Mediterranean Journal Of Pharmacy And Pharmaceutical Sciences

Characterizations of the active ingredients of methanol extract of weaver ant and its analgesic activity in mice

• Authors Details :  
• Deborah O. Momo

103 Views Original Article

Pain according to WHO has been one of the greatest issues to plague man, in the bid to handle this issue of pain, man has sought to look for other means to reduce pain to its bare minimum. This study is aimed at investigating the analgesic activity of the methanolic extract of the African weaver ant using acetic acid-induced writhing, hot plate method, and formalin-induced pain models in Swiss mice. In the acetic acid test, the methanolic extract of Oecophylla longinoda (OL) was administered orally at 200 and 400 mg/kg body weight while aspirin was administered at 100 mg/kg and tween 80 served as standards. In the hot plate and formalin models, the extract was administered orally at two doses of 200 and 400 mg/kg while pentazocine at 10 mg/kg and tween 80 at 10 mg/kg served as standards. The methanolic extract of OL exhibited significant analgesic activity in all the models, with none less than the standard significant difference (p < 0.05) by increasing the reaction time of the mice after treatment in comparison to the control. The 400 mg/kg extract in the acetic acid-induced writhing response has a percentage inhibition of 52.7%, which shows how well the extract inhibits pain in mice. The methanolic extract significantly reduced pain response in mice, with a p-value of 0.03, 0.02, and 0.001 in all the test models, respectively. OL increased the pain threshold over time and significantly reduced the writhing response that mice experience from acetic acid. Furthermore, pretreatment with OL significantly and dose-dependently decreased the early and late phases of formalin-induced pain in mice. Thus, these findings suggest that the methanolic extract of OL acts on central and peripheral pain pathways.

Article Subject Details

• Pharmaceutical sciences
• Pharmacognosy
• Pharmacology
• Pharmacy

Article Keywords Details

• Nigeria
• nociceptive
• Oecophylla longinoda
• pain
• weaver ant
• Analgesic

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