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Pop CE, Deák G, Maria C, Ghiță G, Ivanov AA, Fendrihan S, Mihăilescu DF, Mernea M. Ideonella sakaiensis Can Metabolize Bisphenol A as a Carbon Source. Microorganisms 2023; 11:2891. [PMID: 38138035 PMCID: PMC10745525 DOI: 10.3390/microorganisms11122891] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/26/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Bisphenol A and its analogues represent a significant environmental and public health hazard, particularly affecting the endocrine systems of children and newborns. Due to the growing need for non-pathogenic biodegradation microbial agents as environmentally friendly and cost-effective solutions to eliminate endocrine disruptors, this study aimed to investigate the degradation of bisphenol A by Ideonella sakaiensis, based on its currently understood unique enzymatic machinery that is already well known for degrading polyethylene terephthalate. The present study provides novel insights into the metabolic competence and growth particularities of I. sakaiensis. The growth of I. sakaiensis exposed to bisphenol A exceeded that in the control conditions, starting with 72 h in a 70% nutrient-rich medium and starting with 48 h in a 100% nutrient-rich medium. Computational modeling showed that bisphenol A, as well as its analogue bisphenol S, are possible substrates of PETase and MHETase. The use of bisphenol A as a carbon and energy source through a pure I. sakaiensis culture expands the known substrate spectra and the species' potential as a new candidate for bisphenol A bioremediation processes.
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Affiliation(s)
- Cristian-Emilian Pop
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independenței Str., 050095 Bucharest, Romania; (D.F.M.); (M.M.)
- Non-Governmental Research Organization Biologic, 14 Schitului Str., 032044 Bucharest, Romania
| | - György Deák
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
| | - Cristina Maria
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
| | - Gina Ghiță
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
| | - Alexandru Anton Ivanov
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
| | - Sergiu Fendrihan
- Department of Natural and Technological Hazards, National Institute for Research and Development in Environmental Protection, 294 Splaiul Independenței Str., 060031 Bucharest, Romania (S.F.)
- Non-Governmental Research Organization Biologic, 14 Schitului Str., 032044 Bucharest, Romania
| | - Dan Florin Mihăilescu
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independenței Str., 050095 Bucharest, Romania; (D.F.M.); (M.M.)
- Biometric Psychiatric Genetics Research Unit, Alexandru Obregia Psychiatric Hospital, Șoseaua Berceni 10 Str., 041914 Bucharest, Romania
| | - Maria Mernea
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, 91–95 Splaiul Independenței Str., 050095 Bucharest, Romania; (D.F.M.); (M.M.)
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Latyshev AV, Danilova TI, Kuznetsova AV, Popova OP, Butorina NN, Drobyshev AY, Ivanov AA. Endogenous Regeneration of Alveolar Bone by Decellularized Tooth Matrix. Bull Exp Biol Med 2023; 175:592-599. [PMID: 37768453 DOI: 10.1007/s10517-023-05908-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Indexed: 09/29/2023]
Abstract
The efficiency of bone tissue regeneration by decellularized tooth matrix, demineralized tooth matrix, and commercial xenograft Bio-Oss Spongiosa was compared on the model of a critical-size circular defect in the alveolar bone of the upper jaw of adult Wistar rats. The defect healing dynamics was assessed using histological, histomorphometrical, and immunohistochemical methods on days 30 and 60. In contrast to demineralized matrix and commercial xenograft, decellularized matrix induces the formation of the new bone tissue by day 60. Decellularized matrix can be considered as a biomaterial for cell-free tissue engineering for alveolar bone restoration in dentistry and maxillofacial surgery.
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Affiliation(s)
- A V Latyshev
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia
| | - T I Danilova
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A V Kuznetsova
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia
- N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia
| | - O P Popova
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia
| | - N N Butorina
- N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia
| | - A Yu Drobyshev
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A A Ivanov
- A. I. Yevdokimov Moscow State University of Medicine and Dentistry c caйтa, Ministry of Health of the Russian Federation, Moscow, Russia.
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3
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Oskorbin IP, Ivanov AA, Smertina MA, Demidova IA, Boyarskikh UA, Kechin AA, Bakharev SY, Samuilenkova OV, Vihlyanov IV, Kushlinskii NE, Filipenko ML. Identification of Chimeric NTRK3 Genes in Papillary Thyroid Cancer Cells by Analyzing the Imbalance of the Expression of 5' and 3' mRNA Fragments. Bull Exp Biol Med 2023:10.1007/s10517-023-05842-x. [PMID: 37477743 DOI: 10.1007/s10517-023-05842-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Indexed: 07/22/2023]
Abstract
The standard for detecting chimeric genes of neurotrophic receptor tyrosine kinases (NTRK) is next generation sequencing (NGS). However, this analysis is expensive and takes several days. As a rapid screening method for the detection of NTRK3-dependent papillary thyroid cancer, an analysis of the expression imbalance between 5' and 3' NTRK3 mRNA fragments was used (5'/3' RT-PCR). The reference method for detection of NTRK3 rearrangements was fluorescent in situ hybridization (FISH), and the most frequent rearrangements in papillary thyroid cancer were tested using reverse transcription PCR (RT-PCR). Using 5'/3' RT-PCR, 18 samples of papillary thyroid cancer carrying chimeric transcripts of NTRK3 mRNA were detected. The sensitivity of the developed technique was 88.9% and specificity was 99.3%. Thus, a fast and cost-effective method of screening samples of papillary thyroid cancer in paraffin blocks is proposed with acceptable sensitivity and specificity.
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Affiliation(s)
- I P Oskorbin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A A Ivanov
- Altai Regional Oncological Center, Barnaul, Russia
| | - M A Smertina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - I A Demidova
- Moscow City Oncology Hospital No. 62, Moscow Healthcare Department, Moscow, Russia
| | - U A Boyarskikh
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A A Kechin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | | | | | | | - N E Kushlinskii
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M L Filipenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
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4
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Kechin AA, Koryukov MA, Smertina MA, Borobova VS, Oscorbin IP, Ivanov AA, Bakharev SY, Boyarskikh UA, Kushlinskii NE, Filipenko ML. Differences in Transcriptomic Profiles of Brain and Thyroid Tumors with NTRK Gene Rearrangement. Bull Exp Biol Med 2023:10.1007/s10517-023-05815-0. [PMID: 37335445 DOI: 10.1007/s10517-023-05815-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Indexed: 06/21/2023]
Abstract
For tumors with chimeric NTRK genes, entrectinib and larotrectinib can be prescribed regardless of tumor localization. We compared changes in the transcriptional activity of genes in brain tumors (BT) and thyroid cancer (TC) with rearrangement (NTRK+) and without rearrangement (NTRK-) of the NTRK genes using The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. We revealed an increase in the transcription of the JUN gene in NTRK+ samples in comparison with NTRK- samples: by 1.6 times for BT (p=0.239) and by 2.5 times for TC (p=0.003). The transcription of eight HOX genes in NTRK+ BT samples was also increased (by 85-725 times, p<0.05) in comparison with NTRK-. In NTRK+ TC samples, the level of miR-31 and miR-542 was statistically significantly higher (by 3 and 2.5 times, respectively) than in NTRK-samples. For the NTRK+ BT samples, the levels of miR-10b, miR-182, and miR-21 more than 5-fold surpassed the corresponding values in NTRK-samples (p<0.05). These findings reflect differences in activation of gene transcription resulting from NTRK gene rearrangement in BT and TC.
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Affiliation(s)
- A A Kechin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
- Novosibirsk National Research State University, Novosibirsk, Russia.
| | - M A Koryukov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
- Novosibirsk National Research State University, Novosibirsk, Russia
| | - M A Smertina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - V S Borobova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
- Novosibirsk National Research State University, Novosibirsk, Russia
| | - I P Oscorbin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A A Ivanov
- Altai Regional Oncological Center, Barnaul, Russia
| | | | - U A Boyarskikh
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - N E Kushlinskii
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M L Filipenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
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5
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Ivanov AA, Bakarev MA, Lushnikova EL. Histological Variants of Papillary Thyroid Cancer in Relation to Clinical and Morphological Parameters and Prognosis. Bull Exp Biol Med 2023; 174:647-652. [PMID: 37043067 DOI: 10.1007/s10517-023-05762-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Indexed: 04/13/2023]
Abstract
The correlation of histological features of papillary thyroid cancer with clinical and morphological prognostic factors and cause-specific mortality was analyzed in a case-control study within a cohort of patients from the Altai Regional Oncology Center (25 cases with lethal outcome and 64 follow-up controls). Significant variability was revealed in the histological structure of papillary thyroid cancer with the prevalence of classic (62%) and less frequent follicular (19%), tall cell (8%), and solid (7%) variants. In comparison with the classic variant, the solid variant was more often associated with male sex and large tumor size; follicular and tall cell variant was associated with more frequent metastases to regional lymph nodes; follicular and solid variants were associated with an increased proportion of cases with disease stages III-IV. The main differences reflecting the effect of histological factor on the disease outcome were associated with the solid variant of papillary thyroid cancer that was detected in 21% of lethal cases and only in 2% of control subjects. The detection of this variant can be of importance as an additional prognostic factor of the postoperative survival in papillary thyroid cancer.
