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Current treatment options of intestinal and extra-intestinal amebiasis.
Pastyříková, Aneta ; Nohýnková, Eva (advisor) ; Stejskal, František (referee)
Amoebiasis is a parasitic infection caused by the pathogenic intestinal amoeba Entamoeba histolytica, which multiplies as a minute form in the human lumen of the colon. Under not yet defined conditions, the minute form can be transformed into a magna form that attacks the colon wall and is able to spread out of the intestine by blood and infect internal organs, especially the liver. Amoebiasis is primarily treated with chemotherapeutics, which are divided into luminal and tissue depending on the site of action. Luminal drugs target the stages of E.histolytica in the lumen of the intestine and are therefore used to treat asymptomatic and symptomatic forms of intestinal amoebiasis. Tissue drugs, especially the 5-nitroimidazole derivative, metronidazole, which is the drug of choice in the treatment of amoebiasis, penetrate the tissues and are used to treat invasive intestinal and extra-intestinal infections. If chemotherapy is ineffective or there is a risk of rupture of abscess and sepsis, surgical treatment is performed. This thesis summarizes therapeutic approaches to individual clinical forms of amoebiasis, possibilities of chemotherapy at present, but also before the use of 5-nitroimidazole derivates, and alternatives to current drugs. Key words Intestinal amebae of humans, Entamoeba histolytica,...
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Virulence factors of Entamoeba histolytica
Novotná, Monika ; Tachezy, Jan (advisor) ; Tůmová, Pavla (referee)
The parasitic protist Entamoeba histolytica causes intestinal disease called amoebiasis (amoebic dysentery), which is one of the most significant diseases worldwide, mainly in developing countries. The goal of this bachelor thesis is to summarize current knowledge about virulence factors of E. histolytica. It is primarly focused on adhesive lectin Gal/GalNAc, cysteine proteases, phagocytosis of apoptotic cells, amoebapore forming pores in the membranes of the target cells and trogocytosis. Keywords: virulence factors, Entamoeba histolytica, parasite, protist, amoebiasis, lectin Gal/GalNAc, cysteine proteinase, phagocytosis, trogocytosis, amoebapore
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