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Molecules 2014, 19(1), 1060-1068; doi:10.3390/molecules19011060
Communication

Analgesic Effect of Harpagophytum procumbens on Postoperative and Neuropathic Pain in Rats

, ,  and *
Received: 12 December 2013; in revised form: 10 January 2014 / Accepted: 13 January 2014 / Published: 16 January 2014
(This article belongs to the Section Metabolites)
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Abstract: Harpagophytum procumbens, also known as Devil’s Claw, has historically been used to treat a wide range of conditions, including pain and arthritis. The study was designed to investigate whether H. procumbens extracts exhibit analgesic effects in plantar incision and spared nerve injury (SNI) rats. The whole procedure was performed on male SD rats. To evaluate pain-related behavior, we performed the mechanical withdrawal threshold (MWT) test measured by von Frey filaments. Pain-related behavior was also determined through analysis of ultrasonic vocalization (USVs). The results of experiments showed MWT values of the group that was treated with 300 mg/kg H. procumbens extract increased significantly; on the contrary, the number of 22–27 kHz USVs of the treated group was reduced at 6 h and 24 h after plantar incision operation. After 21 days of continuous treatment with H. procumbens extracts at 300 mg/kg, the treated group showed significantly alleviated SNI-induced hypersensitivity responses by MWT, compared with the control group. These results suggest that H. procumbens extracts have potential analgesic effects in the case of acute postoperative pain and chronic neuropathic pain in rats.
Keywords: Harpagophytum procumbens; pain; hyperalgesia; allodynia; ultrasonic vocalization Harpagophytum procumbens; pain; hyperalgesia; allodynia; ultrasonic vocalization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lim, D.W.; Kim, J.G.; Han, D.; Kim, Y.T. Analgesic Effect of Harpagophytum procumbens on Postoperative and Neuropathic Pain in Rats. Molecules 2014, 19, 1060-1068.

AMA Style

Lim DW, Kim JG, Han D, Kim YT. Analgesic Effect of Harpagophytum procumbens on Postoperative and Neuropathic Pain in Rats. Molecules. 2014; 19(1):1060-1068.

Chicago/Turabian Style

Lim, Dong W.; Kim, Jae G.; Han, Daeseok; Kim, Yun T. 2014. "Analgesic Effect of Harpagophytum procumbens on Postoperative and Neuropathic Pain in Rats." Molecules 19, no. 1: 1060-1068.


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