Undifferentiated sarcoma of the pericardium after radiation therapy for Hodgkin's lymphoma
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01.01.2018 |
Fomin V.
Kogan E.
Chichkova N.
Komarov R.
Fominykh E.
Shchedrina I.
Morosova N.
Karseladze A.
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Terapevticheskii Arkhiv |
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0 |
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© 2018 Media Sphera Publishing Group. All rights reserved. Primary sarcomas of the pericardium are extremely rare malignant tumors of the heart. The incidence of sarcoma increases after radiation therapy in the field of breast. The specific features of this case report are the difficulties in diagnostics of undifferentiated spindle-cell sarcoma of the pericardium and the connection between the disease and the radiation therapy for Hodgkin's lymphoma.
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Body composition in adolescents with bronchial asthma combined with overweight
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01.01.2018 |
Kuzina E.
Spivak E.
Golubeva A.
Achkasov E.
Mozzhukhina L.
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Voprosy Detskoi Dietologii |
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0 |
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© 2018 Dynasty Publishing House. All rights reserved. The objective: To give a characteristic of body composition in adolescents with atopic bronchial asthma combined with overweight, and to determine the impact of its disorders on the degree of disease control. Patients and methods: Bioimpedance analysis of the body composition was performed in 168 adolescents aged 12-17 years, including 68 patients with mild bronchial asthma in the remission stage and in combination with overweight, 50 overweight adolescents without asthma and 50 healthy same-age peers. Bioimpedance characteristics were compared with the degree of controlling the symptoms of disease. Results: As has been found, adolescents with atopic bronchial asthma combined with overweight are characterised by significant changes in the body composition, which is manifest by higher fat tissue (on average 156.8 ± 21.3% with respect to the norm), total body water and extracellular fluid (127.0 ± 8.1% and 112.3 ± 5.9%, respectively), lower active cell (to 92.8 ± 10.2%) and skeletal muscle mass (to 96.9 ± 6.2%). The degree of the above disorders of body composition was higher in patients with incomplete asthma control. Conclusion: Disorders of body composition in adolescents with bronchial asthma reflect a decreased physical activity, shifts in water-electrolyte balance and protein deficiency. Worsening of body composition is associated with loss of asthma control.
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Differences between cerebrovascular effects of 5-hydroxyadamantane-2-one, nimodipine and S-amlodipine nicotinate in the hemorrhagic and ischemic model damage of rat brain
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01.01.2018 |
Mirzoyan R.
Gan'shina T.
Kim G.
Kurdyumov I.
Maslennikov D.
Kurza E.
Gorbunov A.
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Eksperimental'naya i Klinicheskaya Farmakologiya |
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1 |
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© 2018 Izdatel'stvo Meditsina. All rights reserved. The cerebrovascular effects of 5-hydroxyadamantane-2-one (100 mg/kg, i.v.), nimodipine (0.03 mg/kg, i.v.), and S-amlodi- pine nicotinate (0.1 rag/kg, i.v.) were compared and found to differ significantly. While G ABA-ergic 5-hydroxyadaman- tan-2-one and slow calcium channels blocker nimodipine cause a pronounced increase in cerebral blood supply under conditions of global transient ischemia of the brain, their activity in modeling hemorrhagic stroke is significantly lower. At the same time, S-amlodipine nicotinate equally improves cerebral circulation in both hemorrhagic and ischemic brain damage, i.e., the cerebrovascular effect of S-amlodipine nicotinate in the hemorrhagic stroke model is superior to that of nimodipine and 5-hydroxyadamantan-2-one. This is due to a distinguishing feature of the of S-amlodipine nicotinate action, which, in contrast to 5-hydroxyadamantan-2-one and nimodipine, has a binary vasodilating effect on cerebral vessels: (i) blocking slow calcium channels and (ii) stimulating GABAA-receptors.
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Optimal time of surgery for acute adhesive small bowel obstruction
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01.01.2018 |
Sazhin A.
Tyagunov A.
Larichev S.
Lebedev I.
Makhuova G.
Marchenko I.
Polushkin V.
Sazhin I.
