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Immunomodulators from Paris formosana Hayata.

H C Chiang1, J J Wang, R T Wu

  • 1School of Pharmacy, College of Medicine, National Taiwan University, Taipei, ROC.

Anticancer Research
|May 1, 1992
PubMed
Summary

Eight glycosides from Paris formosana Hayata were studied for their immunomodulatory effects. Compounds PF-4 to PF-8 demonstrated significant immune enhancement with low toxicity, unlike PF-1 to PF-3 which showed hemolytic action.

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Area of Science:

  • Phytochemistry
  • Immunology
  • Pharmacology

Background:

  • Paris formosana Hayata (Liliaceae) is a plant source of bioactive compounds.
  • Glycosides are a class of compounds with diverse biological activities.

Purpose of the Study:

  • To isolate and characterize glycosides from Paris formosana Hayata.
  • To evaluate the immunomodulatory effects and toxicity of isolated glycosides.

Main Methods:

  • Isolation and purification of eight glycosides (PF-1 to PF-8) from plant extracts.
  • In vitro assays to assess lymphocyte proliferation (concanavalin A, phytohemagglutinin) and colony-forming cell activity.
  • Evaluation of hemolytic action and toxicity.

Main Results:

  • PF-1 to PF-3 stimulated mouse lymphocyte proliferation and granulocyte/macrophage colony formation but exhibited hemolytic action.
  • PF-4 and PF-8 showed significant immunomodulatory effects with low toxicity, enhancing both mouse and human immune cell responses.
  • PF-5 to PF-7 also demonstrated immunomodulatory activities, including enhanced colony formation and mitogenic responses, with no hemolytic action.
  • PF-3 derivatives had reduced hemolytic action but weaker immune responses compared to PF-3.

Conclusions:

  • Paris formosana glycosides possess notable immunomodulatory properties.
  • Compounds PF-4 to PF-8 represent promising candidates for further investigation due to their efficacy and low toxicity.
  • The study highlights the potential of P. formosana as a source of novel immunomodulatory agents.

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