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Sida cordifolia Leaf Extract Reduces the Orofacial Nociceptive Response in Mice

Publication Type:Journal Article
Year of Publication:2011
Authors:Bonjardim, LR, Silva, AM, Oliveira, MGB, Guimarães, AG, Antoniolli, AR, Santana, MF, Serafini, MR, Santos, RC, Araújo, AAS, Estevam, CS, Santos, MRV, Lyra, A, Carvalho, R, Quintans-Júnior, LJ, Azevedo, EG, Botelho, MA
Journal:Phytotherapy Research
Volume:25
Issue:8
Date Published:2011
ISBN Number:1099-1573
Keywords:medicinal plant, mice, orofacial pain, Sida, Sida cordifolia
Abstract:

In this study, we describe the antinociceptive activity of the ethanol extract (EE), chloroform (CF) and methanol (MF) fractions obtained from Sida cordifolia, popularly known in Brazil as “malva branca” or “malva branca sedosa”. Leaves of S. cordifolia were used to produce the crude ethanol extract and after CF and MF. Experiments were conducted on Swiss mice using the glutamate and formalin-induced orofacial nociception. In the formalin test, all doses of EE, CF and MF significantly reduced the orofacial nociception in the first (p < 0.001) and second phase (p < 0.001), which was also naloxone-sensitive. In the glutamate-induced nociception test, only CF and MF significantly reduced the orofacial nociceptive behavior with inhibition percentage values of 48.1% (100 mg/kg, CF), 56.1% (200 mg/kg, CF), 66.4% (400 mg/kg, CF), 48.2 (200 mg/kg, MF) and 60.1 (400 mg/kg, MF). Furthermore, treatment of the animals with EE, CF and MF was not able to promote motor activity changes. These data demonstrate that S. cordifolia has a pronounced antinociceptive activity on orofacial nociception. However, pharmacological and chemical studies are necessary in order to characterize the responsible mechanisms for this antinociceptive action and also to identify other bioactive compounds present in S. cordifolia. Copyright © 2011 John Wiley & Sons, Ltd.

URL:http://dx.doi.org/10.1002/ptr.3550
Short Title:Phytotherapy Research
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