National Repository of Grey Literature 93 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Advanced antibacterial activity testing of candidate newly synthesized compounds
Novotná, Simona ; Konečná, Klára (advisor) ; Kučerová, Marta (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Biological and Medical Sciences Study program: Pharmacy Author: Simona Novotná Supervisor: RNDr. Klára Konečná, Ph.D. Title of diploma thesis: Advanced antibacterial activity testing of candidate newly synthesized compounds Background: The aim of this thesis was to perform an extended study of the antibacterial activity of selected newly synthesized rhodanine derivatives. In this study, activity against clinical isolates of bacterial strains of the genus Staphylococcus and Enterococcus was evaluated. The main part of the work also includes the evaluation of the antibacterial activity of one selected substance in combination with commercially available antibiotics using the checkerboard method. Methods: Evaluation of the antibacterial activity of tested substances was performed using the broth microdilution method according to EUCAST guidelines (with minor modifications). The activity of these substances was evaluated against clinical isolates of bacteria of the genera Staphylococcus and Enterococcus and one Staphylococcus aureus MRSA reference strain (ATCC 43300, CCM 4750). For a selected compound with a demonstrably promising antistaphylococcal effect, the combined effect of this substance was tested with three...
Phylogenetic diversity of culturable prokaryotes from hypersaline environments.
Straková, Dáša ; Jílek, Petr (advisor) ; Konečná, Klára (referee)
Candidate: Dáša Straková Title of diploma thesis: Phylogenetic diversity of culturable prokaryotes from hypersaline environments. Charles University, Faculty of Pharmacy Department of Biological and Medical Sciences University of Sevilla, Faculty of Pharmacy Department of Microbiology and Parasitology Study program: Pharmacy Hypersaline environments are widely distributed habitats characterized by elevated concentrations of salts, mainly represented by aquatic systems and hypersaline soils. Their study has enabled the isolation and characterization of a large number of halophilic microorganisms during the last decades, which are microorganisms that require a high concentration of salts in order to be capable of life and growth. The aim of this work was to continue the initial characterization of halophilic Archaea and Bacteria, previously isolated by Ana Durán-Viseras in 2016 from several water samples from Isla Cristina and Isla Bacuta solar salterns (Huelva, Spain) and from a hypersaline soil located in Odiel Saltmarshes (Huelva, Spain), and to carry out a biodiversity study of these samples. Ana Durán-Viseras started this project and I continued with it during my stay in Sevilla. As a part of the characterization, we sequenced the partial 16S rRNA gene of the isolated strains. For those that...
In vitro screening of novel potentially active antimycotic compounds II
Comová, Kateřina ; Janďourek, Ondřej (advisor) ; Konečná, Klára (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Biological and Medical Sciences Study program: Specialist in Laboratory Methods Candidate: Bc. Kateřina Comová Supervisor: PharmDr. Ondřej Janďourek, Ph.D. Title of diploma thesis: In vitro screening of novel potentially active antimycotic compounds II Key words: yeasts, fungi, antimycotics, resistance, microdilution broth metod, minimal inhibition concentration. The main focus of this thesis is on antifungal resistance and the mechanism of action of selected antifungal agents. The theoretical part of the thesis gives a general overview of the characteristics of microscopic fungi and the diseases they cause. Attention is also paid to antifungal agents that are commonly used in the treatment of fungal infections, as well as those that are currently at various stages of clinical trials. This ties in with the mechanism of action of these compounds, which is also described here. The theoretical part also summarizes the development and principles of antifungal resistance. The theoretical part concludes with the description of the methods used in the determination of in vitro susceptibility of fungal agents to antifungals. The practical part of the thesis describes the procedure of the quantitative broth microdilution method, which...
Growth and control of Pseudomonas aeruginosa in a multi-species biofilm
Hutlas, Andrej ; Kučerová, Marta (advisor) ; Konečná, Klára (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Cardiff University, School of Pharmacy and Pharmaceutical Sciences Study program: Pharmacy Candidate: Andrej Hutlas Consultants: PharmDr. Marta Kučerová, Ph.D. (Charles); Prof. Jean-Yves Maillard (Cardiff); BSc. Katarzyna Ledwoch Ph.D. (Cardiff) Biofilms are a default mode of growth for most bacteria. Microbes encapsulate themselves within a matrix, composed mainly of extracellular polymeric substances. A biofilm can be composed by multiple species. Matrix environment induces various physiological shifts, such as switch to dormant state or expression of biofilm-specific genes. Mature biofilm's heterogeneous, due to differences in spatial microbe distribution and spatial nutrient utilization across the matrix. Matrix provides many advantages to bacteria, like nutrient capture and transfer or protection against extreme conditions. Washbasin U-bend multi-species biofilms were investigated with a special focus on Pseudomonas aeruginosa. This opportunistic pathogen causes nosocomial infections, mainly in immunocompromised patients, with considerable health and socio-economic impacts. A link between sinks and environmental P. aeruginosa contamination has been established. Environmental decontamination may be an approach to lessen aforementioned...
