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  • Title: Evaluation of the anti-inflammatory properties of Sclerocarya birrea (A. Rich.) Hochst. (family: Anacardiaceae) stem-bark extracts in rats.
    Author: Ojewole JA.
    Journal: J Ethnopharmacol; 2003 Apr; 85(2-3):217-20. PubMed ID: 12639743.
    Abstract:
    This study was designed to evaluate the anti-inflammatory effect of Sclerocarya birrea (family: Anacardiaceae) stem-bark aqueous and methanolic extracts in rats. Young adult, male Wistar rats (Rattus norvegicus) weighing 250-300g were used. The anti-inflammatory effects of aqueous and methanolic stem-bark extracts of the plant (SB, 500mg/kg p.o.) were examined on rat paw oedema induced by subplantar injections of fresh egg albumin (0.5ml/kg). Acetylsalicylic acid (ASA, 100mg/kg p.o.) was used as the reference anti-inflammatory agent for comparison. Both the aqueous and methanolic stem-bark extracts of S. birrea (SB, 500mg/kg p.o.) progressively and time-dependently reduced rat paw oedema induced by subplantar injections of fresh egg albumin. However, the methanolic extract of the plant produced relatively greater and more pronounced anti-inflammatory effect than its aqueous extract counterpart in the experimental animal model used. The two extracts of S. birrea stem-bark were found to be markedly less potent than ASA as anti-inflammatory agent. Although both the aqueous and methanolic extracts of S. birrea stem-bark are less potent than ASA as anti-inflammatory agent, the results of this experimental animal study indicate that the extracts possess anti-inflammatory activity, and thus lend credence to the suggested folkloric use of the plant in the management and/or control of arthritis and other inflammatory conditions in certain communities of South Africa.
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