic methanogens, strictly aceticlastic methanogens (Methanosaeta sp.) and Methanosarcina sp., consuming both acetate and H(2)/H(2)CO(3) as well as acetate-oxidizing syntrophs, were considered. It was shown that temporary inhibition of aceticlastic methanogens by non-ionized volatile fatty acids or acidic pH was responsible for two-step methane production from office paper at 35 degrees C where during the first and second steps methane was generated mostly from H(2)/H(2)CO(3) and acetate, respectively. Water saturated and unsaturated cases were tested. According to the model, at the intermediate moisture (150%), much lower methane production occurred because of full-time inhibition of aceticlastic methanogens. At the lowest moisture, methane production was very low because most likely hydrolysis was seriously inhibited. Simulations showed that during cardboard and office paper biodegradation at 55 degrees C, non-aceticlastic syntrophic oxidation by acetate-oxidizing syntrophs and hydrogenotrophic methanogens were the dominant methanogenic pathways.
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Affiliation(s)
- X Qu
- Tongji University, Shanghai 200092, China
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20
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Ragino YI, Vavilin VA, Salakhutdinov NF, Makarova SI, Stakhneva EM, Safronova OG, Lyakhovich VV, Nikitin YP, Tolstikov GA. Antioxidant and endothelium-stabilizing effects of simvaglyzin on rabbits with experimental hypercholesterolemia. Bull Exp Biol Med 2009; 146:206-9. [PMID: 19145319 DOI: 10.1007/s10517-008-0252-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Simvaglyzin, a complex compound of simvastatin and glycyrrhizic acid, administered to rabbits with experimental hypercholesterolemiain in doses equivalent to 66.6 and 40 microg/kg simvastatin exhibited antioxidant capacity (decreased the content of lipid peroxidation products in the blood by 27-41%) and endothelium-normalizing effect (decreased the level of von Willebrand factor and endothelin-1 by 26-58 and 21-29%, respectively, compared to 200 microg/kg simvastatin, p<0.05).
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Affiliation(s)
- Yu I Ragino
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
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21
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Vavilin VA, Qu X, Qu X, Mazéas L, Lemunier M, Duquennoi C, Mouchel JM, He P, Bouchez T. Similar evolution in delta 13CH4 and model-predicted relative rate of aceticlastic methanogenesis during mesophilic methanization of municipal solid wastes. Water Sci Technol 2009; 60:3173-3179. [PMID: 19955641 DOI: 10.2166/wst.2009.724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Similar evolution was obtained for the stable carbon isotope signatures delta (13)CH(4) and the model-predicted relative rate of aceticlastic methanogenesis during mesophilic methanization of municipal solid wastes. In batch incubations, the importance of aceticlastic and hydrogenotrophic methanogenesis changes in time. Initially, hydrogenotrophic methanogenesis dominated, but increasing population of Methanosarcina sp. enhances aceticlastic methanogenesis. Later, hydrogenotrophic methanogenesis intensified again. A mathematical model was developed to evaluate the relative contribution of hydrogenotrophic and aceticlastic pathways of methane generation during mesophilic batch anaerobic biodegradation of the French and the Chinese Municipal Solid Wastes (FMSW and CMSW). Taking into account molecular biology analysis reported earlier three groups of methanogens including strictly hydrogenotrophic methanogens, strictly aceticlastic methanogens (Methanosaeta sp.) and Methanosarcina sp., consuming both acetate and H(2)/H(2)CO(3) were considered in the model. The total organic and inorganic carbon concentrations, methane production volume, methane and carbon dioxide partial pressures values were used for the model calibration and validation. Methane isotopic composition (delta (13)CH(4)) evolution during the incubations was used to independently validate the model results. The model demonstrated that only the putrescible solid waste was totally converted to methane.
