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Study of plasma protein binding of radiopharmaceuticals
Hafinec, Václav Matyáš ; Lázníček, Milan (advisor) ; Ramos Mandíková, Jana (referee)
Study of Plasma Protein Binding of Radiopharmaceuticals Summary The purpose of this work is the study of binding of substances (177 Lu-DOTA- [Lys3]bombesin, 177 Lu-NOTA-[Lys3]bombesin, 177 Lu-PCTA-[Lys3]bombesin, and 177 Lu- DOTA-MG47) to plasma proteins by equilibrum dialysis in 37řC, particularly using plasma samples of beef, rabbit, rat and human. Within this group, these substances were compared interspecifically. The substances 177 Lu-DOTA-[Lys3]bombesin, 177 Lu-NOTA-[Lys3]bombesin, 177 Lu- PCTA-[Lys3]bombesin, and 177 Lu-DOTA-MG47 are the newly developed receptor- specific radiolabeled peptides. For all the newly collected data, the interspecific comparison and subsequent statistical evaluation was performed. The indicated bombesin derivates were compared and statistically analyzed even between themselves. During the interspecies comparisons and the determination of the statistical significance of the data, there were found statistically significant and statistically highly significant differences between some of the examined samples. A highly significant difference was found during comparing with samples of 177 Lu-NOTA- [Lys3]bombesin and statistical evaluation, there was found a statistically highly significant difference. Despite the differences found, it is clear that the plasma binding concerning...
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Transport studies in vitro on 2D and 3D cellular level
Urbanová, Johana ; Ramos Mandíková, Jana (advisor) ; Smutná, Lucie (referee)
Farmaceutická fakulta v Hradci Králové Studentka: Johana Urbanová Školitelka: PharmDr. Jana Ramos Mandíková, Ph.D. Název diplomové práce: Transportní studie na 2D a 3D buněčné úrovni. Trojrozměrné (3D) buněčné modely lépe napodobují buněčné podmínky in vivo než tradičně používané dvourozměrné (2D) buněčné modely. Transportéry pro organické anionty (OATs) a kationty (OCTs) hrají důležitou úlohu v ledvinné eliminaci léčiv a mají vliv na jejich farmakokinetické vlastnosti. Cílem práce bylo vytvořit 2D a 3D buněčný model z embryonálních ledvinných buněk HEK293, oba modely přechodně transfekovat transportérem hOAT1, transfekci optimalizovat a provést transportní inhibiční studie s vybranými NSAIDs (diklofenakem, ibuprofenem, indometacinem a naproxenem). 2D buněčný model jsme vytvořili ve 24jamkové destičce ve formě monovrstvy, jako 3D buněčný model jsme používali sféroidy, které jsme zhotovili na Petriho misce metodou visící kapky. Při transportních studiích jsme buňky inkubovali s radioaktivním substrátem OATs p-aminohippurovou kyselinou ([3 H]PAH) s nebo bez příslušného inhibitoru. Inhibiční vliv NSAIDs jsme porovnávali pomocí parametru IC50. 2D i 3D model z buněk HEK293 se nám povedlo vytvořit, ale následná transfekce byla úspěšná pouze v monovrstvě buněk. Funkčnost 3D modelu se pomocí transportní studie...
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Study of cytotoxicity of potential antituberculotics using selected methods on liver and kidney cell line
Katrnošková, Simona ; Ramos Mandíková, Jana (advisor) ; Bárta, Pavel (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Mgr. Simona Katrnošková Supervisor: PharmDr. Jana Ramos Mandíková, Ph.D. Title of Thesis: Study of cytotoxicity of potential antituberculotics using selected methods on liver and kidney cell line During pharmacologic therapy, tissues of liver and kidney are frequently exposed to high doses of xenobiotics. Via in vitro assays during preclinical testing, we are able to predict potential toxicity which helps to prevent the possible serious adverse drug reactions in clinical practice. The aim of this rigorous thesis was to state the cytotoxic profile of 4 potential antituberculotic drug candidates using appropriate cell models and in vitro assays. Another aim was to compare the cytotoxic effect of the tested compounds among themselves and to 4-aminosalicylic acid (PAS) which antituberculotic activity is known for many years. The tested substances were 3 salicylanilide diethyl phosphate-based derivatives and 4-(trifluormethyl)benzoic acid. For the cytotoxic potential assessment, we used the parameter half maximal inhibitory concentration IC50. We have used methods determining the cell metabolic activity, aminopeptidase activity, lactate dehydrogenase leakage and activity of 3/7 caspases in this...
