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Study of monolayer lipid models of skin barrier diseases
Doláková, Andrea ; Švecová, Barbora (advisor) ; Svačinová, Petra (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Author: Andrea Doláková Supervisor: PharmDr. Barbora Školová, Ph.D. Title of thesis: Study of lipid monolayer models of skin barrier diseases Skin protects human body from external factors and maintain internal integrity of organism. Skin barrier is formed by corneocytes and lipid matrix in intercellular space of stratum corneum, the uppermost layer of epidermis. Lipid matrix consists of ceramides, free fatty acids and cholesterol. The composition and organisation of lipid matrix are essential for the skin barrier properties. Ceramides are synthetized from glucosylated ceramide and sphingomyelin by hydrolitic enzymes β-glucocerebrosidase and sphingomyelinase. Insufficiency or malfunction of these enzymes lead to functionless skin barrier. The aim of this work was to prepare and study monolayer lipid models, which simulated the malfunction of sphingomyelinase in skin diseases. For valuation we used several techniques such as Langmuir monolayers, Brewster angle microscopy (at the air-liquid interface), Langmuir-Blodgett technique and atomic force microscopy. Monolayers with 100% substitution of sphingomyelin layout the most readily with rising surface pressure and the course of their isotherm is very...
Study of monolayer lipid models of skin barrier diseases
Doláková, Andrea ; Školová, Barbora (advisor) ; Svačinová, Petra (referee)
Charles University, Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Technology Author: Andrea Doláková Supervisor: PharmDr. Barbora Školová, Ph.D. Title of thesis: Study of lipid monolayer models of skin barrier diseases Skin protects human body from external factors and maintain internal integrity of organism. Skin barrier is formed by corneocytes and lipid matrix in intercellular space of stratum corneum, the uppermost layer of epidermis. Lipid matrix consists of ceramides, free fatty acids and cholesterol. The composition and organisation of lipid matrix are essential for the skin barrier properties. Ceramides are synthetized from glucosylated ceramide and sphingomyelin by hydrolitic enzymes β-glucocerebrosidase and sphingomyelinase. Insufficiency or malfunction of these enzymes lead to functionless skin barrier. The aim of this work was to prepare and study monolayer lipid models, which simulated the malfunction of sphingomyelinase in skin diseases. For valuation we used several techniques such as Langmuir monolayers, Brewster angle microscopy (at the air-liquid interface), Langmuir-Blodgett technique and atomic force microscopy. Monolayers with 100% substitution of sphingomyelin layout the most readily with rising surface pressure and the course of their isotherm is very...

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