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Analgesic, anti-inflammatory and anti-platelet activities of the methanolic extract of Acacia modesta leaves

Abstract

The current study was aimed to evaluate Acacia modesta for analgesic, anti-inflammatory, and anti-platelet activities. The analgesic and anti-inflammatory effects were assessed in rodents using acetic acid and formalin-induced nociception, hot plate and carrageenan-induced rat paw oedema tests. The intraperitoneal (i.p.) administration of the methanolic extract (50 and 100 mg/kg) produced significant inhibition (P < 0.01) of the acetic acid-induced writhing in mice and suppressed formalin-induced licking response of animals in both phases of the test. In the hot plate assay the plant extract (100 mg/kg) increased pain threshold of mice. Naloxone (5 mg/kg i.p.) partially reversed the analgesic effect of the extract in formalin and hot plate tests. A. modesta (100 and 200 mg/kg i.p.) exhibited sedative effect in barbiturate-induced hypnosis test similar to that produced by diazepam (10 mg/kg i.p.). The plant extract (50–200 mg/kg i.p.) produced marked anti-inflammatory effect in carrageenan-induced rat paw oedema assay comparable to diclofenac and produced a dose-dependent (0.5–2.5 mg/mL) inhibitory effect against arachidonic acid induced platelet aggregation. These data suggest that A. modesta possesses peripheral analgesic and anti-inflammatory properties, with analgesic effects partially associated with the opioid system.

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Correspondence to Ishfaq A. Bukhari.

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Bukhari, I.A., Khan, R.A., Gilani, A.H. et al. Analgesic, anti-inflammatory and anti-platelet activities of the methanolic extract of Acacia modesta leaves. Inflammopharmacol 18, 187–196 (2010). https://doi.org/10.1007/s10787-010-0038-4

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  • DOI: https://doi.org/10.1007/s10787-010-0038-4

Keywords

  • Acacia modesta
  • Analgesic
  • Anti-inflammatory
  • Anti-platelet
  • Writhing test
  • Formalin test
  • Carrageenan-induced paw oedema