Abstract
Background: Andrographis paniculata (Burm. f.) Nees is a well-recognized medicinal plant known for its benefits against a multitude of ailments. The intent of the present study was to evaluate the effect of a standardized extract of A. paniculata on innate immunity. Materials and Methods: Phagocytic activity was measured in terms of phagocytic index using carbon clearance methodology in mice. In another experiment, NK cells (effector cells) were isolated from the mouse spleen after the dosing period, and NK cells-mediated lysis of target cells (YAC-1 cells) were determined using an MTT assay. Results: The phagocytic index and NK cell activity were found to be significantly ( p < 0.05) different in the treated group compared to the control group in the tested animal models at a dose of 41 mg/kg. Conclusion: The results suggest the potential of A. paniculata to enhance innate immunity.
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