Modulation of serum phosphatases activity in Swiss albino mice against gamma irradiation by Mentha piperita Linn.

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Abstract
The modulatory influence of mentha oil (Mentha piperita Linn.) against a lethal dose (8.0 Gy) of gamma irradiation on the activities of serum phosphatases in Swiss albino mice was studied at various post‐irradiation intervals between 6 h and 30 days. Mentha oil (40 μL/animal/day) given orally for 3 consecutive days prior to whole‐body irradiation (8.0 Gy) showed a modulation of activity of serum phosphatases. The values of acid phosphatase activities were significantly higher in the irradiated groups throughout the experiment compared with the mentha treated unirradiated animals. However, the acid phosphatase activity of mentha treated irradiated animals showed a significant decline over untreated irradiated animals at all autopsy intervals, which attained the normal value on day 5. On the contrary, a marked decrease in serum alkaline phosphatase activity was noted in both irradiated groups but in the mentha treated irradiated group the values of alkaline phosphatase activity were found to be significantly higher than the respective control during the period of study being normal at day 5 post‐irradiation and onwards. Copyright © 2002 John Wiley & Sons, Ltd.