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Affiliation(s)
- V A Vavilin
- Cemagref, UR-HBAN, Parc de Tourvoie, Antony cedex F-92163, France
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22
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Vavilin VA, Salakhutdinov NF, Ragino YI, Polyakov NE, Taraban MB, Leshina TV, Stakhneva EM, Lyakhovich VV, Nikitin YP, Tolstikov GA. The cholesterol lowering properties of the complex compound simvastatin with glycyrrhizic acid (simvaglyzin) in experimental models. Biochem Moscow Suppl Ser B 2008. [DOI: 10.1134/s1990750808040070] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Nikishina MV, Vavilin VA, Lyakhovich VV. Study of Polymorphic Variants C190T, G191A, G857A, and 859Del of the NAT2 Gene by the Method of Restriction Fragment Length Polymorphism. Bull Exp Biol Med 2008; 146:420-3. [DOI: 10.1007/s10517-009-0309-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Vavilin VA, Salakhutdinov NF, Ragino II, Poliakov NE, Taraban MB, Leshina TV, Stakhneva EM, Liakhovich VV, Nikitin IP, Tolstikov GA. [Cholesterol lowering properties of a complex compound simvastatin with glycyrrhizic acid (simvaglyzin) in experimental models]. Biomed Khim 2008; 54:301-313. [PMID: 18712086] [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: 05/26/2023]
Abstract
A molecular complex of simvastatin (SV) and glycyrrhyzic acid (GA) (at the ratio of 1 : 4), has been synthesized. The complex named "simvaglyzin" (SVG) was stable in aqeous and aqua-alcohol solutions at GA concentrations exceeding 0.2 mM. In vitro SVG acted as uncompetitive inhibitor of 3-hydroxy-3-methyl-glutaryl-CoA reductase (Ki = 94 nM). Appearance of this inhibitory activity is associated with the cytochrome P450-dependent conversion of SVG. The addition of 1 mM methyrapone into incubation medium fully prevented the inhibition of 3-HMG-CoA reductase. SV and SVG (used at 300 nM concentration) inhibited mevalonate synthesis rate by 39.15+/-8.27% and 38.85+/-3.04%, respectively. In vivo SVG showed dose-dependent cholesterol-lowering effect. In rats the cholesterol-lowering effect of SVG used at daily doses corresponding to 66 and 100 mg/kg of SV was equal to the effect of the daily dose 200 mg/kg of SV. The decreases of total cholesterol level in blood serum were 7%, 9% and 8%, respectively. Myotoxicity of those SVG doses estimated by creatine phosphokinase (CPK) activity in blood serum was lower than that of SV. In rats treated with SV the activity of CPK increased by 79% (p<0.01), while in SVG treated rats by 30% and 36% (p<0.05). Any increase of hepatotoxicity markers alanine aminotransferse or aspartate aminotransferase in blood serum was not observed. The data suggest pharmacological synergism attributed to the SV-GA complex formation and elevated safety of the resultant complex compared with the parent compound.
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Vavilin VA, Fernandez B, Palatsi J, Flotats X. Hydrolysis kinetics in anaerobic degradation of particulate organic material: an overview. Waste Manag 2008; 28:939-51. [PMID: 17544638 DOI: 10.1016/j.wasman.2007.03.028] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Revised: 01/16/2007] [Accepted: 03/14/2007] [Indexed: 05/15/2023]
Abstract
The applicability of different kinetics to the hydrolysis of particulate organic material in anaerobic digestion is discussed. Hydrolysis has traditionally been modelled according to the first-order kinetics. For complex substrate, the first-order kinetics should be modified in order to take into account hardly degradable material. It has been shown that models in which hydrolysis is coupled to the growth of hydrolytic bacteria work well at high or at fluctuant organic loading. In particular, the surface-related two-phase and the Contois models showed good fits to experimental data from a wide range of organic waste. Both models tend to the first-order kinetics at a high biomass-to-waste ratio and, for this reason, they can be considered as more general models. Examples on different inhibition processes that might affect the degradation of solid waste are reported. Acetogenesis or methanogenesis might be the rate-limiting stages in complex waste. In such cases, stimulation of hydrolysis (mechanically, chemically or biologically) may lead to a further inhibition of these stages, which ultimately affects hydrolysis as well. Since the hydrolysis process is characterized by surface and transport phenomena, new developments in spatially distributed models are considered fundamental to provide new insights in this complex process.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute of the Russian Academy of Sciences, Moscow 119991, Russian Federation
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26
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Vavilin VA, Lokshina LY, Flotats X, Angelidaki I. Anaerobic digestion of solid material: multidimensional modeling of continuous-flow reactor with non-uniform influent concentration distributions. Biotechnol Bioeng 2007; 97:354-66. [PMID: 17058285 DOI: 10.1002/bit.21239] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [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: 11/11/2022]
Abstract
