Anti-osteoarthritis potential of peppermint and rosemary essential oils in a nanoemulsion form: behavioral, biochemical, and histopathological evidence

Autor: Mojgan Mohammadifar, Mohammad Hossein Aarabi, Fatemeh Aghighi, Maryam Kazemi, Zarichehr Vakili, Mohammad Reza Memarzadeh, Sayyed Alireza Talaei
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: BMC Complementary Medicine and Therapies, Vol 21, Iss 1, Pp 1-12 (2021)
Druh dokumentu: article
ISSN: 2662-7671
DOI: 10.1186/s12906-021-03236-y
Popis: Abstract Background This study aimed to evaluate the effect of nanoemulsion containing peppermint and rosemary essential oils in rats with osteoarthritis (OA). Methods In this experimental study, we prepared a nanoemulsion containing peppermint and rosemary essential oils by spontaneous emulsification and evaluated the nanoemulsion’s dermal irritation and toxicity. Investigating the analgesic effect of the nanoemulsion, we randomly assigned 36 male rats to 6 groups: Control (saline injection into the knee), osteoarthritis (intra-articular injection of 2 mg monosodium iodoacetate), and four groups of OA treated with nanoemulsion gel, nanoemulsion solution, rosemary and peppermint essential oil gel, or diclofenac sodium. Treatments were administered topically at a dose of 1 ml daily. Using behavioral tests, we assessed pain on days 1, 4, 7, and 14 after injection. Finally, we did the histopathological and biochemical evaluation of rats’ knee joints. Results There were no irritation signs on the animals’ skin after receiving the nanoemulsion and no changes in the hematological and biochemical parameters of rats’ blood compared to the control group. Receiving nanoemulsion decreased the mechanical (P
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