Cyclic AMP pathway suppress autoimmune neuroinflammation by inhibiting functions of encephalitogenic CD4 T cells and enhancing M2 macrophage polarization at the site of inflammation
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25.01.2018 |
Veremeyko T.
Yung A.
Dukhinova M.
Kuznetsova I.
Pomytkin I.
Lyundup A.
Strekalova T.
Barteneva N.
Ponomarev E.
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Frontiers in Immunology |
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17 |
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© 2018 Veremeyko, Yung, Dukhinova, Kuznetsova, Pomytkin, Lyundup, Strekalova, Barteneva and Ponomarev. Although it has been demonstrated that cAMP pathway affect both adaptive and innate cell functions, the role of this pathway in the regulation of T-cell-mediated central nervous system (CNS) autoimmune inflammation, such as in experimental autoimmune encephalomyelitis (EAE), remains unclear. It is also unclear how cAMP pathway affects the function of CD4 T cells in vivo at the site of inflammation. We found that adenylyl cyclase activator Forskolin besides inhibition of functions autoimmune CD4 T cells also upregulated microRNA (miR)-124 in the CNS during EAE, which is associated with M2 phenotype of microglia/macrophages. Our study further established that in addition to direct influence of cAMP pathway on CD4 T cells, stimulation of this pathway promoted macrophage polarization toward M2 leading to indirect inhibition of function of T cells in the CNS. We demonstrated that Forskolin together with IL-4 or with Forskolin together with IL-4 and IFNγ effectively stimulated M2 phenotype of macrophages indicating high potency of this pathway in reprogramming of macrophage polarization in Th2-and even in Th1/Th2-mixed inflammatory conditions such as EAE. Mechanistically, Forskolin and/or IL-4 activated ERK pathway in macrophages resulting in the upregulation of M2-associated molecules miR-124, arginase (Arg)1, and Mannose receptor C-type 1 (Mrc1), which was reversed by ERK inhibitors. Administration of Forskolin after the onset of EAE substantially upregulated M2 markers Arg1, Mrc1, Fizz1, and Ym1 and inhibited M1 markers nitric oxide synthetase 2 and CD86 in the CNS during EAE resulting in decrease in macrophage/microglia activation, lymphocyte and CD4 T cell infiltration, and the recovery from the disease. Forskolin inhibited proliferation and IFNγ production by CD4 T cells in the CNS but had rather weak direct effect on proliferation of autoimmune T cells in the periphery and in vitro, suggesting prevalence of indirect effect of Forskolin on differentiation and functions of autoimmune CD4 T cells in vivo. Thus, our data indicate that Forskolin has potency to skew balance toward M2 affecting ERK pathway in macrophages and indirectly inhibit pathogenic CD4 T cells in the CNS leading to the suppression of autoimmune inflammation. These data may have also implications for future therapeutic approaches to inhibit autoimmune Th1 cells at the site of tissue inflammation.
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Synthesis and biological evaluation of new water-soluble photoactive chlorin conjugate for targeted delivery
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20.01.2018 |
Otvagin V.
Nyuchev A.
Kuzmina N.
Grishin I.
Gavryushin A.
Romanenko Y.
Koifman O.
Belykh D.
Peskova N.
Shilyagina N.
Balalaeva I.
Fedorov A.
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European Journal of Medicinal Chemistry |
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7 |
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© 2017 Elsevier Masson SAS A new water-soluble conjugate, consisting of a chlorin-based photosensitizing part, and a 4-arylaminoquinazoline moiety with high potential affinity to an epidermal growth factor receptors (EGFR) and vascular endothelial growth factor receptors (VEGFR), suitable for photodynamic therapy (PDT), was synthesized starting from methylpheophorbide-a in seven steps. An increased accumulation of this compound in A431 cells with high level of EGFR expression, in comparison with CHO and HeLa cells with low EGFR expression was observed. The prepared conjugate exhibits dark and photoinduced cytotoxicity at micromolar concentrations with IC50dark/IC50light ratio of 11–18. In tumor-bearing mice, the conjugate preferentially accumulates in the tumor tissue.
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Internet of Things: Modem paradigm of health care
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08.01.2018 |
Smorodin G.
Kolesnichenko O.
Kolesnichenko Y.
Myakinkova L.
Prisyazhnaya N.
Yakovleva D.
Mazelis L.
Martynov A.
Pulit V.