A new multidimensional (3 and 2D) anaerobic digestion model for cylindrical reactor with non-uniform influent concentration distributions was developed to study the way in which mixing intensity affects the efficiency of continuous-flow anaerobic digestion. Batch experiments reported and simulated earlier by Vavilin and Angelidaki (2005) were used to modernize a kinetic scheme and to obtain the corresponding kinetic coefficients. In the new models, hydrolytic microorganisms were included using Contois kinetics for the hydrolysis/acidogenesis degradation of municipal solid waste (MSW). Monod kinetics was applied for description of methanogenesis. Both hydrolytic and methanogenic microorganisms were assumed to be inhibited by high volatile fatty acids (VFA) concentration. According to the new distributed models, the mixing level reduction expressed by increasing dimensionless Peclet number may improve the continuous flow reactor performance at the relatively low influent methanogenic biomass concentration. In the continuously stirred tank reactor (CSTR) there are two steady states with and without methane production at slightly different values of initial methanogenic biomass concentration. In the system, the threshold methanogenic biomass concentration existed because of inhibition by high VFA concentration. High methanogenic biomass concentration is required for efficient anaerobic digestion of MSW in order to avoid possible inhibition due to high VFA build-up. Thus, CSTR configuration might have unstable dynamics at high organic loading as shown in earlier experiments carried out by Stroot et al. (2001). A gradual increase of organic loading during the start up of a completely mixed digester causing an accumulation of methanogenic biomass is a solution to prevent a probable digester failure. According to the distributed models a plug-flow reactor with non-uniform influent concentration distributions where methanogenic and hydrolytic microorganisms are separated has significant methane production and solids removal at the relatively low influent methanogenic biomass concentration.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute, Russian Academy of Sciences, Gubkina str. 3, Moscow, 119991, Russian Federation.
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Zenkov NK, Menshchikova EB, Kandalintseva NV, Oleynik AS, Prosenko AE, Gusachenko ON, Shklyaeva OA, Vavilin VA, Lyakhovich VV. Antioxidant and antiinflammatory activity of new water-soluble sulfur-containing phenolic compounds. Biochemistry Moscow 2007; 72:644-51. [PMID: 17630909 DOI: 10.1134/s0006297907060077] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We synthesized a series of structurally related water-soluble alkyl phenols - sodium 4-hydroxyphenyl propyl sulfonates and thiosulfonates with different number of tert-butyl groups at the ortho-position. In experimental systems of transient metal-induced ethyl oleate and low-density lipoprotein oxidation the antioxidant activity of the compounds increased when the tert-butyl group number at the ortho-position increased and when the sulfonate group was replaced with thiosulfonate. Compounds containing thiosulfonate group in para-propyl substituent also more effectively inhibited reactive oxygen metabolites generated in xanthine-xanthine oxidase system and during morpholinosydnonimine decomposition compared to sulfonate-containing analogs. Phenols with one tert-butyl group at the ortho-position have been shown to exhibit the highest antiinflammatory activity in the model of carrageenan-induced rat paw inflammation, as well as with regard to the expression of the glutathione S-transferase P1-1 gene in HepG2 human hepatoma cell line. Thus, it can be reasonably speculated that the antiinflammatory activity of sulfur-containing phenolic antioxidants in vivo is mediated by their effect on redox-sensitive transcription factors.
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Affiliation(s)
- N K Zenkov
- Scientific Center of Clinical and Experimental Medicine, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk 630117, Russia
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Shchepotina EG, Vavilin VA, Goreva OB, Lyakhovich VV. Some mutations of exon-7 in cytochrome P450 gene 3A4 and their effect on 6beta-hydroxylation of cortisol. Bull Exp Biol Med 2007; 141:701-3. [PMID: 17364054 DOI: 10.1007/s10517-006-0257-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/25/2022]
Abstract
Analysis of variants of exon 7 sequences in cytochrome P450 gene 3A4 in a sample of Caucasoid persons was carried out. The effect of these variants on activity of CYP3A was assessed by the level of cortisol 6beta-hydroxylation. Alleles CYP3A4*5 and *17 were not detected: probably, these mutations are rare and consequently they have little effect on the character of polymorphic distribution of CYP3A4 activity in this population. The incidence of CYP3A4*2 was 5.26%. The 6betaOH-cortisol/cortisol ratio in an individual with CYP3A4*2/*2 genotype was 7.408, which corresponded to "slow metabolizer" phenotype in this sample.
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Affiliation(s)
- E G Shchepotina
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk.
