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  • Title: Effects of stress on gamma glutamyl transpeptidase (GGT) activity in lymphoid system of rats: modulation by drugs.
    Author: Koner BC, Banerjee BD, Ray A.
    Journal: Indian J Exp Biol; 1997 Mar; 35(3):222-4. PubMed ID: 9332165.
    Abstract:
    Effects of stress and its modulation by adaptogens were evaluated on gamma glutamyl transpeptidase (GGT) activity in different tissues of the lymphoid system in rats. Restrain stress (RSx5) suppressed the GGT activity in different tissues of lymphoid system viz. the lymphocyte, the spleen, the thymus and the macrophage, and the maximum effect was seen in the spleen. Chlordiazepoxide, a prototype anti-stress agent, which did not alter GGT activity per se, reversed the effect of RS on this enzyme activity in tissues of lymphoid system studied. Azardirachta indica (Al, Neem), an indigenous adaptogen stimulated the GGT activity per se and nearly normalised RS induced suppression of GGT in lymphoid system. The observed suppression of GGT activity in lymphoid system by stress and its modulation by natural and synthetic adaptogens indicates that GGT could be a consistent cellular/biochemical marker of stress responsiveness and stress-induced immunomodulation.
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