Danilova D.
Litvak N.
Balandin S.
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Conference of Open Innovation Association, FRUCT |
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4 |
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© 2017 FRUCT. Some results of Data Mining of scientific publication activity in Scopus database and Text Big Data analytics using API access to Google about Information transformation are presented. The whole ecosystem of Internet of Health and its place within Internet of Things are described. System analysis is given about: Big Data market in Health Care, ways of Medical Information Systems development, and the direction of hospitals transition to new condition based on three 'whales' (hybrid Cloud computing, supercomputer and data center). The Internet of Things ecosystem foregrounds some important aspects related to gerontology, genetics, biorhythmology, and gravitational biology. Sociological understanding of people's role in formation of the new high IT dependence reality allows to determine the main vectors of farsighted forecast. The technological evolution can be described as subsequent stages: distribution of IT - automation - Digital transformation and Internet of Things - Big Data analytics - Artificial Intelligence solutions - people connection to Augmented Reality - Context-as-A-Service - NBIC- and GRAIN-technologies - Humanity Plus. The essence of concept 'patient' is changing. Patient transforms into an e-patient (all records about patient have been digitized) and then into Internet-patient with monitoring of health parameters within the Internet of Things surrounding people. Getting Augmented Reality patient is becoming a Digital patient. Augmented Reality methods are already being developed to treat patients. Medicine as part of social structure becomes more diffuse, covering common space of Internet of Things. Medical culture acquires a new value for society. Five measures for successful transformation of Health Care in Russia are recommended in the article.
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Russian guidelines for the management of COPD: Algorithm of pharmacologic treatment
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08.01.2018 |
Aisanov Z.
Avdeev S.
Arkhipov V.
Belevskiy A.
Chuchalin A.
Leshchenko I.
Ovcharenko S.
Shmelev E.
Miravitlles M.
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International Journal of COPD |
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15 |
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© 2018 Aisanov et al. The high prevalence of COPD together with its high level of misdiagnosis and late diagnosis dictate the necessity for the development and implementation of clinical practice guidelines (CPGs) in order to improve the management of this disease. High-quality, evidence-based international CPGs need to be adapted to the particular situation of each country or region. A new version of the Russian Respiratory Society guidelines released at the end of 2016 was based on the proposal by Global Initiative for Obstructive Lung Disease but adapted to the characteristics of the Russian health system and included an algorithm of pharmacologic treatment of COPD. The proposed algorithm had to comply with the requirements of the Russian Ministry of Health to be included into the unified electronic rubricator, which required a balance between the level of information and the simplicity of the graphic design. This was achieved by: exclusion of the initial diagnostic process, grouping together the common pharmacologic and nonpharmacologic measures for all patients, and the decision not to use the letters A–D for simplicity and clarity. At all stages of the treatment algorithm, efficacy and safety have to be carefully assessed. Escalation and de-escalation is possible in the case of lack of or insufficient efficacy or safety issues. Bronchodilators should not be discontinued except in the case of significant side effects. At the same time, inhaled corticosteroid (ICS) withdrawal is not represented in the algorithm, because it was agreed that there is insufficient evidence to establish clear criteria for ICSs discontinuation. Finally, based on the Global Initiative for Obstructive Lung Disease statement, the proposed algorithm reflects and summarizes different approaches to the pharmacological treatment of COPD taking into account the reality of health care in the Russian Federation.
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Analytical and diagnostic aspects of carbohydrate deficient transferrin (CDT): A critical review over years 2007–2017
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05.01.2018 |
Bortolotti F.
Sorio D.
Bertaso A.
Tagliaro F.
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Journal of Pharmaceutical and Biomedical Analysis |
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5 |
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© 2017 Elsevier B.V. The need for investigating alcohol abuse by means of objective tools is worldwide accepted. Among the currently available biomarkers of chronic alcohol abuse, carbohydrate-deficient transferrin (CDT) is one of the most used indicator, mainly because of its high specificity. However, some CDT analytical and interpretation aspects are still under discussion, as witnessed by numerous research papers and reviews. The present article presents a critical review of the literature on CDT appeared in the period from 2007 to 2017 (included). The article is organized in the following sections: (1) introduction, (2) pre-analytical aspects (3) analytical aspects (4) diagnostic aspects (5) concluding remarks. As many as 139 papers appeared in the international literature and retrieved by the search engines PubMed, Web of Science and Scopus are quoted.