Nechay T.
Ivakhov G.
Titkova S.
Anurov M.
Gasanov M.
Kolygin A.
Mirzoyan A.
Glagolev N.
Kurashinova L.
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Khirurgiia |
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0 |
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AIM: To define optimal terms of surgery for acute adhesive non-strangulatory small bowel obstruction.MATERIAL AND METHODS: The analysis included 703 publications from e-LIBRARI.RU (342 works) and NCBI (361 works) databases for acute adhesive intestinal obstruction. The vast majority of articles presented retrospective analysis of single-center experience.RESULTS: It has been established that short course of medication is predominantly used for acute adhesive intestinal obstruction in the Russian Federation. International studies point 2-5 days for conservative treatment. The advantages and disadvantages of short and long courses of medication were analyzed. Therefore, multicenter, prospective, randomized trial 'Comparison of early operative treatment (12-hour medication) and long-term conservative treatment (48 hours) for acute adhesive small bowel obstruction' (COTACSO) was planned and registered (Unique Protocol ID: 14121729). The study protocol involves clinical, laboratory and instrumental exclusion of strangulation, randomization and conservative treatment of 2 groups of patients for 12 and 48 hours. Patients will undergo surgical interventions if obstruction will be present by that date. The main endpoint is mortality rate in both groups. The end of the study is December 2020.
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Vaccinal prevention of infectious diseases in adults
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01.01.2018 |
Briko N.
Feldblium I.
Subbotina K.
Bikmieva A.
Tsapkova N.
Boiko E.
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Jurnal Infektologii |
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0 |
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© 2018 Interregional public organization Association of infectious disease specialists of Saint-Petersburg and Leningrad region (IPO AIDSSPbR). All rights reservbed. The results of foreign and Russian author's researches about immunization of adult population are presented in article. The analysis of the vaccinal prevention state of infectious diseases in adults in different countries of the world (national guidance on adults immunization, coverage of preventive vaccinations, financing mechanisms) is given. The tasks of improving immunization in adult population of Russia are defined.
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Stimulation of the specific conductivity of the biocompatible nanomaterial layers by laser irradiation
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01.01.2018 |
Ichkitidze L.
Glukhova O.
Savostyanov G.
Gerasimenko A.
Podgaetsky V.
Selishchev S.
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Proceedings of SPIE - The International Society for Optical Engineering |
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0 |
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© 2018 SPIE. The conductivity of layers (thickness ∼ 0.5-20 μm) of composite nanomaterials consisting of bovine serum albumin (BSA) with single-walled carbon nanotubes (SWCNTs) has been studied. The BSA/SWCNT composite nanomaterial was prepared according to a route map, some steps of which are: the preparation of an aqueous dispersion based on BSA and SWCNT; preparation of substrates; deposition of BSA/SWCNT dispersion on substrates; application of water paste from SWCNT on substrates; irradiation of layers by lasers when they were in a liquid state; drying of samples; carrying out electrical and temperature measurements. Half of the layer was covered with a light-tight hollow box and the other half of the layer was laser irradiated. The laser irradiation of the layer was carried out for about 20 sec, at which time the layers completely became dry, while the other half of the layer remained in liquid. Conductivity was increased (70 ÷ 650) % by laser irradiation of the layers when they were in the liquid state. Maximum values of specific conductivity for BSA/SWCNT-1 S/m layers, and for layers SWCNT - 70 kS/m. The investigated electrically conductive layers of 99 wt.% BSA/0.3 wt.% SWCNT are promising for medical practice.
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Liver transplantation from sexagenarian and older
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01.01.2018 |
Gautier S.
Kornilov M.
Miloserdov I.
Minina M.
Kruglov D.
Zubenko S.
