title: Immunomodulators from Paris formosana Hayata.
abstract: Eight glycosides PF-1 to PF-8 were isolated from the leaves and stems of Paris formosana Hayata (Liliaceae), of which PF-3 (III) was the main compound. It was found that PF-1 to PF-3 (I-III) caused proliferative responses of mouse lymphocytes to concanavalin A and augmentation of mouse granulocyte/macrophage colony forming cells in mouse fibroblast cell L929 conditioned medium. PF-4(IV) and PF-8 showed significant immunomodulatory effects with very low toxicity: they not only caused the same immune responses as PF-1, 2 & 3 but also enhanced the proliferative response of human peripheral whole blood to phytohemagglutinin. PF-5 (V) also increased 3H-thymidine incorporation in ConA-stimulated lymphocytes and in PHA-stimulated human peripheral whole blood, and enhanced the proliferative response of granulocyte/macrophage colony stimulating activity. PF-6(VI) and PF-7(VII) augmented 3H-thymidine incorporation in granulocyte/macrophage colony-forming cells and mitogenic response of PHA-stimulated human peripheral whole blood cells from healthy adults. However, PF-1, 2 and 3 showed hemolytic action, while PF-4 to PF-8 had no hemolytic action at all. On the other hand, the hemolytic action of PF-3 derivatives was reduced as compared with PF-3 but their immune responses did not equal those of PF-3, only showing granulocyte/macrophage colony stimulating activity.
authors.affiliation: School of Pharmacy, College of Medicine, National Taiwan University, Taipei, ROC.
authors.forename: H C
authors.initials: HC
authors.lastname: Chiang
authors.forename: J J
authors.initials: JJ
authors.lastname: Wang
authors.forename: R T
authors.initials: RT
authors.lastname: Wu
mesh_terms: D000276:Adjuvants, Immunologic / Q000302:isolation & purification* / Q000494:pharmacology; D000818:Animals; D001854:Bone Marrow Cells; D002240:Carbohydrate Sequence; D002478:Cells, Cultured; D003208:Concanavalin A; D004261:DNA Replication / Q000187:drug effects*; D006027:Glycosides / Q000302:isolation & purification* / Q000494:pharmacology; D006098:Granulocytes / Q000166:cytology; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects; D006801:Humans; D007739:L Cells; D008213:Lymphocyte Activation / Q000187:drug effects*; D008214:Lymphocytes / Q000187:drug effects / Q000276:immunology*; D008264:Macrophages / Q000166:cytology; D008297:Male; D008516:Medicine, Chinese Traditional; D051379:Mice; D008807:Mice, Inbred BALB C; D008969:Molecular Sequence Data; D015394:Molecular Structure; D013154:Spleen / Q000276:immunology; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D000276:Adjuvants, Immunologic; D006027:Glycosides; D014316:Tritium; D003208:Concanavalin A; D013936:Thymidine