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Int J Mol Sci. 2010 Oct 15;11(10):3942-53. doi: 10.3390/ijms11103942.

Pharmacological properties of the ethanol extract of Muehlenbeckia platyclada (F. Muell.) meisn. leaves.

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  • 1Departamento Farmacêutico, Faculdade de Farmácia e Bioquímica, Universidade Federal de Juiz de Fora, Campus Universitário, Martelos, 36036-330, Juiz de Fora, MG, Brazil; E-Mails: (L.L.F.); (G.D.-V.V.); (J.J.R.G.P.); (C.H.Y.).


Antinociceptive and anti-inflammatory activities of the Muehlenbeckia platyclada leaves' ethanol extract were investigated in animal models. The extract (p.o.) reduced the number of abdominal contortions induced by acetic acid by 21.57% (400 mg/kg). After intraplantar injection of formalin, a dose of 400 mg/kg (p.o.) inhibited the time spent paw licking in the first phase (26.43%), while the second phase was inhibited by 10.90 and 36.65% at the doses of 200 and 400 mg/kg, respectively. The extract (p.o.) increased the reaction time on a hot plate at a dose of 400 mg/kg (32.68 and 40.30%) after 60 and 90 minutes of treatment, respectively. The paw edema was reduced by extract (p.o.) at doses of 100 (15.46 and 16.67%), 200 (22.68 and 25.64%) and 400 mg/kg (29.50 and 37.33%) after 3 to 4 h of carrageenan application, respectively. Doses of 100, 200 and 400 mg/kg (p.o.), administered 4 h after the carrageenan injection, reduced the exudate volume (11.28, 21.54 and 45.13%), while leukocyte migration was reduced by 21.21 and 29.70% at the doses of 200 and 400 mg/kg, respectively. These results indicate that the ethanol extract from M. platyclada may constitute a potential target for the discovery of new molecules with antinociceptive and anti-inflammatory activities that can be explored for their therapeutic use.


Muehlenbeckia platyclada; Polygonaceae; anti-inflammatory activity; antinociceptive activity

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