02889nas a2200277 4500008004100000245010400041210007100145260001800216300001000234490000600244520193000250653002002180653002402200653001902224653001502243100003602258700003102294700003302325700003402358700003202392700003102424700003302455700003002488700003202518856006102550 2017 eng d00aAntinociceptive and Anti‑inflammatory Effects of Triterpenes from Pluchea quitoc DC. Aerial Parts0 aAntinociceptive and Anti‑inflammatory Effects of Triterpenes fro cDecember 2017 as1-s40 v93 a

Background: Pluchea quitoc DC. (Asteraceae), a medicinal plant known as “quitoco,” “caculucage,” “tabacarana” and “madre‑cravo,” is indicated for inflammatory conditions such as bronchitis, arthritis, and inflammation in the uterus and digestive system. Objective: This study evaluated the analgesic and anti‑inflammatory activities of the triterpenes compounds obtained from P. quitoc aerial parts. Materials and Methods: The triterpenes compounds β‑amyrin, taraxasterol and pseudo‑taraxasterol in a mixture (T); β‑amyrin, taraxasterol and pseudo‑taraxasterol acetates in a mixture (Ta); β‑amyrin, taraxasterol, pseudo‑taraxasterol acetates in a mixture with β‑amyrin, taraxasterol and pseudo‑taraxasterol myristates (Tafe) were analyzed in the models of nociception and inflammation. The evaluation of antinociceptive activity was carried out by the acetic acid‑induced writhing and tail‑flick tests while leukocyte migration to the peritoneal cavity was used for anti‑inflammatory profile. Results: The oral administration of T or Tafe (40 mg/kg and 70 mg/kg) and Ta (70 mg/kg) to mice reduced acetic acid‑induced writhing. The tail‑flick response of mice was not affected by T or Tafe (40 mg/kg). T or Tafe (40 mg/kg) and Ta (70 mg/kg) also inhibited peritoneal leukocyte infiltration following the injection of carrageenan. Conclusion: The results demonstrate the anti‑inflammatory and peripheral antinociceptive activity of the triterpenes β‑amyrin, taraxasterol, and pseudo‑taraxasterol that were decreased when these were acetylated; while the acetylated triterpenes in mixture with myristyloxy triterpenes improved this activity. These compounds seem, at least in part, to be related to the plant’s reported activity.

10aAntinociceptive10aAnti‑inflammatory10aPluchea quitoc10aTriterpene1 ada Silva, Francisco, Alcione No1 aFreire, Sônia, Maria de F1 aBorges, Marilene, Oliveira d1 aBarros, Francisco, Erivaldo V1 ade Sousa, Maria, da Glória1 aRibeiro, Maria, Nilce de S1 aGuilhon, Giselle, Maria Skel1 aMüller, Adolfo, Henrique1 aBorges, Antonio, Carlos Rom uhttps://www.phcogres.com/article/2017/9/5/104103prpr5117