4.4 Article

Steroidal saponins from Trillium govanianum as α-amylase, α-glucosidase, and dipeptidyl peptidase IV inhibitory agents

Journal

JOURNAL OF PHARMACY AND PHARMACOLOGY
Volume 73, Issue 4, Pages 487-495

Publisher

OXFORD UNIV PRESS
DOI: 10.1093/jpp/rgaa038

Keywords

Trillium govanianum; steroidal saponins; alpha-amylase; alpha-glucosidase; DPP-IV; molecular docking

Funding

  1. CSIR, New Delhi [HCP010]
  2. CSIR, New Delhi

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The study demonstrated that extracts, fractions, and isolated steroidal saponins from Trillium govanianum exhibit good inhibitory activity against alpha-amylase and alpha-glucosidase, with moderate activity against dipeptidyl peptidase IV. In silico and in vitro studies revealed an association between steroidal saponins from T. govanianum and their molecular interactions with these enzymes. These findings suggest that fractions and steroidal saponins from T. govanianum could be used as nutraceutical supplements for managing blood glucose levels effectively.
Objective To provide the scientific basis for the utility of rhizome of Trillium govanianum as nutraceutical supplements in managing physiological glycemic levels. Methods The in vitro enzyme inhibitory activity of the extract, fractions, and the isolated steroidal saponins from the rhizome part of T. govanianum was carried out against alpha -amylase, alpha -glucosidase, and dipeptidyl peptidase IV. The molecular interactions, binding score, and pharmacokinetic parameters (absorption, distribution metabolism, and excretion) of steroidal saponins were analyzed by the Schrodinger molecular docking software. Key findings Current study explained that the extract, fractions, and isolated steroidal saponins from T. govanianum possess good alpha -amylase and alpha -glucosidase inhibitory activity while moderate dipeptidyl peptidase IV inhibitory activity. Moreover, in vitro results revealed that borassoside E (IC50 7.15 1.78 mu M), protodioscin (IC50 6.72 +/- 0.04 mu M), and diosgenin (IC50 12.75 +/- 2.70 mu M) are most effective in inhibiting the activity of alpha -amylase, alpha -glucosidase, and dipeptidyl peptidase IV, respectively. Current in silico and in vitro studies established an association between the steroidal saponins from T. govanianum and their molecular interactions with alpha -amylase, alpha -glucosidase, and dipeptidyl peptidase IV. Conclusion The results of this investigation suggest that fractions and steroidal saponins from T. govanianum exhibit good antidiabetic activity which could be used as nutraceutical supplements for the management of systemic glucose level.

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