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Simulation of adhesion and transmigration imune-cells through capillary wall
Morgaenko, Katsiarina ; Čmiel, Vratislav (referee) ; Chmelíková, Larisa (advisor)
Teoretická část této práce obsahuje biofyzikální popis endoteliální vrstvy a transmigrace buněk přes tuto vrstvu. Dále popisuje charakteristiky všech důležitých komponent pro vytvoření modelu cévy in vitro (endoteliální buňky, kmenové buňky, leukocyty, Calcein AM, PKH26). Praktická část práce je věnována sestavení in-vitro modelů dvojrozměrných a trojrozměrných endoteliálních vrstev, jejich zobrazení pomoci mikroskopu a testování interakce leukocytů a kmenových buněk s těmito endoteliálními vrstvami. V závěru je navrhnut nejlepší tvar a velikost mikrofluidních systémů simulujících kapiláry.
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Methods of Bloodcells Counting
Pavlík, Jan ; Provazník, Ivo (referee) ; Hrubeš, Jan (advisor)
At present, the standardization of morphological examination of cytological preparations appears to be very difficult. Digitization and development of computer technology makes it possible to find a suitable solution for the effective processing of cytological samples. Company Cellavision, in collaboration with leading morphologist, developed a device Cellavision DM96, which uses image capture of blood cells for their morphological diagnosis and subsequent archiving. It is of great importance to focus on this system and examine its use in clinical practice. The results obtained by two different methods were statistically processed and evaluated.
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Expression and function of cellular prion protein in blood cells
Glier, Hana ; Holada, Karel (advisor) ; Živný, Jan (referee) ; Rusina, Robert (referee)
The cellular prion protein (PrPc) is essential for pathogenesis of fatal neurodegenerative prion diseases. Recently reported four cases of vCJD transmission by blood transfusion raise concerns about the safety of blood products. Proper understanding of PrPc in blood is necessary for development of currently unavailable blood screening tests for prion diseases. Flow cytometry is an attractive method for prion detection, however, the reports on the quantity of PrPc on human blood cells are contradictory. We showed that the majority of PrPc in resting platelets is present in the intracellular pool and is localized in α-granules. We demostrated that both, human platelets and red blood cells (RBC) express significant amount of PrPc and thus may play an important role in the transmission of prions by blood transfusion. Our results suggest a unique modification of PrPc on human RBC. Such modification of pathological prion protein could distort the results of blood screening tests for prions. Further we showed that the storage of blood prior to analysis and the choice of anti-prion antibody greatly affect the detection of PrPc by flow cytometry and we identified platelet satellitism as a factor contributing to the heterogeneity of PrPc detection in blood cells. Moreover, we demonstrated existence of...
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Expression and function of cellular prion protein in blood cells
Glier, Hana ; Holada, Karel (advisor) ; Živný, Jan (referee) ; Rusina, Robert (referee)
The cellular prion protein (PrPc) is essential for pathogenesis of fatal neurodegenerative prion diseases. Recently reported four cases of vCJD transmission by blood transfusion raise concerns about the safety of blood products. Proper understanding of PrPc in blood is necessary for development of currently unavailable blood screening tests for prion diseases. Flow cytometry is an attractive method for prion detection, however, the reports on the quantity of PrPc on human blood cells are contradictory. We showed that the majority of PrPc in resting platelets is present in the intracellular pool and is localized in α-granules. We demostrated that both, human platelets and red blood cells (RBC) express significant amount of PrPc and thus may play an important role in the transmission of prions by blood transfusion. Our results suggest a unique modification of PrPc on human RBC. Such modification of pathological prion protein could distort the results of blood screening tests for prions. Further we showed that the storage of blood prior to analysis and the choice of anti-prion antibody greatly affect the detection of PrPc by flow cytometry and we identified platelet satellitism as a factor contributing to the heterogeneity of PrPc detection in blood cells. Moreover, we demonstrated existence of...
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Simulation of adhesion and transmigration imune-cells through capillary wall
Morgaenko, Katsiarina ; Čmiel, Vratislav (referee) ; Chmelíková, Larisa (advisor)
Teoretická část této práce obsahuje biofyzikální popis endoteliální vrstvy a transmigrace buněk přes tuto vrstvu. Dále popisuje charakteristiky všech důležitých komponent pro vytvoření modelu cévy in vitro (endoteliální buňky, kmenové buňky, leukocyty, Calcein AM, PKH26). Praktická část práce je věnována sestavení in-vitro modelů dvojrozměrných a trojrozměrných endoteliálních vrstev, jejich zobrazení pomoci mikroskopu a testování interakce leukocytů a kmenových buněk s těmito endoteliálními vrstvami. V závěru je navrhnut nejlepší tvar a velikost mikrofluidních systémů simulujících kapiláry.
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Methods of Bloodcells Counting
Pavlík, Jan ; Provazník, Ivo (referee) ; Hrubeš, Jan (advisor)
At present, the standardization of morphological examination of cytological preparations appears to be very difficult. Digitization and development of computer technology makes it possible to find a suitable solution for the effective processing of cytological samples. Company Cellavision, in collaboration with leading morphologist, developed a device Cellavision DM96, which uses image capture of blood cells for their morphological diagnosis and subsequent archiving. It is of great importance to focus on this system and examine its use in clinical practice. The results obtained by two different methods were statistically processed and evaluated.
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