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Affiliation(s)
- A A Ivanov
- Federal Research Center of Fundamental and Translational Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
- Altai Regional Oncological Center, Barnaul, Russia
| | - M A Bakarev
- Federal Research Center of Fundamental and Translational Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
| | - E L Lushnikova
- Federal Research Center of Fundamental and Translational Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
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6
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Blokhina TM, Ivanov AA, Vorobyeva NY, Yashkina EI, Nikitenko OV, Bychkova TM, Molokanov AG, Timoshenko GN, Bushmanov AY, Samoilov AS, Osipov AN. DNA Damage in Splenocytes of Mice Exposed to Secondary Radiation Created by 650 MeV Protons Bombarding a Concrete Shielding Barrier. Bull Exp Biol Med 2022; 174:194-198. [PMID: 36600036 DOI: 10.1007/s10517-023-05672-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 01/06/2023]
Abstract
The proportion of splenocytes with a high level of DNA double-strand breaks was determined in mice exposed to primary and secondary radiation created by bombarding of a concrete barrier (thickness 20, 40, and 80 cm) by 650 MeV protons. The proportion of splenocytes with a high level of DNA double-strand breaks was assessed by flow cytometric analysis of γH2AX+ and TUNEL+ cells. It is shown that concrete barrier can significantly reduce primary proton radiation; the severity of negative biological effects in mice irradiated in the center of the proton beam decreased with increasing the thickness of this barrier. However, the spectrum of secondary radiation changes significantly with increasing the barrier thickness from 20 to 80 cm and the distance from central axis of the beam from 0 to 20 cm, and the proportion of the neutron component increases, which also causes negative biological effects manifesting in a significant (p<0.05) increase in the percentage of splenocytes with a high level of DNA damage in mice irradiated at a distance of 20 cm from the center of the proton beam and receiving relatively low doses (0.10-0.17 Gy).
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Affiliation(s)
- T M Blokhina
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,N. N. Se-menov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - A A Ivanov
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,Institute of Biomedical Problems, State Research Center, Russian Academy of Sciences, Moscow, Russia.,United Institute of Nuclear Research, Dubna, Russia
| | - N Yu Vorobyeva
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,N. N. Se-menov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - E I Yashkina
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,N. N. Se-menov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - O V Nikitenko
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,Institute of Biomedical Problems, State Research Center, Russian Academy of Sciences, Moscow, Russia
| | - T M Bychkova
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia.,Institute of Biomedical Problems, State Research Center, Russian Academy of Sciences, Moscow, Russia
| | | | | | - A Yu Bushmanov
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - A S Samoilov
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - A N Osipov
- A. I. Burnasyan Federal Medical Biophysical Center, Federal Medical-Biological Agency of Russia, Moscow, Russia. .,N. N. Se-menov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Moscow, Russia.
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7
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Toropova LV, Ivanov AA, Osipov SI, Yang Y, Makoveeva EV, Alexandrov DV. Solidification of ternary melts with a two-phase layer. J Phys Condens Matter 2022; 34:383002. [PMID: 35820411 DOI: 10.1088/1361-648x/ac8090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
This review is concerned with the nonstationary solidification of three-component systems in the presence of two moving phase transition regions-the main (primary) and cotectic layers. A non-linear moving boundary problem has been developed and its analytical solutions have been defined. Namely, the temperature and impurity concentration distributions were determined, the solid phase fractions in the phase transition regions and the laws of motion of their boundaries were found. It was shown that variations in the initial impurity concentration affect significantly the ratio between the lengths of the two-phase layers. A non-linear liquidus surface equation is theoretically taken into account as well.
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Affiliation(s)
- L V Toropova
- Laboratory of Mathematical Modeling of Physical and Chemical Processes in Multiphase Media, Department of Theoretical and Mathematical Physics, Ural Federal University, Ekaterinburg 620000, Russia
- Otto-Schott-Institut für Materialforschung, Friedrich-Schiller-Universität-Jena, Jena 07743, Germany
| | - A A Ivanov
- Laboratory of Multi-Scale Mathematical Modeling, Department of Theoretical and Mathematical Physics, Ural Federal University, Ekaterinburg 620000, Russia
| | - S I Osipov
- Institute of Natural Sciences and Mathematics, Ural Federal University, Lenin Ave., 51, Ekaterinburg 620000, Russia
| | - Y Yang
- Key Laboratory of Polar Materials and Devices and Physics Department, East China Normal University, Shanghai 200241, People's Republic of China
| | - E V Makoveeva
- Laboratory of Multi-Scale Mathematical Modeling, Department of Theoretical and Mathematical Physics, Ural Federal University, Ekaterinburg 620000, Russia
| | - D V Alexandrov
- Laboratory of Multi-Scale Mathematical Modeling, Department of Theoretical and Mathematical Physics, Ural Federal University, Ekaterinburg 620000, Russia
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8
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Kechin AA, Ivanov AA, Kel AE, Kalmykov AS, Oskorbin IP, Boyarskikh UA, Kharpov EA, Bakharev SY, Oskina NA, Samuilenkova OV, Vikhlyanov IV, Kushlinskii NE, Filipenko ML. Prediction of EVT6-NTRK3-Dependent Papillary Thyroid Cancer Using Minor Expression Profile. Bull Exp Biol Med 2022; 173:252-256. [PMID: 35737155 DOI: 10.1007/s10517-022-05528-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Indexed: 10/17/2022]
Abstract
Solid tumors resulting from oncogenic stimulation of neurotrophin receptors (TRK) by chimeric proteins are a group of rare tumors of various localization that respond to therapy with targeted drugs entrectinib and larotrectinib. The standard method for detecting chimeric TRK genes in tumor samples today is considered to be next generation sequencing with the determination of the prime structure of the chimeric transcripts. We hypothesized that expression of the chimeric tyrosine kinase proteins in tumors can determine the specific transcriptomic profile of tumor cells. We detected differentially expressed genes allowing distinguishing between TRK-dependent tumors papillary thyroid cancer (TC) from other molecular variants of tumors of this type. Using PCR with reverse transcription (RT-PCR), we identified 7 samples of papillary TC carrying a EVT6-NTRK3 rearrangement (7/215, 3.26%). Using machine learning and the data extracted from TCGA, we developed of a recognition function for predicting the presence of rearrangement in NTRK genes based on the expression of 10 key genes: AUTS2, DTNA, ERBB4, HDAC1, IGF1, KDR, NTRK1, PASK, PPP2R5B, and PRSS1. The recognition function was used to analyze the expression data of the above genes in 7 TRK-dependent and 10 TRK-independent thyroid tumors obtained by RT-PCR. On the test samples from TCGA, the sensitivity was 72.7%, the specificity - 99.6%. On our independent validation samples tested by RT-PCR, sensitivity was 100%, specificity - 70%. We proposed an mRNA profile of ten genes that can classify TC in relation to the presence of driver NTRK-chimeric TRK genes with acceptable sensitivity and specificity.
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Affiliation(s)
- A A Kechin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A A Ivanov
- Altay Regional Oncological Center, Barnaul, Russia
| | - A E Kel
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | | | - I P Oskorbin
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - U A Boyarskikh
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E A Kharpov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | | | - N A Oskina
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | | | | | - N E Kushlinskii
- N. N. Blokhin National Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - M L Filipenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
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Abstract
The novel molecular subtype of breast cancer (BC), named "claudin-low", was described in 2007. It was characterized by the consistently low expression of genes involved in the formation of epithelial tight junctions in combination with the high activation of genes associated with the epithelial-to-mesenchymal transition, as well as tumor stem cell markers. The similar claudin- low subtype was later identified at the transcriptional level in bladder cancer, gastric cancer, and serous ovarian cancer. However, only in relation to BC, attempts were made to create a surrogate panel for immunohistochemical identification of this subtype in a manner like the intrinsic molecular BC subtypes identified using three main markers, such as ER, PR, and HER-2. At the same time, the ambiguity in the expression of claudins among the subtypes of BC, which is defined by various authors at the immunohistochemical level, as well as the absence of both the confirmed set of immunohistochemical criteria and a unified approach to their assessment, complicate these efforts. The purpose of the review is to show that the immunohistochemical identification of claudin-low subtype of BC is a separate problem that has significant limitations, needs standardization and has not yet reached diagnostic value.
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Affiliation(s)
- O P Popova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Health of Russia, Moscow, Russia
- Treatment and Rehabilitation Center of the Ministry of Health of Russia, Moscow, Russia
| | - A V Kuznetsova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Health of Russia, Moscow, Russia
- N.K. Koltsov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow, Russia
| | - S Yu Bogomazova
- Treatment and Rehabilitation Center of the Ministry of Health of Russia, Moscow, Russia
| | - A A Ivanov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Health of Russia, Moscow, Russia
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10
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Kuznetsova AV, Popova OP, Astakhov DA, Ivanov YV, Panchenkov DN, Ivanov AA. [Epithelial-stromal interactions in pancreatic adenocarcinoma: the role of stroma in disease progression]. Arkh Patol 2022; 84:65-70. [PMID: 36178225 DOI: 10.17116/patol20228405165] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most common and difficult to treat form of pancreas cancer. PDAC and other solid cancers contain both tumor cells and normal connective tissue cells called stromal cells, which are responsible for the excess production of extracellular matrix. It is known that in more than 90% of PDAC tumors and in many other types of cancer, mutations of the KRAS gene are observed, the reciprocal signaling of which has been shown between tumor and stromal cells in vitro. Pancreatic stromal stellate cells are considered precursors of activated or tumor-associated fibroblasts (CAFs), which are an increasing population of cells that proliferate in situ or are recruited into the tumor. CAFs are a heterogeneous population of stromal fibroblasts with different molecular profiles that change during tumorigenesis. Both immunosuppressive and immunosuppressive subsets of CAFs can coexist in the stroma of a single tumor. Based on the heterogeneity of the intertumor stroma, attempts are being made to classify PDAC and predict the course of the disease.