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Transport studies in vitro on 2D and 3D cellular level
Urbanová, Johana ; Ramos Mandíková, Jana (advisor) ; Smutná, Lucie (referee)
Farmaceutická fakulta v Hradci Králové Studentka: Johana Urbanová Školitelka: PharmDr. Jana Ramos Mandíková, Ph.D. Název diplomové práce: Transportní studie na 2D a 3D buněčné úrovni. Trojrozměrné (3D) buněčné modely lépe napodobují buněčné podmínky in vivo než tradičně používané dvourozměrné (2D) buněčné modely. Transportéry pro organické anionty (OATs) a kationty (OCTs) hrají důležitou úlohu v ledvinné eliminaci léčiv a mají vliv na jejich farmakokinetické vlastnosti. Cílem práce bylo vytvořit 2D a 3D buněčný model z embryonálních ledvinných buněk HEK293, oba modely přechodně transfekovat transportérem hOAT1, transfekci optimalizovat a provést transportní inhibiční studie s vybranými NSAIDs (diklofenakem, ibuprofenem, indometacinem a naproxenem). 2D buněčný model jsme vytvořili ve 24jamkové destičce ve formě monovrstvy, jako 3D buněčný model jsme používali sféroidy, které jsme zhotovili na Petriho misce metodou visící kapky. Při transportních studiích jsme buňky inkubovali s radioaktivním substrátem OATs p-aminohippurovou kyselinou ([3 H]PAH) s nebo bez příslušného inhibitoru. Inhibiční vliv NSAIDs jsme porovnávali pomocí parametru IC50. 2D i 3D model z buněk HEK293 se nám povedlo vytvořit, ale následná transfekce byla úspěšná pouze v monovrstvě buněk. Funkčnost 3D modelu se pomocí transportní studie...
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Cytotoxicity testing on 2D and 3D model of human liver cells
Hvolková, Simona ; Ramos Mandíková, Jana (advisor) ; Bárta, Pavel (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Simona Hvolková Supervisor: PharmDr. Jana Ramos Mandíková, Ph.D. Title of diploma thesis: Cytotoxicity testing on 2D and 3D model of human liver cells. An inherent part of drug development are in vitro assays, which might be helpful in prediction of drug toxicity. Nowadays, the majority of assays use simple 2D structures for cell growth, but 3D structures with similar conditions to in vivo are becoming more popular. The goal of the study was to assess the cytotoxicity of selected xenobiotics in vitro by both 2D and 3D cell models. The research subjects were drugs from the group of antimycotics (amphotericin B, ketoconazole), NSAIDs (diclofenac, ibuprofen), antipyretics (paracetamol, fenacetine), sodium azide, tamoxifen, para-aminosalicylic acid, methanol and ethanol. For determination of cytotoxicity, the standard colorimetric method (CellTiter 96® ) based on reductive assessment of metabolic active cells was used. For drug testing it was used human standard line of liver cells HepG2. The cells were cultivated in monolayer or in 3D form with the Alvetex® Scaffold technology using high porous networked polystyrene. The parameter of inhibition concentration IC50 was chosen for toxicity assessment of...
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Radiolabelled antibodies - the perspective for diagnosis and therapy
Mejtská, Jana ; Bárta, Pavel (advisor) ; Ramos Mandíková, Jana (referee)
1 CHARLES UNIVERSITY FAKULTY OF PHARMACY IN HRADEC KRÁLOVÉ DEPARTMENT OF BIOPHYSICS AND PHYSICAL CHEMISTRY DISSERTATION THESIS RADIOLABELED ANTIBODIES - THE PERSPECTIVE FOR DIAGNOSIS AND THERAPY Supervizor: Mgr. PAVEL BÁRTA, Ph.D. HRADEC KRÁLOVÉ, 2017 Bc. JANA MEJTSKÁ 2 ABSTRACT EN Different types of tissues have a characteristic cell morphology. Each cell has typical molecules on its surface, which may be either of physiological or pathological type. The presence of these surface structures can be interesting for possible modulation of specific cell populations from neighboring cells. Utilization of this property is then essential particularly in a case of tumor cells. Targeting on tumor specific cell structures involves the use of receptor specific peptides or monoclonal antibodies. The discovery of the preparation of monoclonal antibodies has opened a new chapter in the treatment and diagnosis not only tumor diseases. The advantage of monoclonal antibodies is their specificity and also high affinity to the type of the target cell structures. This study is focused on the summary of monoclonal antibodies which are currently being applied on the treatment or diagnosis of a particular cancer. Furthermore, this work also includes antibodies which are under development for intended medical applications with...
