Abstract
The present study deals with the anti-hyperalgesic and anti-inflammtory effects of flavonoids (1–4) isolated from the chloroform fraction of Pistacia integerrima galls. The structure of isolated compounds was elucidated by using advance spectroscopy analysis and comparing their physical spectral data with reported one. The pretreatment of compounds (1–4) caused significant anti-hyperalgesic effects in acetic acid induced writhing test in a dose dependent manner. The compounds strongly complimented the effects in both phases of formalin test. However, the administration of naloxone did not abolish the induced antinociceptive effects and therefore suggested the absence of opioid receptor involvement. The pretreatment of flavonoids (1–4) elicited marked anti-inflammtory effects in carrageenan induced paw edema test in mice during various assessment times (1–5h). The effects were dose dependent and maximum results were observed after 3rd h of treatments which remained significant up to 5th hour. It is concluded that the isolated flavonoids (1–4) possessed strong anti-hyperalgesic and anti-inflammtory activity and thus are strong candidates for further detail studies.
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