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Affiliation(s)
- A V Kuznetsova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
- Koltzov Institute of Developmental Biology, Moscow, Russia
| | - O P Popova
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - D A Astakhov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Y V Ivanov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - D N Panchenkov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - A A Ivanov
- A.I. Evdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
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11
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Petrov AE, Rozhchenko LV, Ivanov AA, Bobinov VV, Henkes H. [The first experience of endovascular treatment of chronic subdural hematomas with non-adhesive embolization materials of various viscosities: Squid 12 and 18]. Zh Vopr Neirokhir Im N N Burdenko 2021; 85:80-87. [PMID: 34714007 DOI: 10.17116/neiro20218505180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chronic subdural hematomas (CSH) usually require surgical evacuation via a burr hole or craniotomy. Certain incidence of recurrent postoperative CSH is known. Middle meningeal artery (MMA) embolization has been described as an alternative surgery for new or recurrent CSH or as a preventive measure to reduce the risk of postoperative recurrence. The authors report successful MMA embolization with 2 non-adhesive embolic agents of various viscosities (SQUID 12 and SQUID 18, Balt USA, Irvine, CA, USA) for recurrent postoperative CSH in a 44-year-old woman.
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Affiliation(s)
- A E Petrov
- Polenov Neurosurgery Institute, St. Petersburg, Russia
| | | | - A A Ivanov
- Polenov Neurosurgery Institute, St. Petersburg, Russia
| | - V V Bobinov
- Polenov Neurosurgery Institute, St. Petersburg, Russia
| | - H Henkes
- Neuroradiological Clinic - Klinikum Stuttgart, Stuttgart, Germany
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12
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Mil'to IV, Ivanova VV, Shevtsova NM, Serebryakova ON, Ivanov AA, Gereng EA, Takhauov RM, Sukhodolo IV. Rat Blood Leukocytes after Intravenous Injection of Magnetoliposomes on the Basis of Nanomagnetite. Bull Exp Biol Med 2021; 171:774-777. [PMID: 34705182 DOI: 10.1007/s10517-021-05314-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Indexed: 11/25/2022]
Abstract
The structure of blood neutrophils, eosinophils, monocytes, and lymphocytes and differential white blood count in adult rats were studied over 120 days after a single intravenous injection of magnetoliposomes based on nanomagnetite. Magnetoliposomes had no effect on the structure of neutrophils, eosinophils, monocytes, and lymphocytes. At the same time, injection of a suspension of magnetoliposomes based on magnetite nanoparticles led to a decrease in lymphocyte count and an increase in the count of monocytes and band and segmented neutrophils in the blood. These changes were transient and the parameters returned to normal by day 40-60 after injection.
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Affiliation(s)
- I V Mil'to
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia. .,Department of Molecular and Cellular Radiology, Seversk Biophysical Research Center, Federal Medical-Biological Agency, Seversk, Russia.
| | - V V Ivanova
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - N M Shevtsova
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - O N Serebryakova
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - A A Ivanov
- Common Use Center "Physico-Сhemical Analysis Methods", National Research Tomsk Polytechnic University, Tomsk, Russia
| | - E A Gereng
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - R M Takhauov
- Department of Molecular and Cellular Radiology, Seversk Biophysical Research Center, Federal Medical-Biological Agency, Seversk, Russia
| | - I V Sukhodolo
- Department of Morphology and General Pathology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
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13
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Lanin AA, Chebotarev AS, Kelmanson IV, Pochechuev MS, Fetisova ES, Bilan DS, Shevchenko EK, Ivanov AA, Fedotov AB, Belousov VV, Zheltikov AM. Single-beam multimodal nonlinear-optical imaging of structurally complex events in cell-cycle dynamics. J Phys Photonics 2021. [DOI: 10.1088/2515-7647/ac159a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
We demonstrate a multimodal nonlinear-optical imaging that combines second- and third-harmonic generation (SHG and THG) with three-photon-excited fluorescence (3PEF) as a means to resolve fine details of the cell structure and trace its transformations throughout structurally complex episodes of cell-cycle dynamics, including the key stages and signatures in cell division. When zoomed in on cell mitosis, this technique enables a high-contrast multimodal imaging of intra- and extracellular signatures of cell division, detecting, via a multiplex, 3PEF/SHG/THG readout, a remarkable diversity of shapes, sizes, and symmetries in a truly single-beam setting, with no need for beam refocusing or field-waveform re-adjustment.
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14
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Pochechuev MS, Lanin AA, Kelmanson IV, Chebotarev AS, Fetisova ES, Bilan DS, Shevchenko EK, Ivanov AA, Fedotov AB, Belousov VV, Zheltikov AM. Multimodal nonlinear-optical imaging of nucleoli. Opt Lett 2021; 46:3608-3611. [PMID: 34329236 DOI: 10.1364/ol.416300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/12/2021] [Indexed: 06/13/2023]
Abstract
Multimodal nonlinear microscopy combining third-harmonic generation (THG) with two- and three-photon-excited fluorescence (2PEF and 3PEF) is shown to provide a powerful resource for high-fidelity imaging of nucleoli and nucleolar proteins. We demonstrate that, with a suitably tailored genetically encoded fluorescent stain, the 2PEF/3PEF readout from specific nucleolar proteins can be reliably detected against the extranucleolar 2PEF/3PEF signal, enabling high-contrast imaging of the key nucleolar ribosome biogenesis components, such as fibrillarin. THG is shown to provide a versatile readout for unstained nucleolus imaging in a vast class of biological systems as different as neurons in brain slices and cultured HeLa cells.
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15
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Mamonov NA, Petrov AE, Goroshchenko SA, Rozhchenko LV, Ivanov AA, Samochernykh KA. [Endovascular treatment of extracranial dissecting aneurysms of cervical arteries]. Zh Vopr Neirokhir Im N N Burdenko 2021; 85:16-24. [PMID: 34951756 DOI: 10.17116/neiro20218506116] [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: 06/14/2023]
Abstract
BACKGROUND Dissecting aneurysms of extracranial cervical arteries are a rare vascular pathology. To date, there is no consensus on the choice of optimal surgical approach for these aneurysms. OBJECTIVE To evaluate the effectiveness of endovascular treatment of various extracranial dissecting aneurysms. MATERIAL AND METHODS There were 19 patients with 21 extracranial dissecting aneurysms for the period from January 1, 2013 to October 19, 2020. Clinical examination, ultrasound and neuroimaging data were considered to determine surgical intervention. RESULTS Nineteen patients underwent 20 intravascular interventions: aneurysm embolization with detachable coils with stent-assistance (n=9), flow-diverting stent implantation (n=5), arterial reconstruction with a stent for carotid stenting (n=3), aneurysm embolization with balloon assistance (n=1), aneurysm embolization with detachable coils without assistance (n=2). There were no complications. All patients were discharged without neurological impairment after 1-5 days. Long-term results of control angiography were analyzed within 1-19 months in 12 patients. All aneurysms were completely occluded. Asymptomatic occlusion of flow-diverting stent together with aneurysm occurred in 1 patient with low compliance to antiplatelet therapy. Other 6 patients are scheduled for elective angiography. CONCLUSION Extracranial dissecting aneurysms of cervical arteries require vigilance due to their rare occurrence and risk of severe complications. In our opinion, intravascular interventions are advisable for these patients as effective and safe procedures.
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Affiliation(s)
- N A Mamonov
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
| | - A E Petrov
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
| | - S A Goroshchenko
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
| | - L V Rozhchenko
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
| | - A A Ivanov
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
| | - K A Samochernykh
- Polenov Research Neurosurgery Institute, Saint-Petersburg, Russia
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16
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Ivanov AA, Latyshev AV, Butorina NN, Domoratskaya EI, Danilova TI, Popova OP. Osteogenic Potential of Decellularized Tooth Matrix. Bull Exp Biol Med 2020; 169:512-515. [PMID: 32915363 DOI: 10.1007/s10517-020-04920-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Indexed: 10/23/2022]
Abstract
We studied the possibility of using decellularized tooth matrix as a scaffold to restore bone tissue. It was found that mesenchymal stem cells underwent spontaneous osteogenic differentiation on the decellularized tooth matrix, which makes it possible to use it as a natural allograft in the treatment of resorption of alveolar bone tissue.
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Affiliation(s)
- A A Ivanov
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - A V Latyshev
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, Moscow, Russia
| | - N N Butorina
- N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia
| | - E I Domoratskaya
- N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia
| | - T I Danilova
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, Moscow, Russia
| | - O P Popova
- A. I. Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of the Russian Federation, Moscow, Russia
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17
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Ivanov AA, Andrianova IE, Blokhina TM, Bychkova TM, Vorob'eva NY, Karaulova TA, Nikitenko OV, Parfenova IM, Sycheva LP, Yaschkina EI, Osipov AN. Behavioral Responses and Immune and Cytogenetic Parameters of Food-Restricted Mice. Bull Exp Biol Med 2020; 169:258-261. [PMID: 32651823 DOI: 10.1007/s10517-020-04863-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Indexed: 11/25/2022]
Abstract
The experiments on mice showed that subchronic food restriction to 40 and 8% of unrestricted ration is a strong stressor inducing devastation of lymphoid organs, primarily the thymus and spleen. The mice in the group with severe food restriction (8% of normal ration) demonstrated increased front paw grip force. We also observed an increase in spontaneous motor activity in these animals correlated with food restriction. Food deprivation led to inhibition of proliferative activity of the bone marrow cells and suppression of erythropoiesis. Moreover, severe food restriction was accompanied by a decrease in the number of double-strand DNA breaks evaluated by the release of γH2AX+-cells and the ratio of polychromatophilic erythrocytes.
