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Blank MO, Egorova OV, Liventsova NV, Liventsov SN, Schmidt OV. Mathematical Model of the Technological Process of Carbothermal Synthesis of Mixed Uranium-Plutonium Nitride Fuel. ATOM ENERGY+ 2021. [DOI: 10.1007/s10512-021-00757-0] [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: 11/28/2022]
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Bragin EY, Shtratnikova VY, Dovbnya DV, Schelkunov MI, Pekov YA, Malakho SG, Egorova OV, Ivashina TV, Sokolov SL, Ashapkin VV, Donova MV. Corrigendum to "Comparative analysis of genes encoding key steroid core oxidation enzymes in fast-growing Mycobacterium spp. strains" [J. Steroid Biochem. Mol. Biol. 138 (2013) 41-53]. J Steroid Biochem Mol Biol 2020; 200:105666. [PMID: 32408066 DOI: 10.1016/j.jsbmb.2020.105666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- E Yu Bragin
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation; G.K. Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
| | - V Yu Shtratnikova
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation.
| | - D V Dovbnya
- G.K. Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
| | - M I Schelkunov
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation; V.A. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation.
| | - Yu A Pekov
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation.
| | - S G Malakho
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation.
| | - O V Egorova
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation.
| | - T V Ivashina
- G.K. Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
| | - S L Sokolov
- G.K. Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
| | - V V Ashapkin
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation; A.N. Belozersky Institute of Physico-Chemical Biology, M.V. Lomonosov Moscow State University, Moscow 119991, Russian Federation.
| | - M V Donova
- G.K. Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
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Egorova OV, Liventsova NV, Liventsov SN, Shmidt OV. Mathematical Model of Cadmium Distillation at the Stage of Pyrochemical Reprocessing of Spent Mixed Uranium-Plutonium Nitride Nuclear Fuel. ATOM ENERGY+ 2019. [DOI: 10.1007/s10512-019-00567-5] [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: 11/29/2022]
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Goryunov AG, Egorova OV, Kozin KA, Liventsov SN, Liventsova NV, Shmidt OV. Optimization and Diagnostics Code for Technological Processes: Radiochemical Production Simulator. ATOM ENERGY+ 2018. [DOI: 10.1007/s10512-018-0417-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ilyushina NA, Egorova OV, Masaltsev GV, Averianova NS. STUDIES OF THE GENOTOXICITY OF TECHNICAL PRODUCTS OF THE BENZOYLCYCLOHEXANE-1,3-DIONE DERIVATIVE PESTICIDE. ACTA ACUST UNITED AC 2018. [DOI: 10.18821/0016-9900-2018-97-6-509-513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Introduction. Currently, a large number of pesticide analogues manufactured past the expiration date of the patent protection of the original active ingredients are imported in the Russian Federation. The toxicological-hygienic examinations based on numerous trials, including mutagenicity (genotoxicity) studies, is necessary to confirm their safety. Material and methods. The study of the genotoxic activity of three technical products of the pesticide active ingredient, a benzoylcyclohexane-1,3-dione derivative, produced in the various factories was carried out. research was performed using the bacterial reverse mutation method (Ames test) and the in vivo mouse bone marrow micronucleus test. Results. Statistically significant and dose-dependent genotoxic effects of the test samples were observed in the strains of Salmonella typhimurium of TA 97, TA 102, TA 100. However, the increase in the number of revertants in the experiment versus the negative control was less than two in all cases, with the exception of strain TA 97. Weak but biologically significant outcomes were found in TA 97 culture (the increase in the number of revertants in comparison to spontaneous level was ≥ 2. In the micronucleus test only two of the three samples produced a statistically significant increase in the incidence of micronucleated polychromatophilic erythrocytes. One of the samples induced the significant genotoxic effect only at the high dose (2000 mg/kg b.w.), and another one (with the lowest active substance content) at all dose levels. In both cases, a linear dose-effect dependence was found. The cytogenetic effects were low, at the level of the upper limit of the laboratory's historical negative control Conclusion. The obtained data indicate that the ability of the tested technical products of the benzoylcyclohexane-1,3-dione derivative to induce the gene and chromosomal damages increases with decreasing concentration of the active ingredient in technical products, probably due to the enhancement of the genotoxic impurity level. Thus, the technical products of analogue pesticides are not always equivalent to the original active substances in terms of their biological activity. That confirms the necessity for toxicological-hygienic testing, in particular genotoxicity assessments of all generic pesticides entering the market.
