Abstract Title:

Fungicidal effect of thymoquinone involves generation of oxidative stress in Candida glabrata.

Abstract Source:

Microbiol Res. 2017 Jan ;195:81-88. Epub 2016 Nov 22. PMID: 28024529

Abstract Author(s):

Hala Almshawit, Ian Macreadie

Article Affiliation:

Hala Almshawit


The antifungal effect of thymoquinone, a component of black seed essential oil, has been studied on different types of fungi. Its mechanism of action as an antifungal has not been described yet. This study demonstrates the fungicidal effect of thymoquinone on different Candida species with particular emphasis on C. glabrata planktonic cells and biofilms. Since cell death was induced via the generation of oxidative stress as evidenced by the abrogation of thymoquinone toxicity in cells incubated with antioxidants, a part of thymoquinone's mechanism of action includes a direct involvement as a pro-oxidant. This was further confirmed by measuring the generation of reactive oxygen species, glutathione level reduction and decrease in mitochondrial membrane potential. The oxidative stress caused by thymoquinone was confirmed to be the cause of death and not a result of cell death.

Study Type : In Vitro Study

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