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Affiliation(s)
- A A Ivanov
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia. .,State Research Center Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia.
| | - I E Andrianova
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - T M Blokhina
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - T M Bychkova
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia.,State Research Center Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - N Yu Vorob'eva
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - T A Karaulova
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - O V Nikitenko
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia.,State Research Center Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
| | - I M Parfenova
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - L P Sycheva
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - E I Yaschkina
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - A N Osipov
- State Research Center A. I. Burnazyan Federal Medical Biophysical Center of Federal Medical-Biological Agency of Russia, Moscow, Russia
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18
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Lanin AA, Pochechuev MS, Chebotarev AS, Kelmanson IV, Bilan DS, Kotova DA, Tarabykin VS, Ivanov AA, Fedotov AB, Belousov VV, Zheltikov AM. Cell-specific three-photon-fluorescence brain imaging: neurons, astrocytes, and gliovascular interfaces. Opt Lett 2020; 45:836-839. [PMID: 32058483 DOI: 10.1364/ol.45.000836] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We present brain imaging experiments on rat cortical areas, demonstrating that, when combined with a suitable high-brightness, cell-specific genetically encoded fluorescent marker, three-photon-excited fluorescence (3PEF), enables subcellular-resolution, cell-specific 3D brain imaging that is fully compatible and readily integrable with other nonlinear-optical imaging modalities, including two-photon-fluorescence and harmonic-generation microscopy. With laser excitation provided by sub-100-fs, 1.25-µm laser pulses, cell-specific 3PEF from astrocytes and their processes detected in parallel with a three-photon-resonance-enhanced third harmonic from blood vessels is shown to enable a high-contrast 3D imaging of gliovascular interfaces.
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19
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Radu VM, Ionescu P, Deak G, Diacu E, Ivanov AA, Zamfir S, Marcus MI. Overall assessment of surface water quality in the Lower Danube River. Environ Monit Assess 2020; 192:135. [PMID: 31974773 DOI: 10.1007/s10661-020-8086-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/27/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Water is an important receptor of environmental problems generated by anthropogenic activities, the water quality being affected by their magnitude and impact as well as by climate change. Given the international and cross-border nature of the Danube River and being aware that the pollution risk assessment is one of the key elements of the ecology and health of the people in its region, this paper assessed the state of water quality in the Lower Danube River in accordance with Water Framework Directive (Directive 2000/60/EC). The intensive monitoring program applied by the National Institute for Research and Development in Environmental Protection (INCDPM) took place during the period 2011-2017, in which approximately 1500 samples were taken and processed from 10 monitoring sites and the quality indicators stipulated in M.O. 161/2006 were analysed according to the standards in force. In this monitoring area (km 375-km 175), hydrotechnical works have been done in order to improve navigation conditions. Therefore, on the basis of the data obtained from the monitoring campaigns, multivariate statistical methods of water quality assessment were applied on the complex set of data, and at the same time, the multiparametric quality index (ICPM) was applied, an index of global comparative assessment of water quality over historical trends, developed by INCDPM. Following the evaluation of the results, the water quality in the Lower Danube River was characterized as moderately polluted and corresponds to Class III of surface water quality. The ecosystem approach indicates that the values of the monitored indicators did not correspond to the target values according to the Water Framework Directive.
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Affiliation(s)
- Violeta-Monica Radu
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania
- Faculty of Applied Chemistry and Materials Science, University "Politehnica" of Bucharest, 1-7 Polizu Str., 011061, Bucharest, Romania
| | - Petra Ionescu
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania.
- Faculty of Applied Chemistry and Materials Science, University "Politehnica" of Bucharest, 1-7 Polizu Str., 011061, Bucharest, Romania.
| | - Gyorgy Deak
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania.
| | - Elena Diacu
- Faculty of Applied Chemistry and Materials Science, University "Politehnica" of Bucharest, 1-7 Polizu Str., 011061, Bucharest, Romania
| | - Alexandru Anton Ivanov
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania
| | - Stefan Zamfir
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania
| | - Maria-Iuliana Marcus
- National Institute for Research and Development in Environmental Protection, 294 Spl. Independentei, 6th District, 06003, Bucharest, Romania
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20
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Sorokin AV, Akhmetov TD, Brul AV, Davydenko VI, Ivanov AA, Karpushov AN, Mishagin VV, Shikhovtsev IV. Update of ion-optical system of neutral beam of Tokamak à Configuration Variable. Rev Sci Instrum 2020; 91:013323. [PMID: 32012616 DOI: 10.1063/1.5128569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
An injector of fast deuterium atoms for plasma heating was designed and installed at the Tokamak à Configuration Variable (TCV). The neutral beam can deliver 1 MW power to the plasma in 2 s pulses. An ion beam of the injector is formed by a triode multislit ion-optical system with spherical electrodes which provide ballistic focusing. Tests at TCV revealed that the total angular divergence of the neutral beam across the slits exceeded the expected value more than twice. It was finally established that this increase in divergence was caused by the asymmetry of the chamfers at the slit edges of the plasma electrode. The redesigned shape of the slits of the plasma grid together with precise machining significantly improved the beam quality. Experimental testing proved that the neutral beam profile in the direction across the grid slits became very close to the expected value.
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Affiliation(s)
- A V Sorokin
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - T D Akhmetov
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - A V Brul
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - V I Davydenko
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - A A Ivanov
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - A N Karpushov
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland
| | - V V Mishagin
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
| | - I V Shikhovtsev
- Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia
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Radu VM, Ionescu P, Deak G, Ivanov AA, Diacu E, Anghel AM. Quality Assessment of Some Freshwater Resources Located in Bucharest and Surrounding Areas. III. Case Study: Trophic Status Assessment of Mogosoaia, Herastrau and Pantelimon Lakes. Rev Chim 2019. [DOI: 10.37358/rc.19.11.7646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The aim of this paper is the evaluation of the trophic status of three lakes riparian to the Colentina River, namely Mogosoaia, Herastrau, Pantelimon, as Part III of an extended study on evaluation of the freshwater resources quality in Bucharest and surrounding areas [1, 2], supplementing the general quality assessment based on indices and indexes presented in Part I with a more in depth analysis of nutrient speciation and partitioning between water and upper sedimentary layers. Water and sediment samples were taken from the inlet and outlet areas of each lake in two sampling campaigns in July 2016 and September 2016. Some of the nutrient related water quality parameters presented in Part I of this series have been used here, together with the analysis of total nitrogen and total phosphorus content in sediments, to assess the general trophic state of the lakes and to highlight the relationships between the nitrogen and the phosphorus content from water and sediments.The studied lakes were found to be eutrophic, Mogosoaia and Pantelimon being in the most advanced state. A significant amount of nitrogen and phosphorus was detected in all sediments analysed, constituting a high accumulation of nutrients from anthropogenic activities. Actions to improve local sanitation infrastructure and to prevent anaerobic leakage of nutrients from sedimentary deposits are recommended.
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22
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Ionescu P, Ivanov AA, Radu VM, Deak G, Diacu E, Marcu E, Anghel AM. Quality Assessment of Some Freshwater Resources Located in Bucharest and Surrounding Areas II. Water quality assessment of Arges and Dambovita rivers. Rev Chim 2019. [DOI: 10.37358/rc.19.10.7612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The water quality assessment of Arges River and its tributary Dambovita River is presented in this paper as second part of an extended study on the evaluation of some freshwater resources quality located in Bucharest and surrounding areas [1]. This case study was carried out mainly for the water in the confluence area of Arges and Dambovita rivers, where a water and sediment sampling campaign was organized in June 2018. 21 quality parameters were determined for water samples and for the sediment samples the heavy metals content was evaluated. The results of the water samples analysis allowed the framing in quality classes, and for sediment samples the values obtained were compared with the chemical quality standards for sediments, according to the current national regulations. Following the assessment, it was established that the freshwaters in both Arge� River and Dambovita River, downstream the confluence with the Dambovita River are loaded with different pollutants, such as organic substances and nutrients leading to a lower water quality classification.
