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Eur J Pharmacol. 2017 Feb 5;796:32-38. doi: 10.1016/j.ejphar.2016.12.020. Epub 2016 Dec 15.

Cardamonin attenuates hyperalgesia and allodynia in a mouse model of chronic constriction injury-induced neuropathic pain: Possible involvement of the opioid system.

Author information

1
Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
2
Biomedical Science Programme, School of Diagnostic and Applied Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
3
Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. Electronic address: enoch@upm.edu.my.

Abstract

Neuropathic pain arises from the injury of nervous system. The condition is extremely difficult to be treated due to the ineffectiveness and presence of various adverse effects of the currently available drugs. In the present study, we investigated the antiallodynic and antihyperlagesic properties of cardamonin, a naturally occurring chalcone in chronic constriction injury (CCI)-induced neuropathic pain mice model. Our findings showed that single and repeated dose of intra-peritoneal administration of cardamonin (3, 10, 30mg/kg) significantly inhibited (P<0.001) the chronic constriction injury-induced neuropathic pain using the Hargreaves plantar test, Randall-Selitto analgesiometer test, dynamic plantar anesthesiometer test and the cold plate test in comparison with the positive control drug used (amitriptyline hydrochloride, 20mg/kg, i.p.). Pre-treatment with naloxone hydrochloride (1mg/kg, i.p.) and naloxone methiodide (1mg/kg, s.c) significantly reversed the antiallodynic and antihyperalgesic effects of cardamonin in dynamic plantar anesthesiometer test and Hargreaves plantar test, respectively. In conclusion, the current findings demonstrated novel antiallodynic and antihyperalgesic effects of cardamonin through the activation of the opioidergic system both peripherally and centrally and may prove to be a potent lead compound for the development of neuropathic pain drugs in the future.

KEYWORDS:

Allodynia; Amitriptyline hydrochloride (PubChem CID: 11065), Tribromoethanol (PubChem CID: 6400); CCI; Cardamonin; Cardamonin (PubChem CID: 10424762); Dimethyl sulphoxide (PubChem CID: 679); Hyperalgesia; Iodine (PubChem CID: 410087); Morphine sulphate (PubChem CID: 6321225); Naloxone hydrochloride (PubChem CID: 5464092); Naloxone methiodide (PubChem CID: 16219719); Neuropathic pain

PMID:
27988285
DOI:
10.1016/j.ejphar.2016.12.020
[Indexed for MEDLINE]

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