4.3. Anti-Inflammatory Activity
The anti-inflammatory profile of intraperitoneally administered AEZZ and EEZZ, at the doses of 25–100 mg/kg, against prostaglandin-E2-(PGE2-) induced paw edema test has been reported earlier by Somchit and Nur Shukriyah [17]. The AEZZ exhibited significant anti-inflammatory activity only at the doses of 50 and 100 mg/kg with the former dose producing an activity between 1–4 h while the latter exhibiting an activity between 0.5–4 h after PGE2 administration. On the other hand, the EEZZ failed to affect the PGE2-induded paw edema at all doses tested. Mefenamic acid, at the dose of 20 mg/kg, was used as standard drug and produced peak effects of approximately 50% inflammatory inhibition for the first 2 h after its administration before being constantly reduced until it reached 30% inhibition at the end of the experiment (at interval time of 4 h). The AEZZ with percentage of inflammatory inhibition of approximately 50% was found to produce anti-inflammatory activity that was comparable to that of mefenamic acid for the first 2-hour-interval.
The MEZZ (25–100 mg/kg; given subcutaneously) also demonstrated significant (