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23
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Radu VM, Ivanov AA, Ionescu P, Deak G, Diacu E, Ciobotaru IE, Ghita G, Marcu E. Multivariate Statistical Characterisation of Soil Quality in the Lower Danube River Riparian Areas. Rev Chim 2019. [DOI: 10.37358/rc.19.7.7347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Increasing anthropogenic influences on the environment has caused negative changes in natural ecosystems and soil contamination with potentially toxic metals has become a worrying issue at global level, due to the negative impact on the environment and human health. For the purpose of assessing soil contamination in the riparian areas of the Lower Danube River, a number of 144 soil samples were collected twice a year, in the period of June 2013 � December 2016, from 9 monitoring locations, from 0.05 m and 0.3 m depths, and the following indicators: Cr, Cu, Mn, Ni, Pb, Zn, including Ca, Mg, Corg, SO42- and humus content have been monitored. The soil was sampled, conserved and analysed according to the European standards in force. Metal concentrations were determined using flame (FAAS) and graphite furnace (GFAAS) atomic absorption spectrometry after �aqua regia� digestion of dried, homogenised and 0.5 mm sieved soil sub-samples. Comparing the average concentration values of the analysed potentially toxic metals, a decreasing tendency following the order Cr]Pb]Ni]Cu]Zn]Mn was observed and by reporting the average values at the normal limits, the order Zn]Cu]Mn]Ni]Pb]Cr of magnitude was obtained. To investigate possible correlations and interdependencies of potentially toxic metals content in the riparian soil, multivariate statistical methods were used. After applying Principal Component Analysis (PCA), 3 main components were identified, with a combined share of about 74 % of the original data-set variance. It was observed that during the monitoring period the average values of the all monitored elements from the studied soils were slightly below the normal reference values, according to the national legislation.
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24
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Lazar IG, Diacu E, Vasile GG, Ungureanu EM, Ivanov AA. Study of Analytical Parameters of a Differential Pulse Voltammetric Method using Chemically Modified Electrodes for Lead Analysis in Water. Rev Chim 2018. [DOI: 10.37358/rc.18.9.6524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The development of a new voltammetric method for the determination of Pb2+ ions in water samples using glassy carbon electrodes modified with 2,6-bis((E)-2-(thiophen-2-yl)vinyl)-4-(4,6,8-trimethylazulen-1-yl)pyrylium perchlorate is here presented. The analytical parameters for differential pulse voltammetry (DPV) were established and the method was applied for Pb2+ ions determination in acetate buffer solution at pH 5.5. For the developed DPV method the linearity of calibration curve was set up between 20.71mg L-1 - 103.6 mg L-1 with a good correlation coefficient R2=0.9988, the intermediate precision was calculated for three lead concentrations:20, 60,100mg L-1.The obtained detection and quantification limits were 3.1 mg L-1, respectively 10.4 mg L-1. An uncertainty budget was developed and the value of expanded uncertainty was assessed. The optimized method was used to analyze Pb2+ ions from of water samples and good correlation with standard method was obtained.
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Klimova RR, Momotyuk ED, Demidova NA, Chernoryzh YY, Koval VS, Ivanov AA, Zhuze AL, Kushch AA. [Dimeric bisbenzimidazoles suppress the herpes simplex virus and human cytomegalovirus infections in cell сultures]. Vopr Virusol 2018; 62:162-168. [PMID: 29733165 DOI: 10.18821/0507-4088-2017-62-4-162-168] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 02/28/2017] [Indexed: 11/17/2022]
Abstract
Antiviral activity of new AТ-specific fluorescent symmetric dimeric bisbenzimidazoles of DBА(n) series was assessed in the cell models of infections caused by type 1 herpes simplex virus (HSV1) and human cytomegalovirus (CMV). In DBA(n) molecules bisbenzimidazole fragments are bound to an oligomethylene liner with varied number of methylene groups in the linker (n = 1, 3, 5, 7, 9, 11). In contrast to DB(n) dimeric bisbenzimidazoles, in DBA(n) series terminal fragments of macromolecules contain N-dimethylaminopropylcarboxamide groups instead of N-methylpiperazine groups. DBА(n) compounds better dissolve in water, pass across plasma and nuclear membrane, and stain DNA in living cells. DBA(1) and DBA(7) produced therapeutic effects in HSV1 infection; DBA(7) completely suppressed the infection. DBA(11) displayed in vitro therapeutic activity in HSV1 and CMV infections. In addition, DBA(7) and DBA(1) showed microbicidal activity. Thus, DBA(11), which is active against two viruses causing severe diseases with serious health consequences for immunodeficient individuals, should be further investigated. High antiviral activity of DBA(7) in all test models indicates that this compound is a promising active agent for innovative antiviral drugs.
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Affiliation(s)
- R R Klimova
- D.I. Ivanovsky Institute of Virology «Federal Research Center of Epidemiology and Microbiology named after the honorary academician N.F. Gamaleya», Moscow, 123098, Russian Federation
| | - E D Momotyuk
- D.I. Ivanovsky Institute of Virology «Federal Research Center of Epidemiology and Microbiology named after the honorary academician N.F. Gamaleya», Moscow, 123098, Russian Federation.,Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, 109473, Russian Federation
| | - N A Demidova
- Skryabin Moscow State Academy of Veterinary Medicine and Biotechnology, Moscow, 109473, Russian Federation
| | - Ya Yu Chernoryzh
- D.I. Ivanovsky Institute of Virology «Federal Research Center of Epidemiology and Microbiology named after the honorary academician N.F. Gamaleya», Moscow, 123098, Russian Federation
| | - V S Koval
- Engelhardt Institute of Molecular Biology, Moscow, 119991, Russian Federation.,Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russian Federation
| | - A A Ivanov
- Blokhin Russian Cancer Research Center, Research Institute of Carcinogenesis, Moscow, 115478, Russian Federation
| | - A L Zhuze
- Engelhardt Institute of Molecular Biology, Moscow, 119991, Russian Federation
| | - A A Kushch
- D.I. Ivanovsky Institute of Virology «Federal Research Center of Epidemiology and Microbiology named after the honorary academician N.F. Gamaleya», Moscow, 123098, Russian Federation
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Ivanov AA, Danilova TI, Popova OP, Erohin AI, Semenihina ES. Peculiarities of Osteogenesis by Periosteal Cells after Experimental Ectopic Transplantation. Bull Exp Biol Med 2018; 165:408-411. [PMID: 30003422 DOI: 10.1007/s10517-018-4181-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Indexed: 01/31/2023]
Abstract
We carried out a comparative study of the features of osteogenesis from the progenitor osteogenic periosteal cells in rabbit and human. At the initial stages, high osteogenic potential of both human and rabbit periosteal cells was observed. However, at the later stages, the cell response favors resorption of the new bone tissue formed from periosteal cells in rabbits, but does not affect the bone tissue formed from human progenitor osteogenic periosteal cells. These functional characteristics of rabbit periosteal cells should be considered when planning the experiment.
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Affiliation(s)
- A A Ivanov
- I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - T I Danilova
- I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - O P Popova
- I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - A I Erohin
- I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - E S Semenihina
- I. M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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Marcu E, Deak G, Ciobotaru IE, Ivanov AA, Ionescu P, Tociu C, Diacu E. The Assessment of Content and Dynamics of Nutrients in Water and Sediments from the Plumbuita Lake, Bucharest. II. Study on nitrogen content and distribution. Rev Chim 2018. [DOI: 10.37358/rc.17.12.5968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Water pollution with nutrient-based contaminants represents a special concern at national level as it may lead to the occurrence of water eutrophication affecting the properties of the water bodies. This paper presents the characterisation of nitrogen distribution in water and sediments from the Plumbuita Lake (Bucharest, Romania) and the speciation of this element in the form of ammonium, nitrite, nitrate and organic nitrogen. The results of this study prove the importance of an integrated approach regarding the quantification of nutrient content with the nutrient dynamics in the evaluation of the eutrophication phenomenon.
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Abstract
The quality of the aquatic environment was strongly influenced by the development of urbanization, industrialization and population growth, and therefore water pollution, mainly due to the presence of heavy metal, becoming a widespread concern. The objective of this work was to evaluate the possibility to remove heavy metals Cd, Zn, Cr and Ni from wastewater using two aquatic plants, water hyacinth (Eichornia crassipes) and water lettuce (Pistia stratiottes). These plants possess excellent abilities to metabolize and bioaccumulate heavy metals from various polluted aquatic environments. For a period of 30 days, the content of heavy metals from wastewater and aquatic plants samples was monitored weakly and the efficacy of these plants to remove heavy metals was quantified. Heavy metals were determined by atomic absorption spectrophotometry with graphite furnace (GFAAS). The obtained results have shown the efficacy of Eichornia crassipes and Pistia stratiottes to remove metals from the studied wastewater. The bioaccumulation rate of heavy metals in plants was effective until day 24 of the period of 30 days of the experiment, as the plants become inefficient beyond this period. The uptake of heavy metals in the studied aquatic plants depends on the concentration of each heavy metal present in the used wastewater and the exposure time.
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Marcu E, Deak G, Ciobotaru IE, Ivanov AA, Ionescu P, Tociu C, Diacu E. The Assessment of Content and Dynamics of Nutrients in Water and Sediments from the Plumbuita Lake, Bucharest. I. Study on Phosphorous Content and Distribution. Rev Chim 2017. [DOI: 10.37358/rc.17.11.5913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Nutrient pollution of surface waters is a challenge of the modern society, leading to the occurrence of the eutrophication phenomenon which limits the uses of the aquatic resources for various purposes. The aim of this study was the evaluation of water and sediment status of the Plumbuita Lake (Bucharest-Romania), focusing on phosphorous speciation (phosphorous bonded to iron and aluminium, phosphorous bonded to calcium, and soluble and loosely sorbed phosphorous bonded to carbonate) and dynamics as this element has a significant contribution to algal bloom. The results reported herein will allow the understanding and control of the processes that take place within the water body and support the appropriate techniques for the mitigation of water polluted mitigation with phosphorus-based compounds.