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Vestnik Transplantologii i Iskusstvennykh Organov |
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0 |
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© 2018 Russian Transplant Society. All rights reserved. Donor organs shortage leads to extending criteria for deceased liver donation in the whole world. Aim: To compare results of deceased donor liver transplantation (DDLT) depending of donor age over 60 years old. Materials and methods: The study includes 390 DDLT from January 2010 to November 2017. All liver donors separated by age for two groups: I - 60 years and older (n = 26); II - younger than 60 years (n = 364). All donors were standardized by demographic, laboratory fi ndings and inotropic drug requirement. Results: no difference between both groups in severity of ischemia-reperfusion injury, ICU or in-hospital staying (median 2 and 7,5 days respectively) was found. There is also no difference between biliary or vascular complication rate. 5-year actuarial survival rate found no difference between both groups (I: 70%: II: 76%, p = 0,54). Conclusion. Using grafts from donors older than 60 years don't worsen early and late results of DDLT. Care should be taken to avoid other risk factors (cold ischemia time, warm ischemia time).
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The role of innate immunity receptors in infectious diseases and maintenance of organism homeostasis
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01.01.2018 |
Karaulov A.
Afanasiev S.
Aleshkin V.
Bondarenko N.
Voropaeva E.
Afanasiev M.
Nesvizhsky Y.
Aleshkin A.
Borisova O.
Pylev L.
Urban Y.
Bochkareva S.
Rubalsky O.
Voropaev A.
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Infektsionnye Bolezni |
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0 |
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© 2018 Dynasty Publishing House. All rights reserved. The systematic review provides a justification for the value of innate immunity as an initial, necessary and determinant stage in the development of adaptive immunity. The participation of TLRs as a leading component of PRRs-system in maintaining natural congenital anti-infection resistance and homeostasis of the organism, in launching and dynamics of development of adaptive immunity to pathogens of infectious and non-infectious genesis was studied in detail. The importance of the influence of these pathogens on the homeostasis of the organism, on the formation of disturbances in anti-infective resistance at the organism and local levels, revealing new pathophysiological and immunological pathogenetic mechanisms of the development of these pathological processes is established. The colossal gap between fundamental studies of the biology and morphology of microorganisms and clinical studies of the diseases they cause is shortening. In an accessible form, explanations are provided for the absence of symptoms, the possibility of atypical manifestations, and the asymptomatic course of infection. There are new wide opportunities to improve and enhance the information content and personalization methods of diagnosis, treatment and prevention, as well as the creation of pharmaceuticals that act detrimental to all forms of cycle of development of pathogens, and new immunomodulatory drugs for the most effective treatment and prevention of diseases.
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The impact of adequate psychopharmacotherapy on the efficiency of treatment in patients with rheumatoid arthritis
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01.01.2018 |
Abramkin A.
Lisitsyna T.
Veltishchev D.
Seravina O.
Kovalevskaya O.
Nasonov E.
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Nauchno-Prakticheskaya Revmatologiya |
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© 2018 Ima-Press Publishing House. Mental disorders (MDS) of the anxiety-depressive spectrum (ADS) and cognitive impairment (CI) substantially deteriorate the course and efficiency of therapy for rheumatoid arthritis (RA). There have been practically no studies on the impact of psychopharmacotherapy (PPT) for MDS on the efficacy of standard disease-modifying antirheumatic drugs (DMARDs) and biological agents (BAs). Objective: to investigate the impact of adequate PPT for MDS of ADS on the efficacy of DMARDs and BAs in patients with RA. Subjects and methods. The investigation included 128 patients (13% men and 87% women) with documented RA in accordance with the 1987 American College of Rheumatology (ACR) criteria. The patients' mean age was 47.4}0.9 years; the median duration of RA was 96 [48; 228] months. DAS28 averaged 5.34}0.17. 