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29
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Shamanina MI, Vavilin VA, Mordvinov VA, Katokhin AV, Kuznetsova TN, Liakhovich VV. [Real-time polymerase chain reaction and its potential clinical application]. Vestn Ross Akad Med Nauk 2007:37-46. [PMID: 17718077] [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: 05/16/2023]
Abstract
The review introduces real-time polymerase technique, a modern high-tech method, to the medical community. Physico-chemical principles of the method, its main stages, and variants of techniques applying fluorescent reporter platforms are considered. Equations used for quantitative estimation, methods of data processing are given; absolute and relative quantification of specific targets is considered. The special part of the review is dedicated to clinical application of the method by the example of infectious and oncological diseases.
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Lyakhovich VV, Vavilin VA, Zenkov NK, Menshchikova EB. Active defense under oxidative stress. The antioxidant responsive element. Biochemistry (Mosc) 2006; 71:962-74. [PMID: 17009949 DOI: 10.1134/s0006297906090033] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This review considers the mechanisms and factors that stimulate transcription of genes regulated by the antioxidant responsive element (ARE). The latter is important for cell defense under conditions of oxidative stress and also for detoxification of electrophilic xenobiotics. There are differences in regulation of intracellular homeostasis involving Nrf2-mediated activation of ARE and other redox-sensitive factors (NF-kappaB and AP-1).
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Affiliation(s)
- V V Lyakhovich
- Institute of Molecular Biology and Biophysics, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk 630117, Russia
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Schwartz YS, Dushkin MI, Vavilin VA, Melnikova EV, Khoschenko OM, Kozlov VA, Agafonov AP, Alekseev AY, Rassadkin Y, Shestapalov AM, Azaev MS, Saraev DV, Filimonov PN, Kurunov Y, Svistelnik AV, Krasnov VA, Pathak A, Derrick SC, Reynolds RC, Morris S, Blinov VM. Novel conjugate of moxifloxacin and carboxymethylated glucan with enhanced activity against Mycobacterium tuberculosis. Antimicrob Agents Chemother 2006; 50:1982-8. [PMID: 16723555 PMCID: PMC1479142 DOI: 10.1128/aac.00362-05] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/20/2022] Open
Abstract
Mycobacterium tuberculosis is an intracellular pathogen that persists within macrophages of the human host. One approach to improving the treatment of tuberculosis (TB) is the targeted delivery of antibiotics to macrophages using ligands to macrophage receptors. The moxifloxacin-conjugated dansylated carboxymethylglucan (M-DCMG) conjugate was prepared by chemically linking dansylcadaverine (D) and moxifloxacin (M) to carboxymethylglucan (CMG), a known ligand of macrophage scavenger receptors. The targeted delivery to macrophages and the antituberculosis activity of the conjugate M-DCMG were studied in vitro and in vivo. Using fluorescence microscopy, fluorimetry, and the J774 macrophage cell line, M-DCMG was shown to accumulate in macrophages through scavenger receptors in a dose-dependent (1 to 50 microg/ml) manner. After intravenous administration of M-DCMG into C57BL/6 mice, the fluorescent conjugate was concentrated in the macrophages of the lungs and spleen. Analyses of the pharmacokinetics of the conjugate demonstrated that M-DCMG was more rapidly accumulated and more persistent in tissues than free moxifloxacin. Importantly, therapeutic studies of mycobacterial growth in C57BL/6 mice showed that the M-DCMG conjugate was significantly more potent than free moxifloxacin.
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Affiliation(s)
- Y S Schwartz
- Institute of Clinical Immunology SD RAMS, Novosibirsk, Russia
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Shchepotina EG, Nikishina MV, Vavilin VA, Lyakhovich VV. Analysis of restriction fragment length polymorphism of cytochrome P450 3A43 gene and evaluation of the incidence of CYP3A43*1B allele in europeoid residents of West Siberia. Bull Exp Biol Med 2006; 140:726-8. [PMID: 16848237 DOI: 10.1007/s10517-006-0067-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Analysis of restriction fragment length polymorphism is proposed for detecting CYP3A43 gene c1047 > T mutation. The incidence of this mutation (CYP3A43*1B allele) was evaluated in 102 europeoid residents of West Siberia and it was found to be 12.25%.
