Antifungal resistance mechanisms in dermatophytes
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Updated: Jul 5, 2026

Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance
Published on: December 28, 2017
Nilce M Martinez-Rossi1, Nalu T A Peres, Antonio Rossi
1Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, 14049-900 Ribeirao Preto, SP, Brazil. nmmrossi@usp.br
Abstract:
Although fungi do not cause outbreaks or pandemics, the incidence of severe systemic fungal infections has increased significantly, mainly because of the explosive growth in the number of patients with compromised immune system. Thus, drug resistance in pathogenic fungi, including dermatophytes, is gaining importance. The molecular aspects involved in the resistance of dermatophytes to marketed antifungals and other cytotoxic drugs, such as modifications of target enzymes, over-expression of genes encoding ATP-binding cassette (ABC) transporters and stress-response-related proteins are reviewed. Emphasis is placed on the mechanisms used by dermatophytes to overcome the inhibitory action of terbinafine and survival in the host environment. The relevance of identifying new molecular targets, of expanding the understanding about the molecular mechanisms of resistance and of using this information to design new drugs or to modify those that have become ineffective is also discussed.
Insights
Drug resistance in pathogenic fungi is increasing due to compromised immune systems. This review covers molecular mechanisms, like ABC transporters, that enable dermatophytes to resist antifungals such as terbinafine.
Area of Science:
- Medical Mycology
- Molecular Biology
- Antimicrobial Resistance
Background:
- Severe systemic fungal infections are rising, primarily in immunocompromised patients.
- Drug resistance in pathogenic fungi, particularly dermatophytes, is a growing concern.
Purpose of the Study:
- To review the molecular mechanisms of dermatophyte resistance to antifungals and cytotoxic drugs.
- To highlight resistance strategies against terbinafine and host survival mechanisms.
Main Methods:
- Literature review of molecular aspects of fungal drug resistance.
- Analysis of gene expression, target enzyme modification, and transporter roles.
Main Results:
- Dermatophytes employ mechanisms like target enzyme modification and over-expression of ATP-binding cassette (ABC) transporters.
- These mechanisms contribute to resistance against terbinafine and facilitate survival within the host.
Conclusions:
- Understanding molecular resistance mechanisms is crucial for developing new antifungal drugs.
- Modifying existing drugs or identifying novel molecular targets can combat fungal resistance.
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