75.1% of the patients received DMARDs. The diagnosis of MDS was based on the ICD-10 codes, by applying a semi-structured interview and the Hospital Anxiety and Depression Scale. Changes in the pattern and severity of ADS were evaluated using the Hamilton Anxiety Scale and the Montgomery-Asberg Depression Rating Scale. Clinical and psychological procedures were used to diagnose CI. At baseline, ADS was detected in 123 (96.1%) patients: major depression in 41 (32.1%), minor depression in 53 (41.4%), and anxiety disorders in 29 (22.6%). CI was diagnosed in 88 (68.7%). PPT was offered to all the patients with MDS; 52 agreed to treatment and 71 refused. The following therapeutic groups were identified according to the performed therapy: 1) DMARDs (n = 39); 2) DMARDs + PPT (n = 43); 3) DMARDs + BAs (n = 32); 4) DMARDs + BAs + PPT (n = 9). The dynamics of MDS and the outcomes of RA were estimated in 112 (91.0%) and in 83 (67.5%) of the 123 patients at one-and five-year follow-ups, respectively. The efficiency of RA therapy was evaluated from the changes in DAS28 and SDAI. Results and discussion. One year later, the patients who had received the complete cycle of PPT and took DMARDs achieved a satisfactory effect twice more frequently (58.1 and 32.3%, respectively; relative risk (RR) = 0.53; 95% confidence interval (CI), 0.2-1.39; p = 0.024) and did not respond to therapy 3 times less often (21.0 and 58.1%, respectively; RR = 2.41; 95% CI, 0.87-6.71; p = 0.001) according to the EULAR criteria than those who had refused PPT. The patients with MDS who received DMARDs + PPT during one year were unresponsive to therapy significantly less frequently than those who received DMARDs and BAs without PPT (21 and 44.8%, respectively; RR = 0.6; 95% CI, 0.21-1.7; p = 0.029). After 5 years of follow-up, the probability of no response to RA therapy in MD patients who received only DMARDs was 3.6 times higher than in those who had PPT (66.7% and 10.4%, respectively; RR = 3.58; 95% CI 0.82-15.5; p < 0.001). The patients adequately treated with DMARDs and BAs for MDS according to the DAS28 showed 1.3-fold more frequently good and satisfactory results (100 and 76.2%, respectively; p = 0.14) than those who refused PPT, but these differences were not statistically significant because the DMARD+BA+PPT group was small. Five-year follow-up indicated that DAS28 remission was more common in the patients receiving DMARDs and PPT than in those who had DMARDs and no PPT (34.5 and 8.3%, respectively; RR = 1.79; 95% CI, 0.34-9.24; p = 0.024). DAS28 remission was somewhat more frequently observed among the patients receiving DMARDs, BAs, and PPT than among those taking DMARDs and BAs (33.3 19.0%, respectively; RR = 1.64; 95% CI, 0.28-9.57; p = 0.34), but these differences were insignificant. Remissions according to the 2011 ACR/EULAR criteria were achieved by only the patients having DMARDs and PPT (6.9% and 13.8% after 1 and 5 years, respectively). Conclusion. Adequate treatment of MDS in RA patients results in a significant increase in the efficiency of antirheumatic therapy.
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Mystery of childbearing in myasthenia gravis: Factors affecting the course of the disease during pregnancy and the risks of development of transient neonatal myasthenia. A unique case of the birth of a healthy child in a couple of patients with myasthenia
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01.01.2018 |
Shcherbakova N.
Khrushcheva N.
Ogurtcova N.
Shabalina A.
Kostyreva M.
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Nevrologicheskii Zhurnal |
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0 |
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© 2018 Izdatel'stvo Meditsina. All rights reserved. The problem of childbearing in patients with myasthenia gravis (MG) is extremely important, since the disease most often affects women in the reproductive period. Has not yet been determined neither the prognostic criteria for myasthenia exacerbation during pregnancy, nor the predictors for the development of the transient neonatal myasthenia gravis (TNM). The article analyzes the literature data from the first descriptions of pregnancy in patients with myasthenia and TNM until the present days. The evolution of the concept of the role of a high titer of antibodies to acetylcholine receptors (anti-AChR Ab) in the development of exacerbations of MG in the mother and TNM in her newborn is shown. The role of Ab against γ-subunits of AChR in the development of arthrogryposis and THM is discussed. The importance of planning the pregnancy in myasthenic mothers is emphasized. These observations show that the same woman has either a favorable course of MG with the birth of a healthy child, or has a severe exacerbation until the postpartum myasthenic crisis with the birth of baby with TNM depending on quality of remission before pregnancy. Based on the literature data and own experience, the indisputable role of thymectomy in the prevention of exacerbations of MG and TNM is shown. Own observation of cases of TNM demonstrates the crucial role of neostigmine test in the recognizing of «floppy baby» syndrome. For the first time in Russia, a study of anti-fetal/anti-adult AChR Ab ratio in the umbilical cord blood was conducted. For the first time in the world, a unique case of the birth of a healthy child in a couple of patients with juvenile MG is presented. The husband suffering of the severe refractory MG with elevated titre of anti-AChR Ab up to 20.8 nmol/l and a lot of congenital stigmas of dysembryogenesis. The wife had a mild course of MG. She was carefully prepared for pregnancy by thymectomy and glucocorticoid-therapy and had a stable condition for more than 10 years at the time of pregnancy. The titer of anti-AChR Ab was relatively low (9.0 nmol/L), however, the pool of anti-AChR Ab in the umbilical cord blood mainly contained anti-fetal AChR AB (92%). This example shows that it is the quality of remission of the mother's MG at the time of pregnancy determines the course of the disease during pregnancy and the risks of TNM. This case allows us to consider genetic factors as secondary and once again emphasizes the autoimmune nature of myasthenia gravis.