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Affiliation(s)
- E G Shchepotina
- Institute of Molecular Biology and Biophysics, Siberian Division of Russian Academy of Medical Sciences, Novosibirsk
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Abstract
Experimental data from a study using a landfill simulation reactor were used to develop and calibrate a one-dimensional distributed model of co-digestion of municipal solid waste and three phthalic acid diesters with different water solubilities. The three diesters were diethyl phthalate, dibutyl phthalate, and di-2-ethylhexyl phthalate. Two types of municipal solid wastes were assumed, easily degradable and recalcitrant. The model considered inhibition of hydrolysis of the recalcitrant fraction and phthalic acid esters, and also methanogenesis at acidic pH. The results indicated that the prolonged steady-state concentrations of the diesters in the leachates could be explained by equilibrium between physicochemical desorption and sorption processes for the three diesters. When methanogenic conditions were induced in the acidogenic landfill simulation reactor, inhibition of both hydrolysis of recalcitrant MSW and of phthalic acid esters ceased.
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Affiliation(s)
- S Jonsson
- Department of Water and Environmental Studies, Linköping University, SE-581 83 Linköping, Sweden.
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Makarova SI, Dodunova EM, Ivanova GG, Vavilin VA, Kaznacheeva LF, Lyakhovich VV. Polymorphism of arylamine-N-acetyltransferase 2 gene is associated with the risk of atopic dermatitis. Bull Exp Biol Med 2005; 139:662-4. [PMID: 16224574 DOI: 10.1007/s10517-005-0371-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 10/25/2022]
Abstract
A case--control study was conducted to evaluate the relationship between C481T and G590A polymorphisms of arylamine-N-acetyltransferase 2 and predisposition to atopic dermatitis in children. Double heterozygote 481C/T and 590G/A in girls is a factor of resistance to atopic dermatitis, especially in the absence of smoking-related effects.
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Affiliation(s)
- S I Makarova
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Russia.
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Makarova SI, Safronova OG, Vavilin VA, Batychko OA, Gavalov SM, Lyakhovich VV. Atopy parameters in asthmatic children increase with accumulation of null-alleles of glutathione-S-transferase M1. Bull Exp Biol Med 2005; 138:460-2. [PMID: 15723126 DOI: 10.1007/s10517-005-0070-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Atopy parameters (total IgE, skin prick test, and peripheral blood eosinophil count) in children with atopic bronchial asthma depend on the number of glutathione-S-transferase M1 mutant alleles in the genotype and on family history of asthma.
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Affiliation(s)
- S I Makarova
- Institute of Molecular Biology and Biophysics, Siberian Division of Russian Academy of Medical Sciences, Novosibirsk, Russia.
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36
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Vavilin VA, Safronova OG, Manankin NA, Kaznacheeva LF, Lyakhovich VV. Glutathione-S-Transferase Polymorphism and Clinical Features of Acute Drug Poisoning in Children. Bull Exp Biol Med 2005; 139:431-3. [PMID: 16027873 DOI: 10.1007/s10517-005-0314-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We studied the association of GSTM1 and GSTT1 and GSTP1 Ile105-Val105 polymorphism with the duration of intoxication, polyorgan failure, and severity of drug poisoning in children. The combination of GSTM1 and GSTT1 zero genotypes is a favorable sign for the duration of intoxication and severity of the disease.
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Affiliation(s)
- V A Vavilin
- Institute of Molecular Biology and Biophysics, Siberian Division of Russian Academy of Medical Sciences, Russia.
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37
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Jokela JPY, Vavilin VA, Rintala JA. Hydrolysis rates, methane production and nitrogen solubilisation of grey waste components during anaerobic degradation. Bioresour Technol 2005; 96:501-8. [PMID: 15491833 DOI: 10.1016/j.biortech.2004.03.009] [Citation(s) in RCA: 6] [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: 05/15/2002] [Accepted: 03/23/2004] [Indexed: 05/08/2023]
Abstract
Municipal grey waste (i.e. the remaining fraction in municipal waste management systems in which putrescibles (biowaste) and other recyclables (paper, metals, glass) are source-segregated) was manually sorted into six main fractions on the basis of composition and also separated by sieving (100 mm mesh size) into two fractions, oversized and undersized, respectively. In practice, in waste management plant the oversized fraction is (or will be) used to produce refuse-derived fuel and the undersized landfilled after biological stabilisation. The methane yields and nitrogen solubilisation of the grey waste and the different fractions (all studied samples were first milled to 5 mm particle samples) were determined in a 237-day methane production batch assay and in a water elution test, respectively. The grey waste was found to contained remnants of putrescibles and also a high amount of other biodegradable waste, including packaging, cartons and cardboard, newsprint, textiles and diapers. These waste fractions comprised 41%-w/w of the grey waste and produced 40-210 m3 methane (total solids (TS))(-1) and less than 0.01 g NH4-N kg TS(added)(-1) except diapers which produced 9.8 g NH4-N kg TS(added)(-1) in the batch assays. In the case of the two sieved fractions and on mass bases, most of the methane originated from the oversized fraction, whereas most of the NH4-N was solublised from the undersized fraction. The first-order kinetic model described rather well the degradation of each grey waste fraction and component, showing the different components to be in the range 0.021-0.058 d(-1), which was around one-sixth of the values reported for the source-segregated putrescible fraction of MSW.
