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- W1543048403 abstract "The antinociceptive activity of (-)-spectaline (1), a piperidine alkaloid isolated from Cassia leptophylla Vog. (Leguminosae), was investigated. We have also studied the acute oral toxicity of 1 in mice and it did not show any signals of toxicity in doses lower than 400 micromol/kg. The antinociceptive effect of 1 was evaluated on chemical (acetic acid, formalin and capsaicin) and thermal (hot plate and tail flick) pain models in mice, using classical standard drugs. Dipyrone ID (50) = 14.68 micromol/kg (4.8 mg/kg), indomethacin ID (50) = 0.78 micromol/kg (0.28 mg/kg) and (-)-spectaline ID (50) = 48.49 micromol/kg (15.75 mg/kg), all produced a significant inhibition of acetic acid-induced abdominal writhing in mice. (-)-Spectaline was inactive in the hyperalgesic model of formalin and did not show any central analgesic activity (hot plate and tail flick models). In the capsaicin-induced neurogenic pain model, (-)-spectaline presented an important inhibitory effect with an ID (50) = 20.81 microg/paw and dipyrone ID (50) = 19.89 microg/paw. The ensemble of results permitted us to identify 1 as an antinociceptive compound. The mechanism underlying this antinociceptive effect of 1 remains unknown, but the results suggest that such an effect could be related to pathways associated to vanilloid receptor systems." @default.
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- W1543048403 date "2003-09-01" @default.
- W1543048403 modified "2023-10-04" @default.
- W1543048403 title "Antinociceptive Profile of (-)-Spectaline: A Piperidine Alkaloid from<i>Cassia leptophylla</i>" @default.
- W1543048403 doi "https://doi.org/10.1055/s-2003-43201" @default.
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