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Affiliation(s)
- Nataliya A. Ilyushina
- F.F. Erisman Federal Scientifc Center of Hygiene of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
| | - O. V. Egorova
- F.F. Erisman Federal Scientifc Center of Hygiene of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
| | - G. V. Masaltsev
- F.F. Erisman Federal Scientifc Center of Hygiene of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
| | - N. S. Averianova
- F.F. Erisman Federal Scientifc Center of Hygiene of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
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Egorova OV, Fisyunov OI, Kryshtal OA. Effects of Agonists of μ-Opioid Receptors on P-Type Calcium Channels in Rat Purkinje Neurons. NEUROPHYSIOLOGY+ 2015. [DOI: 10.1007/s11062-015-9505-2] [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: 12/18/2022]
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Bragin EY, Shtratnikova VY, Dovbnya DV, Schelkunov MI, Pekov YA, Malakho SG, Egorova OV, Ivashina TV, Sokolov SL, Ashapkin VV, Donova MV. Comparative analysis of genes encoding key steroid core oxidation enzymes in fast-growing Mycobacterium spp. strains. J Steroid Biochem Mol Biol 2013; 138:41-53. [PMID: 23474435 DOI: 10.1016/j.jsbmb.2013.02.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 01/28/2013] [Accepted: 02/24/2013] [Indexed: 11/27/2022]
Abstract
A comparative genome analysis of Mycobacterium spp. VKM Ac-1815D, 1816D and 1817D strains used for efficient production of key steroid intermediates (androst-4-ene-3,17-dione, AD, androsta-1,4-diene-3,17-dione, ADD, 9α-hydroxy androst-4-ene-3,17-dione, 9-OH-AD) from phytosterol has been carried out by deep sequencing. The assembled contig sequences were analyzed for the presence putative genes of steroid catabolism pathways. Since 3-ketosteroid-9α-hydroxylases (KSH) and 3-ketosteroid-Δ(1)-dehydrogenase (Δ(1) KSTD) play key role in steroid core oxidation, special attention was paid to the genes encoding these enzymes. At least three genes of Δ(1) KSTD (kstD), five genes of KSH subunit A (kshA), and one gene of KSH subunit B of 3-ketosteroid-9α-hydroxylases (kshB) have been found in Mycobacterium sp. VKM Ac-1817D. Strains of Mycobacterium spp. VKM Ac-1815D and 1816D were found to possess at least one kstD, one kshB and two kshA genes. The assembled genome sequence of Mycobacterium sp. VKM Ac-1817D differs from those of 1815D and 1816D strains, whereas these last two are nearly identical, differing by 13 single nucleotide substitutions (SNPs). One of these SNPs is located in the coding region of a kstD gene and corresponds to an amino acid substitution Lys (135) in 1816D for Ser (135) in 1815D. The findings may be useful for targeted genetic engineering of the biocatalysts for biotechnological application.
