Analgesic, antiinflammatory and central depressor effects of the hydroalcoholic extract and fractions from Aeolanthus suaveolens.
This work studied antinociceptive, antiedematogenic and central depressor effects of the hydroalcoholic extract (HAE) from Aeolanthus suaveolens and its fractions: hexane (ASHAE-H), ethyl acetate (ASHAE-A), aqueous (ASHAE-E) and precipitate (ASHAE-PPT) in experimental models in mice. The highest activity in the writhing test was presented by ASHAE-A followed by ASHAE-PPT and ASHAE-E and the lowest by ASHAE-H. In the formalin test the effect was manifested at both phases, although more intensely at the 2nd phase of the response. In this test, the most active fraction was ASHAE-PPT causing inhibitions of the order of 76 and 90% of the 2nd phase of the test at the doses of 10 and 100 mg/kg i.p., respectively. Naloxone reversed the effects of ASHAE-PPT in both phases of the test, suggesting the participation of the opioid system in the antinociceptive effect. On the other hand, the HAE effect on both phases of the formalin test was only partially reversed by naloxone, suggesting that the extract presents more than one active compound, and at least one, of a polar nature, acting through the opioid system. HAE and ASHAE-PPT presented antiinflammatory activity and were very effective in decreasing the mouse paw edema induced by carrageenan. All fractions significantly decreased locomotor activity in the open field test in mice. However, only the nonpolar fractions presented myorelaxant activity as demonstrated by the rota rod test.
Costa-Lotufo
Letícia Veras
LV
Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, Brazil. lvcosta@secrel.com.br
de Lucena
David Freitas
DF
Andrade-Neto
Manoel
M
Bezerra
José Norberto Sousa
JN
Leal
Luzia Kalyne Almeida Moreira
LK
de Sousa
Francisca Cléa Florência
FC
Viana
Glauce Socorro de Barros
GS
D000700:Analgesics / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D002492:Central Nervous System Depressants / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*; D004487:Edema / Q000188:drug therapy; D000431:Ethanol / Q000494:pharmacology / Q000627:therapeutic use; D005260:Female; D019686:Lamiaceae; D008297:Male; D051379:Mice; D010147:Pain Measurement / Q000187:drug effects / Q000379:methods; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use; D018515:Plant Leaves
D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal; D002492:Central Nervous System Depressants; D010936:Plant Extracts; D000431:Ethanol