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Pellon, Aize; Ramirez-Garcia, Andoni; Buldain, Idoia; Antoran, Aitziber; Martin–Souto, Leire; Rementeria, Aitor; Hernando, Fernando L.
International journal of antimicrobial agents, January 2018, 2018-Jan, 2018-01-00, 20180101, Volume: 51, Issue: 1Journal Article
•Antifungal resistance is an increasingly relevant problem.•Molecular mechanisms underlying antifungal resistance are not yet fully understood.•Emerging fungi such as Lomentospora prolificans are inherently resistant, representing therapeutic challenges.•Regarding its pathobiology, L. prolificans might serve as a model for studying antifungal resistance. The number of fungal isolates resistant to antifungal drugs has increased dramatically over the last few years and has become an important concern for clinicians. Among these isolates, fungi showing multidrug resistance are particularly worrying because of the difficulties associated with their treatment. These factors hamper the successful recovery of patients and drastically raise mortality rates. Antifungal resistance is multifactorial and several mechanisms in different fungi have been described. There is a need to study these mechanisms in depth; however, the study of antifungal drug resistance separately for each individual species makes progress in the field very slow and tedious. The selection of a multiresistant microorganism as a model for understanding resistance mechanisms and extrapolating the results to other species could help in the search for a solution. In this mini-review, we describe the pathobiology of Lomentospora (Scedosporium) prolificans, paying special attention to its intrinsic resistance to all currently available antifungal agents. The characteristics of L. prolificans offer several advantages: the possibility of using a single microorganism for the study of resistance to different drugs, even cases of double and triple resistance; it is biologically safe for society in general as no new genetically–modified strains are needed for the experiments; it is homologous with other fungal species, and there is repetitiveness between different strains. In conclusion, we propose L. prolificans as a candidate for consideration as a fungal model for the study of resistance mechanisms against antifungal agents.
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