Synergistic potential and apoptosis induction of Bunium persicum essential oil and its pure components, cuminaldehyde and γ-terpinene, in combination with fluconazole on Candida albicans isolates: in vitro and in silico evaluation

Summary

Researchers tested a spice-derived essential oil called Bunium persicum and two of its active compounds to see if they could work better with the antifungal drug fluconazole against drug-resistant yeast infections. They found that one component called cuminaldehyde was particularly effective and worked synergistically with fluconazole, meaning the combination was more powerful than either treatment alone. These natural compounds could potentially help treat fungal infections that no longer respond to standard medications, offering a promising approach using plant-based remedies alongside conventional drugs.

Background

Fluconazole resistance in Candida species is increasing and poses a significant clinical challenge. There is growing interest in complementary therapies from natural sources to address antifungal resistance. This study evaluates the synergistic and apoptotic effects of Bunium persicum essential oil and its components combined with fluconazole.

Objective

The study aimed to evaluate the synergistic and apoptotic effects of Bunium persicum essential oil (BPEO) and its two pure components, cuminaldehyde (CA) and γ-terpinene (γ-TPN), combined with fluconazole on susceptible and resistant C. albicans isolates. Molecular docking was used to study interactions between lanosterol 14-alpha-demethylase and each agent.

Results

Cuminaldehyde showed the lowest minimum inhibitory and fungicidal concentrations compared to BPEO and γ-TPN. The most synergistic effect was obtained for fluconazole combined with cuminaldehyde (63.6%), followed by BPEO (54.5%) and γ-TPN (27.2%). Combination treatments resulted in greater apoptosis effects than single agents, and docking studies confirmed interactivity with 14α-demethylase.

Conclusion

The results indicate that natural products combined with synthetic antifungal agents could develop effective therapeutic strategies, particularly for resistant fungal species. Cuminaldehyde demonstrated superior antifungal activity and synergistic potential with fluconazole, suggesting promise for clinical application in managing drug-resistant candidiasis.
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