, Volume 21, Issue 1, pp 21–30

Analgesic and anti-inflammatory effect of aqueous extract of the stem bark of Allanblackia gabonensis (Guttiferae)

  • Edwige V. Ymele
  • A. Bertrand Dongmo
  • Théophile Dimo
Research Article


Allanblackiagabonensis (Guttiferae) is a plant used in the African traditional medicine as remedies against pain, rheumatism, inflammations. In the present work, the analgesic effect of aqueous extract has been evaluated using acetic acid, formalin, hot-plate test, tail immersion and paw-pressure test. The anti-inflammatory effect of this extract was also investigated on carrageenan, histamine or serotonin induced by paw oedema. Aqueous extract of stem bark of A. gabonensis administrated p.o. showed significant activity against paw oedema induced by carrageenan, with a maximum percentage of inhibition reaching the 74.01% at the preventive test at a dose of 200 mg/kg. A. gabonensis exhibited a significant reduction of paw oedema induced by both histamine and serotonin with a maximal inhibition of 56.94% (200 mg/kg) and 40.83% (100 mg/kg), respectively. It showed significant protective effects against chemical stimuli (acetic acid and formalin) in the mouse. Administered orally at the doses of 100–400 mg/kg, exhibited protective effect of at least 69.78% on the pain induced by acetic acid and also reduced first (67.18% at 200 mg/kg) and second (83.87% at 400 mg/kg) phase of pain-induced par formalin. It also produced a significant increase of the threshold of sensitivity to pressure and hot plate-induced pain in the rats. These results suggest a peripheral and central analgesic activities as well as an anti-inflammatory effect of the stem bark of A.gabonensis.


Allanblackia gabonensis Antiinflammatory Analgesic 


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Copyright information

© Springer Basel AG 2011

Authors and Affiliations

  • Edwige V. Ymele
    • 1
  • A. Bertrand Dongmo
    • 2
  • Théophile Dimo
    • 1
  1. 1.Department of Animal Biology, Laboratory of Animal physiology, Faculty of ScienceUniversity of Yaoundé IYaoundéCameroon
  2. 2.Department of Animal Biology and Physiology, Laboratory of Animal Physiology, Faculty of ScienceUniversity of DoualaDoualaCameroon

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