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KMID : 0043320120350040623
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Archives of Pharmacal Research
2012 Volume.35 No. 4 p.623 ~ p.631
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Phytochemical analysis and antinociceptive properties of the seeds of Garcinia achachairu
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Molin Marlova Manhabosco Dal
Silva Suellen
Alves Douglas Rafael
Quintao Nara Lins Meira
Monache Franco Delle
Filho Valdir Cechinel
Niero Rivaldo
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Abstract
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In a search for new and effective analgesic substances from the Brazilian biodiversity, the present study evaluates the chemical composition and antinociceptive potential of the methanol extract and a pure compound obtained from the seeds of Garcinia achachairu Rusby (Clusiaceae). The methanolic seed extract was directly subjected to purification by column chromatography and the purification was monitored by thin-layer chromatography. The main isolated compound was identified as Guttiferone A by comparison of conventional spectroscopic data (IR, NMR-1H and 13C) to the literature data which was isolated for the first time from this plant. When evaluated in the acetic acid-induced nociception model in mice, the methanolic seed extract had an ID50 (Inhibitory dose) of 13.1 (11.23?14.91) mg/kg and a maximal inhibition of 72 ± 4%. In the same model, Guttiferone A had an ID50 of 4.54 (3.29?6.24) mg/kg and a maximal inhibition of 73 ± 5%. The methanolic seed extract and Guttiferone A were also active in pain models induced by formalin, capsaicin, glutamate and carrageenan. These data suggest that the antinociceptive effect of Guttiferone A partly depends on its interference with the synthesis or activity of the cytokine TNF-α, the keratinocyte-derived chemokine KC, and/or PGE2. These data support, at least in part, the use of G. achachairu in folk medicine and suggest that this plant is an important source of compounds with a suitable profile for development as new and effective medicinal agents to treat pain processes.
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KEYWORD
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Garcinia achachairu, Antinociception, In a search for new and effective analgesic substances from the Brazilian biodiversity, the present study evaluates the chemical composition and antinociceptive potential of the methanol extract and a pure compound obtained from the seeds of Garcinia achachairu Rusby (Clusiaceae). The methanolic seed extract was directly subjected to purification by column chromatography and the purification was monitored by thin-layer chromatography. The main isolated compound was identified as Guttiferone A by comparison of conventional spectroscopic data (IR, NMR-1H and 13C) to the literature data which was isolated for the first time from this plant. When evaluated in the acetic acid-induced nociception model in mice, the methanolic seed extract had an ID50 (Inhibitory dose) of 13.1 (11.23?14.91) mg/kg and a maximal inhibition of 72 ± 4%. In the same model, Guttiferone A had an ID50 of 4.54 (3.29?6.24) mg/kg and a maximal inhibition of 73 ± 5%. The methanolic seed extract and Guttiferone A were also active in pain models induced by formalin, capsaicin, glutamate and carrageenan. These data suggest that the antinociceptive effect of Guttiferone A partly depends on its interference with the synthesis or activity of the cytokine TNF-α, the keratinocyte-derived chemokine KC, and/or PGE2. These data support, at least in part, the use of G. achachairu in folk medicine and suggest that this plant is an important source of compounds with a suitable profile for development as new and effective medicinal agents to treat pain processes.Guttiferone A
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