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Development of liquisolid systems for colon targeting
Ogadah, Chiazor Ugo ; Vraníková, Barbora (advisor) ; Zámostný, Petr (referee) ; Gajdziok, Jan (referee)
Univerzita Karlova, Farmaceutická Fakulta V Hradci Králové Školicí pracoviště: Katedra Farmaceutické Technologie Doktorský studijní program: Farmaceutická Technologie Kandidátka: Mgr. Chiazor Ugo Ogadah Školitelka: doc. PharmDr. Barbora Vraníková, Ph.D. Konzultantka: doc. Prof. PharmDr. Zdeňka Šklubalová, Ph.D. Název dizertační práce: Vývoj liquisolid systémů s cíleným přívodem léčiva do kolonu V lokální nebo systémové terapii chorob tlustého střeva mají systémy cílící do kolonu slibnou perspektivu. Úspěch však představuje výzvu díky fyziologickým bariérám trávicího traktu. Pokud zvýšení rozpustnosti léčiva předchází cílení, lze rozpouštění, jako krok limitující rychlost, obejít, urychlit vstřebání léčiva a zvýšit jeho perorální biodostupnost. Pro optimalizaci dávky a terapeutického efektu je kromě toho potřebné zadržet přípravek v místě cílení. Cílem této práce je proto vývoj systému pro doručení a cílení omezeně rozpustného léčiva cyklosporinu A (CyA) do kolonu. V první části experimentu byly využity preformulační studie k dosažení zvýšené rozpustnosti a zrychleného uvolnění CyA pomocí tzv. liquisolid sytému (LSS) nebo přípravou interaktivních směsí společným mletím (komletím). To zahrnovalo výběr vhodného nosiče a hodnocení jeho vlastností při mletí, stejně jako výběr netěkavého...
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Study and Evaluation of Topically Applied Ceramides onto Disrupted Skin Barrier
Svobodová, Marie ; Kováčik, Andrej (advisor) ; Vraníková, Barbora (referee)
Department of Pharmaceutical Technology Author: M S b S , Ph.D. Title of diploma thesis: Study and Evaluation of Topically Applied Ceramides onto Disrupted Skin Barrier Skin is the largest organ of the human body and serves several key functions, such as protection against external influences and regulation of body temperature. Healthy skin is able to maintain the integrity and stability of the organism due to its complex structure. The skin is composed of several layers of cells, including the stratum corneum (SC), which forms the main protective barrier. Ceramides (CER) are one of the main types of barrier lipids found in the SC. These lipid molecules, along with other lipids, create a hydrophobic matrix that protects the skin from dehydration and other external influences. The lack of CER in the skin barrier leads to the disruption of its function and the worsening of the skin condition. This is associated with many diseases, such as dermatitis, psoriasis, and others. The study of CER in the SC is important to understand the mechanisms of skin protection and to develop new therapeutic approaches for the treatment of skin diseases. Topical administration of barrier lipids, especially CER, is one possible treatment route for skin diseases. Therefore, the aim of this work was to prepare...
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Study and Evaluation of Topically Applied Ceramides onto Disrupted Skin Barrier
Svobodová, Marie ; Kováčik, Andrej (advisor) ; Vraníková, Barbora (referee)
Department of Pharmaceutical Technology Author: M S b S , Ph.D. Title of diploma thesis: Study and Evaluation of Topically Applied Ceramides onto Disrupted Skin Barrier Skin is the largest organ of the human body and serves several key functions, such as protection against external influences and regulation of body temperature. Healthy skin is able to maintain the integrity and stability of the organism due to its complex structure. The skin is composed of several layers of cells, including the stratum corneum (SC), which forms the main protective barrier. Ceramides (CER) are one of the main types of barrier lipids found in the SC. These lipid molecules, along with other lipids, create a hydrophobic matrix that protects the skin from dehydration and other external influences. The lack of CER in the skin barrier leads to the disruption of its function and the worsening of the skin condition. This is associated with many diseases, such as dermatitis, psoriasis, and others. The study of CER in the SC is important to understand the mechanisms of skin protection and to develop new therapeutic approaches for the treatment of skin diseases. Topical administration of barrier lipids, especially CER, is one possible treatment route for skin diseases. Therefore, the aim of this work was to prepare...
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Study of Topical Ceramide Application
Kulhánková, Roksolana ; Kováčik, Andrej (advisor) ; Vraníková, Barbora (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Author: Roksolana Kulhánková Supervisor: doc. PharmDr. Andrej Kováčik, Ph.D. Title of diploma thesis: Study of topically administred ceramides The human stratum corneum (SC) is the uppermost layer of the epidermis, which is made up of several layers of corneocytes. The space between the corneocytes is filled with barrier lipids, i.e., ceramides, cholesterol, and fatty acids, which are represented in an equimolar ratio. The arrangement of intercellular lipids has a significant effect on the barrier properties of the skin. Damaged skin barrier (e.g., in atopic dermatitis) is associated with a lack of lipids in the SC lipid matrix, which is reflected in increased trans-epidermal water loss and deterioration of skin quality (e.g., severe dryness, flaking, and cracks). One of the potential ways to restore the skin barrier is the topical administration of barrier lipids, especially ceramides (Cer). The goal of this work was to study the effect of topically administered Cer (very long-chain Cer AP alone or in combination with ultra-long-chain Cer EOS) on model-damaged SC and their effect in the process of restoring barrier function. Several topically administered formulations (creams) were prepared, which...
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Study of Topical Ceramide Application
Kulhánková, Roksolana ; Kováčik, Andrej (advisor) ; Vraníková, Barbora (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Author: Roksolana Kulhánková Supervisor: doc. PharmDr. Andrej Kováčik, Ph.D. Title of diploma thesis: Study of topically administred ceramides The human stratum corneum (SC) is the uppermost layer of the epidermis, which is made up of several layers of corneocytes. The space between the corneocytes is filled with barrier lipids, i.e., ceramides, cholesterol, and fatty acids, which are represented in an equimolar ratio. The arrangement of intercellular lipids has a significant effect on the barrier properties of the skin. Damaged skin barrier (e.g., in atopic dermatitis) is associated with a lack of lipids in the SC lipid matrix, which is reflected in increased trans-epidermal water loss and deterioration of skin quality (e.g., severe dryness, flaking, and cracks). One of the potential ways to restore the skin barrier is the topical administration of barrier lipids, especially ceramides (Cer). The goal of this work was to study the effect of topically administered Cer (very long-chain Cer AP alone or in combination with ultra-long-chain Cer EOS) on model-damaged SC and their effect in the process of restoring barrier function. Several topically administered formulations (creams) were prepared, which...
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Strategic management
Zázvorka, Tomáš ; Krause, Josef (advisor) ; Vintnera, Vladislava (referee)
The goal of this master's thesis is to perform a strategic analysis, to formulate a strategy on its basis and to propose the way of implementation and control of the strategy for the SAP division of the Pontech s.r.o. company and to contribute to successful implementation of strategic management system in this division and company. The thesis consists of two main parts. In the first, theroretically-metodological, part the terms and theories of strategic management and strategy are explained first and then the most common tools and methods of strategic analysis and further phases of strategic cycle i.e. formulation, implementation and control, which are used in the second, analytical, part, are mentioned. The analysis of macro and microenvironment, the analysis of internal resources and capabilities and the synthesis in the form of SWOT analysis is thus performed gradually, a strategy is formulated on that basis and after all the way of implementation and control of a strategy is performed using the principles of Balanced Scorecard system.
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