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	Effect of oxidative stress on antioxidant systems, telomere length and telomerase activity in \kur{Locusta migratoria} VRBOVÁ, Kristýna Oxidative stress is caused by an imbalance between oxidants and antioxidants. Oxidative stress generated by reactive oxygen species (ROS) or reactive nitrogen species (RNS) occurs when protection of antioxidants fails or when an amount of ROS is too high. Telomeres, regions of repetitive nucleotide sequences at the end of chromosomes, are especially sensitive to oxidative stress because they contain a lot of guanine which is often oxidised. Antioxidants play an important role in protection against oxidative stress. In this thesis I analysed the effect of oxidative stress caused by paraquat on activity of antioxidant enzymes (catalase and superoxide dismutase) and telomere length in Locusta migratoria. I also studied differences in telomere length between locusts of various development stages and telomerase activity in locusts and other Orthoptera. Detailed record
	Effect of oxidative stress on antioxidant enzymes in \kur{Drosophila melanogaster}. SZAKOSOVÁ, Klára Oxidative stress reflects an imbalance between reactive oxygen species and antioxidant defense, which can result in cellular damage. The reactive radicals can interact with cell components, including proteins, lipids and nucleic acid. Antioxidant enzymes are the main defense against oxidative stress, representing by two the most important enzymes, catalase and superoxide dismutase. In this thesis I studied the effect of oxidative stress on activity of antioxidant enzymes in Drosophila melanogaster and Locusta migratoria, after exposure to the herbicide paraquat. Detailed record
	Study of Prothoracic gland Products of Migratory Locust (\kur{Locusta migratoria}) LUSKOVÁ, Miroslava Prothoracic glands secrete ekdysteroids and protein products. The protein products of the prothoracic gland from the African migratory locust, Locusta migratoria were a subject of this study. The secretion of the proteins is enhanced during in vitro incubation by tris [tris(hydroxymethyl)aminomethan] while the content of non-secretory proteins remains without substantial changes. Detailed record

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