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KMID : 0616120230540020061
Korean Journal of Pharmacognosy
2023 Volume.54 No. 2 p.61 ~ p.65
Anti-nociceptive Effects of Clerodendrum Trichotomum
Chung Kyoung-Ro

Lee Byung-Soo
Kim Myung-Soo
Goh Hee-Jae
Yang Woo-In
Jeon Yong-Deok
Ahn Ji-Hye
Cha Dong-Seok
Kwon Jin
Jeon Hoon
Abstract
Clerodendrum trichotomum has been widely used as a traditional medicine for the treatment of numerous diseases, including pain management. However, there have been extremely limited pharmacological and phytochemical studies on Clerodendrum trichotomum up to now. In this study, we investigated the effects of the methanolic extract of Clerodendrum trichotomum (MCT) on nociceptive pain in mice. Our finding demonstrate that MCT treatment significantly extended the latency time in both the tail-immersion test and hot-plate test. Additionally, MCT treatment reduced acetic acid-induced writhing motions. These results suggest that MCT possesses strong anti-nociceptive activities against thermal and chemical nociception. In the formalin test, mice fed with MCT exhibited reduced licking time during both the early and late phases, thereby confirming the therapeutic potential of MCT in central and peripheral nociception. Furthermore, in combination tests using naloxone, the MCT-mediated anti-nociception was slightly reduced, indicating that MCT might act as a partial opioid receptor agonist. Based on these results, MCT may be a valuable candidate for the development of anti-nociceptive agents.
KEYWORD
Clerodendrum trichotomum, Anti-nociception, Opioid receptor, Pain
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