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Abstract
AIM to establish a relationship between the main markers tumor stem cells (TSCs), CD44, and CD24, the level of tenascin C production, and chemoresistance in triple-negative breast cancer (BC). SUBJECTS AND METHODS Thirty biopsy specimens from triple-negative BC patients who had conventionally received preoperative chemotherapy followed by surgery were selected in the investigation. All the selected patients were conventionally assigned to neoadjuvant polychemotherapy (PCT) with paclitaxel and carboplatin. The surgical specimens were analyzed in relation to the degree of a tumor morphological response to PCT. The magnitude of the health-promoting effect of neoadjuvant therapy was evaluated according to the residual cancer burden (RCB) system using an on-line calculator; RCB was categorized into classes (from RCB-0 to RCB-III). The markers CD44, СD24, and tenascin C were identified by the standard immunoperoxidase method in the primary biopsies. RESULTS Varying morphological responses of triple-negative breast cancer to PCT were revealed, which showed resistance in 60% of the cases. The chemoresistance found in most (87%) cases coincided with the identification of the CD44+/CD24low/- profile. The detection of the higher production of the extracellular matrix tenascin C participating in the formation of the TSC niche fully combined with the CD44+/CD24low/- phenotype; while the maximum response to tenascin C was noted in the cases differing in not only a lack of responses to PCTs, but also in the most aggressive course in conjunction with metastatic disease. CONCLUSION Immunohistochemical analysis shows that the unique association between the CD44+/CD24low/- phenotype and the pronounced production of tenascin C may have a prognostic potential, prospectively indicating the inefficiency of neoadjuvant PCT, in particular that with platinum derivatives, which is used for the standard treatment of triple-negative BC. Taking into account the role of tenascin C in invasion, metastasis, and chemoresistance, it per se may be considered as a promising target for the targeted and/or combined therapy of triple-negative BC.
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Affiliation(s)
- O P Popova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
| | - S Yu Bogomazova
- Treatment and Rehabilitation Center, Ministry of Health of Russia, Moscow, Russia
| | - A A Ivanov
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation, Moscow, Russia
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Goroshchenko SA, Ivanov AY, Rozhchenko LV, Ivanova NE, Zabrodskaya YM, Razmologova OY, Kondrat'ev AN, Potemkina EG, Dmitrievskaya AY, Blagorazumova GP, Radzhabov SD, Petrov AE, Ivanov AA, Sinitsyn PS, Bobinov VV. [Extrapontine myelinolysis developed after aneurysmal subarachnoid hemorrhage (a case report and literature review)]. Zh Vopr Neirokhir Im N N Burdenko 2017; 80:82-87. [PMID: 28139577 DOI: 10.17116/neiro201680682-87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
TOPICALITY Central pontine and extrapontine myelinolysis is a rare and dangerous form of the demyelinating process of undefined origin, the development of which is associated with a very low sodium level in the blood (hypernatremia). OBJECTIVE To describe a rare case of extrapontine myelinolysis as a complication occurring in the hemorrhagic period of anterior communicating artery aneurysm rupture as well as to demonstrate that this condition can be diagnosed intravitally. CONCLUSION Clinical vigilance of extrapontine myelinolysis may promote the timely diagnosis and treatment of this disease, which is a potential cause of death. Pulse-therapy with glucocorticoids provides the opportunity to achieve regression of neurological symptoms and to stabilize the patient's condition.
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Affiliation(s)
- S A Goroshchenko
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - A Yu Ivanov
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - L V Rozhchenko
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - N E Ivanova
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - Yu M Zabrodskaya
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - O Yu Razmologova
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - A N Kondrat'ev
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - E G Potemkina
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - A Yu Dmitrievskaya
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - G P Blagorazumova
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - S D Radzhabov
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - A E Petrov
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - A A Ivanov
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - P S Sinitsyn
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
| | - V V Bobinov
- Polenov Russian Scientific Research Institute of Neurosurgery, the Branch of the Almazov Federal North-West Medical Research Centre, St. Petersburg, Russia
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Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Sidorov BB, Ivanov AA. [The highly specific and sensitive analysis of repertoire of serum antibodies using peptide microchips in patients with diagnosis of breast cancer.]. Klin Lab Diagn 2017; 62:557-563. [PMID: 30807056 DOI: 10.18821/0869-2084-2017-62-9-557-563] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 05/16/2017] [Indexed: 06/09/2023]
Abstract
Nowadays, the search for new biomarkers of cancer is actual for early diagnostic. The antibodies against antigens associated with tumors arouse an interest as an alternative to the present biomarkers. The alteration of quantity and specificity of antibodies in blood serum indicates processes occurring in the organism, including development of oncologic diseases. The article presents the results of analysis of repertoire of antibodies (immunosignatures) using peptide micro-chips in patients with diagnosis of breast cancer. The study established 119 informative peptides out of 330 034 peptides, presented on the microchip. The binding of antibodies with them demonstrates statistically significant intergroup values (p<0.001). This panel of peptides is effective in discerning sera of patients and healthy donors with high sensitivity and specificity. The evaluation of repertoire of antibodies interacting with panel of synthetic peptides can be used in development of diagnostic tests in case of detection of breast cancer at early stages.
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Affiliation(s)
- B B Sidorov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
| | - B B Sidorov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
| | - B B Sidorov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
| | - B B Sidorov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
| | - B B Sidorov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
| | - B B Sidorov
- The Altaiiskii branch of the N.N. Blokhin Rossiiskii oncologic center of Minzdrav of Russia, 656049, Barnaul, Russia
| | - B B Sidorov
- The Altaiiskii state medical university of Minzdrav of Russia, 656038, Barnaul, Russia
| | - B B Sidorov
- Center for Innovations in Medicine, The Biodesign Institute, Arizona State University, 85287, Tempe, AZ, USA
| | - B B Sidorov
- The Altaiiskii branch of the N.N. Blokhin Rossiiskii oncologic center of Minzdrav of Russia, 656049, Barnaul, Russia
| | - A A Ivanov
- The Russian-American anti-cancer center of the Altaiiskii state university, 656049, Barnaul, Russia
- Center for Innovations in Medicine, The Biodesign Institute, Arizona State University, 85287, Tempe, AZ, USA
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Murashko TO, Smirnov IV, Ivanov AA, Postnikov PS, Nemtsev AO, Bondarev AA, Udut VV, Prisukhin AN, Kornaukhov AN, Sergeev TS. [STUDYING GASTRIC ULCERATION EFFECT OF A NEW DRUG INTENDED FOR TREATMENT OF CHRONIC INFLAMMATORY DISEASES OF KIDNEYS AND URINARY TRACT.]. Eksp Klin Farmakol 2016; 79:26-28. [PMID: 29782776] [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: 06/08/2023]
Abstract
Gastric ulceration properties (gastrointestinal toxicity) of the sodium salt of 4-(0-β-D-glucopyranosyloxy) benzoic acid, a new nonsteroidal anti-inflammatory drug (NSAID) intended for the treatment of chronic inflammatory diseases of the kidney and urinary tract, have been tested on laboratory animals. Acute NSAID-induced gastropathy was induced in rats by oral administration of indomethacin, nimesulide, diclofenac, acetylsalicylic acid and the new drug. Test animals were killed by instantaneous decapitation 4 h after treatment and their gastrointestinal tracts were studied by pathomorphological methods on micropreparations and histological sections of gastric mucosa. It was established that the new drug, in contrast to reference NSAIDS, did not exhibit gastropathic action on the gastric mucosa.
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Murashko TO, Simirnov IV, Bondarev AA, Ivanov AA, Postnikov PS, Nemtsev AO, Udut VV. ANTI-INFLAMMATORY ACTIVITY OF SODIUM SALT OF 4-(O-β-D-GLUCOPYRANOSYLOXY)BENZOIC ACID. Eksp Klin Farmakol 2016; 79:26-28. [PMID: 29949700] [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: 06/08/2023]
Abstract
We have evaluated the anti-inflammatory activity of the sodium salt of 4-(O-β-D-glucopyranosyloxy)benzoic acid in comparison to well-known nonsteroidal anti-inflammatory drugs (NSAIDs). Carrageenan suspension (1%, 0.1 mL) was injected into subplantar region of the right hindpaw of rats (n = 12) pretreated (7 days and 60 min before carrageenan injection) intragastrically with methyl ester of 4(β-D-glucopyranosyloxy)benzoic acid (20 mg/kg), acetylsalicylic acid (20 mg/kg), 4-hydroxybenzoic acid (20 mg/kg), or vehicle (2 mL of purified water). Paw edema volume was measured plethysmographically at 1, 2 and 4 h after carrageenan injection. The results showed that intragastric administration of the sodium salt of 4-(O-β-D-glucopyranosyloxy)benzoic acid in a dose of 20 mg/kg for 7 days decreased the intensity of experimental inflammation.
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Ivanov AA, Dorozhkina OV, Vorozhtsova SV, Abrosimova AN, Bulynina TM, Gajewski VN, Ushakov IB, Krasavin EA. Early Response of Mouse Bone Mrrow Cells to Short-Term Irradiation in a Wide Range of Doses. Radiats Biol Radioecol 2016; 56:389-396. [PMID: 30703298] [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: 06/09/2023]
Abstract
Experiments on mice irradiated with γ-rays in a wide range of doses, from 0.5 to 400 cGy and the bone marrow have shown cytogenetic and cytological effects ranging from I cGy dose 24 hours after exposure to radiation. Dose-independent reduction of the number of nucleated cells in the bone marrow, normal or even elevated levels of mitotic activity, and extreme dependence of the type of chromosomal aberrations on the radiation dose with the maximum in the region of 7.5 cGy were observed in the dose range from 1 to 20 cGy. A linear dose-dependent decrease of the cell.number in the bone marrow, a decreased mitotic activity and increased number of aberrant mitosis were marked in the dose range from 20 to 400 cGy. The findings are discussed in terms of their application for explaining the mechanisms of hormesis, adaptive response, as well as the appropriateness of accounting the parameters studied for solving problems of regulation of permissible doses.