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Affiliation(s)
- J P Y Jokela
- Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FIN-40351 Jyväskylä, Finland
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Vavilin VA, Safronova OG, Lyapunova AA, Lyakhovich VV, Kaznacheeva LF, Manankin NA, Molokova AV. Interaction of GSTM1, GSTT1, and GSTP1 genotypes in determination of predisposition to atopic dermatitis. Bull Exp Biol Med 2004; 136:388-91. [PMID: 14714091 DOI: 10.1023/b:bebm.0000010960.06583.20] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/12/2022]
Abstract
The frequency of individual genotypes GSTM1, GSTT1, and GSTP1 and haplotypes was determined in patients with atopic dermatitis and healthy children. The actual frequency of some haplotypes was far below the theoretical value. Some haplotypes were associated with predisposition and resistance to atopic dermatitis.
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Affiliation(s)
- V A Vavilin
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk.
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39
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Nikishina MV, Makarova SI, Akishev AG, Vavilin VA, Degtiarev SK, Liakhovich VV. [Restriction analysis of N-acetyltransferase 2 gene in Caucasian population of West Siberia]. Genetika 2004; 40:1557-1561. [PMID: 15612575] [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: 05/24/2023]
Abstract
Restriction analysis of the NAT2 gene was carried out in inhabitants of Novosibirsk. Polymorphism of this gene for nine known point mutations was studied in a sample of Novosibirsk residents consisting of 109 healthy Caucasians. The frequencies of these mutations did not significantly differ from the frequencies reported for Caucasian populations of other countries. In 79 patients with lung cancer, a region of the NAT2 gene that includes 29.7% of the coding sequence was analyzed for the new mutations by the RFLP analysis. No new mutations were found in this group.
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40
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Nikishina MV, Makarova SI, Akishev AG, Vavilin VA, Degtyarev SK, Lyakhovich VV. Restriction Analysis of N-Acetyltransferase 2 Gene in Caucasian Population of West Siberia. RUSS J GENET+ 2004. [DOI: 10.1023/b:ruge.0000048672.78131.8e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Safronova OG, Vavilin VA, Lyapunova AA, Makarova SI, Lyakhovich VV, Kaznacheeva LF, Manankin NA, Batychko OA, Gavalov SM. Relationship between glutathione S-transferase P1 polymorphism and bronchial asthma and atopic dermatitis. Bull Exp Biol Med 2004; 136:73-5. [PMID: 14534616 DOI: 10.1023/a:1026001216033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2003] [Indexed: 11/12/2022]
Abstract
We determined the prevalence of GSTP1-Ile105 and GSTP1-Val105 alleles in patients with bronchial asthma and atopic dermatitis and healthy children of 2 groups (randomized and nonatopic control). The GSTP1-Ile105/Val105 genotype determines the resistance to atopic dermatitis (odds ratio=0.51; 95% confidence interval: 0.28-0.92; p=0.023). However, both homozygotes are at high risk of developing atopic dermatitis (near-significant differences).
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Affiliation(s)
- O G Safronova
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk. drugsmet@.cyber.ma.nsc.ru
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42
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Abstract
The 6beta-hydroxycortisol/cortisol ratio was measured in 52 children aging 1.1-14.0 years. The maximum increment in this ratio occurred in the age interval of 1.1-2.0 years. During this period, the regression coefficients in the linear (r=0.57; p=0.044) and nonlinear logarithmic models (r=0.56; p=0.049) were similar. At the age of 10-14 years, the examined ratio attained 19.17+/-17.79.
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Affiliation(s)
- V A Vavilin
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk, Russia.