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Key Words
- 2,3-dehydroxyphenyl dioxygenase
- 2-enoyl acyl-CoA hydratase
- 2-hydroxypenta-2,4-dienoate hydratase
- 3,4-dihydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione 4,5-dioxygenase
- 3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase
- 3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase subunit
- 3-ketosteroid-9α-hydroxylase
- 3-ketosteroid-Δ(1)-dehydrogenase
- 3β-hydroxysteroid-dehydrogenase
- 4,5:9,10-diseco-3-hydroxy-5,9,17-trioxoandrosta-1(10),2-diene-4-oate hydrolase
- 4-hydroxy-2-oxovalerate aldolase
- 9-OH-AD
- 9α-hydroxy androst-4-ene-3,17-dione
- AD
- ADD
- Androst-1,4-diene-3,17-dione
- Androst-4-ene-3,17-dione
- BWA
- Broadband-Wheeler Aligner
- CTAB
- ChoX
- ChoX(D,E)
- EchA19
- FAD
- FadA5
- FadD17
- FadD19
- FadE26
- FadE27
- FadE28
- Genome sequencing
- HSD
- HTH-type transcriptional repressor
- HsaA
- HsaAB
- HsaB
- HsaC
- HsaD
- HsaE
- HsaF
- HsaG
- Hsd4A
- Hsd4B
- KSH
- KshA
- KshB
- KstR
- KstR2
- Ltp2
- Ltp3
- Ltp4
- Mycobacterium
- ORFs
- PWM
- Phytosterol
- SNP
- Steroid bioconversion
- TesB
- YrbE4A
- YrbE4B
- acetaldehyde dehydrogenase
- acetyl-CoA acetyltransferase
- acyl-CoA dehydrogenase
- acyl-CoA synthetase
- acyl-CoA thioesterase II
- androst-4-ene-3,17-dione
- androsta-1,4-diene-3,17-dione
- base pair
- bp
- cetyl trimethyl ammonium bromide
- cholesterol oxidase
- enoyl-CoA hydratase
- flavin adenine dinucleotide
- hydroxysteroid dehydrogenase
- integral membrane protein
- lipid transfer protein 4 (keto acyl-CoA thiolase)
- lipid-transfer protein 2
- lipid-transfer protein 3 (acetyl-CoA acetyltransferase)
- open reading frames
- position weight matrix
- single nucleotide substitution
- subunit A of 3-ketosteroid-9α-hydroxylase
- subunit B of 3-ketosteroid-9α-hydroxylases
- Δ(1) KSTD
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Affiliation(s)
- E Yu Bragin
- Center of Innovations and Technologies "Biological Active Compounds and Their Applications", Russian Academy of Sciences, Moscow 119991, Russian Federation; G.K.Skryabin Institute of Biochemistry & Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation.
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Marova AA, Oksanich AS, Kaira AN, Meskina ER, Medvedeva EA, Ivanova OE, Lukashev AN, Kyuregian KK, Kalinkina MA, Egorova OV, Zverev VV, Faĭzuloev EV. [Experience of application of multiplex qPCR for differential diagnostics of intestinal viral infections]. Zh Mikrobiol Epidemiol Immunobiol 2012:39-45. [PMID: 23297630] [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: 06/01/2023]
Abstract
AIM Evaluate the effectiveness of multiplex reverse transcription (RT) and polymerase chain reaction with fluorescence detection in real time mode (qPCR) methods for differential detection of 11 groups of intestine viruses (adenoviruses, enteroviruses, polioviruses, hepatitis A and E viruses, group A and C rotaviruses, orthoreoviruses, noroviruses, sapoviruses and astroviruses) in various biological samples. MATERIALS AND METHODS Panels of virus isolates and clinical samples characterized by reference methods were used to evaluate sensitivity of detection of various intestine viruses. Nucleic acids were isolated from study samples and multiplex RT and qPCR were carried out. RESULTS Sensitivity of laboratory reagent kit (LRK) when compared with results obtained from reference methods was 100% for rotavirus A, adenovirus, enterovirus and norovirus, 88.9% for hepatitis E virus and 92.3% for hepatitis A virus, and diagnostic specificity - 99.4%. During analysis of 697 clinical samples from patients with acute intestine infection symptoms nucleic acids of various intestine viruses were isolated in 71.7%. CONCLUSION Multiplex qRT-PCR was shown as an effective method of etiologic diagnostics of an intestine viral infection. Use of LRK was demonstrated to establish etiology of intestine diseases in 63 - 72% and in children with watery diarrhea - in approximately 90% of cases.
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Donova MV, Nikolaeva VM, Egorova OV. Enzymes Involved in Modification of the Steroid Nucleus of Industrial Mycobacterial Strains: Isolation, Functions, and Properties. APPL BIOCHEM MICRO+ 2005. [DOI: 10.1007/s10438-005-0080-y] [Citation(s) in RCA: 4] [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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Donova MV, Nikolaeva VM, Egorova OV. [Enzymes involved in modification of the steroid nucleus of industrial mycobacterial strains: isolation, functions, and properties]. Prikl Biokhim Mikrobiol 2005; 41:514-20. [PMID: 16240648] [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: 05/04/2023]
Abstract
The key enzymes involved in modification of the steroid nucleus of sterol-transforming mycobacteria--3beta-hydroxysteroid oxidase (3-OH-SO, EC 1.13.1.2) and 17beta-hydroxysteroid dehydrogenase (17-OH-SDH, EC 1.1.1)--were isolated and characterized. It is shown that 3-OH-SO is a multifunctional enzyme catalyzing oxidation of the 3beta-OH group, delta5 --> delta4 isomerization, and 6-hydroxylation. Two forms of intracellular 17-OH-SDH that catalyze redox reactions at C17 were found, and their properties were determined. The presence of an extracellular 17-OH-SDH in Mycobacterium spp. (VKM Ac-1815 D and Et1) was demonstrated for the first time.
