Anti-pathogenic potential of a classical ayurvedic formulation- Triphala
2019
A classical ayurvedic polyherbal formulation namely Triphala was assessed for its anti-pathogenic potential against five different pathogenic bacteria. Virulence of four of them towards the model host Caenorhabditis elegans was attenuated (by 18-45%) owing to pre-treatment with Triphala (≤20 µg/ml). Triphala could also exert significant therapeutic effect on worms already infected with Chromobacterium violaceum , Serratia marcescens or Staphylococcus aureus . Prophylactic use of Triphala allowed worms to score 14-41% better survival in face of subsequent pathogen challenge. Repeated exposure to this formulation induced resistance in S. marcescens , but not in P. aeruginosa . It also exerted a post-extract effect (PEE) on three of the test pathogens. Triphala was able to modulate production of quorum sensing (QS)-regulated pigments in three of the multidrug-resistant gram-negative test bacteria. Haemolytic activity of S. aureus was heavily inhibited under the influence of this formulation. P. aeruginosa's lysozyme-susceptibility was found to increase by ~25-43% upon Triphala -pretreatment. These results validate therapeutic potential of one of the most widely used polyherbal ayurvedic formulations called Triphala .
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