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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Azole resistance in Aspergillus fumigatus: genetic background and mechanisms of spread in the Czech Republic
 Holíková, Kristýna ; Hubka, Vít (advisor) ; Chrenková, Vanda (referee)
Aspergillus fumigatus is a widespread saprophytic fungus. As an opportunistic pathogen it can also cause aspergillosis, which can manifest itself as a life-threatening infection in immunocompromised patients. Azole derivatives constitute first-line therapy of aspergillosis, but the increase worldwide of azole-resistant A. fumigatus strains represents a serious clinical problem. So far most of the molecular mechanisms causing azole resistance are dependent on the cyp51A gene. Studies of the last decade have shown that primarily because of the use of azole fungicides in agriculture, azole-resistant strains of A. fumigatus are selected in the environment. This subsequently complicates the treatment of patients with aspergillosis, and the incidence of infections unresponsive to treatment with azole antifungals increases. Increasing incidence of azole antifungals-resistant infections has become a growing concern: yet the prevalence of azole resistance has not yet been assessed in Czech Republic. Therefore, the first objective of this thesis was to determine Czech Republic's prevalence of azole resistance in clinical strains of A. fumigatus. Those findings permitted the observation of the molecular-genetic mechanisms of this resistance. Second aim was to study environmental prevalence of azole resistance...
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