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Characterization and Detection of Erythropoietin Fc Fusion Proteins Using Liquid Chromatography-Mass Spectrometry
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05.01.2018 |
Mesonzhnik N.
Postnikov P.
Appolonova S.
Krotov G.
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Journal of Proteome Research |
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3 |
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© 2017 American Chemical Society. Erythropoietin Fc (EPO-Fc) fusion proteins are potential drug candidates that have been designed for the treatment of anemia in humans by stimulating erythrocyte production. Such compounds can be considered performance-enhancing agents that may be used by athletes in endurance sports. This study describes the primary structure of commercially available EPO-Fc based on comprehensive liquid chromatography coupled with mass spectrometry (LC-MS) analysis. A bottom-up approach and the intact molecular weight (MW) measurement of deglycosylated protein and its IdeS proteolytic fractions was used to determine the amino acid sequence of EPO-Fc. Using multiple proteases, peptides covering unknown fusion breakpoints (spacer peptides) were identified. We demonstrated that "spacer peptides" can be used in the determination of EPO-Fc fusion proteins in biological samples using common LC-tandem MS methods.
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Stress-induced depression and reactive schizophrenia
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02.01.2018 |
Smulevich A.
Germanova K.
Chitlova V.
Voronova E.
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International Journal of Culture and Mental Health |
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0 |
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© 2017 Informa UK Limited, trading as Taylor & Francis Group. A number of concepts exist which reveal an interaction between endogenous and psychogenic factors in stress-induced disorders in patients with schizophrenia. These concepts relate to psychological, pathophysiological, and sociological aspects of the problem. In this study we look at the respective states described within the clinical concept of reactive schizophrenia. Materials: Fifty clinical cases were included: 32 females and 18 males, mean age 38.6 ± 12.5. Thirty-three patients (66%) had a diagnosis of ‘schizophrenia’, 17 patients (34%) were diagnosed with ‘schizotypal personality disorder’ according to DSM-5 criteria. The performed examination included a clinical interview, analysis of the current clinical state, analysis of the medical history. Results: From the perspective of concept of ‘reactive schizophrenia’, the subjects of our study can be split into two groups based on their mechanism of development and psychogenic vs. endogenous contributions. These two groups may be characterized as ‘psychogenic provocation of a schizophreniform disorder’ and ‘endogenous provocation of a psychogenic disorder’ respectively. Conclusions: The results observed made it possible to re-establish the hypothesis of ‘reactive schizophrenia’. The principal feature is the specific interaction between endogenous and psychogenic factors, i.e. the psychogenic provocation of endogenous disorders.
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Use of nonbiologic treatments in antihistamine-refractory chronic urticaria: a review of published evidence
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02.01.2018 |
Holm J.
Ivyanskiy I.
Thomsen S.
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Journal of Dermatological Treatment |
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6 |
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© 2017 Informa UK Limited, trading as Taylor & Francis Group. Background: Knowledge of effectiveness and safety of the nonbiologic, nonantihistamine treatments used for chronic urticaria is important as in some cases the principal guideline-recommended drug; omalizumab, has limited effect, side effects or is too expensive or unavailable. Herein, we systematically review the evidence for the use of the nonbiologic treatments in antihistamine-refractory chronic urticaria. Methods: We performed a systematic review of the literature using PubMed and Webofscience and identified studies that reported use of one or more of the nonbiological, nonantihistamine treatment options for chronic urticaria. The studies were evaluated based on study design, number of patients, effect of treatment and safety. Results: We identified 118 studies or case series with 13 different treatments (azathioprine, chloroquine, colchicine, cyclosporine, dapsone, intravenous immunoglobulin (IVIG), methotrexate, montelukast, mycophenolate mofetil, plasmapheresis, sulfasalazine, tranexamic acid and ultraviolet light (UV) A, UVB) totaling 1682 patients. There was a paucity of controlled trials for most of the treatments reviewed albeit the strongest evidence in favor of a beneficial effect in chronic urticaria was, apart from montelukast and cyclosporine, seen for UV therapy and dapsone followed by IVIG. Conclusion: The treatment options reviewed should be seen as potential alternatives in treatment-resistant chronic urticaria where guideline-based selections have failed. However, larger controlled trials are warranted to advance the level of evidence, possibly supporting some treatments’ future recommendation in selected patients.
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