Antipyretic and Antinociceptive Effect of the Methanol Leaf Extract of Ficus asperifolia in Murine Models
DOI:
https://doi.org/10.54117/jcbr.v4i1.2Keywords:
Antipyretics, Aspirin, Pain, Brewer’s yeast, Ficus asperifolia, TemperatureAbstract
Pyrexia occurs as a result of the resetting of the hypothalamic set-point. Non steroidal anti-inflammatory drugs used for the treatment of fever and related illnesses are associated with side effects including gastrointestinal irritation, bleeding, ulcers and perforation. In traditional medicine, many plants have been found to possess antipyretic activity. Ficus asperifolia (Miq), family Moraceae has been traditionally used to treat pain and fevers. The aim of the study was thus to evaluate the antipyretic and antinociceptive activity of the methanol leaf extract of Ficus asperifolia (FME) in murine models. Preliminary phytochemical screening and oral acute toxicity studies were conducted using standard protocols. Antipyretic activity was evaluated using the Brewer’s yeast induced pyrexia model. Antinociceptive effects were investigated using the acetic acid and thermal induced models. The mechanism of action of the plant was also evaluated against several antagonists. FME significantly (p<0.05) and dose dependently reduced yeast induced pyrexia. FME at doses 125, 250 and 500 mg/kg significantly (p<0.05) decreased acetic acid induced abdominal writhes and increased the mean reaction time of mice to thermal-induced pain stimulus. Pre-treatment of mice with naloxone (a non-selective opioid receptor antagonist), glibenclamide (a potassium channel blocker) and L-NNA (a nitric oxide synthase inhibitor) significantly reversed the analgesic action of the extract suggesting that the activity is likely mediated via the involvement of these pathways.
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