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Headache in elderly patients with chronic cerebral ischemia: Outpatient diagnosis and treatment
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01.01.2018 |
Platov M.
Kosivtsova O.
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Nevrologiya, Neiropsikhiatriya, Psikhosomatika |
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0 |
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© 2018 Ima-Press Publishing House. All rights reserved. Chronic cerebral ischemia (CCI) is one of the most common diagnoses in middle-aged and elderly patients in the practice of an outpatient neurologist. Unfortunately, the diagnosis of CCI in these patients is often established only on the basis of complaints of headache, dizziness, instability during walking, and lower mood. At the same time, other diseases that cause these symptoms are not diagnosed, patients do not receive treatment, which considerably worsens quality of life and leads to anxiety and depression. A variety of diseases, such as headache, peripheral vestibular vertigo, depression, Alzheimer's disease, and Parkinson's syndrome, are frequently hidden under the diagnosis of CCI. The leading neurological syndrome in CCI is cognitive impairment that can be both moderate and reach the level of dementia. Approximately 40% of patients with chronic cerebrovascular disease complain of headache that is usually caused by mixed primary headache. The management tactics for a CCI patient suffering from headache is aimed at treating primary headache, modifying vascular risk factors, and managing cognitive impairment. The paper discusses the use of choline alphoscerate in patients diagnosed with CCI.
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Immune checkpoint inhibition and autoimmunity: Rheumatological problems
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01.01.2018 |
Nasonov E.
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Nauchno-Prakticheskaya Revmatologiya |
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1 |
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The paper deals with the mechanisms of a T-cell immune response, which depends on the balance between costimula-tory and coinhibitory signals that have been called as immune checkpoints (ICP). The imbalance of T-cell activation within ICTs (CTLA4/CD28 and PD1/PD1L) is considered to be a fundamental mechanism not only of autoimmune disease, but also impaired antitumor immunity underlying the development of malignant tumors. The use of monoclonal antibodies against negative regulatory ICTs (CTLA4, PD1, and PD1L) is a major achievement in the treatment of malignant neoplasms in the early 21st century. However, since CTLA4 and PD1 control the activation of auto-reactive T cells, the inhibition of these ICTs is associated with the development of autoimmune disease that is defined as immune-mediated adverse even. The paper considers the clinical manifestations of IMAR, primarily rheumatic ones and discusses the prospects of pharmacotherapy from the standpoint of achievements of modern rheumatology.
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Ectopic pregnancy associated with fallopian tube adenocarcinoma
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01.01.2018 |
Levakov S.
Sheshukova N.
Bolshakova O.
Tigieva A.
Dobryakov A.
Obukhova E.
