Abstract
Background: Trichomoniasis is one of the most common nonviral sexually transmitted infections worldwide that its drug-resistant cases are on the rise. Objectives: The aim of this study was to evaluate the antiprotozoal activity of Marrubium vulgare essential oil and extracts against Trichomonas vaginalis. Methods: After preparation of essential oil and extracts of M. vulgare, five T. vaginalis isolates were subjected to susceptibility testing after 24 and 48 hours of incubation at 35.5°C under aerobic conditions. Results: The examined essential oil and extracts had potent antitrichomonal activities against T. vaginalis. After 48-hour exposure, the most antitrichomonal activity of M. vulgare preparations was related to the essential oil, with a mean minimum inhibitory concentration (MIC) value of 291 ± 136 µg/mL, followed by ethyl acetate (541 ± 197 µg/mL), methanol (1000 ± 0 µg/mL), and n-hexane (1500 ± 490 µg/mL) extracts, in comparison with metronidazole (with MICs ranging from 3.1 to 12.5 µg/mL). Conclusions: The findings of this study showed that the compounds of M. vulgare have significant activities against T. vaginalis parasite. Therefore, future studies are needed to clear more details about antitrichomonal properties of M. vulgare compounds
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