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The four classes of topical antifungal drugs are azole antifungals, polyene antifungals, allylamine antifungals, and other antifungals. Azole antifungals inhibit the enzyme that converts lanosterol into ergosterol. Common examples of azole antifungals include clotrimazole, econazole, ketoconazole, miconazole, and tioconazole.
The search for antifungal agents with acceptable toxicity profiles led first to the discovery of ketoconazole, the first azole-based oral treatment of systemic fungal infections, in the early 1980s. Later, triazoles fluconazole and itraconazole, with a broader spectrum of antifungal activity and improved safety profile were developed.
Antifungal resistance is a subset of antimicrobial resistance, that specifically applies to fungi that have become resistant to antifungals. Resistance to antifungals can arise naturally, for example by genetic mutation or through aneuploidy. Extended use of antifungals leads to the development of antifungal resistance through various ...
Itraconazole has a broader spectrum of activity than fluconazole (but not as broad as voriconazole or posaconazole). In particular, it is active against Aspergillus, which fluconazole is not. The mechanism of action of itraconazole is the same as the other azole antifungals: it inhibits the fungal-mediated synthesis of ergosterol.
Fluconazole is a first-generation triazole antifungal medication. It differs from earlier azole antifungals (such as ketoconazole) in that its structure contains a triazole ring instead of an imidazole ring. While the imidazole antifungals are mainly used topically, fluconazole and certain other triazole antifungals are preferred when systemic ...
Doctors anticipate more cases like Fairweather's as fungal infections become more prevalent in Europe and the U.S. Candida auris infections rose more than eightfold in the U.S. between 2017 and ...
Pages in category "Antifungals" The following 99 pages are in this category, out of 99 total. This list may not reflect recent changes. ...
As an antifungal, ketoconazole is structurally similar to imidazole, and interferes with the fungal synthesis of ergosterol, a constituent of fungal cell membranes, as well as certain enzymes. As with all azole antifungal agents, ketoconazole works principally by inhibiting the enzyme cytochrome P450 14α-demethylase (CYP51A1). [ 32 ]
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