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Akusherstvo i Ginekologiya (Russian Federation) |
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0 |
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© Bionika Media Ltd. Background. Fallopian tube cancer (FTC) is an extremely rare, difficult diagnostic malignant disease of the female reproductive system. The world literature describes single cases of FTC concurrent with tubal pregnancy. Description. The paper describes a clinical case of diagnosed FTC after surgical treatment for tubal pregnancy. Patient P., aged 34 years, who had complained of vaginal bleeding and tensive pain in the right iliac region, was admitted to the Bakhrushins Brothers City Clinical Hospital. After complete clinical and laboratory examinations diagnosed right ectopic pregnancy, emergency surgical treatment was performed as laparoscopy and rightsided tubectomy. The postoperative period was uncomplicated; the patient was discharged home in satisfactory condition. Histological examination revealed the growth of well-differentiated fallopian tube adenocarcinoma and confirmed the diagnosis of ectopic pregnancy. The diagnosis was verified by immunohistochemical study Conclusion. Preoperative diagnosis of FTC is extremely difficult; therefore the elaboration of a clear algorithm for the diagnosis and treatment of this condition is one of the important tasks in gynecologic oncology.
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Giant ovarian mucinous cystadenoma in a 54-year-old woman
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01.01.2018 |
Chuprynin V.
Buralkina N.
Chursin V.
Asaturova A.
Katkova A.
Zhurba A.
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Akusherstvo i Ginekologiya (Russian Federation) |
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0 |
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© Bionika Media Ltd. Background. Ovarian cancer develops from benign tumors in 80% of cases during long-term follow-up. According to the literature, the incidence of giant ovarian cystadenoma is extremely low. There are difficulties in verifying these ovarian tumors. Description. The paper describes a rare clinical case of a 54-year-old patient with giant ovarian cystadenoma. It depicts the patient’s clinical, medical history, laboratory, and instrumental data and demonstrates the technical complexities of surgery and the features of postoperative management. Conclusion. The early diagnosis and timely treatment of ovarian tumors will be able to avoid technically difficult surgical interventions and to minimize postoperative complications, which will substantially improve the prognosis of the disease. Such operations should be performed by a surgeon having extensive surgical experience and high qualification.
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Physical and computer-based modeling in internal temperature reconstruction by the method of passive acoustic thermometry
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01.01.2018 |
Anosov A.
Subochev P.
Mansfeld A.
Sharakshane A.
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Ultrasonics |
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1 |
Ссылка
© 2017 Elsevier B.V. The purpose of this work was to investigate experimentally the capacity of passive acoustic thermometry (PAT) for the reconstruction of 1D, time-variable distributions of the internal temperature. Because in the PAT a noise signal is measured, a considerable integration time (about one minute) is required to attain an acceptable error level (0.5–1 K). To optimize the time, an algorithm was proposed to take account of the fact that the temperature satisfied the heat equation. The problem was reduced to that of determining two parameters (initial temperature and thermal diffusivity) of the object under study. The desired parameters were considered constant and were not determined anew after each measurement; instead, their values were refined using all the previous measurements. The proposed algorithm was tested experimentally (where the temperature was reconstructed in a model object, a slab of polytetrafluoroethylene) and investigated by means of computer modeling. The duration of one measurement was about 5.5 s. As a result, an error of the temperature reconstruction of about 0.5 K, acceptable for medical applications, was attained after 30–60 s (depending on the depth) from the beginning of the measurements. After that, temperature distributions can be reconstructed after each measurement without loss of the reconstruction accuracy. The proposed method can be used to control the temperature under a local hyperthermia, lasting 1 min and more, of the human body.
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the role of molecular genetic alterations in sensitivity of the adjuvant intravesical therapy for non-muscle invasive bladder cancer
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01.01.2018 |
Mikhaylenko D.
Sergienko S.
Zaborsky I.
Safiullin K.
Serebryany S.
Safronova N.
Nemtsova M.
Kaprin A.
Alekseev B.