Analysis of protein cargo of extracellualr vesicles isolated from the yeast Candida albicans
Hlubučková, Lucie ; Konečná, Klára (advisor) ; Janďourek, Ondřej (referee)
Charles University Faculty of Pharmacy in Hradec Králové Study program: Pharmacy Candidate: Lucie Hlubučková Consultant: RNDr. Klára Konečná, Ph.D. Title of thesis: Analysis of protein cargo of extracellular vesicles isolated from the yeast Candida albicans Backgroung: The aim of this diploma thesis was to analyze the protein cargo carried in extracellular vesicles released from the yeast Candida albicans (C. albicans), which is one of the most important mycotic agens. Extracellular vesicles (EVs) are utilized as "transport vehicles", for the delivery of effector molecules into extracellular milieu. These molecules and primarilly proteins can play different roles in host-pathogen interactions. Proteins isolated from EVs and identified by proteomic approach were sorted into categories according to their molecular function and localization for the purpose of finding out, which proteins are predominantly distributed via extracellular vesicles into extracellular space after induction of nutrition starvation. Analysis of EVs protein cargo with focus on virulence factors could extend the knowledge about extracellular vesicles and their potential role in pathogenesis. Methods: Chosen C. albicans yeast strain was a clinical isolate strain isolated from a premenopausal women suffering from recurrent...
Advanced antibacterial activity testing of candidate newly synthesized compounds
Novotná, Simona ; Konečná, Klára (advisor) ; Kučerová, Marta (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Biological and Medical Sciences Study program: Pharmacy Author: Simona Novotná Supervisor: RNDr. Klára Konečná, Ph.D. Title of diploma thesis: Advanced antibacterial activity testing of candidate newly synthesized compounds Background: The aim of this thesis was to perform an extended study of the antibacterial activity of selected newly synthesized rhodanine derivatives. In this study, activity against clinical isolates of bacterial strains of the genus Staphylococcus and Enterococcus was evaluated. The main part of the work also includes the evaluation of the antibacterial activity of one selected substance in combination with commercially available antibiotics using the checkerboard method. Methods: Evaluation of the antibacterial activity of tested substances was performed using the broth microdilution method according to EUCAST guidelines (with minor modifications). The activity of these substances was evaluated against clinical isolates of bacteria of the genera Staphylococcus and Enterococcus and one Staphylococcus aureus MRSA reference strain (ATCC 43300, CCM 4750). For a selected compound with a demonstrably promising antistaphylococcal effect, the combined effect of this substance was tested with three...
Induction of innate immune response against intracellular bacterium Francisella tularensis
Sommerová, Gabriela ; Konečná, Klára (advisor) ; Myslivcová Fučíková, Alena (referee)
Background: The purpose of this bachelor thesis is to describe Francisella tularensis and activation of innate immunity during host infection. Main findings: The main findings of the work include the method of recognition of F. tularensis via Toll-like receptors, the production of cytokines and chemokines and the subsequent involvement of other components of innate immunity, including neutrophils, NK cells, or humoral components of the immune response, which also includes complement. The information is based on a number of studies performed mainly on mouse models. Conclusions: The intracelullar bacterium F. tularensis is known to cause tularemia. Its high infectivity, together with the high risk of death in the lung form, raises great concerns about the misuse of this bacterium as a biological weapon. To date, not all of its mechanisms of pathogenesis are known, which is a major problem in the development of effective vaccines. The induction of innate immunity appears to be very important in the host's defense against F. tularensis. However, despite several decades of research, the mechanisms of F. tularensis involved in host cell manipulation, including the regulation of the induction of immune response to F. tularensis infection, have still not been fully elucidated. Key words: Francisella...
In vitro screening of novel potentially active antimycotic compounds III
Janků, Aneta ; Janďourek, Ondřej (advisor) ; Konečná, Klára (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Biological and Medical Sciences Study program: Specialist in Laboratory Methods Candidate: Bc. Aneta Janků Supervisor: PharmDr. Ondřej Janďourek, Ph.D. Title of diploma thesis: In vitro screening of novel potentially active antimycotic compounds III Key words: yeasts, moulds, antimycotics, mechanism of action of polyenes, microdilution broth method, MIC - minimal inhibition concentration. The main topic of this diploma thesis is in vitro screening of new, potentially active antifungal compounds. The introductory chapter in the theoretical part of the work is devoted to the epidemiology of fungal infections. The classification of micromycetes and the characteristics of the fungal eukaryotic cell are given below, focusing on composition of the plasma membrane and the cell wall. A separate chapter also deals with specific species of fungi and the diseases they cause. The main topic is drugs from the group of antifungals, where more attention is focused on polyene antifungals, their mechanism of action in detail and the emergence of resistance. An integral part are also the stages of development of new drugs and a list of novels developing antifungals. The final chapter describes the types of methods designed for in vitro evaluation...

National Repository of Grey Literature : 93 records found   1 - 10nextend  jump to record:
See also: similar author names
1 Konečná, Karolína
10 Konečná, Kateřina
2 Konečná, Klaudie
5 Konečná, Kristýna
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