Abstract
Talaromyces (Penicillium) marneffei can cause fatal disseminated infection in immunocompromised hosts. However, therapeutic strategies for the mycosis are limited. Reports of the other fungi suggest that berberine, a component of traditional herb, inhibitors interact with antifungal agents to improve the treatment outcomes. In the study, we evaluated the in vitro efficacy of berberine in combination with conventional antifungal agents against the pathogenic yeast form of T. marneffei. We demonstrate the synergistic effect of combination of berberine with fluconazole (52.38%), itraconazole (66.67%), voriconazole (71.43%), amphotericin B (71.43%) or caspofungin (52.38%) of T. marneffei strains, respectively. Time–kill curves confirmed the synergistic interaction, and no antagonistic was observed in all of the combinations. In conclusion, berberine could enhance the efficacy of conventional antifungal agents against the yeast form of T. marneffei in vitro. The results indicated berberine might have a potential role in combination therapy for talaromycosis.
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Acknowledgements
This study was supported by grants from the National Natural Science Foundation of China (Nos. 81571971 and 81271804) and Natural Science Foundation of Guangxi Province of China (2017GXNSFAA198004 and 20150825). The funders have no role in this study design, data collection and analysis, decision to publish or preparation of the manuscript.
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Gang Liang and Cun-wei Cao designed this study and drafted the article. Hong Luo and Kai-su Pan performed the antifungal susceptibility assays and time–kill curves and data collection and edited the article. Dong-yan Zheng, Yan-qing Zheng and Xiu-ying Li isolate and identify strains. Xiao-lu Luo Alex Andrianopoulos and Le-min Wen performed the data analysis and calculated the statistics. Jing Guo, Chun-yang Huang and Justin Joseph critically revised the article. Rong Hu, Yu-jiao Li and Tian-min Li provided valuable advice and supported the clinical protocol. Study funding was secured by Cunwei Cao and Gang Liang. All of the authors have read and approved the final manuscript.
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Luo, H., Pan, Ks., Luo, Xl. et al. In Vitro Susceptibility of Berberine Combined with Antifungal Agents Against the Yeast Form of Talaromyces marneffei. Mycopathologia 184, 295–301 (2019). https://doi.org/10.1007/s11046-019-00325-y
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DOI: https://doi.org/10.1007/s11046-019-00325-y