Revista Iberoamericana de Micología

Revista Iberoamericana de Micología

Volume 36, Issue 3, July–September 2019, Pages 139-141
Revista Iberoamericana de Micología

Note
In vitro inhibitory activity of sertraline against clinical isolates of Sporothrix schenckiiActividad inhibitoria in vitro de la sertralina frente a aislamientos clínicos de Sporothrix schenckii

https://doi.org/10.1016/j.riam.2019.01.004Get rights and content

Abstract

Background

Sertraline (SRT) is an antidepressant that has proven its activity in vitro against Cryptococcus, Coccidioides, Trichosporon and other fungi. Disseminated sporotrichosis, although rare, has a high mortality and its treatment is difficult and prolonged, often relying in combining two or more antifungals.

Aims

In our study we evaluate the antifungal activity of SRT, alone and in combination with itraconazole (ITC), voriconazole (VRC) and amphotericin B (AMB), against 15 clinical isolates of Sporothrix schenckii.

Methods

We used the broth microdilution method as described by the CLSI to test the susceptibility to antifungals, and the checkerboard microdilution method to evaluate drug interactions.

Results

The minimum inhibitory concentration (MIC) with SRT was in the range of 4–8 μg/ml, while for AMB, VRC and ITC were 0.5–4 μg/ml, 0.5–8 μg/ml and 0.125–2 μg/ml, respectively. In addition, SRT showed synergy with ITC in one strain, mainly additivity with VRC, and indifference with AMB in others.

Conclusions

The MIC values with SRT for the isolates studied show the potential role of this drug as an adjuvant in the treatment of sporotrichosis, especially in disseminated or complicated cases.

Resumen

Antecedentes

La sertralina (SRT) es un antidepresivo que ha demostrado actividad in vitro contra Cryptococcus, Coccidioides, Trichosporon y otros hongos. La esporotricosis diseminada, aunque rara, tiene una mortalidad elevada y su tratamiento es complicado, requiriendo, a menudo, la combinación de dos o más antifúngicos.

Objetivos

En este estudio evaluamos la actividad antifúngica de SRT, sola y en combinación con itraconazol (ITC), voriconazol (VRC) y anfotericina B (AMB), frente a 15 aislamientos clínicos de Sporothrix schenckii.

Métodos

Se usó la técnica de microdilución en caldo para evaluar la sensibilidad a los antifúngicos y el método de tablero de damas para las interacciones entre estos fármacos.

Resultados

La concentración mínima inhibitoria (CMI) de SRT estuvo en el rango de 4-8 μg/ml, mientras que para AMB, VRC e ITC fue de 0,5–4 μg/ml, 0,5–8 μg/ml y 0,125–2 μg/ml, respectivamente. La SRT mostró sinergia con ITC frente a una cepa, efecto aditivo principalmente con VRC, e indiferencia con AMB.

Conclusiones

Los valores de la CMI de SRT para los aislamientos ensayados son indicativos del potencial de este fármaco como adyuvante en el tratamiento de la esporotricosis, especialmente en casos complicados o de enfermedad diseminada.

Section snippets

Funding sources

This work was supported by internal resources of the Department of Microbiology, School of Medicine, UANL.

Conflict of interest

The authors declare they have no conflict of interest.

Acknowledgments

Special thanks to Christian L. Campos Cortés, M.Sc. for her technical assistance.

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