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43
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Vavilin VA, Lokshina LY, Jokela JPY, Rintala JA. Modeling solid waste decomposition. Bioresour Technol 2004; 94:69-81. [PMID: 15081490 DOI: 10.1016/j.biortech.2003.10.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2003] [Revised: 09/30/2003] [Accepted: 10/28/2003] [Indexed: 05/24/2023]
Abstract
The hydrolysis rate coefficients of sorted municipal waste were evaluated from the biochemical methane potential tests using non-linear regression. A distributed mathematical model of anaerobic digestion of rich (food) and lean (non-food) solid wastes with greatly different rates of polymer hydrolysis/acidogenesis was developed to describe the balance between the rates of hydrolysis/acidogenesis and methanogenesis. The model was calibrated using previously published experimental data [Biores. Technol. 52 (1995) 245] obtained upon various initial food waste loadings. Simulations of one- and two-stage digestion systems were carried out. The results showed that initial spatial separation of food waste and inoculum enhances methane production and waste degradation in a one-stage solid-bed digester at high waste loading. A negative effect of vigorously mixing at high waste loading reported in some papers was discussed. It was hypothesized that the initiation methanogenic centers developing in time and expanding in space under minimal mixing conditions might be a key factor for efficient anaerobic conversion of solid waste into methane.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute, Russian Academy of Sciences, Gubkina Street, bd. 3, Moscow 119991, Russian Federation.
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44
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Nikishina MV, Akishev AG, Makarova SI, Vavilin VA, Degtiarev SK, Liakhovich VV. [Use of restriction endonucleases Bst2U I and Acc65 I to detect Kpn I polymorphism of NAT2 gene]. Biomed Khim 2004; 50:269-72. [PMID: 15354537] [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: 04/30/2023]
Abstract
RFLP-analysis was made for 30 human DNA samples. The ability of application of restriction endonucleases Acc65I and Bst2UI to find point mutation C481T in NAT2 gene has been demonstrated for the first time. Variants of these enzymes application are discussed.
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45
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Vavilin VA, Angelidaki I. Anaerobic degradation of solid material: Importance of initiation centers for methanogenesis, mixing intensity, and 2D distributed model. Biotechnol Bioeng 2004; 89:113-22. [PMID: 15540194 DOI: 10.1002/bit.20323] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.1] [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: 11/07/2022]
Abstract
Batch anaerobic codigestion of municipal household solid waste (MHSW) and digested manure in mesophilic conditions was carried out. The different waste-to-biomass ratios and intensity of mixing were studied theoretically and experimentally. The experiments showed that when organic loading was high, intensive mixing resulted in acidification and failure of the process, while low mixing intensity was crucial for successful digestion. However, when loading was low, mixing intensity had no significant effect on the process. We hypothesized that mixing was preventing establishment of methanogenic zones in the reactor space. The methanogenic zones are important to withstand inhibition due to development of acids formed during acidogenesis. The 2D distributed models of symmetrical cylinder reactor are presented based on the hypothesis of the necessity of a minimum size of methanogenic zones that can propagate and establish a good methanogenic environment. The model showed that at high organic loading rate spatial separation of the initial methanogenic centers from active acidogenic areas is the key factor for efficient conversion of solids to methane. The initial level of methanogenic biomass in the initiation centers is a critical factor for the survival of these centers. At low mixing, most of the initiation methanogenic centers survive and expand over the reactor volume. However, at vigorous mixing the initial methanogenic centers are reduced in size, averaged over the reactor volume, and finally dissipate. Using fluorescence in situ hybridization, large irregular cocci of microorganisms were observed in the case with minimal mixing, while in the case with high stirring mainly dead cells were found.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute, Russian Academy of Sciences, Gubkina str. 3, Moscow 119991, Russian Federation
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Liakhovich VV, Vavilin VA, Grishanova AI, Makarova SI, Kovalenko SP. [Pharmacogenetics and modern medicine]. Vestn Ross Akad Med Nauk 2004:40-5. [PMID: 15575401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
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47
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Nikishina MV, Akishev AG, Vavilin VA, Makarova SI, Degtyarev SK, Lyakhovich VV. Restriction Fragments Length Polymorphism in the NAT1 Gene of Europeans in West Siberia. Bull Exp Biol Med 2003; 136:482-4. [PMID: 14968166 DOI: 10.1023/b:bebm.0000017099.51849.93] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Restriction fragment length polymorphism in the NAT1 gene was assayed to reveal 7 mutations (97C>T; 190C>T; 350,351G>C; 402T>C; 752A>T; D(1105); D(1025)) in 74 Europeans from West Siberia. New methods for detecting mutations 350,351G>C, 402T>C, 752A>T, D(1105), and D(1025) were proposed.
