Hlavní stanovisko práce: Nádorové buněč- né linie a na jejich základě odvozené progresivní série představují jeden z klíčových experimentálních nástrojů k objasnění základních biologických mechanizmů karcinogeneze, včetně terapeutické odpovědi. Článek poskytuje podrobný přehled aplikačních možností nádorových buněčných kultur ve studiu uroteliálního karcinomu, s důrazem na mechanizmy chemorezistence. Karcinom močového měchýře představuje v naší populaci sedmý nejčastější nádor. Jedná se o biologicky i klinicky velmi heterogenní skupinu onemocnění, se dvěma základními skupinami představovanými povrchovými papilárními karcinomy na jedné straně a svalově invadujícími nádory na druhé straně. Karcinom močového měchýře patří mezi relativně dobře in vitro kultivovatelné typy nádorů, s více než 50 dostupnými etablovanými nádorovými buněčnými liniemi, většina z nich byla nicméně odvozena od nádorů pozdního stadia progrese, zatímco buněčných linií odvozených z časných karcinomů je pouze několik. Studium ná- dorové progrese v experimentálních modelových systémech buněčných kultur probíhá často s využitím tzv. progresivních sérií buněčných linií, kdy studujeme současně několik buněčných linií totož- ného genetického pozadí, z nichž každá odpovídá jinému stadiu progrese nádoru. Prakticky všechny progresivní série uroteliálního karcinomu mají experimentální charakter, kdy z klinického nádoru je odvozena pouze tzv. mateřská buněčná linie, a dceřiné buněčné linie odpovídající pokročilejším stadiím progrese jsou odvozeny experimentálně, ať už in vitro (tj. postupy buněčné kultivace) nebo in vivo (tj. spontánní progresí po transplantaci do vhodného zvířecího hostitele). Důležitou variantou takových progresivních sérií buněčných linií je odvození chemorezistentních dceřiných linií selekcí rezistentních klonů po aplikaci studovaného cytostatika dané mateřské buněčné linii. Tato specifická varianta progresivních sérií nádorových buněčných linií může podstatně přispět k našemu pochopení různých biologických mechanizmů terapeutické rezistence nádorů. Důležitým poznatkem v této oblasti je, že u většiny chemorezistentních sérií nádorových buněčných linií dochází k paralelní- mu vývoji několika mechanizmů chemorezistence současně. Vedle této experimentální roviny poskytují chemorezistentní nádorové buněčné linie i významné preklinické modely testování nových terapeutických možností zaměřených na obnovení chemosenzitivity, Major statement: Cancer cell lines and progression series thereof represent a crucial experimental tool to unravel basic biological mechanisms of carcinogenesis, including therapeutic response. The article gives an overview of current cell culture models of urothelial carcinoma, focusing on chemoresistance mechanisms. Urothelial bladder carcinoma is the seventh most frequent tumor type in our population. From both biological and clinical points of view, it represents a very heterogeneous group of cancers, from non-muscle-invasive superficial papillary carcinoma to muscle-invasive carcinoma as the two major subtypes. Cell culture of urothelial carcinoma is relatively feasible, with more than 50 established tumor cell lines. Most of them were derived from late stage muscle-invasive tumors. In contrast, cell lines derived from early stages and/or papillary superficial tumors are relatively scarce. Studying tumor progression is largely facilitated by use of progression cell line series – an array of several cell lines established on the same genetic background with gradually increasing transformation status. All available progression series of urothelial carcinoma cell lines have been experimentally established either by various in vitro manipulations or in vivo, following a spontaneous progression of an original cancer cell line after its introduction into a suitable host animal. An important variant of cancer cell line progression series is provided by derivation of chemoresistant daughter cell lines after administration of cytostatics to a chemosensitive parental cell line. This specific variant can substantially contribute to our understanding of various biological mechanisms of chemoresistance. An important new finding in this respect is the fact that in many if not all chemoresistant daughter cell lines, several biologically distinct chemoresistance mechanisms seem to be co-expressed. In addition to these entirely experimental applications, such chemoresistant cancer cell lines can provide valuable preclinical models to test new therapeutic options aimed at recovery of chemosensitivity., Michaela Kripnerová, Jiří Hatina, and Literatura
This article presents a study of the state of vegetative balance and prognostic possibilities of quantitative parameters of functional activity of VNS to estimate a state of bodily adaptive reserves in children with severe BA. Bronchial asthma, being one of the most common chronic diseases in childhood, requires further research into predisposing and causally-significant factors, mechanisms of pathogenesis and peculiarities of a clinical course, improvement of methods of diagnostics, treatment, and prevention. Great importance in the development of bronchial asthma in children is given to genetically-fixed functional insufficiency of barrier tissues of the respiratory system, increased ability to synthesize allergic antibodies and produce certain cytokines, high bronchopulmonary sensitivity to mediators of allergic inflammation, lowered sensitivity of 3g-adrenoreceptors to endogenous catecholamins, changes in immunologic responsiveness, and disorder of neuroendocrinal regulation of immune responses. Implementation of genetic predisposition to bronchial asthma development is promoted by influence of adverse environmental factors., Hurmatoy Khankeldieva, Ibrohim Alimjanov, Habiba Negmatshaeva, Mavjuda Abdullaeva, Temur Tojiboev, Marifat Ganieva, and Literatura