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Egorova OV, Nikolayeva VM, Suzina NE, Donova MV. Localization of 17beta-hydroxysteroid dehydrogenase in Mycobacterium sp. VKM Ac-1815D mutant strain. J Steroid Biochem Mol Biol 2005; 94:519-25. [PMID: 15876416 DOI: 10.1016/j.jsbmb.2004.12.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2004] [Accepted: 12/08/2004] [Indexed: 11/20/2022]
Abstract
The localization of mycobacterial 17beta-hydroxysteroid dehydrogenase (17beta-OH SDH) was studied using cell fractionation and cytochemical investigation. Mycobacterium sp. Et1 mutant strain derived from Mycobacterium sp. VKM Ac-1815D and characterized by increased 17beta-OH SDH activity was used as a model organism. Subcellular distribution study showed both soluble and membrane-bound forms of mycobacterial 17beta-hydroxysteroid dehydrogenase. The cytochemical method based on a copper ferrocyanide procedure followed by electron microscopic visualization was applied in order to investigate the intracellular localization of bacterial 17beta-OH SDH in more detail. The enzyme was found to be located in the peripheral cytoplasmic zone adjoining the cytoplasmic membrane (CM). 17beta-OH SDH was loosely membrane bound and easily released into the environment under the cell integrity failure.
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Affiliation(s)
- O V Egorova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia.
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Nikolayeva VM, Egorova OV, Dovbnya DV, Donova MV. Extracellular 3beta-hydroxysteroid oxidase of Mycobacterium vaccae VKM Ac-1815D. J Steroid Biochem Mol Biol 2004; 91:79-85. [PMID: 15261310 DOI: 10.1016/j.jsbmb.2004.01.009] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2003] [Accepted: 01/20/2004] [Indexed: 10/26/2022]
Abstract
Extracellular 3beta-hydroxysteroid oxidase (SO) has been isolated from cell-free cultivation broth at the growth of Mycobacterium vaccae VKM Ac-1815D on glycerol-mineral medium in the presence of sitosterol. The enzyme is responsible for the transformation of 3beta-hydroxy-5-ene- to 3-keto-4-ene-moiety of steroids including dehydrogenation of 3beta-hydroxy function followed by delta5-->delta4 isomerization. 6-Hydroxy-4-sitosten-3-one and 6-hydroxy-4-androsten-3,17-dione were revealed among the metabolites at the incubation of the enzyme preparations with sitosterol and dehydroepiandrosterone (DHEA), respectively. The enzyme was strongly NADH or NADPH dependent. SO has been purified over 300-fold using cultivation broth concentration on hollow fibers followed by fractionation by ammonium sulphate, column chromatography on DEAE-Toyopearl, hydroxyapatite Bio-Gel HTP and double gel-filtration on Bio-Gel A 0.5 M. SDS-electrophoresis gave a molecular mass estimate of 62 +/- 4 kDa. The purified SO obeyed Michaelis-Menten kinetics, double reciprocal plots kinetics revealed Km value towards DHEA 5 x 10(-4) M. Along with SO activity, 17-hydroxysteroid dehydrogenase (17-OH SDH) and 3-ketosteroid-1(2)-dehydrogenase (1(2)-SDH) activities were detected in cell-free cultivation broth. The extracellular steroid transforming activities of C-17-ketosteroid producing mycobacteria were hitherto unreported.