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Onkourologiya |
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1 |
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© 2018 ABC-press Publishing House. All rights reserved. Bladder cancer (BC) is represented by non-muscle-invasive forms at the stage Ta, T1, CIS (NMBC) in 75 % of cases. The gold standard of treatment of NMBC patients is transurethral resection, but its implementation does not always allow the patient to be relieved of the recurrence of the disease. In this regard, patients with a low risk of progression after transurethral resection are administered by intravesical chemotherapy, with high risk (T1G2/3) – using instillation with BCG (Bacillus Calmette–Guerin) vaccine. Searching of NMBC markers for laboratory diagnostics, which would help to determine sensitivity or resistance to the planned type of adjuvant therapy remains an actual problem. The data published mainly in the last 5–7 years about genetic predictors of the response to adjuvant chemotherapy and, to a greater extent, immunotherapy with BCG vaccine, are reviewed in this work. Allele combinations in the genes involved in immune response, xenobiotic biotransformation and other loci that are associated with the response to the adjuvant NMBC therapy in meta-analyzes are systematized. Also, expression profiles of mRNA, microRNA and proteins, as well as panels of methylated loci associated with the effectiveness of chemotherapy and immunotherapy of NMBC are considered. It was demonstrated that the somatic mutations sequencing in the primary tumor and the total mutational load using high-throughput sequencing technologies (NGS) identified a number of potential prognostic markers. Perhaps, the mutational load will be more widely used as a highly informative predictor of immunotherapeutic effect in BC: BCG therapy of NMBC and BC targeted therapy using the inhibitors of immune control points, after the standardization of the analysis. This review is intended to oncologists, geneticists, molecular biologists, urologists, pathologists and other specialists working in the field of molecular genetics in oncological urology.
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The preferable binding pose of canonical butyrylcholinesterase substrates is unproductive for echothiophate
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01.01.2018 |
Zlobin A.
Zalevsky A.
Mokrushina Y.
Kartseva O.
Golovin A.
Smirnov I.
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Acta Naturae |
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1 |
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© 2018 Park-media, Ltd. In this paper, we, for the first time, describe the interaction between the butyrylcholinesterase enzyme and echothiophate, a popular model compound and an analogue of the chemical warfare agents VX and VR, at the atomistic level. Competition between the two echothiophate conformations in the active site was found using molecular modeling techniques. The first one is close to the mode of binding of the substrates of choline series (butyrylcholine and butyrylthiocholine) and is inhibitory, since it is unable to react with the enzyme. The second one is characterized by a significantly worse estimated binding affinity and is reactive. Thus, echothiophate combines the features of two types of inhibitors: competitive and suicidal. This observation will help clarify the kinetic reaction scheme in order to accurately assess the kinetic constants, which is especially important when designing new butyrylcholinesterase variants capable of full-cycle hydrolysis of organophosphorus compounds.
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Efficacy of eradication therapy with stimbifid plus in experimental acute helicobacter pylori infection in murinemodels and in volunteers
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01.01.2018 |
Chicherin I.
Pogorelsky I.
Darmov I.
Lundovskikh I.
Shabalina M.
Kolevatykh E.
Kozlov P.
Kornaukhov A.
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Infektsionnye Bolezni |
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0 |
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© 2018, Dynasty Publishing House. All rights reserved. Objective: to evaluate the possibility of creating a human model of acute Helicobacter pylori infection in healthy volunteers after infecting them with a mutant rifampicin-resistant strain of H. pylori KM-11 (Rif R ), to obtain evidence of H. pylori survival and invasion into the gastric mucosa, describe the symptoms, and assess the efficacy of H. pylori eradication therapy with Stimbifid plus. Materials and methods. In our experiments, we used conventional white mice of both genders weighing 18–20 g. The concentration of bifidobacteria, lactobacilli, and Escherichia (CFU) in animal faeces was determined by inoculating tenfold dilutions of biomaterial onto solid media and further counting of bacterial colonies grown after the incubation period. Microorganisms were cultivated in an anaerobic incubator and then identified by morphological evaluation and using biochemical identification kits. We created a murine model of H. pylori infection by oral administration of H. pylori KM-11 (Rif R ) suspensions to immunocompromised mice that had earlier undergone intramuscular administration of dexamethasone. For a human model of H. pylori infection, we selected healthy male volunteers. They took suspensions of H. pylori KM-11 (Rif R ) isolates in isotonic sodium chloride