Text cílí k objasnění nutnosti ontického a ontologického hlediska při diagnostice, terapii a prevenci chronického únavového syndromu (CFS – chronic fatiuge syndrome). Onticita vychází z biologizujícího medicínského pohledu na lidské tělo v nároku metodologie „clare et distincte“, který však nepostačuje k objasnění kontextu a zabraňuje porozumění obtíže daného člověka v rovině habituální., The text is aimed to clarify the need of ontic and ontological point of view in the diagnosis, treatment and prevention of chronic fatigue syndrome (CFS – chronic fatigue syndrome). Onticity is based on biological medical viewpoint on the human body according to methodology „clare et distincte“ which is however not sufficient to clarify the CFS context and it does not allow to understand the specific person habitual difficulties., Kalábová H., and Literatura
Assaultive acts committed by people with a mental illness is a major public health issue that affects patients with their families, law enforcement authorities, and the public at large. Failure to provide treatment is in fact a major predictor of assaultive acts in patients with schizophrenia living in the community. Considering that the indigenous ethnic groups of Central Asia have similar sociocultural characteristics, these factors may be reflected in individuals with schizophrenia who have committed serious assaultive acts in Uzbekistan. Objectives: The aim of the work was to identify the sociocultural and clinical characteristics of schizophrenic representatives of indigenous ethnic groups of Central Asia who have committed violent crimes in Uzbekistan and have been found insane in regard to their offence, and to compare these subjects to ones belonging to the other ethnic groups. Material and methods: The data were collected in 2010–2013 in the Tashkent High Security Psychiatric Hospital via face-to-face interviews and also from the patients’ charts and from forensic psychiatric examination statements. Results: The sample consisted of 201 individuals. The sample was 90.1 percent (n = 181) male, with a predominance of the paranoid schizophrenia subtype according to the ICD-10 criteria. Of the subjects, 174 ones (86.6%) were representatives of the indigenous ethnic groups of Central Asia, and 27 ones (13.4%) were representatives of other ethnic groups. The duration of illness among the subjects belonging to the indigenous ethnic groups of Central Asia was less than in the other group; the individuals were rarely referred to psychiatric care because of the popularity of alternative medicine and the stigma attached to mental illness. A positive correlation between violence and various psychotic symptoms, such as delusions, hallucinations, and thought disorder, has also been demonstrated in this group. European Medical, Health and Pharmaceutical Journal ISSN 1804-5804 Conclusions: Sociocultural characteristics, such as delayed referral for psychiatric care because of the popularity of alternative medicine and the stigma attached to mental illness among the indigenous ethnic groups of Central Asia, frequently factor into committing serious acts of assault because of developing psychotic symptoms at the early stages of disease despite their sufficient socioenvironmental adaptation., Saida Yеshimbetova, Bulat Chembaev, and Literatura
The aim of our study was to determine the significance of lymphocyte-platelet adhesion (LPA), interleukins, transforming included 139 pregnant women aged between 17 and 27 years (21.3±4.22 years). GH was diagnosed in 119 women after 20 weeks of pregnancy. 20 patients (control group) were with physiological course of pregnancy. The distribution of patients by groups was carried out according to the level of blood pressure (BP) in accordance with ICD-10 (Geneva, WHO, 2002). The survey was conducted at the moment of detection pregnancy from 7 to 10 weeks and in dynamics of I, II and III trimesters of gestation. In the dynamics of gestation, were studied the number of desquamated endothelial cells circulating in the systemic circulation (CECs), nitrates levels, the adhesion of platelets by estimation their ability to form co-aggregates with lymphocytes by determining the percentage of lymphocytes aggregates with thrombocytes (lymphocyte-platelet plugs), at risk of hypertensive disorders, especially after 20-22 weeks of gestation and later, lymphocytes ability to platelets adhesion is rose, the concentrations of pro-inflammatory cytokines and NO level are increased. The direct relationship indicates their importance in the pathogenesis of hypertensive disorders in pregnant women., Salomat Aleksandrovna Matyakubova, and Literatura
More than half of all of the children in the world, which die before the age of five, die in Africa. Wider availability of several highly effecti - ve interventions such as oral rehyd - ration therapy in cases of diarrhoea could prevent large proportion of these child deaths. Unfortunately these interventions are usually not available in African countries. Ho - wever both availability of different life-saving health interventions and child mortality varies a lot across African countries. The purpose of this article is to explore what are determinants of child mortality and availability of these interventions in Africa. Both a review of existing research and a statistical analysis of data from 41 African countries point to the quality of governance and control of corruption as the most significant determinant of health system performance and availability of these life-saving interventions in Africa., Jan Klusáček, and Literatura