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Ivashkina OI, Toropova KA, Ivanov AA, Chekhov SA, Anokhin KV. Waves of c-Fos and Arc Proteins Expression in Neuronal Populations of the Hippocampus in Response to a Single Episode of New Experience. Bull Exp Biol Med 2016; 160:729-32. [PMID: 27160884 DOI: 10.1007/s10517-016-3296-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Indexed: 10/21/2022]
Abstract
Accumulation of c-Fos and Arc proteins in neurons in different regions of the hippocampus after single trial of contextual fear conditioning was studied by using immunohistochemical staining. We found that the dynamics of the c-Fos and Arc expression has a biphasic pattern: the first peak was observed in 15-30 min after learning and the second less pronounced peak in 1-3 h. Induction of Arc occurred earlier than c-Fos and the overall dynamics of the two waves slightly varied in the dentate gyrus and hippocampal CA1 and CA3 fields. The findings open the possibility of mapping the cognitive neural networks of the brain with higher temporal resolution and draw attention to fluctuations of hippocampal activity after a single brief episode of new experience.
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Affiliation(s)
- O I Ivashkina
- National Research Center Kurchatov Institute, Moscow, Russia.
| | - K A Toropova
- National Research Center Kurchatov Institute, Moscow, Russia
| | - A A Ivanov
- P. K. Anokhin Research Institute of Normal Physiology, Russian Academy of Sciences, Moscow, Russia
| | - S A Chekhov
- P. K. Anokhin Research Institute of Normal Physiology, Russian Academy of Sciences, Moscow, Russia
| | - K V Anokhin
- National Research Center Kurchatov Institute, Moscow, Russia.,P. K. Anokhin Research Institute of Normal Physiology, Russian Academy of Sciences, Moscow, Russia
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Akhmetov TD, Davydenko VI, Ivanov AA, Kreter A, Mishagin VV, Savkin VY, Shulzhenko GI, Unterberg B. Note: Arc discharge plasma source with plane segmented LaB6 cathode. Rev Sci Instrum 2016; 87:056106. [PMID: 27250481 DOI: 10.1063/1.4950903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A plane cathode composed of close-packed hexagonal LaB6 (lanthanum hexaboride) segments is described. The 6 cm diameter circular cathode is heated by radiation from a graphite foil flat spiral. The cathode along with a hollow copper anode is used for the arc discharge plasma production in a newly developed linear plasma device. A separately powered coil located around the anode is used to change the magnetic field strength and geometry in the anode region. Different discharge regimes were realized using this coil.
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Affiliation(s)
- T D Akhmetov
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - V I Davydenko
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - A A Ivanov
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - A Kreter
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, 52425 Jülich, Germany
| | - V V Mishagin
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - V Ya Savkin
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - G I Shulzhenko
- Budker Institute of Nuclear Physics SB RAS, 11 Lavrentieva Prospect, 630090 Novosibirsk, Russia
| | - B Unterberg
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, 52425 Jülich, Germany
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Abstract
High mortality from breast cancer is associated with the high heterogeneity of tumor and the frequent recurrences of the pathological process, which are due to the presence of tumor stem cells. The review considers the biological properties of tumor stem cells, the molecular mechanisms of their regulation, interaction with the microenvironment, and their role in the heterogeneity of the morphological and clinical forms of breast cancer.
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Affiliation(s)
- A A Ivanov
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation
| | - O P Popova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation
| | - A V Kuznetsova
- N.K. Koltsov Institute for Developmental Biology, Russian Academy of Sciences, Moscow, Russia
| | - T I Danilova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation
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Ivanov AA, Musaev AA, Komissarov NV, Seleznev AB, Loshakov OV. [Modern problems and main ways of imorovement of disinfecting art in Armed Forces]. Voen Med Zh 2016; 337:13-19. [PMID: 27263206] [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: 06/05/2023]
Abstract
The article states the reasons defining the high relevance and significance of disinfection measures in modern conditions, reports general and specific problems of ensuring disinfection during medical service day-to-day activities. The directions of development of chemical and technical disinfectants and methods for'their use on different objects and under various climatic conditions are determined. It was shown that the crucial condition for implementation of theoretical and practical ways of improving disinfection affairs is a comprehensive approach based on concerted efforts of all authorities of Russian Armed Forces Medical Services, research and sanitary-epidemiological institutions, as well as relevant chars of the Military Medical Academy in close cooperation with representatives of domestic industry.
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Vorozhtsova SV, Bulynina TM, Ivanov AA. [CYTOGENETIC EFFECTS IN MICE BONE MARROW AFTER IRRADIATION BY FAST NEUTRONS]. Aviakosm Ekolog Med 2016; 50:55-60. [PMID: 27347593] [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: 06/06/2023]
Abstract
Mechanisms of damaging mice bone marrow cells by 1.5 MeV neutrons at the dose of 25-250 cGy, dose rate of 23.9 cGy/s and γ-quants ⁶⁰Co as a standard radiation were studied. The mitotic index and aberrant mitoses in marrow preparations were counted in 24 and 72 hours after irradiation. Coefficients of relative biological effectiveness (RBE) of fast neutrons 24 and 72 hours post irradiation calculated from mitotic index reduction and aberrant mitoses formation were within the range from 4.1 ± 0.1 to 7.3 ± 0.1. Mean time of the existence of chromosomal aberrations in marrow cells was determined. For the specified doses from γ-rays, the period of aberrations existence was 1.4-1.1 cycles and for neutrons, 1.0-0.6 cycles. Morphologic analysis of neutron-induced damages and ratio of the most common breaks demonstrated a high production of bridges, which outnumbered cells with fragments in 3 to 4 times suggesting a more destructive effect on the genetic structures of cells. RBE of fast neutrons is a variable that grows with a radiation dose. Moreover, RBE estimated after 72 hours exceeded values it had 24 hours after irradiation.
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Smirnov IV, Murashko TO, Ivanov AA, Nemtsev AO, Postnikov PS, Bondarev AA, Udut VV. [DIURETIC ACTIVITY OF 4-O-CARBOXYPHENYL-D-GLUCOPYRANOSIDE SODIUM SALT ADMINISTERED VIA DIFFERENT ROUTES]. Eksp Klin Farmakol 2016; 79:20-22. [PMID: 27159953] [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: 06/05/2023]
Abstract
It was compared the diuretic activity of the sodium salt of 4-(O-β-D-glucopyranosyloxy)benzoic acid for enteral (intragastric) and parenteral ways of administration. The test substance was administered enterally and parenterally (subcutaneously in the region of the withers) in a daily dose of 18 µmol/kg for the first seven days and in a dose of 54 mmol/kg for the next seven days. Diuretic activity of the sodium salt of 4-(O-β-D-glucopyranosyloxy)benzoic acid was evaluated in terms of urine volume. Urine was analyzed for creatinine and the concentration of sodium, potassium and chloride ions. Experiments showed that the sodium salt of 4-(O-β-D-glucopyranosyloxy)benzoic acid produced a diuretic effect only for the enteral administration route.
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Anikeev AV, Bagryansky PA, Beklemishev AD, Ivanov AA, Kolesnikov EY, Korzhavina MS, Korobeinikova OA, Lizunov AA, Maximov VV, Murakhtin SV, Pinzhenin EI, Prikhodko VV, Soldatkina EI, Solomakhin AL, Tsidulko YA, Yakovlev DV, Yurov DV. Progress in Mirror-Based Fusion Neutron Source Development. Materials (Basel) 2015; 8:8452-8459. [PMID: 28793722 PMCID: PMC5458859 DOI: 10.3390/ma8125471] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 11/22/2015] [Accepted: 11/27/2015] [Indexed: 11/16/2022]
Abstract
The Budker Institute of Nuclear Physics in worldwide collaboration has developed a project of a 14 MeV neutron source for fusion material studies and other applications. The projected neutron source of the plasma type is based on the gas dynamic trap (GDT), which is a special magnetic mirror system for plasma confinement. Essential progress in plasma parameters has been achieved in recent experiments at the GDT facility in the Budker Institute, which is a hydrogen (deuterium) prototype of the source. Stable confinement of hot-ion plasmas with the relative pressure exceeding 0.5 was demonstrated. The electron temperature was increased up to 0.9 keV in the regime with additional electron cyclotron resonance heating (ECRH) of a moderate power. These parameters are the record for axisymmetric open mirror traps. These achievements elevate the projects of a GDT-based neutron source on a higher level of competitive ability and make it possible to construct a source with parameters suitable for materials testing today. The paper presents the progress in experimental studies and numerical simulations of the mirror-based fusion neutron source and its possible applications including a fusion material test facility and a fusion-fission hybrid system.