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Affiliation(s)
- V M Nikolayeva
- Laboratory of Microbial Transformation of Organic Compounds, GK Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Moscow Region
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Egorova OV, Anokhin KV. Experimental analysis of the processes of systems genesis: expression of the c-fos gene in the chick brain during treatments inducing the development of the species-specific results-of-action acceptor. Neurosci Behav Physiol 2003; 33:209-16. [PMID: 12762586 DOI: 10.1023/a:1022186911789] [Citation(s) in RCA: 17] [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] [Indexed: 11/12/2022]
Abstract
The aim of the present work was to identify which parts of the chick brain are activated during treatments inducing the development of the preference to follow a species-specific object (a stuffed chick). Expression of the gene for the transcription factor c-fos was used as the molecular marker for neuron activation. Day-old chicks lacking visual experience were placed for 90 min in a freely rotating squirrel wheel or were subjected to stimulation with a loud noise for 180 min. The animals' preference was tested 24 h after stimulation ended. Both types of stimulation induced the formation of a marked preference to follow the "natural" object in the chicks. c-fos expression was analyzed in sections from the brains of chicks stimulated for 45 min. Increases in the quantity of c-fos mRNA were seen after each type of stimulation in the medial part of the caudal neostriatum. In addition, stimulation in the squirrel wheel was accompanied by high levels of c-fos expression in the paraolfactory lobes, while sound stimulation gave high levels of c-fos expression in the ventral and caudal parts of the archistriatum. These structures of the chick brain are of great interest for studies of the cellular and molecular mechanisms of the formation of the species-specific results-of-action acceptor in the mother-following functional system.
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Affiliation(s)
- O V Egorova
- Department of Systems Genetics, P. K. Anokhin Science Research Institute of Normal Physiology, Moscow
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Abstract
Whole cells and crude extract of Mycobacterium sp. VKM Ac-1815D mutant strain Et1 were shown to carry out 17beta-reduction, 17beta-dehydrogenation and 1(2)-reduction of 3-keto-C(19)-steroids. Two 17-hydroxy steroid dehydrogenases (17-OH SDH) were partially purified from the strain by ammonium sulfate fractionation, ion-exchange chromatography on DEAE-sephacel and gel-filtration on Bio-Gel A. The enzymes differed in chromatographic properties and specific activities. One enzyme--17-OH SDH (2) (tetramer, M(r) approximately 210,000) was found to be responsible for bi-directional reduction-oxidation of steroids at C 17, whereas the other one--17-OH SDH (1) (monomer, M(r) approximately 68,000) specifically catalysed 17beta-dehydrogenation of 17-hydroxysteroids (testosterone and 1(2)-dehydro testosterone). The 17beta-reduction of 1-ene-17-ketosteroids was accompanied by 1(2)-reduction. A role of 1-ene-reductase as a steroid-binding protein associated with 17-OH SDH (2) in Mycobacterium sp. is discussed.
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Affiliation(s)
- O V Egorova
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino State University, pr. Nauki 5, Pushchino, 142290 Moscow Region, Russia.
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Egorova OV, Anokhin KV. [Experimental analysis of systemogenesis process: c-fos gene expression in chicken brain during stimulation of development of a species-specific acceptor of action response]. Zh Vyssh Nerv Deiat Im I P Pavlova 2002; 52:63-70. [PMID: 11899669] [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: 02/24/2023]
Abstract
The aim of this study was to localize the areas of the chick brain involved in the development of filial predisposition to follow conspecifics. Expression of the immediate early gene c-fos mRNA was used to map such structures. One-day-old chicks were stimulated (primed) by placing for 90 min into a running wheel in darkness or by exposure to a loud nonspecific sound for 180 min. Brains of a part of these chicks taken 45 min after the beginning of priming were used for c-fos expression study. The remaining chicks were tested 24 hours after priming by simultaneous presentation of a "natural" object (stuffed fowl) and an "artifical" object (rotating red cube). Primed chicks demonstrated significant preference for the natural object as compared to untreated control chicks. In the forebrain of chicks primed both in the running wheel and by acoustic stimulation a significant c-fos expression was found in the medial part of the caudal neostriatum. Priming in the running wheel additionally induced c-fos expression in the lobus parolfactorius, while priming by acoustic stimulation produced high c-fos expression in the archistriatum. Both these areas are known to be involved in filial imprinting. The results suggest that these structures can be also involved in the development of filial predisposition in chicks.
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Affiliation(s)
- O V Egorova
- Anokhin Institute of Normal Physiology, Russian Academy of Medical Sciences, Moscow
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Egorova OV. [Solaritis]. Med Sestra 1968; 27:13-6. [PMID: 5189142] [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: 01/14/2023]
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