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KMID : 1138520230260020167
Journal of Pharmacopuncture
2023 Volume.26 No. 2 p.167 ~ p.174
In vitro Antibacterial Activity and Wound Healing Effects of Achillea millefolium Essential Oil in Rat
Mohammad Reza Ghasemi

Hayato Yamaguchi
Pari Tamri
Shabnam Pourmoslemi
Alireza Nourian
Dara Dastan
Abstract
Objectives: In this study we aimed to evaluate the in vitro antibacterial activity and wound healing properties of Achillea millefolium essential oil (AMEO) in full-thickness wound model in rat. The antibacterial activity of AMEO was evaluated against Staphylococcus aureus and Pseudomonas aeruginosa using the broth dilution method.

Methods: The 2 cm ¡¿ 2 cm full-thickness excisional wounds were created on the back of animals. Topical therapy was applied twice a day using 1%, 2%, and 3% w/w AMEO ointments, and the measurement of the wounds area was carried out every 3 days, after that the wound closure percentage was calculated in these days. Hydroxyproline content and histopathological evaluation of wound tissue samples were carried out on day 7 and 14 post wounding. Eucerin was used for the treatment of vehicle control group and negative control group received no treatment.

Results: Our results revealed the bacteriostatic activity of AMEO against S. aureus and P. aeruginosa. Wound healing activity evaluation of AMEO showed the significant increase (p < 0.05) in the wound closure percentages in rats treated with AMEO 1% and 2% comparing to those of non-treatment group. In addition, hydroxyproline contents of tissue significantly (p < 0.01) increased in AMEO 1% and 2% comparing to non-treatment group. Histopathological evaluations of wound tissue samples on day 7 and 14 demonstrated higher accumulation of collagen fibers, reduction of edema and inflammation and also formation of tissue appendages in 1% and 2% AMEO treated groups in comparison with non-treatment group.

Conclusion: The results of this study indicated that AMEO has the potential to be used as a safe and effective wound healing agent.
KEYWORD
wound healing, Achillea millefolium, essential oil, antibacterial
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