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Affiliation(s)
- A V Anikeev
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - P A Bagryansky
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - A D Beklemishev
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - A A Ivanov
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - E Yu Kolesnikov
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
| | - M S Korzhavina
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
| | - O A Korobeinikova
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - A A Lizunov
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - V V Maximov
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - S V Murakhtin
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - E I Pinzhenin
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
| | - V V Prikhodko
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - E I Soldatkina
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - A L Solomakhin
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - Yu A Tsidulko
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
| | - D V Yakovlev
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
- Department of Physics, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia.
| | - D V Yurov
- Budker Institute of Nuclear Physics SB RAS, Lavrentyeva av. 11, Novosibirsk 630090, Russia.
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Buica GO, Birzan L, Popescu LR, Ivanov AA, Ungureanu EM. Thermodynamics of interactions between lead(II) and cadmium(II) ions and azulene-based complexing polymer films. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-3055-9] [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: 11/29/2022]
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Gvetadze RS, Abramyan SV, Ivanov AA, Nubaryan AP. [Use of diagnostic templates at stages of prosthetics treatment with implant-retained restorations]. Stomatologiia (Mosk) 2015; 94:63-69. [PMID: 26343406 DOI: 10.17116/stomat201594463-69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The comparative analysis of efficiency of various types of diagnostic templates for planning orthopedic treatment of 50 patients with partial or complete absence of teeth was performed. The patients were divided in 3 groups according to template manufacturing technique. All diagnostic templates made in accordance with clinical conditions allowed transfering digital data of the scheduled prosthetic construction for virtual implantation planning. Advantages and pitfalls of each template type are discussed.
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Affiliation(s)
- R Sh Gvetadze
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of Health of Russia, Moscow, Russia
| | - S V Abramyan
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of Health of Russia, Moscow, Russia
| | - A A Ivanov
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of Health of Russia, Moscow, Russia
| | - A P Nubaryan
- Central Research Institute of Dentistry and Maxillofacial Surgery, Ministry of Health of Russia, Moscow, Russia
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Smirnov IV, Murashko TO, Ivanov AA, Nemtsev AO, Bondarev AA, Udut VV. [SEARCHING FOR NEW SYNTHETIC DIURETICS]. Eksp Klin Farmakol 2015; 78:3-5. [PMID: 27051919] [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: 06/05/2023]
Abstract
This study was aimed at estimation of the diuretic and saluretic activity of 4-nitrophenyl-O-β-D-glucopyranoside and its aglicon 4-nitrophenol in rats. Test animals daily received 4-nitrophenyl-O-β-D-glucopyranoside (group 1) and 4-nitrophenol (group 2) intragastrically in 2 mL of distilled water in a dose of 18 µmol/kg from 1st to 7th day and 54 µmol/kg from 8th to 14th days. During the experiment, the most pronounced diuretic activity was observed for 4-nitrophenyl-O-β-D-glucopyranoside in a dose of 54 µmol/kg, which increased the diuresis in rats 2.5 times as compared to the control value.
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Dorozhkina OV, Ivanov AA. [Cytogenetic investigations of bone marrow cells from mice exposed onboard biosatellite "Bion-M1"]. Aviakosm Ekolog Med 2015; 49:37-42. [PMID: 25958465] [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: 06/04/2023]
Abstract
The results of studying the mitotic activities and chromosomal aberrations in bone marrow cells from C57/BL6N mice with the help of the anaphase technique in 12 hours after completion of the 30-day "Bion-M1" mission and ground-based experiment using flight equipment are presented. A statistically reliable decline of the mitotic activity (0.74%) was found in cells taken from the space flown animals. In the ground-based experiment, a statistically reliable downward trend in proliferative activity (1.37%) was revealed after the comparison with groups of vivarium control (1.46-1.53%). In both experiments mice increased the number of initial mitotic phases (prophase + metaphase) relative to the sum of anaphases and telophases. The number of aberrant mitoses grew reliably in the group of flight animals by 29.7%, whereas in the ground-based experiment an upward trend was insignificant as their number increased up to 2.3% only. In the vivarium controls aberrant mitoses constituted 1.75-1.8%. An increase in chromosomal aberrations was largely due to such abnormalities as fragments. These findings seem to have been a result of summation of the effects of radiation and other stressful factors in space flight.
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Polyakova EP, Ksenofontov DA, Revyakin AO, Ivanov AA. [ZINK IS ACTIVATOR OF ENTERAL CALCIUM METABOLISM]. Eksp Klin Gastroenterol 2015:79-84. [PMID: 27017748] [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: 06/05/2023]
Abstract
Experiments on goats and rabbits showed that zinc supplement to the diet leads to calcium concentration rise in muscle, bone and blood of animals. However, this rise was not adequate to increase in.zinc consumption. The bulk of alimentary zinc stayed in soluble fraction, dense endogen fraction and infusoria fraction of digesta and stimulated calcium release from food particles, it's accumulation in digesta fractions and calcium utilization on the whole. Authors estimate animal digesta as homeostatic, spatial organized, endogenic formation in which zinc and calcium are functionally dependent through enteral mucosa.
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Vorozhtsova SV, Bulynina TM, Molokanov AG, Ivanov AA. [CYSTEAMINE-INDUCED MODIFICATION OF CYTOGENETIC DAMAGES TO THE CORNEAL EPITHELIUM OF MICE EXPOSED TO CORPUSCULAR RADIATION WITH VARYING LINEAR TRANSFER ENERGIES]. Aviakosm Ekolog Med 2015; 49:44-50. [PMID: 26292425] [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: 06/04/2023]
Abstract
Cytogenetic damages to cells of the corneal epithelium were studied in mice exposed to protons (10, 25, 50 and 645 MeV), ions of boron, carbon and neon, and X-rays (180 keV) within the dose range from 25 to 750 cGy and injected with a radioprotector. Animals were subjected to a single exposure. The protective effect of β-mercaptoethylamine was tested in the experiment. The radioprotector (0.2 ml) was introduced intraperitoneally 30 minutes before exposure in 350 mI/kg dose. Control animals received the same amount of sodium chloride solution. The animals were sacrificed by cervical dislocation in 24 and 72 hrs. after exposure. It was shown that cysteamine effectively protects in vivo corneal epithelium cells of mice exposed to electromagnetic radiation or protons in a broad energy spectrum (10 to 645 MeV), and to a broad range of radiation doses (25 to 750 cGy), as judged from levels of aberrant mitosis and mitotic activity. The radioprotector exhibited the highest effectiveness in animals exposed to the doses of 50 to 300 cGy. These findings prove that cysteamine may potentially be used for pharmacological protection from protons. The radioprotector failed to prevent chromosomal aberrations after exposure to heavy charged particles of boron, carbon and neon, which implies the need to design radioprotectors against this type of corpuscular radiation specifically.
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Vorozhtsova SV, Bulynina TM, Molokanov AG, Ivanov AA. [Cytogenetic damage to the corneal epithelium of mice due to the in vivo exposure to ionizing radiation with different levels of linear energy transfer]. Aviakosm Ekolog Med 2015; 49:50-56. [PMID: 25958467] [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: 06/04/2023]
Abstract
Damages to corneal epithelium cells were studied in mice irradiated by protons with the energies of 10, 25, 50 and 645 MeV, 60Co γ-quanta and accelerated ions of boron, carbon and neon with the energies of 7.5; 2.5 and 6.0 MeV/nucleon, respectively. X-rays (180 keV) were used as a standard radiation. Animals were exposed to a single dose in the range from 25 to 760 cGy. The mitotic index and aberrant mitoses were counted in corneal preparations in 24 hrs after irradiation. No matter the type of radiation, the mitotic index had an inverse dose dependence, i.e. the higher the dose, the lower the mitotic index. Exposure to all types of radiation resulted in a sharp increase in the number of chromosomal aberrations in the corneal epithelium; frequency of aberrations was a function of dose and type of radiation. The number of chromosomal aberrations displayed a peculiar direct dose dependence irrespective of type of radiation; however, heavy ions of carbon and boron are the most damaging to the cytogenetic apparatus of epithelial cells. Protons at the Bragg peak and ensuing fall, and of 50 MeV also contribute to the production of chromosomal aberrations as compared with sparsely ionizing gamma- and X-rays and high-energy protons with low linear energy transfer. Coefficients of relative biological effectiveness were calculated based on the mitotic index and evidence of aberrant mitosis.
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Ivanov AA, Bulynina TM, Molokanov AG, Vorozhtsova SV, Utina DM, Severyukhin YS, Ushakov IB. [DEMONSTRATION OF LIKELIHOOD OF THE NEGATIVE EFFECT OF PHYSICAL PROTECTION DURING TOTAL PROTON IRRADIATION OF MICE]. Aviakosm Ekolog Med 2015; 49:26-30. [PMID: 26554131] [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: 06/05/2023]
Abstract
The experiments were performed with outbred CD-1 male mice (SPF category). Total irradiation at 1.0; 2.5 and 5.0 Gy by protons with the average energy of 170 MeV was conducted in a level medical beam of the phasotron at the Joint Institute of Nuclear Investigations. Targets were 2 points of in-depth dose distribution, i.e. beam entrance of the object, and modified Bragg peak. As a physical protector, the comb filter increases linear energy transfer (LET) of 170 MeV entrance protons from 0.49 keV/μm to 1.6 keV/μm and, according to the bone marrow test, doubles the biological effectiveness of protons when comparing radiation doses that cause 37% inhibition of blood cell formation in the bone marrow. Physical protection increases dose rate from 0.37 Gy/min for entrance protons to 0.8 Gy/min for moderated protons which more than in thrice reduces time of irradiation needed to reach an equal radiobiological effect.
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