Topical Anti-Inflammatory and Analgesic Activities of Citrullus colocynthis Extract Cream in Rats

Autor: Hassan Rajabi Vardanjani, Hossein Rajabi Vardanjani, Marzieh Pashmforosh, Mohammad Javad Khodayar, Mahdi Pashmforosh
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Medicina; Volume 54; Issue 4; Pages: 51
Medicina, Vol 54, Iss 4, p 51 (2018)
Medicina
Volume 54
Issue 4
ISSN: 1648-9144
DOI: 10.3390/medicina54040051
Popis: Background and objectives: Citrullus colocynthis (CC), known as bitter apple, is used to treat diabetes in Iranian traditional medicine. The aim of this study is to evaluate the anti-inflammatory and analgesic activities of CC cream in rats. Materials and Methods: The carrageenan-induced edema in a rat hind paw was carried out to evaluate the topical anti-inflammatory effect of the CC fruit extract cream (2&ndash
8%) and the tissue levels of IL-6 and TNF-&alpha
were estimated by using a commercial ELISA kit. The topical antinociceptive activity of CC cream (2&ndash
8%) was evaluated in the rat formalin test. To determine the role of opioid receptors in the local antinociceptive effect of the CC cream, naloxone (20 &mu
g/paw, i.pl.), a non-selective opioid antagonist, was used. Results: The results showed that the CC cream (2&ndash
8%) dose-dependently reduced the carrageenan-induced paw edema and reversed the changes in the level of TNF-&alpha
and IL-6 due to carrageenan-induced edema (p <
0.01). The anti-inflammatory effect of CC cream 8% was comparable to that of hydrocortisone ointment 1%. Furthermore, the application of CC cream (2&ndash
8%) dose-dependently inhibited both first and second phases of the formalin test (p <
0.05). The antinociceptive effect of the CC cream (8%) was comparable to that of methyl salicylate cream 30%. Moreover, the administration of naloxone significantly reversed the topical antinociceptive effect of the CC cream (p <
0.05). Conclusions: For the first time, this study indicated that the topical application of CC cream possesses significant anti-inflammatory and antinociceptive activities in animal models, which were probably mediated by opioid receptors and the suppression of pro-inflammatory cytokines (TNF-&alpha
and IL-6). Thus, the CC cream can be used to treat inflammatory pain and inflammatory diseases.
Databáze: OpenAIRE