solution. Fecal specimens were collected from volunteers on daily basis during the entire follow-up period and then 2 weeks and 1 month after treatment completion. Fecal suspensions in isotonic sodium chloride solution were inoculated onto the selective hemin-containing solid media with rifampicin at a concentration of 160 µg·mL –1 . The results of this experiment (H. pylori colony count) were used to evaluate the efficacy of H. pylori eradication therapy with Stimbifid plus. Results. Both in vitro experiments and murine models demonstrated high anti-H. pylori activity of Stimbifid plus and its ingredients, restoration of the gastric microbiota, restoration of gastric colonization resistance, and eradication of H. pylori KM-11 (Rif R ). Self-infection with H. pylori KM-11 (RifR) caused acute infection in volunteers. The disease manifested with mild ailment, epigastric discomfort, belching, increased stool frequency, and changes in the color of stool. The detection of H. pylori KM-11 (Rif R ) in the faeces of volunteers and isolation of pure cultures prior to treatment initiation indicated bacterial adhesion to gastric mucosa and survival of microorganisms. Treatment with Stimbifid plus caused gradual decrease in the number of bacteria isolated from feces and their complete elimination by day 11 of therapy. All fecal specimens collected 2 weeks and 1 month after therapy completion from volunteers were negative for H. pylori KM-11 (Rif R ). None of the study participants required in-patient treatment. Conclusion. The results of our experiments obtained in both murine and human models of H. pylori infection will be used for more detailed assessment of this pathological process, clinical manifestations, impact of H. pylori virulence factors on the host, choosing new methods for the prevention and treatment of chronic gastritis caused by H. pylori, and monitoring the efficacy of eradication therapy.
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Photo dynamic adjuvant therapy in complex treatment of patients with portal cholangiocarcinoma
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01.01.2018 |
Zharikov Y.
Pozharskaya A.
Tupikin K.
Baidarova M.
Nikolenko V.
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Medical News of North Caucasus |
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© 2018 Stavropol State Medical University. All Rights Reserved. The review presents the latest achievements in the field of complex adjuvant treatment of patients with portal cholangiocarcinoma. Modern data on the clinical efficacy and benefits of intraduct photodynamic therapy are presented.
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Method of personalized forecasting, preservation, development and health management
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01.01.2018 |
Marasanov A.
Valtseva E.
Minenko I.
Zvonikov V.
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Gigiena i Sanitariya |
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© Izdatel'stvo Meditsina. All rights reserved. In the article, an overview of the information on the method and application technology of SWOT (Strengths, Weaknesses Opportunities, Threats) analysis is presented. The specific characters of the method, the object domain of its application, the task, the methodology are disclosed. An interesting idea is the scheme of the options used to achieve more complete benefit from the method. The strengths and the shortcomings of the SWOT analysis noted by experts in the field of its application are given. Further on, the authors propose an innovative technology for using the SWOT model to develop personalized forecasting, preservation, development, and management of health, based on the provisions of the functional direction of genetics - phenomics. The advantages of technology, the urgency of its application are revealed. The new technology is based on provisions of the development of the theory of the essential adaptation. To ensure the state of health the functioning level of the body's systems must be consistent with the optimality, namely with their response norms, which determine the individual phenotype. In the process of the organism adaptation to the conditions of the external environment, the central nervous system (it's a known fact) and the significant body system (the system with the maximum response norm), determining, respectively, the specific and nonspecific responses of the organism will be released by their activity. In the interaction of body systems, it is important to take the ordering into consideration. Dominant systems can actively involve other systems of the body to the process of adaptation according to the principle of the interaction with them, by strengthening or decreasing their activity. Taking into account the direction of interaction (inhibition, toning), this fact becomes important for understanding the pathogenesis of diseases, their targeted prevention, and treatment. A comprehensive record of the mechanisms of the formation of a specific and nonspecific reaction is used in the interest of identifying and effectively preventing functional disorders in the body. The SWOT analysis technology of personalized forecasting, preservation, development and health management eliminates the main drawbacks of SWOT analysis. On the other hand, the SWOT analysis technology helps to expand the range of application of phenomics, depending on the opportunities and threats of the environment.
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