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Standardization of a method for in vitro assessment of copper chelation
Sedlářová, Lucie ; Mladěnka, Přemysl (advisor) ; Ramos Mandíková, Jana (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Candidate: Lucie Sedlářová Supervisor: Dr. Přemysl Mladěnka, Ph.D. Title of thesis: Standardization of method for in vitro assessment of copper chelation. Cooper is a trace element, which is essential for many biochemical processes in the human body. Disruption of copper homeostasis can cause a variety of diseases. There are primarily two hereditary diseases associated with copper dyshomeostasis: Wilson's disease, which is linked with the excess of copper in the liver and other tissues, and Menkes disease, which is associated with a lack of systemic copper. In addition, local disturbances of copper play a role also in other diseases (neurodegenerative diseases, tumors, myocardial infarction). The main objective of this experimental work was the standardization of a simple but accurate method for rapid screening of copper chelators, which could be applied for the therapy of systemic or local copper excess in the future. The methodology is based on the spectrophotometric determination of copper in microplates using appropriate indicators, bathocuproindisulfonic acid disodium salt (BCS) and hematoxylin. This thesis has shown that the BCS methodology is able to determine chelation of cupric as...
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The role of melatonin in SIRT1 and p-AMPK regulation in HT-29 cell line
Shkut, Anastasiya ; Ramos Mandíková, Jana (advisor) ; Svobodová, Hana (referee)
Charles University in Prague Pharmaceutical Faculty in Hradec Králové Department of Pharmacology and Toxicology Student: Anastasiya Shkut Supervisors: Mgr. Jana Mandíková, Virginia Motilva Ph.D. Title of diploma thesis: The role of melatonin in SIRT1 and p-AMPK regulation in HT-29 cell line. Sirituin 1 (SIRT1) is NAD+ dependent deacetylase present in wide range of organisms including mammals. It was found to extend life span in yeasts during calorie restriction (CR) conditions. SIRT1 deacetylates many regulator proteins and thus control metabolic status of cell as well as AMP-activated kinase (AMPK), which is also energy regulator enzyme depending on NAD+ levels in cell. Both of them play roles in cancer and could influence autophagy, although the exact mechanism remains unclear. We focused our study on hormone melatonin, which has anti-inflammatory and anti-cancer effects, to study its influence on human colon cancer cell line HT-29. If it has impact on SIRT1 and AMPK and what is hierarchic relationship between SIRT1 and AMPK. Also we observed its possible influence on autophagy. We used Western blotting (WB) technique and from our results it seems that melatonin has significant effect on SIRT1, which might activate AMPK as well as autophagy. Nevertheless some of results did not have sufficient...
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Study of plasma protein binding of radiopharmaceuticals
Hafinec, Václav Matyáš ; Lázníček, Milan (advisor) ; Ramos Mandíková, Jana (referee)
Study of Plasma Protein Binding of Radiopharmaceuticals Summary The purpose of this work is the study of binding of substances (177 Lu-DOTA- [Lys3]bombesin, 177 Lu-NOTA-[Lys3]bombesin, 177 Lu-PCTA-[Lys3]bombesin, and 177 Lu- DOTA-MG47) to plasma proteins by equilibrum dialysis in 37řC, particularly using plasma samples of beef, rabbit, rat and human. Within this group, these substances were compared interspecifically. The substances 177 Lu-DOTA-[Lys3]bombesin, 177 Lu-NOTA-[Lys3]bombesin, 177 Lu- PCTA-[Lys3]bombesin, and 177 Lu-DOTA-MG47 are the newly developed receptor- specific radiolabeled peptides. For all the newly collected data, the interspecific comparison and subsequent statistical evaluation was performed. The indicated bombesin derivates were compared and statistically analyzed even between themselves. During the interspecies comparisons and the determination of the statistical significance of the data, there were found statistically significant and statistically highly significant differences between some of the examined samples. A highly significant difference was found during comparing with samples of 177 Lu-NOTA- [Lys3]bombesin and statistical evaluation, there was found a statistically highly significant difference. Despite the differences found, it is clear that the plasma binding concerning...
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