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J Ethnopharmacol. 2006 Sep 19;107(2):254-8. Epub 2006 Mar 17.

Analgesic and sedative activities of lactucin and some lactucin-like guaianolides in mice.

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  • 1Department of New Drugs Research, Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Str., 31-343 Krakow, Poland.

Abstract

Lactucin (1) and its derivatives lactucopicrin (2) and 11beta,13-dihydrolactucin (3), which are characteristic bitter sesquiterpene lactones of Lactuca virosa and Cichorium intybus, were evaluated for analgesic and sedative properties in mice. The compounds showed analgesic effects at doses of 15 and 30 mg/kg in the hot plate test similar to that of ibuprofen, used as a standard drug, at a dose of 30 mg/kg. The analgesic activities of the compounds at a dose of 30 mg/kg in the tail-flick test were comparable to that of ibuprofen given at a dose of 60 mg/kg. Lactucopicrin appeared to be the most potent analgetic of the three tested compounds. Lactucin and lactucopicrin, but not 11beta,13-dihydrolactucin, also showed sedative properties in the spontaneous locomotor activity test.

PMID:
16621374
[PubMed - indexed for MEDLINE]
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