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Affiliation(s)
- M V Nikishina
- Institute of Molecular Biology and Biophysics, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk, Russia
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Lokshina LY, Vavilin VA, Salminen E, Rintala J. Modeling of anaerobic degradation of solid slaughterhouse waste: inhibition effects of long-chain fatty acids or ammonia. Appl Biochem Biotechnol 2003; 109:15-32. [PMID: 12794281 DOI: 10.1385/abab:109:1-3:15] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [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: 11/11/2022]
Abstract
The anaerobic bioconversion of solid poultry slaughterhouse wastes was kinetically investigated. The modified version of <METHANE> simulation model was applied for description of experimental data in mesophilic laboratory digester and assays. Additionally, stages of formation and consumption of long chain fatty acids (LCFA) were included in the model. Batch data on volatile solids, ammonium, acetate, butyrate, propionate, LCFA concentrations, pH level, cumulative volume, and methane partial pressure were used for model calibration. As a reference, the model was used to describe digestion of solid sorted household waste. Simulation results showed that an inhibition of polymer hydrolysis by volatile fatty acids and acetogenesis by NH3 or LCFA could be responsible for the complex system dynamics during degradation of lipid- and protein-rich wastes.
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Affiliation(s)
- L Y Lokshina
- Water Problems Institute, Russian Academy of Sciences, Gubkina str. 3, 11991, Moscow, Russia
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Vavilin VA, Rytov SV, Pavlostathis SG, Jokela J, Rintala J. A distributed model of solid waste anaerobic digestion: sensitivity analysis. Water Sci Technol 2003; 48:147-154. [PMID: 14531433] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A distributed model of anaerobic digestion of solid waste was developed to describe the balance between the rates of polymer hydrolysis and methanogenesis during the anaerobic conversion of rich and lean wastes in batch and continuous-flow reactors. Waste, volatile fatty acids (VFAs), methanogenic biomass and sodium concentrations are the model variables. Diffusion and advection of VFAs inhibiting both polymer hydrolysis and methanogenesis were considered. A sensitivity analysis by changing the key model parameter values was carried out. The model simulations showed that the effective distance between the areas of hydrolysis/acidogenesis and methanogenesis is very important. An initial spatial separation of rich waste and inoculum enhances the methane production and waste degradation at high waste loading if relatively low VFA diffusion into the methanogenic area is taking place. When both hydrolysis and methanogenesis are strongly inhibited by high levels of VFA, fluctuations in biomass concentration are thought to be responsible for initiating the expansion of methanogenic area over the reactor space.
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Affiliation(s)
- V A Vavilin
- Water Problems Institute, Russian Academy of Sciences, Gubkina str.3, 119991 Moscow, Russia.
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50
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Vavilin VA, Makarova SI, Liakhovich VV, Gavalov SM. [Polymorphic genes of xenobiotic-metabolizing enzymes associated with bronchial asthma in genetically predisposed children]. Genetika 2002; 38:539-545. [PMID: 12018173] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The frequencies of the CYP1A1 valine allele, homozygous deletions of GSTM1 and GSTT1, and two point mutations of the NAT2 gene, (C481-->T) and S2 (G590-->A), were compared in healthy children and children having bronchial asthma. The S1 mutation was associated with resistance, and all of the other traits, with predisposition to the disease. In families of patients with diseased progenitors and in those with healthy progenitors, the estimates of the asthma risk were similar. In both groups, parameters of the trait association with the disease depended on passive smoking. At passive smoking, a trend to an overrepresentation (high odds ratio, OR) of the GSTM1 null genotype and S2 mutation of the NAT2 gene was observed, whereas the odds ratio of the GSTT1 null genotype decreased, and those of the CYP1A1 and S1 mutation of the NAT2 gene remained unchanged. The highest OR = 36.25 (P < 0.01) was characteristic of the GSTT1 null genotype in nonsmoking hereditary burdened patients. The results obtained suggest an important role of xenobiotic-metabolizing enzymes in development of bronchial asthma.
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Affiliation(s)
- V A Vavilin
- Institute of Molecular Biology and Biophysics, Russian Academy of Medical Sciences, Novosibirsk, 630117 Russia
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